/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 'z3 -smt2 -in SMTLIB2_COMPLIANT=true' -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf -i ../../../trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount100_file-99.i


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


This is Ultimate 0.2.5-dev-b75d321-m
[2024-11-02 21:44:02,451 INFO  L188        SettingsManager]: Resetting all preferences to default values...
[2024-11-02 21:44:02,507 INFO  L114        SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf
[2024-11-02 21:44:02,512 WARN  L101        SettingsManager]: Preference file contains the following unknown settings:
[2024-11-02 21:44:02,512 WARN  L103        SettingsManager]:   * de.uni_freiburg.informatik.ultimate.core.Log level for class
[2024-11-02 21:44:02,531 INFO  L130        SettingsManager]: Preferences different from defaults after loading the file:
[2024-11-02 21:44:02,532 INFO  L151        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2024-11-02 21:44:02,532 INFO  L153        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2024-11-02 21:44:02,532 INFO  L151        SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults:
[2024-11-02 21:44:02,533 INFO  L153        SettingsManager]:  * Use memory slicer=true
[2024-11-02 21:44:02,533 INFO  L151        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2024-11-02 21:44:02,534 INFO  L153        SettingsManager]:  * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2024-11-02 21:44:02,535 INFO  L151        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2024-11-02 21:44:02,538 INFO  L153        SettingsManager]:  * Create parallel compositions if possible=false
[2024-11-02 21:44:02,538 INFO  L153        SettingsManager]:  * Use SBE=true
[2024-11-02 21:44:02,538 INFO  L151        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2024-11-02 21:44:02,538 INFO  L153        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2024-11-02 21:44:02,538 INFO  L153        SettingsManager]:  * sizeof long=4
[2024-11-02 21:44:02,539 INFO  L153        SettingsManager]:  * sizeof POINTER=4
[2024-11-02 21:44:02,539 INFO  L153        SettingsManager]:  * Check division by zero=IGNORE
[2024-11-02 21:44:02,539 INFO  L153        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2024-11-02 21:44:02,540 INFO  L153        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2024-11-02 21:44:02,540 INFO  L153        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2024-11-02 21:44:02,540 INFO  L153        SettingsManager]:  * Adapt memory model on pointer casts if necessary=true
[2024-11-02 21:44:02,541 INFO  L153        SettingsManager]:  * Use bitvectors instead of ints=true
[2024-11-02 21:44:02,541 INFO  L153        SettingsManager]:  * Allow undefined functions=false
[2024-11-02 21:44:02,541 INFO  L153        SettingsManager]:  * Memory model=HoenickeLindenmann_4ByteResolution
[2024-11-02 21:44:02,541 INFO  L153        SettingsManager]:  * sizeof long double=12
[2024-11-02 21:44:02,541 INFO  L153        SettingsManager]:  * Check if freed pointer was valid=false
[2024-11-02 21:44:02,541 INFO  L153        SettingsManager]:  * Use constant arrays=true
[2024-11-02 21:44:02,542 INFO  L151        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2024-11-02 21:44:02,542 INFO  L153        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2024-11-02 21:44:02,542 INFO  L153        SettingsManager]:  * Only consider context switches at boundaries of atomic blocks=true
[2024-11-02 21:44:02,542 INFO  L153        SettingsManager]:  * SMT solver=External_DefaultMode
[2024-11-02 21:44:02,542 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2024-11-02 21:44:02,542 INFO  L151        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2024-11-02 21:44:02,543 INFO  L153        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2024-11-02 21:44:02,543 INFO  L153        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopHeads
[2024-11-02 21:44:02,543 INFO  L153        SettingsManager]:  * Trace refinement strategy=WOLF
[2024-11-02 21:44:02,543 INFO  L153        SettingsManager]:  * Command for external solver=cvc4 --incremental --print-success --lang smt
[2024-11-02 21:44:02,543 INFO  L153        SettingsManager]:  * Apply one-shot large block encoding in concurrent analysis=false
[2024-11-02 21:44:02,544 INFO  L153        SettingsManager]:  * Automaton type used in concurrency analysis=PETRI_NET
[2024-11-02 21:44:02,544 INFO  L153        SettingsManager]:  * Order on configurations for Petri net unfoldings=DBO
[2024-11-02 21:44:02,544 INFO  L153        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2024-11-02 21:44:02,544 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$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Allow undefined functions -> true
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> External_ModelsAndUnsatCoreMode
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Command for external solver -> z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-02 21:44:02,730 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2024-11-02 21:44:02,749 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2024-11-02 21:44:02,753 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2024-11-02 21:44:02,754 INFO  L270        PluginConnector]: Initializing CDTParser...
[2024-11-02 21:44:02,754 INFO  L274        PluginConnector]: CDTParser initialized
[2024-11-02 21:44:02,755 INFO  L431   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount100_file-99.i
[2024-11-02 21:44:03,997 INFO  L533              CDTParser]: Created temporary CDT project at NULL
[2024-11-02 21:44:04,155 INFO  L384              CDTParser]: Found 1 translation units.
[2024-11-02 21:44:04,156 INFO  L180              CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount100_file-99.i
[2024-11-02 21:44:04,169 INFO  L427              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7763dc137/c8772df97af448c4ba9f1f9423964a68/FLAGddbd216db
[2024-11-02 21:44:04,182 INFO  L435              CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7763dc137/c8772df97af448c4ba9f1f9423964a68
[2024-11-02 21:44:04,184 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2024-11-02 21:44:04,185 INFO  L133        ToolchainWalker]: Walking toolchain with 5 elements.
