/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-9.i


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


This is Ultimate 0.2.5-dev-17387ad-m
[2024-11-06 08:00:42,726 INFO  L188        SettingsManager]: Resetting all preferences to default values...
[2024-11-06 08:00:42,803 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 08:00:42,810 WARN  L101        SettingsManager]: Preference file contains the following unknown settings:
[2024-11-06 08:00:42,810 WARN  L103        SettingsManager]:   * de.uni_freiburg.informatik.ultimate.core.Log level for class
[2024-11-06 08:00:42,841 INFO  L130        SettingsManager]: Preferences different from defaults after loading the file:
[2024-11-06 08:00:42,841 INFO  L151        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2024-11-06 08:00:42,842 INFO  L153        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2024-11-06 08:00:42,842 INFO  L151        SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults:
[2024-11-06 08:00:42,843 INFO  L153        SettingsManager]:  * Use memory slicer=true
[2024-11-06 08:00:42,843 INFO  L151        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2024-11-06 08:00:42,843 INFO  L153        SettingsManager]:  * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2024-11-06 08:00:42,844 INFO  L151        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2024-11-06 08:00:42,844 INFO  L153        SettingsManager]:  * Create parallel compositions if possible=false
[2024-11-06 08:00:42,845 INFO  L153        SettingsManager]:  * Use SBE=true
[2024-11-06 08:00:42,845 INFO  L151        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2024-11-06 08:00:42,847 INFO  L153        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2024-11-06 08:00:42,847 INFO  L153        SettingsManager]:  * sizeof long=4
[2024-11-06 08:00:42,847 INFO  L153        SettingsManager]:  * sizeof POINTER=4
[2024-11-06 08:00:42,848 INFO  L153        SettingsManager]:  * Check division by zero=IGNORE
[2024-11-06 08:00:42,848 INFO  L153        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2024-11-06 08:00:42,852 INFO  L153        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2024-11-06 08:00:42,853 INFO  L153        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2024-11-06 08:00:42,853 INFO  L153        SettingsManager]:  * Adapt memory model on pointer casts if necessary=true
[2024-11-06 08:00:42,853 INFO  L153        SettingsManager]:  * Use bitvectors instead of ints=true
[2024-11-06 08:00:42,853 INFO  L153        SettingsManager]:  * Allow undefined functions=false
[2024-11-06 08:00:42,854 INFO  L153        SettingsManager]:  * Memory model=HoenickeLindenmann_4ByteResolution
[2024-11-06 08:00:42,854 INFO  L153        SettingsManager]:  * sizeof long double=12
[2024-11-06 08:00:42,854 INFO  L153        SettingsManager]:  * Check if freed pointer was valid=false
[2024-11-06 08:00:42,855 INFO  L153        SettingsManager]:  * Use constant arrays=true
[2024-11-06 08:00:42,855 INFO  L151        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2024-11-06 08:00:42,855 INFO  L153        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2024-11-06 08:00:42,855 INFO  L153        SettingsManager]:  * Only consider context switches at boundaries of atomic blocks=true
[2024-11-06 08:00:42,856 INFO  L153        SettingsManager]:  * SMT solver=External_DefaultMode
[2024-11-06 08:00:42,856 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2024-11-06 08:00:42,858 INFO  L151        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2024-11-06 08:00:42,859 INFO  L153        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2024-11-06 08:00:42,859 INFO  L153        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopHeads
[2024-11-06 08:00:42,859 INFO  L153        SettingsManager]:  * Trace refinement strategy=WOLF
[2024-11-06 08:00:42,859 INFO  L153        SettingsManager]:  * Command for external solver=cvc4 --incremental --print-success --lang smt
[2024-11-06 08:00:42,860 INFO  L153        SettingsManager]:  * Apply one-shot large block encoding in concurrent analysis=false
[2024-11-06 08:00:42,860 INFO  L153        SettingsManager]:  * Automaton type used in concurrency analysis=PETRI_NET
[2024-11-06 08:00:42,860 INFO  L153        SettingsManager]:  * Order on configurations for Petri net unfoldings=DBO
[2024-11-06 08:00:42,861 INFO  L153        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2024-11-06 08:00:42,861 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$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Allow undefined functions -> true
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FOX
[2024-11-06 08:00:43,105 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2024-11-06 08:00:43,131 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2024-11-06 08:00:43,134 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2024-11-06 08:00:43,135 INFO  L270        PluginConnector]: Initializing CDTParser...
