/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_amount25_file-31.i


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


This is Ultimate 0.2.5-dev-b75d321-m
[2024-11-03 01:26:59,930 INFO  L188        SettingsManager]: Resetting all preferences to default values...
[2024-11-03 01:26:59,986 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 01:26:59,991 WARN  L101        SettingsManager]: Preference file contains the following unknown settings:
[2024-11-03 01:26:59,991 WARN  L103        SettingsManager]:   * de.uni_freiburg.informatik.ultimate.core.Log level for class
[2024-11-03 01:27:00,013 INFO  L130        SettingsManager]: Preferences different from defaults after loading the file:
[2024-11-03 01:27:00,014 INFO  L151        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2024-11-03 01:27:00,015 INFO  L153        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2024-11-03 01:27:00,015 INFO  L151        SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults:
[2024-11-03 01:27:00,018 INFO  L153        SettingsManager]:  * Use memory slicer=true
[2024-11-03 01:27:00,018 INFO  L151        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2024-11-03 01:27:00,019 INFO  L153        SettingsManager]:  * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2024-11-03 01:27:00,019 INFO  L151        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2024-11-03 01:27:00,019 INFO  L153        SettingsManager]:  * Create parallel compositions if possible=false
[2024-11-03 01:27:00,019 INFO  L153        SettingsManager]:  * Use SBE=true
[2024-11-03 01:27:00,020 INFO  L151        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2024-11-03 01:27:00,020 INFO  L153        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2024-11-03 01:27:00,021 INFO  L153        SettingsManager]:  * sizeof long=4
[2024-11-03 01:27:00,021 INFO  L153        SettingsManager]:  * sizeof POINTER=4
[2024-11-03 01:27:00,021 INFO  L153        SettingsManager]:  * Check division by zero=IGNORE
[2024-11-03 01:27:00,022 INFO  L153        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2024-11-03 01:27:00,022 INFO  L153        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2024-11-03 01:27:00,022 INFO  L153        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2024-11-03 01:27:00,022 INFO  L153        SettingsManager]:  * Adapt memory model on pointer casts if necessary=true
[2024-11-03 01:27:00,022 INFO  L153        SettingsManager]:  * Use bitvectors instead of ints=true
[2024-11-03 01:27:00,023 INFO  L153        SettingsManager]:  * Allow undefined functions=false
[2024-11-03 01:27:00,023 INFO  L153        SettingsManager]:  * Memory model=HoenickeLindenmann_4ByteResolution
[2024-11-03 01:27:00,023 INFO  L153        SettingsManager]:  * sizeof long double=12
[2024-11-03 01:27:00,023 INFO  L153        SettingsManager]:  * Check if freed pointer was valid=false
[2024-11-03 01:27:00,023 INFO  L153        SettingsManager]:  * Use constant arrays=true
[2024-11-03 01:27:00,023 INFO  L151        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2024-11-03 01:27:00,024 INFO  L153        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2024-11-03 01:27:00,024 INFO  L153        SettingsManager]:  * Only consider context switches at boundaries of atomic blocks=true
[2024-11-03 01:27:00,024 INFO  L153        SettingsManager]:  * SMT solver=External_DefaultMode
[2024-11-03 01:27:00,024 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2024-11-03 01:27:00,024 INFO  L151        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2024-11-03 01:27:00,025 INFO  L153        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2024-11-03 01:27:00,025 INFO  L153        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopHeads
[2024-11-03 01:27:00,025 INFO  L153        SettingsManager]:  * Trace refinement strategy=WOLF
[2024-11-03 01:27:00,027 INFO  L153        SettingsManager]:  * Command for external solver=cvc4 --incremental --print-success --lang smt
[2024-11-03 01:27:00,027 INFO  L153        SettingsManager]:  * Apply one-shot large block encoding in concurrent analysis=false
[2024-11-03 01:27:00,027 INFO  L153        SettingsManager]:  * Automaton type used in concurrency analysis=PETRI_NET
[2024-11-03 01:27:00,027 INFO  L153        SettingsManager]:  * Order on configurations for Petri net unfoldings=DBO
[2024-11-03 01:27:00,027 INFO  L153        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2024-11-03 01:27:00,028 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$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Allow undefined functions -> true
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> External_ModelsAndUnsatCoreMode
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Command for external solver -> cvc4 --incremental --print-success --lang smt
[2024-11-03 01:27:00,209 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2024-11-03 01:27:00,228 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2024-11-03 01:27:00,231 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2024-11-03 01:27:00,232 INFO  L270        PluginConnector]: Initializing CDTParser...
