/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --cacsl2boogietranslator.allow.undefined.functions true --traceabstraction.smt.solver External_ModelsAndUnsatCoreMode --traceabstraction.command.for.external.solver 'cvc4 --incremental --print-success --lang smt' -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf -i ../../../trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount100_file-35.i


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


This is Ultimate 0.2.5-dev-b75d321-m
[2024-11-03 00:57:02,676 INFO  L188        SettingsManager]: Resetting all preferences to default values...
[2024-11-03 00:57:02,757 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 00:57:02,763 WARN  L101        SettingsManager]: Preference file contains the following unknown settings:
[2024-11-03 00:57:02,763 WARN  L103        SettingsManager]:   * de.uni_freiburg.informatik.ultimate.core.Log level for class
[2024-11-03 00:57:02,794 INFO  L130        SettingsManager]: Preferences different from defaults after loading the file:
[2024-11-03 00:57:02,796 INFO  L151        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2024-11-03 00:57:02,796 INFO  L153        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2024-11-03 00:57:02,797 INFO  L151        SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults:
[2024-11-03 00:57:02,799 INFO  L153        SettingsManager]:  * Use memory slicer=true
[2024-11-03 00:57:02,799 INFO  L151        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2024-11-03 00:57:02,799 INFO  L153        SettingsManager]:  * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2024-11-03 00:57:02,800 INFO  L151        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2024-11-03 00:57:02,803 INFO  L153        SettingsManager]:  * Create parallel compositions if possible=false
[2024-11-03 00:57:02,803 INFO  L153        SettingsManager]:  * Use SBE=true
[2024-11-03 00:57:02,803 INFO  L151        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2024-11-03 00:57:02,803 INFO  L153        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2024-11-03 00:57:02,804 INFO  L153        SettingsManager]:  * sizeof long=4
[2024-11-03 00:57:02,804 INFO  L153        SettingsManager]:  * sizeof POINTER=4
[2024-11-03 00:57:02,804 INFO  L153        SettingsManager]:  * Check division by zero=IGNORE
[2024-11-03 00:57:02,804 INFO  L153        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2024-11-03 00:57:02,807 INFO  L153        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2024-11-03 00:57:02,808 INFO  L153        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2024-11-03 00:57:02,808 INFO  L153        SettingsManager]:  * Adapt memory model on pointer casts if necessary=true
[2024-11-03 00:57:02,808 INFO  L153        SettingsManager]:  * Use bitvectors instead of ints=true
[2024-11-03 00:57:02,808 INFO  L153        SettingsManager]:  * Allow undefined functions=false
[2024-11-03 00:57:02,808 INFO  L153        SettingsManager]:  * Memory model=HoenickeLindenmann_4ByteResolution
[2024-11-03 00:57:02,809 INFO  L153        SettingsManager]:  * sizeof long double=12
[2024-11-03 00:57:02,809 INFO  L153        SettingsManager]:  * Check if freed pointer was valid=false
[2024-11-03 00:57:02,809 INFO  L153        SettingsManager]:  * Use constant arrays=true
[2024-11-03 00:57:02,809 INFO  L151        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2024-11-03 00:57:02,809 INFO  L153        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2024-11-03 00:57:02,810 INFO  L153        SettingsManager]:  * Only consider context switches at boundaries of atomic blocks=true
[2024-11-03 00:57:02,810 INFO  L153        SettingsManager]:  * SMT solver=External_DefaultMode
[2024-11-03 00:57:02,810 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2024-11-03 00:57:02,810 INFO  L151        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2024-11-03 00:57:02,810 INFO  L153        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2024-11-03 00:57:02,811 INFO  L153        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopHeads
[2024-11-03 00:57:02,811 INFO  L153        SettingsManager]:  * Trace refinement strategy=WOLF
[2024-11-03 00:57:02,812 INFO  L153        SettingsManager]:  * Command for external solver=cvc4 --incremental --print-success --lang smt
[2024-11-03 00:57:02,812 INFO  L153        SettingsManager]:  * Apply one-shot large block encoding in concurrent analysis=false
[2024-11-03 00:57:02,812 INFO  L153        SettingsManager]:  * Automaton type used in concurrency analysis=PETRI_NET
[2024-11-03 00:57:02,812 INFO  L153        SettingsManager]:  * Order on configurations for Petri net unfoldings=DBO
[2024-11-03 00:57:02,813 INFO  L153        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2024-11-03 00:57:02,813 INFO  L153        SettingsManager]:  * Looper check in Petri net analysis=SEMANTIC
WARNING: An illegal reflective access operation has occurred
WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int)
WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Allow undefined functions -> true
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> External_ModelsAndUnsatCoreMode
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Command for external solver -> cvc4 --incremental --print-success --lang smt
[2024-11-03 00:57:03,057 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2024-11-03 00:57:03,084 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2024-11-03 00:57:03,088 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2024-11-03 00:57:03,089 INFO  L270        PluginConnector]: Initializing CDTParser...
