/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --cacsl2boogietranslator.allow.undefined.functions true --traceabstraction.smt.solver External_ModelsAndUnsatCoreMode --traceabstraction.command.for.external.solver 'cvc4 --incremental --print-success --lang smt' -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf -i ../../../trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount100_file-32.i


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


This is Ultimate 0.2.5-dev-b75d321-m
[2024-11-03 00:56:45,053 INFO  L188        SettingsManager]: Resetting all preferences to default values...
[2024-11-03 00:56:45,124 INFO  L114        SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf
[2024-11-03 00:56:45,131 WARN  L101        SettingsManager]: Preference file contains the following unknown settings:
[2024-11-03 00:56:45,131 WARN  L103        SettingsManager]:   * de.uni_freiburg.informatik.ultimate.core.Log level for class
[2024-11-03 00:56:45,158 INFO  L130        SettingsManager]: Preferences different from defaults after loading the file:
[2024-11-03 00:56:45,158 INFO  L151        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2024-11-03 00:56:45,159 INFO  L153        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2024-11-03 00:56:45,159 INFO  L151        SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults:
[2024-11-03 00:56:45,160 INFO  L153        SettingsManager]:  * Use memory slicer=true
[2024-11-03 00:56:45,160 INFO  L151        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2024-11-03 00:56:45,160 INFO  L153        SettingsManager]:  * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2024-11-03 00:56:45,161 INFO  L151        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2024-11-03 00:56:45,161 INFO  L153        SettingsManager]:  * Create parallel compositions if possible=false
[2024-11-03 00:56:45,161 INFO  L153        SettingsManager]:  * Use SBE=true
[2024-11-03 00:56:45,162 INFO  L151        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2024-11-03 00:56:45,162 INFO  L153        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2024-11-03 00:56:45,162 INFO  L153        SettingsManager]:  * sizeof long=4
[2024-11-03 00:56:45,163 INFO  L153        SettingsManager]:  * sizeof POINTER=4
[2024-11-03 00:56:45,163 INFO  L153        SettingsManager]:  * Check division by zero=IGNORE
[2024-11-03 00:56:45,163 INFO  L153        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2024-11-03 00:56:45,164 INFO  L153        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2024-11-03 00:56:45,164 INFO  L153        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2024-11-03 00:56:45,165 INFO  L153        SettingsManager]:  * Adapt memory model on pointer casts if necessary=true
[2024-11-03 00:56:45,165 INFO  L153        SettingsManager]:  * Use bitvectors instead of ints=true
[2024-11-03 00:56:45,165 INFO  L153        SettingsManager]:  * Allow undefined functions=false
[2024-11-03 00:56:45,166 INFO  L153        SettingsManager]:  * Memory model=HoenickeLindenmann_4ByteResolution
[2024-11-03 00:56:45,166 INFO  L153        SettingsManager]:  * sizeof long double=12
[2024-11-03 00:56:45,166 INFO  L153        SettingsManager]:  * Check if freed pointer was valid=false
[2024-11-03 00:56:45,167 INFO  L153        SettingsManager]:  * Use constant arrays=true
[2024-11-03 00:56:45,167 INFO  L151        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2024-11-03 00:56:45,170 INFO  L153        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2024-11-03 00:56:45,170 INFO  L153        SettingsManager]:  * Only consider context switches at boundaries of atomic blocks=true
[2024-11-03 00:56:45,171 INFO  L153        SettingsManager]:  * SMT solver=External_DefaultMode
[2024-11-03 00:56:45,171 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2024-11-03 00:56:45,171 INFO  L151        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2024-11-03 00:56:45,171 INFO  L153        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2024-11-03 00:56:45,172 INFO  L153        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopHeads
[2024-11-03 00:56:45,172 INFO  L153        SettingsManager]:  * Trace refinement strategy=WOLF
[2024-11-03 00:56:45,172 INFO  L153        SettingsManager]:  * Command for external solver=cvc4 --incremental --print-success --lang smt
[2024-11-03 00:56:45,172 INFO  L153        SettingsManager]:  * Apply one-shot large block encoding in concurrent analysis=false
[2024-11-03 00:56:45,173 INFO  L153        SettingsManager]:  * Automaton type used in concurrency analysis=PETRI_NET
[2024-11-03 00:56:45,173 INFO  L153        SettingsManager]:  * Order on configurations for Petri net unfoldings=DBO
[2024-11-03 00:56:45,173 INFO  L153        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2024-11-03 00:56:45,174 INFO  L153        SettingsManager]:  * Looper check in Petri net analysis=SEMANTIC
WARNING: An illegal reflective access operation has occurred
WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int)
WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Allow undefined functions -> true
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> External_ModelsAndUnsatCoreMode
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Command for external solver -> cvc4 --incremental --print-success --lang smt
[2024-11-03 00:56:45,430 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2024-11-03 00:56:45,456 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2024-11-03 00:56:45,459 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2024-11-03 00:56:45,460 INFO  L270        PluginConnector]: Initializing CDTParser...