[2024-11-03 01:27:00,232 INFO  L274        PluginConnector]: CDTParser initialized
[2024-11-03 01:27:00,233 INFO  L431   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount25_file-31.i
[2024-11-03 01:27:01,494 INFO  L533              CDTParser]: Created temporary CDT project at NULL
[2024-11-03 01:27:01,676 INFO  L384              CDTParser]: Found 1 translation units.
[2024-11-03 01:27:01,676 INFO  L180              CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount25_file-31.i
[2024-11-03 01:27:01,682 INFO  L427              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7fe4280ad/179183732dbe447aad4918550240972d/FLAGd3f04d699
[2024-11-03 01:27:01,692 INFO  L435              CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7fe4280ad/179183732dbe447aad4918550240972d
[2024-11-03 01:27:01,694 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2024-11-03 01:27:01,695 INFO  L133        ToolchainWalker]: Walking toolchain with 5 elements.
[2024-11-03 01:27:01,696 INFO  L112        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2024-11-03 01:27:01,696 INFO  L270        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2024-11-03 01:27:01,700 INFO  L274        PluginConnector]: CACSL2BoogieTranslator initialized
[2024-11-03 01:27:01,700 INFO  L184        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 01:27:01" (1/1) ...
[2024-11-03 01:27:01,701 INFO  L204        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@75ca443e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:27:01, skipping insertion in model container
[2024-11-03 01:27:01,701 INFO  L184        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 01:27:01" (1/1) ...
[2024-11-03 01:27:01,718 INFO  L175         MainTranslator]: Built tables and reachable declarations
[2024-11-03 01:27:01,844 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_amount25_file-31.i[915,928]
[2024-11-03 01:27:01,877 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2024-11-03 01:27:01,905 INFO  L200         MainTranslator]: Completed pre-run
[2024-11-03 01:27:01,916 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_amount25_file-31.i[915,928]
[2024-11-03 01:27:01,943 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2024-11-03 01:27:01,970 INFO  L204         MainTranslator]: Completed translation
[2024-11-03 01:27:01,970 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:27:01 WrapperNode
[2024-11-03 01:27:01,970 INFO  L131        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2024-11-03 01:27:01,971 INFO  L112        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2024-11-03 01:27:01,971 INFO  L270        PluginConnector]: Initializing Boogie Procedure Inliner...
[2024-11-03 01:27:01,971 INFO  L274        PluginConnector]: Boogie Procedure Inliner initialized
[2024-11-03 01:27:01,980 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:27:01" (1/1) ...
[2024-11-03 01:27:01,989 INFO  L184        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:27:01" (1/1) ...
[2024-11-03 01:27:02,013 INFO  L138                Inliner]: procedures = 27, calls = 24, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 94
[2024-11-03 01:27:02,013 INFO  L131        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2024-11-03 01:27:02,014 INFO  L112        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2024-11-03 01:27:02,014 INFO  L270        PluginConnector]: Initializing Boogie Preprocessor...
[2024-11-03 01:27:02,014 INFO  L274        PluginConnector]: Boogie Preprocessor initialized
[2024-11-03 01:27:02,022 INFO  L184        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:27:01" (1/1) ...
[2024-11-03 01:27:02,022 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:27:01" (1/1) ...
[2024-11-03 01:27:02,025 INFO  L184        PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:27:01" (1/1) ...
[2024-11-03 01:27:02,034 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 01:27:02,034 INFO  L184        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:27:01" (1/1) ...
[2024-11-03 01:27:02,034 INFO  L184        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:27:01" (1/1) ...
[2024-11-03 01:27:02,039 INFO  L184        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:27:01" (1/1) ...
[2024-11-03 01:27:02,041 INFO  L184        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:27:01" (1/1) ...
