/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_floatingpointinfluence_has-floats_file-33.i


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


This is Ultimate 0.2.5-dev-b75d321-m
[2024-11-03 00:31:55,859 INFO  L188        SettingsManager]: Resetting all preferences to default values...
[2024-11-03 00:31:55,933 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 00:31:55,941 WARN  L101        SettingsManager]: Preference file contains the following unknown settings:
[2024-11-03 00:31:55,942 WARN  L103        SettingsManager]:   * de.uni_freiburg.informatik.ultimate.core.Log level for class
[2024-11-03 00:31:55,970 INFO  L130        SettingsManager]: Preferences different from defaults after loading the file:
[2024-11-03 00:31:55,971 INFO  L151        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2024-11-03 00:31:55,971 INFO  L153        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2024-11-03 00:31:55,972 INFO  L151        SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults:
[2024-11-03 00:31:55,972 INFO  L153        SettingsManager]:  * Use memory slicer=true
[2024-11-03 00:31:55,973 INFO  L151        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2024-11-03 00:31:55,974 INFO  L153        SettingsManager]:  * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2024-11-03 00:31:55,975 INFO  L151        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2024-11-03 00:31:55,975 INFO  L153        SettingsManager]:  * Create parallel compositions if possible=false
[2024-11-03 00:31:55,975 INFO  L153        SettingsManager]:  * Use SBE=true
[2024-11-03 00:31:55,976 INFO  L151        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2024-11-03 00:31:55,976 INFO  L153        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2024-11-03 00:31:55,976 INFO  L153        SettingsManager]:  * sizeof long=4
[2024-11-03 00:31:55,976 INFO  L153        SettingsManager]:  * sizeof POINTER=4
[2024-11-03 00:31:55,977 INFO  L153        SettingsManager]:  * Check division by zero=IGNORE
[2024-11-03 00:31:55,977 INFO  L153        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2024-11-03 00:31:55,982 INFO  L153        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2024-11-03 00:31:55,982 INFO  L153        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2024-11-03 00:31:55,982 INFO  L153        SettingsManager]:  * Adapt memory model on pointer casts if necessary=true
[2024-11-03 00:31:55,982 INFO  L153        SettingsManager]:  * Use bitvectors instead of ints=true
[2024-11-03 00:31:55,982 INFO  L153        SettingsManager]:  * Allow undefined functions=false
[2024-11-03 00:31:55,983 INFO  L153        SettingsManager]:  * Memory model=HoenickeLindenmann_4ByteResolution
[2024-11-03 00:31:55,983 INFO  L153        SettingsManager]:  * sizeof long double=12
[2024-11-03 00:31:55,983 INFO  L153        SettingsManager]:  * Check if freed pointer was valid=false
[2024-11-03 00:31:55,983 INFO  L153        SettingsManager]:  * Use constant arrays=true
[2024-11-03 00:31:55,984 INFO  L151        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2024-11-03 00:31:55,984 INFO  L153        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2024-11-03 00:31:55,984 INFO  L153        SettingsManager]:  * Only consider context switches at boundaries of atomic blocks=true
[2024-11-03 00:31:55,984 INFO  L153        SettingsManager]:  * SMT solver=External_DefaultMode
[2024-11-03 00:31:55,985 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2024-11-03 00:31:55,985 INFO  L151        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2024-11-03 00:31:55,985 INFO  L153        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2024-11-03 00:31:55,986 INFO  L153        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopHeads
[2024-11-03 00:31:55,986 INFO  L153        SettingsManager]:  * Trace refinement strategy=WOLF
[2024-11-03 00:31:55,986 INFO  L153        SettingsManager]:  * Command for external solver=cvc4 --incremental --print-success --lang smt
[2024-11-03 00:31:55,986 INFO  L153        SettingsManager]:  * Apply one-shot large block encoding in concurrent analysis=false
[2024-11-03 00:31:55,986 INFO  L153        SettingsManager]:  * Automaton type used in concurrency analysis=PETRI_NET
[2024-11-03 00:31:55,986 INFO  L153        SettingsManager]:  * Order on configurations for Petri net unfoldings=DBO
[2024-11-03 00:31:55,987 INFO  L153        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2024-11-03 00:31:55,987 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$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Allow undefined functions -> true
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> External_ModelsAndUnsatCoreMode
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Command for external solver -> cvc4 --incremental --print-success --lang smt
[2024-11-03 00:31:56,244 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2024-11-03 00:31:56,281 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2024-11-03 00:31:56,283 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2024-11-03 00:31:56,285 INFO  L270        PluginConnector]: Initializing CDTParser...