[2024-11-03 00:57:03,089 INFO  L274        PluginConnector]: CDTParser initialized
[2024-11-03 00:57:03,091 INFO  L431   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount100_file-35.i
[2024-11-03 00:57:04,535 INFO  L533              CDTParser]: Created temporary CDT project at NULL
[2024-11-03 00:57:04,740 INFO  L384              CDTParser]: Found 1 translation units.
[2024-11-03 00:57:04,741 INFO  L180              CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount100_file-35.i
[2024-11-03 00:57:04,758 INFO  L427              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6ad79a7f8/c7e821fabd2641bfa25ad4d5dd8095c7/FLAGd828aecfb
[2024-11-03 00:57:04,777 INFO  L435              CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6ad79a7f8/c7e821fabd2641bfa25ad4d5dd8095c7
[2024-11-03 00:57:04,780 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2024-11-03 00:57:04,781 INFO  L133        ToolchainWalker]: Walking toolchain with 5 elements.
[2024-11-03 00:57:04,783 INFO  L112        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2024-11-03 00:57:04,783 INFO  L270        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2024-11-03 00:57:04,787 INFO  L274        PluginConnector]: CACSL2BoogieTranslator initialized
[2024-11-03 00:57:04,788 INFO  L184        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 12:57:04" (1/1) ...
[2024-11-03 00:57:04,789 INFO  L204        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@34eb2230 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:57:04, skipping insertion in model container
[2024-11-03 00:57:04,789 INFO  L184        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 12:57:04" (1/1) ...
[2024-11-03 00:57:04,822 INFO  L175         MainTranslator]: Built tables and reachable declarations
[2024-11-03 00:57:04,974 WARN  L250   ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount100_file-35.i[916,929]
[2024-11-03 00:57:05,049 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2024-11-03 00:57:05,066 INFO  L200         MainTranslator]: Completed pre-run
[2024-11-03 00:57:05,078 WARN  L250   ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount100_file-35.i[916,929]
[2024-11-03 00:57:05,127 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2024-11-03 00:57:05,151 INFO  L204         MainTranslator]: Completed translation
[2024-11-03 00:57:05,151 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:57:05 WrapperNode
[2024-11-03 00:57:05,151 INFO  L131        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2024-11-03 00:57:05,152 INFO  L112        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2024-11-03 00:57:05,153 INFO  L270        PluginConnector]: Initializing Boogie Procedure Inliner...
[2024-11-03 00:57:05,153 INFO  L274        PluginConnector]: Boogie Procedure Inliner initialized
[2024-11-03 00:57:05,158 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:57:05" (1/1) ...
[2024-11-03 00:57:05,172 INFO  L184        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:57:05" (1/1) ...
[2024-11-03 00:57:05,208 INFO  L138                Inliner]: procedures = 27, calls = 39, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 192
[2024-11-03 00:57:05,209 INFO  L131        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2024-11-03 00:57:05,210 INFO  L112        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2024-11-03 00:57:05,210 INFO  L270        PluginConnector]: Initializing Boogie Preprocessor...
[2024-11-03 00:57:05,210 INFO  L274        PluginConnector]: Boogie Preprocessor initialized
[2024-11-03 00:57:05,225 INFO  L184        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:57:05" (1/1) ...
[2024-11-03 00:57:05,225 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:57:05" (1/1) ...
[2024-11-03 00:57:05,230 INFO  L184        PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:57:05" (1/1) ...
[2024-11-03 00:57:05,248 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 00:57:05,249 INFO  L184        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:57:05" (1/1) ...
[2024-11-03 00:57:05,249 INFO  L184        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:57:05" (1/1) ...
[2024-11-03 00:57:05,261 INFO  L184        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:57:05" (1/1) ...
[2024-11-03 00:57:05,265 INFO  L184        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:57:05" (1/1) ...
[2024-11-03 00:57:05,278 INFO  L184        PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:57:05" (1/1) ...
[2024-11-03 00:57:05,281 INFO  L184        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:57:05" (1/1) ...
[2024-11-03 00:57:05,293 INFO  L131        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2024-11-03 00:57:05,294 INFO  L112        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2024-11-03 00:57:05,294 INFO  L270        PluginConnector]: Initializing RCFGBuilder...
[2024-11-03 00:57:05,294 INFO  L274        PluginConnector]: RCFGBuilder initialized
[2024-11-03 00:57:05,295 INFO  L184        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:57:05" (1/1) ...
[2024-11-03 00:57:05,304 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2024-11-03 00:57:05,316 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2024-11-03 00:57:05,335 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 00:57:05,339 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 00:57:05,373 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2024-11-03 00:57:05,373 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0
[2024-11-03 00:57:05,373 INFO  L130     BoogieDeclarations]: Found specification of procedure assume_abort_if_not
[2024-11-03 00:57:05,374 INFO  L138     BoogieDeclarations]: Found implementation of procedure assume_abort_if_not
[2024-11-03 00:57:05,374 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2024-11-03 00:57:05,374 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2024-11-03 00:57:05,485 INFO  L238             CfgBuilder]: Building ICFG
[2024-11-03 00:57:05,488 INFO  L264             CfgBuilder]: Building CFG for each procedure with an implementation
[2024-11-03 00:57:09,425 INFO  L?                        ?]: Removed 16 outVars from TransFormulas that were not future-live.
