/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-0.i


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


This is Ultimate 0.2.5-dev-b75d321-m
[2024-11-03 12:45:42,433 INFO  L188        SettingsManager]: Resetting all preferences to default values...
[2024-11-03 12:45:42,493 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 12:45:42,499 WARN  L101        SettingsManager]: Preference file contains the following unknown settings:
[2024-11-03 12:45:42,500 WARN  L103        SettingsManager]:   * de.uni_freiburg.informatik.ultimate.core.Log level for class
[2024-11-03 12:45:42,518 INFO  L130        SettingsManager]: Preferences different from defaults after loading the file:
[2024-11-03 12:45:42,519 INFO  L151        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2024-11-03 12:45:42,519 INFO  L153        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2024-11-03 12:45:42,519 INFO  L151        SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults:
[2024-11-03 12:45:42,522 INFO  L153        SettingsManager]:  * Use memory slicer=true
[2024-11-03 12:45:42,522 INFO  L151        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2024-11-03 12:45:42,522 INFO  L153        SettingsManager]:  * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2024-11-03 12:45:42,522 INFO  L151        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2024-11-03 12:45:42,523 INFO  L153        SettingsManager]:  * Create parallel compositions if possible=false
[2024-11-03 12:45:42,523 INFO  L153        SettingsManager]:  * Use SBE=true
[2024-11-03 12:45:42,523 INFO  L151        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2024-11-03 12:45:42,523 INFO  L153        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2024-11-03 12:45:42,523 INFO  L153        SettingsManager]:  * sizeof long=4
[2024-11-03 12:45:42,523 INFO  L153        SettingsManager]:  * sizeof POINTER=4
[2024-11-03 12:45:42,523 INFO  L153        SettingsManager]:  * Check division by zero=IGNORE
[2024-11-03 12:45:42,524 INFO  L153        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2024-11-03 12:45:42,525 INFO  L153        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2024-11-03 12:45:42,525 INFO  L153        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2024-11-03 12:45:42,525 INFO  L153        SettingsManager]:  * Adapt memory model on pointer casts if necessary=true
[2024-11-03 12:45:42,525 INFO  L153        SettingsManager]:  * Use bitvectors instead of ints=true
[2024-11-03 12:45:42,525 INFO  L153        SettingsManager]:  * Allow undefined functions=false
[2024-11-03 12:45:42,526 INFO  L153        SettingsManager]:  * Memory model=HoenickeLindenmann_4ByteResolution
[2024-11-03 12:45:42,526 INFO  L153        SettingsManager]:  * sizeof long double=12
[2024-11-03 12:45:42,526 INFO  L153        SettingsManager]:  * Check if freed pointer was valid=false
[2024-11-03 12:45:42,526 INFO  L153        SettingsManager]:  * Use constant arrays=true
[2024-11-03 12:45:42,526 INFO  L151        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2024-11-03 12:45:42,527 INFO  L153        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2024-11-03 12:45:42,527 INFO  L153        SettingsManager]:  * Only consider context switches at boundaries of atomic blocks=true
[2024-11-03 12:45:42,527 INFO  L153        SettingsManager]:  * SMT solver=External_DefaultMode
[2024-11-03 12:45:42,527 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2024-11-03 12:45:42,527 INFO  L151        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2024-11-03 12:45:42,527 INFO  L153        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2024-11-03 12:45:42,527 INFO  L153        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopHeads
[2024-11-03 12:45:42,527 INFO  L153        SettingsManager]:  * Trace refinement strategy=WOLF
[2024-11-03 12:45:42,527 INFO  L153        SettingsManager]:  * Command for external solver=cvc4 --incremental --print-success --lang smt
[2024-11-03 12:45:42,528 INFO  L153        SettingsManager]:  * Apply one-shot large block encoding in concurrent analysis=false
[2024-11-03 12:45:42,528 INFO  L153        SettingsManager]:  * Automaton type used in concurrency analysis=PETRI_NET
[2024-11-03 12:45:42,528 INFO  L153        SettingsManager]:  * Order on configurations for Petri net unfoldings=DBO
[2024-11-03 12:45:42,528 INFO  L153        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2024-11-03 12:45:42,529 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$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Allow undefined functions -> true
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> External_ModelsAndUnsatCoreMode
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Command for external solver -> bitwuzla
[2024-11-03 12:45:42,686 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2024-11-03 12:45:42,699 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2024-11-03 12:45:42,701 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2024-11-03 12:45:42,701 INFO  L270        PluginConnector]: Initializing CDTParser...
[2024-11-03 12:45:42,702 INFO  L274        PluginConnector]: CDTParser initialized
[2024-11-03 12:45:42,703 INFO  L431   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount250_file-0.i
[2024-11-03 12:45:43,880 INFO  L533              CDTParser]: Created temporary CDT project at NULL
[2024-11-03 12:45:44,134 INFO  L384              CDTParser]: Found 1 translation units.