[2024-11-03 00:31:56,285 INFO  L274        PluginConnector]: CDTParser initialized
[2024-11-03 00:31:56,287 INFO  L431   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_floatingpointinfluence_has-floats_file-33.i
[2024-11-03 00:31:57,975 INFO  L533              CDTParser]: Created temporary CDT project at NULL
[2024-11-03 00:31:58,158 INFO  L384              CDTParser]: Found 1 translation units.
[2024-11-03 00:31:58,159 INFO  L180              CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_floatingpointinfluence_has-floats_file-33.i
[2024-11-03 00:31:58,168 INFO  L427              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a26b1a70f/6e94687c4bc54410a547bc25fcb0801f/FLAG919c2d1c0
[2024-11-03 00:31:58,184 INFO  L435              CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a26b1a70f/6e94687c4bc54410a547bc25fcb0801f
[2024-11-03 00:31:58,187 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2024-11-03 00:31:58,188 INFO  L133        ToolchainWalker]: Walking toolchain with 5 elements.
[2024-11-03 00:31:58,190 INFO  L112        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2024-11-03 00:31:58,191 INFO  L270        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2024-11-03 00:31:58,200 INFO  L274        PluginConnector]: CACSL2BoogieTranslator initialized
[2024-11-03 00:31:58,201 INFO  L184        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 12:31:58" (1/1) ...
[2024-11-03 00:31:58,202 INFO  L204        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@f5114cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:31:58, skipping insertion in model container
[2024-11-03 00:31:58,202 INFO  L184        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 12:31:58" (1/1) ...
[2024-11-03 00:31:58,226 INFO  L175         MainTranslator]: Built tables and reachable declarations
[2024-11-03 00:31:58,399 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_floatingpointinfluence_has-floats_file-33.i[917,930]
[2024-11-03 00:31:58,443 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2024-11-03 00:31:58,458 INFO  L200         MainTranslator]: Completed pre-run
[2024-11-03 00:31:58,470 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_floatingpointinfluence_has-floats_file-33.i[917,930]
[2024-11-03 00:31:58,504 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2024-11-03 00:31:58,527 INFO  L204         MainTranslator]: Completed translation
[2024-11-03 00:31:58,528 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:31:58 WrapperNode
[2024-11-03 00:31:58,528 INFO  L131        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2024-11-03 00:31:58,529 INFO  L112        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2024-11-03 00:31:58,529 INFO  L270        PluginConnector]: Initializing Boogie Procedure Inliner...
[2024-11-03 00:31:58,529 INFO  L274        PluginConnector]: Boogie Procedure Inliner initialized
[2024-11-03 00:31:58,536 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:31:58" (1/1) ...
[2024-11-03 00:31:58,548 INFO  L184        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:31:58" (1/1) ...
[2024-11-03 00:31:58,569 INFO  L138                Inliner]: procedures = 27, calls = 22, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 91
[2024-11-03 00:31:58,569 INFO  L131        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2024-11-03 00:31:58,570 INFO  L112        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2024-11-03 00:31:58,570 INFO  L270        PluginConnector]: Initializing Boogie Preprocessor...
