/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_amount500_file-79.i


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


This is Ultimate 0.2.5-dev-b75d321-m
[2024-11-03 01:45:58,199 INFO  L188        SettingsManager]: Resetting all preferences to default values...
[2024-11-03 01:45:58,292 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 01:45:58,298 WARN  L101        SettingsManager]: Preference file contains the following unknown settings:
[2024-11-03 01:45:58,299 WARN  L103        SettingsManager]:   * de.uni_freiburg.informatik.ultimate.core.Log level for class
[2024-11-03 01:45:58,330 INFO  L130        SettingsManager]: Preferences different from defaults after loading the file:
[2024-11-03 01:45:58,331 INFO  L151        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2024-11-03 01:45:58,331 INFO  L153        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2024-11-03 01:45:58,332 INFO  L151        SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults:
[2024-11-03 01:45:58,332 INFO  L153        SettingsManager]:  * Use memory slicer=true
[2024-11-03 01:45:58,334 INFO  L151        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2024-11-03 01:45:58,335 INFO  L153        SettingsManager]:  * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2024-11-03 01:45:58,336 INFO  L151        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2024-11-03 01:45:58,339 INFO  L153        SettingsManager]:  * Create parallel compositions if possible=false
[2024-11-03 01:45:58,340 INFO  L153        SettingsManager]:  * Use SBE=true
[2024-11-03 01:45:58,340 INFO  L151        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2024-11-03 01:45:58,340 INFO  L153        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2024-11-03 01:45:58,341 INFO  L153        SettingsManager]:  * sizeof long=4
[2024-11-03 01:45:58,341 INFO  L153        SettingsManager]:  * sizeof POINTER=4
[2024-11-03 01:45:58,341 INFO  L153        SettingsManager]:  * Check division by zero=IGNORE
[2024-11-03 01:45:58,341 INFO  L153        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2024-11-03 01:45:58,347 INFO  L153        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2024-11-03 01:45:58,348 INFO  L153        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2024-11-03 01:45:58,348 INFO  L153        SettingsManager]:  * Adapt memory model on pointer casts if necessary=true
[2024-11-03 01:45:58,348 INFO  L153        SettingsManager]:  * Use bitvectors instead of ints=true
[2024-11-03 01:45:58,348 INFO  L153        SettingsManager]:  * Allow undefined functions=false
[2024-11-03 01:45:58,349 INFO  L153        SettingsManager]:  * Memory model=HoenickeLindenmann_4ByteResolution
[2024-11-03 01:45:58,349 INFO  L153        SettingsManager]:  * sizeof long double=12
[2024-11-03 01:45:58,349 INFO  L153        SettingsManager]:  * Check if freed pointer was valid=false
[2024-11-03 01:45:58,350 INFO  L153        SettingsManager]:  * Use constant arrays=true
[2024-11-03 01:45:58,350 INFO  L151        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2024-11-03 01:45:58,350 INFO  L153        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2024-11-03 01:45:58,350 INFO  L153        SettingsManager]:  * Only consider context switches at boundaries of atomic blocks=true
[2024-11-03 01:45:58,351 INFO  L153        SettingsManager]:  * SMT solver=External_DefaultMode
[2024-11-03 01:45:58,351 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2024-11-03 01:45:58,351 INFO  L151        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2024-11-03 01:45:58,351 INFO  L153        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2024-11-03 01:45:58,352 INFO  L153        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopHeads
[2024-11-03 01:45:58,352 INFO  L153        SettingsManager]:  * Trace refinement strategy=WOLF
[2024-11-03 01:45:58,352 INFO  L153        SettingsManager]:  * Command for external solver=cvc4 --incremental --print-success --lang smt
[2024-11-03 01:45:58,352 INFO  L153        SettingsManager]:  * Apply one-shot large block encoding in concurrent analysis=false
[2024-11-03 01:45:58,354 INFO  L153        SettingsManager]:  * Automaton type used in concurrency analysis=PETRI_NET
[2024-11-03 01:45:58,354 INFO  L153        SettingsManager]:  * Order on configurations for Petri net unfoldings=DBO
[2024-11-03 01:45:58,354 INFO  L153        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2024-11-03 01:45:58,354 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$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Allow undefined functions -> true
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> External_ModelsAndUnsatCoreMode
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Command for external solver -> cvc4 --incremental --print-success --lang smt
[2024-11-03 01:45:58,595 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2024-11-03 01:45:58,620 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2024-11-03 01:45:58,625 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2024-11-03 01:45:58,626 INFO  L270        PluginConnector]: Initializing CDTParser...
