/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_amount50_file-48.i


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


This is Ultimate 0.2.5-dev-b75d321-m
[2024-11-03 01:54:14,701 INFO  L188        SettingsManager]: Resetting all preferences to default values...
[2024-11-03 01:54:14,779 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 01:54:14,784 WARN  L101        SettingsManager]: Preference file contains the following unknown settings:
[2024-11-03 01:54:14,785 WARN  L103        SettingsManager]:   * de.uni_freiburg.informatik.ultimate.core.Log level for class
[2024-11-03 01:54:14,815 INFO  L130        SettingsManager]: Preferences different from defaults after loading the file:
[2024-11-03 01:54:14,815 INFO  L151        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2024-11-03 01:54:14,816 INFO  L153        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2024-11-03 01:54:14,818 INFO  L151        SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults:
[2024-11-03 01:54:14,819 INFO  L153        SettingsManager]:  * Use memory slicer=true
[2024-11-03 01:54:14,820 INFO  L151        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2024-11-03 01:54:14,820 INFO  L153        SettingsManager]:  * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2024-11-03 01:54:14,820 INFO  L151        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2024-11-03 01:54:14,821 INFO  L153        SettingsManager]:  * Create parallel compositions if possible=false
[2024-11-03 01:54:14,821 INFO  L153        SettingsManager]:  * Use SBE=true
[2024-11-03 01:54:14,821 INFO  L151        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2024-11-03 01:54:14,822 INFO  L153        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2024-11-03 01:54:14,822 INFO  L153        SettingsManager]:  * sizeof long=4
[2024-11-03 01:54:14,822 INFO  L153        SettingsManager]:  * sizeof POINTER=4
[2024-11-03 01:54:14,822 INFO  L153        SettingsManager]:  * Check division by zero=IGNORE
[2024-11-03 01:54:14,823 INFO  L153        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2024-11-03 01:54:14,825 INFO  L153        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2024-11-03 01:54:14,826 INFO  L153        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2024-11-03 01:54:14,826 INFO  L153        SettingsManager]:  * Adapt memory model on pointer casts if necessary=true
[2024-11-03 01:54:14,826 INFO  L153        SettingsManager]:  * Use bitvectors instead of ints=true
[2024-11-03 01:54:14,826 INFO  L153        SettingsManager]:  * Allow undefined functions=false
[2024-11-03 01:54:14,827 INFO  L153        SettingsManager]:  * Memory model=HoenickeLindenmann_4ByteResolution
[2024-11-03 01:54:14,827 INFO  L153        SettingsManager]:  * sizeof long double=12
[2024-11-03 01:54:14,827 INFO  L153        SettingsManager]:  * Check if freed pointer was valid=false
[2024-11-03 01:54:14,827 INFO  L153        SettingsManager]:  * Use constant arrays=true
[2024-11-03 01:54:14,828 INFO  L151        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2024-11-03 01:54:14,828 INFO  L153        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2024-11-03 01:54:14,828 INFO  L153        SettingsManager]:  * Only consider context switches at boundaries of atomic blocks=true
[2024-11-03 01:54:14,828 INFO  L153        SettingsManager]:  * SMT solver=External_DefaultMode
[2024-11-03 01:54:14,828 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2024-11-03 01:54:14,829 INFO  L151        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2024-11-03 01:54:14,829 INFO  L153        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2024-11-03 01:54:14,830 INFO  L153        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopHeads
[2024-11-03 01:54:14,831 INFO  L153        SettingsManager]:  * Trace refinement strategy=WOLF
[2024-11-03 01:54:14,831 INFO  L153        SettingsManager]:  * Command for external solver=cvc4 --incremental --print-success --lang smt
[2024-11-03 01:54:14,831 INFO  L153        SettingsManager]:  * Apply one-shot large block encoding in concurrent analysis=false
[2024-11-03 01:54:14,831 INFO  L153        SettingsManager]:  * Automaton type used in concurrency analysis=PETRI_NET
[2024-11-03 01:54:14,831 INFO  L153        SettingsManager]:  * Order on configurations for Petri net unfoldings=DBO
[2024-11-03 01:54:14,831 INFO  L153        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2024-11-03 01:54:14,832 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$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Allow undefined functions -> true
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> External_ModelsAndUnsatCoreMode
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Command for external solver -> cvc4 --incremental --print-success --lang smt
[2024-11-03 01:54:15,052 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2024-11-03 01:54:15,073 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2024-11-03 01:54:15,076 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2024-11-03 01:54:15,077 INFO  L270        PluginConnector]: Initializing CDTParser...
