/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-85.i


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


This is Ultimate 0.2.5-dev-17387ad-m
[2024-11-06 08:00:08,720 INFO  L188        SettingsManager]: Resetting all preferences to default values...
[2024-11-06 08:00:08,785 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 08:00:08,789 WARN  L101        SettingsManager]: Preference file contains the following unknown settings:
[2024-11-06 08:00:08,792 WARN  L103        SettingsManager]:   * de.uni_freiburg.informatik.ultimate.core.Log level for class
[2024-11-06 08:00:08,816 INFO  L130        SettingsManager]: Preferences different from defaults after loading the file:
[2024-11-06 08:00:08,817 INFO  L151        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2024-11-06 08:00:08,817 INFO  L153        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2024-11-06 08:00:08,818 INFO  L151        SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults:
[2024-11-06 08:00:08,818 INFO  L153        SettingsManager]:  * Use memory slicer=true
[2024-11-06 08:00:08,818 INFO  L151        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2024-11-06 08:00:08,819 INFO  L153        SettingsManager]:  * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2024-11-06 08:00:08,820 INFO  L151        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2024-11-06 08:00:08,821 INFO  L153        SettingsManager]:  * Create parallel compositions if possible=false
[2024-11-06 08:00:08,821 INFO  L153        SettingsManager]:  * Use SBE=true
[2024-11-06 08:00:08,821 INFO  L151        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2024-11-06 08:00:08,822 INFO  L153        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2024-11-06 08:00:08,823 INFO  L153        SettingsManager]:  * sizeof long=4
[2024-11-06 08:00:08,823 INFO  L153        SettingsManager]:  * sizeof POINTER=4
[2024-11-06 08:00:08,824 INFO  L153        SettingsManager]:  * Check division by zero=IGNORE
[2024-11-06 08:00:08,824 INFO  L153        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2024-11-06 08:00:08,827 INFO  L153        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2024-11-06 08:00:08,828 INFO  L153        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2024-11-06 08:00:08,828 INFO  L153        SettingsManager]:  * Adapt memory model on pointer casts if necessary=true
[2024-11-06 08:00:08,828 INFO  L153        SettingsManager]:  * Use bitvectors instead of ints=true
[2024-11-06 08:00:08,828 INFO  L153        SettingsManager]:  * Allow undefined functions=false
[2024-11-06 08:00:08,828 INFO  L153        SettingsManager]:  * Memory model=HoenickeLindenmann_4ByteResolution
[2024-11-06 08:00:08,829 INFO  L153        SettingsManager]:  * sizeof long double=12
[2024-11-06 08:00:08,829 INFO  L153        SettingsManager]:  * Check if freed pointer was valid=false
[2024-11-06 08:00:08,829 INFO  L153        SettingsManager]:  * Use constant arrays=true
[2024-11-06 08:00:08,829 INFO  L151        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2024-11-06 08:00:08,830 INFO  L153        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2024-11-06 08:00:08,830 INFO  L153        SettingsManager]:  * Only consider context switches at boundaries of atomic blocks=true
[2024-11-06 08:00:08,830 INFO  L153        SettingsManager]:  * SMT solver=External_DefaultMode
[2024-11-06 08:00:08,830 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2024-11-06 08:00:08,831 INFO  L151        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2024-11-06 08:00:08,831 INFO  L153        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2024-11-06 08:00:08,833 INFO  L153        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopHeads
[2024-11-06 08:00:08,833 INFO  L153        SettingsManager]:  * Trace refinement strategy=WOLF
[2024-11-06 08:00:08,833 INFO  L153        SettingsManager]:  * Command for external solver=cvc4 --incremental --print-success --lang smt
[2024-11-06 08:00:08,833 INFO  L153        SettingsManager]:  * Apply one-shot large block encoding in concurrent analysis=false
[2024-11-06 08:00:08,834 INFO  L153        SettingsManager]:  * Automaton type used in concurrency analysis=PETRI_NET
[2024-11-06 08:00:08,834 INFO  L153        SettingsManager]:  * Order on configurations for Petri net unfoldings=DBO
[2024-11-06 08:00:08,834 INFO  L153        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2024-11-06 08:00:08,835 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$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Allow undefined functions -> true
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FOX
[2024-11-06 08:00:09,055 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2024-11-06 08:00:09,078 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2024-11-06 08:00:09,081 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2024-11-06 08:00:09,082 INFO  L270        PluginConnector]: Initializing CDTParser...