[2024-11-03 00:56:45,460 INFO  L274        PluginConnector]: CDTParser initialized
[2024-11-03 00:56:45,461 INFO  L431   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount100_file-32.i
[2024-11-03 00:56:47,059 INFO  L533              CDTParser]: Created temporary CDT project at NULL
[2024-11-03 00:56:47,285 INFO  L384              CDTParser]: Found 1 translation units.
[2024-11-03 00:56:47,285 INFO  L180              CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount100_file-32.i
[2024-11-03 00:56:47,303 INFO  L427              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c3035a802/40bfb521a8264690b03f992a910f71d8/FLAG768b68a5e
[2024-11-03 00:56:47,321 INFO  L435              CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c3035a802/40bfb521a8264690b03f992a910f71d8
[2024-11-03 00:56:47,324 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2024-11-03 00:56:47,326 INFO  L133        ToolchainWalker]: Walking toolchain with 5 elements.
[2024-11-03 00:56:47,328 INFO  L112        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2024-11-03 00:56:47,329 INFO  L270        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2024-11-03 00:56:47,334 INFO  L274        PluginConnector]: CACSL2BoogieTranslator initialized
[2024-11-03 00:56:47,335 INFO  L184        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 12:56:47" (1/1) ...
[2024-11-03 00:56:47,336 INFO  L204        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@67f48401 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:56:47, skipping insertion in model container
[2024-11-03 00:56:47,336 INFO  L184        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 12:56:47" (1/1) ...
[2024-11-03 00:56:47,376 INFO  L175         MainTranslator]: Built tables and reachable declarations
[2024-11-03 00:56:47,557 WARN  L250   ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount100_file-32.i[916,929]
[2024-11-03 00:56:47,659 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2024-11-03 00:56:47,674 INFO  L200         MainTranslator]: Completed pre-run
[2024-11-03 00:56:47,687 WARN  L250   ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount100_file-32.i[916,929]
[2024-11-03 00:56:47,741 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2024-11-03 00:56:47,762 INFO  L204         MainTranslator]: Completed translation
[2024-11-03 00:56:47,763 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:56:47 WrapperNode
[2024-11-03 00:56:47,763 INFO  L131        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2024-11-03 00:56:47,764 INFO  L112        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2024-11-03 00:56:47,764 INFO  L270        PluginConnector]: Initializing Boogie Procedure Inliner...
[2024-11-03 00:56:47,764 INFO  L274        PluginConnector]: Boogie Procedure Inliner initialized
[2024-11-03 00:56:47,771 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:56:47" (1/1) ...
[2024-11-03 00:56:47,784 INFO  L184        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:56:47" (1/1) ...
[2024-11-03 00:56:47,814 INFO  L138                Inliner]: procedures = 27, calls = 48, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 213
[2024-11-03 00:56:47,815 INFO  L131        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2024-11-03 00:56:47,815 INFO  L112        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2024-11-03 00:56:47,816 INFO  L270        PluginConnector]: Initializing Boogie Preprocessor...
[2024-11-03 00:56:47,816 INFO  L274        PluginConnector]: Boogie Preprocessor initialized
[2024-11-03 00:56:47,827 INFO  L184        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:56:47" (1/1) ...
[2024-11-03 00:56:47,827 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:56:47" (1/1) ...
[2024-11-03 00:56:47,832 INFO  L184        PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:56:47" (1/1) ...
[2024-11-03 00:56:47,866 INFO  L175           MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0].
[2024-11-03 00:56:47,867 INFO  L184        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:56:47" (1/1) ...
[2024-11-03 00:56:47,867 INFO  L184        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:56:47" (1/1) ...
[2024-11-03 00:56:47,892 INFO  L184        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:56:47" (1/1) ...
[2024-11-03 00:56:47,900 INFO  L184        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:56:47" (1/1) ...
[2024-11-03 00:56:47,906 INFO  L184        PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:56:47" (1/1) ...
[2024-11-03 00:56:47,908 INFO  L184        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:56:47" (1/1) ...
[2024-11-03 00:56:47,913 INFO  L131        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2024-11-03 00:56:47,915 INFO  L112        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2024-11-03 00:56:47,915 INFO  L270        PluginConnector]: Initializing RCFGBuilder...
