/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-81.i


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


This is Ultimate 0.2.5-dev-b75d321-m
[2024-11-03 01:58:45,537 INFO  L188        SettingsManager]: Resetting all preferences to default values...
[2024-11-03 01:58:45,617 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 01:58:45,623 WARN  L101        SettingsManager]: Preference file contains the following unknown settings:
[2024-11-03 01:58:45,625 WARN  L103        SettingsManager]:   * de.uni_freiburg.informatik.ultimate.core.Log level for class
[2024-11-03 01:58:45,656 INFO  L130        SettingsManager]: Preferences different from defaults after loading the file:
[2024-11-03 01:58:45,657 INFO  L151        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2024-11-03 01:58:45,657 INFO  L153        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2024-11-03 01:58:45,658 INFO  L151        SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults:
[2024-11-03 01:58:45,658 INFO  L153        SettingsManager]:  * Use memory slicer=true
[2024-11-03 01:58:45,659 INFO  L151        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2024-11-03 01:58:45,659 INFO  L153        SettingsManager]:  * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2024-11-03 01:58:45,660 INFO  L151        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2024-11-03 01:58:45,660 INFO  L153        SettingsManager]:  * Create parallel compositions if possible=false
[2024-11-03 01:58:45,661 INFO  L153        SettingsManager]:  * Use SBE=true
[2024-11-03 01:58:45,661 INFO  L151        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2024-11-03 01:58:45,661 INFO  L153        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2024-11-03 01:58:45,662 INFO  L153        SettingsManager]:  * sizeof long=4
[2024-11-03 01:58:45,662 INFO  L153        SettingsManager]:  * sizeof POINTER=4
[2024-11-03 01:58:45,664 INFO  L153        SettingsManager]:  * Check division by zero=IGNORE
[2024-11-03 01:58:45,664 INFO  L153        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2024-11-03 01:58:45,665 INFO  L153        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2024-11-03 01:58:45,665 INFO  L153        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2024-11-03 01:58:45,665 INFO  L153        SettingsManager]:  * Adapt memory model on pointer casts if necessary=true
[2024-11-03 01:58:45,666 INFO  L153        SettingsManager]:  * Use bitvectors instead of ints=true
[2024-11-03 01:58:45,666 INFO  L153        SettingsManager]:  * Allow undefined functions=false
[2024-11-03 01:58:45,666 INFO  L153        SettingsManager]:  * Memory model=HoenickeLindenmann_4ByteResolution
[2024-11-03 01:58:45,666 INFO  L153        SettingsManager]:  * sizeof long double=12
[2024-11-03 01:58:45,667 INFO  L153        SettingsManager]:  * Check if freed pointer was valid=false
[2024-11-03 01:58:45,667 INFO  L153        SettingsManager]:  * Use constant arrays=true
[2024-11-03 01:58:45,667 INFO  L151        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2024-11-03 01:58:45,667 INFO  L153        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2024-11-03 01:58:45,668 INFO  L153        SettingsManager]:  * Only consider context switches at boundaries of atomic blocks=true
[2024-11-03 01:58:45,668 INFO  L153        SettingsManager]:  * SMT solver=External_DefaultMode
[2024-11-03 01:58:45,672 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2024-11-03 01:58:45,672 INFO  L151        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2024-11-03 01:58:45,672 INFO  L153        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2024-11-03 01:58:45,672 INFO  L153        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopHeads
[2024-11-03 01:58:45,672 INFO  L153        SettingsManager]:  * Trace refinement strategy=WOLF
[2024-11-03 01:58:45,672 INFO  L153        SettingsManager]:  * Command for external solver=cvc4 --incremental --print-success --lang smt
[2024-11-03 01:58:45,673 INFO  L153        SettingsManager]:  * Apply one-shot large block encoding in concurrent analysis=false
[2024-11-03 01:58:45,673 INFO  L153        SettingsManager]:  * Automaton type used in concurrency analysis=PETRI_NET
[2024-11-03 01:58:45,673 INFO  L153        SettingsManager]:  * Order on configurations for Petri net unfoldings=DBO
[2024-11-03 01:58:45,673 INFO  L153        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2024-11-03 01:58:45,673 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$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Allow undefined functions -> true
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> External_ModelsAndUnsatCoreMode
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Command for external solver -> cvc4 --incremental --print-success --lang smt
[2024-11-03 01:58:45,884 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2024-11-03 01:58:45,907 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2024-11-03 01:58:45,909 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2024-11-03 01:58:45,911 INFO  L270        PluginConnector]: Initializing CDTParser...
