/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_amount50_file-56.i


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


This is Ultimate 0.2.5-dev-b75d321-m
[2024-11-03 01:55:20,968 INFO  L188        SettingsManager]: Resetting all preferences to default values...
[2024-11-03 01:55:21,048 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 01:55:21,056 WARN  L101        SettingsManager]: Preference file contains the following unknown settings:
[2024-11-03 01:55:21,057 WARN  L103        SettingsManager]:   * de.uni_freiburg.informatik.ultimate.core.Log level for class
[2024-11-03 01:55:21,084 INFO  L130        SettingsManager]: Preferences different from defaults after loading the file:
[2024-11-03 01:55:21,084 INFO  L151        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2024-11-03 01:55:21,085 INFO  L153        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2024-11-03 01:55:21,086 INFO  L151        SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults:
[2024-11-03 01:55:21,089 INFO  L153        SettingsManager]:  * Use memory slicer=true
[2024-11-03 01:55:21,089 INFO  L151        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2024-11-03 01:55:21,089 INFO  L153        SettingsManager]:  * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2024-11-03 01:55:21,090 INFO  L151        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2024-11-03 01:55:21,090 INFO  L153        SettingsManager]:  * Create parallel compositions if possible=false
[2024-11-03 01:55:21,090 INFO  L153        SettingsManager]:  * Use SBE=true
[2024-11-03 01:55:21,090 INFO  L151        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2024-11-03 01:55:21,091 INFO  L153        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2024-11-03 01:55:21,091 INFO  L153        SettingsManager]:  * sizeof long=4
[2024-11-03 01:55:21,091 INFO  L153        SettingsManager]:  * sizeof POINTER=4
[2024-11-03 01:55:21,091 INFO  L153        SettingsManager]:  * Check division by zero=IGNORE
[2024-11-03 01:55:21,091 INFO  L153        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2024-11-03 01:55:21,093 INFO  L153        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2024-11-03 01:55:21,093 INFO  L153        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2024-11-03 01:55:21,093 INFO  L153        SettingsManager]:  * Adapt memory model on pointer casts if necessary=true
[2024-11-03 01:55:21,093 INFO  L153        SettingsManager]:  * Use bitvectors instead of ints=true
[2024-11-03 01:55:21,093 INFO  L153        SettingsManager]:  * Allow undefined functions=false
[2024-11-03 01:55:21,094 INFO  L153        SettingsManager]:  * Memory model=HoenickeLindenmann_4ByteResolution
[2024-11-03 01:55:21,094 INFO  L153        SettingsManager]:  * sizeof long double=12
[2024-11-03 01:55:21,094 INFO  L153        SettingsManager]:  * Check if freed pointer was valid=false
[2024-11-03 01:55:21,094 INFO  L153        SettingsManager]:  * Use constant arrays=true
[2024-11-03 01:55:21,095 INFO  L151        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2024-11-03 01:55:21,095 INFO  L153        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2024-11-03 01:55:21,095 INFO  L153        SettingsManager]:  * Only consider context switches at boundaries of atomic blocks=true
[2024-11-03 01:55:21,095 INFO  L153        SettingsManager]:  * SMT solver=External_DefaultMode
[2024-11-03 01:55:21,095 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2024-11-03 01:55:21,096 INFO  L151        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2024-11-03 01:55:21,096 INFO  L153        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2024-11-03 01:55:21,096 INFO  L153        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopHeads
[2024-11-03 01:55:21,096 INFO  L153        SettingsManager]:  * Trace refinement strategy=WOLF
[2024-11-03 01:55:21,097 INFO  L153        SettingsManager]:  * Command for external solver=cvc4 --incremental --print-success --lang smt
[2024-11-03 01:55:21,097 INFO  L153        SettingsManager]:  * Apply one-shot large block encoding in concurrent analysis=false
[2024-11-03 01:55:21,097 INFO  L153        SettingsManager]:  * Automaton type used in concurrency analysis=PETRI_NET
[2024-11-03 01:55:21,097 INFO  L153        SettingsManager]:  * Order on configurations for Petri net unfoldings=DBO
[2024-11-03 01:55:21,097 INFO  L153        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2024-11-03 01:55:21,098 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$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Allow undefined functions -> true
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> External_ModelsAndUnsatCoreMode
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Command for external solver -> cvc4 --incremental --print-success --lang smt
[2024-11-03 01:55:21,319 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2024-11-03 01:55:21,343 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2024-11-03 01:55:21,347 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2024-11-03 01:55:21,348 INFO  L270        PluginConnector]: Initializing CDTParser...