[2024-11-03 00:57:09,425 INFO  L287             CfgBuilder]: Performing block encoding
[2024-11-03 00:57:09,438 INFO  L311             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2024-11-03 00:57:09,439 INFO  L316             CfgBuilder]: Removed 1 assume(true) statements.
[2024-11-03 00:57:09,439 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 12:57:09 BoogieIcfgContainer
[2024-11-03 00:57:09,440 INFO  L131        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2024-11-03 00:57:09,442 INFO  L112        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2024-11-03 00:57:09,442 INFO  L270        PluginConnector]: Initializing TraceAbstraction...
[2024-11-03 00:57:09,446 INFO  L274        PluginConnector]: TraceAbstraction initialized
[2024-11-03 00:57:09,446 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 12:57:04" (1/3) ...
[2024-11-03 00:57:09,447 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9488acf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 12:57:09, skipping insertion in model container
[2024-11-03 00:57:09,447 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:57:05" (2/3) ...
[2024-11-03 00:57:09,447 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9488acf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 12:57:09, skipping insertion in model container
[2024-11-03 00:57:09,447 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 12:57:09" (3/3) ...
[2024-11-03 00:57:09,449 INFO  L112   eAbstractionObserver]: Analyzing ICFG hardness_operatoramount_amount100_file-35.i
[2024-11-03 00:57:09,464 INFO  L214   ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2024-11-03 00:57:09,465 INFO  L154   ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2024-11-03 00:57:09,536 INFO  L332      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2024-11-03 00:57:09,542 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;@67cf0995, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2024-11-03 00:57:09,542 INFO  L334      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2024-11-03 00:57:09,546 INFO  L276                IsEmpty]: Start isEmpty. Operand  has 83 states, 54 states have (on average 1.4444444444444444) internal successors, (78), 55 states have internal predecessors, (78), 26 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26)
[2024-11-03 00:57:09,558 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 169
[2024-11-03 00:57:09,558 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-03 00:57:09,559 INFO  L215           NwaCegarLoop]: trace histogram [26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-03 00:57:09,559 INFO  L396      AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-03 00:57:09,564 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-03 00:57:09,565 INFO  L85        PathProgramCache]: Analyzing trace with hash -1709239578, now seen corresponding path program 1 times
[2024-11-03 00:57:09,573 INFO  L118   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2024-11-03 00:57:09,574 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1883829993]
[2024-11-03 00:57:09,575 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-03 00:57:09,577 INFO  L173          SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt
[2024-11-03 00:57:09,577 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4
[2024-11-03 00:57:09,581 INFO  L229       MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null)
[2024-11-03 00:57:09,583 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (2)] Waiting until timeout for monitored process
[2024-11-03 00:57:10,002 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-03 00:57:10,025 INFO  L255         TraceCheckSpWp]: Trace formula consists of 288 conjuncts, 1 conjuncts are in the unsatisfiable core
[2024-11-03 00:57:10,037 INFO  L278         TraceCheckSpWp]: Computing forward predicates...
[2024-11-03 00:57:10,084 INFO  L134       CoverageAnalysis]: Checked inductivity of 1300 backedges. 50 proven. 0 refuted. 0 times theorem prover too weak. 1250 trivial. 0 not checked.
[2024-11-03 00:57:10,085 INFO  L311         TraceCheckSpWp]: Computing backward predicates...
[2024-11-03 00:57:10,525 INFO  L134       CoverageAnalysis]: Checked inductivity of 1300 backedges. 50 proven. 0 refuted. 0 times theorem prover too weak. 1250 trivial. 0 not checked.
[2024-11-03 00:57:10,526 INFO  L136   FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2024-11-03 00:57:10,527 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1883829993]
[2024-11-03 00:57:10,528 INFO  L158   FreeRefinementEngine]: IpTcStrategyModulePreferences [1883829993] provided 2 perfect and 0 imperfect interpolant sequences
[2024-11-03 00:57:10,528 INFO  L185   FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences.
[2024-11-03 00:57:10,529 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2
[2024-11-03 00:57:10,530 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [497651141]
[2024-11-03 00:57:10,531 INFO  L85    oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton
[2024-11-03 00:57:10,538 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 2 states
[2024-11-03 00:57:10,538 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2024-11-03 00:57:10,563 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants.
[2024-11-03 00:57:10,564 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2024-11-03 00:57:10,567 INFO  L87              Difference]: Start difference. First operand  has 83 states, 54 states have (on average 1.4444444444444444) internal successors, (78), 55 states have internal predecessors, (78), 26 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) Second operand  has 2 states, 2 states have (on average 21.5) internal successors, (43), 2 states have internal predecessors, (43), 1 states have call successors, (26), 1 states have call predecessors, (26), 2 states have return successors, (26), 2 states have call predecessors, (26), 1 states have call successors, (26)
[2024-11-03 00:57:10,606 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-03 00:57:10,606 INFO  L93              Difference]: Finished difference Result 159 states and 280 transitions.
