/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --cacsl2boogietranslator.allow.undefined.functions true --traceabstraction.smt.solver External_ModelsAndUnsatCoreMode --traceabstraction.command.for.external.solver 'cvc4 --incremental --print-success --lang smt' -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf -i ../../../trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount100_file-70.i


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


This is Ultimate 0.2.5-dev-b75d321-m
[2024-11-03 01:01:49,719 INFO  L188        SettingsManager]: Resetting all preferences to default values...
[2024-11-03 01:01:49,756 INFO  L114        SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf
[2024-11-03 01:01:49,759 WARN  L101        SettingsManager]: Preference file contains the following unknown settings:
[2024-11-03 01:01:49,759 WARN  L103        SettingsManager]:   * de.uni_freiburg.informatik.ultimate.core.Log level for class
[2024-11-03 01:01:49,772 INFO  L130        SettingsManager]: Preferences different from defaults after loading the file:
[2024-11-03 01:01:49,773 INFO  L151        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2024-11-03 01:01:49,773 INFO  L153        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2024-11-03 01:01:49,773 INFO  L151        SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults:
[2024-11-03 01:01:49,773 INFO  L153        SettingsManager]:  * Use memory slicer=true
[2024-11-03 01:01:49,774 INFO  L151        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2024-11-03 01:01:49,774 INFO  L153        SettingsManager]:  * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2024-11-03 01:01:49,774 INFO  L151        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2024-11-03 01:01:49,774 INFO  L153        SettingsManager]:  * Create parallel compositions if possible=false
[2024-11-03 01:01:49,775 INFO  L153        SettingsManager]:  * Use SBE=true
[2024-11-03 01:01:49,775 INFO  L151        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2024-11-03 01:01:49,775 INFO  L153        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2024-11-03 01:01:49,775 INFO  L153        SettingsManager]:  * sizeof long=4
[2024-11-03 01:01:49,776 INFO  L153        SettingsManager]:  * sizeof POINTER=4
[2024-11-03 01:01:49,776 INFO  L153        SettingsManager]:  * Check division by zero=IGNORE
[2024-11-03 01:01:49,776 INFO  L153        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2024-11-03 01:01:49,777 INFO  L153        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2024-11-03 01:01:49,777 INFO  L153        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2024-11-03 01:01:49,777 INFO  L153        SettingsManager]:  * Adapt memory model on pointer casts if necessary=true
[2024-11-03 01:01:49,777 INFO  L153        SettingsManager]:  * Use bitvectors instead of ints=true
[2024-11-03 01:01:49,777 INFO  L153        SettingsManager]:  * Allow undefined functions=false
[2024-11-03 01:01:49,778 INFO  L153        SettingsManager]:  * Memory model=HoenickeLindenmann_4ByteResolution
[2024-11-03 01:01:49,778 INFO  L153        SettingsManager]:  * sizeof long double=12
[2024-11-03 01:01:49,778 INFO  L153        SettingsManager]:  * Check if freed pointer was valid=false
[2024-11-03 01:01:49,778 INFO  L153        SettingsManager]:  * Use constant arrays=true
[2024-11-03 01:01:49,778 INFO  L151        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2024-11-03 01:01:49,779 INFO  L153        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2024-11-03 01:01:49,779 INFO  L153        SettingsManager]:  * Only consider context switches at boundaries of atomic blocks=true
[2024-11-03 01:01:49,779 INFO  L153        SettingsManager]:  * SMT solver=External_DefaultMode
[2024-11-03 01:01:49,779 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2024-11-03 01:01:49,780 INFO  L151        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2024-11-03 01:01:49,780 INFO  L153        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2024-11-03 01:01:49,780 INFO  L153        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopHeads
[2024-11-03 01:01:49,780 INFO  L153        SettingsManager]:  * Trace refinement strategy=WOLF
[2024-11-03 01:01:49,780 INFO  L153        SettingsManager]:  * Command for external solver=cvc4 --incremental --print-success --lang smt
[2024-11-03 01:01:49,781 INFO  L153        SettingsManager]:  * Apply one-shot large block encoding in concurrent analysis=false
[2024-11-03 01:01:49,781 INFO  L153        SettingsManager]:  * Automaton type used in concurrency analysis=PETRI_NET
[2024-11-03 01:01:49,781 INFO  L153        SettingsManager]:  * Order on configurations for Petri net unfoldings=DBO
[2024-11-03 01:01:49,781 INFO  L153        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2024-11-03 01:01:49,782 INFO  L153        SettingsManager]:  * Looper check in Petri net analysis=SEMANTIC
WARNING: An illegal reflective access operation has occurred
WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int)
WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Allow undefined functions -> true
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> External_ModelsAndUnsatCoreMode
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Command for external solver -> cvc4 --incremental --print-success --lang smt
[2024-11-03 01:01:49,930 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2024-11-03 01:01:49,948 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2024-11-03 01:01:49,949 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2024-11-03 01:01:49,951 INFO  L270        PluginConnector]: Initializing CDTParser...
[2024-11-03 01:01:49,951 INFO  L274        PluginConnector]: CDTParser initialized
[2024-11-03 01:01:49,952 INFO  L431   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount100_file-70.i
[2024-11-03 01:01:51,331 INFO  L533              CDTParser]: Created temporary CDT project at NULL
[2024-11-03 01:01:51,527 INFO  L384              CDTParser]: Found 1 translation units.
