/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-64.i


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


This is Ultimate 0.2.5-dev-17387ad-m
[2024-11-06 07:57:23,020 INFO  L188        SettingsManager]: Resetting all preferences to default values...
[2024-11-06 07:57:23,086 INFO  L114        SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf
[2024-11-06 07:57:23,092 WARN  L101        SettingsManager]: Preference file contains the following unknown settings:
[2024-11-06 07:57:23,093 WARN  L103        SettingsManager]:   * de.uni_freiburg.informatik.ultimate.core.Log level for class
[2024-11-06 07:57:23,119 INFO  L130        SettingsManager]: Preferences different from defaults after loading the file:
[2024-11-06 07:57:23,120 INFO  L151        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2024-11-06 07:57:23,120 INFO  L153        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2024-11-06 07:57:23,121 INFO  L151        SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults:
[2024-11-06 07:57:23,122 INFO  L153        SettingsManager]:  * Use memory slicer=true
[2024-11-06 07:57:23,123 INFO  L151        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2024-11-06 07:57:23,123 INFO  L153        SettingsManager]:  * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2024-11-06 07:57:23,123 INFO  L151        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2024-11-06 07:57:23,124 INFO  L153        SettingsManager]:  * Create parallel compositions if possible=false
[2024-11-06 07:57:23,124 INFO  L153        SettingsManager]:  * Use SBE=true
[2024-11-06 07:57:23,126 INFO  L151        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2024-11-06 07:57:23,126 INFO  L153        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2024-11-06 07:57:23,126 INFO  L153        SettingsManager]:  * sizeof long=4
[2024-11-06 07:57:23,126 INFO  L153        SettingsManager]:  * sizeof POINTER=4
[2024-11-06 07:57:23,127 INFO  L153        SettingsManager]:  * Check division by zero=IGNORE
[2024-11-06 07:57:23,127 INFO  L153        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2024-11-06 07:57:23,129 INFO  L153        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2024-11-06 07:57:23,129 INFO  L153        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2024-11-06 07:57:23,129 INFO  L153        SettingsManager]:  * Adapt memory model on pointer casts if necessary=true
[2024-11-06 07:57:23,129 INFO  L153        SettingsManager]:  * Use bitvectors instead of ints=true
[2024-11-06 07:57:23,130 INFO  L153        SettingsManager]:  * Allow undefined functions=false
[2024-11-06 07:57:23,130 INFO  L153        SettingsManager]:  * Memory model=HoenickeLindenmann_4ByteResolution
[2024-11-06 07:57:23,130 INFO  L153        SettingsManager]:  * sizeof long double=12
[2024-11-06 07:57:23,130 INFO  L153        SettingsManager]:  * Check if freed pointer was valid=false
[2024-11-06 07:57:23,130 INFO  L153        SettingsManager]:  * Use constant arrays=true
[2024-11-06 07:57:23,130 INFO  L151        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2024-11-06 07:57:23,130 INFO  L153        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2024-11-06 07:57:23,131 INFO  L153        SettingsManager]:  * Only consider context switches at boundaries of atomic blocks=true
[2024-11-06 07:57:23,131 INFO  L153        SettingsManager]:  * SMT solver=External_DefaultMode
[2024-11-06 07:57:23,131 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2024-11-06 07:57:23,131 INFO  L151        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2024-11-06 07:57:23,131 INFO  L153        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2024-11-06 07:57:23,131 INFO  L153        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopHeads
[2024-11-06 07:57:23,132 INFO  L153        SettingsManager]:  * Trace refinement strategy=WOLF
[2024-11-06 07:57:23,132 INFO  L153        SettingsManager]:  * Command for external solver=cvc4 --incremental --print-success --lang smt
[2024-11-06 07:57:23,132 INFO  L153        SettingsManager]:  * Apply one-shot large block encoding in concurrent analysis=false
[2024-11-06 07:57:23,133 INFO  L153        SettingsManager]:  * Automaton type used in concurrency analysis=PETRI_NET
[2024-11-06 07:57:23,133 INFO  L153        SettingsManager]:  * Order on configurations for Petri net unfoldings=DBO
[2024-11-06 07:57:23,134 INFO  L153        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2024-11-06 07:57:23,134 INFO  L153        SettingsManager]:  * Looper check in Petri net analysis=SEMANTIC
WARNING: An illegal reflective access operation has occurred
WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int)
WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Allow undefined functions -> true
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FOX
[2024-11-06 07:57:23,353 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2024-11-06 07:57:23,375 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2024-11-06 07:57:23,377 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2024-11-06 07:57:23,378 INFO  L270        PluginConnector]: Initializing CDTParser...