[2024-11-02 21:44:04,186 INFO  L112        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2024-11-02 21:44:04,186 INFO  L270        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2024-11-02 21:44:04,190 INFO  L274        PluginConnector]: CACSL2BoogieTranslator initialized
[2024-11-02 21:44:04,191 INFO  L184        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 09:44:04" (1/1) ...
[2024-11-02 21:44:04,191 INFO  L204        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6508828d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:44:04, skipping insertion in model container
[2024-11-02 21:44:04,192 INFO  L184        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 09:44:04" (1/1) ...
[2024-11-02 21:44:04,219 INFO  L175         MainTranslator]: Built tables and reachable declarations
[2024-11-02 21:44:04,344 WARN  L250   ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount100_file-99.i[916,929]
[2024-11-02 21:44:04,406 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2024-11-02 21:44:04,419 INFO  L200         MainTranslator]: Completed pre-run
[2024-11-02 21:44:04,429 WARN  L250   ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount100_file-99.i[916,929]
[2024-11-02 21:44:04,475 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2024-11-02 21:44:04,494 INFO  L204         MainTranslator]: Completed translation
[2024-11-02 21:44:04,496 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:44:04 WrapperNode
[2024-11-02 21:44:04,496 INFO  L131        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2024-11-02 21:44:04,497 INFO  L112        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2024-11-02 21:44:04,497 INFO  L270        PluginConnector]: Initializing Boogie Procedure Inliner...
[2024-11-02 21:44:04,497 INFO  L274        PluginConnector]: Boogie Procedure Inliner initialized
[2024-11-02 21:44:04,503 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:44:04" (1/1) ...
[2024-11-02 21:44:04,515 INFO  L184        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:44:04" (1/1) ...
[2024-11-02 21:44:04,539 INFO  L138                Inliner]: procedures = 27, calls = 38, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 208
[2024-11-02 21:44:04,539 INFO  L131        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2024-11-02 21:44:04,540 INFO  L112        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2024-11-02 21:44:04,540 INFO  L270        PluginConnector]: Initializing Boogie Preprocessor...
[2024-11-02 21:44:04,540 INFO  L274        PluginConnector]: Boogie Preprocessor initialized
[2024-11-02 21:44:04,549 INFO  L184        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:44:04" (1/1) ...
[2024-11-02 21:44:04,549 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:44:04" (1/1) ...
[2024-11-02 21:44:04,552 INFO  L184        PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:44:04" (1/1) ...
[2024-11-02 21:44:04,564 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].
[2024-11-02 21:44:04,564 INFO  L184        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:44:04" (1/1) ...
[2024-11-02 21:44:04,564 INFO  L184        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:44:04" (1/1) ...
[2024-11-02 21:44:04,576 INFO  L184        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:44:04" (1/1) ...
[2024-11-02 21:44:04,579 INFO  L184        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:44:04" (1/1) ...
[2024-11-02 21:44:04,585 INFO  L184        PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:44:04" (1/1) ...
[2024-11-02 21:44:04,587 INFO  L184        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:44:04" (1/1) ...
[2024-11-02 21:44:04,590 INFO  L131        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2024-11-02 21:44:04,591 INFO  L112        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2024-11-02 21:44:04,591 INFO  L270        PluginConnector]: Initializing RCFGBuilder...
[2024-11-02 21:44:04,591 INFO  L274        PluginConnector]: RCFGBuilder initialized
[2024-11-02 21:44:04,592 INFO  L184        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:44:04" (1/1) ...
[2024-11-02 21:44:04,597 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2024-11-02 21:44:04,606 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2024-11-02 21:44:04,621 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)
[2024-11-02 21:44:04,623 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
[2024-11-02 21:44:04,644 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2024-11-02 21:44:04,644 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0
[2024-11-02 21:44:04,644 INFO  L130     BoogieDeclarations]: Found specification of procedure assume_abort_if_not
[2024-11-02 21:44:04,644 INFO  L138     BoogieDeclarations]: Found implementation of procedure assume_abort_if_not
[2024-11-02 21:44:04,644 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2024-11-02 21:44:04,645 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2024-11-02 21:44:04,737 INFO  L238             CfgBuilder]: Building ICFG
[2024-11-02 21:44:04,739 INFO  L264             CfgBuilder]: Building CFG for each procedure with an implementation
[2024-11-02 21:44:06,031 INFO  L?                        ?]: Removed 30 outVars from TransFormulas that were not future-live.
[2024-11-02 21:44:06,031 INFO  L287             CfgBuilder]: Performing block encoding
[2024-11-02 21:44:06,048 INFO  L311             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2024-11-02 21:44:06,048 INFO  L316             CfgBuilder]: Removed 1 assume(true) statements.
[2024-11-02 21:44:06,048 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 09:44:06 BoogieIcfgContainer
[2024-11-02 21:44:06,049 INFO  L131        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2024-11-02 21:44:06,050 INFO  L112        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2024-11-02 21:44:06,050 INFO  L270        PluginConnector]: Initializing TraceAbstraction...
[2024-11-02 21:44:06,052 INFO  L274        PluginConnector]: TraceAbstraction initialized
[2024-11-02 21:44:06,052 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 09:44:04" (1/3) ...
[2024-11-02 21:44:06,053 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56928747 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 09:44:06, skipping insertion in model container
[2024-11-02 21:44:06,053 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:44:04" (2/3) ...