[2024-11-06 08:00:09,083 INFO  L274        PluginConnector]: CDTParser initialized
[2024-11-06 08:00:09,084 INFO  L431   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_floatingpointinfluence_no-floats_file-85.i
[2024-11-06 08:00:10,564 INFO  L533              CDTParser]: Created temporary CDT project at NULL
[2024-11-06 08:00:10,752 INFO  L384              CDTParser]: Found 1 translation units.
[2024-11-06 08:00:10,752 INFO  L180              CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_floatingpointinfluence_no-floats_file-85.i
[2024-11-06 08:00:10,761 INFO  L427              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d0f8ddecc/a9d3664e4a754ac2ac066429f24e5b3f/FLAG67d147bbc
[2024-11-06 08:00:10,773 INFO  L435              CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d0f8ddecc/a9d3664e4a754ac2ac066429f24e5b3f
[2024-11-06 08:00:10,775 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2024-11-06 08:00:10,777 INFO  L133        ToolchainWalker]: Walking toolchain with 5 elements.
[2024-11-06 08:00:10,778 INFO  L112        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2024-11-06 08:00:10,778 INFO  L270        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2024-11-06 08:00:10,781 INFO  L274        PluginConnector]: CACSL2BoogieTranslator initialized
[2024-11-06 08:00:10,782 INFO  L184        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 08:00:10" (1/1) ...
[2024-11-06 08:00:10,783 INFO  L204        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4dcceb8a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:00:10, skipping insertion in model container
[2024-11-06 08:00:10,783 INFO  L184        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 08:00:10" (1/1) ...
[2024-11-06 08:00:10,808 INFO  L175         MainTranslator]: Built tables and reachable declarations
[2024-11-06 08:00:10,973 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-85.i[916,929]
[2024-11-06 08:00:11,018 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2024-11-06 08:00:11,032 INFO  L200         MainTranslator]: Completed pre-run
[2024-11-06 08:00:11,042 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-85.i[916,929]
[2024-11-06 08:00:11,072 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2024-11-06 08:00:11,103 INFO  L204         MainTranslator]: Completed translation
[2024-11-06 08:00:11,104 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:00:11 WrapperNode
[2024-11-06 08:00:11,104 INFO  L131        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2024-11-06 08:00:11,105 INFO  L112        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2024-11-06 08:00:11,105 INFO  L270        PluginConnector]: Initializing Boogie Procedure Inliner...
[2024-11-06 08:00:11,106 INFO  L274        PluginConnector]: Boogie Procedure Inliner initialized
[2024-11-06 08:00:11,114 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:00:11" (1/1) ...
[2024-11-06 08:00:11,124 INFO  L184        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:00:11" (1/1) ...
[2024-11-06 08:00:11,147 INFO  L138                Inliner]: procedures = 27, calls = 36, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 124
[2024-11-06 08:00:11,148 INFO  L131        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2024-11-06 08:00:11,148 INFO  L112        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2024-11-06 08:00:11,149 INFO  L270        PluginConnector]: Initializing Boogie Preprocessor...
[2024-11-06 08:00:11,149 INFO  L274        PluginConnector]: Boogie Preprocessor initialized
[2024-11-06 08:00:11,159 INFO  L184        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:00:11" (1/1) ...
[2024-11-06 08:00:11,159 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:00:11" (1/1) ...
[2024-11-06 08:00:11,166 INFO  L184        PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:00:11" (1/1) ...
[2024-11-06 08:00:11,185 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 08:00:11,185 INFO  L184        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:00:11" (1/1) ...
