/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_amount50_file-17.i


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


This is Ultimate 0.2.5-dev-b75d321-m
[2024-11-02 22:27:51,176 INFO  L188        SettingsManager]: Resetting all preferences to default values...
[2024-11-02 22:27:51,248 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 22:27:51,252 WARN  L101        SettingsManager]: Preference file contains the following unknown settings:
[2024-11-02 22:27:51,253 WARN  L103        SettingsManager]:   * de.uni_freiburg.informatik.ultimate.core.Log level for class
[2024-11-02 22:27:51,277 INFO  L130        SettingsManager]: Preferences different from defaults after loading the file:
[2024-11-02 22:27:51,279 INFO  L151        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2024-11-02 22:27:51,280 INFO  L153        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2024-11-02 22:27:51,280 INFO  L151        SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults:
[2024-11-02 22:27:51,281 INFO  L153        SettingsManager]:  * Use memory slicer=true
[2024-11-02 22:27:51,281 INFO  L151        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2024-11-02 22:27:51,281 INFO  L153        SettingsManager]:  * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2024-11-02 22:27:51,282 INFO  L151        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2024-11-02 22:27:51,283 INFO  L153        SettingsManager]:  * Create parallel compositions if possible=false
[2024-11-02 22:27:51,283 INFO  L153        SettingsManager]:  * Use SBE=true
[2024-11-02 22:27:51,283 INFO  L151        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2024-11-02 22:27:51,284 INFO  L153        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2024-11-02 22:27:51,284 INFO  L153        SettingsManager]:  * sizeof long=4
[2024-11-02 22:27:51,284 INFO  L153        SettingsManager]:  * sizeof POINTER=4
[2024-11-02 22:27:51,285 INFO  L153        SettingsManager]:  * Check division by zero=IGNORE
[2024-11-02 22:27:51,285 INFO  L153        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2024-11-02 22:27:51,289 INFO  L153        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2024-11-02 22:27:51,289 INFO  L153        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2024-11-02 22:27:51,290 INFO  L153        SettingsManager]:  * Adapt memory model on pointer casts if necessary=true
[2024-11-02 22:27:51,290 INFO  L153        SettingsManager]:  * Use bitvectors instead of ints=true
[2024-11-02 22:27:51,290 INFO  L153        SettingsManager]:  * Allow undefined functions=false
[2024-11-02 22:27:51,290 INFO  L153        SettingsManager]:  * Memory model=HoenickeLindenmann_4ByteResolution
[2024-11-02 22:27:51,291 INFO  L153        SettingsManager]:  * sizeof long double=12
[2024-11-02 22:27:51,291 INFO  L153        SettingsManager]:  * Check if freed pointer was valid=false
[2024-11-02 22:27:51,291 INFO  L153        SettingsManager]:  * Use constant arrays=true
[2024-11-02 22:27:51,291 INFO  L151        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2024-11-02 22:27:51,292 INFO  L153        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2024-11-02 22:27:51,292 INFO  L153        SettingsManager]:  * Only consider context switches at boundaries of atomic blocks=true
[2024-11-02 22:27:51,293 INFO  L153        SettingsManager]:  * SMT solver=External_DefaultMode
[2024-11-02 22:27:51,293 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2024-11-02 22:27:51,293 INFO  L151        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2024-11-02 22:27:51,293 INFO  L153        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2024-11-02 22:27:51,294 INFO  L153        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopHeads
[2024-11-02 22:27:51,294 INFO  L153        SettingsManager]:  * Trace refinement strategy=WOLF
[2024-11-02 22:27:51,294 INFO  L153        SettingsManager]:  * Command for external solver=cvc4 --incremental --print-success --lang smt
[2024-11-02 22:27:51,294 INFO  L153        SettingsManager]:  * Apply one-shot large block encoding in concurrent analysis=false
[2024-11-02 22:27:51,295 INFO  L153        SettingsManager]:  * Automaton type used in concurrency analysis=PETRI_NET
[2024-11-02 22:27:51,295 INFO  L153        SettingsManager]:  * Order on configurations for Petri net unfoldings=DBO
[2024-11-02 22:27:51,295 INFO  L153        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2024-11-02 22:27:51,295 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$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Allow undefined functions -> true
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> External_ModelsAndUnsatCoreMode
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Command for external solver -> z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-02 22:27:51,554 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2024-11-02 22:27:51,578 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2024-11-02 22:27:51,582 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2024-11-02 22:27:51,582 INFO  L270        PluginConnector]: Initializing CDTParser...