[2024-11-03 01:01:51,528 INFO  L180              CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount100_file-70.i
[2024-11-03 01:01:51,534 INFO  L427              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/786c8a92c/1272e0a0716c4ac6acc5f41791684a24/FLAG75e463aa3
[2024-11-03 01:01:51,921 INFO  L435              CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/786c8a92c/1272e0a0716c4ac6acc5f41791684a24
[2024-11-03 01:01:51,923 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2024-11-03 01:01:51,924 INFO  L133        ToolchainWalker]: Walking toolchain with 5 elements.
[2024-11-03 01:01:51,926 INFO  L112        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2024-11-03 01:01:51,926 INFO  L270        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2024-11-03 01:01:51,930 INFO  L274        PluginConnector]: CACSL2BoogieTranslator initialized
[2024-11-03 01:01:51,930 INFO  L184        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 01:01:51" (1/1) ...
[2024-11-03 01:01:51,932 INFO  L204        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@40d37d50 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:01:51, skipping insertion in model container
[2024-11-03 01:01:51,932 INFO  L184        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 01:01:51" (1/1) ...
[2024-11-03 01:01:51,959 INFO  L175         MainTranslator]: Built tables and reachable declarations
[2024-11-03 01:01:52,074 WARN  L250   ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount100_file-70.i[916,929]
[2024-11-03 01:01:52,150 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2024-11-03 01:01:52,163 INFO  L200         MainTranslator]: Completed pre-run
[2024-11-03 01:01:52,173 WARN  L250   ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount100_file-70.i[916,929]
[2024-11-03 01:01:52,250 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2024-11-03 01:01:52,272 INFO  L204         MainTranslator]: Completed translation
[2024-11-03 01:01:52,272 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:01:52 WrapperNode
[2024-11-03 01:01:52,272 INFO  L131        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2024-11-03 01:01:52,273 INFO  L112        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2024-11-03 01:01:52,276 INFO  L270        PluginConnector]: Initializing Boogie Procedure Inliner...
[2024-11-03 01:01:52,276 INFO  L274        PluginConnector]: Boogie Procedure Inliner initialized
[2024-11-03 01:01:52,283 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:01:52" (1/1) ...
[2024-11-03 01:01:52,292 INFO  L184        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:01:52" (1/1) ...
[2024-11-03 01:01:52,314 INFO  L138                Inliner]: procedures = 27, calls = 46, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 216
[2024-11-03 01:01:52,315 INFO  L131        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2024-11-03 01:01:52,319 INFO  L112        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2024-11-03 01:01:52,319 INFO  L270        PluginConnector]: Initializing Boogie Preprocessor...
[2024-11-03 01:01:52,319 INFO  L274        PluginConnector]: Boogie Preprocessor initialized
[2024-11-03 01:01:52,334 INFO  L184        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:01:52" (1/1) ...
[2024-11-03 01:01:52,335 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:01:52" (1/1) ...
[2024-11-03 01:01:52,340 INFO  L184        PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:01:52" (1/1) ...
[2024-11-03 01:01:52,353 INFO  L175           MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0].
[2024-11-03 01:01:52,354 INFO  L184        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:01:52" (1/1) ...
[2024-11-03 01:01:52,354 INFO  L184        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:01:52" (1/1) ...
[2024-11-03 01:01:52,364 INFO  L184        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:01:52" (1/1) ...
[2024-11-03 01:01:52,367 INFO  L184        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:01:52" (1/1) ...
[2024-11-03 01:01:52,370 INFO  L184        PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:01:52" (1/1) ...
[2024-11-03 01:01:52,372 INFO  L184        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:01:52" (1/1) ...
[2024-11-03 01:01:52,376 INFO  L131        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2024-11-03 01:01:52,377 INFO  L112        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2024-11-03 01:01:52,377 INFO  L270        PluginConnector]: Initializing RCFGBuilder...
[2024-11-03 01:01:52,377 INFO  L274        PluginConnector]: RCFGBuilder initialized
[2024-11-03 01:01:52,378 INFO  L184        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:01:52" (1/1) ...
[2024-11-03 01:01:52,382 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2024-11-03 01:01:52,397 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2024-11-03 01:01:52,414 INFO  L229       MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null)
[2024-11-03 01:01:52,415 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process
[2024-11-03 01:01:52,434 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2024-11-03 01:01:52,434 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0
[2024-11-03 01:01:52,434 INFO  L130     BoogieDeclarations]: Found specification of procedure assume_abort_if_not
[2024-11-03 01:01:52,434 INFO  L138     BoogieDeclarations]: Found implementation of procedure assume_abort_if_not
[2024-11-03 01:01:52,435 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2024-11-03 01:01:52,435 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2024-11-03 01:01:52,524 INFO  L238             CfgBuilder]: Building ICFG
[2024-11-03 01:01:52,527 INFO  L264             CfgBuilder]: Building CFG for each procedure with an implementation
[2024-11-03 01:01:56,195 INFO  L?                        ?]: Removed 18 outVars from TransFormulas that were not future-live.