[2024-11-03 01:27:02,043 INFO  L184        PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:27:01" (1/1) ...
[2024-11-03 01:27:02,044 INFO  L184        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:27:01" (1/1) ...
[2024-11-03 01:27:02,046 INFO  L131        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2024-11-03 01:27:02,047 INFO  L112        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2024-11-03 01:27:02,047 INFO  L270        PluginConnector]: Initializing RCFGBuilder...
[2024-11-03 01:27:02,047 INFO  L274        PluginConnector]: RCFGBuilder initialized
[2024-11-03 01:27:02,047 INFO  L184        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:27:01" (1/1) ...
[2024-11-03 01:27:02,055 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2024-11-03 01:27:02,068 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2024-11-03 01:27:02,088 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 01:27:02,101 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 01:27:02,122 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2024-11-03 01:27:02,122 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0
[2024-11-03 01:27:02,122 INFO  L130     BoogieDeclarations]: Found specification of procedure assume_abort_if_not
[2024-11-03 01:27:02,122 INFO  L138     BoogieDeclarations]: Found implementation of procedure assume_abort_if_not
[2024-11-03 01:27:02,122 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2024-11-03 01:27:02,122 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2024-11-03 01:27:02,198 INFO  L238             CfgBuilder]: Building ICFG
[2024-11-03 01:27:02,200 INFO  L264             CfgBuilder]: Building CFG for each procedure with an implementation
[2024-11-03 01:27:02,426 INFO  L?                        ?]: Removed 14 outVars from TransFormulas that were not future-live.
[2024-11-03 01:27:02,426 INFO  L287             CfgBuilder]: Performing block encoding
[2024-11-03 01:27:02,437 INFO  L311             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2024-11-03 01:27:02,438 INFO  L316             CfgBuilder]: Removed 1 assume(true) statements.
[2024-11-03 01:27:02,438 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 01:27:02 BoogieIcfgContainer
[2024-11-03 01:27:02,438 INFO  L131        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2024-11-03 01:27:02,444 INFO  L112        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2024-11-03 01:27:02,444 INFO  L270        PluginConnector]: Initializing TraceAbstraction...
[2024-11-03 01:27:02,448 INFO  L274        PluginConnector]: TraceAbstraction initialized
[2024-11-03 01:27:02,448 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 01:27:01" (1/3) ...
[2024-11-03 01:27:02,449 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@737c7cbf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 01:27:02, skipping insertion in model container
[2024-11-03 01:27:02,449 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:27:01" (2/3) ...
[2024-11-03 01:27:02,450 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@737c7cbf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 01:27:02, skipping insertion in model container
[2024-11-03 01:27:02,450 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 01:27:02" (3/3) ...
[2024-11-03 01:27:02,451 INFO  L112   eAbstractionObserver]: Analyzing ICFG hardness_operatoramount_amount25_file-31.i
[2024-11-03 01:27:02,465 INFO  L214   ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2024-11-03 01:27:02,466 INFO  L154   ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2024-11-03 01:27:02,520 INFO  L332      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2024-11-03 01:27:02,526 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;@576a7d56, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2024-11-03 01:27:02,530 INFO  L334      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2024-11-03 01:27:02,534 INFO  L276                IsEmpty]: Start isEmpty. Operand  has 43 states, 29 states have (on average 1.3448275862068966) internal successors, (39), 30 states have internal predecessors, (39), 11 states have call successors, (11), 1 states have call predecessors, (11), 1 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11)
[2024-11-03 01:27:02,541 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 76
[2024-11-03 01:27:02,542 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-03 01:27:02,542 INFO  L215           NwaCegarLoop]: trace histogram [11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:27:02,543 INFO  L396      AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-03 01:27:02,546 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-03 01:27:02,547 INFO  L85        PathProgramCache]: Analyzing trace with hash 1095913414, now seen corresponding path program 1 times
[2024-11-03 01:27:02,553 INFO  L118   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2024-11-03 01:27:02,553 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1076241535]
[2024-11-03 01:27:02,554 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-03 01:27:02,555 INFO  L173          SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt
[2024-11-03 01:27:02,555 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4
[2024-11-03 01:27:02,557 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 01:27:02,559 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 01:27:02,727 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-03 01:27:02,730 INFO  L255         TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 1 conjuncts are in the unsatisfiable core
[2024-11-03 01:27:02,736 INFO  L278         TraceCheckSpWp]: Computing forward predicates...