[2024-11-03 01:58:45,911 INFO  L274        PluginConnector]: CDTParser initialized
[2024-11-03 01:58:45,912 INFO  L431   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount50_file-81.i
[2024-11-03 01:58:47,279 INFO  L533              CDTParser]: Created temporary CDT project at NULL
[2024-11-03 01:58:47,484 INFO  L384              CDTParser]: Found 1 translation units.
[2024-11-03 01:58:47,485 INFO  L180              CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount50_file-81.i
[2024-11-03 01:58:47,496 INFO  L427              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f52d0bf14/45787e97dccb475da24f7da523b7420f/FLAG6f82d84b7
[2024-11-03 01:58:47,862 INFO  L435              CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f52d0bf14/45787e97dccb475da24f7da523b7420f
[2024-11-03 01:58:47,864 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2024-11-03 01:58:47,865 INFO  L133        ToolchainWalker]: Walking toolchain with 5 elements.
[2024-11-03 01:58:47,866 INFO  L112        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2024-11-03 01:58:47,866 INFO  L270        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2024-11-03 01:58:47,871 INFO  L274        PluginConnector]: CACSL2BoogieTranslator initialized
[2024-11-03 01:58:47,872 INFO  L184        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 01:58:47" (1/1) ...
[2024-11-03 01:58:47,873 INFO  L204        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4ae6cba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:58:47, skipping insertion in model container
[2024-11-03 01:58:47,873 INFO  L184        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 01:58:47" (1/1) ...
[2024-11-03 01:58:47,902 INFO  L175         MainTranslator]: Built tables and reachable declarations
[2024-11-03 01:58:48,045 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-81.i[915,928]
[2024-11-03 01:58:48,105 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2024-11-03 01:58:48,123 INFO  L200         MainTranslator]: Completed pre-run
[2024-11-03 01:58:48,134 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-81.i[915,928]
[2024-11-03 01:58:48,159 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2024-11-03 01:58:48,179 INFO  L204         MainTranslator]: Completed translation
[2024-11-03 01:58:48,181 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:58:48 WrapperNode
[2024-11-03 01:58:48,181 INFO  L131        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2024-11-03 01:58:48,183 INFO  L112        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2024-11-03 01:58:48,183 INFO  L270        PluginConnector]: Initializing Boogie Procedure Inliner...
[2024-11-03 01:58:48,183 INFO  L274        PluginConnector]: Boogie Procedure Inliner initialized
[2024-11-03 01:58:48,188 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:58:48" (1/1) ...
[2024-11-03 01:58:48,197 INFO  L184        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:58:48" (1/1) ...
[2024-11-03 01:58:48,221 INFO  L138                Inliner]: procedures = 27, calls = 39, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 151
[2024-11-03 01:58:48,221 INFO  L131        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2024-11-03 01:58:48,222 INFO  L112        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2024-11-03 01:58:48,222 INFO  L270        PluginConnector]: Initializing Boogie Preprocessor...
[2024-11-03 01:58:48,222 INFO  L274        PluginConnector]: Boogie Preprocessor initialized
[2024-11-03 01:58:48,235 INFO  L184        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:58:48" (1/1) ...
[2024-11-03 01:58:48,235 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:58:48" (1/1) ...
[2024-11-03 01:58:48,239 INFO  L184        PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:58:48" (1/1) ...
[2024-11-03 01:58:48,250 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 01:58:48,251 INFO  L184        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:58:48" (1/1) ...
[2024-11-03 01:58:48,251 INFO  L184        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:58:48" (1/1) ...
[2024-11-03 01:58:48,259 INFO  L184        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:58:48" (1/1) ...
[2024-11-03 01:58:48,262 INFO  L184        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:58:48" (1/1) ...
