/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_loopvsstraightlinecode_50-while_file-13.i


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


This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m
[2023-12-24 03:41:45,084 INFO  L188        SettingsManager]: Resetting all preferences to default values...
[2023-12-24 03:41:45,174 INFO  L114        SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf
[2023-12-24 03:41:45,180 WARN  L101        SettingsManager]: Preference file contains the following unknown settings:
[2023-12-24 03:41:45,181 WARN  L103        SettingsManager]:   * de.uni_freiburg.informatik.ultimate.core.Log level for class
[2023-12-24 03:41:45,207 INFO  L130        SettingsManager]: Preferences different from defaults after loading the file:
[2023-12-24 03:41:45,208 INFO  L151        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2023-12-24 03:41:45,208 INFO  L153        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2023-12-24 03:41:45,209 INFO  L151        SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults:
[2023-12-24 03:41:45,212 INFO  L153        SettingsManager]:  * Use memory slicer=true
[2023-12-24 03:41:45,212 INFO  L151        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2023-12-24 03:41:45,213 INFO  L153        SettingsManager]:  * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2023-12-24 03:41:45,213 INFO  L151        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2023-12-24 03:41:45,214 INFO  L153        SettingsManager]:  * Create parallel compositions if possible=false
[2023-12-24 03:41:45,215 INFO  L153        SettingsManager]:  * Use SBE=true
[2023-12-24 03:41:45,215 INFO  L151        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2023-12-24 03:41:45,215 INFO  L153        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2023-12-24 03:41:45,215 INFO  L153        SettingsManager]:  * sizeof long=4
[2023-12-24 03:41:45,216 INFO  L153        SettingsManager]:  * sizeof POINTER=4
[2023-12-24 03:41:45,217 INFO  L153        SettingsManager]:  * Check division by zero=IGNORE
[2023-12-24 03:41:45,217 INFO  L153        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2023-12-24 03:41:45,217 INFO  L153        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2023-12-24 03:41:45,218 INFO  L153        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2023-12-24 03:41:45,218 INFO  L153        SettingsManager]:  * Adapt memory model on pointer casts if necessary=true
[2023-12-24 03:41:45,218 INFO  L153        SettingsManager]:  * Use bitvectors instead of ints=true
[2023-12-24 03:41:45,218 INFO  L153        SettingsManager]:  * Allow undefined functions=false
[2023-12-24 03:41:45,218 INFO  L153        SettingsManager]:  * Memory model=HoenickeLindenmann_4ByteResolution
[2023-12-24 03:41:45,218 INFO  L153        SettingsManager]:  * sizeof long double=12
[2023-12-24 03:41:45,219 INFO  L153        SettingsManager]:  * Check if freed pointer was valid=false
[2023-12-24 03:41:45,219 INFO  L153        SettingsManager]:  * Use constant arrays=true
[2023-12-24 03:41:45,220 INFO  L151        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2023-12-24 03:41:45,220 INFO  L153        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2023-12-24 03:41:45,220 INFO  L153        SettingsManager]:  * Only consider context switches at boundaries of atomic blocks=true
[2023-12-24 03:41:45,220 INFO  L153        SettingsManager]:  * SMT solver=External_DefaultMode
[2023-12-24 03:41:45,220 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2023-12-24 03:41:45,220 INFO  L151        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2023-12-24 03:41:45,221 INFO  L153        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2023-12-24 03:41:45,221 INFO  L153        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopHeads
[2023-12-24 03:41:45,221 INFO  L153        SettingsManager]:  * Trace refinement strategy=WOLF
[2023-12-24 03:41:45,221 INFO  L153        SettingsManager]:  * Command for external solver=cvc4 --incremental --print-success --lang smt
[2023-12-24 03:41:45,221 INFO  L153        SettingsManager]:  * Apply one-shot large block encoding in concurrent analysis=false
[2023-12-24 03:41:45,221 INFO  L153        SettingsManager]:  * Automaton type used in concurrency analysis=PETRI_NET
[2023-12-24 03:41:45,222 INFO  L153        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2023-12-24 03:41:45,222 INFO  L153        SettingsManager]:  * Order on configurations for Petri net unfoldings=DBO
[2023-12-24 03:41:45,222 INFO  L153        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2023-12-24 03:41:45,222 INFO  L153        SettingsManager]:  * Logic for external solver=AUFBV
[2023-12-24 03:41:45,222 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$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
[2023-12-24 03:41:45,448 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2023-12-24 03:41:45,469 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2023-12-24 03:41:45,471 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2023-12-24 03:41:45,472 INFO  L270        PluginConnector]: Initializing CDTParser...