[2024-11-03 01:27:02,760 INFO  L134       CoverageAnalysis]: Checked inductivity of 220 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 200 trivial. 0 not checked.
[2024-11-03 01:27:02,760 INFO  L311         TraceCheckSpWp]: Computing backward predicates...
[2024-11-03 01:27:02,828 INFO  L134       CoverageAnalysis]: Checked inductivity of 220 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 200 trivial. 0 not checked.
[2024-11-03 01:27:02,829 INFO  L136   FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2024-11-03 01:27:02,829 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1076241535]
[2024-11-03 01:27:02,830 INFO  L158   FreeRefinementEngine]: IpTcStrategyModulePreferences [1076241535] provided 2 perfect and 0 imperfect interpolant sequences
[2024-11-03 01:27:02,830 INFO  L185   FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences.
[2024-11-03 01:27:02,830 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2
[2024-11-03 01:27:02,836 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [585844332]
[2024-11-03 01:27:02,836 INFO  L85    oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton
[2024-11-03 01:27:02,841 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 2 states
[2024-11-03 01:27:02,841 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2024-11-03 01:27:02,861 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants.
[2024-11-03 01:27:02,862 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2024-11-03 01:27:02,864 INFO  L87              Difference]: Start difference. First operand  has 43 states, 29 states have (on average 1.3448275862068966) internal successors, (39), 30 states have internal predecessors, (39), 11 states have call successors, (11), 1 states have call predecessors, (11), 1 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) Second operand  has 2 states, 2 states have (on average 12.5) internal successors, (25), 2 states have internal predecessors, (25), 1 states have call successors, (11), 1 states have call predecessors, (11), 2 states have return successors, (11), 2 states have call predecessors, (11), 1 states have call successors, (11)
[2024-11-03 01:27:02,883 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-03 01:27:02,883 INFO  L93              Difference]: Finished difference Result 79 states and 127 transitions.
[2024-11-03 01:27:02,884 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. 
[2024-11-03 01:27:02,885 INFO  L78                 Accepts]: Start accepts. Automaton has  has 2 states, 2 states have (on average 12.5) internal successors, (25), 2 states have internal predecessors, (25), 1 states have call successors, (11), 1 states have call predecessors, (11), 2 states have return successors, (11), 2 states have call predecessors, (11), 1 states have call successors, (11) Word has length 75
[2024-11-03 01:27:02,886 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-03 01:27:02,898 INFO  L225             Difference]: With dead ends: 79
[2024-11-03 01:27:02,899 INFO  L226             Difference]: Without dead ends: 39
[2024-11-03 01:27:02,901 INFO  L431           NwaCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 148 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 01:27:02,906 INFO  L432           NwaCegarLoop]: 54 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, 54 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 01:27:02,907 INFO  L433           NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2024-11-03 01:27:02,935 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 39 states.
[2024-11-03 01:27:02,948 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39.
[2024-11-03 01:27:02,949 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 39 states, 26 states have (on average 1.2307692307692308) internal successors, (32), 26 states have internal predecessors, (32), 11 states have call successors, (11), 1 states have call predecessors, (11), 1 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11)
[2024-11-03 01:27:02,950 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 54 transitions.
[2024-11-03 01:27:02,952 INFO  L78                 Accepts]: Start accepts. Automaton has 39 states and 54 transitions. Word has length 75
[2024-11-03 01:27:02,952 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-03 01:27:02,952 INFO  L471      AbstractCegarLoop]: Abstraction has 39 states and 54 transitions.
[2024-11-03 01:27:02,952 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 2 states, 2 states have (on average 12.5) internal successors, (25), 2 states have internal predecessors, (25), 1 states have call successors, (11), 1 states have call predecessors, (11), 2 states have return successors, (11), 2 states have call predecessors, (11), 1 states have call successors, (11)
[2024-11-03 01:27:02,952 INFO  L276                IsEmpty]: Start isEmpty. Operand 39 states and 54 transitions.