[2024-11-06 07:57:23,379 INFO  L274        PluginConnector]: CDTParser initialized
[2024-11-06 07:57:23,380 INFO  L431   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_floatingpointinfluence_no-floats_file-64.i
[2024-11-06 07:57:24,697 INFO  L533              CDTParser]: Created temporary CDT project at NULL
[2024-11-06 07:57:24,884 INFO  L384              CDTParser]: Found 1 translation units.
[2024-11-06 07:57:24,884 INFO  L180              CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_floatingpointinfluence_no-floats_file-64.i
[2024-11-06 07:57:24,892 INFO  L427              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8df20f0e8/a3549e7bd04344ae86494cc345253585/FLAG050048a4f
[2024-11-06 07:57:24,909 INFO  L435              CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8df20f0e8/a3549e7bd04344ae86494cc345253585
[2024-11-06 07:57:24,911 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2024-11-06 07:57:24,912 INFO  L133        ToolchainWalker]: Walking toolchain with 5 elements.
[2024-11-06 07:57:24,914 INFO  L112        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2024-11-06 07:57:24,914 INFO  L270        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2024-11-06 07:57:24,918 INFO  L274        PluginConnector]: CACSL2BoogieTranslator initialized
[2024-11-06 07:57:24,919 INFO  L184        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 07:57:24" (1/1) ...
[2024-11-06 07:57:24,919 INFO  L204        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@537c199 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:57:24, skipping insertion in model container
[2024-11-06 07:57:24,920 INFO  L184        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 07:57:24" (1/1) ...
[2024-11-06 07:57:24,942 INFO  L175         MainTranslator]: Built tables and reachable declarations
[2024-11-06 07:57:25,075 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-64.i[916,929]
[2024-11-06 07:57:25,109 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2024-11-06 07:57:25,123 INFO  L200         MainTranslator]: Completed pre-run
[2024-11-06 07:57:25,133 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-64.i[916,929]
[2024-11-06 07:57:25,151 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2024-11-06 07:57:25,169 INFO  L204         MainTranslator]: Completed translation
[2024-11-06 07:57:25,170 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:57:25 WrapperNode
[2024-11-06 07:57:25,170 INFO  L131        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2024-11-06 07:57:25,171 INFO  L112        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2024-11-06 07:57:25,171 INFO  L270        PluginConnector]: Initializing Boogie Procedure Inliner...
[2024-11-06 07:57:25,172 INFO  L274        PluginConnector]: Boogie Procedure Inliner initialized
[2024-11-06 07:57:25,177 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:57:25" (1/1) ...
[2024-11-06 07:57:25,187 INFO  L184        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:57:25" (1/1) ...
[2024-11-06 07:57:25,209 INFO  L138                Inliner]: procedures = 27, calls = 37, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 126
[2024-11-06 07:57:25,210 INFO  L131        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2024-11-06 07:57:25,210 INFO  L112        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2024-11-06 07:57:25,210 INFO  L270        PluginConnector]: Initializing Boogie Preprocessor...
[2024-11-06 07:57:25,210 INFO  L274        PluginConnector]: Boogie Preprocessor initialized
[2024-11-06 07:57:25,221 INFO  L184        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:57:25" (1/1) ...
[2024-11-06 07:57:25,221 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:57:25" (1/1) ...
[2024-11-06 07:57:25,224 INFO  L184        PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:57:25" (1/1) ...
[2024-11-06 07:57:25,233 INFO  L175           MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0].
[2024-11-06 07:57:25,234 INFO  L184        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:57:25" (1/1) ...
[2024-11-06 07:57:25,234 INFO  L184        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:57:25" (1/1) ...
[2024-11-06 07:57:25,241 INFO  L184        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:57:25" (1/1) ...
[2024-11-06 07:57:25,244 INFO  L184        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:57:25" (1/1) ...
[2024-11-06 07:57:25,247 INFO  L184        PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:57:25" (1/1) ...