[2024-11-03 12:45:44,134 INFO  L180              CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount250_file-0.i
[2024-11-03 12:45:44,151 INFO  L427              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6b3571e51/aea582c4ae6e4d74b157c38908158666/FLAG124f00990
[2024-11-03 12:45:44,485 INFO  L435              CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6b3571e51/aea582c4ae6e4d74b157c38908158666
[2024-11-03 12:45:44,487 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2024-11-03 12:45:44,487 INFO  L133        ToolchainWalker]: Walking toolchain with 5 elements.
[2024-11-03 12:45:44,489 INFO  L112        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2024-11-03 12:45:44,489 INFO  L270        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2024-11-03 12:45:44,492 INFO  L274        PluginConnector]: CACSL2BoogieTranslator initialized
[2024-11-03 12:45:44,493 INFO  L184        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 12:45:44" (1/1) ...
[2024-11-03 12:45:44,493 INFO  L204        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@11d887f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:45:44, skipping insertion in model container
[2024-11-03 12:45:44,494 INFO  L184        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 12:45:44" (1/1) ...
[2024-11-03 12:45:44,528 INFO  L175         MainTranslator]: Built tables and reachable declarations
[2024-11-03 12:45:44,636 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-0.i[915,928]
[2024-11-03 12:45:44,726 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2024-11-03 12:45:44,744 INFO  L200         MainTranslator]: Completed pre-run
[2024-11-03 12:45:44,754 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-0.i[915,928]
[2024-11-03 12:45:44,816 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2024-11-03 12:45:44,857 INFO  L204         MainTranslator]: Completed translation
[2024-11-03 12:45:44,858 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:45:44 WrapperNode
[2024-11-03 12:45:44,858 INFO  L131        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2024-11-03 12:45:44,859 INFO  L112        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2024-11-03 12:45:44,859 INFO  L270        PluginConnector]: Initializing Boogie Procedure Inliner...
[2024-11-03 12:45:44,859 INFO  L274        PluginConnector]: Boogie Procedure Inliner initialized
[2024-11-03 12:45:44,864 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:45:44" (1/1) ...
[2024-11-03 12:45:44,876 INFO  L184        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:45:44" (1/1) ...
[2024-11-03 12:45:44,903 INFO  L138                Inliner]: procedures = 27, calls = 45, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 288
[2024-11-03 12:45:44,903 INFO  L131        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2024-11-03 12:45:44,904 INFO  L112        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2024-11-03 12:45:44,904 INFO  L270        PluginConnector]: Initializing Boogie Preprocessor...
[2024-11-03 12:45:44,904 INFO  L274        PluginConnector]: Boogie Preprocessor initialized
[2024-11-03 12:45:44,912 INFO  L184        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:45:44" (1/1) ...
[2024-11-03 12:45:44,913 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:45:44" (1/1) ...
[2024-11-03 12:45:44,919 INFO  L184        PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:45:44" (1/1) ...
[2024-11-03 12:45:44,943 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 12:45:44,943 INFO  L184        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:45:44" (1/1) ...
[2024-11-03 12:45:44,943 INFO  L184        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:45:44" (1/1) ...
[2024-11-03 12:45:44,958 INFO  L184        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:45:44" (1/1) ...
[2024-11-03 12:45:44,966 INFO  L184        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:45:44" (1/1) ...
[2024-11-03 12:45:44,974 INFO  L184        PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:45:44" (1/1) ...
[2024-11-03 12:45:44,976 INFO  L184        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:45:44" (1/1) ...
[2024-11-03 12:45:44,980 INFO  L131        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2024-11-03 12:45:44,980 INFO  L112        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2024-11-03 12:45:44,980 INFO  L270        PluginConnector]: Initializing RCFGBuilder...
[2024-11-03 12:45:44,981 INFO  L274        PluginConnector]: RCFGBuilder initialized
[2024-11-03 12:45:44,981 INFO  L184        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:45:44" (1/1) ...
[2024-11-03 12:45:44,985 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2024-11-03 12:45:44,992 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2024-11-03 12:45:45,009 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 12:45:45,027 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 12:45:45,045 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2024-11-03 12:45:45,045 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0
[2024-11-03 12:45:45,046 INFO  L130     BoogieDeclarations]: Found specification of procedure assume_abort_if_not
[2024-11-03 12:45:45,046 INFO  L138     BoogieDeclarations]: Found implementation of procedure assume_abort_if_not
[2024-11-03 12:45:45,046 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2024-11-03 12:45:45,046 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2024-11-03 12:45:45,120 INFO  L238             CfgBuilder]: Building ICFG
[2024-11-03 12:45:45,121 INFO  L264             CfgBuilder]: Building CFG for each procedure with an implementation
[2024-11-03 12:46:03,234 INFO  L?                        ?]: Removed 30 outVars from TransFormulas that were not future-live.
[2024-11-03 12:46:03,234 INFO  L287             CfgBuilder]: Performing block encoding
[2024-11-03 12:46:03,248 INFO  L311             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2024-11-03 12:46:03,248 INFO  L316             CfgBuilder]: Removed 1 assume(true) statements.