[2024-11-03 01:45:58,627 INFO  L274        PluginConnector]: CDTParser initialized
[2024-11-03 01:45:58,628 INFO  L431   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount500_file-79.i
[2024-11-03 01:46:00,034 INFO  L533              CDTParser]: Created temporary CDT project at NULL
[2024-11-03 01:46:00,290 INFO  L384              CDTParser]: Found 1 translation units.
[2024-11-03 01:46:00,291 INFO  L180              CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount500_file-79.i
[2024-11-03 01:46:00,314 INFO  L427              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7fd8620f9/dc96824ef4944c4786c05054e9bd3341/FLAG0ddd663b0
[2024-11-03 01:46:00,612 INFO  L435              CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7fd8620f9/dc96824ef4944c4786c05054e9bd3341
[2024-11-03 01:46:00,614 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2024-11-03 01:46:00,615 INFO  L133        ToolchainWalker]: Walking toolchain with 5 elements.
[2024-11-03 01:46:00,616 INFO  L112        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2024-11-03 01:46:00,616 INFO  L270        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2024-11-03 01:46:00,622 INFO  L274        PluginConnector]: CACSL2BoogieTranslator initialized
[2024-11-03 01:46:00,622 INFO  L184        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 01:46:00" (1/1) ...
[2024-11-03 01:46:00,623 INFO  L204        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@60860076 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:46:00, skipping insertion in model container
[2024-11-03 01:46:00,624 INFO  L184        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 01:46:00" (1/1) ...
[2024-11-03 01:46:00,685 INFO  L175         MainTranslator]: Built tables and reachable declarations
[2024-11-03 01:46:00,863 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_amount500_file-79.i[916,929]
[2024-11-03 01:46:01,122 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2024-11-03 01:46:01,140 INFO  L200         MainTranslator]: Completed pre-run
[2024-11-03 01:46:01,153 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_amount500_file-79.i[916,929]
[2024-11-03 01:46:01,320 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2024-11-03 01:46:01,365 INFO  L204         MainTranslator]: Completed translation
[2024-11-03 01:46:01,365 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:46:01 WrapperNode
[2024-11-03 01:46:01,365 INFO  L131        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2024-11-03 01:46:01,367 INFO  L112        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2024-11-03 01:46:01,367 INFO  L270        PluginConnector]: Initializing Boogie Procedure Inliner...
[2024-11-03 01:46:01,367 INFO  L274        PluginConnector]: Boogie Procedure Inliner initialized
[2024-11-03 01:46:01,374 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:46:01" (1/1) ...
[2024-11-03 01:46:01,401 INFO  L184        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:46:01" (1/1) ...
[2024-11-03 01:46:01,462 INFO  L138                Inliner]: procedures = 27, calls = 75, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 543
[2024-11-03 01:46:01,463 INFO  L131        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2024-11-03 01:46:01,464 INFO  L112        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2024-11-03 01:46:01,464 INFO  L270        PluginConnector]: Initializing Boogie Preprocessor...
[2024-11-03 01:46:01,464 INFO  L274        PluginConnector]: Boogie Preprocessor initialized
[2024-11-03 01:46:01,480 INFO  L184        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:46:01" (1/1) ...
[2024-11-03 01:46:01,480 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:46:01" (1/1) ...
[2024-11-03 01:46:01,497 INFO  L184        PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:46:01" (1/1) ...
[2024-11-03 01:46:01,555 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 01:46:01,556 INFO  L184        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:46:01" (1/1) ...
[2024-11-03 01:46:01,556 INFO  L184        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:46:01" (1/1) ...
[2024-11-03 01:46:01,602 INFO  L184        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:46:01" (1/1) ...
[2024-11-03 01:46:01,608 INFO  L184        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:46:01" (1/1) ...