[2024-11-06 07:57:25,250 INFO  L184        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:57:25" (1/1) ...
[2024-11-06 07:57:25,258 INFO  L131        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2024-11-06 07:57:25,259 INFO  L112        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2024-11-06 07:57:25,259 INFO  L270        PluginConnector]: Initializing RCFGBuilder...
[2024-11-06 07:57:25,259 INFO  L274        PluginConnector]: RCFGBuilder initialized
[2024-11-06 07:57:25,260 INFO  L184        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:57:25" (1/1) ...
[2024-11-06 07:57:25,272 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2024-11-06 07:57:25,283 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2024-11-06 07:57:25,304 INFO  L229       MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null)
[2024-11-06 07:57:25,312 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process
[2024-11-06 07:57:25,343 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2024-11-06 07:57:25,343 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0
[2024-11-06 07:57:25,344 INFO  L130     BoogieDeclarations]: Found specification of procedure assume_abort_if_not
[2024-11-06 07:57:25,344 INFO  L138     BoogieDeclarations]: Found implementation of procedure assume_abort_if_not
[2024-11-06 07:57:25,344 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2024-11-06 07:57:25,344 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2024-11-06 07:57:25,416 INFO  L238             CfgBuilder]: Building ICFG
[2024-11-06 07:57:25,418 INFO  L264             CfgBuilder]: Building CFG for each procedure with an implementation
[2024-11-06 07:57:25,770 INFO  L?                        ?]: Removed 14 outVars from TransFormulas that were not future-live.
[2024-11-06 07:57:25,771 INFO  L287             CfgBuilder]: Performing block encoding
[2024-11-06 07:57:25,783 INFO  L311             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2024-11-06 07:57:25,784 INFO  L316             CfgBuilder]: Removed 1 assume(true) statements.
[2024-11-06 07:57:25,784 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 07:57:25 BoogieIcfgContainer
[2024-11-06 07:57:25,784 INFO  L131        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2024-11-06 07:57:25,786 INFO  L112        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2024-11-06 07:57:25,786 INFO  L270        PluginConnector]: Initializing TraceAbstraction...
[2024-11-06 07:57:25,789 INFO  L274        PluginConnector]: TraceAbstraction initialized
[2024-11-06 07:57:25,789 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 07:57:24" (1/3) ...
[2024-11-06 07:57:25,790 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5db6dae4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 07:57:25, skipping insertion in model container
[2024-11-06 07:57:25,790 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:57:25" (2/3) ...
[2024-11-06 07:57:25,791 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5db6dae4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 07:57:25, skipping insertion in model container
[2024-11-06 07:57:25,791 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 07:57:25" (3/3) ...
[2024-11-06 07:57:25,792 INFO  L112   eAbstractionObserver]: Analyzing ICFG hardness_floatingpointinfluence_no-floats_file-64.i
[2024-11-06 07:57:25,806 INFO  L214   ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2024-11-06 07:57:25,806 INFO  L154   ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2024-11-06 07:57:25,859 INFO  L332      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2024-11-06 07:57:25,874 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;@4d01d839, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2024-11-06 07:57:25,875 INFO  L334      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2024-11-06 07:57:25,883 INFO  L276                IsEmpty]: Start isEmpty. Operand  has 63 states, 36 states have (on average 1.3611111111111112) internal successors, (49), 37 states have internal predecessors, (49), 24 states have call successors, (24), 1 states have call predecessors, (24), 1 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24)
[2024-11-06 07:57:25,896 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 146
[2024-11-06 07:57:25,896 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-06 07:57:25,896 INFO  L215           NwaCegarLoop]: trace histogram [24, 24, 24, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-06 07:57:25,898 INFO  L396      AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-06 07:57:25,902 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-06 07:57:25,904 INFO  L85        PathProgramCache]: Analyzing trace with hash -766407730, now seen corresponding path program 1 times
[2024-11-06 07:57:25,919 INFO  L118   FreeRefinementEngine]: Executing refinement strategy FOX
[2024-11-06 07:57:25,919 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1347478795]
[2024-11-06 07:57:25,920 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-06 07:57:25,921 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-06 07:57:25,921 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2024-11-06 07:57:25,923 INFO  L229       MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-06 07:57:25,924 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process
[2024-11-06 07:57:26,053 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-06 07:57:26,063 INFO  L255         TraceCheckSpWp]: Trace formula consists of 226 conjuncts, 1 conjuncts are in the unsatisfiable core
[2024-11-06 07:57:26,074 INFO  L278         TraceCheckSpWp]: Computing forward predicates...