[2024-11-03 01:55:21,349 INFO  L274        PluginConnector]: CDTParser initialized
[2024-11-03 01:55:21,350 INFO  L431   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount50_file-56.i
[2024-11-03 01:55:22,703 INFO  L533              CDTParser]: Created temporary CDT project at NULL
[2024-11-03 01:55:22,878 INFO  L384              CDTParser]: Found 1 translation units.
[2024-11-03 01:55:22,878 INFO  L180              CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount50_file-56.i
[2024-11-03 01:55:22,890 INFO  L427              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/751fda978/abb72088052b42b1b993cdae62a5ca50/FLAGa2ace0bc7
[2024-11-03 01:55:22,905 INFO  L435              CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/751fda978/abb72088052b42b1b993cdae62a5ca50
[2024-11-03 01:55:22,907 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2024-11-03 01:55:22,909 INFO  L133        ToolchainWalker]: Walking toolchain with 5 elements.
[2024-11-03 01:55:22,910 INFO  L112        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2024-11-03 01:55:22,910 INFO  L270        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2024-11-03 01:55:22,915 INFO  L274        PluginConnector]: CACSL2BoogieTranslator initialized
[2024-11-03 01:55:22,915 INFO  L184        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 01:55:22" (1/1) ...
[2024-11-03 01:55:22,916 INFO  L204        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@57d271dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:55:22, skipping insertion in model container
[2024-11-03 01:55:22,916 INFO  L184        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 01:55:22" (1/1) ...
[2024-11-03 01:55:22,948 INFO  L175         MainTranslator]: Built tables and reachable declarations
[2024-11-03 01:55:23,101 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_amount50_file-56.i[915,928]
[2024-11-03 01:55:23,160 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2024-11-03 01:55:23,172 INFO  L200         MainTranslator]: Completed pre-run
[2024-11-03 01:55:23,182 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_amount50_file-56.i[915,928]
[2024-11-03 01:55:23,216 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2024-11-03 01:55:23,241 INFO  L204         MainTranslator]: Completed translation
[2024-11-03 01:55:23,242 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:55:23 WrapperNode
[2024-11-03 01:55:23,242 INFO  L131        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2024-11-03 01:55:23,243 INFO  L112        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2024-11-03 01:55:23,243 INFO  L270        PluginConnector]: Initializing Boogie Procedure Inliner...
[2024-11-03 01:55:23,243 INFO  L274        PluginConnector]: Boogie Procedure Inliner initialized
[2024-11-03 01:55:23,248 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:55:23" (1/1) ...
[2024-11-03 01:55:23,257 INFO  L184        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:55:23" (1/1) ...
[2024-11-03 01:55:23,287 INFO  L138                Inliner]: procedures = 27, calls = 35, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 130
[2024-11-03 01:55:23,287 INFO  L131        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2024-11-03 01:55:23,288 INFO  L112        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2024-11-03 01:55:23,288 INFO  L270        PluginConnector]: Initializing Boogie Preprocessor...
[2024-11-03 01:55:23,288 INFO  L274        PluginConnector]: Boogie Preprocessor initialized
[2024-11-03 01:55:23,303 INFO  L184        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:55:23" (1/1) ...
[2024-11-03 01:55:23,303 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:55:23" (1/1) ...
[2024-11-03 01:55:23,310 INFO  L184        PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:55:23" (1/1) ...