[2024-11-03 01:46:01,621 INFO  L184        PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:46:01" (1/1) ...
[2024-11-03 01:46:01,631 INFO  L184        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:46:01" (1/1) ...
[2024-11-03 01:46:01,643 INFO  L131        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2024-11-03 01:46:01,644 INFO  L112        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2024-11-03 01:46:01,645 INFO  L270        PluginConnector]: Initializing RCFGBuilder...
[2024-11-03 01:46:01,645 INFO  L274        PluginConnector]: RCFGBuilder initialized
[2024-11-03 01:46:01,646 INFO  L184        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:46:01" (1/1) ...
[2024-11-03 01:46:01,653 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2024-11-03 01:46:01,665 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2024-11-03 01:46:01,685 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 01:46:01,689 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 01:46:01,716 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2024-11-03 01:46:01,717 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0
[2024-11-03 01:46:01,717 INFO  L130     BoogieDeclarations]: Found specification of procedure assume_abort_if_not
[2024-11-03 01:46:01,717 INFO  L138     BoogieDeclarations]: Found implementation of procedure assume_abort_if_not
[2024-11-03 01:46:01,717 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2024-11-03 01:46:01,717 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2024-11-03 01:46:01,862 INFO  L238             CfgBuilder]: Building ICFG
[2024-11-03 01:46:01,864 INFO  L264             CfgBuilder]: Building CFG for each procedure with an implementation
[2024-11-03 01:46:37,335 INFO  L?                        ?]: Removed 70 outVars from TransFormulas that were not future-live.
[2024-11-03 01:46:37,336 INFO  L287             CfgBuilder]: Performing block encoding
[2024-11-03 01:46:37,364 INFO  L311             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2024-11-03 01:46:37,365 INFO  L316             CfgBuilder]: Removed 1 assume(true) statements.
[2024-11-03 01:46:37,365 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 01:46:37 BoogieIcfgContainer
[2024-11-03 01:46:37,365 INFO  L131        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2024-11-03 01:46:37,367 INFO  L112        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2024-11-03 01:46:37,367 INFO  L270        PluginConnector]: Initializing TraceAbstraction...
[2024-11-03 01:46:37,372 INFO  L274        PluginConnector]: TraceAbstraction initialized
[2024-11-03 01:46:37,372 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 01:46:00" (1/3) ...
[2024-11-03 01:46:37,373 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25c8d229 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 01:46:37, skipping insertion in model container
[2024-11-03 01:46:37,373 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:46:01" (2/3) ...
[2024-11-03 01:46:37,373 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25c8d229 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 01:46:37, skipping insertion in model container
[2024-11-03 01:46:37,374 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 01:46:37" (3/3) ...
[2024-11-03 01:46:37,376 INFO  L112   eAbstractionObserver]: Analyzing ICFG hardness_operatoramount_amount500_file-79.i
[2024-11-03 01:46:37,390 INFO  L214   ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2024-11-03 01:46:37,390 INFO  L154   ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2024-11-03 01:46:37,462 INFO  L332      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2024-11-03 01:46:37,468 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;@4fe2199d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2024-11-03 01:46:37,468 INFO  L334      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2024-11-03 01:46:37,475 INFO  L276                IsEmpty]: Start isEmpty. Operand  has 221 states, 156 states have (on average 1.5897435897435896) internal successors, (248), 157 states have internal predecessors, (248), 62 states have call successors, (62), 1 states have call predecessors, (62), 1 states have return successors, (62), 62 states have call predecessors, (62), 62 states have call successors, (62)
[2024-11-03 01:46:37,501 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 418
[2024-11-03 01:46:37,503 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-03 01:46:37,505 INFO  L215           NwaCegarLoop]: trace histogram [62, 62, 62, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:46:37,505 INFO  L396      AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-03 01:46:37,509 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-03 01:46:37,510 INFO  L85        PathProgramCache]: Analyzing trace with hash -2074723937, now seen corresponding path program 1 times
[2024-11-03 01:46:37,518 INFO  L118   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2024-11-03 01:46:37,519 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1533620249]
[2024-11-03 01:46:37,519 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-03 01:46:37,521 INFO  L173          SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt
[2024-11-03 01:46:37,522 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4
[2024-11-03 01:46:37,524 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 01:46:37,526 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 01:46:38,909 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-03 01:46:39,003 INFO  L255         TraceCheckSpWp]: Trace formula consists of 726 conjuncts, 1 conjuncts are in the unsatisfiable core
[2024-11-03 01:46:39,019 INFO  L278         TraceCheckSpWp]: Computing forward predicates...