[2024-11-06 08:00:43,136 INFO  L274        PluginConnector]: CDTParser initialized
[2024-11-06 08:00:43,137 INFO  L431   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_floatingpointinfluence_no-floats_file-9.i
[2024-11-06 08:00:44,573 INFO  L533              CDTParser]: Created temporary CDT project at NULL
[2024-11-06 08:00:44,748 INFO  L384              CDTParser]: Found 1 translation units.
[2024-11-06 08:00:44,749 INFO  L180              CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_floatingpointinfluence_no-floats_file-9.i
[2024-11-06 08:00:44,756 INFO  L427              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e1826496d/d8620a9c6ee749939886d62cc7ab2996/FLAG13ae450dc
[2024-11-06 08:00:44,767 INFO  L435              CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e1826496d/d8620a9c6ee749939886d62cc7ab2996
[2024-11-06 08:00:44,769 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2024-11-06 08:00:44,770 INFO  L133        ToolchainWalker]: Walking toolchain with 5 elements.
[2024-11-06 08:00:44,771 INFO  L112        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2024-11-06 08:00:44,771 INFO  L270        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2024-11-06 08:00:44,777 INFO  L274        PluginConnector]: CACSL2BoogieTranslator initialized
[2024-11-06 08:00:44,777 INFO  L184        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 08:00:44" (1/1) ...
[2024-11-06 08:00:44,778 INFO  L204        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@30b6344e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:00:44, skipping insertion in model container
[2024-11-06 08:00:44,779 INFO  L184        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 08:00:44" (1/1) ...
[2024-11-06 08:00:44,800 INFO  L175         MainTranslator]: Built tables and reachable declarations
[2024-11-06 08:00:44,954 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-9.i[915,928]
[2024-11-06 08:00:44,985 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2024-11-06 08:00:44,996 INFO  L200         MainTranslator]: Completed pre-run
[2024-11-06 08:00:45,012 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-9.i[915,928]
[2024-11-06 08:00:45,027 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2024-11-06 08:00:45,047 INFO  L204         MainTranslator]: Completed translation
[2024-11-06 08:00:45,048 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:00:45 WrapperNode
[2024-11-06 08:00:45,048 INFO  L131        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2024-11-06 08:00:45,049 INFO  L112        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2024-11-06 08:00:45,049 INFO  L270        PluginConnector]: Initializing Boogie Procedure Inliner...
[2024-11-06 08:00:45,049 INFO  L274        PluginConnector]: Boogie Procedure Inliner initialized
[2024-11-06 08:00:45,056 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:00:45" (1/1) ...
[2024-11-06 08:00:45,065 INFO  L184        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:00:45" (1/1) ...
[2024-11-06 08:00:45,084 INFO  L138                Inliner]: procedures = 27, calls = 19, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 82
[2024-11-06 08:00:45,084 INFO  L131        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2024-11-06 08:00:45,085 INFO  L112        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2024-11-06 08:00:45,085 INFO  L270        PluginConnector]: Initializing Boogie Preprocessor...
[2024-11-06 08:00:45,085 INFO  L274        PluginConnector]: Boogie Preprocessor initialized
[2024-11-06 08:00:45,105 INFO  L184        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:00:45" (1/1) ...
[2024-11-06 08:00:45,105 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:00:45" (1/1) ...
[2024-11-06 08:00:45,108 INFO  L184        PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:00:45" (1/1) ...
[2024-11-06 08:00:45,130 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 08:00:45,130 INFO  L184        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:00:45" (1/1) ...
[2024-11-06 08:00:45,130 INFO  L184        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:00:45" (1/1) ...
[2024-11-06 08:00:45,144 INFO  L184        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:00:45" (1/1) ...
[2024-11-06 08:00:45,151 INFO  L184        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:00:45" (1/1) ...
[2024-11-06 08:00:45,158 INFO  L184        PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:00:45" (1/1) ...
[2024-11-06 08:00:45,159 INFO  L184        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:00:45" (1/1) ...