[2024-11-03 00:57:10,608 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. 
[2024-11-03 00:57:10,610 INFO  L78                 Accepts]: Start accepts. Automaton has  has 2 states, 2 states have (on average 21.5) internal successors, (43), 2 states have internal predecessors, (43), 1 states have call successors, (26), 1 states have call predecessors, (26), 2 states have return successors, (26), 2 states have call predecessors, (26), 1 states have call successors, (26) Word has length 168
[2024-11-03 00:57:10,610 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-03 00:57:10,617 INFO  L225             Difference]: With dead ends: 159
[2024-11-03 00:57:10,617 INFO  L226             Difference]: Without dead ends: 79
[2024-11-03 00:57:10,621 INFO  L431           NwaCegarLoop]: 0 DeclaredPredicates, 334 GetRequests, 334 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 00:57:10,625 INFO  L432           NwaCegarLoop]: 122 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, 122 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 00:57:10,626 INFO  L433           NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 122 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2024-11-03 00:57:10,640 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 79 states.
[2024-11-03 00:57:10,667 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 79.
[2024-11-03 00:57:10,668 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 79 states, 51 states have (on average 1.3725490196078431) internal successors, (70), 51 states have internal predecessors, (70), 26 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26)
[2024-11-03 00:57:10,670 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 122 transitions.
[2024-11-03 00:57:10,673 INFO  L78                 Accepts]: Start accepts. Automaton has 79 states and 122 transitions. Word has length 168
[2024-11-03 00:57:10,673 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-03 00:57:10,673 INFO  L471      AbstractCegarLoop]: Abstraction has 79 states and 122 transitions.
[2024-11-03 00:57:10,674 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 2 states, 2 states have (on average 21.5) internal successors, (43), 2 states have internal predecessors, (43), 1 states have call successors, (26), 1 states have call predecessors, (26), 2 states have return successors, (26), 2 states have call predecessors, (26), 1 states have call successors, (26)
[2024-11-03 00:57:10,674 INFO  L276                IsEmpty]: Start isEmpty. Operand 79 states and 122 transitions.
[2024-11-03 00:57:10,680 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 169
[2024-11-03 00:57:10,680 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-03 00:57:10,680 INFO  L215           NwaCegarLoop]: trace histogram [26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-03 00:57:10,690 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (2)] Ended with exit code 0
[2024-11-03 00:57:10,881 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt
[2024-11-03 00:57:10,882 INFO  L396      AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-03 00:57:10,882 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-03 00:57:10,883 INFO  L85        PathProgramCache]: Analyzing trace with hash 2066946854, now seen corresponding path program 1 times
[2024-11-03 00:57:10,883 INFO  L118   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2024-11-03 00:57:10,883 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1193679133]
[2024-11-03 00:57:10,883 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-03 00:57:10,883 INFO  L173          SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt
[2024-11-03 00:57:10,884 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4
[2024-11-03 00:57:10,885 INFO  L229       MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null)
[2024-11-03 00:57:10,887 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (3)] Waiting until timeout for monitored process
[2024-11-03 00:57:11,238 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-03 00:57:11,266 INFO  L255         TraceCheckSpWp]: Trace formula consists of 288 conjuncts, 2 conjuncts are in the unsatisfiable core
[2024-11-03 00:57:11,276 INFO  L278         TraceCheckSpWp]: Computing forward predicates...
[2024-11-03 00:57:11,388 INFO  L134       CoverageAnalysis]: Checked inductivity of 1300 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked.
[2024-11-03 00:57:11,388 INFO  L311         TraceCheckSpWp]: Computing backward predicates...
[2024-11-03 00:57:11,801 INFO  L134       CoverageAnalysis]: Checked inductivity of 1300 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked.
[2024-11-03 00:57:11,802 INFO  L136   FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2024-11-03 00:57:11,802 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1193679133]
[2024-11-03 00:57:11,802 INFO  L158   FreeRefinementEngine]: IpTcStrategyModulePreferences [1193679133] provided 2 perfect and 0 imperfect interpolant sequences
[2024-11-03 00:57:11,802 INFO  L185   FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences.
[2024-11-03 00:57:11,802 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3
[2024-11-03 00:57:11,803 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1522500299]
[2024-11-03 00:57:11,803 INFO  L85    oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton
[2024-11-03 00:57:11,804 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2024-11-03 00:57:11,805 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2024-11-03 00:57:11,805 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2024-11-03 00:57:11,806 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2024-11-03 00:57:11,806 INFO  L87              Difference]: Start difference. First operand 79 states and 122 transitions. Second operand  has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26)
[2024-11-03 00:57:13,732 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-03 00:57:13,732 INFO  L93              Difference]: Finished difference Result 185 states and 283 transitions.