[2023-12-24 03:41:45,472 INFO  L274        PluginConnector]: CDTParser initialized
[2023-12-24 03:41:45,473 INFO  L431   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_loopvsstraightlinecode_50-while_file-13.i
[2023-12-24 03:41:46,663 INFO  L533              CDTParser]: Created temporary CDT project at NULL
[2023-12-24 03:41:46,856 INFO  L384              CDTParser]: Found 1 translation units.
[2023-12-24 03:41:46,857 INFO  L180              CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_loopvsstraightlinecode_50-while_file-13.i
[2023-12-24 03:41:46,865 INFO  L427              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c5f56db89/045132ec43bb429bbbb79827b283d1b7/FLAG970e7b97f
[2023-12-24 03:41:46,880 INFO  L435              CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c5f56db89/045132ec43bb429bbbb79827b283d1b7
[2023-12-24 03:41:46,882 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2023-12-24 03:41:46,884 INFO  L133        ToolchainWalker]: Walking toolchain with 5 elements.
[2023-12-24 03:41:46,886 INFO  L112        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2023-12-24 03:41:46,886 INFO  L270        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2023-12-24 03:41:46,890 INFO  L274        PluginConnector]: CACSL2BoogieTranslator initialized
[2023-12-24 03:41:46,890 INFO  L184        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.12 03:41:46" (1/1) ...
[2023-12-24 03:41:46,891 INFO  L204        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@44f360e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 03:41:46, skipping insertion in model container
[2023-12-24 03:41:46,891 INFO  L184        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.12 03:41:46" (1/1) ...
[2023-12-24 03:41:46,927 INFO  L177         MainTranslator]: Built tables and reachable declarations
[2023-12-24 03:41:47,061 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_loopvsstraightlinecode_50-while_file-13.i[915,928]
[2023-12-24 03:41:47,100 INFO  L209          PostProcessor]: Analyzing one entry point: main
[2023-12-24 03:41:47,113 INFO  L202         MainTranslator]: Completed pre-run
[2023-12-24 03:41:47,127 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_loopvsstraightlinecode_50-while_file-13.i[915,928]
[2023-12-24 03:41:47,161 INFO  L209          PostProcessor]: Analyzing one entry point: main
[2023-12-24 03:41:47,178 INFO  L206         MainTranslator]: Completed translation
[2023-12-24 03:41:47,178 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 03:41:47 WrapperNode
[2023-12-24 03:41:47,179 INFO  L131        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2023-12-24 03:41:47,179 INFO  L112        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2023-12-24 03:41:47,180 INFO  L270        PluginConnector]: Initializing Boogie Procedure Inliner...
[2023-12-24 03:41:47,180 INFO  L274        PluginConnector]: Boogie Procedure Inliner initialized
[2023-12-24 03:41:47,185 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 03:41:47" (1/1) ...
[2023-12-24 03:41:47,198 INFO  L184        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 03:41:47" (1/1) ...
[2023-12-24 03:41:47,225 INFO  L138                Inliner]: procedures = 27, calls = 33, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 140
[2023-12-24 03:41:47,225 INFO  L131        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2023-12-24 03:41:47,226 INFO  L112        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2023-12-24 03:41:47,226 INFO  L270        PluginConnector]: Initializing Boogie Preprocessor...
[2023-12-24 03:41:47,226 INFO  L274        PluginConnector]: Boogie Preprocessor initialized
[2023-12-24 03:41:47,242 INFO  L184        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 03:41:47" (1/1) ...
[2023-12-24 03:41:47,242 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 03:41:47" (1/1) ...
[2023-12-24 03:41:47,246 INFO  L184        PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 03:41:47" (1/1) ...