[2024-11-02 22:27:51,583 INFO  L274        PluginConnector]: CDTParser initialized
[2024-11-02 22:27:51,584 INFO  L431   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount50_file-17.i
[2024-11-02 22:27:53,007 INFO  L533              CDTParser]: Created temporary CDT project at NULL
[2024-11-02 22:27:53,200 INFO  L384              CDTParser]: Found 1 translation units.
[2024-11-02 22:27:53,200 INFO  L180              CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount50_file-17.i
[2024-11-02 22:27:53,213 INFO  L427              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/22cd51b85/f70c63a15e624d5bb8299e0aec22b0c9/FLAGb02b5f148
[2024-11-02 22:27:53,224 INFO  L435              CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/22cd51b85/f70c63a15e624d5bb8299e0aec22b0c9
[2024-11-02 22:27:53,226 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2024-11-02 22:27:53,227 INFO  L133        ToolchainWalker]: Walking toolchain with 5 elements.
[2024-11-02 22:27:53,228 INFO  L112        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2024-11-02 22:27:53,228 INFO  L270        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2024-11-02 22:27:53,232 INFO  L274        PluginConnector]: CACSL2BoogieTranslator initialized
[2024-11-02 22:27:53,233 INFO  L184        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 10:27:53" (1/1) ...
[2024-11-02 22:27:53,233 INFO  L204        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@296c5489 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:27:53, skipping insertion in model container
[2024-11-02 22:27:53,234 INFO  L184        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 10:27:53" (1/1) ...
[2024-11-02 22:27:53,264 INFO  L175         MainTranslator]: Built tables and reachable declarations
[2024-11-02 22:27:53,432 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-17.i[915,928]
[2024-11-02 22:27:53,498 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2024-11-02 22:27:53,515 INFO  L200         MainTranslator]: Completed pre-run
[2024-11-02 22:27:53,526 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-17.i[915,928]
[2024-11-02 22:27:53,552 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2024-11-02 22:27:53,577 INFO  L204         MainTranslator]: Completed translation
[2024-11-02 22:27:53,577 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:27:53 WrapperNode
[2024-11-02 22:27:53,578 INFO  L131        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2024-11-02 22:27:53,579 INFO  L112        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2024-11-02 22:27:53,579 INFO  L270        PluginConnector]: Initializing Boogie Procedure Inliner...
[2024-11-02 22:27:53,579 INFO  L274        PluginConnector]: Boogie Procedure Inliner initialized
[2024-11-02 22:27:53,584 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:27:53" (1/1) ...
[2024-11-02 22:27:53,594 INFO  L184        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:27:53" (1/1) ...
[2024-11-02 22:27:53,624 INFO  L138                Inliner]: procedures = 27, calls = 31, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 129
[2024-11-02 22:27:53,625 INFO  L131        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2024-11-02 22:27:53,626 INFO  L112        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2024-11-02 22:27:53,626 INFO  L270        PluginConnector]: Initializing Boogie Preprocessor...
[2024-11-02 22:27:53,626 INFO  L274        PluginConnector]: Boogie Preprocessor initialized
[2024-11-02 22:27:53,636 INFO  L184        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:27:53" (1/1) ...
[2024-11-02 22:27:53,637 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:27:53" (1/1) ...
[2024-11-02 22:27:53,641 INFO  L184        PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:27:53" (1/1) ...