[2024-11-06 07:57:26,107 INFO  L134       CoverageAnalysis]: Checked inductivity of 1104 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 1058 trivial. 0 not checked.
[2024-11-06 07:57:26,107 INFO  L307         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2024-11-06 07:57:26,108 INFO  L136   FreeRefinementEngine]: Strategy FOX found an infeasible trace
[2024-11-06 07:57:26,108 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1347478795]
[2024-11-06 07:57:26,108 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1347478795] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-06 07:57:26,109 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-06 07:57:26,109 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2024-11-06 07:57:26,110 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [500510289]
[2024-11-06 07:57:26,111 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-06 07:57:26,114 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 2 states
[2024-11-06 07:57:26,114 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX
[2024-11-06 07:57:26,134 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants.
[2024-11-06 07:57:26,134 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2024-11-06 07:57:26,136 INFO  L87              Difference]: Start difference. First operand  has 63 states, 36 states have (on average 1.3611111111111112) internal successors, (49), 37 states have internal predecessors, (49), 24 states have call successors, (24), 1 states have call predecessors, (24), 1 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) Second operand  has 2 states, 2 states have (on average 15.0) internal successors, (30), 2 states have internal predecessors, (30), 2 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (24), 1 states have call predecessors, (24), 2 states have call successors, (24)
[2024-11-06 07:57:26,165 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-06 07:57:26,165 INFO  L93              Difference]: Finished difference Result 119 states and 212 transitions.
[2024-11-06 07:57:26,166 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. 
[2024-11-06 07:57:26,167 INFO  L78                 Accepts]: Start accepts. Automaton has  has 2 states, 2 states have (on average 15.0) internal successors, (30), 2 states have internal predecessors, (30), 2 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (24), 1 states have call predecessors, (24), 2 states have call successors, (24) Word has length 145
[2024-11-06 07:57:26,168 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-06 07:57:26,173 INFO  L225             Difference]: With dead ends: 119
[2024-11-06 07:57:26,173 INFO  L226             Difference]: Without dead ends: 59
[2024-11-06 07:57:26,176 INFO  L431           NwaCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2024-11-06 07:57:26,180 INFO  L432           NwaCegarLoop]: 89 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 89 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2024-11-06 07:57:26,181 INFO  L433           NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 89 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2024-11-06 07:57:26,193 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 59 states.
[2024-11-06 07:57:26,213 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59.
[2024-11-06 07:57:26,215 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 59 states, 33 states have (on average 1.2424242424242424) internal successors, (41), 33 states have internal predecessors, (41), 24 states have call successors, (24), 1 states have call predecessors, (24), 1 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24)
[2024-11-06 07:57:26,216 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 89 transitions.
[2024-11-06 07:57:26,218 INFO  L78                 Accepts]: Start accepts. Automaton has 59 states and 89 transitions. Word has length 145
[2024-11-06 07:57:26,218 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-06 07:57:26,218 INFO  L471      AbstractCegarLoop]: Abstraction has 59 states and 89 transitions.
[2024-11-06 07:57:26,219 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 2 states, 2 states have (on average 15.0) internal successors, (30), 2 states have internal predecessors, (30), 2 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (24), 1 states have call predecessors, (24), 2 states have call successors, (24)
[2024-11-06 07:57:26,219 INFO  L276                IsEmpty]: Start isEmpty. Operand 59 states and 89 transitions.
[2024-11-06 07:57:26,221 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 146
[2024-11-06 07:57:26,221 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-06 07:57:26,222 INFO  L215           NwaCegarLoop]: trace histogram [24, 24, 24, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-06 07:57:26,241 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0
[2024-11-06 07:57:26,422 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-06 07:57:26,423 INFO  L396      AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-06 07:57:26,424 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-06 07:57:26,424 INFO  L85        PathProgramCache]: Analyzing trace with hash 1694646600, now seen corresponding path program 1 times
[2024-11-06 07:57:26,424 INFO  L118   FreeRefinementEngine]: Executing refinement strategy FOX
[2024-11-06 07:57:26,425 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [685284768]
[2024-11-06 07:57:26,425 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-06 07:57:26,425 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-06 07:57:26,425 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2024-11-06 07:57:26,427 INFO  L229       MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-06 07:57:26,429 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process
[2024-11-06 07:57:26,549 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-06 07:57:26,558 INFO  L255         TraceCheckSpWp]: Trace formula consists of 226 conjuncts, 14 conjuncts are in the unsatisfiable core
[2024-11-06 07:57:26,581 INFO  L278         TraceCheckSpWp]: Computing forward predicates...