[2024-11-03 01:01:56,196 INFO  L287             CfgBuilder]: Performing block encoding
[2024-11-03 01:01:56,219 INFO  L311             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2024-11-03 01:01:56,219 INFO  L316             CfgBuilder]: Removed 1 assume(true) statements.
[2024-11-03 01:01:56,220 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 01:01:56 BoogieIcfgContainer
[2024-11-03 01:01:56,220 INFO  L131        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2024-11-03 01:01:56,221 INFO  L112        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2024-11-03 01:01:56,221 INFO  L270        PluginConnector]: Initializing TraceAbstraction...
[2024-11-03 01:01:56,228 INFO  L274        PluginConnector]: TraceAbstraction initialized
[2024-11-03 01:01:56,228 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 01:01:51" (1/3) ...
[2024-11-03 01:01:56,232 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e019aeb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 01:01:56, skipping insertion in model container
[2024-11-03 01:01:56,232 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:01:52" (2/3) ...
[2024-11-03 01:01:56,232 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e019aeb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 01:01:56, skipping insertion in model container
[2024-11-03 01:01:56,233 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 01:01:56" (3/3) ...
[2024-11-03 01:01:56,235 INFO  L112   eAbstractionObserver]: Analyzing ICFG hardness_operatoramount_amount100_file-70.i
[2024-11-03 01:01:56,246 INFO  L214   ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2024-11-03 01:01:56,247 INFO  L154   ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2024-11-03 01:01:56,311 INFO  L332      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2024-11-03 01:01:56,320 INFO  L333      AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@3b589cd7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2024-11-03 01:01:56,323 INFO  L334      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2024-11-03 01:01:56,331 INFO  L276                IsEmpty]: Start isEmpty. Operand  has 95 states, 59 states have (on average 1.4067796610169492) internal successors, (83), 60 states have internal predecessors, (83), 33 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 33 states have call predecessors, (33), 33 states have call successors, (33)
[2024-11-03 01:01:56,353 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 211
[2024-11-03 01:01:56,353 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-03 01:01:56,354 INFO  L215           NwaCegarLoop]: trace histogram [33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-03 01:01:56,355 INFO  L396      AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-03 01:01:56,359 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-03 01:01:56,360 INFO  L85        PathProgramCache]: Analyzing trace with hash -1956773144, now seen corresponding path program 1 times
[2024-11-03 01:01:56,367 INFO  L118   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2024-11-03 01:01:56,368 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1328814061]
[2024-11-03 01:01:56,368 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-03 01:01:56,370 INFO  L173          SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt
[2024-11-03 01:01:56,370 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4
[2024-11-03 01:01:56,377 INFO  L229       MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null)
[2024-11-03 01:01:56,382 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (2)] Waiting until timeout for monitored process
[2024-11-03 01:01:56,933 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-03 01:01:56,952 INFO  L255         TraceCheckSpWp]: Trace formula consists of 347 conjuncts, 1 conjuncts are in the unsatisfiable core
[2024-11-03 01:01:56,961 INFO  L278         TraceCheckSpWp]: Computing forward predicates...
[2024-11-03 01:01:57,049 INFO  L134       CoverageAnalysis]: Checked inductivity of 2112 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 2048 trivial. 0 not checked.
[2024-11-03 01:01:57,050 INFO  L311         TraceCheckSpWp]: Computing backward predicates...
[2024-11-03 01:01:57,281 INFO  L134       CoverageAnalysis]: Checked inductivity of 2112 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 2048 trivial. 0 not checked.
[2024-11-03 01:01:57,282 INFO  L136   FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2024-11-03 01:01:57,283 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1328814061]
[2024-11-03 01:01:57,283 INFO  L158   FreeRefinementEngine]: IpTcStrategyModulePreferences [1328814061] provided 2 perfect and 0 imperfect interpolant sequences
[2024-11-03 01:01:57,286 INFO  L185   FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences.
[2024-11-03 01:01:57,286 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2
[2024-11-03 01:01:57,287 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [175437722]
[2024-11-03 01:01:57,287 INFO  L85    oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton
[2024-11-03 01:01:57,291 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 2 states
[2024-11-03 01:01:57,291 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2024-11-03 01:01:57,304 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants.
[2024-11-03 01:01:57,304 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2024-11-03 01:01:57,306 INFO  L87              Difference]: Start difference. First operand  has 95 states, 59 states have (on average 1.4067796610169492) internal successors, (83), 60 states have internal predecessors, (83), 33 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 33 states have call predecessors, (33), 33 states have call successors, (33) Second operand  has 2 states, 2 states have (on average 25.0) internal successors, (50), 2 states have internal predecessors, (50), 1 states have call successors, (33), 1 states have call predecessors, (33), 2 states have return successors, (33), 2 states have call predecessors, (33), 1 states have call successors, (33)
[2024-11-03 01:01:57,328 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-03 01:01:57,328 INFO  L93              Difference]: Finished difference Result 183 states and 325 transitions.
[2024-11-03 01:01:57,329 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. 