[2024-11-03 01:58:48,265 INFO  L184        PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:58:48" (1/1) ...
[2024-11-03 01:58:48,266 INFO  L184        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:58:48" (1/1) ...
[2024-11-03 01:58:48,269 INFO  L131        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2024-11-03 01:58:48,270 INFO  L112        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2024-11-03 01:58:48,270 INFO  L270        PluginConnector]: Initializing RCFGBuilder...
[2024-11-03 01:58:48,270 INFO  L274        PluginConnector]: RCFGBuilder initialized
[2024-11-03 01:58:48,271 INFO  L184        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:58:48" (1/1) ...
[2024-11-03 01:58:48,280 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2024-11-03 01:58:48,294 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2024-11-03 01:58:48,312 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 01:58:48,319 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 01:58:48,341 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2024-11-03 01:58:48,341 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0
[2024-11-03 01:58:48,341 INFO  L130     BoogieDeclarations]: Found specification of procedure assume_abort_if_not
[2024-11-03 01:58:48,341 INFO  L138     BoogieDeclarations]: Found implementation of procedure assume_abort_if_not
[2024-11-03 01:58:48,341 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2024-11-03 01:58:48,342 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2024-11-03 01:58:48,415 INFO  L238             CfgBuilder]: Building ICFG
[2024-11-03 01:58:48,417 INFO  L264             CfgBuilder]: Building CFG for each procedure with an implementation
[2024-11-03 01:58:48,749 INFO  L?                        ?]: Removed 14 outVars from TransFormulas that were not future-live.
[2024-11-03 01:58:48,749 INFO  L287             CfgBuilder]: Performing block encoding
[2024-11-03 01:58:48,766 INFO  L311             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2024-11-03 01:58:48,766 INFO  L316             CfgBuilder]: Removed 1 assume(true) statements.
[2024-11-03 01:58:48,767 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 01:58:48 BoogieIcfgContainer
[2024-11-03 01:58:48,767 INFO  L131        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2024-11-03 01:58:48,769 INFO  L112        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2024-11-03 01:58:48,770 INFO  L270        PluginConnector]: Initializing TraceAbstraction...
[2024-11-03 01:58:48,774 INFO  L274        PluginConnector]: TraceAbstraction initialized
[2024-11-03 01:58:48,774 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 01:58:47" (1/3) ...
[2024-11-03 01:58:48,775 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e57597f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 01:58:48, skipping insertion in model container
[2024-11-03 01:58:48,775 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:58:48" (2/3) ...
[2024-11-03 01:58:48,776 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e57597f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 01:58:48, skipping insertion in model container
[2024-11-03 01:58:48,776 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 01:58:48" (3/3) ...
[2024-11-03 01:58:48,778 INFO  L112   eAbstractionObserver]: Analyzing ICFG hardness_operatoramount_amount50_file-81.i
[2024-11-03 01:58:48,791 INFO  L214   ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2024-11-03 01:58:48,792 INFO  L154   ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2024-11-03 01:58:48,846 INFO  L332      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2024-11-03 01:58:48,852 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;@252e0c92, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2024-11-03 01:58:48,852 INFO  L334      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2024-11-03 01:58:48,858 INFO  L276                IsEmpty]: Start isEmpty. Operand  has 68 states, 39 states have (on average 1.3333333333333333) internal successors, (52), 40 states have internal predecessors, (52), 26 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26)
[2024-11-03 01:58:48,872 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 161
[2024-11-03 01:58:48,873 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-03 01:58:48,873 INFO  L215           NwaCegarLoop]: trace histogram [26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:58:48,874 INFO  L396      AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-03 01:58:48,879 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-03 01:58:48,879 INFO  L85        PathProgramCache]: Analyzing trace with hash -13092135, now seen corresponding path program 1 times
[2024-11-03 01:58:48,887 INFO  L118   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2024-11-03 01:58:48,888 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1093701867]
[2024-11-03 01:58:48,888 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-03 01:58:48,890 INFO  L173          SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt
[2024-11-03 01:58:48,891 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4
[2024-11-03 01:58:48,893 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 01:58:48,896 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 01:58:49,166 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-03 01:58:49,171 INFO  L255         TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 1 conjuncts are in the unsatisfiable core
[2024-11-03 01:58:49,186 INFO  L278         TraceCheckSpWp]: Computing forward predicates...