[2024-11-06 07:57:37,563 INFO  L134       CoverageAnalysis]: Checked inductivity of 1104 backedges. 0 proven. 69 refuted. 0 times theorem prover too weak. 1035 trivial. 0 not checked.
[2024-11-06 07:57:37,563 INFO  L311         TraceCheckSpWp]: Computing backward predicates...
[2024-11-06 07:57:52,423 INFO  L136   FreeRefinementEngine]: Strategy FOX found an infeasible trace
[2024-11-06 07:57:52,423 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [685284768]
[2024-11-06 07:57:52,424 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [685284768] provided 0 perfect and 1 imperfect interpolant sequences
[2024-11-06 07:57:52,424 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1839616917]
[2024-11-06 07:57:52,424 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-06 07:57:52,424 INFO  L173          SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt
[2024-11-06 07:57:52,424 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4
[2024-11-06 07:57:52,430 INFO  L229       MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null)
[2024-11-06 07:57:52,432 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (4)] Waiting until timeout for monitored process
[2024-11-06 07:57:52,726 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-06 07:57:52,730 INFO  L255         TraceCheckSpWp]: Trace formula consists of 226 conjuncts, 14 conjuncts are in the unsatisfiable core
[2024-11-06 07:57:52,736 INFO  L278         TraceCheckSpWp]: Computing forward predicates...
[2024-11-06 07:58:02,076 INFO  L134       CoverageAnalysis]: Checked inductivity of 1104 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1104 trivial. 0 not checked.
[2024-11-06 07:58:02,076 INFO  L307         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2024-11-06 07:58:02,077 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1839616917] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-06 07:58:02,077 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2024-11-06 07:58:02,077 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [10] total 15
[2024-11-06 07:58:02,078 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1191186288]
[2024-11-06 07:58:02,078 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-06 07:58:02,083 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 10 states
[2024-11-06 07:58:02,083 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX
[2024-11-06 07:58:02,084 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants.
[2024-11-06 07:58:02,084 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=384, Unknown=0, NotChecked=0, Total=462
[2024-11-06 07:58:02,085 INFO  L87              Difference]: Start difference. First operand 59 states and 89 transitions. Second operand  has 10 states, 10 states have (on average 2.8) internal successors, (28), 9 states have internal predecessors, (28), 1 states have call successors, (24), 1 states have call predecessors, (24), 1 states have return successors, (24), 1 states have call predecessors, (24), 1 states have call successors, (24)
[2024-11-06 07:58:03,350 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-06 07:58:03,350 INFO  L93              Difference]: Finished difference Result 191 states and 287 transitions.
[2024-11-06 07:58:03,357 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2024-11-06 07:58:03,358 INFO  L78                 Accepts]: Start accepts. Automaton has  has 10 states, 10 states have (on average 2.8) internal successors, (28), 9 states have internal predecessors, (28), 1 states have call successors, (24), 1 states have call predecessors, (24), 1 states have return successors, (24), 1 states have call predecessors, (24), 1 states have call successors, (24) Word has length 145
[2024-11-06 07:58:03,359 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-06 07:58:03,361 INFO  L225             Difference]: With dead ends: 191
[2024-11-06 07:58:03,361 INFO  L226             Difference]: Without dead ends: 135
[2024-11-06 07:58:03,362 INFO  L431           NwaCegarLoop]: 0 DeclaredPredicates, 304 GetRequests, 279 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 148 ImplicationChecksByTransitivity, 5.1s TimeCoverageRelationStatistics Valid=120, Invalid=582, Unknown=0, NotChecked=0, Total=702
[2024-11-06 07:58:03,363 INFO  L432           NwaCegarLoop]: 77 mSDtfsCounter, 75 mSDsluCounter, 393 mSDsCounter, 0 mSdLazyCounter, 249 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 470 SdHoareTripleChecker+Invalid, 301 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 249 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time
[2024-11-06 07:58:03,364 INFO  L433           NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 470 Invalid, 301 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 249 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time]
[2024-11-06 07:58:03,364 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 135 states.
