/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 --cacsl2boogietranslator.allow.undefined.functions true --traceabstraction.trace.refinement.strategy FOX -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf -i ../../../trunk/examples/svcomp/hardness-nfm22/hardness_floatingpointinfluence_no-floats_file-69.i


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


This is Ultimate 0.2.5-dev-17387ad-m
[2024-11-06 07:57:49,065 INFO  L188        SettingsManager]: Resetting all preferences to default values...
[2024-11-06 07:57:49,125 INFO  L114        SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf
[2024-11-06 07:57:49,128 WARN  L101        SettingsManager]: Preference file contains the following unknown settings:
[2024-11-06 07:57:49,128 WARN  L103        SettingsManager]:   * de.uni_freiburg.informatik.ultimate.core.Log level for class
[2024-11-06 07:57:49,152 INFO  L130        SettingsManager]: Preferences different from defaults after loading the file:
[2024-11-06 07:57:49,153 INFO  L151        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2024-11-06 07:57:49,153 INFO  L153        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2024-11-06 07:57:49,154 INFO  L151        SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults:
[2024-11-06 07:57:49,154 INFO  L153        SettingsManager]:  * Use memory slicer=true
[2024-11-06 07:57:49,154 INFO  L151        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2024-11-06 07:57:49,155 INFO  L153        SettingsManager]:  * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2024-11-06 07:57:49,155 INFO  L151        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2024-11-06 07:57:49,157 INFO  L153        SettingsManager]:  * Create parallel compositions if possible=false
[2024-11-06 07:57:49,157 INFO  L153        SettingsManager]:  * Use SBE=true
[2024-11-06 07:57:49,158 INFO  L151        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2024-11-06 07:57:49,158 INFO  L153        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2024-11-06 07:57:49,158 INFO  L153        SettingsManager]:  * sizeof long=4
[2024-11-06 07:57:49,158 INFO  L153        SettingsManager]:  * sizeof POINTER=4
[2024-11-06 07:57:49,159 INFO  L153        SettingsManager]:  * Check division by zero=IGNORE
[2024-11-06 07:57:49,159 INFO  L153        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2024-11-06 07:57:49,164 INFO  L153        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2024-11-06 07:57:49,164 INFO  L153        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2024-11-06 07:57:49,164 INFO  L153        SettingsManager]:  * Adapt memory model on pointer casts if necessary=true
[2024-11-06 07:57:49,164 INFO  L153        SettingsManager]:  * Use bitvectors instead of ints=true
[2024-11-06 07:57:49,164 INFO  L153        SettingsManager]:  * Allow undefined functions=false
[2024-11-06 07:57:49,165 INFO  L153        SettingsManager]:  * Memory model=HoenickeLindenmann_4ByteResolution
[2024-11-06 07:57:49,165 INFO  L153        SettingsManager]:  * sizeof long double=12
[2024-11-06 07:57:49,165 INFO  L153        SettingsManager]:  * Check if freed pointer was valid=false
[2024-11-06 07:57:49,165 INFO  L153        SettingsManager]:  * Use constant arrays=true
[2024-11-06 07:57:49,166 INFO  L151        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2024-11-06 07:57:49,166 INFO  L153        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2024-11-06 07:57:49,166 INFO  L153        SettingsManager]:  * Only consider context switches at boundaries of atomic blocks=true
[2024-11-06 07:57:49,166 INFO  L153        SettingsManager]:  * SMT solver=External_DefaultMode
[2024-11-06 07:57:49,166 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2024-11-06 07:57:49,167 INFO  L151        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2024-11-06 07:57:49,167 INFO  L153        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2024-11-06 07:57:49,167 INFO  L153        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopHeads
[2024-11-06 07:57:49,167 INFO  L153        SettingsManager]:  * Trace refinement strategy=WOLF
[2024-11-06 07:57:49,168 INFO  L153        SettingsManager]:  * Command for external solver=cvc4 --incremental --print-success --lang smt
[2024-11-06 07:57:49,168 INFO  L153        SettingsManager]:  * Apply one-shot large block encoding in concurrent analysis=false
[2024-11-06 07:57:49,169 INFO  L153        SettingsManager]:  * Automaton type used in concurrency analysis=PETRI_NET
[2024-11-06 07:57:49,169 INFO  L153        SettingsManager]:  * Order on configurations for Petri net unfoldings=DBO
[2024-11-06 07:57:49,170 INFO  L153        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2024-11-06 07:57:49,170 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$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Allow undefined functions -> true
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FOX
[2024-11-06 07:57:49,401 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2024-11-06 07:57:49,420 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2024-11-06 07:57:49,421 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2024-11-06 07:57:49,422 INFO  L270        PluginConnector]: Initializing CDTParser...