[2024-11-03 00:31:58,570 INFO  L274        PluginConnector]: Boogie Preprocessor initialized
[2024-11-03 00:31:58,584 INFO  L184        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:31:58" (1/1) ...
[2024-11-03 00:31:58,584 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:31:58" (1/1) ...
[2024-11-03 00:31:58,593 INFO  L184        PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:31:58" (1/1) ...
[2024-11-03 00:31:58,610 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 00:31:58,614 INFO  L184        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:31:58" (1/1) ...
[2024-11-03 00:31:58,614 INFO  L184        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:31:58" (1/1) ...
[2024-11-03 00:31:58,625 INFO  L184        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:31:58" (1/1) ...
[2024-11-03 00:31:58,631 INFO  L184        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:31:58" (1/1) ...
[2024-11-03 00:31:58,633 INFO  L184        PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:31:58" (1/1) ...
[2024-11-03 00:31:58,641 INFO  L184        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:31:58" (1/1) ...
[2024-11-03 00:31:58,644 INFO  L131        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2024-11-03 00:31:58,648 INFO  L112        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2024-11-03 00:31:58,649 INFO  L270        PluginConnector]: Initializing RCFGBuilder...
[2024-11-03 00:31:58,649 INFO  L274        PluginConnector]: RCFGBuilder initialized
[2024-11-03 00:31:58,649 INFO  L184        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:31:58" (1/1) ...
[2024-11-03 00:31:58,656 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2024-11-03 00:31:58,665 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2024-11-03 00:31:58,690 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 00:31:58,695 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 00:31:58,719 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2024-11-03 00:31:58,720 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0
[2024-11-03 00:31:58,720 INFO  L130     BoogieDeclarations]: Found specification of procedure assume_abort_if_not
[2024-11-03 00:31:58,720 INFO  L138     BoogieDeclarations]: Found implementation of procedure assume_abort_if_not
[2024-11-03 00:31:58,720 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2024-11-03 00:31:58,720 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2024-11-03 00:31:58,837 INFO  L238             CfgBuilder]: Building ICFG
[2024-11-03 00:31:58,840 INFO  L264             CfgBuilder]: Building CFG for each procedure with an implementation
[2024-11-03 00:31:59,673 INFO  L?                        ?]: Removed 12 outVars from TransFormulas that were not future-live.
[2024-11-03 00:31:59,673 INFO  L287             CfgBuilder]: Performing block encoding
[2024-11-03 00:31:59,685 INFO  L311             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2024-11-03 00:31:59,685 INFO  L316             CfgBuilder]: Removed 1 assume(true) statements.
[2024-11-03 00:31:59,685 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 12:31:59 BoogieIcfgContainer
[2024-11-03 00:31:59,686 INFO  L131        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2024-11-03 00:31:59,688 INFO  L112        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2024-11-03 00:31:59,688 INFO  L270        PluginConnector]: Initializing TraceAbstraction...
[2024-11-03 00:31:59,690 INFO  L274        PluginConnector]: TraceAbstraction initialized
[2024-11-03 00:31:59,691 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 12:31:58" (1/3) ...
[2024-11-03 00:31:59,691 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@166bfae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 12:31:59, skipping insertion in model container
[2024-11-03 00:31:59,692 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:31:58" (2/3) ...
[2024-11-03 00:31:59,692 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@166bfae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 12:31:59, skipping insertion in model container
[2024-11-03 00:31:59,692 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 12:31:59" (3/3) ...