[2024-11-06 07:58:03,380 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 110.
[2024-11-06 07:58:03,381 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 110 states, 59 states have (on average 1.2033898305084745) internal successors, (71), 59 states have internal predecessors, (71), 48 states have call successors, (48), 2 states have call predecessors, (48), 2 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48)
[2024-11-06 07:58:03,383 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 167 transitions.
[2024-11-06 07:58:03,383 INFO  L78                 Accepts]: Start accepts. Automaton has 110 states and 167 transitions. Word has length 145
[2024-11-06 07:58:03,384 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-06 07:58:03,384 INFO  L471      AbstractCegarLoop]: Abstraction has 110 states and 167 transitions.
[2024-11-06 07:58:03,384 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 10 states, 10 states have (on average 2.8) internal successors, (28), 9 states have internal predecessors, (28), 1 states have call successors, (24), 1 states have call predecessors, (24), 1 states have return successors, (24), 1 states have call predecessors, (24), 1 states have call successors, (24)
[2024-11-06 07:58:03,384 INFO  L276                IsEmpty]: Start isEmpty. Operand 110 states and 167 transitions.
[2024-11-06 07:58:03,386 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 147
[2024-11-06 07:58:03,386 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-06 07:58:03,386 INFO  L215           NwaCegarLoop]: trace histogram [24, 24, 24, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-06 07:58:03,406 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 07:58:03,593 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (4)] Ended with exit code 0
[2024-11-06 07:58:03,787 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,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt
[2024-11-06 07:58:03,788 INFO  L396      AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-06 07:58:03,789 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-06 07:58:03,789 INFO  L85        PathProgramCache]: Analyzing trace with hash 760723816, now seen corresponding path program 1 times
[2024-11-06 07:58:03,789 INFO  L118   FreeRefinementEngine]: Executing refinement strategy FOX
[2024-11-06 07:58:03,789 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [111343437]
[2024-11-06 07:58:03,789 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-06 07:58:03,790 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-06 07:58:03,790 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2024-11-06 07:58:03,792 INFO  L229       MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-06 07:58:03,793 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process
[2024-11-06 07:58:03,875 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-06 07:58:03,884 INFO  L255         TraceCheckSpWp]: Trace formula consists of 228 conjuncts, 2 conjuncts are in the unsatisfiable core
[2024-11-06 07:58:03,888 INFO  L278         TraceCheckSpWp]: Computing forward predicates...
[2024-11-06 07:58:04,078 INFO  L134       CoverageAnalysis]: Checked inductivity of 1104 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1104 trivial. 0 not checked.
[2024-11-06 07:58:04,079 INFO  L307         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2024-11-06 07:58:04,079 INFO  L136   FreeRefinementEngine]: Strategy FOX found an infeasible trace
[2024-11-06 07:58:04,079 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [111343437]
[2024-11-06 07:58:04,079 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [111343437] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-06 07:58:04,079 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-06 07:58:04,080 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2024-11-06 07:58:04,080 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1675030701]
[2024-11-06 07:58:04,080 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-06 07:58:04,080 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2024-11-06 07:58:04,080 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX
[2024-11-06 07:58:04,081 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2024-11-06 07:58:04,083 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2024-11-06 07:58:04,083 INFO  L87              Difference]: Start difference. First operand 110 states and 167 transitions. Second operand  has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 2 states have internal predecessors, (29), 1 states have call successors, (24), 1 states have call predecessors, (24), 1 states have return successors, (24), 1 states have call predecessors, (24), 1 states have call successors, (24)
[2024-11-06 07:58:04,138 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-06 07:58:04,138 INFO  L93              Difference]: Finished difference Result 169 states and 256 transitions.