[2024-11-03 01:58:49,245 INFO  L134       CoverageAnalysis]: Checked inductivity of 1300 backedges. 50 proven. 0 refuted. 0 times theorem prover too weak. 1250 trivial. 0 not checked.
[2024-11-03 01:58:49,245 INFO  L311         TraceCheckSpWp]: Computing backward predicates...
[2024-11-03 01:58:49,405 INFO  L134       CoverageAnalysis]: Checked inductivity of 1300 backedges. 50 proven. 0 refuted. 0 times theorem prover too weak. 1250 trivial. 0 not checked.
[2024-11-03 01:58:49,406 INFO  L136   FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2024-11-03 01:58:49,406 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1093701867]
[2024-11-03 01:58:49,407 INFO  L158   FreeRefinementEngine]: IpTcStrategyModulePreferences [1093701867] provided 2 perfect and 0 imperfect interpolant sequences
[2024-11-03 01:58:49,408 INFO  L185   FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences.
[2024-11-03 01:58:49,408 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2
[2024-11-03 01:58:49,409 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1060893777]
[2024-11-03 01:58:49,410 INFO  L85    oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton
[2024-11-03 01:58:49,415 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 2 states
[2024-11-03 01:58:49,415 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2024-11-03 01:58:49,438 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants.
[2024-11-03 01:58:49,438 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2024-11-03 01:58:49,440 INFO  L87              Difference]: Start difference. First operand  has 68 states, 39 states have (on average 1.3333333333333333) internal successors, (52), 40 states have internal predecessors, (52), 26 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) Second operand  has 2 states, 2 states have (on average 17.5) internal successors, (35), 2 states have internal predecessors, (35), 1 states have call successors, (26), 1 states have call predecessors, (26), 2 states have return successors, (26), 2 states have call predecessors, (26), 1 states have call successors, (26)
[2024-11-03 01:58:49,465 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-03 01:58:49,465 INFO  L93              Difference]: Finished difference Result 129 states and 228 transitions.
[2024-11-03 01:58:49,466 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. 
[2024-11-03 01:58:49,467 INFO  L78                 Accepts]: Start accepts. Automaton has  has 2 states, 2 states have (on average 17.5) internal successors, (35), 2 states have internal predecessors, (35), 1 states have call successors, (26), 1 states have call predecessors, (26), 2 states have return successors, (26), 2 states have call predecessors, (26), 1 states have call successors, (26) Word has length 160
[2024-11-03 01:58:49,467 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-03 01:58:49,472 INFO  L225             Difference]: With dead ends: 129
[2024-11-03 01:58:49,472 INFO  L226             Difference]: Without dead ends: 64
[2024-11-03 01:58:49,475 INFO  L431           NwaCegarLoop]: 0 DeclaredPredicates, 318 GetRequests, 318 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 01:58:49,478 INFO  L432           NwaCegarLoop]: 97 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, 97 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 01:58:49,478 INFO  L433           NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 97 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2024-11-03 01:58:49,489 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 64 states.
[2024-11-03 01:58:49,510 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64.
[2024-11-03 01:58:49,512 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 64 states, 36 states have (on average 1.25) internal successors, (45), 36 states have internal predecessors, (45), 26 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26)
[2024-11-03 01:58:49,514 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 97 transitions.
[2024-11-03 01:58:49,517 INFO  L78                 Accepts]: Start accepts. Automaton has 64 states and 97 transitions. Word has length 160
[2024-11-03 01:58:49,518 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-03 01:58:49,518 INFO  L471      AbstractCegarLoop]: Abstraction has 64 states and 97 transitions.
[2024-11-03 01:58:49,519 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 2 states, 2 states have (on average 17.5) internal successors, (35), 2 states have internal predecessors, (35), 1 states have call successors, (26), 1 states have call predecessors, (26), 2 states have return successors, (26), 2 states have call predecessors, (26), 1 states have call successors, (26)
[2024-11-03 01:58:49,519 INFO  L276                IsEmpty]: Start isEmpty. Operand 64 states and 97 transitions.