[2024-11-03 00:31:59,693 INFO  L112   eAbstractionObserver]: Analyzing ICFG hardness_floatingpointinfluence_has-floats_file-33.i
[2024-11-03 00:31:59,709 INFO  L214   ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2024-11-03 00:31:59,709 INFO  L154   ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2024-11-03 00:31:59,764 INFO  L332      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2024-11-03 00:31:59,772 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;@55666f0c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2024-11-03 00:31:59,773 INFO  L334      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2024-11-03 00:31:59,778 INFO  L276                IsEmpty]: Start isEmpty. Operand  has 41 states, 29 states have (on average 1.3448275862068966) internal successors, (39), 30 states have internal predecessors, (39), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9)
[2024-11-03 00:31:59,787 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 67
[2024-11-03 00:31:59,787 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-03 00:31:59,788 INFO  L215           NwaCegarLoop]: trace histogram [9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:31:59,788 INFO  L396      AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-03 00:31:59,793 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-03 00:31:59,793 INFO  L85        PathProgramCache]: Analyzing trace with hash -222403520, now seen corresponding path program 1 times
[2024-11-03 00:31:59,801 INFO  L118   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2024-11-03 00:31:59,801 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [20921686]
[2024-11-03 00:31:59,802 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-03 00:31:59,804 INFO  L173          SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt
[2024-11-03 00:31:59,804 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4
[2024-11-03 00:31:59,807 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 00:31:59,809 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 00:32:00,166 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-03 00:32:00,178 INFO  L255         TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 1 conjuncts are in the unsatisfiable core
[2024-11-03 00:32:00,190 INFO  L278         TraceCheckSpWp]: Computing forward predicates...
[2024-11-03 00:32:00,240 INFO  L134       CoverageAnalysis]: Checked inductivity of 144 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 128 trivial. 0 not checked.
[2024-11-03 00:32:00,240 INFO  L311         TraceCheckSpWp]: Computing backward predicates...
[2024-11-03 00:32:00,332 INFO  L134       CoverageAnalysis]: Checked inductivity of 144 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 128 trivial. 0 not checked.
[2024-11-03 00:32:00,333 INFO  L136   FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2024-11-03 00:32:00,333 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [20921686]
[2024-11-03 00:32:00,334 INFO  L158   FreeRefinementEngine]: IpTcStrategyModulePreferences [20921686] provided 2 perfect and 0 imperfect interpolant sequences
[2024-11-03 00:32:00,334 INFO  L185   FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences.
[2024-11-03 00:32:00,338 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2
[2024-11-03 00:32:00,340 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [156926851]
[2024-11-03 00:32:00,346 INFO  L85    oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton
[2024-11-03 00:32:00,355 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 2 states
[2024-11-03 00:32:00,355 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2024-11-03 00:32:00,385 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants.
[2024-11-03 00:32:00,386 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2024-11-03 00:32:00,388 INFO  L87              Difference]: Start difference. First operand  has 41 states, 29 states have (on average 1.3448275862068966) internal successors, (39), 30 states have internal predecessors, (39), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) Second operand  has 2 states, 2 states have (on average 13.0) internal successors, (26), 2 states have internal predecessors, (26), 1 states have call successors, (9), 1 states have call predecessors, (9), 2 states have return successors, (9), 2 states have call predecessors, (9), 1 states have call successors, (9)
[2024-11-03 00:32:00,434 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-03 00:32:00,434 INFO  L93              Difference]: Finished difference Result 75 states and 117 transitions.
[2024-11-03 00:32:00,440 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. 
[2024-11-03 00:32:00,441 INFO  L78                 Accepts]: Start accepts. Automaton has  has 2 states, 2 states have (on average 13.0) internal successors, (26), 2 states have internal predecessors, (26), 1 states have call successors, (9), 1 states have call predecessors, (9), 2 states have return successors, (9), 2 states have call predecessors, (9), 1 states have call successors, (9) Word has length 66
[2024-11-03 00:32:00,442 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-03 00:32:00,453 INFO  L225             Difference]: With dead ends: 75
[2024-11-03 00:32:00,454 INFO  L226             Difference]: Without dead ends: 37
[2024-11-03 00:32:00,459 INFO  L431           NwaCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 130 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 00:32:00,462 INFO  L432           NwaCegarLoop]: 50 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, 50 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 00:32:00,465 INFO  L433           NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2024-11-03 00:32:00,484 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 37 states.