[2024-11-03 01:01:57,330 INFO  L78                 Accepts]: Start accepts. Automaton has  has 2 states, 2 states have (on average 25.0) internal successors, (50), 2 states have internal predecessors, (50), 1 states have call successors, (33), 1 states have call predecessors, (33), 2 states have return successors, (33), 2 states have call predecessors, (33), 1 states have call successors, (33) Word has length 210
[2024-11-03 01:01:57,330 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-03 01:01:57,336 INFO  L225             Difference]: With dead ends: 183
[2024-11-03 01:01:57,336 INFO  L226             Difference]: Without dead ends: 91
[2024-11-03 01:01:57,342 INFO  L431           NwaCegarLoop]: 0 DeclaredPredicates, 418 GetRequests, 418 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2024-11-03 01:01:57,344 INFO  L432           NwaCegarLoop]: 142 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 142 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2024-11-03 01:01:57,345 INFO  L433           NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 142 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2024-11-03 01:01:57,357 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 91 states.
[2024-11-03 01:01:57,378 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 91.
[2024-11-03 01:01:57,378 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 91 states, 56 states have (on average 1.3571428571428572) internal successors, (76), 56 states have internal predecessors, (76), 33 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 33 states have call predecessors, (33), 33 states have call successors, (33)
[2024-11-03 01:01:57,383 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 142 transitions.
[2024-11-03 01:01:57,384 INFO  L78                 Accepts]: Start accepts. Automaton has 91 states and 142 transitions. Word has length 210
[2024-11-03 01:01:57,385 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-03 01:01:57,385 INFO  L471      AbstractCegarLoop]: Abstraction has 91 states and 142 transitions.
[2024-11-03 01:01:57,385 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 2 states, 2 states have (on average 25.0) internal successors, (50), 2 states have internal predecessors, (50), 1 states have call successors, (33), 1 states have call predecessors, (33), 2 states have return successors, (33), 2 states have call predecessors, (33), 1 states have call successors, (33)
[2024-11-03 01:01:57,385 INFO  L276                IsEmpty]: Start isEmpty. Operand 91 states and 142 transitions.
[2024-11-03 01:01:57,387 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 211
[2024-11-03 01:01:57,387 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-03 01:01:57,388 INFO  L215           NwaCegarLoop]: trace histogram [33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-03 01:01:57,395 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (2)] Forceful destruction successful, exit code 0
[2024-11-03 01:01:57,591 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt
[2024-11-03 01:01:57,592 INFO  L396      AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-03 01:01:57,592 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-03 01:01:57,592 INFO  L85        PathProgramCache]: Analyzing trace with hash 1072816226, now seen corresponding path program 1 times
[2024-11-03 01:01:57,592 INFO  L118   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2024-11-03 01:01:57,593 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2084974798]
[2024-11-03 01:01:57,593 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-03 01:01:57,593 INFO  L173          SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt
[2024-11-03 01:01:57,593 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4
[2024-11-03 01:01:57,595 INFO  L229       MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null)
[2024-11-03 01:01:57,596 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (3)] Waiting until timeout for monitored process
[2024-11-03 01:01:58,836 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-03 01:01:58,853 INFO  L255         TraceCheckSpWp]: Trace formula consists of 347 conjuncts, 8 conjuncts are in the unsatisfiable core
[2024-11-03 01:01:58,865 INFO  L278         TraceCheckSpWp]: Computing forward predicates...
[2024-11-03 01:02:01,626 INFO  L134       CoverageAnalysis]: Checked inductivity of 2112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2112 trivial. 0 not checked.
[2024-11-03 01:02:01,626 INFO  L311         TraceCheckSpWp]: Computing backward predicates...
[2024-11-03 01:02:03,339 INFO  L134       CoverageAnalysis]: Checked inductivity of 2112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2112 trivial. 0 not checked.
[2024-11-03 01:02:03,340 INFO  L136   FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2024-11-03 01:02:03,340 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2084974798]
[2024-11-03 01:02:03,340 INFO  L158   FreeRefinementEngine]: IpTcStrategyModulePreferences [2084974798] provided 2 perfect and 0 imperfect interpolant sequences
[2024-11-03 01:02:03,340 INFO  L185   FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences.
[2024-11-03 01:02:03,340 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 5] imperfect sequences [] total 8
[2024-11-03 01:02:03,341 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1137846276]
[2024-11-03 01:02:03,341 INFO  L85    oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton
[2024-11-03 01:02:03,342 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 8 states
[2024-11-03 01:02:03,342 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2024-11-03 01:02:03,343 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2024-11-03 01:02:03,343 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56
[2024-11-03 01:02:03,343 INFO  L87              Difference]: Start difference. First operand 91 states and 142 transitions. Second operand  has 8 states, 8 states have (on average 10.0) internal successors, (80), 8 states have internal predecessors, (80), 2 states have call successors, (66), 2 states have call predecessors, (66), 2 states have return successors, (66), 2 states have call predecessors, (66), 2 states have call successors, (66)
[2024-11-03 01:02:07,818 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.78s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers []
[2024-11-03 01:02:11,038 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.83s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers []
[2024-11-03 01:02:11,080 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-03 01:02:11,081 INFO  L93              Difference]: Finished difference Result 280 states and 442 transitions.