[2024-11-03 01:55:23,325 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 01:55:23,325 INFO  L184        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:55:23" (1/1) ...
[2024-11-03 01:55:23,326 INFO  L184        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:55:23" (1/1) ...
[2024-11-03 01:55:23,340 INFO  L184        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:55:23" (1/1) ...
[2024-11-03 01:55:23,349 INFO  L184        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:55:23" (1/1) ...
[2024-11-03 01:55:23,352 INFO  L184        PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:55:23" (1/1) ...
[2024-11-03 01:55:23,353 INFO  L184        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:55:23" (1/1) ...
[2024-11-03 01:55:23,356 INFO  L131        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2024-11-03 01:55:23,357 INFO  L112        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2024-11-03 01:55:23,357 INFO  L270        PluginConnector]: Initializing RCFGBuilder...
[2024-11-03 01:55:23,357 INFO  L274        PluginConnector]: RCFGBuilder initialized
[2024-11-03 01:55:23,358 INFO  L184        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:55:23" (1/1) ...
[2024-11-03 01:55:23,368 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2024-11-03 01:55:23,380 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2024-11-03 01:55:23,395 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 01:55:23,398 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 01:55:23,426 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2024-11-03 01:55:23,426 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0
[2024-11-03 01:55:23,426 INFO  L130     BoogieDeclarations]: Found specification of procedure assume_abort_if_not
[2024-11-03 01:55:23,426 INFO  L138     BoogieDeclarations]: Found implementation of procedure assume_abort_if_not
[2024-11-03 01:55:23,426 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2024-11-03 01:55:23,427 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2024-11-03 01:55:23,493 INFO  L238             CfgBuilder]: Building ICFG
[2024-11-03 01:55:23,495 INFO  L264             CfgBuilder]: Building CFG for each procedure with an implementation
[2024-11-03 01:55:23,793 INFO  L?                        ?]: Removed 14 outVars from TransFormulas that were not future-live.
[2024-11-03 01:55:23,793 INFO  L287             CfgBuilder]: Performing block encoding
[2024-11-03 01:55:23,809 INFO  L311             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2024-11-03 01:55:23,810 INFO  L316             CfgBuilder]: Removed 1 assume(true) statements.
[2024-11-03 01:55:23,810 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 01:55:23 BoogieIcfgContainer
[2024-11-03 01:55:23,810 INFO  L131        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2024-11-03 01:55:23,813 INFO  L112        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2024-11-03 01:55:23,813 INFO  L270        PluginConnector]: Initializing TraceAbstraction...
[2024-11-03 01:55:23,816 INFO  L274        PluginConnector]: TraceAbstraction initialized
[2024-11-03 01:55:23,816 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 01:55:22" (1/3) ...
[2024-11-03 01:55:23,816 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@778470c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 01:55:23, skipping insertion in model container
[2024-11-03 01:55:23,816 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:55:23" (2/3) ...
[2024-11-03 01:55:23,817 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@778470c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 01:55:23, skipping insertion in model container
[2024-11-03 01:55:23,817 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 01:55:23" (3/3) ...
[2024-11-03 01:55:23,818 INFO  L112   eAbstractionObserver]: Analyzing ICFG hardness_operatoramount_amount50_file-56.i
[2024-11-03 01:55:23,831 INFO  L214   ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2024-11-03 01:55:23,831 INFO  L154   ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2024-11-03 01:55:23,890 INFO  L332      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2024-11-03 01:55:23,899 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;@1cb03ef6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2024-11-03 01:55:23,902 INFO  L334      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2024-11-03 01:55:23,906 INFO  L276                IsEmpty]: Start isEmpty. Operand  has 62 states, 37 states have (on average 1.3243243243243243) internal successors, (49), 38 states have internal predecessors, (49), 22 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22)
[2024-11-03 01:55:23,919 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 140
[2024-11-03 01:55:23,920 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-03 01:55:23,920 INFO  L215           NwaCegarLoop]: trace histogram [22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:55:23,921 INFO  L396      AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-03 01:55:23,925 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-03 01:55:23,926 INFO  L85        PathProgramCache]: Analyzing trace with hash -740184149, now seen corresponding path program 1 times
[2024-11-03 01:55:23,934 INFO  L118   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2024-11-03 01:55:23,934 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [879241154]
[2024-11-03 01:55:23,934 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-03 01:55:23,936 INFO  L173          SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt
[2024-11-03 01:55:23,937 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4
[2024-11-03 01:55:23,941 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 01:55:23,942 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 01:55:24,158 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-03 01:55:24,162 INFO  L255         TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 1 conjuncts are in the unsatisfiable core
[2024-11-03 01:55:24,177 INFO  L278         TraceCheckSpWp]: Computing forward predicates...