[2024-11-02 21:44:06,053 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56928747 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 09:44:06, skipping insertion in model container
[2024-11-02 21:44:06,053 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 09:44:06" (3/3) ...
[2024-11-02 21:44:06,054 INFO  L112   eAbstractionObserver]: Analyzing ICFG hardness_operatoramount_amount100_file-99.i
[2024-11-02 21:44:06,066 INFO  L214   ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2024-11-02 21:44:06,067 INFO  L154   ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2024-11-02 21:44:06,112 INFO  L332      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2024-11-02 21:44:06,116 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;@51c3e27b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2024-11-02 21:44:06,117 INFO  L334      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2024-11-02 21:44:06,123 INFO  L276                IsEmpty]: Start isEmpty. Operand  has 89 states, 61 states have (on average 1.4754098360655739) internal successors, (90), 62 states have internal predecessors, (90), 25 states have call successors, (25), 1 states have call predecessors, (25), 1 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25)
[2024-11-02 21:44:06,133 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 166
[2024-11-02 21:44:06,134 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-02 21:44:06,134 INFO  L215           NwaCegarLoop]: trace histogram [25, 25, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-02 21:44:06,135 INFO  L396      AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-02 21:44:06,139 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-02 21:44:06,140 INFO  L85        PathProgramCache]: Analyzing trace with hash 30523677, now seen corresponding path program 1 times
[2024-11-02 21:44:06,145 INFO  L118   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2024-11-02 21:44:06,146 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1565809406]
[2024-11-02 21:44:06,146 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-02 21:44:06,148 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-02 21:44:06,149 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2024-11-02 21:44:06,150 INFO  L229       MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-02 21:44:06,151 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process
[2024-11-02 21:44:06,351 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-02 21:44:06,362 INFO  L255         TraceCheckSpWp]: Trace formula consists of 283 conjuncts, 1 conjuncts are in the unsatisfiable core
[2024-11-02 21:44:06,376 INFO  L278         TraceCheckSpWp]: Computing forward predicates...
[2024-11-02 21:44:06,420 INFO  L134       CoverageAnalysis]: Checked inductivity of 1200 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 1152 trivial. 0 not checked.
[2024-11-02 21:44:06,420 INFO  L311         TraceCheckSpWp]: Computing backward predicates...
[2024-11-02 21:44:06,584 INFO  L134       CoverageAnalysis]: Checked inductivity of 1200 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 1152 trivial. 0 not checked.
[2024-11-02 21:44:06,585 INFO  L136   FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2024-11-02 21:44:06,585 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1565809406]
[2024-11-02 21:44:06,586 INFO  L158   FreeRefinementEngine]: IpTcStrategyModulePreferences [1565809406] provided 1 perfect and 1 imperfect interpolant sequences
[2024-11-02 21:44:06,586 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2024-11-02 21:44:06,586 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2
[2024-11-02 21:44:06,587 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1606987123]
[2024-11-02 21:44:06,588 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-02 21:44:06,592 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 2 states
[2024-11-02 21:44:06,593 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2024-11-02 21:44:06,614 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants.
[2024-11-02 21:44:06,615 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2024-11-02 21:44:06,617 INFO  L87              Difference]: Start difference. First operand  has 89 states, 61 states have (on average 1.4754098360655739) internal successors, (90), 62 states have internal predecessors, (90), 25 states have call successors, (25), 1 states have call predecessors, (25), 1 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) Second operand  has 2 states, 2 states have (on average 22.5) internal successors, (45), 2 states have internal predecessors, (45), 2 states have call successors, (25), 2 states have call predecessors, (25), 1 states have return successors, (25), 1 states have call predecessors, (25), 2 states have call successors, (25)
[2024-11-02 21:44:06,648 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-02 21:44:06,649 INFO  L93              Difference]: Finished difference Result 171 states and 299 transitions.
[2024-11-02 21:44:06,651 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. 
[2024-11-02 21:44:06,652 INFO  L78                 Accepts]: Start accepts. Automaton has  has 2 states, 2 states have (on average 22.5) internal successors, (45), 2 states have internal predecessors, (45), 2 states have call successors, (25), 2 states have call predecessors, (25), 1 states have return successors, (25), 1 states have call predecessors, (25), 2 states have call successors, (25) Word has length 165
[2024-11-02 21:44:06,653 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-02 21:44:06,661 INFO  L225             Difference]: With dead ends: 171
[2024-11-02 21:44:06,661 INFO  L226             Difference]: Without dead ends: 85
[2024-11-02 21:44:06,666 INFO  L431           NwaCegarLoop]: 0 DeclaredPredicates, 328 GetRequests, 328 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2024-11-02 21:44:06,669 INFO  L432           NwaCegarLoop]: 132 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, 132 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
[2024-11-02 21:44:06,670 INFO  L433           NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 132 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2024-11-02 21:44:06,682 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 85 states.
[2024-11-02 21:44:06,704 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 85.
[2024-11-02 21:44:06,706 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 85 states, 58 states have (on average 1.4137931034482758) internal successors, (82), 58 states have internal predecessors, (82), 25 states have call successors, (25), 1 states have call predecessors, (25), 1 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25)
[2024-11-02 21:44:06,707 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 132 transitions.
[2024-11-02 21:44:06,709 INFO  L78                 Accepts]: Start accepts. Automaton has 85 states and 132 transitions. Word has length 165
[2024-11-02 21:44:06,709 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-02 21:44:06,710 INFO  L471      AbstractCegarLoop]: Abstraction has 85 states and 132 transitions.