[2024-11-06 08:00:11,185 INFO  L184        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:00:11" (1/1) ...
[2024-11-06 08:00:11,198 INFO  L184        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:00:11" (1/1) ...
[2024-11-06 08:00:11,204 INFO  L184        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:00:11" (1/1) ...
[2024-11-06 08:00:11,206 INFO  L184        PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:00:11" (1/1) ...
[2024-11-06 08:00:11,211 INFO  L184        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:00:11" (1/1) ...
[2024-11-06 08:00:11,218 INFO  L131        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2024-11-06 08:00:11,219 INFO  L112        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2024-11-06 08:00:11,219 INFO  L270        PluginConnector]: Initializing RCFGBuilder...
[2024-11-06 08:00:11,219 INFO  L274        PluginConnector]: RCFGBuilder initialized
[2024-11-06 08:00:11,220 INFO  L184        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:00:11" (1/1) ...
[2024-11-06 08:00:11,224 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2024-11-06 08:00:11,235 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2024-11-06 08:00:11,275 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 08:00:11,282 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 08:00:11,315 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2024-11-06 08:00:11,316 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0
[2024-11-06 08:00:11,316 INFO  L130     BoogieDeclarations]: Found specification of procedure assume_abort_if_not
[2024-11-06 08:00:11,316 INFO  L138     BoogieDeclarations]: Found implementation of procedure assume_abort_if_not
[2024-11-06 08:00:11,316 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2024-11-06 08:00:11,316 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2024-11-06 08:00:11,415 INFO  L238             CfgBuilder]: Building ICFG
[2024-11-06 08:00:11,418 INFO  L264             CfgBuilder]: Building CFG for each procedure with an implementation
[2024-11-06 08:00:11,694 INFO  L?                        ?]: Removed 10 outVars from TransFormulas that were not future-live.
[2024-11-06 08:00:11,695 INFO  L287             CfgBuilder]: Performing block encoding
[2024-11-06 08:00:11,706 INFO  L311             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2024-11-06 08:00:11,706 INFO  L316             CfgBuilder]: Removed 1 assume(true) statements.
[2024-11-06 08:00:11,707 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 08:00:11 BoogieIcfgContainer
[2024-11-06 08:00:11,707 INFO  L131        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2024-11-06 08:00:11,709 INFO  L112        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2024-11-06 08:00:11,710 INFO  L270        PluginConnector]: Initializing TraceAbstraction...
[2024-11-06 08:00:11,713 INFO  L274        PluginConnector]: TraceAbstraction initialized
[2024-11-06 08:00:11,713 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 08:00:10" (1/3) ...
[2024-11-06 08:00:11,714 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76b47856 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 08:00:11, skipping insertion in model container
[2024-11-06 08:00:11,714 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:00:11" (2/3) ...
[2024-11-06 08:00:11,715 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76b47856 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 08:00:11, skipping insertion in model container
[2024-11-06 08:00:11,715 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 08:00:11" (3/3) ...
[2024-11-06 08:00:11,719 INFO  L112   eAbstractionObserver]: Analyzing ICFG hardness_floatingpointinfluence_no-floats_file-85.i
[2024-11-06 08:00:11,735 INFO  L214   ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2024-11-06 08:00:11,735 INFO  L154   ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2024-11-06 08:00:11,783 INFO  L332      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2024-11-06 08:00:11,789 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;@637b7a4f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2024-11-06 08:00:11,790 INFO  L334      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2024-11-06 08:00:11,795 INFO  L276                IsEmpty]: Start isEmpty. Operand  has 59 states, 33 states have (on average 1.303030303030303) internal successors, (43), 34 states have internal predecessors, (43), 23 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23)
[2024-11-06 08:00:11,807 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 140
[2024-11-06 08:00:11,807 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-06 08:00:11,807 INFO  L215           NwaCegarLoop]: trace histogram [23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:00:11,808 INFO  L396      AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-06 08:00:11,812 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-06 08:00:11,812 INFO  L85        PathProgramCache]: Analyzing trace with hash 2080080809, now seen corresponding path program 1 times
[2024-11-06 08:00:11,823 INFO  L118   FreeRefinementEngine]: Executing refinement strategy FOX
[2024-11-06 08:00:11,824 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [583905326]
[2024-11-06 08:00:11,824 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-06 08:00:11,824 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-06 08:00:11,825 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2024-11-06 08:00:11,827 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 08:00:11,828 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 08:00:12,011 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-06 08:00:12,017 INFO  L255         TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 1 conjuncts are in the unsatisfiable core
[2024-11-06 08:00:12,030 INFO  L278         TraceCheckSpWp]: Computing forward predicates...