[2024-11-03 01:55:24,223 INFO  L134       CoverageAnalysis]: Checked inductivity of 924 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 882 trivial. 0 not checked.
[2024-11-03 01:55:24,224 INFO  L311         TraceCheckSpWp]: Computing backward predicates...
[2024-11-03 01:55:24,370 INFO  L134       CoverageAnalysis]: Checked inductivity of 924 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 882 trivial. 0 not checked.
[2024-11-03 01:55:24,371 INFO  L136   FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2024-11-03 01:55:24,371 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [879241154]
[2024-11-03 01:55:24,372 INFO  L158   FreeRefinementEngine]: IpTcStrategyModulePreferences [879241154] provided 2 perfect and 0 imperfect interpolant sequences
[2024-11-03 01:55:24,372 INFO  L185   FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences.
[2024-11-03 01:55:24,374 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2
[2024-11-03 01:55:24,375 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1314879076]
[2024-11-03 01:55:24,376 INFO  L85    oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton
[2024-11-03 01:55:24,382 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 2 states
[2024-11-03 01:55:24,382 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2024-11-03 01:55:24,406 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants.
[2024-11-03 01:55:24,408 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2024-11-03 01:55:24,410 INFO  L87              Difference]: Start difference. First operand  has 62 states, 37 states have (on average 1.3243243243243243) internal successors, (49), 38 states have internal predecessors, (49), 22 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) Second operand  has 2 states, 2 states have (on average 17.0) internal successors, (34), 2 states have internal predecessors, (34), 1 states have call successors, (22), 1 states have call predecessors, (22), 2 states have return successors, (22), 2 states have call predecessors, (22), 1 states have call successors, (22)
[2024-11-03 01:55:24,439 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-03 01:55:24,439 INFO  L93              Difference]: Finished difference Result 117 states and 202 transitions.
[2024-11-03 01:55:24,440 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. 
[2024-11-03 01:55:24,441 INFO  L78                 Accepts]: Start accepts. Automaton has  has 2 states, 2 states have (on average 17.0) internal successors, (34), 2 states have internal predecessors, (34), 1 states have call successors, (22), 1 states have call predecessors, (22), 2 states have return successors, (22), 2 states have call predecessors, (22), 1 states have call successors, (22) Word has length 139
[2024-11-03 01:55:24,441 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-03 01:55:24,447 INFO  L225             Difference]: With dead ends: 117
[2024-11-03 01:55:24,447 INFO  L226             Difference]: Without dead ends: 58
[2024-11-03 01:55:24,450 INFO  L431           NwaCegarLoop]: 0 DeclaredPredicates, 276 GetRequests, 276 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 01:55:24,452 INFO  L432           NwaCegarLoop]: 86 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, 86 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 01:55:24,453 INFO  L433           NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2024-11-03 01:55:24,466 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 58 states.
[2024-11-03 01:55:24,484 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58.
[2024-11-03 01:55:24,485 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 58 states, 34 states have (on average 1.2352941176470589) internal successors, (42), 34 states have internal predecessors, (42), 22 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22)
[2024-11-03 01:55:24,486 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 86 transitions.