[2024-11-02 21:44:06,710 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 2 states, 2 states have (on average 22.5) internal successors, (45), 2 states have internal predecessors, (45), 2 states have call successors, (25), 2 states have call predecessors, (25), 1 states have return successors, (25), 1 states have call predecessors, (25), 2 states have call successors, (25)
[2024-11-02 21:44:06,710 INFO  L276                IsEmpty]: Start isEmpty. Operand 85 states and 132 transitions.
[2024-11-02 21:44:06,715 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 167
[2024-11-02 21:44:06,716 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-02 21:44:06,716 INFO  L215           NwaCegarLoop]: trace histogram [25, 25, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-02 21:44:06,749 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0
[2024-11-02 21:44:06,916 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-02 21:44:06,918 INFO  L396      AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-02 21:44:06,919 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-02 21:44:06,919 INFO  L85        PathProgramCache]: Analyzing trace with hash -1247852466, now seen corresponding path program 1 times
[2024-11-02 21:44:06,919 INFO  L118   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2024-11-02 21:44:06,920 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1539929344]
[2024-11-02 21:44:06,920 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-02 21:44:06,920 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-02 21:44:06,920 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2024-11-02 21:44:06,922 INFO  L229       MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-02 21:44:06,926 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process
[2024-11-02 21:44:07,087 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-02 21:44:07,097 INFO  L255         TraceCheckSpWp]: Trace formula consists of 285 conjuncts, 2 conjuncts are in the unsatisfiable core
[2024-11-02 21:44:07,101 INFO  L278         TraceCheckSpWp]: Computing forward predicates...
[2024-11-02 21:44:07,466 INFO  L134       CoverageAnalysis]: Checked inductivity of 1200 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1200 trivial. 0 not checked.
[2024-11-02 21:44:07,466 INFO  L311         TraceCheckSpWp]: Computing backward predicates...
[2024-11-02 21:44:07,698 INFO  L134       CoverageAnalysis]: Checked inductivity of 1200 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1200 trivial. 0 not checked.
[2024-11-02 21:44:07,698 INFO  L136   FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2024-11-02 21:44:07,698 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1539929344]
[2024-11-02 21:44:07,699 INFO  L158   FreeRefinementEngine]: IpTcStrategyModulePreferences [1539929344] provided 2 perfect and 0 imperfect interpolant sequences
[2024-11-02 21:44:07,699 INFO  L185   FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences.
[2024-11-02 21:44:07,699 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 3] imperfect sequences [] total 4
[2024-11-02 21:44:07,699 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1446128625]
[2024-11-02 21:44:07,699 INFO  L85    oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton
[2024-11-02 21:44:07,701 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2024-11-02 21:44:07,701 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2024-11-02 21:44:07,702 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2024-11-02 21:44:07,702 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2024-11-02 21:44:07,702 INFO  L87              Difference]: Start difference. First operand 85 states and 132 transitions. Second operand  has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 2 states have call successors, (50), 2 states have call predecessors, (50), 2 states have return successors, (50), 2 states have call predecessors, (50), 2 states have call successors, (50)
[2024-11-02 21:44:08,438 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-02 21:44:08,438 INFO  L93              Difference]: Finished difference Result 329 states and 515 transitions.
[2024-11-02 21:44:08,438 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2024-11-02 21:44:08,439 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 2 states have call successors, (50), 2 states have call predecessors, (50), 2 states have return successors, (50), 2 states have call predecessors, (50), 2 states have call successors, (50) Word has length 166
[2024-11-02 21:44:08,442 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-02 21:44:08,445 INFO  L225             Difference]: With dead ends: 329
[2024-11-02 21:44:08,445 INFO  L226             Difference]: Without dead ends: 247
[2024-11-02 21:44:08,446 INFO  L431           NwaCegarLoop]: 0 DeclaredPredicates, 330 GetRequests, 328 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2024-11-02 21:44:08,449 INFO  L432           NwaCegarLoop]: 142 mSDtfsCounter, 142 mSDsluCounter, 188 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 142 SdHoareTripleChecker+Valid, 330 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time
[2024-11-02 21:44:08,449 INFO  L433           NwaCegarLoop]: SdHoareTripleChecker [142 Valid, 330 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time]
[2024-11-02 21:44:08,451 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 247 states.
[2024-11-02 21:44:08,486 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 247 to 163.
[2024-11-02 21:44:08,486 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 163 states, 110 states have (on average 1.4) internal successors, (154), 110 states have internal predecessors, (154), 50 states have call successors, (50), 2 states have call predecessors, (50), 2 states have return successors, (50), 50 states have call predecessors, (50), 50 states have call successors, (50)
[2024-11-02 21:44:08,488 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 254 transitions.
[2024-11-02 21:44:08,489 INFO  L78                 Accepts]: Start accepts. Automaton has 163 states and 254 transitions. Word has length 166
[2024-11-02 21:44:08,489 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-02 21:44:08,489 INFO  L471      AbstractCegarLoop]: Abstraction has 163 states and 254 transitions.
[2024-11-02 21:44:08,490 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 2 states have call successors, (50), 2 states have call predecessors, (50), 2 states have return successors, (50), 2 states have call predecessors, (50), 2 states have call successors, (50)
[2024-11-02 21:44:08,490 INFO  L276                IsEmpty]: Start isEmpty. Operand 163 states and 254 transitions.
