/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_amount250_file-66.i


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


This is Ultimate 0.2.5-dev-b75d321-m
[2024-11-03 01:19:08,982 INFO  L188        SettingsManager]: Resetting all preferences to default values...
[2024-11-03 01:19:09,049 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 01:19:09,054 WARN  L101        SettingsManager]: Preference file contains the following unknown settings:
[2024-11-03 01:19:09,054 WARN  L103        SettingsManager]:   * de.uni_freiburg.informatik.ultimate.core.Log level for class
[2024-11-03 01:19:09,084 INFO  L130        SettingsManager]: Preferences different from defaults after loading the file:
[2024-11-03 01:19:09,085 INFO  L151        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2024-11-03 01:19:09,085 INFO  L153        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2024-11-03 01:19:09,085 INFO  L151        SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults:
[2024-11-03 01:19:09,086 INFO  L153        SettingsManager]:  * Use memory slicer=true
[2024-11-03 01:19:09,086 INFO  L151        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2024-11-03 01:19:09,089 INFO  L153        SettingsManager]:  * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2024-11-03 01:19:09,090 INFO  L151        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2024-11-03 01:19:09,090 INFO  L153        SettingsManager]:  * Create parallel compositions if possible=false
[2024-11-03 01:19:09,090 INFO  L153        SettingsManager]:  * Use SBE=true
[2024-11-03 01:19:09,090 INFO  L151        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2024-11-03 01:19:09,091 INFO  L153        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2024-11-03 01:19:09,093 INFO  L153        SettingsManager]:  * sizeof long=4
[2024-11-03 01:19:09,093 INFO  L153        SettingsManager]:  * sizeof POINTER=4
[2024-11-03 01:19:09,094 INFO  L153        SettingsManager]:  * Check division by zero=IGNORE
[2024-11-03 01:19:09,094 INFO  L153        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2024-11-03 01:19:09,098 INFO  L153        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2024-11-03 01:19:09,099 INFO  L153        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2024-11-03 01:19:09,099 INFO  L153        SettingsManager]:  * Adapt memory model on pointer casts if necessary=true
[2024-11-03 01:19:09,099 INFO  L153        SettingsManager]:  * Use bitvectors instead of ints=true
[2024-11-03 01:19:09,099 INFO  L153        SettingsManager]:  * Allow undefined functions=false
[2024-11-03 01:19:09,099 INFO  L153        SettingsManager]:  * Memory model=HoenickeLindenmann_4ByteResolution
[2024-11-03 01:19:09,099 INFO  L153        SettingsManager]:  * sizeof long double=12
[2024-11-03 01:19:09,100 INFO  L153        SettingsManager]:  * Check if freed pointer was valid=false
[2024-11-03 01:19:09,100 INFO  L153        SettingsManager]:  * Use constant arrays=true
[2024-11-03 01:19:09,100 INFO  L151        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2024-11-03 01:19:09,100 INFO  L153        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2024-11-03 01:19:09,100 INFO  L153        SettingsManager]:  * Only consider context switches at boundaries of atomic blocks=true
[2024-11-03 01:19:09,100 INFO  L153        SettingsManager]:  * SMT solver=External_DefaultMode
[2024-11-03 01:19:09,101 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2024-11-03 01:19:09,101 INFO  L151        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2024-11-03 01:19:09,101 INFO  L153        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2024-11-03 01:19:09,101 INFO  L153        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopHeads
[2024-11-03 01:19:09,101 INFO  L153        SettingsManager]:  * Trace refinement strategy=WOLF
[2024-11-03 01:19:09,101 INFO  L153        SettingsManager]:  * Command for external solver=cvc4 --incremental --print-success --lang smt
[2024-11-03 01:19:09,102 INFO  L153        SettingsManager]:  * Apply one-shot large block encoding in concurrent analysis=false
[2024-11-03 01:19:09,103 INFO  L153        SettingsManager]:  * Automaton type used in concurrency analysis=PETRI_NET
[2024-11-03 01:19:09,103 INFO  L153        SettingsManager]:  * Order on configurations for Petri net unfoldings=DBO
[2024-11-03 01:19:09,103 INFO  L153        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2024-11-03 01:19:09,104 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$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Allow undefined functions -> true
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> External_ModelsAndUnsatCoreMode
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Command for external solver -> cvc4 --incremental --print-success --lang smt
[2024-11-03 01:19:09,276 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2024-11-03 01:19:09,293 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2024-11-03 01:19:09,296 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2024-11-03 01:19:09,297 INFO  L270        PluginConnector]: Initializing CDTParser...