[2024-11-03 01:55:24,489 INFO  L78                 Accepts]: Start accepts. Automaton has 58 states and 86 transitions. Word has length 139
[2024-11-03 01:55:24,490 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-03 01:55:24,490 INFO  L471      AbstractCegarLoop]: Abstraction has 58 states and 86 transitions.
[2024-11-03 01:55:24,490 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 2 states, 2 states have (on average 17.0) internal successors, (34), 2 states have internal predecessors, (34), 1 states have call successors, (22), 1 states have call predecessors, (22), 2 states have return successors, (22), 2 states have call predecessors, (22), 1 states have call successors, (22)
[2024-11-03 01:55:24,490 INFO  L276                IsEmpty]: Start isEmpty. Operand 58 states and 86 transitions.
[2024-11-03 01:55:24,496 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 140
[2024-11-03 01:55:24,496 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-03 01:55:24,496 INFO  L215           NwaCegarLoop]: trace histogram [22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:55:24,500 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 01:55:24,697 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 01:55:24,698 INFO  L396      AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-03 01:55:24,698 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-03 01:55:24,699 INFO  L85        PathProgramCache]: Analyzing trace with hash 1981958379, now seen corresponding path program 1 times
[2024-11-03 01:55:24,699 INFO  L118   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2024-11-03 01:55:24,699 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2026935804]
[2024-11-03 01:55:24,699 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-03 01:55:24,699 INFO  L173          SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt
[2024-11-03 01:55:24,700 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4
[2024-11-03 01:55:24,702 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 01:55:24,704 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 01:55:24,931 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-03 01:55:24,941 INFO  L255         TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 6 conjuncts are in the unsatisfiable core
[2024-11-03 01:55:24,949 INFO  L278         TraceCheckSpWp]: Computing forward predicates...
[2024-11-03 01:55:25,113 INFO  L134       CoverageAnalysis]: Checked inductivity of 924 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 924 trivial. 0 not checked.
[2024-11-03 01:55:25,114 INFO  L311         TraceCheckSpWp]: Computing backward predicates...
[2024-11-03 01:55:25,279 INFO  L134       CoverageAnalysis]: Checked inductivity of 924 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 924 trivial. 0 not checked.
[2024-11-03 01:55:25,280 INFO  L136   FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2024-11-03 01:55:25,280 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2026935804]
[2024-11-03 01:55:25,280 INFO  L158   FreeRefinementEngine]: IpTcStrategyModulePreferences [2026935804] provided 2 perfect and 0 imperfect interpolant sequences
[2024-11-03 01:55:25,280 INFO  L185   FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences.
[2024-11-03 01:55:25,281 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 7
[2024-11-03 01:55:25,281 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1748614373]
[2024-11-03 01:55:25,281 INFO  L85    oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton
[2024-11-03 01:55:25,284 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2024-11-03 01:55:25,284 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2024-11-03 01:55:25,285 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2024-11-03 01:55:25,285 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42
[2024-11-03 01:55:25,285 INFO  L87              Difference]: Start difference. First operand 58 states and 86 transitions. Second operand  has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 7 states have internal predecessors, (36), 1 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22)
[2024-11-03 01:55:25,560 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-03 01:55:25,560 INFO  L93              Difference]: Finished difference Result 197 states and 281 transitions.
[2024-11-03 01:55:25,563 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. 
[2024-11-03 01:55:25,563 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 7 states have internal predecessors, (36), 1 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) Word has length 139
[2024-11-03 01:55:25,564 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-03 01:55:25,568 INFO  L225             Difference]: With dead ends: 197
[2024-11-03 01:55:25,568 INFO  L226             Difference]: Without dead ends: 142
[2024-11-03 01:55:25,569 INFO  L431           NwaCegarLoop]: 0 DeclaredPredicates, 281 GetRequests, 273 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90
[2024-11-03 01:55:25,572 INFO  L432           NwaCegarLoop]: 94 mSDtfsCounter, 219 mSDsluCounter, 308 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 219 SdHoareTripleChecker+Valid, 402 SdHoareTripleChecker+Invalid, 97 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2024-11-03 01:55:25,572 INFO  L433           NwaCegarLoop]: SdHoareTripleChecker [219 Valid, 402 Invalid, 97 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2024-11-03 01:55:25,574 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 142 states.