[2024-11-06 07:57:49,423 INFO  L274        PluginConnector]: CDTParser initialized
[2024-11-06 07:57:49,423 INFO  L431   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_floatingpointinfluence_no-floats_file-69.i
[2024-11-06 07:57:51,082 INFO  L533              CDTParser]: Created temporary CDT project at NULL
[2024-11-06 07:57:51,232 INFO  L384              CDTParser]: Found 1 translation units.
[2024-11-06 07:57:51,233 INFO  L180              CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_floatingpointinfluence_no-floats_file-69.i
[2024-11-06 07:57:51,239 INFO  L427              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ffaeeecc0/959aa7b795ed4f998ff66818d249943f/FLAGf97a75d3b
[2024-11-06 07:57:51,250 INFO  L435              CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ffaeeecc0/959aa7b795ed4f998ff66818d249943f
[2024-11-06 07:57:51,252 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2024-11-06 07:57:51,253 INFO  L133        ToolchainWalker]: Walking toolchain with 5 elements.
[2024-11-06 07:57:51,254 INFO  L112        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2024-11-06 07:57:51,254 INFO  L270        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2024-11-06 07:57:51,258 INFO  L274        PluginConnector]: CACSL2BoogieTranslator initialized
[2024-11-06 07:57:51,259 INFO  L184        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 07:57:51" (1/1) ...
[2024-11-06 07:57:51,260 INFO  L204        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4b818701 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:57:51, skipping insertion in model container
[2024-11-06 07:57:51,260 INFO  L184        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 07:57:51" (1/1) ...
[2024-11-06 07:57:51,282 INFO  L175         MainTranslator]: Built tables and reachable declarations
[2024-11-06 07:57:51,433 WARN  L250   ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_floatingpointinfluence_no-floats_file-69.i[916,929]
[2024-11-06 07:57:51,481 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2024-11-06 07:57:51,493 INFO  L200         MainTranslator]: Completed pre-run
[2024-11-06 07:57:51,502 WARN  L250   ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_floatingpointinfluence_no-floats_file-69.i[916,929]
[2024-11-06 07:57:51,518 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2024-11-06 07:57:51,533 INFO  L204         MainTranslator]: Completed translation
[2024-11-06 07:57:51,534 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:57:51 WrapperNode
[2024-11-06 07:57:51,534 INFO  L131        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2024-11-06 07:57:51,535 INFO  L112        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2024-11-06 07:57:51,535 INFO  L270        PluginConnector]: Initializing Boogie Procedure Inliner...
[2024-11-06 07:57:51,535 INFO  L274        PluginConnector]: Boogie Procedure Inliner initialized
[2024-11-06 07:57:51,539 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:57:51" (1/1) ...
[2024-11-06 07:57:51,547 INFO  L184        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:57:51" (1/1) ...
[2024-11-06 07:57:51,564 INFO  L138                Inliner]: procedures = 27, calls = 29, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 107
[2024-11-06 07:57:51,565 INFO  L131        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2024-11-06 07:57:51,566 INFO  L112        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2024-11-06 07:57:51,566 INFO  L270        PluginConnector]: Initializing Boogie Preprocessor...
[2024-11-06 07:57:51,566 INFO  L274        PluginConnector]: Boogie Preprocessor initialized
[2024-11-06 07:57:51,574 INFO  L184        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:57:51" (1/1) ...
[2024-11-06 07:57:51,574 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:57:51" (1/1) ...
[2024-11-06 07:57:51,577 INFO  L184        PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:57:51" (1/1) ...
[2024-11-06 07:57:51,594 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].
[2024-11-06 07:57:51,595 INFO  L184        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:57:51" (1/1) ...
[2024-11-06 07:57:51,595 INFO  L184        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:57:51" (1/1) ...
[2024-11-06 07:57:51,604 INFO  L184        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:57:51" (1/1) ...
[2024-11-06 07:57:51,607 INFO  L184        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:57:51" (1/1) ...
[2024-11-06 07:57:51,608 INFO  L184        PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:57:51" (1/1) ...
[2024-11-06 07:57:51,609 INFO  L184        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:57:51" (1/1) ...