[2024-11-03 00:57:13,732 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2024-11-03 00:57:13,733 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) Word has length 168
[2024-11-03 00:57:13,734 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-03 00:57:13,735 INFO  L225             Difference]: With dead ends: 185
[2024-11-03 00:57:13,735 INFO  L226             Difference]: Without dead ends: 109
[2024-11-03 00:57:13,739 INFO  L431           NwaCegarLoop]: 0 DeclaredPredicates, 334 GetRequests, 333 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2024-11-03 00:57:13,741 INFO  L432           NwaCegarLoop]: 117 mSDtfsCounter, 35 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 214 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time
[2024-11-03 00:57:13,741 INFO  L433           NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 214 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time]
[2024-11-03 00:57:13,742 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 109 states.
[2024-11-03 00:57:13,759 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 106.
[2024-11-03 00:57:13,759 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 106 states, 75 states have (on average 1.36) internal successors, (102), 76 states have internal predecessors, (102), 28 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (28), 27 states have call predecessors, (28), 28 states have call successors, (28)
[2024-11-03 00:57:13,761 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 158 transitions.
[2024-11-03 00:57:13,762 INFO  L78                 Accepts]: Start accepts. Automaton has 106 states and 158 transitions. Word has length 168
[2024-11-03 00:57:13,763 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-03 00:57:13,763 INFO  L471      AbstractCegarLoop]: Abstraction has 106 states and 158 transitions.
[2024-11-03 00:57:13,763 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26)
[2024-11-03 00:57:13,763 INFO  L276                IsEmpty]: Start isEmpty. Operand 106 states and 158 transitions.
[2024-11-03 00:57:13,767 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 170
[2024-11-03 00:57:13,767 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-03 00:57:13,768 INFO  L215           NwaCegarLoop]: trace histogram [26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-03 00:57:13,773 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (3)] Ended with exit code 0
[2024-11-03 00:57:13,968 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt
[2024-11-03 00:57:13,969 INFO  L396      AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-03 00:57:13,969 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-03 00:57:13,970 INFO  L85        PathProgramCache]: Analyzing trace with hash 562004794, now seen corresponding path program 1 times
[2024-11-03 00:57:13,970 INFO  L118   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2024-11-03 00:57:13,970 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2068424747]
[2024-11-03 00:57:13,970 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-03 00:57:13,970 INFO  L173          SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt
[2024-11-03 00:57:13,970 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4
[2024-11-03 00:57:13,972 INFO  L229       MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null)
[2024-11-03 00:57:13,973 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (4)] Waiting until timeout for monitored process
[2024-11-03 00:57:14,344 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-03 00:57:14,371 INFO  L255         TraceCheckSpWp]: Trace formula consists of 288 conjuncts, 5 conjuncts are in the unsatisfiable core
[2024-11-03 00:57:14,378 INFO  L278         TraceCheckSpWp]: Computing forward predicates...
[2024-11-03 00:57:17,452 INFO  L134       CoverageAnalysis]: Checked inductivity of 1300 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked.
[2024-11-03 00:57:17,453 INFO  L311         TraceCheckSpWp]: Computing backward predicates...
[2024-11-03 00:57:18,208 INFO  L134       CoverageAnalysis]: Checked inductivity of 1300 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked.
[2024-11-03 00:57:18,209 INFO  L136   FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2024-11-03 00:57:18,209 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2068424747]
[2024-11-03 00:57:18,209 INFO  L158   FreeRefinementEngine]: IpTcStrategyModulePreferences [2068424747] provided 2 perfect and 0 imperfect interpolant sequences
[2024-11-03 00:57:18,209 INFO  L185   FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences.
[2024-11-03 00:57:18,209 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 4] imperfect sequences [] total 6
[2024-11-03 00:57:18,210 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [627450648]
[2024-11-03 00:57:18,210 INFO  L85    oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton
[2024-11-03 00:57:18,210 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2024-11-03 00:57:18,211 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2024-11-03 00:57:18,211 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2024-11-03 00:57:18,212 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30
[2024-11-03 00:57:18,212 INFO  L87              Difference]: Start difference. First operand 106 states and 158 transitions. Second operand  has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 2 states have call successors, (52), 2 states have call predecessors, (52), 2 states have return successors, (52), 2 states have call predecessors, (52), 2 states have call successors, (52)
[2024-11-03 00:57:19,520 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.03s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers []
[2024-11-03 00:57:23,179 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.51s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers []
[2024-11-03 00:57:23,224 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-03 00:57:23,225 INFO  L93              Difference]: Finished difference Result 350 states and 521 transitions.