[2024-11-02 21:44:08,491 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 168
[2024-11-02 21:44:08,492 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-02 21:44:08,492 INFO  L215           NwaCegarLoop]: trace histogram [25, 25, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-02 21:44:08,510 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0
[2024-11-02 21:44:08,692 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-02 21:44:08,693 INFO  L396      AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-02 21:44:08,693 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-02 21:44:08,693 INFO  L85        PathProgramCache]: Analyzing trace with hash 2025366357, now seen corresponding path program 1 times
[2024-11-02 21:44:08,694 INFO  L118   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2024-11-02 21:44:08,694 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [925059182]
[2024-11-02 21:44:08,694 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-02 21:44:08,694 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-02 21:44:08,694 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2024-11-02 21:44:08,696 INFO  L229       MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-02 21:44:08,698 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process
[2024-11-02 21:44:08,824 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-02 21:44:08,834 INFO  L255         TraceCheckSpWp]: Trace formula consists of 287 conjuncts, 3 conjuncts are in the unsatisfiable core
[2024-11-02 21:44:08,841 INFO  L278         TraceCheckSpWp]: Computing forward predicates...
[2024-11-02 21:44:08,880 INFO  L134       CoverageAnalysis]: Checked inductivity of 1200 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1200 trivial. 0 not checked.
[2024-11-02 21:44:08,880 INFO  L311         TraceCheckSpWp]: Computing backward predicates...
[2024-11-02 21:44:08,995 INFO  L134       CoverageAnalysis]: Checked inductivity of 1200 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1200 trivial. 0 not checked.
[2024-11-02 21:44:09,008 INFO  L136   FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2024-11-02 21:44:09,009 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [925059182]
[2024-11-02 21:44:09,009 INFO  L158   FreeRefinementEngine]: IpTcStrategyModulePreferences [925059182] provided 2 perfect and 0 imperfect interpolant sequences
[2024-11-02 21:44:09,013 INFO  L185   FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences.
[2024-11-02 21:44:09,013 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4
[2024-11-02 21:44:09,014 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1716655812]
[2024-11-02 21:44:09,014 INFO  L85    oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton
[2024-11-02 21:44:09,014 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2024-11-02 21:44:09,014 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2024-11-02 21:44:09,015 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2024-11-02 21:44:09,015 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2024-11-02 21:44:09,015 INFO  L87              Difference]: Start difference. First operand 163 states and 254 transitions. Second operand  has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 1 states have call successors, (25), 1 states have call predecessors, (25), 1 states have return successors, (25), 1 states have call predecessors, (25), 1 states have call successors, (25)
[2024-11-02 21:44:09,553 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-02 21:44:09,554 INFO  L93              Difference]: Finished difference Result 383 states and 595 transitions.
[2024-11-02 21:44:09,564 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2024-11-02 21:44:09,565 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 1 states have call successors, (25), 1 states have call predecessors, (25), 1 states have return successors, (25), 1 states have call predecessors, (25), 1 states have call successors, (25) Word has length 167
[2024-11-02 21:44:09,566 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-02 21:44:09,568 INFO  L225             Difference]: With dead ends: 383
[2024-11-02 21:44:09,569 INFO  L226             Difference]: Without dead ends: 223
[2024-11-02 21:44:09,570 INFO  L431           NwaCegarLoop]: 0 DeclaredPredicates, 332 GetRequests, 330 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2024-11-02 21:44:09,570 INFO  L432           NwaCegarLoop]: 153 mSDtfsCounter, 49 mSDsluCounter, 228 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 381 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time
[2024-11-02 21:44:09,571 INFO  L433           NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 381 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time]
[2024-11-02 21:44:09,571 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 223 states.
[2024-11-02 21:44:09,585 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 163.
[2024-11-02 21:44:09,586 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 163 states, 110 states have (on average 1.3818181818181818) internal successors, (152), 110 states have internal predecessors, (152), 50 states have call successors, (50), 2 states have call predecessors, (50), 2 states have return successors, (50), 50 states have call predecessors, (50), 50 states have call successors, (50)
[2024-11-02 21:44:09,591 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 252 transitions.
[2024-11-02 21:44:09,591 INFO  L78                 Accepts]: Start accepts. Automaton has 163 states and 252 transitions. Word has length 167
[2024-11-02 21:44:09,592 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-02 21:44:09,592 INFO  L471      AbstractCegarLoop]: Abstraction has 163 states and 252 transitions.
[2024-11-02 21:44:09,592 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 1 states have call successors, (25), 1 states have call predecessors, (25), 1 states have return successors, (25), 1 states have call predecessors, (25), 1 states have call successors, (25)
[2024-11-02 21:44:09,592 INFO  L276                IsEmpty]: Start isEmpty. Operand 163 states and 252 transitions.
[2024-11-02 21:44:09,594 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 169
[2024-11-02 21:44:09,594 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-02 21:44:09,594 INFO  L215           NwaCegarLoop]: trace histogram [25, 25, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-02 21:44:09,612 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0
[2024-11-02 21:44:09,798 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-02 21:44:09,799 INFO  L396      AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-02 21:44:09,799 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-02 21:44:09,800 INFO  L85        PathProgramCache]: Analyzing trace with hash 397647756, now seen corresponding path program 1 times
[2024-11-02 21:44:09,800 INFO  L118   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2024-11-02 21:44:09,800 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1508383268]
[2024-11-02 21:44:09,800 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-02 21:44:09,800 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-02 21:44:09,800 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2024-11-02 21:44:09,801 INFO  L229       MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-02 21:44:09,802 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process
[2024-11-02 21:44:09,918 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-02 21:44:09,928 INFO  L255         TraceCheckSpWp]: Trace formula consists of 287 conjuncts, 6 conjuncts are in the unsatisfiable core
[2024-11-02 21:44:09,933 INFO  L278         TraceCheckSpWp]: Computing forward predicates...