[2024-11-06 07:57:51,611 INFO  L131        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2024-11-06 07:57:51,612 INFO  L112        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2024-11-06 07:57:51,612 INFO  L270        PluginConnector]: Initializing RCFGBuilder...
[2024-11-06 07:57:51,612 INFO  L274        PluginConnector]: RCFGBuilder initialized
[2024-11-06 07:57:51,613 INFO  L184        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:57:51" (1/1) ...
[2024-11-06 07:57:51,617 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2024-11-06 07:57:51,627 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2024-11-06 07:57:51,643 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)
[2024-11-06 07:57:51,645 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
[2024-11-06 07:57:51,668 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2024-11-06 07:57:51,668 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0
[2024-11-06 07:57:51,668 INFO  L130     BoogieDeclarations]: Found specification of procedure assume_abort_if_not
[2024-11-06 07:57:51,668 INFO  L138     BoogieDeclarations]: Found implementation of procedure assume_abort_if_not
[2024-11-06 07:57:51,668 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2024-11-06 07:57:51,668 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2024-11-06 07:57:51,749 INFO  L238             CfgBuilder]: Building ICFG
[2024-11-06 07:57:51,751 INFO  L264             CfgBuilder]: Building CFG for each procedure with an implementation
[2024-11-06 07:57:51,991 INFO  L?                        ?]: Removed 16 outVars from TransFormulas that were not future-live.
[2024-11-06 07:57:51,991 INFO  L287             CfgBuilder]: Performing block encoding
[2024-11-06 07:57:52,004 INFO  L311             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2024-11-06 07:57:52,005 INFO  L316             CfgBuilder]: Removed 1 assume(true) statements.
[2024-11-06 07:57:52,005 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 07:57:52 BoogieIcfgContainer
[2024-11-06 07:57:52,005 INFO  L131        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2024-11-06 07:57:52,007 INFO  L112        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2024-11-06 07:57:52,007 INFO  L270        PluginConnector]: Initializing TraceAbstraction...
[2024-11-06 07:57:52,010 INFO  L274        PluginConnector]: TraceAbstraction initialized
[2024-11-06 07:57:52,010 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 07:57:51" (1/3) ...
[2024-11-06 07:57:52,011 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@272d9f81 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 07:57:52, skipping insertion in model container
[2024-11-06 07:57:52,011 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:57:51" (2/3) ...
[2024-11-06 07:57:52,011 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@272d9f81 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 07:57:52, skipping insertion in model container
[2024-11-06 07:57:52,011 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 07:57:52" (3/3) ...
[2024-11-06 07:57:52,012 INFO  L112   eAbstractionObserver]: Analyzing ICFG hardness_floatingpointinfluence_no-floats_file-69.i
[2024-11-06 07:57:52,025 INFO  L214   ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2024-11-06 07:57:52,026 INFO  L154   ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2024-11-06 07:57:52,069 INFO  L332      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2024-11-06 07:57:52,074 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;@175d04d7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2024-11-06 07:57:52,074 INFO  L334      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2024-11-06 07:57:52,078 INFO  L276                IsEmpty]: Start isEmpty. Operand  has 53 states, 34 states have (on average 1.3823529411764706) internal successors, (47), 35 states have internal predecessors, (47), 16 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16)
[2024-11-06 07:57:52,085 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 103
[2024-11-06 07:57:52,085 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-06 07:57:52,086 INFO  L215           NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-06 07:57:52,086 INFO  L396      AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-06 07:57:52,090 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-06 07:57:52,090 INFO  L85        PathProgramCache]: Analyzing trace with hash 494546619, now seen corresponding path program 1 times
[2024-11-06 07:57:52,099 INFO  L118   FreeRefinementEngine]: Executing refinement strategy FOX
[2024-11-06 07:57:52,099 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1850587737]
[2024-11-06 07:57:52,099 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-06 07:57:52,099 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-06 07:57:52,100 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2024-11-06 07:57:52,101 INFO  L229       MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-06 07:57:52,103 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process
[2024-11-06 07:57:52,218 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-06 07:57:52,223 INFO  L255         TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 1 conjuncts are in the unsatisfiable core
[2024-11-06 07:57:52,230 INFO  L278         TraceCheckSpWp]: Computing forward predicates...
[2024-11-06 07:57:52,260 INFO  L134       CoverageAnalysis]: Checked inductivity of 480 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 450 trivial. 0 not checked.
