/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 'cvc5 --incremental --print-success --lang smt' -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Bitvector.epf -i ../../../trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.paper_v3.c


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


This is Ultimate 0.2.5-dev-356b6ba-m
[2024-11-01 13:38:35,525 INFO  L188        SettingsManager]: Resetting all preferences to default values...
[2024-11-01 13:38:35,589 INFO  L114        SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Bitvector.epf
[2024-11-01 13:38:35,594 WARN  L101        SettingsManager]: Preference file contains the following unknown settings:
[2024-11-01 13:38:35,595 WARN  L103        SettingsManager]:   * de.uni_freiburg.informatik.ultimate.core.Log level for class
[2024-11-01 13:38:35,622 INFO  L130        SettingsManager]: Preferences different from defaults after loading the file:
[2024-11-01 13:38:35,622 INFO  L151        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2024-11-01 13:38:35,623 INFO  L153        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2024-11-01 13:38:35,623 INFO  L151        SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults:
[2024-11-01 13:38:35,624 INFO  L153        SettingsManager]:  * Use memory slicer=true
[2024-11-01 13:38:35,624 INFO  L151        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2024-11-01 13:38:35,624 INFO  L153        SettingsManager]:  * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2024-11-01 13:38:35,625 INFO  L151        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2024-11-01 13:38:35,626 INFO  L153        SettingsManager]:  * Create parallel compositions if possible=false
[2024-11-01 13:38:35,626 INFO  L153        SettingsManager]:  * Use SBE=true
[2024-11-01 13:38:35,627 INFO  L151        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2024-11-01 13:38:35,627 INFO  L153        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2024-11-01 13:38:35,627 INFO  L153        SettingsManager]:  * Check division by zero=IGNORE
[2024-11-01 13:38:35,627 INFO  L153        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2024-11-01 13:38:35,627 INFO  L153        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2024-11-01 13:38:35,628 INFO  L153        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2024-11-01 13:38:35,631 INFO  L153        SettingsManager]:  * Adapt memory model on pointer casts if necessary=true
[2024-11-01 13:38:35,632 INFO  L153        SettingsManager]:  * Use bitvectors instead of ints=true
[2024-11-01 13:38:35,632 INFO  L153        SettingsManager]:  * Allow undefined functions=false
[2024-11-01 13:38:35,632 INFO  L153        SettingsManager]:  * Memory model=HoenickeLindenmann_4ByteResolution
[2024-11-01 13:38:35,632 INFO  L153        SettingsManager]:  * Check if freed pointer was valid=false
[2024-11-01 13:38:35,632 INFO  L153        SettingsManager]:  * Use constant arrays=true
[2024-11-01 13:38:35,633 INFO  L151        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2024-11-01 13:38:35,633 INFO  L153        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2024-11-01 13:38:35,633 INFO  L153        SettingsManager]:  * Only consider context switches at boundaries of atomic blocks=true
[2024-11-01 13:38:35,633 INFO  L153        SettingsManager]:  * SMT solver=External_DefaultMode
[2024-11-01 13:38:35,633 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2024-11-01 13:38:35,633 INFO  L151        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2024-11-01 13:38:35,634 INFO  L153        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2024-11-01 13:38:35,634 INFO  L153        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopHeads
[2024-11-01 13:38:35,634 INFO  L153        SettingsManager]:  * Trace refinement strategy=WOLF
[2024-11-01 13:38:35,634 INFO  L153        SettingsManager]:  * Command for external solver=cvc4 --incremental --print-success --lang smt 
[2024-11-01 13:38:35,634 INFO  L153        SettingsManager]:  * Apply one-shot large block encoding in concurrent analysis=false
[2024-11-01 13:38:35,634 INFO  L153        SettingsManager]:  * Automaton type used in concurrency analysis=PETRI_NET
[2024-11-01 13:38:35,634 INFO  L153        SettingsManager]:  * Order on configurations for Petri net unfoldings=DBO
[2024-11-01 13:38:35,635 INFO  L153        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2024-11-01 13:38:35,636 INFO  L153        SettingsManager]:  * Logic for external solver=AUFBV
[2024-11-01 13:38:35,636 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$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Allow undefined functions -> true
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> External_ModelsAndUnsatCoreMode
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Command for external solver -> cvc5 --incremental --print-success --lang smt
[2024-11-01 13:38:35,892 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2024-11-01 13:38:35,910 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2024-11-01 13:38:35,912 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2024-11-01 13:38:35,913 INFO  L270        PluginConnector]: Initializing CDTParser...