[2024-11-03 01:02:11,110 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2024-11-03 01:02:11,110 INFO  L78                 Accepts]: Start accepts. Automaton has  has 8 states, 8 states have (on average 10.0) internal successors, (80), 8 states have internal predecessors, (80), 2 states have call successors, (66), 2 states have call predecessors, (66), 2 states have return successors, (66), 2 states have call predecessors, (66), 2 states have call successors, (66) Word has length 210
[2024-11-03 01:02:11,111 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-03 01:02:11,113 INFO  L225             Difference]: With dead ends: 280
[2024-11-03 01:02:11,114 INFO  L226             Difference]: Without dead ends: 192
[2024-11-03 01:02:11,115 INFO  L431           NwaCegarLoop]: 0 DeclaredPredicates, 421 GetRequests, 413 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90
[2024-11-03 01:02:11,116 INFO  L432           NwaCegarLoop]: 142 mSDtfsCounter, 107 mSDsluCounter, 642 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 784 SdHoareTripleChecker+Invalid, 171 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.6s IncrementalHoareTripleChecker+Time
[2024-11-03 01:02:11,116 INFO  L433           NwaCegarLoop]: SdHoareTripleChecker [107 Valid, 784 Invalid, 171 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 7.6s Time]
[2024-11-03 01:02:11,117 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 192 states.
[2024-11-03 01:02:11,147 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 157.
[2024-11-03 01:02:11,148 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 157 states, 88 states have (on average 1.2840909090909092) internal successors, (113), 88 states have internal predecessors, (113), 66 states have call successors, (66), 2 states have call predecessors, (66), 2 states have return successors, (66), 66 states have call predecessors, (66), 66 states have call successors, (66)
[2024-11-03 01:02:11,151 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 245 transitions.
[2024-11-03 01:02:11,152 INFO  L78                 Accepts]: Start accepts. Automaton has 157 states and 245 transitions. Word has length 210
[2024-11-03 01:02:11,153 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-03 01:02:11,153 INFO  L471      AbstractCegarLoop]: Abstraction has 157 states and 245 transitions.
[2024-11-03 01:02:11,156 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 8 states, 8 states have (on average 10.0) internal successors, (80), 8 states have internal predecessors, (80), 2 states have call successors, (66), 2 states have call predecessors, (66), 2 states have return successors, (66), 2 states have call predecessors, (66), 2 states have call successors, (66)
[2024-11-03 01:02:11,156 INFO  L276                IsEmpty]: Start isEmpty. Operand 157 states and 245 transitions.
[2024-11-03 01:02:11,158 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 212
[2024-11-03 01:02:11,158 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-03 01:02:11,158 INFO  L215           NwaCegarLoop]: trace histogram [33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-03 01:02:11,171 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (3)] Ended with exit code 0
[2024-11-03 01:02:11,362 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt
[2024-11-03 01:02:11,363 INFO  L396      AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-03 01:02:11,363 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-03 01:02:11,363 INFO  L85        PathProgramCache]: Analyzing trace with hash -1060584807, now seen corresponding path program 1 times
[2024-11-03 01:02:11,364 INFO  L118   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2024-11-03 01:02:11,364 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1105090451]
[2024-11-03 01:02:11,364 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-03 01:02:11,364 INFO  L173          SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt
[2024-11-03 01:02:11,364 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4
[2024-11-03 01:02:11,366 INFO  L229       MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null)
[2024-11-03 01:02:11,367 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (4)] Waiting until timeout for monitored process
[2024-11-03 01:02:12,440 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-03 01:02:12,458 INFO  L255         TraceCheckSpWp]: Trace formula consists of 349 conjuncts, 4 conjuncts are in the unsatisfiable core
[2024-11-03 01:02:12,464 INFO  L278         TraceCheckSpWp]: Computing forward predicates...
[2024-11-03 01:02:13,054 INFO  L134       CoverageAnalysis]: Checked inductivity of 2112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2112 trivial. 0 not checked.
[2024-11-03 01:02:13,055 INFO  L311         TraceCheckSpWp]: Computing backward predicates...
[2024-11-03 01:02:13,807 INFO  L134       CoverageAnalysis]: Checked inductivity of 2112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2112 trivial. 0 not checked.
[2024-11-03 01:02:13,808 INFO  L136   FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2024-11-03 01:02:13,808 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1105090451]
[2024-11-03 01:02:13,808 INFO  L158   FreeRefinementEngine]: IpTcStrategyModulePreferences [1105090451] provided 2 perfect and 0 imperfect interpolant sequences
[2024-11-03 01:02:13,808 INFO  L185   FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences.
[2024-11-03 01:02:13,808 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 5] imperfect sequences [] total 8
[2024-11-03 01:02:13,808 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [235820860]
[2024-11-03 01:02:13,808 INFO  L85    oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton
[2024-11-03 01:02:13,809 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 8 states
[2024-11-03 01:02:13,809 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2024-11-03 01:02:13,812 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2024-11-03 01:02:13,812 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56
[2024-11-03 01:02:13,813 INFO  L87              Difference]: Start difference. First operand 157 states and 245 transitions. Second operand  has 8 states, 8 states have (on average 11.375) internal successors, (91), 8 states have internal predecessors, (91), 2 states have call successors, (66), 2 states have call predecessors, (66), 2 states have return successors, (66), 2 states have call predecessors, (66), 2 states have call successors, (66)
[2024-11-03 01:02:18,203 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.07s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers []
[2024-11-03 01:02:22,334 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.09s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers []
[2024-11-03 01:02:27,210 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.07s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [1]
[2024-11-03 01:02:28,376 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.17s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers []
[2024-11-03 01:02:28,377 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-03 01:02:28,377 INFO  L93              Difference]: Finished difference Result 433 states and 676 transitions.