[2024-11-03 00:32:00,511 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37.
[2024-11-03 00:32:00,513 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 37 states, 26 states have (on average 1.2307692307692308) internal successors, (32), 26 states have internal predecessors, (32), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9)
[2024-11-03 00:32:00,514 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 50 transitions.
[2024-11-03 00:32:00,516 INFO  L78                 Accepts]: Start accepts. Automaton has 37 states and 50 transitions. Word has length 66
[2024-11-03 00:32:00,516 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-03 00:32:00,516 INFO  L471      AbstractCegarLoop]: Abstraction has 37 states and 50 transitions.
[2024-11-03 00:32:00,516 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 2 states, 2 states have (on average 13.0) internal successors, (26), 2 states have internal predecessors, (26), 1 states have call successors, (9), 1 states have call predecessors, (9), 2 states have return successors, (9), 2 states have call predecessors, (9), 1 states have call successors, (9)
[2024-11-03 00:32:00,516 INFO  L276                IsEmpty]: Start isEmpty. Operand 37 states and 50 transitions.
[2024-11-03 00:32:00,524 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 67
[2024-11-03 00:32:00,524 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-03 00:32:00,524 INFO  L215           NwaCegarLoop]: trace histogram [9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:32:00,535 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 00:32:00,725 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 00:32:00,726 INFO  L396      AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-03 00:32:00,727 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-03 00:32:00,727 INFO  L85        PathProgramCache]: Analyzing trace with hash 1057703046, now seen corresponding path program 1 times
[2024-11-03 00:32:00,727 INFO  L118   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2024-11-03 00:32:00,727 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1605127210]
[2024-11-03 00:32:00,728 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-03 00:32:00,728 INFO  L173          SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt
[2024-11-03 00:32:00,728 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4
[2024-11-03 00:32:00,730 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 00:32:00,732 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 00:32:01,268 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-03 00:32:01,280 INFO  L255         TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 4 conjuncts are in the unsatisfiable core
[2024-11-03 00:32:01,284 INFO  L278         TraceCheckSpWp]: Computing forward predicates...
[2024-11-03 00:32:01,453 INFO  L134       CoverageAnalysis]: Checked inductivity of 144 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked.
[2024-11-03 00:32:01,453 INFO  L311         TraceCheckSpWp]: Computing backward predicates...
[2024-11-03 00:32:01,569 INFO  L134       CoverageAnalysis]: Checked inductivity of 144 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked.
[2024-11-03 00:32:01,570 INFO  L136   FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2024-11-03 00:32:01,570 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1605127210]
[2024-11-03 00:32:01,570 INFO  L158   FreeRefinementEngine]: IpTcStrategyModulePreferences [1605127210] provided 2 perfect and 0 imperfect interpolant sequences
[2024-11-03 00:32:01,570 INFO  L185   FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences.
[2024-11-03 00:32:01,570 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8
[2024-11-03 00:32:01,570 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [232407354]
[2024-11-03 00:32:01,571 INFO  L85    oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton
[2024-11-03 00:32:01,572 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 8 states
[2024-11-03 00:32:01,572 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2024-11-03 00:32:01,573 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2024-11-03 00:32:01,573 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56
[2024-11-03 00:32:01,574 INFO  L87              Difference]: Start difference. First operand 37 states and 50 transitions. Second operand  has 8 states, 8 states have (on average 3.5) internal successors, (28), 8 states have internal predecessors, (28), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9)
[2024-11-03 00:32:02,570 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-03 00:32:02,571 INFO  L93              Difference]: Finished difference Result 97 states and 134 transitions.