[2024-11-06 08:00:45,166 INFO  L131        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2024-11-06 08:00:45,171 INFO  L112        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2024-11-06 08:00:45,171 INFO  L270        PluginConnector]: Initializing RCFGBuilder...
[2024-11-06 08:00:45,171 INFO  L274        PluginConnector]: RCFGBuilder initialized
[2024-11-06 08:00:45,172 INFO  L184        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:00:45" (1/1) ...
[2024-11-06 08:00:45,178 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2024-11-06 08:00:45,191 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2024-11-06 08:00:45,209 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 08:00:45,244 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 08:00:45,276 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2024-11-06 08:00:45,277 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0
[2024-11-06 08:00:45,277 INFO  L130     BoogieDeclarations]: Found specification of procedure assume_abort_if_not
[2024-11-06 08:00:45,277 INFO  L138     BoogieDeclarations]: Found implementation of procedure assume_abort_if_not
[2024-11-06 08:00:45,277 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2024-11-06 08:00:45,279 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2024-11-06 08:00:45,370 INFO  L238             CfgBuilder]: Building ICFG
[2024-11-06 08:00:45,374 INFO  L264             CfgBuilder]: Building CFG for each procedure with an implementation
[2024-11-06 08:00:45,623 INFO  L?                        ?]: Removed 10 outVars from TransFormulas that were not future-live.
[2024-11-06 08:00:45,623 INFO  L287             CfgBuilder]: Performing block encoding
[2024-11-06 08:00:45,636 INFO  L311             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2024-11-06 08:00:45,636 INFO  L316             CfgBuilder]: Removed 1 assume(true) statements.
[2024-11-06 08:00:45,637 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 08:00:45 BoogieIcfgContainer
[2024-11-06 08:00:45,637 INFO  L131        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2024-11-06 08:00:45,640 INFO  L112        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2024-11-06 08:00:45,640 INFO  L270        PluginConnector]: Initializing TraceAbstraction...
[2024-11-06 08:00:45,644 INFO  L274        PluginConnector]: TraceAbstraction initialized
[2024-11-06 08:00:45,644 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 08:00:44" (1/3) ...
[2024-11-06 08:00:45,645 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52e86fc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 08:00:45, skipping insertion in model container
[2024-11-06 08:00:45,645 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:00:45" (2/3) ...
[2024-11-06 08:00:45,645 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52e86fc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 08:00:45, skipping insertion in model container
[2024-11-06 08:00:45,645 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 08:00:45" (3/3) ...
[2024-11-06 08:00:45,647 INFO  L112   eAbstractionObserver]: Analyzing ICFG hardness_floatingpointinfluence_no-floats_file-9.i
[2024-11-06 08:00:45,676 INFO  L214   ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2024-11-06 08:00:45,676 INFO  L154   ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2024-11-06 08:00:45,741 INFO  L332      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2024-11-06 08:00:45,747 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;@2b672e98, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2024-11-06 08:00:45,748 INFO  L334      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2024-11-06 08:00:45,752 INFO  L276                IsEmpty]: Start isEmpty. Operand  has 35 states, 26 states have (on average 1.3846153846153846) internal successors, (36), 27 states have internal predecessors, (36), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6)
[2024-11-06 08:00:45,760 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 48
[2024-11-06 08:00:45,760 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-06 08:00:45,761 INFO  L215           NwaCegarLoop]: trace histogram [6, 6, 6, 1, 1, 1, 1, 1, 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 08:00:45,761 INFO  L396      AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-06 08:00:45,767 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-06 08:00:45,767 INFO  L85        PathProgramCache]: Analyzing trace with hash -1890713193, now seen corresponding path program 1 times
[2024-11-06 08:00:45,780 INFO  L118   FreeRefinementEngine]: Executing refinement strategy FOX
[2024-11-06 08:00:45,780 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [935278952]
[2024-11-06 08:00:45,780 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-06 08:00:45,781 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-06 08:00:45,781 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2024-11-06 08:00:45,783 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 08:00:45,784 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 08:00:45,883 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-06 08:00:45,887 INFO  L255         TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 1 conjuncts are in the unsatisfiable core
[2024-11-06 08:00:45,892 INFO  L278         TraceCheckSpWp]: Computing forward predicates...