[2024-11-02 22:27:53,651 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 22:27:53,652 INFO  L184        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:27:53" (1/1) ...
[2024-11-02 22:27:53,652 INFO  L184        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:27:53" (1/1) ...
[2024-11-02 22:27:53,665 INFO  L184        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:27:53" (1/1) ...
[2024-11-02 22:27:53,667 INFO  L184        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:27:53" (1/1) ...
[2024-11-02 22:27:53,669 INFO  L184        PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:27:53" (1/1) ...
[2024-11-02 22:27:53,671 INFO  L184        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:27:53" (1/1) ...
[2024-11-02 22:27:53,674 INFO  L131        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2024-11-02 22:27:53,675 INFO  L112        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2024-11-02 22:27:53,675 INFO  L270        PluginConnector]: Initializing RCFGBuilder...
[2024-11-02 22:27:53,675 INFO  L274        PluginConnector]: RCFGBuilder initialized
[2024-11-02 22:27:53,676 INFO  L184        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:27:53" (1/1) ...
[2024-11-02 22:27:53,681 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2024-11-02 22:27:53,692 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2024-11-02 22:27:53,704 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 22:27:53,705 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 22:27:53,730 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2024-11-02 22:27:53,731 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0
[2024-11-02 22:27:53,731 INFO  L130     BoogieDeclarations]: Found specification of procedure assume_abort_if_not
[2024-11-02 22:27:53,731 INFO  L138     BoogieDeclarations]: Found implementation of procedure assume_abort_if_not
[2024-11-02 22:27:53,731 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2024-11-02 22:27:53,732 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2024-11-02 22:27:53,804 INFO  L238             CfgBuilder]: Building ICFG
[2024-11-02 22:27:53,806 INFO  L264             CfgBuilder]: Building CFG for each procedure with an implementation
[2024-11-02 22:27:54,340 INFO  L?                        ?]: Removed 16 outVars from TransFormulas that were not future-live.
[2024-11-02 22:27:54,341 INFO  L287             CfgBuilder]: Performing block encoding
[2024-11-02 22:27:54,355 INFO  L311             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2024-11-02 22:27:54,356 INFO  L316             CfgBuilder]: Removed 1 assume(true) statements.
[2024-11-02 22:27:54,356 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 10:27:54 BoogieIcfgContainer
[2024-11-02 22:27:54,356 INFO  L131        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2024-11-02 22:27:54,359 INFO  L112        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2024-11-02 22:27:54,359 INFO  L270        PluginConnector]: Initializing TraceAbstraction...
[2024-11-02 22:27:54,368 INFO  L274        PluginConnector]: TraceAbstraction initialized
[2024-11-02 22:27:54,368 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 10:27:53" (1/3) ...
[2024-11-02 22:27:54,369 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e1b14d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 10:27:54, skipping insertion in model container
[2024-11-02 22:27:54,370 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:27:53" (2/3) ...
[2024-11-02 22:27:54,370 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e1b14d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 10:27:54, skipping insertion in model container
[2024-11-02 22:27:54,370 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 10:27:54" (3/3) ...
[2024-11-02 22:27:54,372 INFO  L112   eAbstractionObserver]: Analyzing ICFG hardness_operatoramount_amount50_file-17.i
[2024-11-02 22:27:54,384 INFO  L214   ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2024-11-02 22:27:54,384 INFO  L154   ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2024-11-02 22:27:54,431 INFO  L332      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2024-11-02 22:27:54,436 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;@534b116f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2024-11-02 22:27:54,437 INFO  L334      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2024-11-02 22:27:54,440 INFO  L276                IsEmpty]: Start isEmpty. Operand  has 61 states, 40 states have (on average 1.375) internal successors, (55), 41 states have internal predecessors, (55), 18 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18)
[2024-11-02 22:27:54,450 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 120
[2024-11-02 22:27:54,450 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-02 22:27:54,451 INFO  L215           NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:27:54,451 INFO  L396      AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-02 22:27:54,455 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-02 22:27:54,455 INFO  L85        PathProgramCache]: Analyzing trace with hash 558496771, now seen corresponding path program 1 times
[2024-11-02 22:27:54,461 INFO  L118   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2024-11-02 22:27:54,461 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [871313121]
[2024-11-02 22:27:54,462 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-02 22:27:54,463 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-02 22:27:54,463 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2024-11-02 22:27:54,465 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 22:27:54,466 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 22:27:54,672 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-02 22:27:54,681 INFO  L255         TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 1 conjuncts are in the unsatisfiable core
[2024-11-02 22:27:54,692 INFO  L278         TraceCheckSpWp]: Computing forward predicates...