[2024-11-03 01:58:49,524 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 161
[2024-11-03 01:58:49,524 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-03 01:58:49,524 INFO  L215           NwaCegarLoop]: trace histogram [26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:58:49,528 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (2)] Forceful destruction successful, exit code 0
[2024-11-03 01:58:49,726 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 01:58:49,727 INFO  L396      AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-03 01:58:49,728 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-03 01:58:49,728 INFO  L85        PathProgramCache]: Analyzing trace with hash 843592089, now seen corresponding path program 1 times
[2024-11-03 01:58:49,728 INFO  L118   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2024-11-03 01:58:49,728 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1217334404]
[2024-11-03 01:58:49,728 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-03 01:58:49,729 INFO  L173          SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt
[2024-11-03 01:58:49,729 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4
[2024-11-03 01:58:49,731 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 01:58:49,732 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 01:58:49,985 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-03 01:58:49,998 INFO  L255         TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 6 conjuncts are in the unsatisfiable core
[2024-11-03 01:58:50,010 INFO  L278         TraceCheckSpWp]: Computing forward predicates...
[2024-11-03 01:58:50,332 INFO  L134       CoverageAnalysis]: Checked inductivity of 1300 backedges. 585 proven. 51 refuted. 0 times theorem prover too weak. 664 trivial. 0 not checked.
[2024-11-03 01:58:50,333 INFO  L311         TraceCheckSpWp]: Computing backward predicates...
[2024-11-03 01:58:50,848 INFO  L134       CoverageAnalysis]: Checked inductivity of 1300 backedges. 24 proven. 51 refuted. 0 times theorem prover too weak. 1225 trivial. 0 not checked.
[2024-11-03 01:58:50,849 INFO  L136   FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2024-11-03 01:58:50,849 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1217334404]
[2024-11-03 01:58:50,849 INFO  L158   FreeRefinementEngine]: IpTcStrategyModulePreferences [1217334404] provided 0 perfect and 2 imperfect interpolant sequences
[2024-11-03 01:58:50,849 INFO  L185   FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2024-11-03 01:58:50,849 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10
[2024-11-03 01:58:50,850 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1203311995]
[2024-11-03 01:58:50,850 INFO  L85    oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2024-11-03 01:58:50,854 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 10 states
[2024-11-03 01:58:50,855 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2024-11-03 01:58:50,856 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants.
[2024-11-03 01:58:50,858 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90
[2024-11-03 01:58:50,859 INFO  L87              Difference]: Start difference. First operand 64 states and 97 transitions. Second operand  has 10 states, 10 states have (on average 5.9) internal successors, (59), 10 states have internal predecessors, (59), 3 states have call successors, (43), 2 states have call predecessors, (43), 4 states have return successors, (44), 3 states have call predecessors, (44), 3 states have call successors, (44)
[2024-11-03 01:58:52,006 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-03 01:58:52,007 INFO  L93              Difference]: Finished difference Result 190 states and 285 transitions.
[2024-11-03 01:58:52,007 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. 
[2024-11-03 01:58:52,007 INFO  L78                 Accepts]: Start accepts. Automaton has  has 10 states, 10 states have (on average 5.9) internal successors, (59), 10 states have internal predecessors, (59), 3 states have call successors, (43), 2 states have call predecessors, (43), 4 states have return successors, (44), 3 states have call predecessors, (44), 3 states have call successors, (44) Word has length 160
[2024-11-03 01:58:52,008 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-03 01:58:52,010 INFO  L225             Difference]: With dead ends: 190
[2024-11-03 01:58:52,011 INFO  L226             Difference]: Without dead ends: 129
[2024-11-03 01:58:52,012 INFO  L431           NwaCegarLoop]: 0 DeclaredPredicates, 332 GetRequests, 312 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=152, Invalid=310, Unknown=0, NotChecked=0, Total=462
[2024-11-03 01:58:52,013 INFO  L432           NwaCegarLoop]: 120 mSDtfsCounter, 139 mSDsluCounter, 163 mSDsCounter, 0 mSdLazyCounter, 347 mSolverCounterSat, 138 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 141 SdHoareTripleChecker+Valid, 283 SdHoareTripleChecker+Invalid, 485 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 138 IncrementalHoareTripleChecker+Valid, 347 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time
[2024-11-03 01:58:52,013 INFO  L433           NwaCegarLoop]: SdHoareTripleChecker [141 Valid, 283 Invalid, 485 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [138 Valid, 347 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time]
[2024-11-03 01:58:52,014 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 129 states.