[2024-11-03 12:46:03,248 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 12:46:03 BoogieIcfgContainer
[2024-11-03 12:46:03,248 INFO  L131        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2024-11-03 12:46:03,250 INFO  L112        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2024-11-03 12:46:03,250 INFO  L270        PluginConnector]: Initializing TraceAbstraction...
[2024-11-03 12:46:03,253 INFO  L274        PluginConnector]: TraceAbstraction initialized
[2024-11-03 12:46:03,253 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 12:45:44" (1/3) ...
[2024-11-03 12:46:03,254 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24b93e58 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 12:46:03, skipping insertion in model container
[2024-11-03 12:46:03,255 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:45:44" (2/3) ...
[2024-11-03 12:46:03,255 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24b93e58 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 12:46:03, skipping insertion in model container
[2024-11-03 12:46:03,255 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 12:46:03" (3/3) ...
[2024-11-03 12:46:03,257 INFO  L112   eAbstractionObserver]: Analyzing ICFG hardness_operatoramount_amount250_file-0.i
[2024-11-03 12:46:03,269 INFO  L214   ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2024-11-03 12:46:03,270 INFO  L154   ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2024-11-03 12:46:03,325 INFO  L332      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2024-11-03 12:46:03,332 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;@9e06614, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2024-11-03 12:46:03,333 INFO  L334      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2024-11-03 12:46:03,338 INFO  L276                IsEmpty]: Start isEmpty. Operand  has 125 states, 90 states have (on average 1.5444444444444445) internal successors, (139), 91 states have internal predecessors, (139), 32 states have call successors, (32), 1 states have call predecessors, (32), 1 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32)
[2024-11-03 12:46:03,351 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 223
[2024-11-03 12:46:03,352 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-03 12:46:03,352 INFO  L215           NwaCegarLoop]: trace histogram [32, 32, 32, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:46:03,353 INFO  L396      AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-03 12:46:03,356 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-03 12:46:03,356 INFO  L85        PathProgramCache]: Analyzing trace with hash -1129801030, now seen corresponding path program 1 times
[2024-11-03 12:46:03,362 INFO  L118   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2024-11-03 12:46:03,362 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1075879394]
[2024-11-03 12:46:03,363 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-03 12:46:03,364 INFO  L173          SolverBuilder]: Constructing external solver with command: bitwuzla
[2024-11-03 12:46:03,364 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla
[2024-11-03 12:46:03,367 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 12:46:03,368 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (2)] Waiting until timeout for monitored process
[2024-11-03 12:46:03,557 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-03 12:46:03,559 INFO  L255         TraceCheckSpWp]: Trace formula consists of 382 conjuncts, 1 conjuncts are in the unsatisfiable core
[2024-11-03 12:46:03,572 INFO  L278         TraceCheckSpWp]: Computing forward predicates...
[2024-11-03 12:46:03,614 INFO  L134       CoverageAnalysis]: Checked inductivity of 1984 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 1922 trivial. 0 not checked.
[2024-11-03 12:46:03,614 INFO  L311         TraceCheckSpWp]: Computing backward predicates...
[2024-11-03 12:46:05,333 INFO  L134       CoverageAnalysis]: Checked inductivity of 1984 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 1922 trivial. 0 not checked.
[2024-11-03 12:46:05,334 INFO  L136   FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2024-11-03 12:46:05,334 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1075879394]
[2024-11-03 12:46:05,335 INFO  L158   FreeRefinementEngine]: IpTcStrategyModulePreferences [1075879394] provided 2 perfect and 0 imperfect interpolant sequences
[2024-11-03 12:46:05,335 INFO  L185   FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences.
[2024-11-03 12:46:05,335 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2
[2024-11-03 12:46:05,336 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [914340728]
[2024-11-03 12:46:05,337 INFO  L85    oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton
[2024-11-03 12:46:05,340 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 2 states
[2024-11-03 12:46:05,340 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2024-11-03 12:46:05,355 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants.
[2024-11-03 12:46:05,356 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2024-11-03 12:46:05,357 INFO  L87              Difference]: Start difference. First operand  has 125 states, 90 states have (on average 1.5444444444444445) internal successors, (139), 91 states have internal predecessors, (139), 32 states have call successors, (32), 1 states have call predecessors, (32), 1 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) Second operand  has 2 states, 2 states have (on average 33.5) internal successors, (67), 2 states have internal predecessors, (67), 1 states have call successors, (32), 1 states have call predecessors, (32), 2 states have return successors, (32), 2 states have call predecessors, (32), 1 states have call successors, (32)
[2024-11-03 12:46:05,380 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-03 12:46:05,380 INFO  L93              Difference]: Finished difference Result 243 states and 432 transitions.
[2024-11-03 12:46:05,381 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. 
[2024-11-03 12:46:05,382 INFO  L78                 Accepts]: Start accepts. Automaton has  has 2 states, 2 states have (on average 33.5) internal successors, (67), 2 states have internal predecessors, (67), 1 states have call successors, (32), 1 states have call predecessors, (32), 2 states have return successors, (32), 2 states have call predecessors, (32), 1 states have call successors, (32) Word has length 222
[2024-11-03 12:46:05,382 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-03 12:46:05,387 INFO  L225             Difference]: With dead ends: 243
[2024-11-03 12:46:05,387 INFO  L226             Difference]: Without dead ends: 121
[2024-11-03 12:46:05,390 INFO  L431           NwaCegarLoop]: 0 DeclaredPredicates, 442 GetRequests, 442 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 12:46:05,391 INFO  L432           NwaCegarLoop]: 196 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, 196 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 12:46:05,392 INFO  L433           NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 196 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2024-11-03 12:46:05,403 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 121 states.