[2024-11-03 01:27:02,954 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 76
[2024-11-03 01:27:02,954 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-03 01:27:02,955 INFO  L215           NwaCegarLoop]: trace histogram [11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:27:02,960 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 01:27:03,155 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 01:27:03,156 INFO  L396      AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-03 01:27:03,156 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-03 01:27:03,157 INFO  L85        PathProgramCache]: Analyzing trace with hash -742470136, now seen corresponding path program 1 times
[2024-11-03 01:27:03,157 INFO  L118   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2024-11-03 01:27:03,157 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1735998208]
[2024-11-03 01:27:03,157 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-03 01:27:03,157 INFO  L173          SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt
[2024-11-03 01:27:03,157 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4
[2024-11-03 01:27:03,160 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 01:27:03,161 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 01:27:03,412 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-03 01:27:03,419 INFO  L255         TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 8 conjuncts are in the unsatisfiable core
[2024-11-03 01:27:03,426 INFO  L278         TraceCheckSpWp]: Computing forward predicates...
[2024-11-03 01:27:04,103 INFO  L134       CoverageAnalysis]: Checked inductivity of 220 backedges. 78 proven. 24 refuted. 0 times theorem prover too weak. 118 trivial. 0 not checked.
[2024-11-03 01:27:04,103 INFO  L311         TraceCheckSpWp]: Computing backward predicates...
[2024-11-03 01:27:08,035 INFO  L134       CoverageAnalysis]: Checked inductivity of 220 backedges. 6 proven. 24 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked.
[2024-11-03 01:27:08,035 INFO  L136   FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2024-11-03 01:27:08,036 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1735998208]
[2024-11-03 01:27:08,036 INFO  L158   FreeRefinementEngine]: IpTcStrategyModulePreferences [1735998208] provided 0 perfect and 2 imperfect interpolant sequences
[2024-11-03 01:27:08,036 INFO  L185   FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2024-11-03 01:27:08,036 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 14
[2024-11-03 01:27:08,036 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1756021444]
[2024-11-03 01:27:08,036 INFO  L85    oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2024-11-03 01:27:08,038 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 14 states
[2024-11-03 01:27:08,039 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2024-11-03 01:27:08,040 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants.
[2024-11-03 01:27:08,040 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=128, Unknown=0, NotChecked=0, Total=182
[2024-11-03 01:27:08,040 INFO  L87              Difference]: Start difference. First operand 39 states and 54 transitions. Second operand  has 14 states, 14 states have (on average 3.5) internal successors, (49), 14 states have internal predecessors, (49), 4 states have call successors, (22), 3 states have call predecessors, (22), 5 states have return successors, (22), 4 states have call predecessors, (22), 4 states have call successors, (22)
[2024-11-03 01:27:26,118 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-03 01:27:26,119 INFO  L93              Difference]: Finished difference Result 206 states and 277 transitions.
[2024-11-03 01:27:26,127 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. 
[2024-11-03 01:27:26,128 INFO  L78                 Accepts]: Start accepts. Automaton has  has 14 states, 14 states have (on average 3.5) internal successors, (49), 14 states have internal predecessors, (49), 4 states have call successors, (22), 3 states have call predecessors, (22), 5 states have return successors, (22), 4 states have call predecessors, (22), 4 states have call successors, (22) Word has length 75
[2024-11-03 01:27:26,128 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-03 01:27:26,130 INFO  L225             Difference]: With dead ends: 206
[2024-11-03 01:27:26,130 INFO  L226             Difference]: Without dead ends: 170
[2024-11-03 01:27:26,131 INFO  L431           NwaCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 139 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 273 ImplicationChecksByTransitivity, 9.7s TimeCoverageRelationStatistics Valid=307, Invalid=685, Unknown=0, NotChecked=0, Total=992
[2024-11-03 01:27:26,134 INFO  L432           NwaCegarLoop]: 33 mSDtfsCounter, 222 mSDsluCounter, 208 mSDsCounter, 0 mSdLazyCounter, 375 mSolverCounterSat, 105 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 232 SdHoareTripleChecker+Valid, 241 SdHoareTripleChecker+Invalid, 480 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 105 IncrementalHoareTripleChecker+Valid, 375 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.9s IncrementalHoareTripleChecker+Time
[2024-11-03 01:27:26,134 INFO  L433           NwaCegarLoop]: SdHoareTripleChecker [232 Valid, 241 Invalid, 480 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [105 Valid, 375 Invalid, 0 Unknown, 0 Unchecked, 10.9s Time]
[2024-11-03 01:27:26,135 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 170 states.