[2024-11-03 01:02:28,406 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2024-11-03 01:02:28,407 INFO  L78                 Accepts]: Start accepts. Automaton has  has 8 states, 8 states have (on average 11.375) internal successors, (91), 8 states have internal predecessors, (91), 2 states have call successors, (66), 2 states have call predecessors, (66), 2 states have return successors, (66), 2 states have call predecessors, (66), 2 states have call successors, (66) Word has length 211
[2024-11-03 01:02:28,407 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-03 01:02:28,416 INFO  L225             Difference]: With dead ends: 433
[2024-11-03 01:02:28,416 INFO  L226             Difference]: Without dead ends: 345
[2024-11-03 01:02:28,417 INFO  L431           NwaCegarLoop]: 0 DeclaredPredicates, 424 GetRequests, 416 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90
[2024-11-03 01:02:28,418 INFO  L432           NwaCegarLoop]: 232 mSDtfsCounter, 339 mSDsluCounter, 690 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 134 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 339 SdHoareTripleChecker+Valid, 922 SdHoareTripleChecker+Invalid, 185 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 134 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.5s IncrementalHoareTripleChecker+Time
[2024-11-03 01:02:28,418 INFO  L433           NwaCegarLoop]: SdHoareTripleChecker [339 Valid, 922 Invalid, 185 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [134 Valid, 48 Invalid, 3 Unknown, 0 Unchecked, 14.5s Time]
[2024-11-03 01:02:28,419 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 345 states.
[2024-11-03 01:02:28,523 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 345 to 260.
[2024-11-03 01:02:28,524 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 260 states, 157 states have (on average 1.356687898089172) internal successors, (213), 157 states have internal predecessors, (213), 99 states have call successors, (99), 3 states have call predecessors, (99), 3 states have return successors, (99), 99 states have call predecessors, (99), 99 states have call successors, (99)
[2024-11-03 01:02:28,529 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 260 states to 260 states and 411 transitions.
[2024-11-03 01:02:28,530 INFO  L78                 Accepts]: Start accepts. Automaton has 260 states and 411 transitions. Word has length 211
[2024-11-03 01:02:28,530 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-03 01:02:28,531 INFO  L471      AbstractCegarLoop]: Abstraction has 260 states and 411 transitions.
[2024-11-03 01:02:28,531 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 8 states, 8 states have (on average 11.375) internal successors, (91), 8 states have internal predecessors, (91), 2 states have call successors, (66), 2 states have call predecessors, (66), 2 states have return successors, (66), 2 states have call predecessors, (66), 2 states have call successors, (66)
[2024-11-03 01:02:28,531 INFO  L276                IsEmpty]: Start isEmpty. Operand 260 states and 411 transitions.
[2024-11-03 01:02:28,536 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 212
[2024-11-03 01:02:28,536 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-03 01:02:28,537 INFO  L215           NwaCegarLoop]: trace histogram [33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-03 01:02:28,569 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (4)] Forceful destruction successful, exit code 0
[2024-11-03 01:02:28,737 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt
[2024-11-03 01:02:28,737 INFO  L396      AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-03 01:02:28,738 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-03 01:02:28,738 INFO  L85        PathProgramCache]: Analyzing trace with hash -1869931433, now seen corresponding path program 1 times
[2024-11-03 01:02:28,738 INFO  L118   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2024-11-03 01:02:28,738 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [878294911]
[2024-11-03 01:02:28,738 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-03 01:02:28,738 INFO  L173          SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt
[2024-11-03 01:02:28,739 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4
[2024-11-03 01:02:28,741 INFO  L229       MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null)
[2024-11-03 01:02:28,746 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (5)] Waiting until timeout for monitored process
[2024-11-03 01:02:30,249 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-03 01:02:30,286 INFO  L255         TraceCheckSpWp]: Trace formula consists of 348 conjuncts, 6 conjuncts are in the unsatisfiable core
[2024-11-03 01:02:30,290 INFO  L278         TraceCheckSpWp]: Computing forward predicates...
[2024-11-03 01:02:31,376 INFO  L134       CoverageAnalysis]: Checked inductivity of 2112 backedges. 746 proven. 75 refuted. 0 times theorem prover too weak. 1291 trivial. 0 not checked.
[2024-11-03 01:02:31,376 INFO  L311         TraceCheckSpWp]: Computing backward predicates...
[2024-11-03 01:02:32,409 INFO  L134       CoverageAnalysis]: Checked inductivity of 2112 backedges. 21 proven. 75 refuted. 0 times theorem prover too weak. 2016 trivial. 0 not checked.
