/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 bitwuzla -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf -i ../../../trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount250_file-43.i


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


This is Ultimate 0.2.5-dev-b75d321-m
[2024-11-03 12:50:45,286 INFO  L188        SettingsManager]: Resetting all preferences to default values...
[2024-11-03 12:50:45,349 INFO  L114        SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf
[2024-11-03 12:50:45,355 WARN  L101        SettingsManager]: Preference file contains the following unknown settings:
[2024-11-03 12:50:45,355 WARN  L103        SettingsManager]:   * de.uni_freiburg.informatik.ultimate.core.Log level for class
[2024-11-03 12:50:45,374 INFO  L130        SettingsManager]: Preferences different from defaults after loading the file:
[2024-11-03 12:50:45,375 INFO  L151        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2024-11-03 12:50:45,375 INFO  L153        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2024-11-03 12:50:45,376 INFO  L151        SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults:
[2024-11-03 12:50:45,377 INFO  L153        SettingsManager]:  * Use memory slicer=true
[2024-11-03 12:50:45,377 INFO  L151        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2024-11-03 12:50:45,377 INFO  L153        SettingsManager]:  * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2024-11-03 12:50:45,378 INFO  L151        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2024-11-03 12:50:45,378 INFO  L153        SettingsManager]:  * Create parallel compositions if possible=false
[2024-11-03 12:50:45,378 INFO  L153        SettingsManager]:  * Use SBE=true
[2024-11-03 12:50:45,378 INFO  L151        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2024-11-03 12:50:45,379 INFO  L153        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2024-11-03 12:50:45,379 INFO  L153        SettingsManager]:  * sizeof long=4
[2024-11-03 12:50:45,381 INFO  L153        SettingsManager]:  * sizeof POINTER=4
[2024-11-03 12:50:45,381 INFO  L153        SettingsManager]:  * Check division by zero=IGNORE
[2024-11-03 12:50:45,381 INFO  L153        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2024-11-03 12:50:45,382 INFO  L153        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2024-11-03 12:50:45,383 INFO  L153        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2024-11-03 12:50:45,383 INFO  L153        SettingsManager]:  * Adapt memory model on pointer casts if necessary=true
[2024-11-03 12:50:45,383 INFO  L153        SettingsManager]:  * Use bitvectors instead of ints=true
[2024-11-03 12:50:45,383 INFO  L153        SettingsManager]:  * Allow undefined functions=false
[2024-11-03 12:50:45,383 INFO  L153        SettingsManager]:  * Memory model=HoenickeLindenmann_4ByteResolution
[2024-11-03 12:50:45,383 INFO  L153        SettingsManager]:  * sizeof long double=12
[2024-11-03 12:50:45,384 INFO  L153        SettingsManager]:  * Check if freed pointer was valid=false
[2024-11-03 12:50:45,384 INFO  L153        SettingsManager]:  * Use constant arrays=true
[2024-11-03 12:50:45,384 INFO  L151        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2024-11-03 12:50:45,384 INFO  L153        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2024-11-03 12:50:45,384 INFO  L153        SettingsManager]:  * Only consider context switches at boundaries of atomic blocks=true
[2024-11-03 12:50:45,384 INFO  L153        SettingsManager]:  * SMT solver=External_DefaultMode
[2024-11-03 12:50:45,385 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2024-11-03 12:50:45,385 INFO  L151        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2024-11-03 12:50:45,385 INFO  L153        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2024-11-03 12:50:45,385 INFO  L153        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopHeads
[2024-11-03 12:50:45,385 INFO  L153        SettingsManager]:  * Trace refinement strategy=WOLF
[2024-11-03 12:50:45,386 INFO  L153        SettingsManager]:  * Command for external solver=cvc4 --incremental --print-success --lang smt
[2024-11-03 12:50:45,386 INFO  L153        SettingsManager]:  * Apply one-shot large block encoding in concurrent analysis=false
[2024-11-03 12:50:45,386 INFO  L153        SettingsManager]:  * Automaton type used in concurrency analysis=PETRI_NET
[2024-11-03 12:50:45,387 INFO  L153        SettingsManager]:  * Order on configurations for Petri net unfoldings=DBO
[2024-11-03 12:50:45,387 INFO  L153        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2024-11-03 12:50:45,387 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$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Allow undefined functions -> true
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> External_ModelsAndUnsatCoreMode
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Command for external solver -> bitwuzla
[2024-11-03 12:50:45,573 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2024-11-03 12:50:45,589 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2024-11-03 12:50:45,591 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2024-11-03 12:50:45,592 INFO  L270        PluginConnector]: Initializing CDTParser...