[2024-11-03 01:27:26,168 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 122.
[2024-11-03 01:27:26,169 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 122 states, 81 states have (on average 1.1975308641975309) internal successors, (97), 82 states have internal predecessors, (97), 35 states have call successors, (35), 5 states have call predecessors, (35), 5 states have return successors, (35), 34 states have call predecessors, (35), 35 states have call successors, (35)
[2024-11-03 01:27:26,170 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 167 transitions.
[2024-11-03 01:27:26,171 INFO  L78                 Accepts]: Start accepts. Automaton has 122 states and 167 transitions. Word has length 75
[2024-11-03 01:27:26,171 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-03 01:27:26,171 INFO  L471      AbstractCegarLoop]: Abstraction has 122 states and 167 transitions.
[2024-11-03 01:27:26,171 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 14 states, 14 states have (on average 3.5) internal successors, (49), 14 states have internal predecessors, (49), 4 states have call successors, (22), 3 states have call predecessors, (22), 5 states have return successors, (22), 4 states have call predecessors, (22), 4 states have call successors, (22)
[2024-11-03 01:27:26,171 INFO  L276                IsEmpty]: Start isEmpty. Operand 122 states and 167 transitions.
[2024-11-03 01:27:26,172 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 76
[2024-11-03 01:27:26,173 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-03 01:27:26,176 INFO  L215           NwaCegarLoop]: trace histogram [11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:27:26,182 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (3)] Forceful destruction successful, exit code 0
[2024-11-03 01:27:26,376 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 01:27:26,376 INFO  L396      AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-03 01:27:26,377 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-03 01:27:26,377 INFO  L85        PathProgramCache]: Analyzing trace with hash 1032537226, now seen corresponding path program 1 times
[2024-11-03 01:27:26,377 INFO  L118   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2024-11-03 01:27:26,377 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1267937933]
[2024-11-03 01:27:26,377 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-03 01:27:26,377 INFO  L173          SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt
[2024-11-03 01:27:26,378 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4
[2024-11-03 01:27:26,380 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 01:27:26,381 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 01:27:26,649 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-03 01:27:26,653 INFO  L255         TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 26 conjuncts are in the unsatisfiable core
[2024-11-03 01:27:26,661 INFO  L278         TraceCheckSpWp]: Computing forward predicates...
[2024-11-03 01:27:41,164 INFO  L134       CoverageAnalysis]: Checked inductivity of 220 backedges. 102 proven. 21 refuted. 0 times theorem prover too weak. 97 trivial. 0 not checked.
[2024-11-03 01:27:41,164 INFO  L311         TraceCheckSpWp]: Computing backward predicates...
[2024-11-03 01:28:24,607 INFO  L134       CoverageAnalysis]: Checked inductivity of 220 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked.
[2024-11-03 01:28:24,608 INFO  L136   FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2024-11-03 01:28:24,608 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1267937933]
[2024-11-03 01:28:24,608 INFO  L158   FreeRefinementEngine]: IpTcStrategyModulePreferences [1267937933] provided 1 perfect and 1 imperfect interpolant sequences
[2024-11-03 01:28:24,608 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2024-11-03 01:28:24,608 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [16] total 28
[2024-11-03 01:28:24,608 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1776970400]
[2024-11-03 01:28:24,608 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-03 01:28:24,609 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 13 states
[2024-11-03 01:28:24,609 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2024-11-03 01:28:24,609 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants.