[2024-11-06 07:57:52,261 INFO  L307         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2024-11-06 07:57:52,261 INFO  L136   FreeRefinementEngine]: Strategy FOX found an infeasible trace
[2024-11-06 07:57:52,261 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1850587737]
[2024-11-06 07:57:52,262 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1850587737] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-06 07:57:52,262 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-06 07:57:52,262 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2024-11-06 07:57:52,263 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1796030075]
[2024-11-06 07:57:52,264 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-06 07:57:52,267 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 2 states
[2024-11-06 07:57:52,267 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX
[2024-11-06 07:57:52,335 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants.
[2024-11-06 07:57:52,336 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2024-11-06 07:57:52,338 INFO  L87              Difference]: Start difference. First operand  has 53 states, 34 states have (on average 1.3823529411764706) internal successors, (47), 35 states have internal predecessors, (47), 16 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) Second operand  has 2 states, 2 states have (on average 13.5) internal successors, (27), 2 states have internal predecessors, (27), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 2 states have call successors, (16)
[2024-11-06 07:57:52,367 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-06 07:57:52,367 INFO  L93              Difference]: Finished difference Result 99 states and 168 transitions.
[2024-11-06 07:57:52,368 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. 
[2024-11-06 07:57:52,369 INFO  L78                 Accepts]: Start accepts. Automaton has  has 2 states, 2 states have (on average 13.5) internal successors, (27), 2 states have internal predecessors, (27), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 2 states have call successors, (16) Word has length 102
[2024-11-06 07:57:52,370 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-06 07:57:52,377 INFO  L225             Difference]: With dead ends: 99
[2024-11-06 07:57:52,378 INFO  L226             Difference]: Without dead ends: 49
[2024-11-06 07:57:52,381 INFO  L431           NwaCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2024-11-06 07:57:52,387 INFO  L432           NwaCegarLoop]: 72 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, 72 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
[2024-11-06 07:57:52,388 INFO  L433           NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2024-11-06 07:57:52,403 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 49 states.
[2024-11-06 07:57:52,422 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49.
[2024-11-06 07:57:52,423 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 49 states, 31 states have (on average 1.2903225806451613) internal successors, (40), 31 states have internal predecessors, (40), 16 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16)
[2024-11-06 07:57:52,425 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 72 transitions.
[2024-11-06 07:57:52,426 INFO  L78                 Accepts]: Start accepts. Automaton has 49 states and 72 transitions. Word has length 102
[2024-11-06 07:57:52,426 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-06 07:57:52,426 INFO  L471      AbstractCegarLoop]: Abstraction has 49 states and 72 transitions.
[2024-11-06 07:57:52,427 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 2 states, 2 states have (on average 13.5) internal successors, (27), 2 states have internal predecessors, (27), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 2 states have call successors, (16)
[2024-11-06 07:57:52,427 INFO  L276                IsEmpty]: Start isEmpty. Operand 49 states and 72 transitions.
[2024-11-06 07:57:52,428 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 103
[2024-11-06 07:57:52,429 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-06 07:57:52,429 INFO  L215           NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-06 07:57:52,452 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0
[2024-11-06 07:57:52,633 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-06 07:57:52,634 INFO  L396      AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-06 07:57:52,635 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-06 07:57:52,635 INFO  L85        PathProgramCache]: Analyzing trace with hash -577696069, now seen corresponding path program 1 times
[2024-11-06 07:57:52,636 INFO  L118   FreeRefinementEngine]: Executing refinement strategy FOX
[2024-11-06 07:57:52,636 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [903124741]
[2024-11-06 07:57:52,636 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-06 07:57:52,636 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-06 07:57:52,636 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2024-11-06 07:57:52,640 INFO  L229       MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-06 07:57:52,641 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process
[2024-11-06 07:57:52,748 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-06 07:57:52,756 INFO  L255         TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 13 conjuncts are in the unsatisfiable core
[2024-11-06 07:57:52,768 INFO  L278         TraceCheckSpWp]: Computing forward predicates...
[2024-11-06 07:58:04,745 INFO  L134       CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 435 trivial. 0 not checked.
[2024-11-06 07:58:04,746 INFO  L311         TraceCheckSpWp]: Computing backward predicates...
[2024-11-06 07:58:18,706 INFO  L134       CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked.