[2024-11-03 12:50:45,593 INFO  L274        PluginConnector]: CDTParser initialized
[2024-11-03 12:50:45,594 INFO  L431   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount250_file-43.i
[2024-11-03 12:50:46,874 INFO  L533              CDTParser]: Created temporary CDT project at NULL
[2024-11-03 12:50:47,069 INFO  L384              CDTParser]: Found 1 translation units.
[2024-11-03 12:50:47,070 INFO  L180              CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount250_file-43.i
[2024-11-03 12:50:47,083 INFO  L427              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ac2016851/c7bc85b447bf4718a502684ce43e9cf7/FLAG4a3754379
[2024-11-03 12:50:47,441 INFO  L435              CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ac2016851/c7bc85b447bf4718a502684ce43e9cf7
[2024-11-03 12:50:47,444 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2024-11-03 12:50:47,446 INFO  L133        ToolchainWalker]: Walking toolchain with 5 elements.
[2024-11-03 12:50:47,452 INFO  L112        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2024-11-03 12:50:47,452 INFO  L270        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2024-11-03 12:50:47,456 INFO  L274        PluginConnector]: CACSL2BoogieTranslator initialized
[2024-11-03 12:50:47,457 INFO  L184        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 12:50:47" (1/1) ...
[2024-11-03 12:50:47,458 INFO  L204        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2397ab52 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:50:47, skipping insertion in model container
[2024-11-03 12:50:47,458 INFO  L184        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 12:50:47" (1/1) ...
[2024-11-03 12:50:47,497 INFO  L175         MainTranslator]: Built tables and reachable declarations
[2024-11-03 12:50:47,649 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_amount250_file-43.i[916,929]
[2024-11-03 12:50:47,826 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2024-11-03 12:50:47,844 INFO  L200         MainTranslator]: Completed pre-run
[2024-11-03 12:50:47,855 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_amount250_file-43.i[916,929]
[2024-11-03 12:50:47,900 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2024-11-03 12:50:47,917 INFO  L204         MainTranslator]: Completed translation
[2024-11-03 12:50:47,918 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:50:47 WrapperNode
[2024-11-03 12:50:47,918 INFO  L131        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2024-11-03 12:50:47,919 INFO  L112        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2024-11-03 12:50:47,919 INFO  L270        PluginConnector]: Initializing Boogie Procedure Inliner...
[2024-11-03 12:50:47,919 INFO  L274        PluginConnector]: Boogie Procedure Inliner initialized
[2024-11-03 12:50:47,925 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:50:47" (1/1) ...
[2024-11-03 12:50:47,947 INFO  L184        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:50:47" (1/1) ...
[2024-11-03 12:50:47,978 INFO  L138                Inliner]: procedures = 27, calls = 76, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 384
[2024-11-03 12:50:47,979 INFO  L131        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2024-11-03 12:50:47,979 INFO  L112        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2024-11-03 12:50:47,979 INFO  L270        PluginConnector]: Initializing Boogie Preprocessor...
[2024-11-03 12:50:47,979 INFO  L274        PluginConnector]: Boogie Preprocessor initialized
[2024-11-03 12:50:47,989 INFO  L184        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:50:47" (1/1) ...