[2024-11-06 08:00:12,071 INFO  L134       CoverageAnalysis]: Checked inductivity of 1012 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 968 trivial. 0 not checked.
[2024-11-06 08:00:12,071 INFO  L307         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2024-11-06 08:00:12,072 INFO  L136   FreeRefinementEngine]: Strategy FOX found an infeasible trace
[2024-11-06 08:00:12,072 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [583905326]
[2024-11-06 08:00:12,073 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [583905326] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-06 08:00:12,073 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-06 08:00:12,073 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2024-11-06 08:00:12,075 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [518714409]
[2024-11-06 08:00:12,075 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-06 08:00:12,083 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 2 states
[2024-11-06 08:00:12,084 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX
[2024-11-06 08:00:12,106 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants.
[2024-11-06 08:00:12,107 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2024-11-06 08:00:12,109 INFO  L87              Difference]: Start difference. First operand  has 59 states, 33 states have (on average 1.303030303030303) internal successors, (43), 34 states have internal predecessors, (43), 23 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) Second operand  has 2 states, 2 states have (on average 14.5) internal successors, (29), 2 states have internal predecessors, (29), 2 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 2 states have call successors, (23)
[2024-11-06 08:00:12,134 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-06 08:00:12,134 INFO  L93              Difference]: Finished difference Result 111 states and 195 transitions.
[2024-11-06 08:00:12,135 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. 
[2024-11-06 08:00:12,136 INFO  L78                 Accepts]: Start accepts. Automaton has  has 2 states, 2 states have (on average 14.5) internal successors, (29), 2 states have internal predecessors, (29), 2 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 2 states have call successors, (23) Word has length 139
[2024-11-06 08:00:12,136 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-06 08:00:12,141 INFO  L225             Difference]: With dead ends: 111
[2024-11-06 08:00:12,142 INFO  L226             Difference]: Without dead ends: 55
[2024-11-06 08:00:12,144 INFO  L431           NwaCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 138 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 08:00:12,147 INFO  L432           NwaCegarLoop]: 82 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, 82 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 08:00:12,148 INFO  L433           NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2024-11-06 08:00:12,161 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 55 states.
[2024-11-06 08:00:12,181 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55.
[2024-11-06 08:00:12,183 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 55 states, 30 states have (on average 1.2) internal successors, (36), 30 states have internal predecessors, (36), 23 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23)
[2024-11-06 08:00:12,184 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 82 transitions.
[2024-11-06 08:00:12,188 INFO  L78                 Accepts]: Start accepts. Automaton has 55 states and 82 transitions. Word has length 139
[2024-11-06 08:00:12,188 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-06 08:00:12,189 INFO  L471      AbstractCegarLoop]: Abstraction has 55 states and 82 transitions.
[2024-11-06 08:00:12,189 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 2 states, 2 states have (on average 14.5) internal successors, (29), 2 states have internal predecessors, (29), 2 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 2 states have call successors, (23)
[2024-11-06 08:00:12,189 INFO  L276                IsEmpty]: Start isEmpty. Operand 55 states and 82 transitions.