[2024-11-03 00:57:23,226 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2024-11-03 00:57:23,226 INFO  L78                 Accepts]: Start accepts. Automaton has  has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 2 states have call successors, (52), 2 states have call predecessors, (52), 2 states have return successors, (52), 2 states have call predecessors, (52), 2 states have call successors, (52) Word has length 169
[2024-11-03 00:57:23,227 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-03 00:57:23,231 INFO  L225             Difference]: With dead ends: 350
[2024-11-03 00:57:23,231 INFO  L226             Difference]: Without dead ends: 247
[2024-11-03 00:57:23,232 INFO  L431           NwaCegarLoop]: 0 DeclaredPredicates, 338 GetRequests, 333 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42
[2024-11-03 00:57:23,233 INFO  L432           NwaCegarLoop]: 116 mSDtfsCounter, 152 mSDsluCounter, 510 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 152 SdHoareTripleChecker+Valid, 626 SdHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time
[2024-11-03 00:57:23,234 INFO  L433           NwaCegarLoop]: SdHoareTripleChecker [152 Valid, 626 Invalid, 90 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 4.9s Time]
[2024-11-03 00:57:23,235 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 247 states.
[2024-11-03 00:57:23,261 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 247 to 194.
[2024-11-03 00:57:23,262 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 194 states, 135 states have (on average 1.3407407407407408) internal successors, (181), 136 states have internal predecessors, (181), 54 states have call successors, (54), 4 states have call predecessors, (54), 4 states have return successors, (54), 53 states have call predecessors, (54), 54 states have call successors, (54)
[2024-11-03 00:57:23,263 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 289 transitions.
[2024-11-03 00:57:23,264 INFO  L78                 Accepts]: Start accepts. Automaton has 194 states and 289 transitions. Word has length 169
[2024-11-03 00:57:23,265 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-03 00:57:23,265 INFO  L471      AbstractCegarLoop]: Abstraction has 194 states and 289 transitions.
[2024-11-03 00:57:23,265 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 2 states have call successors, (52), 2 states have call predecessors, (52), 2 states have return successors, (52), 2 states have call predecessors, (52), 2 states have call successors, (52)
[2024-11-03 00:57:23,266 INFO  L276                IsEmpty]: Start isEmpty. Operand 194 states and 289 transitions.
[2024-11-03 00:57:23,267 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 170
[2024-11-03 00:57:23,268 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-03 00:57:23,268 INFO  L215           NwaCegarLoop]: trace histogram [26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-03 00:57:23,276 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (4)] Ended with exit code 0
[2024-11-03 00:57:23,468 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt
[2024-11-03 00:57:23,469 INFO  L396      AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-03 00:57:23,470 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-03 00:57:23,470 INFO  L85        PathProgramCache]: Analyzing trace with hash -717858884, now seen corresponding path program 1 times
[2024-11-03 00:57:23,470 INFO  L118   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2024-11-03 00:57:23,470 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [438050106]
[2024-11-03 00:57:23,470 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-03 00:57:23,470 INFO  L173          SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt
[2024-11-03 00:57:23,471 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4
[2024-11-03 00:57:23,473 INFO  L229       MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null)
[2024-11-03 00:57:23,474 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (5)] Waiting until timeout for monitored process
[2024-11-03 00:57:24,400 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-03 00:57:24,412 INFO  L255         TraceCheckSpWp]: Trace formula consists of 287 conjuncts, 7 conjuncts are in the unsatisfiable core
[2024-11-03 00:57:24,416 INFO  L278         TraceCheckSpWp]: Computing forward predicates...
[2024-11-03 00:57:28,406 INFO  L134       CoverageAnalysis]: Checked inductivity of 1300 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked.
[2024-11-03 00:57:28,406 INFO  L311         TraceCheckSpWp]: Computing backward predicates...
[2024-11-03 00:57:36,147 INFO  L134       CoverageAnalysis]: Checked inductivity of 1300 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked.
[2024-11-03 00:57:36,148 INFO  L136   FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2024-11-03 00:57:36,148 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [438050106]
[2024-11-03 00:57:36,148 INFO  L158   FreeRefinementEngine]: IpTcStrategyModulePreferences [438050106] provided 2 perfect and 0 imperfect interpolant sequences
[2024-11-03 00:57:36,148 INFO  L185   FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences.
[2024-11-03 00:57:36,149 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 4] imperfect sequences [] total 6
[2024-11-03 00:57:36,149 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [936506631]
[2024-11-03 00:57:36,149 INFO  L85    oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton
[2024-11-03 00:57:36,150 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2024-11-03 00:57:36,150 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2024-11-03 00:57:36,151 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2024-11-03 00:57:36,151 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30
[2024-11-03 00:57:36,153 INFO  L87              Difference]: Start difference. First operand 194 states and 289 transitions. Second operand  has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 6 states have internal predecessors, (65), 2 states have call successors, (52), 2 states have call predecessors, (52), 2 states have return successors, (52), 2 states have call predecessors, (52), 2 states have call successors, (52)
[2024-11-03 00:57:38,677 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.69s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers []
[2024-11-03 00:57:41,243 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.53s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers []
[2024-11-03 00:57:44,081 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.84s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers []
[2024-11-03 00:57:45,552 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.06s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers []
[2024-11-03 00:57:50,905 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.56s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers []
[2024-11-03 00:57:54,762 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.86s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode], hasArrays=false, hasNonlinArith=false, quantifiers []
[2024-11-03 00:57:59,534 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.08s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers []
[2024-11-03 00:58:01,884 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.35s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers []
[2024-11-03 00:58:03,426 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.54s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers []
[2024-11-03 00:58:04,902 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.08s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers []
[2024-11-03 00:58:04,905 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-03 00:58:04,905 INFO  L93              Difference]: Finished difference Result 572 states and 853 transitions.