[2024-11-03 01:19:09,297 INFO  L274        PluginConnector]: CDTParser initialized
[2024-11-03 01:19:09,298 INFO  L431   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount250_file-66.i
[2024-11-03 01:19:10,720 INFO  L533              CDTParser]: Created temporary CDT project at NULL
[2024-11-03 01:19:10,916 INFO  L384              CDTParser]: Found 1 translation units.
[2024-11-03 01:19:10,917 INFO  L180              CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount250_file-66.i
[2024-11-03 01:19:10,927 INFO  L427              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a4dce37b4/1f94338838344c63a64d6fdf1bafcb58/FLAG8ae79edb4
[2024-11-03 01:19:11,298 INFO  L435              CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a4dce37b4/1f94338838344c63a64d6fdf1bafcb58
[2024-11-03 01:19:11,300 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2024-11-03 01:19:11,301 INFO  L133        ToolchainWalker]: Walking toolchain with 5 elements.
[2024-11-03 01:19:11,302 INFO  L112        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2024-11-03 01:19:11,302 INFO  L270        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2024-11-03 01:19:11,306 INFO  L274        PluginConnector]: CACSL2BoogieTranslator initialized
[2024-11-03 01:19:11,307 INFO  L184        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 01:19:11" (1/1) ...
[2024-11-03 01:19:11,307 INFO  L204        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2fbe1fd1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:19:11, skipping insertion in model container
[2024-11-03 01:19:11,307 INFO  L184        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 01:19:11" (1/1) ...
[2024-11-03 01:19:11,335 INFO  L175         MainTranslator]: Built tables and reachable declarations
[2024-11-03 01:19:11,470 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_operatoramount_amount250_file-66.i[916,929]
[2024-11-03 01:19:11,574 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2024-11-03 01:19:11,601 INFO  L200         MainTranslator]: Completed pre-run
[2024-11-03 01:19:11,622 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_amount250_file-66.i[916,929]
[2024-11-03 01:19:11,693 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2024-11-03 01:19:11,726 INFO  L204         MainTranslator]: Completed translation
[2024-11-03 01:19:11,726 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:19:11 WrapperNode
[2024-11-03 01:19:11,727 INFO  L131        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2024-11-03 01:19:11,727 INFO  L112        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2024-11-03 01:19:11,728 INFO  L270        PluginConnector]: Initializing Boogie Procedure Inliner...
[2024-11-03 01:19:11,728 INFO  L274        PluginConnector]: Boogie Procedure Inliner initialized
[2024-11-03 01:19:11,737 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:19:11" (1/1) ...
[2024-11-03 01:19:11,767 INFO  L184        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:19:11" (1/1) ...
[2024-11-03 01:19:11,811 INFO  L138                Inliner]: procedures = 27, calls = 56, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 335
[2024-11-03 01:19:11,812 INFO  L131        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2024-11-03 01:19:11,813 INFO  L112        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2024-11-03 01:19:11,813 INFO  L270        PluginConnector]: Initializing Boogie Preprocessor...
[2024-11-03 01:19:11,816 INFO  L274        PluginConnector]: Boogie Preprocessor initialized
[2024-11-03 01:19:11,825 INFO  L184        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:19:11" (1/1) ...
[2024-11-03 01:19:11,826 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:19:11" (1/1) ...
[2024-11-03 01:19:11,836 INFO  L184        PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:19:11" (1/1) ...
[2024-11-03 01:19:11,857 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 01:19:11,857 INFO  L184        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:19:11" (1/1) ...
[2024-11-03 01:19:11,857 INFO  L184        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:19:11" (1/1) ...
[2024-11-03 01:19:11,873 INFO  L184        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:19:11" (1/1) ...
[2024-11-03 01:19:11,883 INFO  L184        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:19:11" (1/1) ...