[2024-11-03 12:46:05,421 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 121.
[2024-11-03 12:46:05,422 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 121 states, 87 states have (on average 1.5172413793103448) internal successors, (132), 87 states have internal predecessors, (132), 32 states have call successors, (32), 1 states have call predecessors, (32), 1 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32)
[2024-11-03 12:46:05,424 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 196 transitions.
[2024-11-03 12:46:05,426 INFO  L78                 Accepts]: Start accepts. Automaton has 121 states and 196 transitions. Word has length 222
[2024-11-03 12:46:05,426 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-03 12:46:05,426 INFO  L471      AbstractCegarLoop]: Abstraction has 121 states and 196 transitions.
[2024-11-03 12:46:05,429 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 2 states, 2 states have (on average 33.5) internal successors, (67), 2 states have internal predecessors, (67), 1 states have call successors, (32), 1 states have call predecessors, (32), 2 states have return successors, (32), 2 states have call predecessors, (32), 1 states have call successors, (32)
[2024-11-03 12:46:05,429 INFO  L276                IsEmpty]: Start isEmpty. Operand 121 states and 196 transitions.
[2024-11-03 12:46:05,432 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 223
[2024-11-03 12:46:05,432 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-03 12:46:05,432 INFO  L215           NwaCegarLoop]: trace histogram [32, 32, 32, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:46:05,437 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (2)] Forceful destruction successful, exit code 0
[2024-11-03 12:46:05,634 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla
[2024-11-03 12:46:05,635 INFO  L396      AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-03 12:46:05,636 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-03 12:46:05,636 INFO  L85        PathProgramCache]: Analyzing trace with hash -1581236474, now seen corresponding path program 1 times
[2024-11-03 12:46:05,636 INFO  L118   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2024-11-03 12:46:05,636 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1821257094]
[2024-11-03 12:46:05,636 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-03 12:46:05,636 INFO  L173          SolverBuilder]: Constructing external solver with command: bitwuzla
[2024-11-03 12:46:05,637 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla
[2024-11-03 12:46:05,639 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 12:46:05,639 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (3)] Waiting until timeout for monitored process
[2024-11-03 12:46:05,745 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-03 12:46:05,748 INFO  L255         TraceCheckSpWp]: Trace formula consists of 382 conjuncts, 4 conjuncts are in the unsatisfiable core
[2024-11-03 12:46:05,757 INFO  L278         TraceCheckSpWp]: Computing forward predicates...
[2024-11-03 12:46:09,316 INFO  L134       CoverageAnalysis]: Checked inductivity of 1984 backedges. 783 proven. 69 refuted. 0 times theorem prover too weak. 1132 trivial. 0 not checked.
[2024-11-03 12:46:09,316 INFO  L311         TraceCheckSpWp]: Computing backward predicates...
[2024-11-03 12:46:12,192 INFO  L134       CoverageAnalysis]: Checked inductivity of 1984 backedges. 24 proven. 69 refuted. 0 times theorem prover too weak. 1891 trivial. 0 not checked.
[2024-11-03 12:46:12,193 INFO  L136   FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2024-11-03 12:46:12,193 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1821257094]
[2024-11-03 12:46:12,193 INFO  L158   FreeRefinementEngine]: IpTcStrategyModulePreferences [1821257094] provided 0 perfect and 2 imperfect interpolant sequences
[2024-11-03 12:46:12,193 INFO  L185   FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2024-11-03 12:46:12,193 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7
[2024-11-03 12:46:12,193 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2143597278]
[2024-11-03 12:46:12,193 INFO  L85    oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2024-11-03 12:46:12,196 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2024-11-03 12:46:12,197 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2024-11-03 12:46:12,197 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2024-11-03 12:46:12,198 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42
[2024-11-03 12:46:12,198 INFO  L87              Difference]: Start difference. First operand 121 states and 196 transitions. Second operand  has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 7 states have internal predecessors, (74), 2 states have call successors, (55), 2 states have call predecessors, (55), 4 states have return successors, (56), 2 states have call predecessors, (56), 2 states have call successors, (56)
[2024-11-03 12:46:19,262 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.43s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers []
[2024-11-03 12:46:23,266 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers []
[2024-11-03 12:46:27,273 WARN  L539   Checker$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 12:46:27,276 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-03 12:46:27,276 INFO  L93              Difference]: Finished difference Result 245 states and 394 transitions.
[2024-11-03 12:46:27,405 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. 