[2024-11-03 12:50:47,989 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:50:47" (1/1) ...
[2024-11-03 12:50:47,994 INFO  L184        PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:50:47" (1/1) ...
[2024-11-03 12:50:48,033 INFO  L175           MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0].
[2024-11-03 12:50:48,034 INFO  L184        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:50:47" (1/1) ...
[2024-11-03 12:50:48,034 INFO  L184        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:50:47" (1/1) ...
[2024-11-03 12:50:48,058 INFO  L184        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:50:47" (1/1) ...
[2024-11-03 12:50:48,064 INFO  L184        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:50:47" (1/1) ...
[2024-11-03 12:50:48,070 INFO  L184        PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:50:47" (1/1) ...
[2024-11-03 12:50:48,072 INFO  L184        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:50:47" (1/1) ...
[2024-11-03 12:50:48,082 INFO  L131        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2024-11-03 12:50:48,082 INFO  L112        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2024-11-03 12:50:48,082 INFO  L270        PluginConnector]: Initializing RCFGBuilder...
[2024-11-03 12:50:48,082 INFO  L274        PluginConnector]: RCFGBuilder initialized
[2024-11-03 12:50:48,083 INFO  L184        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:50:47" (1/1) ...
[2024-11-03 12:50:48,089 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2024-11-03 12:50:48,098 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2024-11-03 12:50:48,109 INFO  L229       MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null)
[2024-11-03 12:50:48,119 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process
[2024-11-03 12:50:48,136 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2024-11-03 12:50:48,136 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0
[2024-11-03 12:50:48,137 INFO  L130     BoogieDeclarations]: Found specification of procedure assume_abort_if_not
[2024-11-03 12:50:48,137 INFO  L138     BoogieDeclarations]: Found implementation of procedure assume_abort_if_not
[2024-11-03 12:50:48,137 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2024-11-03 12:50:48,137 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2024-11-03 12:50:48,238 INFO  L238             CfgBuilder]: Building ICFG
[2024-11-03 12:50:48,239 INFO  L264             CfgBuilder]: Building CFG for each procedure with an implementation
[2024-11-03 12:51:07,350 INFO  L?                        ?]: Removed 41 outVars from TransFormulas that were not future-live.
[2024-11-03 12:51:07,350 INFO  L287             CfgBuilder]: Performing block encoding
[2024-11-03 12:51:07,360 INFO  L311             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2024-11-03 12:51:07,360 INFO  L316             CfgBuilder]: Removed 1 assume(true) statements.
[2024-11-03 12:51:07,360 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 12:51:07 BoogieIcfgContainer
[2024-11-03 12:51:07,361 INFO  L131        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2024-11-03 12:51:07,362 INFO  L112        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2024-11-03 12:51:07,363 INFO  L270        PluginConnector]: Initializing TraceAbstraction...
[2024-11-03 12:51:07,366 INFO  L274        PluginConnector]: TraceAbstraction initialized
[2024-11-03 12:51:07,366 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 12:50:47" (1/3) ...
[2024-11-03 12:51:07,367 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@185bb4cf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 12:51:07, skipping insertion in model container
[2024-11-03 12:51:07,367 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:50:47" (2/3) ...
[2024-11-03 12:51:07,367 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@185bb4cf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 12:51:07, skipping insertion in model container
[2024-11-03 12:51:07,367 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 12:51:07" (3/3) ...