[2024-11-03 01:55:25,596 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 85.
[2024-11-03 01:55:25,596 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 85 states, 56 states have (on average 1.2857142857142858) internal successors, (72), 57 states have internal predecessors, (72), 26 states have call successors, (26), 2 states have call predecessors, (26), 2 states have return successors, (26), 25 states have call predecessors, (26), 26 states have call successors, (26)
[2024-11-03 01:55:25,600 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 124 transitions.
[2024-11-03 01:55:25,601 INFO  L78                 Accepts]: Start accepts. Automaton has 85 states and 124 transitions. Word has length 139
[2024-11-03 01:55:25,602 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-03 01:55:25,602 INFO  L471      AbstractCegarLoop]: Abstraction has 85 states and 124 transitions.
[2024-11-03 01:55:25,602 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 7 states have internal predecessors, (36), 1 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22)
[2024-11-03 01:55:25,603 INFO  L276                IsEmpty]: Start isEmpty. Operand 85 states and 124 transitions.
[2024-11-03 01:55:25,605 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 140
[2024-11-03 01:55:25,606 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-03 01:55:25,606 INFO  L215           NwaCegarLoop]: trace histogram [22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:55:25,610 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 01:55:25,806 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 01:55:25,807 INFO  L396      AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-03 01:55:25,807 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-03 01:55:25,808 INFO  L85        PathProgramCache]: Analyzing trace with hash 1172611753, now seen corresponding path program 1 times
[2024-11-03 01:55:25,808 INFO  L118   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2024-11-03 01:55:25,808 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1431370245]
[2024-11-03 01:55:25,808 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-03 01:55:25,808 INFO  L173          SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt
[2024-11-03 01:55:25,809 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4
[2024-11-03 01:55:25,811 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 01:55:25,813 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 01:55:25,993 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-03 01:55:26,008 INFO  L255         TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 5 conjuncts are in the unsatisfiable core
[2024-11-03 01:55:26,013 INFO  L278         TraceCheckSpWp]: Computing forward predicates...
[2024-11-03 01:55:26,233 INFO  L134       CoverageAnalysis]: Checked inductivity of 924 backedges. 301 proven. 51 refuted. 0 times theorem prover too weak. 572 trivial. 0 not checked.
[2024-11-03 01:55:26,234 INFO  L311         TraceCheckSpWp]: Computing backward predicates...
[2024-11-03 01:55:26,466 INFO  L134       CoverageAnalysis]: Checked inductivity of 924 backedges. 12 proven. 51 refuted. 0 times theorem prover too weak. 861 trivial. 0 not checked.
[2024-11-03 01:55:26,466 INFO  L136   FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2024-11-03 01:55:26,466 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1431370245]
[2024-11-03 01:55:26,467 INFO  L158   FreeRefinementEngine]: IpTcStrategyModulePreferences [1431370245] provided 0 perfect and 2 imperfect interpolant sequences
[2024-11-03 01:55:26,467 INFO  L185   FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2024-11-03 01:55:26,467 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7
[2024-11-03 01:55:26,467 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [965727099]
[2024-11-03 01:55:26,467 INFO  L85    oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2024-11-03 01:55:26,470 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2024-11-03 01:55:26,470 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2024-11-03 01:55:26,471 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2024-11-03 01:55:26,472 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42
[2024-11-03 01:55:26,472 INFO  L87              Difference]: Start difference. First operand 85 states and 124 transitions. Second operand  has 7 states, 7 states have (on average 5.857142857142857) internal successors, (41), 7 states have internal predecessors, (41), 2 states have call successors, (39), 2 states have call predecessors, (39), 4 states have return successors, (40), 2 states have call predecessors, (40), 2 states have call successors, (40)
[2024-11-03 01:55:26,703 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-03 01:55:26,703 INFO  L93              Difference]: Finished difference Result 175 states and 252 transitions.