[2024-11-06 08:00:45,913 INFO  L134       CoverageAnalysis]: Checked inductivity of 60 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked.
[2024-11-06 08:00:45,913 INFO  L307         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2024-11-06 08:00:45,914 INFO  L136   FreeRefinementEngine]: Strategy FOX found an infeasible trace
[2024-11-06 08:00:45,914 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [935278952]
[2024-11-06 08:00:45,914 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [935278952] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-06 08:00:45,914 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-06 08:00:45,915 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2024-11-06 08:00:45,916 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [174344337]
[2024-11-06 08:00:45,916 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-06 08:00:45,919 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 2 states
[2024-11-06 08:00:45,919 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX
[2024-11-06 08:00:45,934 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants.
[2024-11-06 08:00:45,935 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2024-11-06 08:00:45,937 INFO  L87              Difference]: Start difference. First operand  has 35 states, 26 states have (on average 1.3846153846153846) internal successors, (36), 27 states have internal predecessors, (36), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Second operand  has 2 states, 2 states have (on average 11.0) internal successors, (22), 2 states have internal predecessors, (22), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 2 states have call successors, (6)
[2024-11-06 08:00:45,954 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-06 08:00:45,954 INFO  L93              Difference]: Finished difference Result 62 states and 94 transitions.
[2024-11-06 08:00:45,955 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. 
[2024-11-06 08:00:45,956 INFO  L78                 Accepts]: Start accepts. Automaton has  has 2 states, 2 states have (on average 11.0) internal successors, (22), 2 states have internal predecessors, (22), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 2 states have call successors, (6) Word has length 47
[2024-11-06 08:00:45,956 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-06 08:00:45,963 INFO  L225             Difference]: With dead ends: 62
[2024-11-06 08:00:45,963 INFO  L226             Difference]: Without dead ends: 30
[2024-11-06 08:00:45,966 INFO  L431           NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 46 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 08:00:45,969 INFO  L432           NwaCegarLoop]: 38 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, 38 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 08:00:45,970 INFO  L433           NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2024-11-06 08:00:45,982 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 30 states.
[2024-11-06 08:00:45,994 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30.
[2024-11-06 08:00:45,995 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 30 states, 22 states have (on average 1.1818181818181819) internal successors, (26), 22 states have internal predecessors, (26), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6)
[2024-11-06 08:00:45,996 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 38 transitions.
[2024-11-06 08:00:45,998 INFO  L78                 Accepts]: Start accepts. Automaton has 30 states and 38 transitions. Word has length 47
[2024-11-06 08:00:45,998 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-06 08:00:45,998 INFO  L471      AbstractCegarLoop]: Abstraction has 30 states and 38 transitions.
[2024-11-06 08:00:45,998 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 2 states, 2 states have (on average 11.0) internal successors, (22), 2 states have internal predecessors, (22), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 2 states have call successors, (6)
[2024-11-06 08:00:45,999 INFO  L276                IsEmpty]: Start isEmpty. Operand 30 states and 38 transitions.
[2024-11-06 08:00:46,000 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 48
[2024-11-06 08:00:46,000 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-06 08:00:46,001 INFO  L215           NwaCegarLoop]: trace histogram [6, 6, 6, 1, 1, 1, 1, 1, 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 08:00:46,017 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 08:00:46,201 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 08:00:46,202 INFO  L396      AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-06 08:00:46,203 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-06 08:00:46,203 INFO  L85        PathProgramCache]: Analyzing trace with hash -1140319529, now seen corresponding path program 1 times
[2024-11-06 08:00:46,204 INFO  L118   FreeRefinementEngine]: Executing refinement strategy FOX
[2024-11-06 08:00:46,204 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [154955586]
[2024-11-06 08:00:46,204 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-06 08:00:46,204 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-06 08:00:46,204 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2024-11-06 08:00:46,206 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 08:00:46,208 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 08:00:46,291 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-06 08:00:46,294 INFO  L255         TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 6 conjuncts are in the unsatisfiable core
[2024-11-06 08:00:46,300 INFO  L278         TraceCheckSpWp]: Computing forward predicates...
[2024-11-06 08:00:46,782 INFO  L134       CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked.