[2024-11-03 12:51:07,368 INFO  L112   eAbstractionObserver]: Analyzing ICFG hardness_operatoramount_amount250_file-43.i
[2024-11-03 12:51:07,378 INFO  L214   ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2024-11-03 12:51:07,378 INFO  L154   ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2024-11-03 12:51:07,422 INFO  L332      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2024-11-03 12:51:07,427 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;@2681e848, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2024-11-03 12:51:07,427 INFO  L334      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2024-11-03 12:51:07,432 INFO  L276                IsEmpty]: Start isEmpty. Operand  has 172 states, 106 states have (on average 1.4339622641509433) internal successors, (152), 107 states have internal predecessors, (152), 63 states have call successors, (63), 1 states have call predecessors, (63), 1 states have return successors, (63), 63 states have call predecessors, (63), 63 states have call successors, (63)
[2024-11-03 12:51:07,452 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 401
[2024-11-03 12:51:07,453 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-03 12:51:07,453 INFO  L215           NwaCegarLoop]: trace histogram [63, 63, 63, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-03 12:51:07,454 INFO  L396      AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-03 12:51:07,458 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-03 12:51:07,458 INFO  L85        PathProgramCache]: Analyzing trace with hash 221344896, now seen corresponding path program 1 times
[2024-11-03 12:51:07,464 INFO  L118   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2024-11-03 12:51:07,464 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1476180787]
[2024-11-03 12:51:07,464 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-03 12:51:07,466 INFO  L173          SolverBuilder]: Constructing external solver with command: bitwuzla
[2024-11-03 12:51:07,466 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla
[2024-11-03 12:51:07,468 INFO  L229       MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null)
[2024-11-03 12:51:07,468 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (2)] Waiting until timeout for monitored process
[2024-11-03 12:51:07,681 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-03 12:51:07,684 INFO  L255         TraceCheckSpWp]: Trace formula consists of 645 conjuncts, 1 conjuncts are in the unsatisfiable core
[2024-11-03 12:51:07,700 INFO  L278         TraceCheckSpWp]: Computing forward predicates...
[2024-11-03 12:51:07,760 INFO  L134       CoverageAnalysis]: Checked inductivity of 7812 backedges. 124 proven. 0 refuted. 0 times theorem prover too weak. 7688 trivial. 0 not checked.
[2024-11-03 12:51:07,760 INFO  L311         TraceCheckSpWp]: Computing backward predicates...
[2024-11-03 12:51:10,331 INFO  L134       CoverageAnalysis]: Checked inductivity of 7812 backedges. 124 proven. 0 refuted. 0 times theorem prover too weak. 7688 trivial. 0 not checked.
[2024-11-03 12:51:10,332 INFO  L136   FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2024-11-03 12:51:10,332 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1476180787]
[2024-11-03 12:51:10,333 INFO  L158   FreeRefinementEngine]: IpTcStrategyModulePreferences [1476180787] provided 2 perfect and 0 imperfect interpolant sequences
[2024-11-03 12:51:10,333 INFO  L185   FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences.
[2024-11-03 12:51:10,333 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2
[2024-11-03 12:51:10,334 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1668538170]
[2024-11-03 12:51:10,335 INFO  L85    oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton
[2024-11-03 12:51:10,339 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 2 states
[2024-11-03 12:51:10,339 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2024-11-03 12:51:10,364 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants.
[2024-11-03 12:51:10,365 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2024-11-03 12:51:10,367 INFO  L87              Difference]: Start difference. First operand  has 172 states, 106 states have (on average 1.4339622641509433) internal successors, (152), 107 states have internal predecessors, (152), 63 states have call successors, (63), 1 states have call predecessors, (63), 1 states have return successors, (63), 63 states have call predecessors, (63), 63 states have call successors, (63) Second operand  has 2 states, 2 states have (on average 45.0) internal successors, (90), 2 states have internal predecessors, (90), 1 states have call successors, (63), 1 states have call predecessors, (63), 2 states have return successors, (63), 2 states have call predecessors, (63), 1 states have call successors, (63)
[2024-11-03 12:51:10,414 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-03 12:51:10,414 INFO  L93              Difference]: Finished difference Result 337 states and 613 transitions.
[2024-11-03 12:51:10,415 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. 