[2024-11-06 08:00:12,195 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 140
[2024-11-06 08:00:12,195 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-06 08:00:12,195 INFO  L215           NwaCegarLoop]: trace histogram [23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:00:12,219 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 08:00:12,396 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 08:00:12,397 INFO  L396      AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-06 08:00:12,398 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-06 08:00:12,398 INFO  L85        PathProgramCache]: Analyzing trace with hash 765421479, now seen corresponding path program 1 times
[2024-11-06 08:00:12,399 INFO  L118   FreeRefinementEngine]: Executing refinement strategy FOX
[2024-11-06 08:00:12,399 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [322612956]
[2024-11-06 08:00:12,399 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-06 08:00:12,400 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-06 08:00:12,400 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2024-11-06 08:00:12,404 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 08:00:12,405 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 08:00:12,559 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-06 08:00:12,563 INFO  L255         TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 5 conjuncts are in the unsatisfiable core
[2024-11-06 08:00:12,570 INFO  L278         TraceCheckSpWp]: Computing forward predicates...
[2024-11-06 08:00:12,891 INFO  L134       CoverageAnalysis]: Checked inductivity of 1012 backedges. 256 proven. 57 refuted. 0 times theorem prover too weak. 699 trivial. 0 not checked.
[2024-11-06 08:00:12,892 INFO  L311         TraceCheckSpWp]: Computing backward predicates...
[2024-11-06 08:00:13,177 INFO  L134       CoverageAnalysis]: Checked inductivity of 1012 backedges. 9 proven. 57 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked.
[2024-11-06 08:00:13,178 INFO  L136   FreeRefinementEngine]: Strategy FOX found an infeasible trace
[2024-11-06 08:00:13,178 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [322612956]
[2024-11-06 08:00:13,178 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [322612956] provided 0 perfect and 2 imperfect interpolant sequences
[2024-11-06 08:00:13,178 INFO  L185   FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2024-11-06 08:00:13,178 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8
[2024-11-06 08:00:13,179 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [26687470]
[2024-11-06 08:00:13,179 INFO  L85    oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2024-11-06 08:00:13,184 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 8 states
[2024-11-06 08:00:13,184 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX
[2024-11-06 08:00:13,185 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2024-11-06 08:00:13,186 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56
[2024-11-06 08:00:13,186 INFO  L87              Difference]: Start difference. First operand 55 states and 82 transitions. Second operand  has 8 states, 8 states have (on average 4.5) internal successors, (36), 8 states have internal predecessors, (36), 2 states have call successors, (42), 2 states have call predecessors, (42), 4 states have return successors, (43), 2 states have call predecessors, (43), 2 states have call successors, (43)
[2024-11-06 08:00:13,844 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-06 08:00:13,845 INFO  L93              Difference]: Finished difference Result 174 states and 252 transitions.
[2024-11-06 08:00:13,846 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. 
[2024-11-06 08:00:13,846 INFO  L78                 Accepts]: Start accepts. Automaton has  has 8 states, 8 states have (on average 4.5) internal successors, (36), 8 states have internal predecessors, (36), 2 states have call successors, (42), 2 states have call predecessors, (42), 4 states have return successors, (43), 2 states have call predecessors, (43), 2 states have call successors, (43) Word has length 139
[2024-11-06 08:00:13,847 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-06 08:00:13,850 INFO  L225             Difference]: With dead ends: 174
[2024-11-06 08:00:13,850 INFO  L226             Difference]: Without dead ends: 122
[2024-11-06 08:00:13,852 INFO  L431           NwaCegarLoop]: 0 DeclaredPredicates, 288 GetRequests, 270 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=112, Invalid=230, Unknown=0, NotChecked=0, Total=342
[2024-11-06 08:00:13,853 INFO  L432           NwaCegarLoop]: 95 mSDtfsCounter, 68 mSDsluCounter, 145 mSDsCounter, 0 mSdLazyCounter, 295 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 240 SdHoareTripleChecker+Invalid, 346 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 295 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time
[2024-11-06 08:00:13,853 INFO  L433           NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 240 Invalid, 346 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 295 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time]
[2024-11-06 08:00:13,854 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 122 states.