[2024-11-03 01:28:24,610 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=153, Invalid=603, Unknown=0, NotChecked=0, Total=756
[2024-11-03 01:28:24,610 INFO  L87              Difference]: Start difference. First operand 122 states and 167 transitions. Second operand  has 13 states, 13 states have (on average 2.0) internal successors, (26), 12 states have internal predecessors, (26), 1 states have call successors, (11), 1 states have call predecessors, (11), 2 states have return successors, (11), 2 states have call predecessors, (11), 1 states have call successors, (11)
[2024-11-03 01:28:34,762 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-03 01:28:34,762 INFO  L93              Difference]: Finished difference Result 166 states and 213 transitions.
[2024-11-03 01:28:34,771 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. 
[2024-11-03 01:28:34,772 INFO  L78                 Accepts]: Start accepts. Automaton has  has 13 states, 13 states have (on average 2.0) internal successors, (26), 12 states have internal predecessors, (26), 1 states have call successors, (11), 1 states have call predecessors, (11), 2 states have return successors, (11), 2 states have call predecessors, (11), 1 states have call successors, (11) Word has length 75
[2024-11-03 01:28:34,772 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-03 01:28:34,774 INFO  L225             Difference]: With dead ends: 166
[2024-11-03 01:28:34,774 INFO  L226             Difference]: Without dead ends: 164
[2024-11-03 01:28:34,778 INFO  L431           NwaCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 324 ImplicationChecksByTransitivity, 18.8s TimeCoverageRelationStatistics Valid=261, Invalid=999, Unknown=0, NotChecked=0, Total=1260
[2024-11-03 01:28:34,779 INFO  L432           NwaCegarLoop]: 37 mSDtfsCounter, 150 mSDsluCounter, 170 mSDsCounter, 0 mSdLazyCounter, 234 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 150 SdHoareTripleChecker+Valid, 207 SdHoareTripleChecker+Invalid, 260 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 234 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time
[2024-11-03 01:28:34,780 INFO  L433           NwaCegarLoop]: SdHoareTripleChecker [150 Valid, 207 Invalid, 260 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 234 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time]
[2024-11-03 01:28:34,780 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 164 states.
[2024-11-03 01:28:34,798 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 125.
[2024-11-03 01:28:34,798 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 125 states, 83 states have (on average 1.180722891566265) internal successors, (98), 85 states have internal predecessors, (98), 35 states have call successors, (35), 6 states have call predecessors, (35), 6 states have return successors, (35), 33 states have call predecessors, (35), 35 states have call successors, (35)
[2024-11-03 01:28:34,799 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 168 transitions.
[2024-11-03 01:28:34,800 INFO  L78                 Accepts]: Start accepts. Automaton has 125 states and 168 transitions. Word has length 75
[2024-11-03 01:28:34,800 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-03 01:28:34,800 INFO  L471      AbstractCegarLoop]: Abstraction has 125 states and 168 transitions.
[2024-11-03 01:28:34,800 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 13 states, 13 states have (on average 2.0) internal successors, (26), 12 states have internal predecessors, (26), 1 states have call successors, (11), 1 states have call predecessors, (11), 2 states have return successors, (11), 2 states have call predecessors, (11), 1 states have call successors, (11)
[2024-11-03 01:28:34,800 INFO  L276                IsEmpty]: Start isEmpty. Operand 125 states and 168 transitions.
[2024-11-03 01:28:34,801 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 77
[2024-11-03 01:28:34,801 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-03 01:28:34,801 INFO  L215           NwaCegarLoop]: trace histogram [11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:28:34,810 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (4)] Ended with exit code 0
[2024-11-03 01:28:35,001 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 01:28:35,002 INFO  L396      AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-03 01:28:35,002 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-03 01:28:35,002 INFO  L85        PathProgramCache]: Analyzing trace with hash 1997384696, now seen corresponding path program 1 times
[2024-11-03 01:28:35,002 INFO  L118   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2024-11-03 01:28:35,003 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [370945021]
[2024-11-03 01:28:35,003 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-03 01:28:35,003 INFO  L173          SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt
[2024-11-03 01:28:35,003 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4
[2024-11-03 01:28:35,005 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 01:28:35,006 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 01:28:35,212 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-03 01:28:35,217 INFO  L255         TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 28 conjuncts are in the unsatisfiable core
[2024-11-03 01:28:35,222 INFO  L278         TraceCheckSpWp]: Computing forward predicates...