[2024-11-03 01:58:52,034 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 68.
[2024-11-03 01:58:52,035 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 68 states, 39 states have (on average 1.205128205128205) internal successors, (47), 39 states have internal predecessors, (47), 26 states have call successors, (26), 2 states have call predecessors, (26), 2 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26)
[2024-11-03 01:58:52,036 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 99 transitions.
[2024-11-03 01:58:52,036 INFO  L78                 Accepts]: Start accepts. Automaton has 68 states and 99 transitions. Word has length 160
[2024-11-03 01:58:52,037 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-03 01:58:52,037 INFO  L471      AbstractCegarLoop]: Abstraction has 68 states and 99 transitions.
[2024-11-03 01:58:52,037 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 10 states, 10 states have (on average 5.9) internal successors, (59), 10 states have internal predecessors, (59), 3 states have call successors, (43), 2 states have call predecessors, (43), 4 states have return successors, (44), 3 states have call predecessors, (44), 3 states have call successors, (44)
[2024-11-03 01:58:52,037 INFO  L276                IsEmpty]: Start isEmpty. Operand 68 states and 99 transitions.
[2024-11-03 01:58:52,039 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 162
[2024-11-03 01:58:52,039 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-03 01:58:52,040 INFO  L215           NwaCegarLoop]: trace histogram [26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:58:52,045 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 01:58:52,240 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 01:58:52,241 INFO  L396      AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-03 01:58:52,241 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-03 01:58:52,242 INFO  L85        PathProgramCache]: Analyzing trace with hash 435052785, now seen corresponding path program 1 times
[2024-11-03 01:58:52,242 INFO  L118   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2024-11-03 01:58:52,242 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [652558910]
[2024-11-03 01:58:52,242 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-03 01:58:52,242 INFO  L173          SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt
[2024-11-03 01:58:52,242 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4
[2024-11-03 01:58:52,245 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 01:58:52,246 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 01:58:52,369 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-03 01:58:52,372 INFO  L255         TraceCheckSpWp]: Trace formula consists of 265 conjuncts, 2 conjuncts are in the unsatisfiable core
[2024-11-03 01:58:52,375 INFO  L278         TraceCheckSpWp]: Computing forward predicates...
[2024-11-03 01:58:52,391 INFO  L134       CoverageAnalysis]: Checked inductivity of 1300 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked.
[2024-11-03 01:58:52,391 INFO  L311         TraceCheckSpWp]: Computing backward predicates...
[2024-11-03 01:58:52,486 INFO  L134       CoverageAnalysis]: Checked inductivity of 1300 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked.
[2024-11-03 01:58:52,486 INFO  L136   FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2024-11-03 01:58:52,486 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [652558910]
[2024-11-03 01:58:52,486 INFO  L158   FreeRefinementEngine]: IpTcStrategyModulePreferences [652558910] provided 2 perfect and 0 imperfect interpolant sequences
[2024-11-03 01:58:52,487 INFO  L185   FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences.
[2024-11-03 01:58:52,487 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3
[2024-11-03 01:58:52,487 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [112239196]
[2024-11-03 01:58:52,487 INFO  L85    oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton
[2024-11-03 01:58:52,488 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2024-11-03 01:58:52,488 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2024-11-03 01:58:52,489 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2024-11-03 01:58:52,489 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2024-11-03 01:58:52,489 INFO  L87              Difference]: Start difference. First operand 68 states and 99 transitions. Second operand  has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26)
[2024-11-03 01:58:52,546 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-03 01:58:52,546 INFO  L93              Difference]: Finished difference Result 154 states and 220 transitions.