[2024-11-03 00:32:02,571 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2024-11-03 00:32:02,572 INFO  L78                 Accepts]: Start accepts. Automaton has  has 8 states, 8 states have (on average 3.5) internal successors, (28), 8 states have internal predecessors, (28), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) Word has length 66
[2024-11-03 00:32:02,572 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-03 00:32:02,574 INFO  L225             Difference]: With dead ends: 97
[2024-11-03 00:32:02,574 INFO  L226             Difference]: Without dead ends: 63
[2024-11-03 00:32:02,575 INFO  L431           NwaCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 124 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90
[2024-11-03 00:32:02,576 INFO  L432           NwaCegarLoop]: 74 mSDtfsCounter, 64 mSDsluCounter, 208 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 282 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time
[2024-11-03 00:32:02,577 INFO  L433           NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 282 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time]
[2024-11-03 00:32:02,578 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 63 states.
[2024-11-03 00:32:02,585 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 37.
[2024-11-03 00:32:02,586 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 37 states, 26 states have (on average 1.1538461538461537) internal successors, (30), 26 states have internal predecessors, (30), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9)
[2024-11-03 00:32:02,587 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 48 transitions.
[2024-11-03 00:32:02,587 INFO  L78                 Accepts]: Start accepts. Automaton has 37 states and 48 transitions. Word has length 66
[2024-11-03 00:32:02,589 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-03 00:32:02,589 INFO  L471      AbstractCegarLoop]: Abstraction has 37 states and 48 transitions.
[2024-11-03 00:32:02,589 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 8 states, 8 states have (on average 3.5) internal successors, (28), 8 states have internal predecessors, (28), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9)
[2024-11-03 00:32:02,589 INFO  L276                IsEmpty]: Start isEmpty. Operand 37 states and 48 transitions.
[2024-11-03 00:32:02,591 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 67
[2024-11-03 00:32:02,591 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-03 00:32:02,591 INFO  L215           NwaCegarLoop]: trace histogram [9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:32:02,598 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 00:32:02,795 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 00:32:02,798 INFO  L396      AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-03 00:32:02,799 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-03 00:32:02,799 INFO  L85        PathProgramCache]: Analyzing trace with hash 1116808390, now seen corresponding path program 1 times
[2024-11-03 00:32:02,799 INFO  L118   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2024-11-03 00:32:02,800 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [107012201]
[2024-11-03 00:32:02,800 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-03 00:32:02,800 INFO  L173          SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt
[2024-11-03 00:32:02,800 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4
[2024-11-03 00:32:02,803 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 00:32:02,804 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 00:32:03,426 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-03 00:32:03,439 INFO  L255         TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 7 conjuncts are in the unsatisfiable core
[2024-11-03 00:32:03,443 INFO  L278         TraceCheckSpWp]: Computing forward predicates...
[2024-11-03 00:32:04,005 INFO  L134       CoverageAnalysis]: Checked inductivity of 144 backedges. 8 proven. 24 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked.
[2024-11-03 00:32:04,006 INFO  L311         TraceCheckSpWp]: Computing backward predicates...
[2024-11-03 00:32:04,385 INFO  L134       CoverageAnalysis]: Checked inductivity of 144 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked.
[2024-11-03 00:32:04,385 INFO  L136   FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2024-11-03 00:32:04,385 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [107012201]
[2024-11-03 00:32:04,386 INFO  L158   FreeRefinementEngine]: IpTcStrategyModulePreferences [107012201] provided 0 perfect and 2 imperfect interpolant sequences
[2024-11-03 00:32:04,386 INFO  L185   FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2024-11-03 00:32:04,386 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7] total 12
[2024-11-03 00:32:04,386 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2035522436]
[2024-11-03 00:32:04,386 INFO  L85    oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2024-11-03 00:32:04,386 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 12 states
[2024-11-03 00:32:04,387 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2024-11-03 00:32:04,387 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants.