[2024-11-06 07:58:18,706 INFO  L136   FreeRefinementEngine]: Strategy FOX found an infeasible trace
[2024-11-06 07:58:18,707 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [903124741]
[2024-11-06 07:58:18,707 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [903124741] provided 1 perfect and 1 imperfect interpolant sequences
[2024-11-06 07:58:18,707 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2024-11-06 07:58:18,707 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [10] total 16
[2024-11-06 07:58:18,707 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1061640361]
[2024-11-06 07:58:18,708 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-06 07:58:18,709 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 8 states
[2024-11-06 07:58:18,709 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX
[2024-11-06 07:58:18,710 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2024-11-06 07:58:18,710 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=190, Unknown=0, NotChecked=0, Total=240
[2024-11-06 07:58:18,711 INFO  L87              Difference]: Start difference. First operand 49 states and 72 transitions. Second operand  has 8 states, 8 states have (on average 3.125) internal successors, (25), 8 states have internal predecessors, (25), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16)
[2024-11-06 07:58:25,555 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-06 07:58:25,555 INFO  L93              Difference]: Finished difference Result 76 states and 107 transitions.
[2024-11-06 07:58:25,564 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. 
[2024-11-06 07:58:25,565 INFO  L78                 Accepts]: Start accepts. Automaton has  has 8 states, 8 states have (on average 3.125) internal successors, (25), 8 states have internal predecessors, (25), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 102
[2024-11-06 07:58:25,566 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-06 07:58:25,567 INFO  L225             Difference]: With dead ends: 76
[2024-11-06 07:58:25,567 INFO  L226             Difference]: Without dead ends: 74
[2024-11-06 07:58:25,567 INFO  L431           NwaCegarLoop]: 0 DeclaredPredicates, 205 GetRequests, 188 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 9.7s TimeCoverageRelationStatistics Valid=75, Invalid=267, Unknown=0, NotChecked=0, Total=342
[2024-11-06 07:58:25,573 INFO  L432           NwaCegarLoop]: 61 mSDtfsCounter, 44 mSDsluCounter, 208 mSDsCounter, 0 mSdLazyCounter, 121 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 269 SdHoareTripleChecker+Invalid, 126 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 121 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time
[2024-11-06 07:58:25,574 INFO  L433           NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 269 Invalid, 126 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 121 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time]
[2024-11-06 07:58:25,574 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 74 states.
[2024-11-06 07:58:25,589 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 58.
[2024-11-06 07:58:25,590 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 58 states, 40 states have (on average 1.325) internal successors, (53), 40 states have internal predecessors, (53), 16 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16)
[2024-11-06 07:58:25,591 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 85 transitions.
[2024-11-06 07:58:25,591 INFO  L78                 Accepts]: Start accepts. Automaton has 58 states and 85 transitions. Word has length 102
[2024-11-06 07:58:25,598 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-06 07:58:25,598 INFO  L471      AbstractCegarLoop]: Abstraction has 58 states and 85 transitions.
[2024-11-06 07:58:25,599 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 8 states, 8 states have (on average 3.125) internal successors, (25), 8 states have internal predecessors, (25), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16)
[2024-11-06 07:58:25,599 INFO  L276                IsEmpty]: Start isEmpty. Operand 58 states and 85 transitions.
[2024-11-06 07:58:25,600 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 104
[2024-11-06 07:58:25,600 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-06 07:58:25,600 INFO  L215           NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-06 07:58:25,644 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0
[2024-11-06 07:58:25,800 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-06 07:58:25,801 INFO  L396      AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-06 07:58:25,802 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-06 07:58:25,802 INFO  L85        PathProgramCache]: Analyzing trace with hash 1877521400, now seen corresponding path program 1 times
[2024-11-06 07:58:25,802 INFO  L118   FreeRefinementEngine]: Executing refinement strategy FOX
[2024-11-06 07:58:25,802 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1834640947]
[2024-11-06 07:58:25,802 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-06 07:58:25,803 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-06 07:58:25,803 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2024-11-06 07:58:25,805 INFO  L229       MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-06 07:58:25,806 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process
[2024-11-06 07:58:25,874 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-06 07:58:25,891 INFO  L255         TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 18 conjuncts are in the unsatisfiable core
[2024-11-06 07:58:25,910 INFO  L278         TraceCheckSpWp]: Computing forward predicates...
[2024-11-06 07:58:35,064 INFO  L134       CoverageAnalysis]: Checked inductivity of 480 backedges. 243 proven. 75 refuted. 0 times theorem prover too weak. 162 trivial. 0 not checked.