[2024-11-03 12:46:27,406 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 7 states have internal predecessors, (74), 2 states have call successors, (55), 2 states have call predecessors, (55), 4 states have return successors, (56), 2 states have call predecessors, (56), 2 states have call successors, (56) Word has length 222
[2024-11-03 12:46:27,406 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-03 12:46:27,408 INFO  L225             Difference]: With dead ends: 245
[2024-11-03 12:46:27,408 INFO  L226             Difference]: Without dead ends: 127
[2024-11-03 12:46:27,409 INFO  L431           NwaCegarLoop]: 0 DeclaredPredicates, 445 GetRequests, 436 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90
[2024-11-03 12:46:27,410 INFO  L432           NwaCegarLoop]: 148 mSDtfsCounter, 225 mSDsluCounter, 228 mSDsCounter, 0 mSdLazyCounter, 191 mSolverCounterSat, 30 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 233 SdHoareTripleChecker+Valid, 376 SdHoareTripleChecker+Invalid, 224 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 191 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.8s IncrementalHoareTripleChecker+Time
[2024-11-03 12:46:27,410 INFO  L433           NwaCegarLoop]: SdHoareTripleChecker [233 Valid, 376 Invalid, 224 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 191 Invalid, 3 Unknown, 0 Unchecked, 14.8s Time]
[2024-11-03 12:46:27,411 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 127 states.
[2024-11-03 12:46:27,421 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 125.
[2024-11-03 12:46:27,421 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 125 states, 90 states have (on average 1.4555555555555555) internal successors, (131), 90 states have internal predecessors, (131), 32 states have call successors, (32), 2 states have call predecessors, (32), 2 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32)
[2024-11-03 12:46:27,422 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 195 transitions.
[2024-11-03 12:46:27,422 INFO  L78                 Accepts]: Start accepts. Automaton has 125 states and 195 transitions. Word has length 222
[2024-11-03 12:46:27,423 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-03 12:46:27,423 INFO  L471      AbstractCegarLoop]: Abstraction has 125 states and 195 transitions.
[2024-11-03 12:46:27,423 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 7 states have internal predecessors, (74), 2 states have call successors, (55), 2 states have call predecessors, (55), 4 states have return successors, (56), 2 states have call predecessors, (56), 2 states have call successors, (56)
[2024-11-03 12:46:27,423 INFO  L276                IsEmpty]: Start isEmpty. Operand 125 states and 195 transitions.
[2024-11-03 12:46:27,426 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 224
[2024-11-03 12:46:27,426 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-03 12:46:27,426 INFO  L215           NwaCegarLoop]: trace histogram [32, 32, 32, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:46:27,429 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (3)] Forceful destruction successful, exit code 0
[2024-11-03 12:46:27,627 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla
[2024-11-03 12:46:27,628 INFO  L396      AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-03 12:46:27,628 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-03 12:46:27,628 INFO  L85        PathProgramCache]: Analyzing trace with hash -442019509, now seen corresponding path program 1 times
[2024-11-03 12:46:27,628 INFO  L118   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2024-11-03 12:46:27,629 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [398933430]
[2024-11-03 12:46:27,629 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-03 12:46:27,629 INFO  L173          SolverBuilder]: Constructing external solver with command: bitwuzla
[2024-11-03 12:46:27,629 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla
[2024-11-03 12:46:27,631 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 12:46:27,631 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (4)] Waiting until timeout for monitored process
[2024-11-03 12:46:27,771 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-03 12:46:27,773 INFO  L255         TraceCheckSpWp]: Trace formula consists of 384 conjuncts, 4 conjuncts are in the unsatisfiable core
[2024-11-03 12:46:27,776 INFO  L278         TraceCheckSpWp]: Computing forward predicates...
[2024-11-03 12:46:31,972 INFO  L134       CoverageAnalysis]: Checked inductivity of 1984 backedges. 891 proven. 63 refuted. 0 times theorem prover too weak. 1030 trivial. 0 not checked.
[2024-11-03 12:46:31,972 INFO  L311         TraceCheckSpWp]: Computing backward predicates...
[2024-11-03 12:46:35,974 INFO  L134       CoverageAnalysis]: Checked inductivity of 1984 backedges. 30 proven. 63 refuted. 0 times theorem prover too weak. 1891 trivial. 0 not checked.
[2024-11-03 12:46:35,974 INFO  L136   FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2024-11-03 12:46:35,974 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [398933430]
[2024-11-03 12:46:35,974 INFO  L158   FreeRefinementEngine]: IpTcStrategyModulePreferences [398933430] provided 0 perfect and 2 imperfect interpolant sequences
[2024-11-03 12:46:35,975 INFO  L185   FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2024-11-03 12:46:35,975 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7
[2024-11-03 12:46:35,975 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1776841170]
[2024-11-03 12:46:35,975 INFO  L85    oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2024-11-03 12:46:35,975 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2024-11-03 12:46:35,976 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2024-11-03 12:46:35,978 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2024-11-03 12:46:35,978 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42
[2024-11-03 12:46:35,978 INFO  L87              Difference]: Start difference. First operand 125 states and 195 transitions. Second operand  has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 7 states have internal predecessors, (75), 2 states have call successors, (53), 2 states have call predecessors, (53), 4 states have return successors, (54), 2 states have call predecessors, (54), 2 states have call successors, (54)
[2024-11-03 12:46:43,737 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.33s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers []
[2024-11-03 12:46:47,745 WARN  L539   Checker$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 12:46:51,755 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 12:46:52,832 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-03 12:46:52,832 INFO  L93              Difference]: Finished difference Result 277 states and 425 transitions.