[2024-11-03 12:51:10,416 INFO  L78                 Accepts]: Start accepts. Automaton has  has 2 states, 2 states have (on average 45.0) internal successors, (90), 2 states have internal predecessors, (90), 1 states have call successors, (63), 1 states have call predecessors, (63), 2 states have return successors, (63), 2 states have call predecessors, (63), 1 states have call successors, (63) Word has length 400
[2024-11-03 12:51:10,417 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-03 12:51:10,423 INFO  L225             Difference]: With dead ends: 337
[2024-11-03 12:51:10,423 INFO  L226             Difference]: Without dead ends: 168
[2024-11-03 12:51:10,428 INFO  L431           NwaCegarLoop]: 0 DeclaredPredicates, 798 GetRequests, 798 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2024-11-03 12:51:10,430 INFO  L432           NwaCegarLoop]: 270 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, 270 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2024-11-03 12:51:10,431 INFO  L433           NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 270 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2024-11-03 12:51:10,444 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 168 states.
[2024-11-03 12:51:10,475 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 168.
[2024-11-03 12:51:10,478 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 168 states, 103 states have (on average 1.3980582524271845) internal successors, (144), 103 states have internal predecessors, (144), 63 states have call successors, (63), 1 states have call predecessors, (63), 1 states have return successors, (63), 63 states have call predecessors, (63), 63 states have call successors, (63)
[2024-11-03 12:51:10,480 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 270 transitions.
[2024-11-03 12:51:10,485 INFO  L78                 Accepts]: Start accepts. Automaton has 168 states and 270 transitions. Word has length 400
[2024-11-03 12:51:10,486 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-03 12:51:10,486 INFO  L471      AbstractCegarLoop]: Abstraction has 168 states and 270 transitions.
[2024-11-03 12:51:10,486 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 2 states, 2 states have (on average 45.0) internal successors, (90), 2 states have internal predecessors, (90), 1 states have call successors, (63), 1 states have call predecessors, (63), 2 states have return successors, (63), 2 states have call predecessors, (63), 1 states have call successors, (63)
[2024-11-03 12:51:10,486 INFO  L276                IsEmpty]: Start isEmpty. Operand 168 states and 270 transitions.
[2024-11-03 12:51:10,494 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 401
[2024-11-03 12:51:10,494 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-03 12:51:10,494 INFO  L215           NwaCegarLoop]: trace histogram [63, 63, 63, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-03 12:51:10,501 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (2)] Ended with exit code 0
[2024-11-03 12:51:10,697 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla
[2024-11-03 12:51:10,697 INFO  L396      AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-03 12:51:10,698 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-03 12:51:10,698 INFO  L85        PathProgramCache]: Analyzing trace with hash 1643426678, now seen corresponding path program 1 times
[2024-11-03 12:51:10,698 INFO  L118   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2024-11-03 12:51:10,699 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [984893621]
[2024-11-03 12:51:10,699 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-03 12:51:10,699 INFO  L173          SolverBuilder]: Constructing external solver with command: bitwuzla
[2024-11-03 12:51:10,699 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla
[2024-11-03 12:51:10,701 INFO  L229       MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null)
[2024-11-03 12:51:10,701 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (3)] Waiting until timeout for monitored process
[2024-11-03 12:51:10,829 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-03 12:51:10,831 INFO  L255         TraceCheckSpWp]: Trace formula consists of 645 conjuncts, 3 conjuncts are in the unsatisfiable core
[2024-11-03 12:51:10,838 INFO  L278         TraceCheckSpWp]: Computing forward predicates...
[2024-11-03 12:51:18,075 INFO  L134       CoverageAnalysis]: Checked inductivity of 7812 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7812 trivial. 0 not checked.
[2024-11-03 12:51:18,076 INFO  L311         TraceCheckSpWp]: Computing backward predicates...
[2024-11-03 12:51:22,640 INFO  L134       CoverageAnalysis]: Checked inductivity of 7812 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7812 trivial. 0 not checked.