[2024-11-03 01:02:32,409 INFO  L136   FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2024-11-03 01:02:32,409 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [878294911]
[2024-11-03 01:02:32,409 INFO  L158   FreeRefinementEngine]: IpTcStrategyModulePreferences [878294911] provided 0 perfect and 2 imperfect interpolant sequences
[2024-11-03 01:02:32,409 INFO  L185   FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2024-11-03 01:02:32,409 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10
[2024-11-03 01:02:32,410 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [489424743]
[2024-11-03 01:02:32,410 INFO  L85    oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2024-11-03 01:02:32,410 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 10 states
[2024-11-03 01:02:32,410 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2024-11-03 01:02:32,411 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants.
[2024-11-03 01:02:32,411 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90
[2024-11-03 01:02:32,413 INFO  L87              Difference]: Start difference. First operand 260 states and 411 transitions. Second operand  has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 3 states have call successors, (58), 2 states have call predecessors, (58), 4 states have return successors, (59), 3 states have call predecessors, (59), 3 states have call successors, (59)
[2024-11-03 01:02:35,535 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0]
[2024-11-03 01:02:38,094 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.55s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0]
[2024-11-03 01:02:39,492 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-03 01:02:39,492 INFO  L93              Difference]: Finished difference Result 668 states and 1042 transitions.
[2024-11-03 01:02:39,493 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. 
[2024-11-03 01:02:39,493 INFO  L78                 Accepts]: Start accepts. Automaton has  has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 3 states have call successors, (58), 2 states have call predecessors, (58), 4 states have return successors, (59), 3 states have call predecessors, (59), 3 states have call successors, (59) Word has length 211
[2024-11-03 01:02:39,494 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-03 01:02:39,500 INFO  L225             Difference]: With dead ends: 668
[2024-11-03 01:02:39,500 INFO  L226             Difference]: Without dead ends: 479
[2024-11-03 01:02:39,501 INFO  L431           NwaCegarLoop]: 0 DeclaredPredicates, 434 GetRequests, 414 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=152, Invalid=310, Unknown=0, NotChecked=0, Total=462
[2024-11-03 01:02:39,503 INFO  L432           NwaCegarLoop]: 181 mSDtfsCounter, 287 mSDsluCounter, 290 mSDsCounter, 0 mSdLazyCounter, 450 mSolverCounterSat, 164 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 289 SdHoareTripleChecker+Valid, 471 SdHoareTripleChecker+Invalid, 614 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 164 IncrementalHoareTripleChecker+Valid, 450 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.6s IncrementalHoareTripleChecker+Time
[2024-11-03 01:02:39,503 INFO  L433           NwaCegarLoop]: SdHoareTripleChecker [289 Valid, 471 Invalid, 614 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [164 Valid, 450 Invalid, 0 Unknown, 0 Unchecked, 6.6s Time]
[2024-11-03 01:02:39,508 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 479 states.
[2024-11-03 01:02:39,556 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 479 to 272.
[2024-11-03 01:02:39,558 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 272 states, 166 states have (on average 1.319277108433735) internal successors, (219), 166 states have internal predecessors, (219), 99 states have call successors, (99), 6 states have call predecessors, (99), 6 states have return successors, (99), 99 states have call predecessors, (99), 99 states have call successors, (99)
[2024-11-03 01:02:39,560 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 272 states to 272 states and 417 transitions.
[2024-11-03 01:02:39,560 INFO  L78                 Accepts]: Start accepts. Automaton has 272 states and 417 transitions. Word has length 211
[2024-11-03 01:02:39,561 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-03 01:02:39,562 INFO  L471      AbstractCegarLoop]: Abstraction has 272 states and 417 transitions.
[2024-11-03 01:02:39,563 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 3 states have call successors, (58), 2 states have call predecessors, (58), 4 states have return successors, (59), 3 states have call predecessors, (59), 3 states have call successors, (59)
[2024-11-03 01:02:39,563 INFO  L276                IsEmpty]: Start isEmpty. Operand 272 states and 417 transitions.
[2024-11-03 01:02:39,564 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 213
[2024-11-03 01:02:39,564 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-03 01:02:39,565 INFO  L215           NwaCegarLoop]: trace histogram [33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-03 01:02:39,580 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (5)] Ended with exit code 0
[2024-11-03 01:02:39,765 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt
[2024-11-03 01:02:39,765 INFO  L396      AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-03 01:02:39,766 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-03 01:02:39,766 INFO  L85        PathProgramCache]: Analyzing trace with hash -744540726, now seen corresponding path program 1 times
[2024-11-03 01:02:39,766 INFO  L118   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2024-11-03 01:02:39,766 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [10892641]
[2024-11-03 01:02:39,766 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-03 01:02:39,766 INFO  L173          SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt
[2024-11-03 01:02:39,766 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4
[2024-11-03 01:02:39,769 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)
[2024-11-03 01:02:39,770 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (6)] Waiting until timeout for monitored process
[2024-11-03 01:02:42,067 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-03 01:02:42,095 INFO  L255         TraceCheckSpWp]: Trace formula consists of 350 conjuncts, 3 conjuncts are in the unsatisfiable core
[2024-11-03 01:02:42,098 INFO  L278         TraceCheckSpWp]: Computing forward predicates...
[2024-11-03 01:02:42,190 INFO  L134       CoverageAnalysis]: Checked inductivity of 2112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2112 trivial. 0 not checked.