[2024-11-01 13:38:35,913 INFO  L274        PluginConnector]: CDTParser initialized
[2024-11-01 13:38:35,914 INFO  L431   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.paper_v3.c
[2024-11-01 13:38:37,176 INFO  L533              CDTParser]: Created temporary CDT project at NULL
[2024-11-01 13:38:37,322 INFO  L384              CDTParser]: Found 1 translation units.
[2024-11-01 13:38:37,322 INFO  L180              CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.paper_v3.c
[2024-11-01 13:38:37,328 INFO  L427              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/86767c359/602a5db7c619483095d3c46eb6cc3e1b/FLAG341533762
[2024-11-01 13:38:37,338 INFO  L435              CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/86767c359/602a5db7c619483095d3c46eb6cc3e1b
[2024-11-01 13:38:37,340 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2024-11-01 13:38:37,341 INFO  L133        ToolchainWalker]: Walking toolchain with 5 elements.
[2024-11-01 13:38:37,342 INFO  L112        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2024-11-01 13:38:37,342 INFO  L270        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2024-11-01 13:38:37,346 INFO  L274        PluginConnector]: CACSL2BoogieTranslator initialized
[2024-11-01 13:38:37,346 INFO  L184        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.11 01:38:37" (1/1) ...
[2024-11-01 13:38:37,347 INFO  L204        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@381e27ca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 01:38:37, skipping insertion in model container
[2024-11-01 13:38:37,347 INFO  L184        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.11 01:38:37" (1/1) ...
[2024-11-01 13:38:37,368 INFO  L175         MainTranslator]: Built tables and reachable declarations
[2024-11-01 13:38:37,504 WARN  L251   ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.paper_v3.c[1248,1261]
[2024-11-01 13:38:37,542 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2024-11-01 13:38:37,554 INFO  L200         MainTranslator]: Completed pre-run
[2024-11-01 13:38:37,567 WARN  L251   ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.paper_v3.c[1248,1261]
[2024-11-01 13:38:37,598 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2024-11-01 13:38:37,612 INFO  L204         MainTranslator]: Completed translation
[2024-11-01 13:38:37,613 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 01:38:37 WrapperNode
[2024-11-01 13:38:37,614 INFO  L131        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2024-11-01 13:38:37,615 INFO  L112        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2024-11-01 13:38:37,615 INFO  L270        PluginConnector]: Initializing Boogie Procedure Inliner...
[2024-11-01 13:38:37,615 INFO  L274        PluginConnector]: Boogie Procedure Inliner initialized
[2024-11-01 13:38:37,620 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 01:38:37" (1/1) ...
[2024-11-01 13:38:37,628 INFO  L184        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 01:38:37" (1/1) ...
[2024-11-01 13:38:37,649 INFO  L138                Inliner]: procedures = 17, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 108
[2024-11-01 13:38:37,650 INFO  L131        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2024-11-01 13:38:37,651 INFO  L112        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2024-11-01 13:38:37,654 INFO  L270        PluginConnector]: Initializing Boogie Preprocessor...
[2024-11-01 13:38:37,654 INFO  L274        PluginConnector]: Boogie Preprocessor initialized
[2024-11-01 13:38:37,663 INFO  L184        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 01:38:37" (1/1) ...
[2024-11-01 13:38:37,663 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 01:38:37" (1/1) ...
[2024-11-01 13:38:37,666 INFO  L184        PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 01:38:37" (1/1) ...
[2024-11-01 13:38:37,685 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].
[2024-11-01 13:38:37,685 INFO  L184        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 01:38:37" (1/1) ...
[2024-11-01 13:38:37,685 INFO  L184        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 01:38:37" (1/1) ...
[2024-11-01 13:38:37,694 INFO  L184        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 01:38:37" (1/1) ...
[2024-11-01 13:38:37,697 INFO  L184        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 01:38:37" (1/1) ...
[2024-11-01 13:38:37,701 INFO  L184        PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 01:38:37" (1/1) ...
[2024-11-01 13:38:37,702 INFO  L184        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 01:38:37" (1/1) ...
[2024-11-01 13:38:37,708 INFO  L131        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2024-11-01 13:38:37,709 INFO  L112        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2024-11-01 13:38:37,709 INFO  L270        PluginConnector]: Initializing RCFGBuilder...
[2024-11-01 13:38:37,710 INFO  L274        PluginConnector]: RCFGBuilder initialized
[2024-11-01 13:38:37,710 INFO  L184        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 01:38:37" (1/1) ...