[2024-11-03 01:58:52,546 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2024-11-03 01:58:52,547 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) Word has length 161
[2024-11-03 01:58:52,548 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-03 01:58:52,549 INFO  L225             Difference]: With dead ends: 154
[2024-11-03 01:58:52,549 INFO  L226             Difference]: Without dead ends: 89
[2024-11-03 01:58:52,550 INFO  L431           NwaCegarLoop]: 0 DeclaredPredicates, 320 GetRequests, 319 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2024-11-03 01:58:52,551 INFO  L432           NwaCegarLoop]: 109 mSDtfsCounter, 21 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 195 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2024-11-03 01:58:52,551 INFO  L433           NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 195 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2024-11-03 01:58:52,554 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 89 states.
[2024-11-03 01:58:52,571 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 86.
[2024-11-03 01:58:52,571 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 86 states, 52 states have (on average 1.1730769230769231) internal successors, (61), 53 states have internal predecessors, (61), 30 states have call successors, (30), 3 states have call predecessors, (30), 3 states have return successors, (30), 29 states have call predecessors, (30), 30 states have call successors, (30)
[2024-11-03 01:58:52,573 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 121 transitions.
[2024-11-03 01:58:52,573 INFO  L78                 Accepts]: Start accepts. Automaton has 86 states and 121 transitions. Word has length 161
[2024-11-03 01:58:52,573 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-03 01:58:52,574 INFO  L471      AbstractCegarLoop]: Abstraction has 86 states and 121 transitions.
[2024-11-03 01:58:52,574 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26)
[2024-11-03 01:58:52,574 INFO  L276                IsEmpty]: Start isEmpty. Operand 86 states and 121 transitions.
[2024-11-03 01:58:52,576 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 162
[2024-11-03 01:58:52,576 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-03 01:58:52,576 INFO  L215           NwaCegarLoop]: trace histogram [26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:58:52,580 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (4)] Ended with exit code 0
[2024-11-03 01:58:52,779 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 01:58:52,779 INFO  L396      AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-03 01:58:52,780 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-03 01:58:52,780 INFO  L85        PathProgramCache]: Analyzing trace with hash 436899827, now seen corresponding path program 1 times
[2024-11-03 01:58:52,780 INFO  L118   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2024-11-03 01:58:52,780 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1304318978]
[2024-11-03 01:58:52,781 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-03 01:58:52,781 INFO  L173          SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt
[2024-11-03 01:58:52,781 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4
[2024-11-03 01:58:52,783 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 01:58:52,784 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 01:58:52,944 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-03 01:58:52,955 INFO  L255         TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 9 conjuncts are in the unsatisfiable core
[2024-11-03 01:58:52,960 INFO  L278         TraceCheckSpWp]: Computing forward predicates...
[2024-11-03 01:58:53,639 INFO  L134       CoverageAnalysis]: Checked inductivity of 1300 backedges. 25 proven. 75 refuted. 0 times theorem prover too weak. 1200 trivial. 0 not checked.
[2024-11-03 01:58:53,639 INFO  L311         TraceCheckSpWp]: Computing backward predicates...
[2024-11-03 01:58:54,003 INFO  L134       CoverageAnalysis]: Checked inductivity of 1300 backedges. 0 proven. 75 refuted. 0 times theorem prover too weak. 1225 trivial. 0 not checked.
[2024-11-03 01:58:54,003 INFO  L136   FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2024-11-03 01:58:54,004 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1304318978]
[2024-11-03 01:58:54,004 INFO  L158   FreeRefinementEngine]: IpTcStrategyModulePreferences [1304318978] provided 0 perfect and 2 imperfect interpolant sequences
[2024-11-03 01:58:54,004 INFO  L185   FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2024-11-03 01:58:54,004 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 14
[2024-11-03 01:58:54,004 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [953726290]
[2024-11-03 01:58:54,004 INFO  L85    oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2024-11-03 01:58:54,005 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 14 states
[2024-11-03 01:58:54,005 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2024-11-03 01:58:54,006 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants.