[2024-11-02 22:27:54,733 INFO  L134       CoverageAnalysis]: Checked inductivity of 612 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 578 trivial. 0 not checked.
[2024-11-02 22:27:54,733 INFO  L311         TraceCheckSpWp]: Computing backward predicates...
[2024-11-02 22:27:54,880 INFO  L134       CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 578 trivial. 0 not checked.
[2024-11-02 22:27:54,881 INFO  L136   FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2024-11-02 22:27:54,881 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [871313121]
[2024-11-02 22:27:54,882 INFO  L158   FreeRefinementEngine]: IpTcStrategyModulePreferences [871313121] provided 1 perfect and 1 imperfect interpolant sequences
[2024-11-02 22:27:54,882 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2024-11-02 22:27:54,882 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2
[2024-11-02 22:27:54,884 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1156993602]
[2024-11-02 22:27:54,885 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-02 22:27:54,889 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 2 states
[2024-11-02 22:27:54,890 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2024-11-02 22:27:54,914 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants.
[2024-11-02 22:27:54,915 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2024-11-02 22:27:54,917 INFO  L87              Difference]: Start difference. First operand  has 61 states, 40 states have (on average 1.375) internal successors, (55), 41 states have internal predecessors, (55), 18 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) Second operand  has 2 states, 2 states have (on average 17.0) internal successors, (34), 2 states have internal predecessors, (34), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 2 states have call successors, (18)
[2024-11-02 22:27:54,940 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-02 22:27:54,940 INFO  L93              Difference]: Finished difference Result 115 states and 194 transitions.
[2024-11-02 22:27:54,942 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. 
[2024-11-02 22:27:54,943 INFO  L78                 Accepts]: Start accepts. Automaton has  has 2 states, 2 states have (on average 17.0) internal successors, (34), 2 states have internal predecessors, (34), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 2 states have call successors, (18) Word has length 119
[2024-11-02 22:27:54,943 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-02 22:27:54,948 INFO  L225             Difference]: With dead ends: 115
[2024-11-02 22:27:54,948 INFO  L226             Difference]: Without dead ends: 57
[2024-11-02 22:27:54,951 INFO  L431           NwaCegarLoop]: 0 DeclaredPredicates, 236 GetRequests, 236 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 22:27:54,953 INFO  L432           NwaCegarLoop]: 84 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, 84 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 22:27:54,954 INFO  L433           NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2024-11-02 22:27:54,965 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 57 states.
[2024-11-02 22:27:54,982 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57.
[2024-11-02 22:27:54,983 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 57 states, 37 states have (on average 1.2972972972972974) internal successors, (48), 37 states have internal predecessors, (48), 18 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18)
[2024-11-02 22:27:54,985 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 84 transitions.
[2024-11-02 22:27:54,987 INFO  L78                 Accepts]: Start accepts. Automaton has 57 states and 84 transitions. Word has length 119
[2024-11-02 22:27:54,987 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-02 22:27:54,988 INFO  L471      AbstractCegarLoop]: Abstraction has 57 states and 84 transitions.
[2024-11-02 22:27:54,989 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 2 states, 2 states have (on average 17.0) internal successors, (34), 2 states have internal predecessors, (34), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 2 states have call successors, (18)
[2024-11-02 22:27:54,989 INFO  L276                IsEmpty]: Start isEmpty. Operand 57 states and 84 transitions.