[2024-11-03 01:54:15,077 INFO  L274        PluginConnector]: CDTParser initialized
[2024-11-03 01:54:15,079 INFO  L431   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount50_file-48.i
[2024-11-03 01:54:16,541 INFO  L533              CDTParser]: Created temporary CDT project at NULL
[2024-11-03 01:54:16,751 INFO  L384              CDTParser]: Found 1 translation units.
[2024-11-03 01:54:16,752 INFO  L180              CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount50_file-48.i
[2024-11-03 01:54:16,763 INFO  L427              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/50d25ae66/f7d9e30bbebf44378f4e472d4535f914/FLAG883bb2733
[2024-11-03 01:54:16,778 INFO  L435              CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/50d25ae66/f7d9e30bbebf44378f4e472d4535f914
[2024-11-03 01:54:16,780 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2024-11-03 01:54:16,782 INFO  L133        ToolchainWalker]: Walking toolchain with 5 elements.
[2024-11-03 01:54:16,783 INFO  L112        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2024-11-03 01:54:16,783 INFO  L270        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2024-11-03 01:54:16,789 INFO  L274        PluginConnector]: CACSL2BoogieTranslator initialized
[2024-11-03 01:54:16,790 INFO  L184        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 01:54:16" (1/1) ...
[2024-11-03 01:54:16,791 INFO  L204        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6c832fc6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:54:16, skipping insertion in model container
[2024-11-03 01:54:16,791 INFO  L184        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 01:54:16" (1/1) ...
[2024-11-03 01:54:16,828 INFO  L175         MainTranslator]: Built tables and reachable declarations
[2024-11-03 01:54:16,995 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_amount50_file-48.i[915,928]
[2024-11-03 01:54:17,050 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2024-11-03 01:54:17,065 INFO  L200         MainTranslator]: Completed pre-run
[2024-11-03 01:54:17,077 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_amount50_file-48.i[915,928]
[2024-11-03 01:54:17,106 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2024-11-03 01:54:17,126 INFO  L204         MainTranslator]: Completed translation
[2024-11-03 01:54:17,127 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:54:17 WrapperNode
[2024-11-03 01:54:17,127 INFO  L131        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2024-11-03 01:54:17,128 INFO  L112        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2024-11-03 01:54:17,128 INFO  L270        PluginConnector]: Initializing Boogie Procedure Inliner...
[2024-11-03 01:54:17,129 INFO  L274        PluginConnector]: Boogie Procedure Inliner initialized
[2024-11-03 01:54:17,135 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:54:17" (1/1) ...
[2024-11-03 01:54:17,146 INFO  L184        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:54:17" (1/1) ...
[2024-11-03 01:54:17,174 INFO  L138                Inliner]: procedures = 27, calls = 33, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 142
[2024-11-03 01:54:17,175 INFO  L131        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2024-11-03 01:54:17,175 INFO  L112        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2024-11-03 01:54:17,176 INFO  L270        PluginConnector]: Initializing Boogie Preprocessor...
[2024-11-03 01:54:17,176 INFO  L274        PluginConnector]: Boogie Preprocessor initialized
[2024-11-03 01:54:17,188 INFO  L184        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:54:17" (1/1) ...
[2024-11-03 01:54:17,188 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:54:17" (1/1) ...
[2024-11-03 01:54:17,197 INFO  L184        PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:54:17" (1/1) ...
[2024-11-03 01:54:17,222 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 01:54:17,223 INFO  L184        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:54:17" (1/1) ...
[2024-11-03 01:54:17,223 INFO  L184        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:54:17" (1/1) ...
[2024-11-03 01:54:17,232 INFO  L184        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:54:17" (1/1) ...
[2024-11-03 01:54:17,235 INFO  L184        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:54:17" (1/1) ...
[2024-11-03 01:54:17,238 INFO  L184        PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:54:17" (1/1) ...
[2024-11-03 01:54:17,239 INFO  L184        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:54:17" (1/1) ...
[2024-11-03 01:54:17,244 INFO  L131        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2024-11-03 01:54:17,246 INFO  L112        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2024-11-03 01:54:17,246 INFO  L270        PluginConnector]: Initializing RCFGBuilder...
[2024-11-03 01:54:17,246 INFO  L274        PluginConnector]: RCFGBuilder initialized
[2024-11-03 01:54:17,247 INFO  L184        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:54:17" (1/1) ...