[2024-11-03 00:56:47,915 INFO  L274        PluginConnector]: RCFGBuilder initialized
[2024-11-03 00:56:47,916 INFO  L184        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:56:47" (1/1) ...
[2024-11-03 00:56:47,921 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2024-11-03 00:56:47,936 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2024-11-03 00:56:47,953 INFO  L229       MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null)
[2024-11-03 00:56:47,959 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process
[2024-11-03 00:56:47,987 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2024-11-03 00:56:47,987 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0
[2024-11-03 00:56:47,987 INFO  L130     BoogieDeclarations]: Found specification of procedure assume_abort_if_not
[2024-11-03 00:56:47,987 INFO  L138     BoogieDeclarations]: Found implementation of procedure assume_abort_if_not
[2024-11-03 00:56:47,987 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2024-11-03 00:56:47,988 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2024-11-03 00:56:48,117 INFO  L238             CfgBuilder]: Building ICFG
[2024-11-03 00:56:48,120 INFO  L264             CfgBuilder]: Building CFG for each procedure with an implementation
[2024-11-03 00:56:48,967 INFO  L?                        ?]: Removed 20 outVars from TransFormulas that were not future-live.
[2024-11-03 00:56:48,967 INFO  L287             CfgBuilder]: Performing block encoding
[2024-11-03 00:56:48,985 INFO  L311             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2024-11-03 00:56:48,985 INFO  L316             CfgBuilder]: Removed 1 assume(true) statements.
[2024-11-03 00:56:48,986 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 12:56:48 BoogieIcfgContainer
[2024-11-03 00:56:48,986 INFO  L131        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2024-11-03 00:56:48,988 INFO  L112        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2024-11-03 00:56:48,988 INFO  L270        PluginConnector]: Initializing TraceAbstraction...
[2024-11-03 00:56:48,992 INFO  L274        PluginConnector]: TraceAbstraction initialized
[2024-11-03 00:56:48,992 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 12:56:47" (1/3) ...
[2024-11-03 00:56:48,993 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6db946aa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 12:56:48, skipping insertion in model container
[2024-11-03 00:56:48,993 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:56:47" (2/3) ...
[2024-11-03 00:56:48,993 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6db946aa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 12:56:48, skipping insertion in model container
[2024-11-03 00:56:48,993 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 12:56:48" (3/3) ...
[2024-11-03 00:56:48,994 INFO  L112   eAbstractionObserver]: Analyzing ICFG hardness_operatoramount_amount100_file-32.i
[2024-11-03 00:56:49,011 INFO  L214   ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2024-11-03 00:56:49,012 INFO  L154   ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2024-11-03 00:56:49,077 INFO  L332      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2024-11-03 00:56:49,082 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;@52e891be, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2024-11-03 00:56:49,082 INFO  L334      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2024-11-03 00:56:49,086 INFO  L276                IsEmpty]: Start isEmpty. Operand  has 96 states, 58 states have (on average 1.4310344827586208) internal successors, (83), 59 states have internal predecessors, (83), 35 states have call successors, (35), 1 states have call predecessors, (35), 1 states have return successors, (35), 35 states have call predecessors, (35), 35 states have call successors, (35)
[2024-11-03 00:56:49,100 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 218
[2024-11-03 00:56:49,101 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-03 00:56:49,101 INFO  L215           NwaCegarLoop]: trace histogram [35, 35, 35, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-03 00:56:49,102 INFO  L396      AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-03 00:56:49,106 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-03 00:56:49,107 INFO  L85        PathProgramCache]: Analyzing trace with hash 870512893, now seen corresponding path program 1 times
[2024-11-03 00:56:49,113 INFO  L118   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2024-11-03 00:56:49,113 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1793006120]
[2024-11-03 00:56:49,114 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-03 00:56:49,116 INFO  L173          SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt
[2024-11-03 00:56:49,116 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4
[2024-11-03 00:56:49,117 INFO  L229       MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null)
[2024-11-03 00:56:49,119 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (2)] Waiting until timeout for monitored process
[2024-11-03 00:56:49,575 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-03 00:56:49,583 INFO  L255         TraceCheckSpWp]: Trace formula consists of 350 conjuncts, 1 conjuncts are in the unsatisfiable core
[2024-11-03 00:56:49,596 INFO  L278         TraceCheckSpWp]: Computing forward predicates...
[2024-11-03 00:56:49,681 INFO  L134       CoverageAnalysis]: Checked inductivity of 2380 backedges. 68 proven. 0 refuted. 0 times theorem prover too weak. 2312 trivial. 0 not checked.