[2024-11-03 01:46:39,125 INFO  L134       CoverageAnalysis]: Checked inductivity of 7564 backedges. 122 proven. 0 refuted. 0 times theorem prover too weak. 7442 trivial. 0 not checked.
[2024-11-03 01:46:39,125 INFO  L311         TraceCheckSpWp]: Computing backward predicates...
[2024-11-03 01:46:46,018 INFO  L134       CoverageAnalysis]: Checked inductivity of 7564 backedges. 122 proven. 0 refuted. 0 times theorem prover too weak. 7442 trivial. 0 not checked.
[2024-11-03 01:46:46,019 INFO  L136   FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2024-11-03 01:46:46,019 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1533620249]
[2024-11-03 01:46:46,019 INFO  L158   FreeRefinementEngine]: IpTcStrategyModulePreferences [1533620249] provided 2 perfect and 0 imperfect interpolant sequences
[2024-11-03 01:46:46,019 INFO  L185   FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences.
[2024-11-03 01:46:46,020 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2
[2024-11-03 01:46:46,021 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1968037540]
[2024-11-03 01:46:46,021 INFO  L85    oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton
[2024-11-03 01:46:46,028 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 2 states
[2024-11-03 01:46:46,028 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2024-11-03 01:46:46,047 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants.
[2024-11-03 01:46:46,048 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2024-11-03 01:46:46,050 INFO  L87              Difference]: Start difference. First operand  has 221 states, 156 states have (on average 1.5897435897435896) internal successors, (248), 157 states have internal predecessors, (248), 62 states have call successors, (62), 1 states have call predecessors, (62), 1 states have return successors, (62), 62 states have call predecessors, (62), 62 states have call successors, (62) Second operand  has 2 states, 2 states have (on average 56.0) internal successors, (112), 2 states have internal predecessors, (112), 1 states have call successors, (62), 1 states have call predecessors, (62), 2 states have return successors, (62), 2 states have call predecessors, (62), 1 states have call successors, (62)
[2024-11-03 01:46:46,097 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-03 01:46:46,097 INFO  L93              Difference]: Finished difference Result 435 states and 800 transitions.
[2024-11-03 01:46:46,099 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. 
[2024-11-03 01:46:46,101 INFO  L78                 Accepts]: Start accepts. Automaton has  has 2 states, 2 states have (on average 56.0) internal successors, (112), 2 states have internal predecessors, (112), 1 states have call successors, (62), 1 states have call predecessors, (62), 2 states have return successors, (62), 2 states have call predecessors, (62), 1 states have call successors, (62) Word has length 417
[2024-11-03 01:46:46,101 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-03 01:46:46,113 INFO  L225             Difference]: With dead ends: 435
[2024-11-03 01:46:46,113 INFO  L226             Difference]: Without dead ends: 217
[2024-11-03 01:46:46,124 INFO  L431           NwaCegarLoop]: 0 DeclaredPredicates, 832 GetRequests, 832 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 01:46:46,130 INFO  L432           NwaCegarLoop]: 365 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, 365 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 01:46:46,131 INFO  L433           NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 365 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2024-11-03 01:46:46,151 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 217 states.
[2024-11-03 01:46:46,209 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 217.
[2024-11-03 01:46:46,211 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 217 states, 153 states have (on average 1.5751633986928104) internal successors, (241), 153 states have internal predecessors, (241), 62 states have call successors, (62), 1 states have call predecessors, (62), 1 states have return successors, (62), 62 states have call predecessors, (62), 62 states have call successors, (62)
[2024-11-03 01:46:46,215 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 365 transitions.
[2024-11-03 01:46:46,222 INFO  L78                 Accepts]: Start accepts. Automaton has 217 states and 365 transitions. Word has length 417
[2024-11-03 01:46:46,223 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-03 01:46:46,223 INFO  L471      AbstractCegarLoop]: Abstraction has 217 states and 365 transitions.