[2023-12-24 03:41:47,255 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].
[2023-12-24 03:41:47,256 INFO  L184        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 03:41:47" (1/1) ...
[2023-12-24 03:41:47,256 INFO  L184        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 03:41:47" (1/1) ...
[2023-12-24 03:41:47,265 INFO  L184        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 03:41:47" (1/1) ...
[2023-12-24 03:41:47,267 INFO  L184        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 03:41:47" (1/1) ...
[2023-12-24 03:41:47,269 INFO  L184        PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 03:41:47" (1/1) ...
[2023-12-24 03:41:47,270 INFO  L184        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 03:41:47" (1/1) ...
[2023-12-24 03:41:47,273 INFO  L131        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2023-12-24 03:41:47,274 INFO  L112        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2023-12-24 03:41:47,274 INFO  L270        PluginConnector]: Initializing RCFGBuilder...
[2023-12-24 03:41:47,274 INFO  L274        PluginConnector]: RCFGBuilder initialized
[2023-12-24 03:41:47,275 INFO  L184        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 03:41:47" (1/1) ...
[2023-12-24 03:41:47,296 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2023-12-24 03:41:47,307 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-24 03:41:47,326 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)
[2023-12-24 03:41:47,329 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
[2023-12-24 03:41:47,350 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2023-12-24 03:41:47,351 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0
[2023-12-24 03:41:47,351 INFO  L130     BoogieDeclarations]: Found specification of procedure assume_abort_if_not
[2023-12-24 03:41:47,351 INFO  L138     BoogieDeclarations]: Found implementation of procedure assume_abort_if_not
[2023-12-24 03:41:47,351 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2023-12-24 03:41:47,351 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2023-12-24 03:41:47,418 INFO  L241             CfgBuilder]: Building ICFG
[2023-12-24 03:41:47,419 INFO  L267             CfgBuilder]: Building CFG for each procedure with an implementation
[2023-12-24 03:41:52,776 INFO  L282             CfgBuilder]: Performing block encoding
[2023-12-24 03:41:52,812 INFO  L304             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2023-12-24 03:41:52,812 INFO  L309             CfgBuilder]: Removed 1 assume(true) statements.
[2023-12-24 03:41:52,812 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.12 03:41:52 BoogieIcfgContainer
[2023-12-24 03:41:52,812 INFO  L131        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2023-12-24 03:41:52,814 INFO  L112        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2023-12-24 03:41:52,814 INFO  L270        PluginConnector]: Initializing TraceAbstraction...
[2023-12-24 03:41:52,817 INFO  L274        PluginConnector]: TraceAbstraction initialized
[2023-12-24 03:41:52,817 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.12 03:41:46" (1/3) ...
[2023-12-24 03:41:52,817 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@631129be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.12 03:41:52, skipping insertion in model container
[2023-12-24 03:41:52,818 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 03:41:47" (2/3) ...
[2023-12-24 03:41:52,818 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@631129be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.12 03:41:52, skipping insertion in model container
[2023-12-24 03:41:52,818 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.12 03:41:52" (3/3) ...
[2023-12-24 03:41:52,819 INFO  L112   eAbstractionObserver]: Analyzing ICFG hardness_loopvsstraightlinecode_50-while_file-13.i
[2023-12-24 03:41:52,837 INFO  L204   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2023-12-24 03:41:52,838 INFO  L163   ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2023-12-24 03:41:52,884 INFO  L356      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2023-12-24 03:41:52,892 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;@38b906d1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2023-12-24 03:41:52,892 INFO  L358      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2023-12-24 03:41:52,897 INFO  L276                IsEmpty]: Start isEmpty. Operand  has 58 states, 35 states have (on average 1.4285714285714286) internal successors, (50), 36 states have internal predecessors, (50), 20 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20)
[2023-12-24 03:41:52,909 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 128
[2023-12-24 03:41:52,909 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-24 03:41:52,910 INFO  L195           NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-12-24 03:41:52,910 INFO  L420      AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-24 03:41:52,914 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-24 03:41:52,914 INFO  L85        PathProgramCache]: Analyzing trace with hash 1314693591, now seen corresponding path program 1 times
[2023-12-24 03:41:52,924 INFO  L118   FreeRefinementEngine]: Executing refinement strategy WOLF
[2023-12-24 03:41:52,924 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1758430746]
[2023-12-24 03:41:52,925 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-24 03:41:52,925 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
[2023-12-24 03:41:52,925 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat
[2023-12-24 03:41:52,927 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)
[2023-12-24 03:41:52,928 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
[2023-12-24 03:41:53,236 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-24 03:41:53,249 INFO  L262         TraceCheckSpWp]: Trace formula consists of 213 conjuncts, 1 conjunts are in the unsatisfiable core
[2023-12-24 03:41:53,258 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-24 03:41:53,295 INFO  L134       CoverageAnalysis]: Checked inductivity of 760 backedges. 278 proven. 0 refuted. 0 times theorem prover too weak. 482 trivial. 0 not checked.