[2024-11-03 01:19:11,887 INFO  L184        PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:19:11" (1/1) ...
[2024-11-03 01:19:11,889 INFO  L184        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:19:11" (1/1) ...
[2024-11-03 01:19:11,894 INFO  L131        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2024-11-03 01:19:11,895 INFO  L112        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2024-11-03 01:19:11,895 INFO  L270        PluginConnector]: Initializing RCFGBuilder...
[2024-11-03 01:19:11,895 INFO  L274        PluginConnector]: RCFGBuilder initialized
[2024-11-03 01:19:11,896 INFO  L184        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:19:11" (1/1) ...
[2024-11-03 01:19:11,901 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2024-11-03 01:19:11,911 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2024-11-03 01:19:11,937 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 01:19:11,944 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 01:19:11,963 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2024-11-03 01:19:11,963 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0
[2024-11-03 01:19:11,963 INFO  L130     BoogieDeclarations]: Found specification of procedure assume_abort_if_not
[2024-11-03 01:19:11,964 INFO  L138     BoogieDeclarations]: Found implementation of procedure assume_abort_if_not
[2024-11-03 01:19:11,964 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2024-11-03 01:19:11,964 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2024-11-03 01:19:12,043 INFO  L238             CfgBuilder]: Building ICFG
[2024-11-03 01:19:12,045 INFO  L264             CfgBuilder]: Building CFG for each procedure with an implementation
[2024-11-03 01:19:35,415 INFO  L?                        ?]: Removed 52 outVars from TransFormulas that were not future-live.
[2024-11-03 01:19:35,415 INFO  L287             CfgBuilder]: Performing block encoding
[2024-11-03 01:19:35,425 INFO  L311             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2024-11-03 01:19:35,425 INFO  L316             CfgBuilder]: Removed 1 assume(true) statements.
[2024-11-03 01:19:35,426 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 01:19:35 BoogieIcfgContainer
[2024-11-03 01:19:35,426 INFO  L131        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2024-11-03 01:19:35,427 INFO  L112        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2024-11-03 01:19:35,427 INFO  L270        PluginConnector]: Initializing TraceAbstraction...
[2024-11-03 01:19:35,429 INFO  L274        PluginConnector]: TraceAbstraction initialized
[2024-11-03 01:19:35,429 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 01:19:11" (1/3) ...
[2024-11-03 01:19:35,430 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7fa92c56 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 01:19:35, skipping insertion in model container
[2024-11-03 01:19:35,430 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:19:11" (2/3) ...
[2024-11-03 01:19:35,430 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7fa92c56 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 01:19:35, skipping insertion in model container
[2024-11-03 01:19:35,430 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 01:19:35" (3/3) ...
[2024-11-03 01:19:35,431 INFO  L112   eAbstractionObserver]: Analyzing ICFG hardness_operatoramount_amount250_file-66.i
[2024-11-03 01:19:35,441 INFO  L214   ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2024-11-03 01:19:35,441 INFO  L154   ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2024-11-03 01:19:35,483 INFO  L332      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2024-11-03 01:19:35,487 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;@69413752, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2024-11-03 01:19:35,487 INFO  L334      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2024-11-03 01:19:35,490 INFO  L276                IsEmpty]: Start isEmpty. Operand  has 144 states, 98 states have (on average 1.5) internal successors, (147), 99 states have internal predecessors, (147), 43 states have call successors, (43), 1 states have call predecessors, (43), 1 states have return successors, (43), 43 states have call predecessors, (43), 43 states have call successors, (43)
[2024-11-03 01:19:35,504 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 288
[2024-11-03 01:19:35,504 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-03 01:19:35,505 INFO  L215           NwaCegarLoop]: trace histogram [43, 43, 43, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:19:35,505 INFO  L396      AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-03 01:19:35,508 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-03 01:19:35,509 INFO  L85        PathProgramCache]: Analyzing trace with hash 2060702187, now seen corresponding path program 1 times
[2024-11-03 01:19:35,516 INFO  L118   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2024-11-03 01:19:35,516 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [55229067]
[2024-11-03 01:19:35,517 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-03 01:19:35,518 INFO  L173          SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt
[2024-11-03 01:19:35,518 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4
[2024-11-03 01:19:35,521 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 01:19:35,522 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 01:19:36,603 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-03 01:19:36,764 INFO  L255         TraceCheckSpWp]: Trace formula consists of 483 conjuncts, 1 conjuncts are in the unsatisfiable core
[2024-11-03 01:19:36,778 INFO  L278         TraceCheckSpWp]: Computing forward predicates...