[2024-11-03 12:46:52,834 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. 
[2024-11-03 12:46:52,834 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 7 states have internal predecessors, (75), 2 states have call successors, (53), 2 states have call predecessors, (53), 4 states have return successors, (54), 2 states have call predecessors, (54), 2 states have call successors, (54) Word has length 223
[2024-11-03 12:46:52,836 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-03 12:46:52,837 INFO  L225             Difference]: With dead ends: 277
[2024-11-03 12:46:52,837 INFO  L226             Difference]: Without dead ends: 155
[2024-11-03 12:46:52,838 INFO  L431           NwaCegarLoop]: 0 DeclaredPredicates, 447 GetRequests, 438 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90
[2024-11-03 12:46:52,843 INFO  L432           NwaCegarLoop]: 168 mSDtfsCounter, 111 mSDsluCounter, 252 mSDsCounter, 0 mSdLazyCounter, 234 mSolverCounterSat, 11 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 121 SdHoareTripleChecker+Valid, 420 SdHoareTripleChecker+Invalid, 248 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 234 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.5s IncrementalHoareTripleChecker+Time
[2024-11-03 12:46:52,843 INFO  L433           NwaCegarLoop]: SdHoareTripleChecker [121 Valid, 420 Invalid, 248 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 234 Invalid, 3 Unknown, 0 Unchecked, 16.5s Time]
[2024-11-03 12:46:52,844 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 155 states.
[2024-11-03 12:46:52,868 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 152.
[2024-11-03 12:46:52,868 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 152 states, 105 states have (on average 1.361904761904762) internal successors, (143), 106 states have internal predecessors, (143), 42 states have call successors, (42), 4 states have call predecessors, (42), 4 states have return successors, (42), 41 states have call predecessors, (42), 42 states have call successors, (42)
[2024-11-03 12:46:52,869 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 227 transitions.
[2024-11-03 12:46:52,870 INFO  L78                 Accepts]: Start accepts. Automaton has 152 states and 227 transitions. Word has length 223
[2024-11-03 12:46:52,870 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-03 12:46:52,870 INFO  L471      AbstractCegarLoop]: Abstraction has 152 states and 227 transitions.
[2024-11-03 12:46:52,870 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 7 states have internal predecessors, (75), 2 states have call successors, (53), 2 states have call predecessors, (53), 4 states have return successors, (54), 2 states have call predecessors, (54), 2 states have call successors, (54)
[2024-11-03 12:46:52,870 INFO  L276                IsEmpty]: Start isEmpty. Operand 152 states and 227 transitions.
[2024-11-03 12:46:52,879 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 225
[2024-11-03 12:46:52,879 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-03 12:46:52,879 INFO  L215           NwaCegarLoop]: trace histogram [32, 32, 32, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:46:52,887 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (4)] Ended with exit code 0
[2024-11-03 12:46:53,080 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla
[2024-11-03 12:46:53,080 INFO  L396      AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-03 12:46:53,083 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-03 12:46:53,083 INFO  L85        PathProgramCache]: Analyzing trace with hash -539589803, now seen corresponding path program 1 times
[2024-11-03 12:46:53,083 INFO  L118   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2024-11-03 12:46:53,083 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1173084652]
[2024-11-03 12:46:53,084 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-03 12:46:53,084 INFO  L173          SolverBuilder]: Constructing external solver with command: bitwuzla
[2024-11-03 12:46:53,084 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla
[2024-11-03 12:46:53,086 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 12:46:53,088 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (5)] Waiting until timeout for monitored process
[2024-11-03 12:46:53,196 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-03 12:46:53,198 INFO  L255         TraceCheckSpWp]: Trace formula consists of 386 conjuncts, 2 conjuncts are in the unsatisfiable core
[2024-11-03 12:46:53,203 INFO  L278         TraceCheckSpWp]: Computing forward predicates...
[2024-11-03 12:46:53,546 INFO  L134       CoverageAnalysis]: Checked inductivity of 1984 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1984 trivial. 0 not checked.
[2024-11-03 12:46:53,546 INFO  L311         TraceCheckSpWp]: Computing backward predicates...
[2024-11-03 12:46:55,871 INFO  L134       CoverageAnalysis]: Checked inductivity of 1984 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1984 trivial. 0 not checked.
[2024-11-03 12:46:55,872 INFO  L136   FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2024-11-03 12:46:55,872 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1173084652]
[2024-11-03 12:46:55,872 INFO  L158   FreeRefinementEngine]: IpTcStrategyModulePreferences [1173084652] provided 2 perfect and 0 imperfect interpolant sequences
[2024-11-03 12:46:55,872 INFO  L185   FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences.