[2023-12-24 03:41:53,295 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-24 03:41:53,296 INFO  L136   FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2023-12-24 03:41:53,296 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1758430746]
[2023-12-24 03:41:53,297 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleMathsat [1758430746] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-24 03:41:53,297 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-24 03:41:53,297 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2023-12-24 03:41:53,298 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [567521795]
[2023-12-24 03:41:53,299 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-24 03:41:53,302 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 2 states
[2023-12-24 03:41:53,302 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2023-12-24 03:41:53,324 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants.
[2023-12-24 03:41:53,325 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2023-12-24 03:41:53,327 INFO  L87              Difference]: Start difference. First operand  has 58 states, 35 states have (on average 1.4285714285714286) internal successors, (50), 36 states have internal predecessors, (50), 20 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) Second operand  has 2 states, 2 states have (on average 17.0) internal successors, (34), 2 states have internal predecessors, (34), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20)
[2023-12-24 03:41:54,243 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-24 03:41:54,243 INFO  L93              Difference]: Finished difference Result 113 states and 198 transitions.
[2023-12-24 03:41:54,279 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. 
[2023-12-24 03:41:54,280 INFO  L78                 Accepts]: Start accepts. Automaton has  has 2 states, 2 states have (on average 17.0) internal successors, (34), 2 states have internal predecessors, (34), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 127
[2023-12-24 03:41:54,280 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-24 03:41:54,286 INFO  L225             Difference]: With dead ends: 113
[2023-12-24 03:41:54,286 INFO  L226             Difference]: Without dead ends: 56
[2023-12-24 03:41:54,289 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2023-12-24 03:41:54,294 INFO  L413           NwaCegarLoop]: 81 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 81 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time
[2023-12-24 03:41:54,295 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 81 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time]
[2023-12-24 03:41:54,307 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 56 states.
[2023-12-24 03:41:54,335 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56.
[2023-12-24 03:41:54,336 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 56 states, 34 states have (on average 1.2941176470588236) internal successors, (44), 34 states have internal predecessors, (44), 20 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20)
[2023-12-24 03:41:54,341 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 84 transitions.
[2023-12-24 03:41:54,343 INFO  L78                 Accepts]: Start accepts. Automaton has 56 states and 84 transitions. Word has length 127
[2023-12-24 03:41:54,343 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-24 03:41:54,343 INFO  L495      AbstractCegarLoop]: Abstraction has 56 states and 84 transitions.
[2023-12-24 03:41:54,343 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 2 states, 2 states have (on average 17.0) internal successors, (34), 2 states have internal predecessors, (34), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20)
[2023-12-24 03:41:54,343 INFO  L276                IsEmpty]: Start isEmpty. Operand 56 states and 84 transitions.