[2024-11-03 01:54:17,255 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2024-11-03 01:54:17,268 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2024-11-03 01:54:17,285 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 01:54:17,288 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 01:54:17,318 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2024-11-03 01:54:17,318 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0
[2024-11-03 01:54:17,318 INFO  L130     BoogieDeclarations]: Found specification of procedure assume_abort_if_not
[2024-11-03 01:54:17,318 INFO  L138     BoogieDeclarations]: Found implementation of procedure assume_abort_if_not
[2024-11-03 01:54:17,318 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2024-11-03 01:54:17,320 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2024-11-03 01:54:17,426 INFO  L238             CfgBuilder]: Building ICFG
[2024-11-03 01:54:17,429 INFO  L264             CfgBuilder]: Building CFG for each procedure with an implementation
[2024-11-03 01:54:40,432 INFO  L?                        ?]: Removed 12 outVars from TransFormulas that were not future-live.
[2024-11-03 01:54:40,433 INFO  L287             CfgBuilder]: Performing block encoding
[2024-11-03 01:54:40,445 INFO  L311             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2024-11-03 01:54:40,445 INFO  L316             CfgBuilder]: Removed 1 assume(true) statements.
[2024-11-03 01:54:40,446 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 01:54:40 BoogieIcfgContainer
[2024-11-03 01:54:40,446 INFO  L131        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2024-11-03 01:54:40,448 INFO  L112        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2024-11-03 01:54:40,448 INFO  L270        PluginConnector]: Initializing TraceAbstraction...
[2024-11-03 01:54:40,452 INFO  L274        PluginConnector]: TraceAbstraction initialized
[2024-11-03 01:54:40,452 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 01:54:16" (1/3) ...
[2024-11-03 01:54:40,453 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@390e4851 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 01:54:40, skipping insertion in model container
[2024-11-03 01:54:40,453 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:54:17" (2/3) ...
[2024-11-03 01:54:40,453 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@390e4851 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 01:54:40, skipping insertion in model container
[2024-11-03 01:54:40,453 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 01:54:40" (3/3) ...
[2024-11-03 01:54:40,455 INFO  L112   eAbstractionObserver]: Analyzing ICFG hardness_operatoramount_amount50_file-48.i
[2024-11-03 01:54:40,470 INFO  L214   ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2024-11-03 01:54:40,471 INFO  L154   ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2024-11-03 01:54:40,527 INFO  L332      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2024-11-03 01:54:40,534 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;@60bcd9e2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2024-11-03 01:54:40,534 INFO  L334      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2024-11-03 01:54:40,539 INFO  L276                IsEmpty]: Start isEmpty. Operand  has 65 states, 42 states have (on average 1.4047619047619047) internal successors, (59), 43 states have internal predecessors, (59), 20 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20)
[2024-11-03 01:54:40,553 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 130
[2024-11-03 01:54:40,554 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-03 01:54:40,555 INFO  L215           NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:54:40,577 INFO  L396      AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-03 01:54:40,582 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-03 01:54:40,583 INFO  L85        PathProgramCache]: Analyzing trace with hash 574216381, now seen corresponding path program 1 times
[2024-11-03 01:54:40,598 INFO  L118   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2024-11-03 01:54:40,599 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [546521050]
[2024-11-03 01:54:40,599 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-03 01:54:40,606 INFO  L173          SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt
[2024-11-03 01:54:40,606 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4
[2024-11-03 01:54:40,609 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 01:54:40,611 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 01:54:41,089 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-03 01:54:41,099 INFO  L255         TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 1 conjuncts are in the unsatisfiable core
[2024-11-03 01:54:41,107 INFO  L278         TraceCheckSpWp]: Computing forward predicates...
[2024-11-03 01:54:41,160 INFO  L134       CoverageAnalysis]: Checked inductivity of 760 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 722 trivial. 0 not checked.
[2024-11-03 01:54:41,160 INFO  L311         TraceCheckSpWp]: Computing backward predicates...
[2024-11-03 01:54:42,824 INFO  L134       CoverageAnalysis]: Checked inductivity of 760 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 722 trivial. 0 not checked.
[2024-11-03 01:54:42,825 INFO  L136   FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2024-11-03 01:54:42,825 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [546521050]
[2024-11-03 01:54:42,825 INFO  L158   FreeRefinementEngine]: IpTcStrategyModulePreferences [546521050] provided 2 perfect and 0 imperfect interpolant sequences
[2024-11-03 01:54:42,826 INFO  L185   FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences.