[2024-11-03 01:19:36,840 INFO  L134       CoverageAnalysis]: Checked inductivity of 3612 backedges. 84 proven. 0 refuted. 0 times theorem prover too weak. 3528 trivial. 0 not checked.
[2024-11-03 01:19:36,840 INFO  L311         TraceCheckSpWp]: Computing backward predicates...
[2024-11-03 01:19:40,472 INFO  L134       CoverageAnalysis]: Checked inductivity of 3612 backedges. 84 proven. 0 refuted. 0 times theorem prover too weak. 3528 trivial. 0 not checked.
[2024-11-03 01:19:40,473 INFO  L136   FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2024-11-03 01:19:40,473 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [55229067]
[2024-11-03 01:19:40,474 INFO  L158   FreeRefinementEngine]: IpTcStrategyModulePreferences [55229067] provided 2 perfect and 0 imperfect interpolant sequences
[2024-11-03 01:19:40,474 INFO  L185   FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences.
[2024-11-03 01:19:40,474 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2
[2024-11-03 01:19:40,476 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [714915493]
[2024-11-03 01:19:40,476 INFO  L85    oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton
[2024-11-03 01:19:40,480 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 2 states
[2024-11-03 01:19:40,480 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2024-11-03 01:19:40,496 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants.
[2024-11-03 01:19:40,497 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2024-11-03 01:19:40,499 INFO  L87              Difference]: Start difference. First operand  has 144 states, 98 states have (on average 1.5) internal successors, (147), 99 states have internal predecessors, (147), 43 states have call successors, (43), 1 states have call predecessors, (43), 1 states have return successors, (43), 43 states have call predecessors, (43), 43 states have call successors, (43) Second operand  has 2 states, 2 states have (on average 38.5) internal successors, (77), 2 states have internal predecessors, (77), 1 states have call successors, (43), 1 states have call predecessors, (43), 2 states have return successors, (43), 2 states have call predecessors, (43), 1 states have call successors, (43)
[2024-11-03 01:19:40,529 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-03 01:19:40,530 INFO  L93              Difference]: Finished difference Result 281 states and 503 transitions.
[2024-11-03 01:19:40,530 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. 
[2024-11-03 01:19:40,532 INFO  L78                 Accepts]: Start accepts. Automaton has  has 2 states, 2 states have (on average 38.5) internal successors, (77), 2 states have internal predecessors, (77), 1 states have call successors, (43), 1 states have call predecessors, (43), 2 states have return successors, (43), 2 states have call predecessors, (43), 1 states have call successors, (43) Word has length 287
[2024-11-03 01:19:40,532 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-03 01:19:40,538 INFO  L225             Difference]: With dead ends: 281
[2024-11-03 01:19:40,538 INFO  L226             Difference]: Without dead ends: 140
[2024-11-03 01:19:40,542 INFO  L431           NwaCegarLoop]: 0 DeclaredPredicates, 572 GetRequests, 572 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 01:19:40,544 INFO  L432           NwaCegarLoop]: 226 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, 226 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 01:19:40,546 INFO  L433           NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 226 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2024-11-03 01:19:40,560 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 140 states.
[2024-11-03 01:19:40,590 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 140.
[2024-11-03 01:19:40,591 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 140 states, 95 states have (on average 1.4736842105263157) internal successors, (140), 95 states have internal predecessors, (140), 43 states have call successors, (43), 1 states have call predecessors, (43), 1 states have return successors, (43), 43 states have call predecessors, (43), 43 states have call successors, (43)
[2024-11-03 01:19:40,596 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 226 transitions.