[2024-11-01 13:38:37,715 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2024-11-01 13:38:37,726 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2024-11-01 13:38:37,739 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)
[2024-11-01 13:38:37,742 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
[2024-11-01 13:38:37,764 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2024-11-01 13:38:37,764 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0
[2024-11-01 13:38:37,764 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2024-11-01 13:38:37,764 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2024-11-01 13:38:37,840 INFO  L238             CfgBuilder]: Building ICFG
[2024-11-01 13:38:37,841 INFO  L264             CfgBuilder]: Building CFG for each procedure with an implementation
[2024-11-01 13:38:38,028 INFO  L?                        ?]: Removed 21 outVars from TransFormulas that were not future-live.
[2024-11-01 13:38:38,028 INFO  L287             CfgBuilder]: Performing block encoding
[2024-11-01 13:38:38,039 INFO  L311             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2024-11-01 13:38:38,040 INFO  L316             CfgBuilder]: Removed 1 assume(true) statements.
[2024-11-01 13:38:38,040 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.11 01:38:38 BoogieIcfgContainer
[2024-11-01 13:38:38,040 INFO  L131        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2024-11-01 13:38:38,042 INFO  L112        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2024-11-01 13:38:38,042 INFO  L270        PluginConnector]: Initializing TraceAbstraction...
[2024-11-01 13:38:38,046 INFO  L274        PluginConnector]: TraceAbstraction initialized
[2024-11-01 13:38:38,046 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.11 01:38:37" (1/3) ...
[2024-11-01 13:38:38,047 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67f37dc9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.11 01:38:38, skipping insertion in model container
[2024-11-01 13:38:38,047 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 01:38:37" (2/3) ...
[2024-11-01 13:38:38,047 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67f37dc9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.11 01:38:38, skipping insertion in model container
[2024-11-01 13:38:38,048 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.11 01:38:38" (3/3) ...
[2024-11-01 13:38:38,050 INFO  L112   eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.paper_v3.c
[2024-11-01 13:38:38,063 INFO  L214   ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2024-11-01 13:38:38,064 INFO  L154   ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2024-11-01 13:38:38,113 INFO  L332      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2024-11-01 13:38:38,118 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;@25c2ce7f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2024-11-01 13:38:38,118 INFO  L334      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2024-11-01 13:38:38,121 INFO  L276                IsEmpty]: Start isEmpty. Operand  has 10 states, 8 states have (on average 1.375) internal successors, (11), 9 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-01 13:38:38,127 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 6
[2024-11-01 13:38:38,127 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-01 13:38:38,129 INFO  L215           NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1]
[2024-11-01 13:38:38,130 INFO  L396      AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-01 13:38:38,135 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-01 13:38:38,135 INFO  L85        PathProgramCache]: Analyzing trace with hash 28694789, now seen corresponding path program 1 times
[2024-11-01 13:38:38,142 INFO  L118   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2024-11-01 13:38:38,143 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2104442612]
[2024-11-01 13:38:38,143 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-01 13:38:38,145 INFO  L173          SolverBuilder]: Constructing external solver with command: cvc5 --incremental --print-success --lang smt
[2024-11-01 13:38:38,145 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5
[2024-11-01 13:38:38,148 INFO  L229       MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (exit command is (exit), workingDir is null)
[2024-11-01 13:38:38,149 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (2)] Waiting until timeout for monitored process
[2024-11-01 13:38:38,247 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-01 13:38:38,255 WARN  L253         TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 24 conjuncts are in the unsatisfiable core
[2024-11-01 13:38:38,266 INFO  L278         TraceCheckSpWp]: Computing forward predicates...
[2024-11-01 13:38:38,456 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-01 13:38:38,457 INFO  L311         TraceCheckSpWp]: Computing backward predicates...
[2024-11-01 13:38:38,579 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-01 13:38:38,580 INFO  L136   FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2024-11-01 13:38:38,580 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2104442612]
[2024-11-01 13:38:38,581 INFO  L158   FreeRefinementEngine]: IpTcStrategyModulePreferences [2104442612] provided 2 perfect and 0 imperfect interpolant sequences
[2024-11-01 13:38:38,581 INFO  L185   FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences.
[2024-11-01 13:38:38,582 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6
[2024-11-01 13:38:38,584 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1200051831]
[2024-11-01 13:38:38,584 INFO  L85    oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton
[2024-11-01 13:38:38,587 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2024-11-01 13:38:38,588 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2024-11-01 13:38:38,607 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2024-11-01 13:38:38,608 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30
[2024-11-01 13:38:38,609 INFO  L87              Difference]: Start difference. First operand  has 10 states, 8 states have (on average 1.375) internal successors, (11), 9 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand  has 6 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 6 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-01 13:38:38,686 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-01 13:38:38,687 INFO  L93              Difference]: Finished difference Result 21 states and 28 transitions.