[2024-11-03 01:58:54,006 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182
[2024-11-03 01:58:54,006 INFO  L87              Difference]: Start difference. First operand 86 states and 121 transitions. Second operand  has 14 states, 14 states have (on average 4.5) internal successors, (63), 14 states have internal predecessors, (63), 4 states have call successors, (52), 3 states have call predecessors, (52), 4 states have return successors, (52), 2 states have call predecessors, (52), 4 states have call successors, (52)
[2024-11-03 01:58:55,169 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-03 01:58:55,169 INFO  L93              Difference]: Finished difference Result 348 states and 478 transitions.
[2024-11-03 01:58:55,169 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. 
[2024-11-03 01:58:55,170 INFO  L78                 Accepts]: Start accepts. Automaton has  has 14 states, 14 states have (on average 4.5) internal successors, (63), 14 states have internal predecessors, (63), 4 states have call successors, (52), 3 states have call predecessors, (52), 4 states have return successors, (52), 2 states have call predecessors, (52), 4 states have call successors, (52) Word has length 161
[2024-11-03 01:58:55,170 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-03 01:58:55,175 INFO  L225             Difference]: With dead ends: 348
[2024-11-03 01:58:55,176 INFO  L226             Difference]: Without dead ends: 265
[2024-11-03 01:58:55,177 INFO  L431           NwaCegarLoop]: 0 DeclaredPredicates, 338 GetRequests, 310 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 182 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=240, Invalid=630, Unknown=0, NotChecked=0, Total=870
[2024-11-03 01:58:55,178 INFO  L432           NwaCegarLoop]: 126 mSDtfsCounter, 337 mSDsluCounter, 247 mSDsCounter, 0 mSdLazyCounter, 468 mSolverCounterSat, 237 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 338 SdHoareTripleChecker+Valid, 373 SdHoareTripleChecker+Invalid, 705 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 237 IncrementalHoareTripleChecker+Valid, 468 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time
[2024-11-03 01:58:55,179 INFO  L433           NwaCegarLoop]: SdHoareTripleChecker [338 Valid, 373 Invalid, 705 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [237 Valid, 468 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time]
[2024-11-03 01:58:55,183 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 265 states.
[2024-11-03 01:58:55,217 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 265 to 94.
[2024-11-03 01:58:55,218 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 94 states, 58 states have (on average 1.1379310344827587) internal successors, (66), 59 states have internal predecessors, (66), 30 states have call successors, (30), 5 states have call predecessors, (30), 5 states have return successors, (30), 29 states have call predecessors, (30), 30 states have call successors, (30)
[2024-11-03 01:58:55,219 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 126 transitions.
[2024-11-03 01:58:55,220 INFO  L78                 Accepts]: Start accepts. Automaton has 94 states and 126 transitions. Word has length 161
[2024-11-03 01:58:55,220 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-03 01:58:55,220 INFO  L471      AbstractCegarLoop]: Abstraction has 94 states and 126 transitions.
[2024-11-03 01:58:55,221 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 14 states, 14 states have (on average 4.5) internal successors, (63), 14 states have internal predecessors, (63), 4 states have call successors, (52), 3 states have call predecessors, (52), 4 states have return successors, (52), 2 states have call predecessors, (52), 4 states have call successors, (52)
[2024-11-03 01:58:55,221 INFO  L276                IsEmpty]: Start isEmpty. Operand 94 states and 126 transitions.
[2024-11-03 01:58:55,223 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 162
[2024-11-03 01:58:55,223 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-03 01:58:55,223 INFO  L215           NwaCegarLoop]: trace histogram [26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:58:55,230 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 01:58:55,424 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 01:58:55,424 INFO  L396      AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-03 01:58:55,425 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-03 01:58:55,425 INFO  L85        PathProgramCache]: Analyzing trace with hash 695065265, now seen corresponding path program 1 times
[2024-11-03 01:58:55,425 INFO  L118   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2024-11-03 01:58:55,425 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [173737548]
[2024-11-03 01:58:55,425 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-03 01:58:55,425 INFO  L173          SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt
[2024-11-03 01:58:55,426 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4
[2024-11-03 01:58:55,428 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 01:58:55,429 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 01:58:55,743 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-03 01:58:55,758 INFO  L255         TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 45 conjuncts are in the unsatisfiable core
[2024-11-03 01:58:55,767 INFO  L278         TraceCheckSpWp]: Computing forward predicates...