[2024-11-06 07:58:04,146 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2024-11-06 07:58:04,147 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 2 states have internal predecessors, (29), 1 states have call successors, (24), 1 states have call predecessors, (24), 1 states have return successors, (24), 1 states have call predecessors, (24), 1 states have call successors, (24) Word has length 146
[2024-11-06 07:58:04,148 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-06 07:58:04,149 INFO  L225             Difference]: With dead ends: 169
[2024-11-06 07:58:04,149 INFO  L226             Difference]: Without dead ends: 109
[2024-11-06 07:58:04,150 INFO  L431           NwaCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2024-11-06 07:58:04,152 INFO  L432           NwaCegarLoop]: 82 mSDtfsCounter, 14 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 82 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2024-11-06 07:58:04,153 INFO  L433           NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 82 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2024-11-06 07:58:04,153 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 109 states.
[2024-11-06 07:58:04,173 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 108.
[2024-11-06 07:58:04,174 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 108 states, 57 states have (on average 1.1228070175438596) internal successors, (64), 57 states have internal predecessors, (64), 48 states have call successors, (48), 2 states have call predecessors, (48), 2 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48)
[2024-11-06 07:58:04,175 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 160 transitions.
[2024-11-06 07:58:04,176 INFO  L78                 Accepts]: Start accepts. Automaton has 108 states and 160 transitions. Word has length 146
[2024-11-06 07:58:04,176 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-06 07:58:04,176 INFO  L471      AbstractCegarLoop]: Abstraction has 108 states and 160 transitions.
[2024-11-06 07:58:04,177 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 2 states have internal predecessors, (29), 1 states have call successors, (24), 1 states have call predecessors, (24), 1 states have return successors, (24), 1 states have call predecessors, (24), 1 states have call successors, (24)
[2024-11-06 07:58:04,177 INFO  L276                IsEmpty]: Start isEmpty. Operand 108 states and 160 transitions.
[2024-11-06 07:58:04,178 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 147
[2024-11-06 07:58:04,178 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-06 07:58:04,178 INFO  L215           NwaCegarLoop]: trace histogram [24, 24, 24, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-06 07:58:04,197 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0
[2024-11-06 07:58:04,379 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-06 07:58:04,380 INFO  L396      AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-06 07:58:04,380 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-06 07:58:04,380 INFO  L85        PathProgramCache]: Analyzing trace with hash 2124128555, now seen corresponding path program 1 times
[2024-11-06 07:58:04,381 INFO  L118   FreeRefinementEngine]: Executing refinement strategy FOX
[2024-11-06 07:58:04,381 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1147825756]
[2024-11-06 07:58:04,381 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-06 07:58:04,381 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-06 07:58:04,381 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2024-11-06 07:58:04,383 INFO  L229       MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-06 07:58:04,384 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process
[2024-11-06 07:58:04,464 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-06 07:58:04,474 INFO  L255         TraceCheckSpWp]: Trace formula consists of 228 conjuncts, 11 conjuncts are in the unsatisfiable core
[2024-11-06 07:58:04,481 INFO  L278         TraceCheckSpWp]: Computing forward predicates...
[2024-11-06 07:58:11,412 INFO  L134       CoverageAnalysis]: Checked inductivity of 1104 backedges. 0 proven. 69 refuted. 0 times theorem prover too weak. 1035 trivial. 0 not checked.
[2024-11-06 07:58:11,412 INFO  L311         TraceCheckSpWp]: Computing backward predicates...
[2024-11-06 07:58:33,424 INFO  L134       CoverageAnalysis]: Checked inductivity of 1104 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1104 trivial. 0 not checked.
[2024-11-06 07:58:33,426 INFO  L136   FreeRefinementEngine]: Strategy FOX found an infeasible trace
[2024-11-06 07:58:33,427 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1147825756]
[2024-11-06 07:58:33,427 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1147825756] provided 1 perfect and 1 imperfect interpolant sequences
[2024-11-06 07:58:33,427 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2024-11-06 07:58:33,427 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8] total 11
[2024-11-06 07:58:33,427 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [694901143]
[2024-11-06 07:58:33,427 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-06 07:58:33,428 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2024-11-06 07:58:33,428 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX
[2024-11-06 07:58:33,428 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2024-11-06 07:58:33,428 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110
[2024-11-06 07:58:33,429 INFO  L87              Difference]: Start difference. First operand 108 states and 160 transitions. Second operand  has 7 states, 7 states have (on average 4.142857142857143) internal successors, (29), 7 states have internal predecessors, (29), 1 states have call successors, (24), 1 states have call predecessors, (24), 1 states have return successors, (24), 1 states have call predecessors, (24), 1 states have call successors, (24)
[2024-11-06 07:58:33,740 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-06 07:58:33,740 INFO  L93              Difference]: Finished difference Result 144 states and 209 transitions.