[2024-11-01 13:38:38,690 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2024-11-01 13:38:38,691 INFO  L78                 Accepts]: Start accepts. Automaton has  has 6 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 6 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5
[2024-11-01 13:38:38,691 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-01 13:38:38,697 INFO  L225             Difference]: With dead ends: 21
[2024-11-01 13:38:38,697 INFO  L226             Difference]: Without dead ends: 13
[2024-11-01 13:38:38,700 INFO  L431           NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56
[2024-11-01 13:38:38,702 INFO  L432           NwaCegarLoop]: 4 mSDtfsCounter, 6 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2024-11-01 13:38:38,703 INFO  L433           NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 14 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2024-11-01 13:38:38,718 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 13 states.
[2024-11-01 13:38:38,726 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 12.
[2024-11-01 13:38:38,727 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 12 states, 11 states have (on average 1.0909090909090908) internal successors, (12), 11 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-01 13:38:38,728 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions.
[2024-11-01 13:38:38,729 INFO  L78                 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 5
[2024-11-01 13:38:38,729 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-01 13:38:38,729 INFO  L471      AbstractCegarLoop]: Abstraction has 12 states and 12 transitions.
[2024-11-01 13:38:38,729 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 6 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 6 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-01 13:38:38,729 INFO  L276                IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions.
[2024-11-01 13:38:38,729 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 12
[2024-11-01 13:38:38,729 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-01 13:38:38,730 INFO  L215           NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1]
[2024-11-01 13:38:38,734 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (2)] Ended with exit code 0
[2024-11-01 13:38:38,934 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt
[2024-11-01 13:38:38,935 INFO  L396      AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-01 13:38:38,936 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-01 13:38:38,936 INFO  L85        PathProgramCache]: Analyzing trace with hash 1906115653, now seen corresponding path program 1 times
[2024-11-01 13:38:38,936 INFO  L118   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2024-11-01 13:38:38,936 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [592221295]
[2024-11-01 13:38:38,936 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-01 13:38:38,936 INFO  L173          SolverBuilder]: Constructing external solver with command: cvc5 --incremental --print-success --lang smt
[2024-11-01 13:38:38,936 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5
[2024-11-01 13:38:38,939 INFO  L229       MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (exit command is (exit), workingDir is null)
[2024-11-01 13:38:38,950 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (3)] Waiting until timeout for monitored process
[2024-11-01 13:38:39,039 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-01 13:38:39,048 WARN  L253         TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 56 conjuncts are in the unsatisfiable core
[2024-11-01 13:38:39,060 INFO  L278         TraceCheckSpWp]: Computing forward predicates...
[2024-11-01 13:38:39,592 INFO  L134       CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-01 13:38:39,593 INFO  L311         TraceCheckSpWp]: Computing backward predicates...
[2024-11-01 13:38:42,198 INFO  L134       CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-01 13:38:42,198 INFO  L136   FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2024-11-01 13:38:42,199 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [592221295]
[2024-11-01 13:38:42,199 INFO  L158   FreeRefinementEngine]: IpTcStrategyModulePreferences [592221295] provided 0 perfect and 2 imperfect interpolant sequences
[2024-11-01 13:38:42,199 INFO  L185   FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2024-11-01 13:38:42,199 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 13
[2024-11-01 13:38:42,199 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1055364640]
[2024-11-01 13:38:42,199 INFO  L85    oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2024-11-01 13:38:42,200 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 13 states
[2024-11-01 13:38:42,200 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2024-11-01 13:38:42,201 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants.
[2024-11-01 13:38:42,201 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156
[2024-11-01 13:38:42,201 INFO  L87              Difference]: Start difference. First operand 12 states and 12 transitions. Second operand  has 13 states, 13 states have (on average 1.5384615384615385) internal successors, (20), 13 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-01 13:38:42,847 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-01 13:38:42,847 INFO  L93              Difference]: Finished difference Result 27 states and 30 transitions.
[2024-11-01 13:38:42,848 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. 