[2023-12-24 03:41:54,347 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 128
[2023-12-24 03:41:54,347 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-24 03:41:54,348 INFO  L195           NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-12-24 03:41:54,359 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
[2023-12-24 03:41:54,552 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
[2023-12-24 03:41:54,552 INFO  L420      AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-24 03:41:54,553 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-24 03:41:54,553 INFO  L85        PathProgramCache]: Analyzing trace with hash -278152993, now seen corresponding path program 1 times
[2023-12-24 03:41:54,554 INFO  L118   FreeRefinementEngine]: Executing refinement strategy WOLF
[2023-12-24 03:41:54,554 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [263419662]
[2023-12-24 03:41:54,554 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-24 03:41:54,555 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
[2023-12-24 03:41:54,555 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat
[2023-12-24 03:41:54,557 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)
[2023-12-24 03:41:54,557 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
[2023-12-24 03:41:54,835 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-24 03:41:54,847 INFO  L262         TraceCheckSpWp]: Trace formula consists of 213 conjuncts, 6 conjunts are in the unsatisfiable core
[2023-12-24 03:41:54,854 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-24 03:41:56,073 INFO  L134       CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked.
[2023-12-24 03:41:56,074 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-24 03:41:56,074 INFO  L136   FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2023-12-24 03:41:56,077 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [263419662]
[2023-12-24 03:41:56,078 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleMathsat [263419662] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-24 03:41:56,078 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-24 03:41:56,078 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-12-24 03:41:56,079 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1701074092]
[2023-12-24 03:41:56,079 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-24 03:41:56,082 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-12-24 03:41:56,082 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2023-12-24 03:41:56,083 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-12-24 03:41:56,083 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2023-12-24 03:41:56,083 INFO  L87              Difference]: Start difference. First operand 56 states and 84 transitions. Second operand  has 5 states, 5 states have (on average 6.0) internal successors, (30), 4 states have internal predecessors, (30), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20)
[2023-12-24 03:41:58,157 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.62s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers []
[2023-12-24 03:41:59,969 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.64s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers []
[2023-12-24 03:41:59,970 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-24 03:41:59,970 INFO  L93              Difference]: Finished difference Result 167 states and 251 transitions.
[2023-12-24 03:42:00,004 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2023-12-24 03:42:00,004 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 6.0) internal successors, (30), 4 states have internal predecessors, (30), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 127
[2023-12-24 03:42:00,005 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-24 03:42:00,007 INFO  L225             Difference]: With dead ends: 167
[2023-12-24 03:42:00,007 INFO  L226             Difference]: Without dead ends: 112
[2023-12-24 03:42:00,008 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56
[2023-12-24 03:42:00,009 INFO  L413           NwaCegarLoop]: 78 mSDtfsCounter, 72 mSDsluCounter, 191 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 269 SdHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time
[2023-12-24 03:42:00,009 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 269 Invalid, 106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time]
[2023-12-24 03:42:00,010 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 112 states.
[2023-12-24 03:42:00,039 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 94.
[2023-12-24 03:42:00,039 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 94 states, 51 states have (on average 1.196078431372549) internal successors, (61), 51 states have internal predecessors, (61), 40 states have call successors, (40), 2 states have call predecessors, (40), 2 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40)
[2023-12-24 03:42:00,048 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 141 transitions.
[2023-12-24 03:42:00,049 INFO  L78                 Accepts]: Start accepts. Automaton has 94 states and 141 transitions. Word has length 127
[2023-12-24 03:42:00,051 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-24 03:42:00,052 INFO  L495      AbstractCegarLoop]: Abstraction has 94 states and 141 transitions.
[2023-12-24 03:42:00,052 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 6.0) internal successors, (30), 4 states have internal predecessors, (30), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20)
[2023-12-24 03:42:00,052 INFO  L276                IsEmpty]: Start isEmpty. Operand 94 states and 141 transitions.
[2023-12-24 03:42:00,058 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 129
[2023-12-24 03:42:00,058 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-24 03:42:00,059 INFO  L195           NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-12-24 03:42:00,073 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
[2023-12-24 03:42:00,270 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
[2023-12-24 03:42:00,270 INFO  L420      AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-24 03:42:00,271 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-24 03:42:00,271 INFO  L85        PathProgramCache]: Analyzing trace with hash -1372605735, now seen corresponding path program 1 times
[2023-12-24 03:42:00,272 INFO  L118   FreeRefinementEngine]: Executing refinement strategy WOLF
[2023-12-24 03:42:00,272 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [464020167]
[2023-12-24 03:42:00,272 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-24 03:42:00,272 INFO  L173          SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3
[2023-12-24 03:42:00,272 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat
[2023-12-24 03:42:00,273 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)
[2023-12-24 03:42:00,276 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
[2023-12-24 03:42:00,557 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-24 03:42:00,569 INFO  L262         TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 9 conjunts are in the unsatisfiable core
[2023-12-24 03:42:00,573 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-24 03:42:01,359 INFO  L134       CoverageAnalysis]: Checked inductivity of 760 backedges. 40 proven. 108 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked.