[2024-11-06 08:00:46,782 INFO  L307         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2024-11-06 08:00:46,782 INFO  L136   FreeRefinementEngine]: Strategy FOX found an infeasible trace
[2024-11-06 08:00:46,782 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [154955586]
[2024-11-06 08:00:46,783 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [154955586] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-06 08:00:46,783 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-06 08:00:46,783 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2024-11-06 08:00:46,783 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2051060733]
[2024-11-06 08:00:46,783 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-06 08:00:46,786 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2024-11-06 08:00:46,786 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX
[2024-11-06 08:00:46,787 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2024-11-06 08:00:46,787 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20
[2024-11-06 08:00:46,788 INFO  L87              Difference]: Start difference. First operand 30 states and 38 transitions. Second operand  has 5 states, 5 states have (on average 4.0) internal successors, (20), 4 states have internal predecessors, (20), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6)
[2024-11-06 08:00:46,980 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-06 08:00:46,981 INFO  L93              Difference]: Finished difference Result 84 states and 108 transitions.
[2024-11-06 08:00:46,981 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2024-11-06 08:00:46,981 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 4.0) internal successors, (20), 4 states have internal predecessors, (20), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 47
[2024-11-06 08:00:46,982 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-06 08:00:46,983 INFO  L225             Difference]: With dead ends: 84
[2024-11-06 08:00:46,983 INFO  L226             Difference]: Without dead ends: 57
[2024-11-06 08:00:46,984 INFO  L431           NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42
[2024-11-06 08:00:46,985 INFO  L432           NwaCegarLoop]: 31 mSDtfsCounter, 26 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 103 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2024-11-06 08:00:46,986 INFO  L433           NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 103 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2024-11-06 08:00:46,990 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 57 states.
[2024-11-06 08:00:47,006 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 50.
[2024-11-06 08:00:47,006 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 50 states, 35 states have (on average 1.1428571428571428) internal successors, (40), 35 states have internal predecessors, (40), 12 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12)
[2024-11-06 08:00:47,008 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 64 transitions.
[2024-11-06 08:00:47,008 INFO  L78                 Accepts]: Start accepts. Automaton has 50 states and 64 transitions. Word has length 47
[2024-11-06 08:00:47,008 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-06 08:00:47,008 INFO  L471      AbstractCegarLoop]: Abstraction has 50 states and 64 transitions.
[2024-11-06 08:00:47,009 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 4.0) internal successors, (20), 4 states have internal predecessors, (20), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6)
[2024-11-06 08:00:47,009 INFO  L276                IsEmpty]: Start isEmpty. Operand 50 states and 64 transitions.
[2024-11-06 08:00:47,012 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 48
[2024-11-06 08:00:47,012 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-06 08:00:47,012 INFO  L215           NwaCegarLoop]: trace histogram [6, 6, 6, 1, 1, 1, 1, 1, 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 08:00:47,032 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0
[2024-11-06 08:00:47,213 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 08:00:47,214 INFO  L396      AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-06 08:00:47,214 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-06 08:00:47,214 INFO  L85        PathProgramCache]: Analyzing trace with hash -460261159, now seen corresponding path program 1 times
[2024-11-06 08:00:47,215 INFO  L118   FreeRefinementEngine]: Executing refinement strategy FOX
[2024-11-06 08:00:47,215 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1935538334]
[2024-11-06 08:00:47,215 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-06 08:00:47,215 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-06 08:00:47,216 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2024-11-06 08:00:47,217 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 08:00:47,219 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 08:00:47,285 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-06 08:00:47,287 INFO  L255         TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 17 conjuncts are in the unsatisfiable core
[2024-11-06 08:00:47,292 INFO  L278         TraceCheckSpWp]: Computing forward predicates...
[2024-11-06 08:01:31,522 INFO  L134       CoverageAnalysis]: Checked inductivity of 60 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked.
[2024-11-06 08:01:31,522 INFO  L307         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2024-11-06 08:01:31,523 INFO  L136   FreeRefinementEngine]: Strategy FOX found an infeasible trace
[2024-11-06 08:01:31,523 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1935538334]
[2024-11-06 08:01:31,523 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1935538334] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-06 08:01:31,523 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-06 08:01:31,524 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12
[2024-11-06 08:01:31,524 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1555171074]
[2024-11-06 08:01:31,524 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-06 08:01:31,526 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 13 states
[2024-11-06 08:01:31,526 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX
[2024-11-06 08:01:31,527 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants.