[2024-11-03 01:54:42,826 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2
[2024-11-03 01:54:42,827 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1691313719]
[2024-11-03 01:54:42,828 INFO  L85    oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton
[2024-11-03 01:54:42,832 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 2 states
[2024-11-03 01:54:42,832 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2024-11-03 01:54:42,850 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants.
[2024-11-03 01:54:42,851 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2024-11-03 01:54:42,853 INFO  L87              Difference]: Start difference. First operand  has 65 states, 42 states have (on average 1.4047619047619047) internal successors, (59), 43 states have internal predecessors, (59), 20 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) Second operand  has 2 states, 2 states have (on average 17.0) internal successors, (34), 2 states have internal predecessors, (34), 1 states have call successors, (20), 1 states have call predecessors, (20), 2 states have return successors, (20), 2 states have call predecessors, (20), 1 states have call successors, (20)
[2024-11-03 01:54:42,873 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-03 01:54:42,874 INFO  L93              Difference]: Finished difference Result 122 states and 210 transitions.
[2024-11-03 01:54:42,874 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. 
[2024-11-03 01:54:42,876 INFO  L78                 Accepts]: Start accepts. Automaton has  has 2 states, 2 states have (on average 17.0) internal successors, (34), 2 states have internal predecessors, (34), 1 states have call successors, (20), 1 states have call predecessors, (20), 2 states have return successors, (20), 2 states have call predecessors, (20), 1 states have call successors, (20) Word has length 129
[2024-11-03 01:54:42,876 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-03 01:54:42,883 INFO  L225             Difference]: With dead ends: 122
[2024-11-03 01:54:42,883 INFO  L226             Difference]: Without dead ends: 60
[2024-11-03 01:54:42,886 INFO  L431           NwaCegarLoop]: 0 DeclaredPredicates, 256 GetRequests, 256 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 01:54:42,890 INFO  L432           NwaCegarLoop]: 89 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, 89 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 01:54:42,892 INFO  L433           NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 89 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2024-11-03 01:54:42,904 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 60 states.
[2024-11-03 01:54:42,925 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60.
[2024-11-03 01:54:42,926 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 60 states, 38 states have (on average 1.2894736842105263) internal successors, (49), 38 states have internal predecessors, (49), 20 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20)
[2024-11-03 01:54:42,928 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 89 transitions.
[2024-11-03 01:54:42,930 INFO  L78                 Accepts]: Start accepts. Automaton has 60 states and 89 transitions. Word has length 129
[2024-11-03 01:54:42,930 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-03 01:54:42,931 INFO  L471      AbstractCegarLoop]: Abstraction has 60 states and 89 transitions.
[2024-11-03 01:54:42,931 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 2 states, 2 states have (on average 17.0) internal successors, (34), 2 states have internal predecessors, (34), 1 states have call successors, (20), 1 states have call predecessors, (20), 2 states have return successors, (20), 2 states have call predecessors, (20), 1 states have call successors, (20)
[2024-11-03 01:54:42,931 INFO  L276                IsEmpty]: Start isEmpty. Operand 60 states and 89 transitions.
[2024-11-03 01:54:42,934 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 130
[2024-11-03 01:54:42,934 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-03 01:54:42,935 INFO  L215           NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:54:42,942 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 01:54:43,136 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 01:54:43,137 INFO  L396      AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-03 01:54:43,137 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-03 01:54:43,137 INFO  L85        PathProgramCache]: Analyzing trace with hash 995156933, now seen corresponding path program 1 times
[2024-11-03 01:54:43,137 INFO  L118   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2024-11-03 01:54:43,138 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [896698532]
[2024-11-03 01:54:43,138 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-03 01:54:43,138 INFO  L173          SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt
[2024-11-03 01:54:43,138 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4
[2024-11-03 01:54:43,142 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 01:54:43,144 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 01:54:43,545 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-03 01:54:43,555 INFO  L255         TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 2 conjuncts are in the unsatisfiable core
[2024-11-03 01:54:43,563 INFO  L278         TraceCheckSpWp]: Computing forward predicates...
[2024-11-03 01:54:43,797 INFO  L134       CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked.
[2024-11-03 01:54:43,798 INFO  L311         TraceCheckSpWp]: Computing backward predicates...
[2024-11-03 01:54:45,429 INFO  L134       CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked.