[2024-11-03 01:19:40,598 INFO  L78                 Accepts]: Start accepts. Automaton has 140 states and 226 transitions. Word has length 287
[2024-11-03 01:19:40,598 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-03 01:19:40,600 INFO  L471      AbstractCegarLoop]: Abstraction has 140 states and 226 transitions.
[2024-11-03 01:19:40,601 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 2 states, 2 states have (on average 38.5) internal successors, (77), 2 states have internal predecessors, (77), 1 states have call successors, (43), 1 states have call predecessors, (43), 2 states have return successors, (43), 2 states have call predecessors, (43), 1 states have call successors, (43)
[2024-11-03 01:19:40,601 INFO  L276                IsEmpty]: Start isEmpty. Operand 140 states and 226 transitions.
[2024-11-03 01:19:40,604 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 288
[2024-11-03 01:19:40,605 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-03 01:19:40,605 INFO  L215           NwaCegarLoop]: trace histogram [43, 43, 43, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:19:40,618 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (2)] Forceful destruction successful, exit code 0
[2024-11-03 01:19:40,807 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 01:19:40,808 INFO  L396      AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-03 01:19:40,808 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-03 01:19:40,809 INFO  L85        PathProgramCache]: Analyzing trace with hash -948259291, now seen corresponding path program 1 times
[2024-11-03 01:19:40,809 INFO  L118   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2024-11-03 01:19:40,809 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [85782973]
[2024-11-03 01:19:40,809 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-03 01:19:40,809 INFO  L173          SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt
[2024-11-03 01:19:40,809 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4
[2024-11-03 01:19:40,813 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 01:19:40,815 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 01:19:41,803 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-03 01:19:41,852 INFO  L255         TraceCheckSpWp]: Trace formula consists of 483 conjuncts, 2 conjuncts are in the unsatisfiable core
[2024-11-03 01:19:41,861 INFO  L278         TraceCheckSpWp]: Computing forward predicates...
[2024-11-03 01:19:42,057 INFO  L134       CoverageAnalysis]: Checked inductivity of 3612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3612 trivial. 0 not checked.
[2024-11-03 01:19:42,057 INFO  L311         TraceCheckSpWp]: Computing backward predicates...
[2024-11-03 01:19:45,666 INFO  L134       CoverageAnalysis]: Checked inductivity of 3612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3612 trivial. 0 not checked.
[2024-11-03 01:19:45,666 INFO  L136   FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2024-11-03 01:19:45,666 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [85782973]
[2024-11-03 01:19:45,666 INFO  L158   FreeRefinementEngine]: IpTcStrategyModulePreferences [85782973] provided 2 perfect and 0 imperfect interpolant sequences
[2024-11-03 01:19:45,667 INFO  L185   FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences.
[2024-11-03 01:19:45,667 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3
[2024-11-03 01:19:45,667 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1397311722]
[2024-11-03 01:19:45,667 INFO  L85    oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton
[2024-11-03 01:19:45,668 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2024-11-03 01:19:45,668 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2024-11-03 01:19:45,669 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2024-11-03 01:19:45,669 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2024-11-03 01:19:45,670 INFO  L87              Difference]: Start difference. First operand 140 states and 226 transitions. Second operand  has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 1 states have call successors, (43), 1 states have call predecessors, (43), 1 states have return successors, (43), 1 states have call predecessors, (43), 1 states have call successors, (43)
[2024-11-03 01:19:49,527 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.69s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers []
[2024-11-03 01:19:53,654 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.08s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers []
[2024-11-03 01:19:58,361 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.53s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers []
[2024-11-03 01:20:02,926 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.56s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers []
[2024-11-03 01:20:06,939 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers []
[2024-11-03 01:20:07,950 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers []
[2024-11-03 01:20:07,960 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-03 01:20:07,960 INFO  L93              Difference]: Finished difference Result 411 states and 667 transitions.