[2024-11-03 00:32:04,388 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132
[2024-11-03 00:32:04,388 INFO  L87              Difference]: Start difference. First operand 37 states and 48 transitions. Second operand  has 12 states, 12 states have (on average 3.75) internal successors, (45), 12 states have internal predecessors, (45), 4 states have call successors, (18), 3 states have call predecessors, (18), 4 states have return successors, (18), 2 states have call predecessors, (18), 4 states have call successors, (18)
[2024-11-03 00:32:05,491 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-03 00:32:05,492 INFO  L93              Difference]: Finished difference Result 128 states and 162 transitions.
[2024-11-03 00:32:05,492 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. 
[2024-11-03 00:32:05,492 INFO  L78                 Accepts]: Start accepts. Automaton has  has 12 states, 12 states have (on average 3.75) internal successors, (45), 12 states have internal predecessors, (45), 4 states have call successors, (18), 3 states have call predecessors, (18), 4 states have return successors, (18), 2 states have call predecessors, (18), 4 states have call successors, (18) Word has length 66
[2024-11-03 00:32:05,493 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-03 00:32:05,494 INFO  L225             Difference]: With dead ends: 128
[2024-11-03 00:32:05,494 INFO  L226             Difference]: Without dead ends: 94
[2024-11-03 00:32:05,495 INFO  L431           NwaCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 121 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=120, Invalid=222, Unknown=0, NotChecked=0, Total=342
[2024-11-03 00:32:05,496 INFO  L432           NwaCegarLoop]: 36 mSDtfsCounter, 134 mSDsluCounter, 126 mSDsCounter, 0 mSdLazyCounter, 154 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 142 SdHoareTripleChecker+Valid, 162 SdHoareTripleChecker+Invalid, 205 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 154 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time
[2024-11-03 00:32:05,496 INFO  L433           NwaCegarLoop]: SdHoareTripleChecker [142 Valid, 162 Invalid, 205 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 154 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time]
[2024-11-03 00:32:05,497 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 94 states.
[2024-11-03 00:32:05,511 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 63.
[2024-11-03 00:32:05,511 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 63 states, 41 states have (on average 1.0975609756097562) internal successors, (45), 41 states have internal predecessors, (45), 18 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18)
[2024-11-03 00:32:05,512 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 81 transitions.
[2024-11-03 00:32:05,514 INFO  L78                 Accepts]: Start accepts. Automaton has 63 states and 81 transitions. Word has length 66
[2024-11-03 00:32:05,514 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-03 00:32:05,514 INFO  L471      AbstractCegarLoop]: Abstraction has 63 states and 81 transitions.
[2024-11-03 00:32:05,515 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 12 states, 12 states have (on average 3.75) internal successors, (45), 12 states have internal predecessors, (45), 4 states have call successors, (18), 3 states have call predecessors, (18), 4 states have return successors, (18), 2 states have call predecessors, (18), 4 states have call successors, (18)
[2024-11-03 00:32:05,515 INFO  L276                IsEmpty]: Start isEmpty. Operand 63 states and 81 transitions.
[2024-11-03 00:32:05,516 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 67
[2024-11-03 00:32:05,516 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-03 00:32:05,516 INFO  L215           NwaCegarLoop]: trace histogram [9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:32:05,530 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 00:32:05,722 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 00:32:05,723 INFO  L396      AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-03 00:32:05,724 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-03 00:32:05,724 INFO  L85        PathProgramCache]: Analyzing trace with hash 723781380, now seen corresponding path program 1 times
[2024-11-03 00:32:05,724 INFO  L118   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2024-11-03 00:32:05,724 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1421400245]
[2024-11-03 00:32:05,724 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-03 00:32:05,725 INFO  L173          SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt
[2024-11-03 00:32:05,725 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4
[2024-11-03 00:32:05,732 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 00:32:05,733 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 00:32:06,312 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-03 00:32:06,326 INFO  L255         TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 16 conjuncts are in the unsatisfiable core
[2024-11-03 00:32:06,337 INFO  L278         TraceCheckSpWp]: Computing forward predicates...