[2024-11-03 01:54:45,429 INFO  L136   FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2024-11-03 01:54:45,429 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [896698532]
[2024-11-03 01:54:45,430 INFO  L158   FreeRefinementEngine]: IpTcStrategyModulePreferences [896698532] provided 2 perfect and 0 imperfect interpolant sequences
[2024-11-03 01:54:45,430 INFO  L185   FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences.
[2024-11-03 01:54:45,430 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3
[2024-11-03 01:54:45,430 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [593528017]
[2024-11-03 01:54:45,430 INFO  L85    oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton
[2024-11-03 01:54:45,432 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2024-11-03 01:54:45,432 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2024-11-03 01:54:45,436 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2024-11-03 01:54:45,436 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2024-11-03 01:54:45,437 INFO  L87              Difference]: Start difference. First operand 60 states and 89 transitions. Second operand  has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20)
[2024-11-03 01:54:50,060 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.42s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers []
[2024-11-03 01:54:54,679 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.42s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers []
[2024-11-03 01:54:54,876 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-03 01:54:54,877 INFO  L93              Difference]: Finished difference Result 135 states and 201 transitions.
[2024-11-03 01:54:54,878 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2024-11-03 01:54:54,878 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 129
[2024-11-03 01:54:54,879 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-03 01:54:54,881 INFO  L225             Difference]: With dead ends: 135
[2024-11-03 01:54:54,881 INFO  L226             Difference]: Without dead ends: 78
[2024-11-03 01:54:54,881 INFO  L431           NwaCegarLoop]: 0 DeclaredPredicates, 256 GetRequests, 255 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 01:54:54,882 INFO  L432           NwaCegarLoop]: 89 mSDtfsCounter, 20 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 3 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 167 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.4s IncrementalHoareTripleChecker+Time
[2024-11-03 01:54:54,883 INFO  L433           NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 167 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 10 Invalid, 2 Unknown, 0 Unchecked, 9.4s Time]
[2024-11-03 01:54:54,887 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 78 states.
[2024-11-03 01:54:54,895 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 67.
[2024-11-03 01:54:54,896 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 67 states, 45 states have (on average 1.3111111111111111) internal successors, (59), 45 states have internal predecessors, (59), 20 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20)
[2024-11-03 01:54:54,897 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 99 transitions.
[2024-11-03 01:54:54,898 INFO  L78                 Accepts]: Start accepts. Automaton has 67 states and 99 transitions. Word has length 129
[2024-11-03 01:54:54,899 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-03 01:54:54,899 INFO  L471      AbstractCegarLoop]: Abstraction has 67 states and 99 transitions.
[2024-11-03 01:54:54,899 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20)
[2024-11-03 01:54:54,900 INFO  L276                IsEmpty]: Start isEmpty. Operand 67 states and 99 transitions.
[2024-11-03 01:54:54,901 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 130
[2024-11-03 01:54:54,901 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-03 01:54:54,902 INFO  L215           NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:54:54,908 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 01:54:55,102 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 01:54:55,103 INFO  L396      AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-03 01:54:55,103 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-03 01:54:55,103 INFO  L85        PathProgramCache]: Analyzing trace with hash 1052415235, now seen corresponding path program 1 times
[2024-11-03 01:54:55,103 INFO  L118   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2024-11-03 01:54:55,104 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [201980087]
[2024-11-03 01:54:55,104 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-03 01:54:55,104 INFO  L173          SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt
[2024-11-03 01:54:55,104 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4
[2024-11-03 01:54:55,106 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 01:54:55,106 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 01:54:57,496 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-03 01:54:57,507 INFO  L255         TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 2 conjuncts are in the unsatisfiable core
[2024-11-03 01:54:57,511 INFO  L278         TraceCheckSpWp]: Computing forward predicates...
[2024-11-03 01:55:02,693 INFO  L134       CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked.
[2024-11-03 01:55:02,693 INFO  L311         TraceCheckSpWp]: Computing backward predicates...
[2024-11-03 01:55:06,331 INFO  L134       CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked.
[2024-11-03 01:55:06,331 INFO  L136   FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2024-11-03 01:55:06,331 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [201980087]
[2024-11-03 01:55:06,332 INFO  L158   FreeRefinementEngine]: IpTcStrategyModulePreferences [201980087] provided 2 perfect and 0 imperfect interpolant sequences
[2024-11-03 01:55:06,332 INFO  L185   FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences.