[2024-11-03 12:51:22,640 INFO  L136   FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2024-11-03 12:51:22,640 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [984893621]
[2024-11-03 12:51:22,640 INFO  L158   FreeRefinementEngine]: IpTcStrategyModulePreferences [984893621] provided 2 perfect and 0 imperfect interpolant sequences
[2024-11-03 12:51:22,640 INFO  L185   FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences.
[2024-11-03 12:51:22,641 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 4] imperfect sequences [] total 4
[2024-11-03 12:51:22,641 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [698401301]
[2024-11-03 12:51:22,641 INFO  L85    oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton
[2024-11-03 12:51:22,642 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2024-11-03 12:51:22,642 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2024-11-03 12:51:22,643 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2024-11-03 12:51:22,643 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2024-11-03 12:51:22,644 INFO  L87              Difference]: Start difference. First operand 168 states and 270 transitions. Second operand  has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 1 states have call successors, (126), 2 states have call predecessors, (126), 2 states have return successors, (126), 1 states have call predecessors, (126), 1 states have call successors, (126)
[2024-11-03 12:51:27,298 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.26s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers []
[2024-11-03 12:51:31,756 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.26s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers []
[2024-11-03 12:51:35,761 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers []
[2024-11-03 12:51:40,258 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.29s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers []
[2024-11-03 12:51:44,265 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers []
[2024-11-03 12:51:44,266 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-03 12:51:44,266 INFO  L93              Difference]: Finished difference Result 554 states and 895 transitions.
[2024-11-03 12:51:44,401 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2024-11-03 12:51:44,402 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 1 states have call successors, (126), 2 states have call predecessors, (126), 2 states have return successors, (126), 1 states have call predecessors, (126), 1 states have call successors, (126) Word has length 400
[2024-11-03 12:51:44,403 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-03 12:51:44,410 INFO  L225             Difference]: With dead ends: 554
[2024-11-03 12:51:44,410 INFO  L226             Difference]: Without dead ends: 389
[2024-11-03 12:51:44,411 INFO  L431           NwaCegarLoop]: 0 DeclaredPredicates, 800 GetRequests, 797 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2024-11-03 12:51:44,418 INFO  L432           NwaCegarLoop]: 266 mSDtfsCounter, 329 mSDsluCounter, 525 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 127 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 21.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 329 SdHoareTripleChecker+Valid, 791 SdHoareTripleChecker+Invalid, 143 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 127 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 21.5s IncrementalHoareTripleChecker+Time
[2024-11-03 12:51:44,419 INFO  L433           NwaCegarLoop]: SdHoareTripleChecker [329 Valid, 791 Invalid, 143 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [127 Valid, 11 Invalid, 5 Unknown, 0 Unchecked, 21.5s Time]
[2024-11-03 12:51:44,420 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 389 states.
[2024-11-03 12:51:44,508 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 389 to 331.
[2024-11-03 12:51:44,511 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 331 states, 202 states have (on average 1.400990099009901) internal successors, (283), 202 states have internal predecessors, (283), 126 states have call successors, (126), 2 states have call predecessors, (126), 2 states have return successors, (126), 126 states have call predecessors, (126), 126 states have call successors, (126)
[2024-11-03 12:51:44,513 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 331 states to 331 states and 535 transitions.
[2024-11-03 12:51:44,520 INFO  L78                 Accepts]: Start accepts. Automaton has 331 states and 535 transitions. Word has length 400
[2024-11-03 12:51:44,521 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-03 12:51:44,521 INFO  L471      AbstractCegarLoop]: Abstraction has 331 states and 535 transitions.
[2024-11-03 12:51:44,521 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 1 states have call successors, (126), 2 states have call predecessors, (126), 2 states have return successors, (126), 1 states have call predecessors, (126), 1 states have call successors, (126)
[2024-11-03 12:51:44,522 INFO  L276                IsEmpty]: Start isEmpty. Operand 331 states and 535 transitions.