[2024-11-02 22:27:54,993 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 120
[2024-11-02 22:27:54,993 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-02 22:27:54,993 INFO  L215           NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:27:55,017 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0
[2024-11-02 22:27:55,195 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 22:27:55,196 INFO  L396      AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-02 22:27:55,197 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-02 22:27:55,197 INFO  L85        PathProgramCache]: Analyzing trace with hash 640030975, now seen corresponding path program 1 times
[2024-11-02 22:27:55,197 INFO  L118   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2024-11-02 22:27:55,197 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1545984550]
[2024-11-02 22:27:55,197 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-02 22:27:55,198 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-02 22:27:55,198 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2024-11-02 22:27:55,199 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 22:27:55,201 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 22:27:55,337 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-02 22:27:55,346 INFO  L255         TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 5 conjuncts are in the unsatisfiable core
[2024-11-02 22:27:55,352 INFO  L278         TraceCheckSpWp]: Computing forward predicates...
[2024-11-02 22:27:55,639 INFO  L134       CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked.
[2024-11-02 22:27:55,640 INFO  L311         TraceCheckSpWp]: Computing backward predicates...
[2024-11-02 22:27:55,832 INFO  L134       CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked.
[2024-11-02 22:27:55,832 INFO  L136   FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2024-11-02 22:27:55,832 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1545984550]
[2024-11-02 22:27:55,833 INFO  L158   FreeRefinementEngine]: IpTcStrategyModulePreferences [1545984550] provided 2 perfect and 0 imperfect interpolant sequences
[2024-11-02 22:27:55,833 INFO  L185   FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences.
[2024-11-02 22:27:55,833 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 5] imperfect sequences [] total 8
[2024-11-02 22:27:55,833 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1036048225]
[2024-11-02 22:27:55,834 INFO  L85    oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton
[2024-11-02 22:27:55,836 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 8 states
[2024-11-02 22:27:55,837 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2024-11-02 22:27:55,838 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2024-11-02 22:27:55,838 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56
[2024-11-02 22:27:55,839 INFO  L87              Difference]: Start difference. First operand 57 states and 84 transitions. Second operand  has 8 states, 8 states have (on average 6.375) internal successors, (51), 8 states have internal predecessors, (51), 2 states have call successors, (36), 2 states have call predecessors, (36), 2 states have return successors, (36), 2 states have call predecessors, (36), 2 states have call successors, (36)
[2024-11-02 22:27:56,657 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-02 22:27:56,657 INFO  L93              Difference]: Finished difference Result 185 states and 274 transitions.
[2024-11-02 22:27:56,667 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2024-11-02 22:27:56,667 INFO  L78                 Accepts]: Start accepts. Automaton has  has 8 states, 8 states have (on average 6.375) internal successors, (51), 8 states have internal predecessors, (51), 2 states have call successors, (36), 2 states have call predecessors, (36), 2 states have return successors, (36), 2 states have call predecessors, (36), 2 states have call successors, (36) Word has length 119
[2024-11-02 22:27:56,668 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-02 22:27:56,670 INFO  L225             Difference]: With dead ends: 185
[2024-11-02 22:27:56,671 INFO  L226             Difference]: Without dead ends: 131
[2024-11-02 22:27:56,671 INFO  L431           NwaCegarLoop]: 0 DeclaredPredicates, 239 GetRequests, 231 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90
[2024-11-02 22:27:56,673 INFO  L432           NwaCegarLoop]: 77 mSDtfsCounter, 121 mSDsluCounter, 247 mSDsCounter, 0 mSdLazyCounter, 109 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 121 SdHoareTripleChecker+Valid, 324 SdHoareTripleChecker+Invalid, 186 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time
[2024-11-02 22:27:56,673 INFO  L433           NwaCegarLoop]: SdHoareTripleChecker [121 Valid, 324 Invalid, 186 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 109 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time]
[2024-11-02 22:27:56,674 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 131 states.