[2024-11-02 21:44:10,701 INFO  L134       CoverageAnalysis]: Checked inductivity of 1200 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1200 trivial. 0 not checked.
[2024-11-02 21:44:10,701 INFO  L311         TraceCheckSpWp]: Computing backward predicates...
[2024-11-02 21:44:10,894 INFO  L134       CoverageAnalysis]: Checked inductivity of 1200 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1200 trivial. 0 not checked.
[2024-11-02 21:44:10,894 INFO  L136   FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2024-11-02 21:44:10,894 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1508383268]
[2024-11-02 21:44:10,894 INFO  L158   FreeRefinementEngine]: IpTcStrategyModulePreferences [1508383268] provided 2 perfect and 0 imperfect interpolant sequences
[2024-11-02 21:44:10,895 INFO  L185   FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences.
[2024-11-02 21:44:10,895 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 5] imperfect sequences [] total 8
[2024-11-02 21:44:10,895 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1583128473]
[2024-11-02 21:44:10,895 INFO  L85    oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton
[2024-11-02 21:44:10,895 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 8 states
[2024-11-02 21:44:10,895 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2024-11-02 21:44:10,896 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2024-11-02 21:44:10,896 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56
[2024-11-02 21:44:10,896 INFO  L87              Difference]: Start difference. First operand 163 states and 252 transitions. Second operand  has 8 states, 8 states have (on average 8.75) internal successors, (70), 8 states have internal predecessors, (70), 2 states have call successors, (50), 2 states have call predecessors, (50), 2 states have return successors, (50), 2 states have call predecessors, (50), 2 states have call successors, (50)
[2024-11-02 21:44:12,391 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-02 21:44:12,391 INFO  L93              Difference]: Finished difference Result 426 states and 659 transitions.
[2024-11-02 21:44:12,401 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2024-11-02 21:44:12,402 INFO  L78                 Accepts]: Start accepts. Automaton has  has 8 states, 8 states have (on average 8.75) internal successors, (70), 8 states have internal predecessors, (70), 2 states have call successors, (50), 2 states have call predecessors, (50), 2 states have return successors, (50), 2 states have call predecessors, (50), 2 states have call successors, (50) Word has length 168
[2024-11-02 21:44:12,402 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-02 21:44:12,404 INFO  L225             Difference]: With dead ends: 426
[2024-11-02 21:44:12,404 INFO  L226             Difference]: Without dead ends: 266
[2024-11-02 21:44:12,405 INFO  L431           NwaCegarLoop]: 0 DeclaredPredicates, 337 GetRequests, 329 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90
[2024-11-02 21:44:12,406 INFO  L432           NwaCegarLoop]: 127 mSDtfsCounter, 97 mSDsluCounter, 634 mSDsCounter, 0 mSdLazyCounter, 144 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 761 SdHoareTripleChecker+Invalid, 195 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 144 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time
[2024-11-02 21:44:12,407 INFO  L433           NwaCegarLoop]: SdHoareTripleChecker [97 Valid, 761 Invalid, 195 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 144 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time]
[2024-11-02 21:44:12,407 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 266 states.
[2024-11-02 21:44:12,434 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 210.
[2024-11-02 21:44:12,435 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 210 states, 131 states have (on average 1.3206106870229009) internal successors, (173), 131 states have internal predecessors, (173), 75 states have call successors, (75), 3 states have call predecessors, (75), 3 states have return successors, (75), 75 states have call predecessors, (75), 75 states have call successors, (75)
[2024-11-02 21:44:12,436 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 323 transitions.
[2024-11-02 21:44:12,437 INFO  L78                 Accepts]: Start accepts. Automaton has 210 states and 323 transitions. Word has length 168
[2024-11-02 21:44:12,437 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-02 21:44:12,437 INFO  L471      AbstractCegarLoop]: Abstraction has 210 states and 323 transitions.
[2024-11-02 21:44:12,437 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 8 states, 8 states have (on average 8.75) internal successors, (70), 8 states have internal predecessors, (70), 2 states have call successors, (50), 2 states have call predecessors, (50), 2 states have return successors, (50), 2 states have call predecessors, (50), 2 states have call successors, (50)
[2024-11-02 21:44:12,437 INFO  L276                IsEmpty]: Start isEmpty. Operand 210 states and 323 transitions.
[2024-11-02 21:44:12,439 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 170
[2024-11-02 21:44:12,439 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-02 21:44:12,439 INFO  L215           NwaCegarLoop]: trace histogram [25, 25, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-02 21:44:12,458 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0
[2024-11-02 21:44:12,643 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-02 21:44:12,644 INFO  L396      AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-02 21:44:12,644 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-02 21:44:12,644 INFO  L85        PathProgramCache]: Analyzing trace with hash 1160158238, now seen corresponding path program 1 times
[2024-11-02 21:44:12,644 INFO  L118   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2024-11-02 21:44:12,644 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [375820915]
[2024-11-02 21:44:12,644 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-02 21:44:12,645 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-02 21:44:12,645 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2024-11-02 21:44:12,646 INFO  L229       MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-02 21:44:12,647 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process
[2024-11-02 21:44:12,758 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-02 21:44:12,768 INFO  L255         TraceCheckSpWp]: Trace formula consists of 289 conjuncts, 4 conjuncts are in the unsatisfiable core
[2024-11-02 21:44:12,772 INFO  L278         TraceCheckSpWp]: Computing forward predicates...