[2024-11-03 01:46:46,223 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 2 states, 2 states have (on average 56.0) internal successors, (112), 2 states have internal predecessors, (112), 1 states have call successors, (62), 1 states have call predecessors, (62), 2 states have return successors, (62), 2 states have call predecessors, (62), 1 states have call successors, (62)
[2024-11-03 01:46:46,224 INFO  L276                IsEmpty]: Start isEmpty. Operand 217 states and 365 transitions.
[2024-11-03 01:46:46,238 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 418
[2024-11-03 01:46:46,238 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-03 01:46:46,238 INFO  L215           NwaCegarLoop]: trace histogram [62, 62, 62, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:46:46,261 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (2)] Ended with exit code 0
[2024-11-03 01:46:46,446 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 01:46:46,448 INFO  L396      AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-03 01:46:46,448 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-03 01:46:46,449 INFO  L85        PathProgramCache]: Analyzing trace with hash -91134549, now seen corresponding path program 1 times
[2024-11-03 01:46:46,449 INFO  L118   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2024-11-03 01:46:46,449 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1751288665]
[2024-11-03 01:46:46,449 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-03 01:46:46,450 INFO  L173          SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt
[2024-11-03 01:46:46,450 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4
[2024-11-03 01:46:46,454 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 01:46:46,455 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 01:46:47,969 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-03 01:46:48,085 INFO  L255         TraceCheckSpWp]: Trace formula consists of 726 conjuncts, 2 conjuncts are in the unsatisfiable core
[2024-11-03 01:46:48,095 INFO  L278         TraceCheckSpWp]: Computing forward predicates...
[2024-11-03 01:46:49,193 INFO  L134       CoverageAnalysis]: Checked inductivity of 7564 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7564 trivial. 0 not checked.
[2024-11-03 01:46:49,193 INFO  L311         TraceCheckSpWp]: Computing backward predicates...
[2024-11-03 01:46:57,224 INFO  L134       CoverageAnalysis]: Checked inductivity of 7564 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7564 trivial. 0 not checked.
[2024-11-03 01:46:57,225 INFO  L136   FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2024-11-03 01:46:57,225 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1751288665]
[2024-11-03 01:46:57,225 INFO  L158   FreeRefinementEngine]: IpTcStrategyModulePreferences [1751288665] provided 2 perfect and 0 imperfect interpolant sequences
[2024-11-03 01:46:57,225 INFO  L185   FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences.
[2024-11-03 01:46:57,226 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3
[2024-11-03 01:46:57,226 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1684421792]
[2024-11-03 01:46:57,226 INFO  L85    oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton
[2024-11-03 01:46:57,228 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2024-11-03 01:46:57,228 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2024-11-03 01:46:57,229 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2024-11-03 01:46:57,229 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2024-11-03 01:46:57,230 INFO  L87              Difference]: Start difference. First operand 217 states and 365 transitions. Second operand  has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 1 states have call successors, (62), 1 states have call predecessors, (62), 1 states have return successors, (62), 1 states have call predecessors, (62), 1 states have call successors, (62)
[2024-11-03 01:47:03,235 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.85s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers []
[2024-11-03 01:47:07,246 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers []
[2024-11-03 01:47:07,704 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-03 01:47:07,705 INFO  L93              Difference]: Finished difference Result 638 states and 1075 transitions.
[2024-11-03 01:47:07,706 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2024-11-03 01:47:07,707 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 1 states have call successors, (62), 1 states have call predecessors, (62), 1 states have return successors, (62), 1 states have call predecessors, (62), 1 states have call successors, (62) Word has length 417
[2024-11-03 01:47:07,709 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-03 01:47:07,714 INFO  L225             Difference]: With dead ends: 638
[2024-11-03 01:47:07,714 INFO  L226             Difference]: Without dead ends: 424
[2024-11-03 01:47:07,716 INFO  L431           NwaCegarLoop]: 0 DeclaredPredicates, 832 GetRequests, 831 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2024-11-03 01:47:07,717 INFO  L432           NwaCegarLoop]: 407 mSDtfsCounter, 332 mSDsluCounter, 327 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 19 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 332 SdHoareTripleChecker+Valid, 734 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.4s IncrementalHoareTripleChecker+Time
[2024-11-03 01:47:07,717 INFO  L433           NwaCegarLoop]: SdHoareTripleChecker [332 Valid, 734 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 27 Invalid, 2 Unknown, 0 Unchecked, 10.4s Time]
[2024-11-03 01:47:07,718 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 424 states.