[2024-11-06 07:58:35,065 INFO  L311         TraceCheckSpWp]: Computing backward predicates...
[2024-11-06 07:58:40,286 INFO  L134       CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked.
[2024-11-06 07:58:40,286 INFO  L136   FreeRefinementEngine]: Strategy FOX found an infeasible trace
[2024-11-06 07:58:40,286 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1834640947]
[2024-11-06 07:58:40,287 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1834640947] provided 1 perfect and 1 imperfect interpolant sequences
[2024-11-06 07:58:40,287 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2024-11-06 07:58:40,287 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [13] total 18
[2024-11-06 07:58:40,287 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [763662901]
[2024-11-06 07:58:40,287 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-06 07:58:40,287 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2024-11-06 07:58:40,287 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX
[2024-11-06 07:58:40,288 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2024-11-06 07:58:40,288 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=248, Unknown=0, NotChecked=0, Total=306
[2024-11-06 07:58:40,288 INFO  L87              Difference]: Start difference. First operand 58 states and 85 transitions. Second operand  has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 7 states have internal predecessors, (26), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16)
[2024-11-06 07:58:42,998 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-06 07:58:42,998 INFO  L93              Difference]: Finished difference Result 74 states and 105 transitions.
[2024-11-06 07:58:43,001 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. 
[2024-11-06 07:58:43,002 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 7 states have internal predecessors, (26), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 103
[2024-11-06 07:58:43,002 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-06 07:58:43,004 INFO  L225             Difference]: With dead ends: 74
[2024-11-06 07:58:43,004 INFO  L226             Difference]: Without dead ends: 72
[2024-11-06 07:58:43,004 INFO  L431           NwaCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 188 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=70, Invalid=310, Unknown=0, NotChecked=0, Total=380
[2024-11-06 07:58:43,010 INFO  L432           NwaCegarLoop]: 68 mSDtfsCounter, 28 mSDsluCounter, 212 mSDsCounter, 0 mSdLazyCounter, 131 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 280 SdHoareTripleChecker+Invalid, 136 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 131 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time
[2024-11-06 07:58:43,011 INFO  L433           NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 280 Invalid, 136 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 131 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time]
[2024-11-06 07:58:43,011 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 72 states.
[2024-11-06 07:58:43,019 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 59.
[2024-11-06 07:58:43,019 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 59 states, 41 states have (on average 1.3414634146341464) internal successors, (55), 41 states have internal predecessors, (55), 16 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16)
[2024-11-06 07:58:43,020 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 87 transitions.
[2024-11-06 07:58:43,021 INFO  L78                 Accepts]: Start accepts. Automaton has 59 states and 87 transitions. Word has length 103
[2024-11-06 07:58:43,021 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-06 07:58:43,021 INFO  L471      AbstractCegarLoop]: Abstraction has 59 states and 87 transitions.
[2024-11-06 07:58:43,022 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 7 states have internal predecessors, (26), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16)
[2024-11-06 07:58:43,023 INFO  L276                IsEmpty]: Start isEmpty. Operand 59 states and 87 transitions.
[2024-11-06 07:58:43,026 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 104
[2024-11-06 07:58:43,026 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-06 07:58:43,026 INFO  L215           NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-06 07:58:43,043 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0
[2024-11-06 07:58:43,226 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-06 07:58:43,227 INFO  L396      AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-06 07:58:43,228 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-06 07:58:43,228 INFO  L85        PathProgramCache]: Analyzing trace with hash -1994204589, now seen corresponding path program 1 times
[2024-11-06 07:58:43,228 INFO  L118   FreeRefinementEngine]: Executing refinement strategy FOX
[2024-11-06 07:58:43,228 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1803796029]
[2024-11-06 07:58:43,228 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-06 07:58:43,228 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-06 07:58:43,228 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2024-11-06 07:58:43,233 INFO  L229       MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-06 07:58:43,234 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process
[2024-11-06 07:58:43,343 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-06 07:58:43,349 INFO  L255         TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 14 conjuncts are in the unsatisfiable core
[2024-11-06 07:58:43,352 INFO  L278         TraceCheckSpWp]: Computing forward predicates...
[2024-11-06 07:58:48,582 INFO  L134       CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 435 trivial. 0 not checked.
[2024-11-06 07:58:48,583 INFO  L311         TraceCheckSpWp]: Computing backward predicates...