[2024-11-03 00:56:49,681 INFO  L311         TraceCheckSpWp]: Computing backward predicates...
[2024-11-03 00:56:50,037 INFO  L134       CoverageAnalysis]: Checked inductivity of 2380 backedges. 68 proven. 0 refuted. 0 times theorem prover too weak. 2312 trivial. 0 not checked.
[2024-11-03 00:56:50,038 INFO  L136   FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2024-11-03 00:56:50,038 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1793006120]
[2024-11-03 00:56:50,039 INFO  L158   FreeRefinementEngine]: IpTcStrategyModulePreferences [1793006120] provided 2 perfect and 0 imperfect interpolant sequences
[2024-11-03 00:56:50,039 INFO  L185   FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences.
[2024-11-03 00:56:50,039 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2
[2024-11-03 00:56:50,043 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [992121995]
[2024-11-03 00:56:50,044 INFO  L85    oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton
[2024-11-03 00:56:50,049 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 2 states
[2024-11-03 00:56:50,051 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2024-11-03 00:56:50,088 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants.
[2024-11-03 00:56:50,088 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2024-11-03 00:56:50,090 INFO  L87              Difference]: Start difference. First operand  has 96 states, 58 states have (on average 1.4310344827586208) internal successors, (83), 59 states have internal predecessors, (83), 35 states have call successors, (35), 1 states have call predecessors, (35), 1 states have return successors, (35), 35 states have call predecessors, (35), 35 states have call successors, (35) Second operand  has 2 states, 2 states have (on average 23.5) internal successors, (47), 2 states have internal predecessors, (47), 1 states have call successors, (35), 1 states have call predecessors, (35), 2 states have return successors, (35), 2 states have call predecessors, (35), 1 states have call successors, (35)
[2024-11-03 00:56:50,127 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-03 00:56:50,127 INFO  L93              Difference]: Finished difference Result 185 states and 335 transitions.
[2024-11-03 00:56:50,128 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. 
[2024-11-03 00:56:50,130 INFO  L78                 Accepts]: Start accepts. Automaton has  has 2 states, 2 states have (on average 23.5) internal successors, (47), 2 states have internal predecessors, (47), 1 states have call successors, (35), 1 states have call predecessors, (35), 2 states have return successors, (35), 2 states have call predecessors, (35), 1 states have call successors, (35) Word has length 217
[2024-11-03 00:56:50,130 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-03 00:56:50,137 INFO  L225             Difference]: With dead ends: 185
[2024-11-03 00:56:50,137 INFO  L226             Difference]: Without dead ends: 92
[2024-11-03 00:56:50,141 INFO  L431           NwaCegarLoop]: 0 DeclaredPredicates, 432 GetRequests, 432 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2024-11-03 00:56:50,144 INFO  L432           NwaCegarLoop]: 146 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, 146 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2024-11-03 00:56:50,145 INFO  L433           NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 146 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2024-11-03 00:56:50,161 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 92 states.
[2024-11-03 00:56:50,200 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 92.
[2024-11-03 00:56:50,201 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 92 states, 55 states have (on average 1.3818181818181818) internal successors, (76), 55 states have internal predecessors, (76), 35 states have call successors, (35), 1 states have call predecessors, (35), 1 states have return successors, (35), 35 states have call predecessors, (35), 35 states have call successors, (35)
[2024-11-03 00:56:50,207 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 146 transitions.
[2024-11-03 00:56:50,213 INFO  L78                 Accepts]: Start accepts. Automaton has 92 states and 146 transitions. Word has length 217
[2024-11-03 00:56:50,214 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-03 00:56:50,214 INFO  L471      AbstractCegarLoop]: Abstraction has 92 states and 146 transitions.
[2024-11-03 00:56:50,214 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 2 states, 2 states have (on average 23.5) internal successors, (47), 2 states have internal predecessors, (47), 1 states have call successors, (35), 1 states have call predecessors, (35), 2 states have return successors, (35), 2 states have call predecessors, (35), 1 states have call successors, (35)
[2024-11-03 00:56:50,215 INFO  L276                IsEmpty]: Start isEmpty. Operand 92 states and 146 transitions.