[2024-11-03 01:20:07,961 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2024-11-03 01:20:07,962 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 1 states have call successors, (43), 1 states have call predecessors, (43), 1 states have return successors, (43), 1 states have call predecessors, (43), 1 states have call successors, (43) Word has length 287
[2024-11-03 01:20:07,963 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-03 01:20:07,967 INFO  L225             Difference]: With dead ends: 411
[2024-11-03 01:20:07,967 INFO  L226             Difference]: Without dead ends: 274
[2024-11-03 01:20:07,968 INFO  L431           NwaCegarLoop]: 0 DeclaredPredicates, 572 GetRequests, 571 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2024-11-03 01:20:07,968 INFO  L432           NwaCegarLoop]: 250 mSDtfsCounter, 205 mSDsluCounter, 195 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 16 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 21.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 205 SdHoareTripleChecker+Valid, 445 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 22.2s IncrementalHoareTripleChecker+Time
[2024-11-03 01:20:07,969 INFO  L433           NwaCegarLoop]: SdHoareTripleChecker [205 Valid, 445 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 27 Invalid, 3 Unknown, 0 Unchecked, 22.2s Time]
[2024-11-03 01:20:07,975 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 274 states.
[2024-11-03 01:20:07,996 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 274 to 177.
[2024-11-03 01:20:07,999 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 177 states, 132 states have (on average 1.4924242424242424) internal successors, (197), 132 states have internal predecessors, (197), 43 states have call successors, (43), 1 states have call predecessors, (43), 1 states have return successors, (43), 43 states have call predecessors, (43), 43 states have call successors, (43)
[2024-11-03 01:20:08,000 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 283 transitions.
[2024-11-03 01:20:08,001 INFO  L78                 Accepts]: Start accepts. Automaton has 177 states and 283 transitions. Word has length 287
[2024-11-03 01:20:08,002 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-03 01:20:08,002 INFO  L471      AbstractCegarLoop]: Abstraction has 177 states and 283 transitions.
[2024-11-03 01:20:08,002 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 1 states have call successors, (43), 1 states have call predecessors, (43), 1 states have return successors, (43), 1 states have call predecessors, (43), 1 states have call successors, (43)
[2024-11-03 01:20:08,002 INFO  L276                IsEmpty]: Start isEmpty. Operand 177 states and 283 transitions.
[2024-11-03 01:20:08,009 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 288
[2024-11-03 01:20:08,009 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-03 01:20:08,009 INFO  L215           NwaCegarLoop]: trace histogram [43, 43, 43, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:20:08,025 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 01:20:08,209 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 01:20:08,210 INFO  L396      AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-03 01:20:08,210 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-03 01:20:08,211 INFO  L85        PathProgramCache]: Analyzing trace with hash 769866957, now seen corresponding path program 1 times
[2024-11-03 01:20:08,211 INFO  L118   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2024-11-03 01:20:08,211 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1075363349]
[2024-11-03 01:20:08,211 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-03 01:20:08,211 INFO  L173          SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt
[2024-11-03 01:20:08,211 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4
[2024-11-03 01:20:08,215 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 01:20:08,216 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 01:20:09,431 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-03 01:20:09,542 INFO  L255         TraceCheckSpWp]: Trace formula consists of 484 conjuncts, 2 conjuncts are in the unsatisfiable core
[2024-11-03 01:20:09,547 INFO  L278         TraceCheckSpWp]: Computing forward predicates...
[2024-11-03 01:20:10,105 INFO  L134       CoverageAnalysis]: Checked inductivity of 3612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3612 trivial. 0 not checked.
[2024-11-03 01:20:10,105 INFO  L311         TraceCheckSpWp]: Computing backward predicates...
[2024-11-03 01:20:14,565 INFO  L134       CoverageAnalysis]: Checked inductivity of 3612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3612 trivial. 0 not checked.
[2024-11-03 01:20:14,565 INFO  L136   FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2024-11-03 01:20:14,566 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1075363349]
[2024-11-03 01:20:14,566 INFO  L158   FreeRefinementEngine]: IpTcStrategyModulePreferences [1075363349] provided 2 perfect and 0 imperfect interpolant sequences
[2024-11-03 01:20:14,566 INFO  L185   FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences.