[2024-11-02 21:44:13,003 INFO  L134       CoverageAnalysis]: Checked inductivity of 1200 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1200 trivial. 0 not checked.
[2024-11-02 21:44:13,003 INFO  L311         TraceCheckSpWp]: Computing backward predicates...
[2024-11-02 21:44:13,272 INFO  L134       CoverageAnalysis]: Checked inductivity of 1200 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1200 trivial. 0 not checked.
[2024-11-02 21:44:13,273 INFO  L136   FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2024-11-02 21:44:13,273 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [375820915]
[2024-11-02 21:44:13,273 INFO  L158   FreeRefinementEngine]: IpTcStrategyModulePreferences [375820915] provided 2 perfect and 0 imperfect interpolant sequences
[2024-11-02 21:44:13,273 INFO  L185   FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences.
[2024-11-02 21:44:13,273 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 5] imperfect sequences [] total 8
[2024-11-02 21:44:13,273 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [365681535]
[2024-11-02 21:44:13,273 INFO  L85    oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton
[2024-11-02 21:44:13,274 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 8 states
[2024-11-02 21:44:13,274 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2024-11-02 21:44:13,274 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2024-11-02 21:44:13,274 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56
[2024-11-02 21:44:13,275 INFO  L87              Difference]: Start difference. First operand 210 states and 323 transitions. Second operand  has 8 states, 8 states have (on average 9.0) internal successors, (72), 8 states have internal predecessors, (72), 2 states have call successors, (50), 2 states have call predecessors, (50), 2 states have return successors, (50), 2 states have call predecessors, (50), 2 states have call successors, (50)
[2024-11-02 21:44:14,122 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-02 21:44:14,122 INFO  L93              Difference]: Finished difference Result 426 states and 658 transitions.
[2024-11-02 21:44:14,131 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2024-11-02 21:44:14,131 INFO  L78                 Accepts]: Start accepts. Automaton has  has 8 states, 8 states have (on average 9.0) internal successors, (72), 8 states have internal predecessors, (72), 2 states have call successors, (50), 2 states have call predecessors, (50), 2 states have return successors, (50), 2 states have call predecessors, (50), 2 states have call successors, (50) Word has length 169
[2024-11-02 21:44:14,132 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-02 21:44:14,134 INFO  L225             Difference]: With dead ends: 426
[2024-11-02 21:44:14,134 INFO  L226             Difference]: Without dead ends: 266
[2024-11-02 21:44:14,134 INFO  L431           NwaCegarLoop]: 0 DeclaredPredicates, 339 GetRequests, 331 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90
[2024-11-02 21:44:14,135 INFO  L432           NwaCegarLoop]: 127 mSDtfsCounter, 131 mSDsluCounter, 497 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 101 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 131 SdHoareTripleChecker+Valid, 624 SdHoareTripleChecker+Invalid, 123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 101 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time
[2024-11-02 21:44:14,135 INFO  L433           NwaCegarLoop]: SdHoareTripleChecker [131 Valid, 624 Invalid, 123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [101 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time]
[2024-11-02 21:44:14,136 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 266 states.
[2024-11-02 21:44:14,149 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 211.
[2024-11-02 21:44:14,150 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 211 states, 132 states have (on average 1.3181818181818181) internal successors, (174), 132 states have internal predecessors, (174), 75 states have call successors, (75), 3 states have call predecessors, (75), 3 states have return successors, (75), 75 states have call predecessors, (75), 75 states have call successors, (75)
[2024-11-02 21:44:14,151 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 324 transitions.
[2024-11-02 21:44:14,151 INFO  L78                 Accepts]: Start accepts. Automaton has 211 states and 324 transitions. Word has length 169
[2024-11-02 21:44:14,152 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-02 21:44:14,152 INFO  L471      AbstractCegarLoop]: Abstraction has 211 states and 324 transitions.
[2024-11-02 21:44:14,152 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 8 states, 8 states have (on average 9.0) internal successors, (72), 8 states have internal predecessors, (72), 2 states have call successors, (50), 2 states have call predecessors, (50), 2 states have return successors, (50), 2 states have call predecessors, (50), 2 states have call successors, (50)
[2024-11-02 21:44:14,152 INFO  L276                IsEmpty]: Start isEmpty. Operand 211 states and 324 transitions.
[2024-11-02 21:44:14,153 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 171
[2024-11-02 21:44:14,153 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-02 21:44:14,153 INFO  L215           NwaCegarLoop]: trace histogram [25, 25, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-02 21:44:14,171 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0
[2024-11-02 21:44:14,356 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-02 21:44:14,357 INFO  L396      AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-02 21:44:14,357 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-02 21:44:14,357 INFO  L85        PathProgramCache]: Analyzing trace with hash 992251073, now seen corresponding path program 1 times
[2024-11-02 21:44:14,357 INFO  L118   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2024-11-02 21:44:14,357 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1764767411]
[2024-11-02 21:44:14,357 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-02 21:44:14,357 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-02 21:44:14,358 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2024-11-02 21:44:14,358 INFO  L229       MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-02 21:44:14,359 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process
[2024-11-02 21:44:14,468 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-02 21:44:14,478 INFO  L255         TraceCheckSpWp]: Trace formula consists of 290 conjuncts, 6 conjuncts are in the unsatisfiable core
[2024-11-02 21:44:14,481 INFO  L278         TraceCheckSpWp]: Computing forward predicates...