[2024-11-03 00:58:04,929 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2024-11-03 00:58:04,930 INFO  L78                 Accepts]: Start accepts. Automaton has  has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 6 states have internal predecessors, (65), 2 states have call successors, (52), 2 states have call predecessors, (52), 2 states have return successors, (52), 2 states have call predecessors, (52), 2 states have call successors, (52) Word has length 169
[2024-11-03 00:58:04,930 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-03 00:58:04,933 INFO  L225             Difference]: With dead ends: 572
[2024-11-03 00:58:04,934 INFO  L226             Difference]: Without dead ends: 381
[2024-11-03 00:58:04,935 INFO  L431           NwaCegarLoop]: 0 DeclaredPredicates, 338 GetRequests, 333 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42
[2024-11-03 00:58:04,936 INFO  L432           NwaCegarLoop]: 110 mSDtfsCounter, 168 mSDsluCounter, 366 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 106 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 28.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 168 SdHoareTripleChecker+Valid, 476 SdHoareTripleChecker+Invalid, 170 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 106 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 28.6s IncrementalHoareTripleChecker+Time
[2024-11-03 00:58:04,936 INFO  L433           NwaCegarLoop]: SdHoareTripleChecker [168 Valid, 476 Invalid, 170 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [106 Valid, 63 Invalid, 1 Unknown, 0 Unchecked, 28.6s Time]
[2024-11-03 00:58:04,938 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 381 states.
[2024-11-03 00:58:04,981 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 381 to 245.
[2024-11-03 00:58:04,982 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 245 states, 158 states have (on average 1.2911392405063291) internal successors, (204), 159 states have internal predecessors, (204), 80 states have call successors, (80), 6 states have call predecessors, (80), 6 states have return successors, (80), 79 states have call predecessors, (80), 80 states have call successors, (80)
[2024-11-03 00:58:04,987 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 245 states to 245 states and 364 transitions.
[2024-11-03 00:58:04,988 INFO  L78                 Accepts]: Start accepts. Automaton has 245 states and 364 transitions. Word has length 169
[2024-11-03 00:58:04,988 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-03 00:58:04,988 INFO  L471      AbstractCegarLoop]: Abstraction has 245 states and 364 transitions.
[2024-11-03 00:58:04,989 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 6 states have internal predecessors, (65), 2 states have call successors, (52), 2 states have call predecessors, (52), 2 states have return successors, (52), 2 states have call predecessors, (52), 2 states have call successors, (52)
[2024-11-03 00:58:04,989 INFO  L276                IsEmpty]: Start isEmpty. Operand 245 states and 364 transitions.
[2024-11-03 00:58:04,992 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 171
[2024-11-03 00:58:04,992 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-03 00:58:04,992 INFO  L215           NwaCegarLoop]: trace histogram [26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-03 00:58:05,009 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (5)] Ended with exit code 0
[2024-11-03 00:58:05,193 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt
[2024-11-03 00:58:05,194 INFO  L396      AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-03 00:58:05,194 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-03 00:58:05,194 INFO  L85        PathProgramCache]: Analyzing trace with hash 567672504, now seen corresponding path program 1 times
[2024-11-03 00:58:05,194 INFO  L118   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2024-11-03 00:58:05,194 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [375957284]
[2024-11-03 00:58:05,194 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-03 00:58:05,195 INFO  L173          SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt
[2024-11-03 00:58:05,195 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4
[2024-11-03 00:58:05,196 INFO  L229       MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null)
[2024-11-03 00:58:05,197 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (6)] Waiting until timeout for monitored process
[2024-11-03 00:58:06,096 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-03 00:58:06,108 INFO  L255         TraceCheckSpWp]: Trace formula consists of 288 conjuncts, 6 conjuncts are in the unsatisfiable core
[2024-11-03 00:58:06,112 INFO  L278         TraceCheckSpWp]: Computing forward predicates...
[2024-11-03 00:58:08,521 INFO  L134       CoverageAnalysis]: Checked inductivity of 1300 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked.
[2024-11-03 00:58:08,522 INFO  L311         TraceCheckSpWp]: Computing backward predicates...
[2024-11-03 00:58:09,459 INFO  L134       CoverageAnalysis]: Checked inductivity of 1300 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked.