[2024-11-03 00:56:50,220 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 218
[2024-11-03 00:56:50,220 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-03 00:56:50,221 INFO  L215           NwaCegarLoop]: trace histogram [35, 35, 35, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-03 00:56:50,232 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (2)] Ended with exit code 0
[2024-11-03 00:56:50,421 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt
[2024-11-03 00:56:50,422 INFO  L396      AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-03 00:56:50,423 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-03 00:56:50,423 INFO  L85        PathProgramCache]: Analyzing trace with hash 192119231, now seen corresponding path program 1 times
[2024-11-03 00:56:50,423 INFO  L118   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2024-11-03 00:56:50,423 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [683141251]
[2024-11-03 00:56:50,423 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-03 00:56:50,423 INFO  L173          SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt
[2024-11-03 00:56:50,424 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4
[2024-11-03 00:56:50,425 INFO  L229       MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null)
[2024-11-03 00:56:50,426 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (3)] Waiting until timeout for monitored process
[2024-11-03 00:56:51,285 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-03 00:56:51,318 INFO  L255         TraceCheckSpWp]: Trace formula consists of 350 conjuncts, 5 conjuncts are in the unsatisfiable core
[2024-11-03 00:56:51,329 INFO  L278         TraceCheckSpWp]: Computing forward predicates...
[2024-11-03 00:56:51,918 INFO  L134       CoverageAnalysis]: Checked inductivity of 2380 backedges. 412 proven. 93 refuted. 0 times theorem prover too weak. 1875 trivial. 0 not checked.
[2024-11-03 00:56:51,919 INFO  L311         TraceCheckSpWp]: Computing backward predicates...
[2024-11-03 00:56:52,387 INFO  L134       CoverageAnalysis]: Checked inductivity of 2380 backedges. 9 proven. 93 refuted. 0 times theorem prover too weak. 2278 trivial. 0 not checked.
[2024-11-03 00:56:52,388 INFO  L136   FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2024-11-03 00:56:52,388 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [683141251]
[2024-11-03 00:56:52,388 INFO  L158   FreeRefinementEngine]: IpTcStrategyModulePreferences [683141251] provided 0 perfect and 2 imperfect interpolant sequences
[2024-11-03 00:56:52,388 INFO  L185   FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2024-11-03 00:56:52,388 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7
[2024-11-03 00:56:52,389 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1146776264]
[2024-11-03 00:56:52,389 INFO  L85    oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2024-11-03 00:56:52,393 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2024-11-03 00:56:52,393 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2024-11-03 00:56:52,394 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2024-11-03 00:56:52,395 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42
[2024-11-03 00:56:52,395 INFO  L87              Difference]: Start difference. First operand 92 states and 146 transitions. Second operand  has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 2 states have call successors, (66), 2 states have call predecessors, (66), 4 states have return successors, (67), 2 states have call predecessors, (67), 2 states have call successors, (67)
[2024-11-03 00:56:53,146 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-03 00:56:53,146 INFO  L93              Difference]: Finished difference Result 189 states and 296 transitions.
[2024-11-03 00:56:53,166 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. 
[2024-11-03 00:56:53,167 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 2 states have call successors, (66), 2 states have call predecessors, (66), 4 states have return successors, (67), 2 states have call predecessors, (67), 2 states have call successors, (67) Word has length 217
[2024-11-03 00:56:53,168 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-03 00:56:53,170 INFO  L225             Difference]: With dead ends: 189
[2024-11-03 00:56:53,170 INFO  L226             Difference]: Without dead ends: 100
[2024-11-03 00:56:53,172 INFO  L431           NwaCegarLoop]: 0 DeclaredPredicates, 436 GetRequests, 426 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110
[2024-11-03 00:56:53,173 INFO  L432           NwaCegarLoop]: 105 mSDtfsCounter, 56 mSDsluCounter, 140 mSDsCounter, 0 mSdLazyCounter, 194 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 245 SdHoareTripleChecker+Invalid, 199 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 194 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time
[2024-11-03 00:56:53,174 INFO  L433           NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 245 Invalid, 199 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 194 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time]
[2024-11-03 00:56:53,175 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 100 states.
[2024-11-03 00:56:53,198 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 96.
[2024-11-03 00:56:53,199 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 96 states, 58 states have (on average 1.3448275862068966) internal successors, (78), 58 states have internal predecessors, (78), 35 states have call successors, (35), 2 states have call predecessors, (35), 2 states have return successors, (35), 35 states have call predecessors, (35), 35 states have call successors, (35)
[2024-11-03 00:56:53,200 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 148 transitions.
[2024-11-03 00:56:53,201 INFO  L78                 Accepts]: Start accepts. Automaton has 96 states and 148 transitions. Word has length 217
[2024-11-03 00:56:53,202 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-03 00:56:53,202 INFO  L471      AbstractCegarLoop]: Abstraction has 96 states and 148 transitions.