[2023-12-24 03:42:01,359 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-12-24 03:42:01,525 INFO  L134       CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked.
[2023-12-24 03:42:01,525 INFO  L136   FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2023-12-24 03:42:01,525 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [464020167]
[2023-12-24 03:42:01,526 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleMathsat [464020167] provided 1 perfect and 1 imperfect interpolant sequences
[2023-12-24 03:42:01,526 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2023-12-24 03:42:01,526 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [10] total 12
[2023-12-24 03:42:01,526 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1360540708]
[2023-12-24 03:42:01,526 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-24 03:42:01,527 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-12-24 03:42:01,527 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2023-12-24 03:42:01,527 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-12-24 03:42:01,528 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132
[2023-12-24 03:42:01,528 INFO  L87              Difference]: Start difference. First operand 94 states and 141 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, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20)
[2023-12-24 03:42:03,290 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.64s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers []
[2023-12-24 03:42:05,614 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.19s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers []
[2023-12-24 03:42:05,753 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-24 03:42:05,754 INFO  L93              Difference]: Finished difference Result 175 states and 262 transitions.
[2023-12-24 03:42:05,754 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2023-12-24 03:42:05,754 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, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 128
[2023-12-24 03:42:05,755 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-24 03:42:05,756 INFO  L225             Difference]: With dead ends: 175
[2023-12-24 03:42:05,756 INFO  L226             Difference]: Without dead ends: 120
[2023-12-24 03:42:05,757 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 255 GetRequests, 244 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156
[2023-12-24 03:42:05,758 INFO  L413           NwaCegarLoop]: 74 mSDtfsCounter, 48 mSDsluCounter, 144 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 218 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time
[2023-12-24 03:42:05,758 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 218 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time]
[2023-12-24 03:42:05,759 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 120 states.
[2023-12-24 03:42:05,775 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 97.
[2023-12-24 03:42:05,775 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 97 states, 54 states have (on average 1.2037037037037037) internal successors, (65), 54 states have internal predecessors, (65), 40 states have call successors, (40), 2 states have call predecessors, (40), 2 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40)
[2023-12-24 03:42:05,776 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 145 transitions.
[2023-12-24 03:42:05,776 INFO  L78                 Accepts]: Start accepts. Automaton has 97 states and 145 transitions. Word has length 128
[2023-12-24 03:42:05,777 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-24 03:42:05,777 INFO  L495      AbstractCegarLoop]: Abstraction has 97 states and 145 transitions.
[2023-12-24 03:42:05,777 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, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20)
[2023-12-24 03:42:05,777 INFO  L276                IsEmpty]: Start isEmpty. Operand 97 states and 145 transitions.
[2023-12-24 03:42:05,779 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 129
[2023-12-24 03:42:05,779 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-24 03:42:05,779 INFO  L195           NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-12-24 03:42:05,792 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
[2023-12-24 03:42:05,990 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
[2023-12-24 03:42:05,991 INFO  L420      AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-24 03:42:05,992 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-24 03:42:05,993 INFO  L85        PathProgramCache]: Analyzing trace with hash -1765632745, now seen corresponding path program 1 times
[2023-12-24 03:42:05,993 INFO  L118   FreeRefinementEngine]: Executing refinement strategy WOLF
[2023-12-24 03:42:05,993 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [785232495]
[2023-12-24 03:42:05,993 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-24 03:42:05,993 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
[2023-12-24 03:42:05,993 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat
[2023-12-24 03:42:05,998 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)
[2023-12-24 03:42:06,000 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
[2023-12-24 03:42:06,311 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-24 03:42:06,323 INFO  L262         TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 45 conjunts are in the unsatisfiable core
[2023-12-24 03:42:06,330 INFO  L285         TraceCheckSpWp]: Computing forward predicates...