[2024-11-06 07:59:10,405 INFO  L134       CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked.
[2024-11-06 07:59:10,406 INFO  L136   FreeRefinementEngine]: Strategy FOX found an infeasible trace
[2024-11-06 07:59:10,406 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1803796029]
[2024-11-06 07:59:10,406 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1803796029] provided 1 perfect and 1 imperfect interpolant sequences
[2024-11-06 07:59:10,406 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2024-11-06 07:59:10,406 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [11] total 17
[2024-11-06 07:59:10,406 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1284105736]
[2024-11-06 07:59:10,406 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-06 07:59:10,407 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 8 states
[2024-11-06 07:59:10,407 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX
[2024-11-06 07:59:10,407 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2024-11-06 07:59:10,408 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=216, Unknown=0, NotChecked=0, Total=272
[2024-11-06 07:59:10,408 INFO  L87              Difference]: Start difference. First operand 59 states and 87 transitions. Second operand  has 8 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16)
[2024-11-06 07:59:20,043 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-06 07:59:20,043 INFO  L93              Difference]: Finished difference Result 93 states and 132 transitions.
[2024-11-06 07:59:20,052 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. 
[2024-11-06 07:59:20,053 INFO  L78                 Accepts]: Start accepts. Automaton has  has 8 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 103
[2024-11-06 07:59:20,054 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-06 07:59:20,054 INFO  L225             Difference]: With dead ends: 93
[2024-11-06 07:59:20,055 INFO  L226             Difference]: Without dead ends: 91
[2024-11-06 07:59:20,055 INFO  L431           NwaCegarLoop]: 0 DeclaredPredicates, 207 GetRequests, 189 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 12.3s TimeCoverageRelationStatistics Valid=81, Invalid=299, Unknown=0, NotChecked=0, Total=380
[2024-11-06 07:59:20,056 INFO  L432           NwaCegarLoop]: 59 mSDtfsCounter, 35 mSDsluCounter, 206 mSDsCounter, 0 mSdLazyCounter, 174 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 265 SdHoareTripleChecker+Invalid, 180 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 174 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time
[2024-11-06 07:59:20,059 INFO  L433           NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 265 Invalid, 180 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 174 Invalid, 0 Unknown, 0 Unchecked, 4.3s Time]
[2024-11-06 07:59:20,059 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 91 states.
[2024-11-06 07:59:20,066 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 61.
[2024-11-06 07:59:20,067 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 61 states, 43 states have (on average 1.3488372093023255) internal successors, (58), 43 states have internal predecessors, (58), 16 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16)
[2024-11-06 07:59:20,067 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 90 transitions.
[2024-11-06 07:59:20,068 INFO  L78                 Accepts]: Start accepts. Automaton has 61 states and 90 transitions. Word has length 103
[2024-11-06 07:59:20,068 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-06 07:59:20,075 INFO  L471      AbstractCegarLoop]: Abstraction has 61 states and 90 transitions.
[2024-11-06 07:59:20,075 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 8 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16)
[2024-11-06 07:59:20,075 INFO  L276                IsEmpty]: Start isEmpty. Operand 61 states and 90 transitions.
[2024-11-06 07:59:20,076 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 105
[2024-11-06 07:59:20,076 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-06 07:59:20,076 INFO  L215           NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-06 07:59:20,094 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0
[2024-11-06 07:59:20,277 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-06 07:59:20,277 INFO  L396      AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-06 07:59:20,278 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-06 07:59:20,278 INFO  L85        PathProgramCache]: Analyzing trace with hash 915430240, now seen corresponding path program 1 times
[2024-11-06 07:59:20,278 INFO  L118   FreeRefinementEngine]: Executing refinement strategy FOX
[2024-11-06 07:59:20,279 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [840103811]
[2024-11-06 07:59:20,279 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-06 07:59:20,279 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-06 07:59:20,279 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2024-11-06 07:59:20,283 INFO  L229       MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-06 07:59:20,284 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process
[2024-11-06 07:59:20,364 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-06 07:59:20,368 INFO  L255         TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 13 conjuncts are in the unsatisfiable core
[2024-11-06 07:59:20,374 INFO  L278         TraceCheckSpWp]: Computing forward predicates...
[2024-11-06 07:59:23,652 INFO  L134       CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 435 trivial. 0 not checked.
[2024-11-06 07:59:23,653 INFO  L311         TraceCheckSpWp]: Computing backward predicates...