[2024-11-03 01:02:42,190 INFO  L311         TraceCheckSpWp]: Computing backward predicates...
[2024-11-03 01:02:42,407 INFO  L134       CoverageAnalysis]: Checked inductivity of 2112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2112 trivial. 0 not checked.
[2024-11-03 01:02:42,411 INFO  L136   FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2024-11-03 01:02:42,411 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [10892641]
[2024-11-03 01:02:42,411 INFO  L158   FreeRefinementEngine]: IpTcStrategyModulePreferences [10892641] provided 2 perfect and 0 imperfect interpolant sequences
[2024-11-03 01:02:42,411 INFO  L185   FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences.
[2024-11-03 01:02:42,411 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6
[2024-11-03 01:02:42,411 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [117732061]
[2024-11-03 01:02:42,411 INFO  L85    oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton
[2024-11-03 01:02:42,412 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2024-11-03 01:02:42,412 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2024-11-03 01:02:42,412 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2024-11-03 01:02:42,412 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30
[2024-11-03 01:02:42,413 INFO  L87              Difference]: Start difference. First operand 272 states and 417 transitions. Second operand  has 6 states, 6 states have (on average 9.5) internal successors, (57), 6 states have internal predecessors, (57), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33)
[2024-11-03 01:02:46,874 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.10s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers []
[2024-11-03 01:02:48,079 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.20s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers []
[2024-11-03 01:02:48,665 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-03 01:02:48,665 INFO  L93              Difference]: Finished difference Result 666 states and 1029 transitions.
[2024-11-03 01:02:48,668 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2024-11-03 01:02:48,668 INFO  L78                 Accepts]: Start accepts. Automaton has  has 6 states, 6 states have (on average 9.5) internal successors, (57), 6 states have internal predecessors, (57), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) Word has length 212
[2024-11-03 01:02:48,669 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-03 01:02:48,671 INFO  L225             Difference]: With dead ends: 666
[2024-11-03 01:02:48,671 INFO  L226             Difference]: Without dead ends: 469
[2024-11-03 01:02:48,672 INFO  L431           NwaCegarLoop]: 0 DeclaredPredicates, 423 GetRequests, 418 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42
[2024-11-03 01:02:48,673 INFO  L432           NwaCegarLoop]: 250 mSDtfsCounter, 129 mSDsluCounter, 427 mSDsCounter, 0 mSdLazyCounter, 132 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 129 SdHoareTripleChecker+Valid, 677 SdHoareTripleChecker+Invalid, 133 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 132 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.1s IncrementalHoareTripleChecker+Time
[2024-11-03 01:02:48,673 INFO  L433           NwaCegarLoop]: SdHoareTripleChecker [129 Valid, 677 Invalid, 133 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 132 Invalid, 1 Unknown, 0 Unchecked, 6.1s Time]
[2024-11-03 01:02:48,673 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 469 states.
[2024-11-03 01:02:48,709 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 469 to 464.
[2024-11-03 01:02:48,710 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 464 states, 288 states have (on average 1.3333333333333333) internal successors, (384), 288 states have internal predecessors, (384), 165 states have call successors, (165), 10 states have call predecessors, (165), 10 states have return successors, (165), 165 states have call predecessors, (165), 165 states have call successors, (165)
[2024-11-03 01:02:48,712 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 464 states to 464 states and 714 transitions.
[2024-11-03 01:02:48,712 INFO  L78                 Accepts]: Start accepts. Automaton has 464 states and 714 transitions. Word has length 212
[2024-11-03 01:02:48,713 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-03 01:02:48,713 INFO  L471      AbstractCegarLoop]: Abstraction has 464 states and 714 transitions.
[2024-11-03 01:02:48,713 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 6 states, 6 states have (on average 9.5) internal successors, (57), 6 states have internal predecessors, (57), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33)
[2024-11-03 01:02:48,713 INFO  L276                IsEmpty]: Start isEmpty. Operand 464 states and 714 transitions.
[2024-11-03 01:02:48,714 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 213
[2024-11-03 01:02:48,715 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-03 01:02:48,715 INFO  L215           NwaCegarLoop]: trace histogram [33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-03 01:02:48,731 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (6)] Forceful destruction successful, exit code 0
[2024-11-03 01:02:48,915 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt
[2024-11-03 01:02:48,915 INFO  L396      AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-03 01:02:48,916 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-03 01:02:48,916 INFO  L85        PathProgramCache]: Analyzing trace with hash -742693684, now seen corresponding path program 1 times
[2024-11-03 01:02:48,916 INFO  L118   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2024-11-03 01:02:48,916 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1620352713]
[2024-11-03 01:02:48,916 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-03 01:02:48,916 INFO  L173          SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt
[2024-11-03 01:02:48,916 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4
[2024-11-03 01:02:48,918 INFO  L229       MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null)
[2024-11-03 01:02:48,919 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (7)] Waiting until timeout for monitored process
[2024-11-03 01:02:51,352 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-03 01:02:51,446 INFO  L255         TraceCheckSpWp]: Trace formula consists of 350 conjuncts, 64 conjuncts are in the unsatisfiable core
[2024-11-03 01:02:51,460 INFO  L278         TraceCheckSpWp]: Computing forward predicates...