[2024-11-03 00:58:09,459 INFO  L136   FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2024-11-03 00:58:09,459 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [375957284]
[2024-11-03 00:58:09,459 INFO  L158   FreeRefinementEngine]: IpTcStrategyModulePreferences [375957284] provided 2 perfect and 0 imperfect interpolant sequences
[2024-11-03 00:58:09,459 INFO  L185   FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences.
[2024-11-03 00:58:09,459 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 5] imperfect sequences [] total 8
[2024-11-03 00:58:09,460 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1171428791]
[2024-11-03 00:58:09,460 INFO  L85    oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton
[2024-11-03 00:58:09,460 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 8 states
[2024-11-03 00:58:09,460 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2024-11-03 00:58:09,461 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2024-11-03 00:58:09,461 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56
[2024-11-03 00:58:09,464 INFO  L87              Difference]: Start difference. First operand 245 states and 364 transitions. Second operand  has 8 states, 8 states have (on average 8.625) internal successors, (69), 8 states have internal predecessors, (69), 2 states have call successors, (52), 2 states have call predecessors, (52), 2 states have return successors, (52), 2 states have call predecessors, (52), 2 states have call successors, (52)
[2024-11-03 00:58:11,945 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-03 00:58:11,945 INFO  L93              Difference]: Finished difference Result 486 states and 723 transitions.
[2024-11-03 00:58:11,968 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2024-11-03 00:58:11,970 INFO  L78                 Accepts]: Start accepts. Automaton has  has 8 states, 8 states have (on average 8.625) internal successors, (69), 8 states have internal predecessors, (69), 2 states have call successors, (52), 2 states have call predecessors, (52), 2 states have return successors, (52), 2 states have call predecessors, (52), 2 states have call successors, (52) Word has length 170
[2024-11-03 00:58:11,970 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-03 00:58:11,973 INFO  L225             Difference]: With dead ends: 486
[2024-11-03 00:58:11,974 INFO  L226             Difference]: Without dead ends: 295
[2024-11-03 00:58:11,975 INFO  L431           NwaCegarLoop]: 0 DeclaredPredicates, 342 GetRequests, 333 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110
[2024-11-03 00:58:11,976 INFO  L432           NwaCegarLoop]: 115 mSDtfsCounter, 176 mSDsluCounter, 451 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 108 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 176 SdHoareTripleChecker+Valid, 566 SdHoareTripleChecker+Invalid, 148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 108 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time
[2024-11-03 00:58:11,976 INFO  L433           NwaCegarLoop]: SdHoareTripleChecker [176 Valid, 566 Invalid, 148 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [108 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time]
[2024-11-03 00:58:11,977 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 295 states.
[2024-11-03 00:58:12,013 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 295 to 248.
[2024-11-03 00:58:12,014 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 248 states, 161 states have (on average 1.2857142857142858) internal successors, (207), 162 states have internal predecessors, (207), 80 states have call successors, (80), 6 states have call predecessors, (80), 6 states have return successors, (80), 79 states have call predecessors, (80), 80 states have call successors, (80)
[2024-11-03 00:58:12,015 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 248 states to 248 states and 367 transitions.
[2024-11-03 00:58:12,016 INFO  L78                 Accepts]: Start accepts. Automaton has 248 states and 367 transitions. Word has length 170
[2024-11-03 00:58:12,016 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-03 00:58:12,017 INFO  L471      AbstractCegarLoop]: Abstraction has 248 states and 367 transitions.
[2024-11-03 00:58:12,017 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 8 states, 8 states have (on average 8.625) internal successors, (69), 8 states have internal predecessors, (69), 2 states have call successors, (52), 2 states have call predecessors, (52), 2 states have return successors, (52), 2 states have call predecessors, (52), 2 states have call successors, (52)
[2024-11-03 00:58:12,017 INFO  L276                IsEmpty]: Start isEmpty. Operand 248 states and 367 transitions.
[2024-11-03 00:58:12,018 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 171
[2024-11-03 00:58:12,018 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-03 00:58:12,019 INFO  L215           NwaCegarLoop]: trace histogram [26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-03 00:58:12,035 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (6)] Ended with exit code 0
[2024-11-03 00:58:12,219 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt
[2024-11-03 00:58:12,220 INFO  L396      AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-03 00:58:12,220 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-03 00:58:12,220 INFO  L85        PathProgramCache]: Analyzing trace with hash -1908766981, now seen corresponding path program 1 times
[2024-11-03 00:58:12,220 INFO  L118   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2024-11-03 00:58:12,220 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1065682280]
[2024-11-03 00:58:12,221 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-03 00:58:12,221 INFO  L173          SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt
[2024-11-03 00:58:12,221 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4
[2024-11-03 00:58:12,222 INFO  L229       MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null)
[2024-11-03 00:58:12,223 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (7)] Waiting until timeout for monitored process
[2024-11-03 00:58:13,711 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-03 00:58:13,727 INFO  L255         TraceCheckSpWp]: Trace formula consists of 288 conjuncts, 56 conjuncts are in the unsatisfiable core
[2024-11-03 00:58:13,737 INFO  L278         TraceCheckSpWp]: Computing forward predicates...