[2024-11-03 01:55:26,707 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. 
[2024-11-03 01:55:26,707 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 5.857142857142857) internal successors, (41), 7 states have internal predecessors, (41), 2 states have call successors, (39), 2 states have call predecessors, (39), 4 states have return successors, (40), 2 states have call predecessors, (40), 2 states have call successors, (40) Word has length 139
[2024-11-03 01:55:26,708 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-03 01:55:26,710 INFO  L225             Difference]: With dead ends: 175
[2024-11-03 01:55:26,711 INFO  L226             Difference]: Without dead ends: 90
[2024-11-03 01:55:26,712 INFO  L431           NwaCegarLoop]: 0 DeclaredPredicates, 279 GetRequests, 270 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90
[2024-11-03 01:55:26,713 INFO  L432           NwaCegarLoop]: 58 mSDtfsCounter, 49 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 123 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 128 SdHoareTripleChecker+Invalid, 137 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 123 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2024-11-03 01:55:26,713 INFO  L433           NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 128 Invalid, 137 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 123 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2024-11-03 01:55:26,714 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 90 states.
[2024-11-03 01:55:26,734 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 86.
[2024-11-03 01:55:26,736 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 86 states, 56 states have (on average 1.2142857142857142) internal successors, (68), 57 states have internal predecessors, (68), 26 states have call successors, (26), 3 states have call predecessors, (26), 3 states have return successors, (26), 25 states have call predecessors, (26), 26 states have call successors, (26)
[2024-11-03 01:55:26,737 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 120 transitions.
[2024-11-03 01:55:26,738 INFO  L78                 Accepts]: Start accepts. Automaton has 86 states and 120 transitions. Word has length 139
[2024-11-03 01:55:26,739 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-03 01:55:26,739 INFO  L471      AbstractCegarLoop]: Abstraction has 86 states and 120 transitions.
[2024-11-03 01:55:26,742 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 5.857142857142857) internal successors, (41), 7 states have internal predecessors, (41), 2 states have call successors, (39), 2 states have call predecessors, (39), 4 states have return successors, (40), 2 states have call predecessors, (40), 2 states have call successors, (40)
[2024-11-03 01:55:26,742 INFO  L276                IsEmpty]: Start isEmpty. Operand 86 states and 120 transitions.
[2024-11-03 01:55:26,744 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 140
[2024-11-03 01:55:26,745 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-03 01:55:26,745 INFO  L215           NwaCegarLoop]: trace histogram [22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:55:26,754 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 01:55:26,950 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 01:55:26,951 INFO  L396      AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-03 01:55:26,951 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-03 01:55:26,952 INFO  L85        PathProgramCache]: Analyzing trace with hash -1611944339, now seen corresponding path program 1 times
[2024-11-03 01:55:26,952 INFO  L118   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2024-11-03 01:55:26,952 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [118564730]
[2024-11-03 01:55:26,952 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-03 01:55:26,952 INFO  L173          SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt
[2024-11-03 01:55:26,953 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4
[2024-11-03 01:55:26,955 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 01:55:26,957 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 01:55:27,140 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-03 01:55:27,155 INFO  L255         TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 3 conjuncts are in the unsatisfiable core
[2024-11-03 01:55:27,159 INFO  L278         TraceCheckSpWp]: Computing forward predicates...
[2024-11-03 01:55:27,397 INFO  L134       CoverageAnalysis]: Checked inductivity of 924 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 924 trivial. 0 not checked.
[2024-11-03 01:55:27,397 INFO  L311         TraceCheckSpWp]: Computing backward predicates...
[2024-11-03 01:55:27,507 INFO  L134       CoverageAnalysis]: Checked inductivity of 924 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 924 trivial. 0 not checked.
[2024-11-03 01:55:27,508 INFO  L136   FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2024-11-03 01:55:27,508 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [118564730]
[2024-11-03 01:55:27,508 INFO  L158   FreeRefinementEngine]: IpTcStrategyModulePreferences [118564730] provided 2 perfect and 0 imperfect interpolant sequences
[2024-11-03 01:55:27,508 INFO  L185   FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences.