[2024-11-03 01:20:14,566 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3
[2024-11-03 01:20:14,566 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2114748895]
[2024-11-03 01:20:14,566 INFO  L85    oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton
[2024-11-03 01:20:14,568 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2024-11-03 01:20:14,568 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2024-11-03 01:20:14,569 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2024-11-03 01:20:14,569 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2024-11-03 01:20:14,569 INFO  L87              Difference]: Start difference. First operand 177 states and 283 transitions. Second operand  has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 1 states have call successors, (43), 1 states have call predecessors, (43), 1 states have return successors, (43), 1 states have call predecessors, (43), 1 states have call successors, (43)
[2024-11-03 01:20:17,600 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.91s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers []
[2024-11-03 01:20:20,503 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.85s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers []
[2024-11-03 01:20:25,008 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.51s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers []
[2024-11-03 01:20:29,586 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.48s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers []
[2024-11-03 01:20:33,588 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers []
[2024-11-03 01:20:35,230 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-03 01:20:35,230 INFO  L93              Difference]: Finished difference Result 448 states and 716 transitions.
[2024-11-03 01:20:35,242 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2024-11-03 01:20:35,242 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 1 states have call successors, (43), 1 states have call predecessors, (43), 1 states have return successors, (43), 1 states have call predecessors, (43), 1 states have call successors, (43) Word has length 287
[2024-11-03 01:20:35,243 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-03 01:20:35,245 INFO  L225             Difference]: With dead ends: 448
[2024-11-03 01:20:35,245 INFO  L226             Difference]: Without dead ends: 274
[2024-11-03 01:20:35,249 INFO  L431           NwaCegarLoop]: 0 DeclaredPredicates, 572 GetRequests, 571 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2024-11-03 01:20:35,250 INFO  L432           NwaCegarLoop]: 345 mSDtfsCounter, 189 mSDsluCounter, 199 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 6 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 20.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 189 SdHoareTripleChecker+Valid, 544 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 20.6s IncrementalHoareTripleChecker+Time
[2024-11-03 01:20:35,250 INFO  L433           NwaCegarLoop]: SdHoareTripleChecker [189 Valid, 544 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 31 Invalid, 2 Unknown, 0 Unchecked, 20.6s Time]
[2024-11-03 01:20:35,251 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 274 states.
[2024-11-03 01:20:35,278 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 274 to 177.
[2024-11-03 01:20:35,279 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 177 states, 132 states have (on average 1.4393939393939394) internal successors, (190), 132 states have internal predecessors, (190), 43 states have call successors, (43), 1 states have call predecessors, (43), 1 states have return successors, (43), 43 states have call predecessors, (43), 43 states have call successors, (43)
[2024-11-03 01:20:35,280 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 276 transitions.
[2024-11-03 01:20:35,284 INFO  L78                 Accepts]: Start accepts. Automaton has 177 states and 276 transitions. Word has length 287
[2024-11-03 01:20:35,284 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-03 01:20:35,284 INFO  L471      AbstractCegarLoop]: Abstraction has 177 states and 276 transitions.
[2024-11-03 01:20:35,284 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 1 states have call successors, (43), 1 states have call predecessors, (43), 1 states have return successors, (43), 1 states have call predecessors, (43), 1 states have call successors, (43)
[2024-11-03 01:20:35,285 INFO  L276                IsEmpty]: Start isEmpty. Operand 177 states and 276 transitions.
[2024-11-03 01:20:35,287 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 288
[2024-11-03 01:20:35,287 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-03 01:20:35,287 INFO  L215           NwaCegarLoop]: trace histogram [43, 43, 43, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:20:35,304 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 01:20:35,493 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 01:20:35,494 INFO  L396      AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-03 01:20:35,495 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-03 01:20:35,495 INFO  L85        PathProgramCache]: Analyzing trace with hash 1657764263, now seen corresponding path program 1 times
[2024-11-03 01:20:35,496 INFO  L118   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2024-11-03 01:20:35,496 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [156901505]
[2024-11-03 01:20:35,496 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-03 01:20:35,496 INFO  L173          SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt
[2024-11-03 01:20:35,496 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4
[2024-11-03 01:20:35,498 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 01:20:35,499 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 01:20:39,506 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-03 01:20:39,586 INFO  L255         TraceCheckSpWp]: Trace formula consists of 483 conjuncts, 5 conjuncts are in the unsatisfiable core
[2024-11-03 01:20:39,595 INFO  L278         TraceCheckSpWp]: Computing forward predicates...