[2024-11-06 08:00:13,872 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 60.
[2024-11-06 08:00:13,873 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 60 states, 34 states have (on average 1.1764705882352942) internal successors, (40), 34 states have internal predecessors, (40), 23 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23)
[2024-11-06 08:00:13,874 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 86 transitions.
[2024-11-06 08:00:13,877 INFO  L78                 Accepts]: Start accepts. Automaton has 60 states and 86 transitions. Word has length 139
[2024-11-06 08:00:13,877 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-06 08:00:13,878 INFO  L471      AbstractCegarLoop]: Abstraction has 60 states and 86 transitions.
[2024-11-06 08:00:13,878 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 8 states, 8 states have (on average 4.5) internal successors, (36), 8 states have internal predecessors, (36), 2 states have call successors, (42), 2 states have call predecessors, (42), 4 states have return successors, (43), 2 states have call predecessors, (43), 2 states have call successors, (43)
[2024-11-06 08:00:13,878 INFO  L276                IsEmpty]: Start isEmpty. Operand 60 states and 86 transitions.
[2024-11-06 08:00:13,881 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 141
[2024-11-06 08:00:13,881 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-06 08:00:13,881 INFO  L215           NwaCegarLoop]: trace histogram [23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:00:13,905 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 08:00:14,081 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 08:00:14,082 INFO  L396      AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-06 08:00:14,083 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-06 08:00:14,083 INFO  L85        PathProgramCache]: Analyzing trace with hash -1988236148, now seen corresponding path program 1 times
[2024-11-06 08:00:14,084 INFO  L118   FreeRefinementEngine]: Executing refinement strategy FOX
[2024-11-06 08:00:14,084 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1008458612]
[2024-11-06 08:00:14,084 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-06 08:00:14,085 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-06 08:00:14,085 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2024-11-06 08:00:14,087 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 08:00:14,089 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 08:00:14,190 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-06 08:00:14,200 INFO  L255         TraceCheckSpWp]: Trace formula consists of 223 conjuncts, 13 conjuncts are in the unsatisfiable core
[2024-11-06 08:00:14,207 INFO  L278         TraceCheckSpWp]: Computing forward predicates...
[2024-11-06 08:00:15,051 INFO  L134       CoverageAnalysis]: Checked inductivity of 1012 backedges. 527 proven. 126 refuted. 0 times theorem prover too weak. 359 trivial. 0 not checked.
[2024-11-06 08:00:15,052 INFO  L311         TraceCheckSpWp]: Computing backward predicates...
[2024-11-06 08:00:15,588 INFO  L134       CoverageAnalysis]: Checked inductivity of 1012 backedges. 54 proven. 135 refuted. 0 times theorem prover too weak. 823 trivial. 0 not checked.
[2024-11-06 08:00:15,589 INFO  L136   FreeRefinementEngine]: Strategy FOX found an infeasible trace
[2024-11-06 08:00:15,590 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1008458612]
[2024-11-06 08:00:15,590 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1008458612] provided 0 perfect and 2 imperfect interpolant sequences
[2024-11-06 08:00:15,590 INFO  L185   FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2024-11-06 08:00:15,590 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 22
[2024-11-06 08:00:15,591 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1354552760]
[2024-11-06 08:00:15,591 INFO  L85    oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2024-11-06 08:00:15,591 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 22 states
[2024-11-06 08:00:15,592 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX
[2024-11-06 08:00:15,593 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants.
[2024-11-06 08:00:15,595 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=357, Unknown=0, NotChecked=0, Total=462
[2024-11-06 08:00:15,596 INFO  L87              Difference]: Start difference. First operand 60 states and 86 transitions. Second operand  has 22 states, 22 states have (on average 2.727272727272727) internal successors, (60), 22 states have internal predecessors, (60), 4 states have call successors, (40), 4 states have call predecessors, (40), 10 states have return successors, (41), 4 states have call predecessors, (41), 4 states have call successors, (41)
[2024-11-06 08:00:17,306 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-06 08:00:17,307 INFO  L93              Difference]: Finished difference Result 209 states and 279 transitions.