[2024-11-02 22:27:56,706 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 92.
[2024-11-02 22:27:56,707 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 92 states, 53 states have (on average 1.1886792452830188) internal successors, (63), 53 states have internal predecessors, (63), 36 states have call successors, (36), 2 states have call predecessors, (36), 2 states have return successors, (36), 36 states have call predecessors, (36), 36 states have call successors, (36)
[2024-11-02 22:27:56,711 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 135 transitions.
[2024-11-02 22:27:56,711 INFO  L78                 Accepts]: Start accepts. Automaton has 92 states and 135 transitions. Word has length 119
[2024-11-02 22:27:56,712 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-02 22:27:56,712 INFO  L471      AbstractCegarLoop]: Abstraction has 92 states and 135 transitions.
[2024-11-02 22:27:56,713 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 8 states, 8 states have (on average 6.375) internal successors, (51), 8 states have internal predecessors, (51), 2 states have call successors, (36), 2 states have call predecessors, (36), 2 states have return successors, (36), 2 states have call predecessors, (36), 2 states have call successors, (36)
[2024-11-02 22:27:56,713 INFO  L276                IsEmpty]: Start isEmpty. Operand 92 states and 135 transitions.
[2024-11-02 22:27:56,715 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 121
[2024-11-02 22:27:56,715 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-02 22:27:56,715 INFO  L215           NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:27:56,737 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 22:27:56,916 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 22:27:56,917 INFO  L396      AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-02 22:27:56,917 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-02 22:27:56,918 INFO  L85        PathProgramCache]: Analyzing trace with hash -1847668821, now seen corresponding path program 1 times
[2024-11-02 22:27:56,918 INFO  L118   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2024-11-02 22:27:56,918 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [389802700]
[2024-11-02 22:27:56,918 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-02 22:27:56,918 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-02 22:27:56,919 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2024-11-02 22:27:56,920 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 22:27:56,922 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 22:27:57,060 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-02 22:27:57,071 INFO  L255         TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 18 conjuncts are in the unsatisfiable core
[2024-11-02 22:27:57,081 INFO  L278         TraceCheckSpWp]: Computing forward predicates...
[2024-11-02 22:27:58,248 INFO  L134       CoverageAnalysis]: Checked inductivity of 612 backedges. 360 proven. 72 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked.
[2024-11-02 22:27:58,248 INFO  L311         TraceCheckSpWp]: Computing backward predicates...
[2024-11-02 22:27:59,041 INFO  L134       CoverageAnalysis]: Checked inductivity of 612 backedges. 78 proven. 66 refuted. 0 times theorem prover too weak. 468 trivial. 0 not checked.
[2024-11-02 22:27:59,042 INFO  L136   FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2024-11-02 22:27:59,042 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [389802700]
[2024-11-02 22:27:59,042 INFO  L158   FreeRefinementEngine]: IpTcStrategyModulePreferences [389802700] provided 0 perfect and 2 imperfect interpolant sequences
[2024-11-02 22:27:59,042 INFO  L185   FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2024-11-02 22:27:59,042 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 14] total 30
[2024-11-02 22:27:59,042 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1410593191]
[2024-11-02 22:27:59,043 INFO  L85    oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2024-11-02 22:27:59,046 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 30 states
[2024-11-02 22:27:59,046 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2024-11-02 22:27:59,047 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants.
[2024-11-02 22:27:59,047 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=226, Invalid=644, Unknown=0, NotChecked=0, Total=870
[2024-11-02 22:27:59,048 INFO  L87              Difference]: Start difference. First operand 92 states and 135 transitions. Second operand  has 30 states, 29 states have (on average 2.8275862068965516) internal successors, (82), 27 states have internal predecessors, (82), 9 states have call successors, (36), 6 states have call predecessors, (36), 10 states have return successors, (36), 9 states have call predecessors, (36), 9 states have call successors, (36)
[2024-11-02 22:28:01,942 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-02 22:28:01,942 INFO  L93              Difference]: Finished difference Result 341 states and 461 transitions.