[2024-11-06 08:01:31,527 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156
[2024-11-06 08:01:31,528 INFO  L87              Difference]: Start difference. First operand 50 states and 64 transitions. Second operand  has 13 states, 13 states have (on average 1.7692307692307692) internal successors, (23), 12 states have internal predecessors, (23), 1 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6)
[2024-11-06 08:01:31,925 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-06 08:01:31,925 INFO  L93              Difference]: Finished difference Result 128 states and 162 transitions.
[2024-11-06 08:01:31,926 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. 
[2024-11-06 08:01:31,926 INFO  L78                 Accepts]: Start accepts. Automaton has  has 13 states, 13 states have (on average 1.7692307692307692) internal successors, (23), 12 states have internal predecessors, (23), 1 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 47
[2024-11-06 08:01:31,927 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-06 08:01:31,928 INFO  L225             Difference]: With dead ends: 128
[2024-11-06 08:01:31,928 INFO  L226             Difference]: Without dead ends: 101
[2024-11-06 08:01:31,929 INFO  L431           NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=97, Invalid=245, Unknown=0, NotChecked=0, Total=342
[2024-11-06 08:01:31,930 INFO  L432           NwaCegarLoop]: 20 mSDtfsCounter, 53 mSDsluCounter, 150 mSDsCounter, 0 mSdLazyCounter, 177 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 170 SdHoareTripleChecker+Invalid, 196 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 177 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time
[2024-11-06 08:01:31,931 INFO  L433           NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 170 Invalid, 196 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 177 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time]
[2024-11-06 08:01:31,931 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 101 states.
[2024-11-06 08:01:31,945 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 75.
[2024-11-06 08:01:31,947 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 75 states, 53 states have (on average 1.1320754716981132) internal successors, (60), 53 states have internal predecessors, (60), 18 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18)
[2024-11-06 08:01:31,951 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 96 transitions.
[2024-11-06 08:01:31,951 INFO  L78                 Accepts]: Start accepts. Automaton has 75 states and 96 transitions. Word has length 47
[2024-11-06 08:01:31,952 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-06 08:01:31,952 INFO  L471      AbstractCegarLoop]: Abstraction has 75 states and 96 transitions.
[2024-11-06 08:01:31,952 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 13 states, 13 states have (on average 1.7692307692307692) internal successors, (23), 12 states have internal predecessors, (23), 1 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6)
[2024-11-06 08:01:31,952 INFO  L276                IsEmpty]: Start isEmpty. Operand 75 states and 96 transitions.
[2024-11-06 08:01:31,953 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 48
[2024-11-06 08:01:31,955 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-06 08:01:31,955 INFO  L215           NwaCegarLoop]: trace histogram [6, 6, 6, 1, 1, 1, 1, 1, 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 08:01:31,977 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 08:01:32,159 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 08:01:32,160 INFO  L396      AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-06 08:01:32,161 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-06 08:01:32,161 INFO  L85        PathProgramCache]: Analyzing trace with hash 1314746203, now seen corresponding path program 1 times
[2024-11-06 08:01:32,161 INFO  L118   FreeRefinementEngine]: Executing refinement strategy FOX
[2024-11-06 08:01:32,162 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1117128472]
[2024-11-06 08:01:32,162 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-06 08:01:32,162 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-06 08:01:32,162 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2024-11-06 08:01:32,168 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 08:01:32,170 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 08:01:32,238 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-06 08:01:32,241 INFO  L255         TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 17 conjuncts are in the unsatisfiable core
[2024-11-06 08:01:32,247 INFO  L278         TraceCheckSpWp]: Computing forward predicates...
[2024-11-06 08:01:54,444 INFO  L134       CoverageAnalysis]: Checked inductivity of 60 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked.