[2024-11-02 21:44:15,050 INFO  L134       CoverageAnalysis]: Checked inductivity of 1200 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1200 trivial. 0 not checked.
[2024-11-02 21:44:15,051 INFO  L311         TraceCheckSpWp]: Computing backward predicates...
[2024-11-02 21:44:15,245 INFO  L134       CoverageAnalysis]: Checked inductivity of 1200 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1200 trivial. 0 not checked.
[2024-11-02 21:44:15,245 INFO  L136   FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2024-11-02 21:44:15,246 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1764767411]
[2024-11-02 21:44:15,246 INFO  L158   FreeRefinementEngine]: IpTcStrategyModulePreferences [1764767411] provided 2 perfect and 0 imperfect interpolant sequences
[2024-11-02 21:44:15,246 INFO  L185   FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences.
[2024-11-02 21:44:15,246 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 5] imperfect sequences [] total 8
[2024-11-02 21:44:15,246 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2029000349]
[2024-11-02 21:44:15,246 INFO  L85    oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton
[2024-11-02 21:44:15,246 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 8 states
[2024-11-02 21:44:15,247 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2024-11-02 21:44:15,247 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2024-11-02 21:44:15,247 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56
[2024-11-02 21:44:15,247 INFO  L87              Difference]: Start difference. First operand 211 states and 324 transitions. Second operand  has 8 states, 8 states have (on average 9.25) internal successors, (74), 8 states have internal predecessors, (74), 2 states have call successors, (50), 2 states have call predecessors, (50), 2 states have return successors, (50), 2 states have call predecessors, (50), 2 states have call successors, (50)
[2024-11-02 21:44:16,464 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-02 21:44:16,465 INFO  L93              Difference]: Finished difference Result 426 states and 657 transitions.
[2024-11-02 21:44:16,476 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2024-11-02 21:44:16,476 INFO  L78                 Accepts]: Start accepts. Automaton has  has 8 states, 8 states have (on average 9.25) internal successors, (74), 8 states have internal predecessors, (74), 2 states have call successors, (50), 2 states have call predecessors, (50), 2 states have return successors, (50), 2 states have call predecessors, (50), 2 states have call successors, (50) Word has length 170
[2024-11-02 21:44:16,477 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-02 21:44:16,478 INFO  L225             Difference]: With dead ends: 426
[2024-11-02 21:44:16,478 INFO  L226             Difference]: Without dead ends: 266
[2024-11-02 21:44:16,479 INFO  L431           NwaCegarLoop]: 0 DeclaredPredicates, 341 GetRequests, 333 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90
[2024-11-02 21:44:16,480 INFO  L432           NwaCegarLoop]: 125 mSDtfsCounter, 138 mSDsluCounter, 493 mSDsCounter, 0 mSdLazyCounter, 159 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 138 SdHoareTripleChecker+Valid, 618 SdHoareTripleChecker+Invalid, 211 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 159 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time
[2024-11-02 21:44:16,480 INFO  L433           NwaCegarLoop]: SdHoareTripleChecker [138 Valid, 618 Invalid, 211 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 159 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time]
[2024-11-02 21:44:16,480 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 266 states.
[2024-11-02 21:44:16,497 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 212.
[2024-11-02 21:44:16,498 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 212 states, 133 states have (on average 1.3157894736842106) internal successors, (175), 133 states have internal predecessors, (175), 75 states have call successors, (75), 3 states have call predecessors, (75), 3 states have return successors, (75), 75 states have call predecessors, (75), 75 states have call successors, (75)
[2024-11-02 21:44:16,499 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 325 transitions.
[2024-11-02 21:44:16,499 INFO  L78                 Accepts]: Start accepts. Automaton has 212 states and 325 transitions. Word has length 170
[2024-11-02 21:44:16,500 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-02 21:44:16,500 INFO  L471      AbstractCegarLoop]: Abstraction has 212 states and 325 transitions.
[2024-11-02 21:44:16,500 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 8 states, 8 states have (on average 9.25) internal successors, (74), 8 states have internal predecessors, (74), 2 states have call successors, (50), 2 states have call predecessors, (50), 2 states have return successors, (50), 2 states have call predecessors, (50), 2 states have call successors, (50)
[2024-11-02 21:44:16,500 INFO  L276                IsEmpty]: Start isEmpty. Operand 212 states and 325 transitions.
[2024-11-02 21:44:16,501 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 171
[2024-11-02 21:44:16,501 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-02 21:44:16,501 INFO  L215           NwaCegarLoop]: trace histogram [25, 25, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-02 21:44:16,522 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0
[2024-11-02 21:44:16,702 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-02 21:44:16,702 INFO  L396      AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-02 21:44:16,702 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-02 21:44:16,702 INFO  L85        PathProgramCache]: Analyzing trace with hash -813187261, now seen corresponding path program 1 times
[2024-11-02 21:44:16,702 INFO  L118   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2024-11-02 21:44:16,703 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1488282236]
[2024-11-02 21:44:16,703 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-02 21:44:16,703 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-02 21:44:16,703 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2024-11-02 21:44:16,706 INFO  L229       MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-02 21:44:16,707 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process
[2024-11-02 21:44:17,117 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-02 21:44:17,130 INFO  L255         TraceCheckSpWp]: Trace formula consists of 290 conjuncts, 31 conjuncts are in the unsatisfiable core
[2024-11-02 21:44:17,139 INFO  L278         TraceCheckSpWp]: Computing forward predicates...