[2024-11-03 12:46:55,872 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3
[2024-11-03 12:46:55,872 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [185358700]
[2024-11-03 12:46:55,872 INFO  L85    oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton
[2024-11-03 12:46:55,873 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2024-11-03 12:46:55,873 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2024-11-03 12:46:55,873 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2024-11-03 12:46:55,873 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2024-11-03 12:46:55,874 INFO  L87              Difference]: Start difference. First operand 152 states and 227 transitions. Second operand  has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 1 states have call successors, (32), 1 states have call predecessors, (32), 1 states have return successors, (32), 1 states have call predecessors, (32), 1 states have call successors, (32)
[2024-11-03 12:47:00,792 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.33s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers []
[2024-11-03 12:47:04,799 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 12:47:05,011 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-03 12:47:05,011 INFO  L93              Difference]: Finished difference Result 362 states and 541 transitions.
[2024-11-03 12:47:05,013 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2024-11-03 12:47:05,013 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 1 states have call successors, (32), 1 states have call predecessors, (32), 1 states have return successors, (32), 1 states have call predecessors, (32), 1 states have call successors, (32) Word has length 224
[2024-11-03 12:47:05,014 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-03 12:47:05,027 INFO  L225             Difference]: With dead ends: 362
[2024-11-03 12:47:05,027 INFO  L226             Difference]: Without dead ends: 236
[2024-11-03 12:47:05,028 INFO  L431           NwaCegarLoop]: 0 DeclaredPredicates, 446 GetRequests, 445 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2024-11-03 12:47:05,029 INFO  L432           NwaCegarLoop]: 218 mSDtfsCounter, 105 mSDsluCounter, 171 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 2 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 389 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.1s IncrementalHoareTripleChecker+Time
[2024-11-03 12:47:05,029 INFO  L433           NwaCegarLoop]: SdHoareTripleChecker [105 Valid, 389 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 25 Invalid, 2 Unknown, 0 Unchecked, 9.1s Time]
[2024-11-03 12:47:05,030 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 236 states.
[2024-11-03 12:47:05,064 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 236 to 233.
[2024-11-03 12:47:05,065 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 233 states, 171 states have (on average 1.3859649122807018) internal successors, (237), 173 states have internal predecessors, (237), 54 states have call successors, (54), 7 states have call predecessors, (54), 7 states have return successors, (54), 52 states have call predecessors, (54), 54 states have call successors, (54)
[2024-11-03 12:47:05,066 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 345 transitions.
[2024-11-03 12:47:05,067 INFO  L78                 Accepts]: Start accepts. Automaton has 233 states and 345 transitions. Word has length 224
[2024-11-03 12:47:05,070 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-03 12:47:05,070 INFO  L471      AbstractCegarLoop]: Abstraction has 233 states and 345 transitions.
[2024-11-03 12:47:05,070 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 1 states have call successors, (32), 1 states have call predecessors, (32), 1 states have return successors, (32), 1 states have call predecessors, (32), 1 states have call successors, (32)
[2024-11-03 12:47:05,071 INFO  L276                IsEmpty]: Start isEmpty. Operand 233 states and 345 transitions.
[2024-11-03 12:47:05,073 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 225
[2024-11-03 12:47:05,073 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-03 12:47:05,074 INFO  L215           NwaCegarLoop]: trace histogram [32, 32, 32, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:47:05,082 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (5)] Ended with exit code 0
[2024-11-03 12:47:05,274 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla
[2024-11-03 12:47:05,275 INFO  L396      AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-03 12:47:05,275 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-03 12:47:05,275 INFO  L85        PathProgramCache]: Analyzing trace with hash -758444521, now seen corresponding path program 1 times
[2024-11-03 12:47:05,275 INFO  L118   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2024-11-03 12:47:05,276 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [657487816]
[2024-11-03 12:47:05,276 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-03 12:47:05,276 INFO  L173          SolverBuilder]: Constructing external solver with command: bitwuzla
[2024-11-03 12:47:05,276 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla
[2024-11-03 12:47:05,277 INFO  L229       MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null)
[2024-11-03 12:47:05,279 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (6)] Waiting until timeout for monitored process
[2024-11-03 12:47:05,401 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-03 12:47:05,404 INFO  L255         TraceCheckSpWp]: Trace formula consists of 386 conjuncts, 4 conjuncts are in the unsatisfiable core
[2024-11-03 12:47:05,409 INFO  L278         TraceCheckSpWp]: Computing forward predicates...
[2024-11-03 12:47:09,666 INFO  L134       CoverageAnalysis]: Checked inductivity of 1984 backedges. 993 proven. 54 refuted. 0 times theorem prover too weak. 937 trivial. 0 not checked.
[2024-11-03 12:47:09,667 INFO  L311         TraceCheckSpWp]: Computing backward predicates...
[2024-11-03 12:47:14,214 INFO  L134       CoverageAnalysis]: Checked inductivity of 1984 backedges. 39 proven. 54 refuted. 0 times theorem prover too weak. 1891 trivial. 0 not checked.