[2024-11-06 07:58:33,740 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. 
[2024-11-06 07:58:33,740 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 4.142857142857143) internal successors, (29), 7 states have internal predecessors, (29), 1 states have call successors, (24), 1 states have call predecessors, (24), 1 states have return successors, (24), 1 states have call predecessors, (24), 1 states have call successors, (24) Word has length 146
[2024-11-06 07:58:33,741 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-06 07:58:33,742 INFO  L225             Difference]: With dead ends: 144
[2024-11-06 07:58:33,742 INFO  L226             Difference]: Without dead ends: 142
[2024-11-06 07:58:33,743 INFO  L431           NwaCegarLoop]: 0 DeclaredPredicates, 292 GetRequests, 280 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156
[2024-11-06 07:58:33,743 INFO  L432           NwaCegarLoop]: 122 mSDtfsCounter, 83 mSDsluCounter, 295 mSDsCounter, 0 mSdLazyCounter, 150 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 417 SdHoareTripleChecker+Invalid, 152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 150 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time
[2024-11-06 07:58:33,743 INFO  L433           NwaCegarLoop]: SdHoareTripleChecker [83 Valid, 417 Invalid, 152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 150 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time]
[2024-11-06 07:58:33,744 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 142 states.
[2024-11-06 07:58:33,773 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 141.
[2024-11-06 07:58:33,774 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 141 states, 76 states have (on average 1.105263157894737) internal successors, (84), 77 states have internal predecessors, (84), 61 states have call successors, (61), 3 states have call predecessors, (61), 3 states have return successors, (61), 60 states have call predecessors, (61), 61 states have call successors, (61)
[2024-11-06 07:58:33,780 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 206 transitions.
[2024-11-06 07:58:33,781 INFO  L78                 Accepts]: Start accepts. Automaton has 141 states and 206 transitions. Word has length 146
[2024-11-06 07:58:33,781 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-06 07:58:33,781 INFO  L471      AbstractCegarLoop]: Abstraction has 141 states and 206 transitions.
[2024-11-06 07:58:33,782 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 4.142857142857143) internal successors, (29), 7 states have internal predecessors, (29), 1 states have call successors, (24), 1 states have call predecessors, (24), 1 states have return successors, (24), 1 states have call predecessors, (24), 1 states have call successors, (24)
[2024-11-06 07:58:33,782 INFO  L276                IsEmpty]: Start isEmpty. Operand 141 states and 206 transitions.
[2024-11-06 07:58:33,790 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 148
[2024-11-06 07:58:33,790 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-06 07:58:33,790 INFO  L215           NwaCegarLoop]: trace histogram [24, 24, 24, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-06 07:58:33,808 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0
[2024-11-06 07:58:33,990 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-06 07:58:33,991 INFO  L396      AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-06 07:58:33,991 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-06 07:58:33,991 INFO  L85        PathProgramCache]: Analyzing trace with hash -1793484961, now seen corresponding path program 1 times
[2024-11-06 07:58:33,992 INFO  L118   FreeRefinementEngine]: Executing refinement strategy FOX
[2024-11-06 07:58:33,992 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1512068922]
[2024-11-06 07:58:33,992 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-06 07:58:33,992 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-06 07:58:33,992 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2024-11-06 07:58:33,999 INFO  L229       MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-06 07:58:34,000 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process
[2024-11-06 07:58:34,084 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-06 07:58:34,092 INFO  L255         TraceCheckSpWp]: Trace formula consists of 228 conjuncts, 18 conjuncts are in the unsatisfiable core
[2024-11-06 07:58:34,096 INFO  L278         TraceCheckSpWp]: Computing forward predicates...
[2024-11-06 07:58:41,009 INFO  L134       CoverageAnalysis]: Checked inductivity of 1104 backedges. 129 proven. 129 refuted. 0 times theorem prover too weak. 846 trivial. 0 not checked.
[2024-11-06 07:58:41,010 INFO  L311         TraceCheckSpWp]: Computing backward predicates...