[2024-11-03 00:56:53,202 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 2 states have call successors, (66), 2 states have call predecessors, (66), 4 states have return successors, (67), 2 states have call predecessors, (67), 2 states have call successors, (67)
[2024-11-03 00:56:53,203 INFO  L276                IsEmpty]: Start isEmpty. Operand 96 states and 148 transitions.
[2024-11-03 00:56:53,205 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 219
[2024-11-03 00:56:53,206 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-03 00:56:53,206 INFO  L215           NwaCegarLoop]: trace histogram [35, 35, 35, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-03 00:56:53,217 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (3)] Ended with exit code 0
[2024-11-03 00:56:53,406 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt
[2024-11-03 00:56:53,407 INFO  L396      AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-03 00:56:53,408 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-03 00:56:53,408 INFO  L85        PathProgramCache]: Analyzing trace with hash -227089071, now seen corresponding path program 1 times
[2024-11-03 00:56:53,408 INFO  L118   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2024-11-03 00:56:53,408 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [278620329]
[2024-11-03 00:56:53,408 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-03 00:56:53,409 INFO  L173          SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt
[2024-11-03 00:56:53,409 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4
[2024-11-03 00:56:53,412 INFO  L229       MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null)
[2024-11-03 00:56:53,414 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (4)] Waiting until timeout for monitored process
[2024-11-03 00:56:54,192 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-03 00:56:54,226 INFO  L255         TraceCheckSpWp]: Trace formula consists of 351 conjuncts, 9 conjuncts are in the unsatisfiable core
[2024-11-03 00:56:54,235 INFO  L278         TraceCheckSpWp]: Computing forward predicates...
[2024-11-03 00:56:55,131 INFO  L134       CoverageAnalysis]: Checked inductivity of 2380 backedges. 624 proven. 87 refuted. 0 times theorem prover too weak. 1669 trivial. 0 not checked.
[2024-11-03 00:56:55,131 INFO  L311         TraceCheckSpWp]: Computing backward predicates...
[2024-11-03 00:56:55,749 INFO  L134       CoverageAnalysis]: Checked inductivity of 2380 backedges. 15 proven. 87 refuted. 0 times theorem prover too weak. 2278 trivial. 0 not checked.
[2024-11-03 00:56:55,750 INFO  L136   FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2024-11-03 00:56:55,750 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [278620329]
[2024-11-03 00:56:55,750 INFO  L158   FreeRefinementEngine]: IpTcStrategyModulePreferences [278620329] provided 0 perfect and 2 imperfect interpolant sequences
[2024-11-03 00:56:55,750 INFO  L185   FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2024-11-03 00:56:55,750 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 12
[2024-11-03 00:56:55,750 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1516513194]
[2024-11-03 00:56:55,751 INFO  L85    oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2024-11-03 00:56:55,751 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 12 states
[2024-11-03 00:56:55,752 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2024-11-03 00:56:55,752 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants.
[2024-11-03 00:56:55,753 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132
[2024-11-03 00:56:55,753 INFO  L87              Difference]: Start difference. First operand 96 states and 148 transitions. Second operand  has 12 states, 12 states have (on average 5.25) internal successors, (63), 12 states have internal predecessors, (63), 2 states have call successors, (64), 2 states have call predecessors, (64), 4 states have return successors, (65), 2 states have call predecessors, (65), 2 states have call successors, (65)
[2024-11-03 00:56:58,584 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-03 00:56:58,585 INFO  L93              Difference]: Finished difference Result 344 states and 483 transitions.
[2024-11-03 00:56:58,586 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. 
[2024-11-03 00:56:58,586 INFO  L78                 Accepts]: Start accepts. Automaton has  has 12 states, 12 states have (on average 5.25) internal successors, (63), 12 states have internal predecessors, (63), 2 states have call successors, (64), 2 states have call predecessors, (64), 4 states have return successors, (65), 2 states have call predecessors, (65), 2 states have call successors, (65) Word has length 218
[2024-11-03 00:56:58,587 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-03 00:56:58,593 INFO  L225             Difference]: With dead ends: 344
[2024-11-03 00:56:58,593 INFO  L226             Difference]: Without dead ends: 251
[2024-11-03 00:56:58,595 INFO  L431           NwaCegarLoop]: 0 DeclaredPredicates, 482 GetRequests, 429 SyntacticMatches, 1 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 894 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=663, Invalid=2199, Unknown=0, NotChecked=0, Total=2862
[2024-11-03 00:56:58,596 INFO  L432           NwaCegarLoop]: 109 mSDtfsCounter, 500 mSDsluCounter, 586 mSDsCounter, 0 mSdLazyCounter, 489 mSolverCounterSat, 117 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 508 SdHoareTripleChecker+Valid, 695 SdHoareTripleChecker+Invalid, 606 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 117 IncrementalHoareTripleChecker+Valid, 489 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time
[2024-11-03 00:56:58,597 INFO  L433           NwaCegarLoop]: SdHoareTripleChecker [508 Valid, 695 Invalid, 606 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [117 Valid, 489 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time]
[2024-11-03 00:56:58,598 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 251 states.