[2024-11-03 12:51:44,530 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 401
[2024-11-03 12:51:44,531 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-03 12:51:44,531 INFO  L215           NwaCegarLoop]: trace histogram [63, 63, 63, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-03 12:51:44,536 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (3)] Ended with exit code 0
[2024-11-03 12:51:44,731 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla
[2024-11-03 12:51:44,732 INFO  L396      AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-03 12:51:44,732 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-03 12:51:44,733 INFO  L85        PathProgramCache]: Analyzing trace with hash 746033400, now seen corresponding path program 1 times
[2024-11-03 12:51:44,733 INFO  L118   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2024-11-03 12:51:44,733 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1375355331]
[2024-11-03 12:51:44,733 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-03 12:51:44,733 INFO  L173          SolverBuilder]: Constructing external solver with command: bitwuzla
[2024-11-03 12:51:44,733 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla
[2024-11-03 12:51:44,735 INFO  L229       MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null)
[2024-11-03 12:51:44,737 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (4)] Waiting until timeout for monitored process
[2024-11-03 12:51:44,918 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-03 12:51:44,922 INFO  L255         TraceCheckSpWp]: Trace formula consists of 644 conjuncts, 4 conjuncts are in the unsatisfiable core
[2024-11-03 12:51:44,927 INFO  L278         TraceCheckSpWp]: Computing forward predicates...
[2024-11-03 12:51:53,388 INFO  L134       CoverageAnalysis]: Checked inductivity of 7812 backedges. 1988 proven. 159 refuted. 0 times theorem prover too weak. 5665 trivial. 0 not checked.
[2024-11-03 12:51:53,389 INFO  L311         TraceCheckSpWp]: Computing backward predicates...
[2024-11-03 12:51:59,815 INFO  L134       CoverageAnalysis]: Checked inductivity of 7812 backedges. 27 proven. 159 refuted. 0 times theorem prover too weak. 7626 trivial. 0 not checked.
[2024-11-03 12:51:59,815 INFO  L136   FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2024-11-03 12:51:59,816 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1375355331]
[2024-11-03 12:51:59,816 INFO  L158   FreeRefinementEngine]: IpTcStrategyModulePreferences [1375355331] provided 0 perfect and 2 imperfect interpolant sequences
[2024-11-03 12:51:59,816 INFO  L185   FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2024-11-03 12:51:59,816 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7
[2024-11-03 12:51:59,816 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1122209351]
[2024-11-03 12:51:59,816 INFO  L85    oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2024-11-03 12:51:59,817 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2024-11-03 12:51:59,817 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2024-11-03 12:51:59,818 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2024-11-03 12:51:59,818 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42
[2024-11-03 12:51:59,818 INFO  L87              Difference]: Start difference. First operand 331 states and 535 transitions. Second operand  has 7 states, 7 states have (on average 13.857142857142858) internal successors, (97), 7 states have internal predecessors, (97), 2 states have call successors, (116), 2 states have call predecessors, (116), 4 states have return successors, (117), 2 states have call predecessors, (117), 2 states have call successors, (117)
[2024-11-03 12:52:09,315 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.29s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers []
[2024-11-03 12:52:13,326 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers []
[2024-11-03 12:52:17,334 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers []
[2024-11-03 12:52:17,342 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-03 12:52:17,342 INFO  L93              Difference]: Finished difference Result 675 states and 1081 transitions.
[2024-11-03 12:52:17,470 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. 