[2024-11-03 01:55:06,332 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 3] imperfect sequences [] total 4
[2024-11-03 01:55:06,332 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1046910904]
[2024-11-03 01:55:06,332 INFO  L85    oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton
[2024-11-03 01:55:06,333 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2024-11-03 01:55:06,333 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2024-11-03 01:55:06,334 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2024-11-03 01:55:06,334 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2024-11-03 01:55:06,334 INFO  L87              Difference]: Start difference. First operand 67 states and 99 transitions. Second operand  has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 2 states have call successors, (40), 2 states have call predecessors, (40), 2 states have return successors, (40), 2 states have call predecessors, (40), 2 states have call successors, (40)
[2024-11-03 01:55:10,796 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.41s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers []
[2024-11-03 01:55:15,465 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.43s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [1]
[2024-11-03 01:55:19,493 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.03s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers []
[2024-11-03 01:55:24,135 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.43s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [1]
[2024-11-03 01:55:28,147 WARN  L539   Checker$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 [1]
[2024-11-03 01:55:32,856 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-03 01:55:32,856 INFO  L93              Difference]: Finished difference Result 259 states and 387 transitions.
[2024-11-03 01:55:32,856 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2024-11-03 01:55:32,857 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 2 states have call successors, (40), 2 states have call predecessors, (40), 2 states have return successors, (40), 2 states have call predecessors, (40), 2 states have call successors, (40) Word has length 129
[2024-11-03 01:55:32,857 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-03 01:55:32,860 INFO  L225             Difference]: With dead ends: 259
[2024-11-03 01:55:32,860 INFO  L226             Difference]: Without dead ends: 195
[2024-11-03 01:55:32,861 INFO  L431           NwaCegarLoop]: 0 DeclaredPredicates, 256 GetRequests, 254 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2024-11-03 01:55:32,862 INFO  L432           NwaCegarLoop]: 87 mSDtfsCounter, 80 mSDsluCounter, 120 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 2 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 25.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 207 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 26.5s IncrementalHoareTripleChecker+Time
[2024-11-03 01:55:32,862 INFO  L433           NwaCegarLoop]: SdHoareTripleChecker [80 Valid, 207 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 51 Invalid, 5 Unknown, 0 Unchecked, 26.5s Time]
[2024-11-03 01:55:32,863 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 195 states.
[2024-11-03 01:55:32,890 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 191.
[2024-11-03 01:55:32,891 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 191 states, 127 states have (on average 1.3070866141732282) internal successors, (166), 127 states have internal predecessors, (166), 60 states have call successors, (60), 3 states have call predecessors, (60), 3 states have return successors, (60), 60 states have call predecessors, (60), 60 states have call successors, (60)
[2024-11-03 01:55:32,894 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 286 transitions.
[2024-11-03 01:55:32,894 INFO  L78                 Accepts]: Start accepts. Automaton has 191 states and 286 transitions. Word has length 129
[2024-11-03 01:55:32,895 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-03 01:55:32,895 INFO  L471      AbstractCegarLoop]: Abstraction has 191 states and 286 transitions.
[2024-11-03 01:55:32,895 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 2 states have call successors, (40), 2 states have call predecessors, (40), 2 states have return successors, (40), 2 states have call predecessors, (40), 2 states have call successors, (40)
[2024-11-03 01:55:32,895 INFO  L276                IsEmpty]: Start isEmpty. Operand 191 states and 286 transitions.
[2024-11-03 01:55:32,897 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 131
[2024-11-03 01:55:32,897 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-03 01:55:32,897 INFO  L215           NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:55:32,930 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (4)] Forceful destruction successful, exit code 0
[2024-11-03 01:55:33,098 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 01:55:33,099 INFO  L396      AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-03 01:55:33,099 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-03 01:55:33,099 INFO  L85        PathProgramCache]: Analyzing trace with hash -1679517222, now seen corresponding path program 1 times
[2024-11-03 01:55:33,099 INFO  L118   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2024-11-03 01:55:33,099 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1508331298]
[2024-11-03 01:55:33,100 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-03 01:55:33,100 INFO  L173          SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt
[2024-11-03 01:55:33,100 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4
[2024-11-03 01:55:33,102 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 01:55:33,104 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 01:55:36,960 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-03 01:55:36,976 INFO  L255         TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 22 conjuncts are in the unsatisfiable core
[2024-11-03 01:55:36,984 INFO  L278         TraceCheckSpWp]: Computing forward predicates...