[2024-11-03 00:56:58,624 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 251 to 119.
[2024-11-03 00:56:58,624 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 119 states, 79 states have (on average 1.379746835443038) internal successors, (109), 79 states have internal predecessors, (109), 35 states have call successors, (35), 4 states have call predecessors, (35), 4 states have return successors, (35), 35 states have call predecessors, (35), 35 states have call successors, (35)
[2024-11-03 00:56:58,625 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 179 transitions.
[2024-11-03 00:56:58,626 INFO  L78                 Accepts]: Start accepts. Automaton has 119 states and 179 transitions. Word has length 218
[2024-11-03 00:56:58,627 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-03 00:56:58,627 INFO  L471      AbstractCegarLoop]: Abstraction has 119 states and 179 transitions.
[2024-11-03 00:56:58,627 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 12 states, 12 states have (on average 5.25) internal successors, (63), 12 states have internal predecessors, (63), 2 states have call successors, (64), 2 states have call predecessors, (64), 4 states have return successors, (65), 2 states have call predecessors, (65), 2 states have call successors, (65)
[2024-11-03 00:56:58,627 INFO  L276                IsEmpty]: Start isEmpty. Operand 119 states and 179 transitions.
[2024-11-03 00:56:58,630 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 219
[2024-11-03 00:56:58,630 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-03 00:56:58,630 INFO  L215           NwaCegarLoop]: trace histogram [35, 35, 35, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-03 00:56:58,645 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (4)] Forceful destruction successful, exit code 0
[2024-11-03 00:56:58,830 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt
[2024-11-03 00:56:58,831 INFO  L396      AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-03 00:56:58,832 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-03 00:56:58,832 INFO  L85        PathProgramCache]: Analyzing trace with hash 165937939, now seen corresponding path program 1 times
[2024-11-03 00:56:58,832 INFO  L118   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2024-11-03 00:56:58,832 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1892784562]
[2024-11-03 00:56:58,832 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-03 00:56:58,833 INFO  L173          SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt
[2024-11-03 00:56:58,833 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4
[2024-11-03 00:56:58,835 INFO  L229       MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null)
[2024-11-03 00:56:58,836 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (5)] Waiting until timeout for monitored process
[2024-11-03 00:56:59,870 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-03 00:56:59,882 INFO  L255         TraceCheckSpWp]: Trace formula consists of 352 conjuncts, 25 conjuncts are in the unsatisfiable core
[2024-11-03 00:56:59,888 INFO  L278         TraceCheckSpWp]: Computing forward predicates...
[2024-11-03 00:57:04,131 INFO  L134       CoverageAnalysis]: Checked inductivity of 2380 backedges. 1648 proven. 195 refuted. 0 times theorem prover too weak. 537 trivial. 0 not checked.
[2024-11-03 00:57:04,132 INFO  L311         TraceCheckSpWp]: Computing backward predicates...
[2024-11-03 00:57:05,206 INFO  L134       CoverageAnalysis]: Checked inductivity of 2380 backedges. 174 proven. 27 refuted. 0 times theorem prover too weak. 2179 trivial. 0 not checked.
[2024-11-03 00:57:05,207 INFO  L136   FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2024-11-03 00:57:05,207 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1892784562]
[2024-11-03 00:57:05,207 INFO  L158   FreeRefinementEngine]: IpTcStrategyModulePreferences [1892784562] provided 0 perfect and 2 imperfect interpolant sequences
[2024-11-03 00:57:05,207 INFO  L185   FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2024-11-03 00:57:05,207 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 11] total 34
[2024-11-03 00:57:05,208 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [908850886]
[2024-11-03 00:57:05,208 INFO  L85    oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2024-11-03 00:57:05,208 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 34 states
[2024-11-03 00:57:05,209 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2024-11-03 00:57:05,210 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants.
[2024-11-03 00:57:05,210 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=250, Invalid=872, Unknown=0, NotChecked=0, Total=1122
[2024-11-03 00:57:05,211 INFO  L87              Difference]: Start difference. First operand 119 states and 179 transitions. Second operand  has 34 states, 33 states have (on average 3.6666666666666665) internal successors, (121), 31 states have internal predecessors, (121), 10 states have call successors, (70), 8 states have call predecessors, (70), 13 states have return successors, (70), 10 states have call predecessors, (70), 10 states have call successors, (70)
[2024-11-03 00:57:13,346 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-03 00:57:13,346 INFO  L93              Difference]: Finished difference Result 569 states and 809 transitions.