[2024-11-03 12:52:17,471 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 13.857142857142858) internal successors, (97), 7 states have internal predecessors, (97), 2 states have call successors, (116), 2 states have call predecessors, (116), 4 states have return successors, (117), 2 states have call predecessors, (117), 2 states have call successors, (117) Word has length 400
[2024-11-03 12:52:17,472 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-03 12:52:17,475 INFO  L225             Difference]: With dead ends: 675
[2024-11-03 12:52:17,475 INFO  L226             Difference]: Without dead ends: 347
[2024-11-03 12:52:17,476 INFO  L431           NwaCegarLoop]: 0 DeclaredPredicates, 802 GetRequests, 792 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110
[2024-11-03 12:52:17,477 INFO  L432           NwaCegarLoop]: 198 mSDtfsCounter, 105 mSDsluCounter, 269 mSDsCounter, 0 mSdLazyCounter, 326 mSolverCounterSat, 16 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 113 SdHoareTripleChecker+Valid, 467 SdHoareTripleChecker+Invalid, 345 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 326 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.0s IncrementalHoareTripleChecker+Time
[2024-11-03 12:52:17,478 INFO  L433           NwaCegarLoop]: SdHoareTripleChecker [113 Valid, 467 Invalid, 345 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 326 Invalid, 3 Unknown, 0 Unchecked, 17.0s Time]
[2024-11-03 12:52:17,479 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 347 states.
[2024-11-03 12:52:17,523 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 347 to 339.
[2024-11-03 12:52:17,524 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 339 states, 208 states have (on average 1.3701923076923077) internal successors, (285), 208 states have internal predecessors, (285), 126 states have call successors, (126), 4 states have call predecessors, (126), 4 states have return successors, (126), 126 states have call predecessors, (126), 126 states have call successors, (126)
[2024-11-03 12:52:17,526 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 339 states to 339 states and 537 transitions.
[2024-11-03 12:52:17,526 INFO  L78                 Accepts]: Start accepts. Automaton has 339 states and 537 transitions. Word has length 400
[2024-11-03 12:52:17,527 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-03 12:52:17,527 INFO  L471      AbstractCegarLoop]: Abstraction has 339 states and 537 transitions.
[2024-11-03 12:52:17,527 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 13.857142857142858) internal successors, (97), 7 states have internal predecessors, (97), 2 states have call successors, (116), 2 states have call predecessors, (116), 4 states have return successors, (117), 2 states have call predecessors, (117), 2 states have call successors, (117)
[2024-11-03 12:52:17,528 INFO  L276                IsEmpty]: Start isEmpty. Operand 339 states and 537 transitions.
[2024-11-03 12:52:17,529 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 401
[2024-11-03 12:52:17,529 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-03 12:52:17,530 INFO  L215           NwaCegarLoop]: trace histogram [63, 63, 63, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-03 12:52:17,550 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (4)] Ended with exit code 0
[2024-11-03 12:52:17,733 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla
[2024-11-03 12:52:17,734 INFO  L396      AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-03 12:52:17,735 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-03 12:52:17,735 INFO  L85        PathProgramCache]: Analyzing trace with hash 673646842, now seen corresponding path program 1 times
[2024-11-03 12:52:17,735 INFO  L118   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2024-11-03 12:52:17,735 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1858667101]
[2024-11-03 12:52:17,735 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-03 12:52:17,736 INFO  L173          SolverBuilder]: Constructing external solver with command: bitwuzla
[2024-11-03 12:52:17,736 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla
[2024-11-03 12:52:17,737 INFO  L229       MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null)
[2024-11-03 12:52:17,738 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (5)] Waiting until timeout for monitored process
[2024-11-03 12:52:17,929 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-03 12:52:17,933 INFO  L255         TraceCheckSpWp]: Trace formula consists of 643 conjuncts, 7 conjuncts are in the unsatisfiable core
[2024-11-03 12:52:17,976 INFO  L278         TraceCheckSpWp]: Computing forward predicates...
[2024-11-03 12:52:28,739 INFO  L134       CoverageAnalysis]: Checked inductivity of 7812 backedges. 5013 proven. 168 refuted. 0 times theorem prover too weak. 2631 trivial. 0 not checked.
[2024-11-03 12:52:28,739 INFO  L311         TraceCheckSpWp]: Computing backward predicates...