[2024-11-06 08:00:17,307 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. 
[2024-11-06 08:00:17,307 INFO  L78                 Accepts]: Start accepts. Automaton has  has 22 states, 22 states have (on average 2.727272727272727) internal successors, (60), 22 states have internal predecessors, (60), 4 states have call successors, (40), 4 states have call predecessors, (40), 10 states have return successors, (41), 4 states have call predecessors, (41), 4 states have call successors, (41) Word has length 140
[2024-11-06 08:00:17,308 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-06 08:00:17,310 INFO  L225             Difference]: With dead ends: 209
[2024-11-06 08:00:17,310 INFO  L226             Difference]: Without dead ends: 152
[2024-11-06 08:00:17,313 INFO  L431           NwaCegarLoop]: 0 DeclaredPredicates, 328 GetRequests, 263 SyntacticMatches, 1 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1126 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1122, Invalid=3168, Unknown=0, NotChecked=0, Total=4290
[2024-11-06 08:00:17,314 INFO  L432           NwaCegarLoop]: 88 mSDtfsCounter, 324 mSDsluCounter, 177 mSDsCounter, 0 mSdLazyCounter, 543 mSolverCounterSat, 277 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 324 SdHoareTripleChecker+Valid, 265 SdHoareTripleChecker+Invalid, 820 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 277 IncrementalHoareTripleChecker+Valid, 543 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time
[2024-11-06 08:00:17,314 INFO  L433           NwaCegarLoop]: SdHoareTripleChecker [324 Valid, 265 Invalid, 820 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [277 Valid, 543 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time]
[2024-11-06 08:00:17,315 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 152 states.
[2024-11-06 08:00:17,332 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 71.
[2024-11-06 08:00:17,332 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 71 states, 42 states have (on average 1.0714285714285714) internal successors, (45), 42 states have internal predecessors, (45), 23 states have call successors, (23), 5 states have call predecessors, (23), 5 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23)
[2024-11-06 08:00:17,333 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 91 transitions.
[2024-11-06 08:00:17,334 INFO  L78                 Accepts]: Start accepts. Automaton has 71 states and 91 transitions. Word has length 140
[2024-11-06 08:00:17,334 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-06 08:00:17,334 INFO  L471      AbstractCegarLoop]: Abstraction has 71 states and 91 transitions.
[2024-11-06 08:00:17,335 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 22 states, 22 states have (on average 2.727272727272727) internal successors, (60), 22 states have internal predecessors, (60), 4 states have call successors, (40), 4 states have call predecessors, (40), 10 states have return successors, (41), 4 states have call predecessors, (41), 4 states have call successors, (41)
[2024-11-06 08:00:17,335 INFO  L276                IsEmpty]: Start isEmpty. Operand 71 states and 91 transitions.
[2024-11-06 08:00:17,337 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 141
[2024-11-06 08:00:17,337 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-06 08:00:17,337 INFO  L215           NwaCegarLoop]: trace histogram [23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:00:17,359 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0
[2024-11-06 08:00:17,541 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 08:00:17,542 INFO  L396      AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-06 08:00:17,542 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-06 08:00:17,543 INFO  L85        PathProgramCache]: Analyzing trace with hash -1986389106, now seen corresponding path program 1 times
[2024-11-06 08:00:17,543 INFO  L118   FreeRefinementEngine]: Executing refinement strategy FOX
[2024-11-06 08:00:17,543 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1662095224]
[2024-11-06 08:00:17,544 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-06 08:00:17,544 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-06 08:00:17,544 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2024-11-06 08:00:17,546 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 08:00:17,548 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 08:00:17,636 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-06 08:00:17,647 INFO  L255         TraceCheckSpWp]: Trace formula consists of 223 conjuncts, 22 conjuncts are in the unsatisfiable core
[2024-11-06 08:00:17,653 INFO  L278         TraceCheckSpWp]: Computing forward predicates...