[2024-11-03 01:55:27,508 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5
[2024-11-03 01:55:27,509 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1143825786]
[2024-11-03 01:55:27,509 INFO  L85    oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton
[2024-11-03 01:55:27,509 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2024-11-03 01:55:27,510 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2024-11-03 01:55:27,514 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2024-11-03 01:55:27,514 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2024-11-03 01:55:27,514 INFO  L87              Difference]: Start difference. First operand 86 states and 120 transitions. Second operand  has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 2 states have call successors, (44), 2 states have call predecessors, (44), 2 states have return successors, (44), 2 states have call predecessors, (44), 2 states have call successors, (44)
[2024-11-03 01:55:27,720 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-03 01:55:27,720 INFO  L93              Difference]: Finished difference Result 234 states and 327 transitions.
[2024-11-03 01:55:27,721 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2024-11-03 01:55:27,721 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 2 states have call successors, (44), 2 states have call predecessors, (44), 2 states have return successors, (44), 2 states have call predecessors, (44), 2 states have call successors, (44) Word has length 139
[2024-11-03 01:55:27,722 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-03 01:55:27,724 INFO  L225             Difference]: With dead ends: 234
[2024-11-03 01:55:27,724 INFO  L226             Difference]: Without dead ends: 151
[2024-11-03 01:55:27,725 INFO  L431           NwaCegarLoop]: 0 DeclaredPredicates, 276 GetRequests, 273 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2024-11-03 01:55:27,726 INFO  L432           NwaCegarLoop]: 76 mSDtfsCounter, 13 mSDsluCounter, 101 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 177 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2024-11-03 01:55:27,726 INFO  L433           NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 177 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2024-11-03 01:55:27,727 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 151 states.
[2024-11-03 01:55:27,747 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 149.
[2024-11-03 01:55:27,747 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 149 states, 94 states have (on average 1.1702127659574468) internal successors, (110), 95 states have internal predecessors, (110), 48 states have call successors, (48), 6 states have call predecessors, (48), 6 states have return successors, (48), 47 states have call predecessors, (48), 48 states have call successors, (48)
[2024-11-03 01:55:27,749 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 206 transitions.
[2024-11-03 01:55:27,749 INFO  L78                 Accepts]: Start accepts. Automaton has 149 states and 206 transitions. Word has length 139
[2024-11-03 01:55:27,750 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-03 01:55:27,750 INFO  L471      AbstractCegarLoop]: Abstraction has 149 states and 206 transitions.
[2024-11-03 01:55:27,751 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 2 states have call successors, (44), 2 states have call predecessors, (44), 2 states have return successors, (44), 2 states have call predecessors, (44), 2 states have call successors, (44)
[2024-11-03 01:55:27,751 INFO  L276                IsEmpty]: Start isEmpty. Operand 149 states and 206 transitions.
[2024-11-03 01:55:27,752 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 140
[2024-11-03 01:55:27,752 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-03 01:55:27,753 INFO  L215           NwaCegarLoop]: trace histogram [22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:55:27,758 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 01:55:27,953 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 01:55:27,954 INFO  L396      AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-03 01:55:27,954 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-03 01:55:27,954 INFO  L85        PathProgramCache]: Analyzing trace with hash -1669202641, now seen corresponding path program 1 times
[2024-11-03 01:55:27,954 INFO  L118   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2024-11-03 01:55:27,955 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [168213937]
[2024-11-03 01:55:27,955 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-03 01:55:27,955 INFO  L173          SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt
[2024-11-03 01:55:27,955 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4
[2024-11-03 01:55:27,956 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 01:55:27,957 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 01:55:28,344 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-03 01:55:28,348 INFO  L255         TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 33 conjuncts are in the unsatisfiable core
[2024-11-03 01:55:28,354 INFO  L278         TraceCheckSpWp]: Computing forward predicates...