[2024-11-03 12:47:14,214 INFO  L136   FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2024-11-03 12:47:14,214 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [657487816]
[2024-11-03 12:47:14,215 INFO  L158   FreeRefinementEngine]: IpTcStrategyModulePreferences [657487816] provided 0 perfect and 2 imperfect interpolant sequences
[2024-11-03 12:47:14,215 INFO  L185   FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2024-11-03 12:47:14,215 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7
[2024-11-03 12:47:14,215 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1329901265]
[2024-11-03 12:47:14,215 INFO  L85    oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2024-11-03 12:47:14,215 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2024-11-03 12:47:14,215 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2024-11-03 12:47:14,216 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2024-11-03 12:47:14,218 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42
[2024-11-03 12:47:14,219 INFO  L87              Difference]: Start difference. First operand 233 states and 345 transitions. Second operand  has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 7 states have internal predecessors, (76), 2 states have call successors, (50), 2 states have call predecessors, (50), 4 states have return successors, (51), 2 states have call predecessors, (51), 2 states have call successors, (51)
[2024-11-03 12:47:22,782 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.35s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers []
[2024-11-03 12:47:26,784 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers []
[2024-11-03 12:47:30,787 WARN  L539   Checker$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 12:47:30,790 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-03 12:47:30,790 INFO  L93              Difference]: Finished difference Result 367 states and 544 transitions.
[2024-11-03 12:47:30,915 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. 
[2024-11-03 12:47:30,916 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 7 states have internal predecessors, (76), 2 states have call successors, (50), 2 states have call predecessors, (50), 4 states have return successors, (51), 2 states have call predecessors, (51), 2 states have call successors, (51) Word has length 224
[2024-11-03 12:47:30,916 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-03 12:47:30,918 INFO  L225             Difference]: With dead ends: 367
[2024-11-03 12:47:30,918 INFO  L226             Difference]: Without dead ends: 160
[2024-11-03 12:47:30,918 INFO  L431           NwaCegarLoop]: 0 DeclaredPredicates, 450 GetRequests, 440 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110
[2024-11-03 12:47:30,919 INFO  L432           NwaCegarLoop]: 142 mSDtfsCounter, 286 mSDsluCounter, 217 mSDsCounter, 0 mSdLazyCounter, 198 mSolverCounterSat, 61 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 298 SdHoareTripleChecker+Valid, 359 SdHoareTripleChecker+Invalid, 262 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 198 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.0s IncrementalHoareTripleChecker+Time
[2024-11-03 12:47:30,919 INFO  L433           NwaCegarLoop]: SdHoareTripleChecker [298 Valid, 359 Invalid, 262 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 198 Invalid, 3 Unknown, 0 Unchecked, 16.0s Time]
[2024-11-03 12:47:30,920 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 160 states.
[2024-11-03 12:47:30,927 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 156.
[2024-11-03 12:47:30,927 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 156 states, 108 states have (on average 1.3333333333333333) internal successors, (144), 109 states have internal predecessors, (144), 42 states have call successors, (42), 5 states have call predecessors, (42), 5 states have return successors, (42), 41 states have call predecessors, (42), 42 states have call successors, (42)
[2024-11-03 12:47:30,928 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 228 transitions.
[2024-11-03 12:47:30,928 INFO  L78                 Accepts]: Start accepts. Automaton has 156 states and 228 transitions. Word has length 224
[2024-11-03 12:47:30,928 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-03 12:47:30,928 INFO  L471      AbstractCegarLoop]: Abstraction has 156 states and 228 transitions.
[2024-11-03 12:47:30,928 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 7 states have internal predecessors, (76), 2 states have call successors, (50), 2 states have call predecessors, (50), 4 states have return successors, (51), 2 states have call predecessors, (51), 2 states have call successors, (51)
[2024-11-03 12:47:30,928 INFO  L276                IsEmpty]: Start isEmpty. Operand 156 states and 228 transitions.
[2024-11-03 12:47:30,929 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 225
[2024-11-03 12:47:30,929 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-03 12:47:30,929 INFO  L215           NwaCegarLoop]: trace histogram [32, 32, 32, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:47:30,940 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (6)] Ended with exit code 0
[2024-11-03 12:47:31,130 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla
[2024-11-03 12:47:31,130 INFO  L396      AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-03 12:47:31,131 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-03 12:47:31,131 INFO  L85        PathProgramCache]: Analyzing trace with hash 162010071, now seen corresponding path program 1 times
[2024-11-03 12:47:31,131 INFO  L118   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2024-11-03 12:47:31,131 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1670135921]
[2024-11-03 12:47:31,133 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-03 12:47:31,133 INFO  L173          SolverBuilder]: Constructing external solver with command: bitwuzla
[2024-11-03 12:47:31,133 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla
[2024-11-03 12:47:31,134 INFO  L229       MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null)
[2024-11-03 12:47:31,135 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (7)] Waiting until timeout for monitored process
[2024-11-03 12:47:31,208 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-03 12:47:31,210 INFO  L255         TraceCheckSpWp]: Trace formula consists of 386 conjuncts, 5 conjuncts are in the unsatisfiable core
[2024-11-03 12:47:31,213 INFO  L278         TraceCheckSpWp]: Computing forward predicates...