[2024-11-03 00:57:13,347 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. 
[2024-11-03 00:57:13,347 INFO  L78                 Accepts]: Start accepts. Automaton has  has 34 states, 33 states have (on average 3.6666666666666665) internal successors, (121), 31 states have internal predecessors, (121), 10 states have call successors, (70), 8 states have call predecessors, (70), 13 states have return successors, (70), 10 states have call predecessors, (70), 10 states have call successors, (70) Word has length 218
[2024-11-03 00:57:13,348 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-03 00:57:13,351 INFO  L225             Difference]: With dead ends: 569
[2024-11-03 00:57:13,352 INFO  L226             Difference]: Without dead ends: 453
[2024-11-03 00:57:13,354 INFO  L431           NwaCegarLoop]: 0 DeclaredPredicates, 488 GetRequests, 407 SyntacticMatches, 0 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2450 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=1616, Invalid=5190, Unknown=0, NotChecked=0, Total=6806
[2024-11-03 00:57:13,355 INFO  L432           NwaCegarLoop]: 88 mSDtfsCounter, 1043 mSDsluCounter, 825 mSDsCounter, 0 mSdLazyCounter, 1376 mSolverCounterSat, 650 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1059 SdHoareTripleChecker+Valid, 913 SdHoareTripleChecker+Invalid, 2026 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 650 IncrementalHoareTripleChecker+Valid, 1376 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time
[2024-11-03 00:57:13,355 INFO  L433           NwaCegarLoop]: SdHoareTripleChecker [1059 Valid, 913 Invalid, 2026 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [650 Valid, 1376 Invalid, 0 Unknown, 0 Unchecked, 5.0s Time]
[2024-11-03 00:57:13,356 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 453 states.
[2024-11-03 00:57:13,400 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 453 to 360.
[2024-11-03 00:57:13,401 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 360 states, 237 states have (on average 1.3164556962025316) internal successors, (312), 238 states have internal predecessors, (312), 100 states have call successors, (100), 22 states have call predecessors, (100), 22 states have return successors, (100), 99 states have call predecessors, (100), 100 states have call successors, (100)
[2024-11-03 00:57:13,404 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 360 states to 360 states and 512 transitions.
[2024-11-03 00:57:13,405 INFO  L78                 Accepts]: Start accepts. Automaton has 360 states and 512 transitions. Word has length 218
[2024-11-03 00:57:13,405 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-03 00:57:13,405 INFO  L471      AbstractCegarLoop]: Abstraction has 360 states and 512 transitions.
[2024-11-03 00:57:13,406 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 34 states, 33 states have (on average 3.6666666666666665) internal successors, (121), 31 states have internal predecessors, (121), 10 states have call successors, (70), 8 states have call predecessors, (70), 13 states have return successors, (70), 10 states have call predecessors, (70), 10 states have call successors, (70)
[2024-11-03 00:57:13,406 INFO  L276                IsEmpty]: Start isEmpty. Operand 360 states and 512 transitions.
[2024-11-03 00:57:13,409 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 220
[2024-11-03 00:57:13,409 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-03 00:57:13,409 INFO  L215           NwaCegarLoop]: trace histogram [35, 35, 35, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-03 00:57:13,423 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (5)] Ended with exit code 0
[2024-11-03 00:57:13,609 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt
[2024-11-03 00:57:13,610 INFO  L396      AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-03 00:57:13,610 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-03 00:57:13,610 INFO  L85        PathProgramCache]: Analyzing trace with hash 613548626, now seen corresponding path program 1 times
[2024-11-03 00:57:13,611 INFO  L118   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2024-11-03 00:57:13,611 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2025567314]
[2024-11-03 00:57:13,611 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-03 00:57:13,611 INFO  L173          SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt
[2024-11-03 00:57:13,611 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4
[2024-11-03 00:57:13,612 INFO  L229       MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null)
[2024-11-03 00:57:13,614 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (6)] Waiting until timeout for monitored process
[2024-11-03 00:57:14,686 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-03 00:57:14,715 INFO  L255         TraceCheckSpWp]: Trace formula consists of 354 conjuncts, 89 conjuncts are in the unsatisfiable core
[2024-11-03 00:57:14,724 INFO  L278         TraceCheckSpWp]: Computing forward predicates...