[2024-11-03 01:47:07,786 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 424 to 422.
[2024-11-03 01:47:07,791 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 422 states, 295 states have (on average 1.5389830508474576) internal successors, (454), 295 states have internal predecessors, (454), 124 states have call successors, (124), 2 states have call predecessors, (124), 2 states have return successors, (124), 124 states have call predecessors, (124), 124 states have call successors, (124)
[2024-11-03 01:47:07,796 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 422 states to 422 states and 702 transitions.
[2024-11-03 01:47:07,797 INFO  L78                 Accepts]: Start accepts. Automaton has 422 states and 702 transitions. Word has length 417
[2024-11-03 01:47:07,798 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-03 01:47:07,799 INFO  L471      AbstractCegarLoop]: Abstraction has 422 states and 702 transitions.
[2024-11-03 01:47:07,802 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 1 states have call successors, (62), 1 states have call predecessors, (62), 1 states have return successors, (62), 1 states have call predecessors, (62), 1 states have call successors, (62)
[2024-11-03 01:47:07,802 INFO  L276                IsEmpty]: Start isEmpty. Operand 422 states and 702 transitions.
[2024-11-03 01:47:07,808 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 418
[2024-11-03 01:47:07,808 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-03 01:47:07,809 INFO  L215           NwaCegarLoop]: trace histogram [62, 62, 62, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:47:07,827 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 01:47:08,009 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 01:47:08,010 INFO  L396      AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-03 01:47:08,010 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-03 01:47:08,011 INFO  L85        PathProgramCache]: Analyzing trace with hash 1703976175, now seen corresponding path program 1 times
[2024-11-03 01:47:08,011 INFO  L118   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2024-11-03 01:47:08,011 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [521936915]
[2024-11-03 01:47:08,011 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-03 01:47:08,011 INFO  L173          SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt
[2024-11-03 01:47:08,012 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4
[2024-11-03 01:47:08,014 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 01:47:08,015 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 01:47:09,468 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-03 01:47:09,608 INFO  L255         TraceCheckSpWp]: Trace formula consists of 726 conjuncts, 2 conjuncts are in the unsatisfiable core
[2024-11-03 01:47:09,615 INFO  L278         TraceCheckSpWp]: Computing forward predicates...
[2024-11-03 01:47:10,919 INFO  L134       CoverageAnalysis]: Checked inductivity of 7564 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7564 trivial. 0 not checked.
[2024-11-03 01:47:10,920 INFO  L311         TraceCheckSpWp]: Computing backward predicates...
[2024-11-03 01:47:19,564 INFO  L134       CoverageAnalysis]: Checked inductivity of 7564 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7564 trivial. 0 not checked.
[2024-11-03 01:47:19,565 INFO  L136   FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2024-11-03 01:47:19,568 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [521936915]
[2024-11-03 01:47:19,568 INFO  L158   FreeRefinementEngine]: IpTcStrategyModulePreferences [521936915] provided 2 perfect and 0 imperfect interpolant sequences
[2024-11-03 01:47:19,568 INFO  L185   FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences.
[2024-11-03 01:47:19,568 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3
[2024-11-03 01:47:19,569 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [557173818]
[2024-11-03 01:47:19,569 INFO  L85    oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton
[2024-11-03 01:47:19,570 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2024-11-03 01:47:19,570 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2024-11-03 01:47:19,571 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2024-11-03 01:47:19,571 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2024-11-03 01:47:19,572 INFO  L87              Difference]: Start difference. First operand 422 states and 702 transitions. Second operand  has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 1 states have call successors, (62), 1 states have call predecessors, (62), 1 states have return successors, (62), 1 states have call predecessors, (62), 1 states have call successors, (62)
[2024-11-03 01:47:21,418 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.83s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers []
[2024-11-03 01:47:24,215 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.43s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers []
[2024-11-03 01:47:25,886 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.22s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers []
[2024-11-03 01:47:31,104 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.85s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers []
[2024-11-03 01:47:35,124 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers []
[2024-11-03 01:47:35,553 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-03 01:47:35,554 INFO  L93              Difference]: Finished difference Result 1252 states and 2084 transitions.