[2024-11-06 08:01:54,444 INFO  L307         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2024-11-06 08:01:54,445 INFO  L136   FreeRefinementEngine]: Strategy FOX found an infeasible trace
[2024-11-06 08:01:54,445 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1117128472]
[2024-11-06 08:01:54,445 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1117128472] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-06 08:01:54,445 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-06 08:01:54,445 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12
[2024-11-06 08:01:54,445 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2122003746]
[2024-11-06 08:01:54,446 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-06 08:01:54,446 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 13 states
[2024-11-06 08:01:54,446 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX
[2024-11-06 08:01:54,447 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants.
[2024-11-06 08:01:54,447 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156
[2024-11-06 08:01:54,447 INFO  L87              Difference]: Start difference. First operand 75 states and 96 transitions. Second operand  has 13 states, 13 states have (on average 1.7692307692307692) internal successors, (23), 12 states have internal predecessors, (23), 1 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6)
[2024-11-06 08:01:54,784 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-06 08:01:54,784 INFO  L93              Difference]: Finished difference Result 95 states and 117 transitions.
[2024-11-06 08:01:54,786 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. 
[2024-11-06 08:01:54,786 INFO  L78                 Accepts]: Start accepts. Automaton has  has 13 states, 13 states have (on average 1.7692307692307692) internal successors, (23), 12 states have internal predecessors, (23), 1 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 47
[2024-11-06 08:01:54,787 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-06 08:01:54,788 INFO  L225             Difference]: With dead ends: 95
[2024-11-06 08:01:54,788 INFO  L226             Difference]: Without dead ends: 93
[2024-11-06 08:01:54,789 INFO  L431           NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=97, Invalid=245, Unknown=0, NotChecked=0, Total=342
[2024-11-06 08:01:54,790 INFO  L432           NwaCegarLoop]: 24 mSDtfsCounter, 47 mSDsluCounter, 154 mSDsCounter, 0 mSdLazyCounter, 188 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 178 SdHoareTripleChecker+Invalid, 206 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 188 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2024-11-06 08:01:54,790 INFO  L433           NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 178 Invalid, 206 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 188 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2024-11-06 08:01:54,791 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 93 states.
[2024-11-06 08:01:54,804 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 70.
[2024-11-06 08:01:54,805 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 70 states, 48 states have (on average 1.125) internal successors, (54), 48 states have internal predecessors, (54), 18 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18)
[2024-11-06 08:01:54,806 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 90 transitions.
[2024-11-06 08:01:54,806 INFO  L78                 Accepts]: Start accepts. Automaton has 70 states and 90 transitions. Word has length 47
[2024-11-06 08:01:54,807 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-06 08:01:54,807 INFO  L471      AbstractCegarLoop]: Abstraction has 70 states and 90 transitions.
[2024-11-06 08:01:54,807 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 13 states, 13 states have (on average 1.7692307692307692) internal successors, (23), 12 states have internal predecessors, (23), 1 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6)
[2024-11-06 08:01:54,807 INFO  L276                IsEmpty]: Start isEmpty. Operand 70 states and 90 transitions.
[2024-11-06 08:01:54,809 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 92
[2024-11-06 08:01:54,809 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-06 08:01:54,809 INFO  L215           NwaCegarLoop]: trace histogram [12, 12, 12, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-06 08:01:54,825 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0
[2024-11-06 08:01:55,013 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 08:01:55,014 INFO  L396      AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-06 08:01:55,015 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-06 08:01:55,015 INFO  L85        PathProgramCache]: Analyzing trace with hash -14189008, now seen corresponding path program 1 times
[2024-11-06 08:01:55,015 INFO  L118   FreeRefinementEngine]: Executing refinement strategy FOX
[2024-11-06 08:01:55,015 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1401585037]
[2024-11-06 08:01:55,015 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-06 08:01:55,016 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-06 08:01:55,016 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2024-11-06 08:01:55,018 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 08:01:55,023 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 08:01:55,101 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-06 08:01:55,105 INFO  L255         TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 20 conjuncts are in the unsatisfiable core
[2024-11-06 08:01:55,111 INFO  L278         TraceCheckSpWp]: Computing forward predicates...
[2024-11-06 08:02:24,038 INFO  L134       CoverageAnalysis]: Checked inductivity of 283 backedges. 16 proven. 25 refuted. 0 times theorem prover too weak. 242 trivial. 0 not checked.
[2024-11-06 08:02:24,038 INFO  L311         TraceCheckSpWp]: Computing backward predicates...