[2024-11-02 22:28:01,942 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. 
[2024-11-02 22:28:01,943 INFO  L78                 Accepts]: Start accepts. Automaton has  has 30 states, 29 states have (on average 2.8275862068965516) internal successors, (82), 27 states have internal predecessors, (82), 9 states have call successors, (36), 6 states have call predecessors, (36), 10 states have return successors, (36), 9 states have call predecessors, (36), 9 states have call successors, (36) Word has length 120
[2024-11-02 22:28:01,943 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-02 22:28:01,949 INFO  L225             Difference]: With dead ends: 341
[2024-11-02 22:28:01,950 INFO  L226             Difference]: Without dead ends: 287
[2024-11-02 22:28:01,954 INFO  L431           NwaCegarLoop]: 0 DeclaredPredicates, 277 GetRequests, 215 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1132 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=1092, Invalid=2940, Unknown=0, NotChecked=0, Total=4032
[2024-11-02 22:28:01,956 INFO  L432           NwaCegarLoop]: 74 mSDtfsCounter, 407 mSDsluCounter, 615 mSDsCounter, 0 mSdLazyCounter, 1008 mSolverCounterSat, 240 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 408 SdHoareTripleChecker+Valid, 689 SdHoareTripleChecker+Invalid, 1248 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 240 IncrementalHoareTripleChecker+Valid, 1008 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time
[2024-11-02 22:28:01,957 INFO  L433           NwaCegarLoop]: SdHoareTripleChecker [408 Valid, 689 Invalid, 1248 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [240 Valid, 1008 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time]
[2024-11-02 22:28:01,958 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 287 states.
[2024-11-02 22:28:02,006 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 246.
[2024-11-02 22:28:02,007 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 246 states, 160 states have (on average 1.18125) internal successors, (189), 162 states have internal predecessors, (189), 70 states have call successors, (70), 15 states have call predecessors, (70), 15 states have return successors, (70), 68 states have call predecessors, (70), 70 states have call successors, (70)
[2024-11-02 22:28:02,012 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 246 states to 246 states and 329 transitions.
[2024-11-02 22:28:02,012 INFO  L78                 Accepts]: Start accepts. Automaton has 246 states and 329 transitions. Word has length 120
[2024-11-02 22:28:02,013 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-02 22:28:02,013 INFO  L471      AbstractCegarLoop]: Abstraction has 246 states and 329 transitions.
[2024-11-02 22:28:02,013 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 30 states, 29 states have (on average 2.8275862068965516) internal successors, (82), 27 states have internal predecessors, (82), 9 states have call successors, (36), 6 states have call predecessors, (36), 10 states have return successors, (36), 9 states have call predecessors, (36), 9 states have call successors, (36)
[2024-11-02 22:28:02,014 INFO  L276                IsEmpty]: Start isEmpty. Operand 246 states and 329 transitions.
[2024-11-02 22:28:02,018 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 121
[2024-11-02 22:28:02,018 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-02 22:28:02,018 INFO  L215           NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:28:02,041 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 22:28:02,219 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 22:28:02,220 INFO  L396      AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-02 22:28:02,220 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-02 22:28:02,220 INFO  L85        PathProgramCache]: Analyzing trace with hash 1767240105, now seen corresponding path program 1 times
[2024-11-02 22:28:02,221 INFO  L118   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2024-11-02 22:28:02,221 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1998010055]
[2024-11-02 22:28:02,221 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-02 22:28:02,221 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-02 22:28:02,221 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2024-11-02 22:28:02,225 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 22:28:02,226 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 22:28:02,360 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-02 22:28:02,376 INFO  L255         TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 28 conjuncts are in the unsatisfiable core
[2024-11-02 22:28:02,384 INFO  L278         TraceCheckSpWp]: Computing forward predicates...