[2024-11-03 01:47:35,555 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2024-11-03 01:47:35,555 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 1 states have call successors, (62), 1 states have call predecessors, (62), 1 states have return successors, (62), 1 states have call predecessors, (62), 1 states have call successors, (62) Word has length 417
[2024-11-03 01:47:35,557 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-03 01:47:35,563 INFO  L225             Difference]: With dead ends: 1252
[2024-11-03 01:47:35,563 INFO  L226             Difference]: Without dead ends: 833
[2024-11-03 01:47:35,565 INFO  L431           NwaCegarLoop]: 0 DeclaredPredicates, 832 GetRequests, 831 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2024-11-03 01:47:35,566 INFO  L432           NwaCegarLoop]: 382 mSDtfsCounter, 333 mSDsluCounter, 335 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 18 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 333 SdHoareTripleChecker+Valid, 717 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.9s IncrementalHoareTripleChecker+Time
[2024-11-03 01:47:35,567 INFO  L433           NwaCegarLoop]: SdHoareTripleChecker [333 Valid, 717 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 26 Invalid, 2 Unknown, 0 Unchecked, 15.9s Time]
[2024-11-03 01:47:35,569 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 833 states.
[2024-11-03 01:47:35,624 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 833 to 555.
[2024-11-03 01:47:35,626 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 555 states, 428 states have (on average 1.5677570093457944) internal successors, (671), 428 states have internal predecessors, (671), 124 states have call successors, (124), 2 states have call predecessors, (124), 2 states have return successors, (124), 124 states have call predecessors, (124), 124 states have call successors, (124)
[2024-11-03 01:47:35,629 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 555 states to 555 states and 919 transitions.
[2024-11-03 01:47:35,630 INFO  L78                 Accepts]: Start accepts. Automaton has 555 states and 919 transitions. Word has length 417
[2024-11-03 01:47:35,633 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-03 01:47:35,633 INFO  L471      AbstractCegarLoop]: Abstraction has 555 states and 919 transitions.
[2024-11-03 01:47:35,633 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 1 states have call successors, (62), 1 states have call predecessors, (62), 1 states have return successors, (62), 1 states have call predecessors, (62), 1 states have call successors, (62)
[2024-11-03 01:47:35,633 INFO  L276                IsEmpty]: Start isEmpty. Operand 555 states and 919 transitions.
[2024-11-03 01:47:35,640 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 419
[2024-11-03 01:47:35,640 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-03 01:47:35,640 INFO  L215           NwaCegarLoop]: trace histogram [62, 62, 62, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:47:35,657 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 01:47:35,841 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 01:47:35,842 INFO  L396      AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-03 01:47:35,842 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-03 01:47:35,843 INFO  L85        PathProgramCache]: Analyzing trace with hash 261223305, now seen corresponding path program 1 times
[2024-11-03 01:47:35,843 INFO  L118   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2024-11-03 01:47:35,843 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [351116698]
[2024-11-03 01:47:35,843 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-03 01:47:35,843 INFO  L173          SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt
[2024-11-03 01:47:35,844 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4
[2024-11-03 01:47:35,845 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 01:47:35,846 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 01:47:37,347 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-03 01:47:37,477 INFO  L255         TraceCheckSpWp]: Trace formula consists of 729 conjuncts, 2 conjuncts are in the unsatisfiable core
[2024-11-03 01:47:37,485 INFO  L278         TraceCheckSpWp]: Computing forward predicates...
[2024-11-03 01:47:37,844 INFO  L134       CoverageAnalysis]: Checked inductivity of 7564 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7564 trivial. 0 not checked.
[2024-11-03 01:47:37,844 INFO  L311         TraceCheckSpWp]: Computing backward predicates...