[2024-11-01 13:38:42,848 INFO  L78                 Accepts]: Start accepts. Automaton has  has 13 states, 13 states have (on average 1.5384615384615385) internal successors, (20), 13 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11
[2024-11-01 13:38:42,848 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-01 13:38:42,849 INFO  L225             Difference]: With dead ends: 27
[2024-11-01 13:38:42,849 INFO  L226             Difference]: Without dead ends: 25
[2024-11-01 13:38:42,849 INFO  L431           NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=132, Invalid=248, Unknown=0, NotChecked=0, Total=380
[2024-11-01 13:38:42,850 INFO  L432           NwaCegarLoop]: 4 mSDtfsCounter, 13 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2024-11-01 13:38:42,851 INFO  L433           NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 22 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2024-11-01 13:38:42,852 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 25 states.
[2024-11-01 13:38:42,857 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 24.
[2024-11-01 13:38:42,857 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 24 states, 23 states have (on average 1.0434782608695652) internal successors, (24), 23 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-01 13:38:42,858 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 24 transitions.
[2024-11-01 13:38:42,858 INFO  L78                 Accepts]: Start accepts. Automaton has 24 states and 24 transitions. Word has length 11
[2024-11-01 13:38:42,858 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-01 13:38:42,859 INFO  L471      AbstractCegarLoop]: Abstraction has 24 states and 24 transitions.
[2024-11-01 13:38:42,859 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 13 states, 13 states have (on average 1.5384615384615385) internal successors, (20), 13 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-01 13:38:42,859 INFO  L276                IsEmpty]: Start isEmpty. Operand 24 states and 24 transitions.
[2024-11-01 13:38:42,859 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 24
[2024-11-01 13:38:42,859 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-01 13:38:42,860 INFO  L215           NwaCegarLoop]: trace histogram [7, 6, 6, 1, 1, 1, 1]
[2024-11-01 13:38:42,866 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (3)] Ended with exit code 0
[2024-11-01 13:38:43,060 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt
[2024-11-01 13:38:43,062 INFO  L396      AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-01 13:38:43,062 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-01 13:38:43,063 INFO  L85        PathProgramCache]: Analyzing trace with hash 1845955269, now seen corresponding path program 2 times
[2024-11-01 13:38:43,063 INFO  L118   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2024-11-01 13:38:43,063 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1182494941]
[2024-11-01 13:38:43,063 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-01 13:38:43,063 INFO  L173          SolverBuilder]: Constructing external solver with command: cvc5 --incremental --print-success --lang smt
[2024-11-01 13:38:43,063 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5
[2024-11-01 13:38:43,069 INFO  L229       MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (exit command is (exit), workingDir is null)
[2024-11-01 13:38:43,071 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (4)] Waiting until timeout for monitored process
[2024-11-01 13:38:43,218 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-01 13:38:43,232 WARN  L253         TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 121 conjuncts are in the unsatisfiable core
[2024-11-01 13:38:43,273 INFO  L278         TraceCheckSpWp]: Computing forward predicates...
[2024-11-01 13:38:43,949 INFO  L134       CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-01 13:38:43,950 INFO  L311         TraceCheckSpWp]: Computing backward predicates...
[2024-11-01 13:38:56,979 INFO  L134       CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-01 13:38:56,980 INFO  L136   FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2024-11-01 13:38:56,980 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1182494941]
[2024-11-01 13:38:56,980 INFO  L158   FreeRefinementEngine]: IpTcStrategyModulePreferences [1182494941] provided 0 perfect and 2 imperfect interpolant sequences
[2024-11-01 13:38:56,980 INFO  L185   FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2024-11-01 13:38:56,980 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 20] total 33
[2024-11-01 13:38:56,980 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1434046836]
[2024-11-01 13:38:56,980 INFO  L85    oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2024-11-01 13:38:56,981 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 33 states
[2024-11-01 13:38:56,981 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2024-11-01 13:38:56,981 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants.
[2024-11-01 13:38:56,982 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=293, Invalid=763, Unknown=0, NotChecked=0, Total=1056
[2024-11-01 13:38:56,982 INFO  L87              Difference]: Start difference. First operand 24 states and 24 transitions. Second operand  has 33 states, 33 states have (on average 1.3333333333333333) internal successors, (44), 33 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-01 13:39:03,904 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers []
[2024-11-01 13:39:04,965 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.06s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers []
[2024-11-01 13:39:09,104 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers []
[2024-11-01 13:39:13,122 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers []
[2024-11-01 13:39:17,126 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers []
[2024-11-01 13:39:21,133 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers []
[2024-11-01 13:39:25,141 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers []
[2024-11-01 13:39:30,842 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers []
[2024-11-01 13:39:35,595 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.94s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers []
[2024-11-01 13:39:39,605 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers []
[2024-11-01 13:39:43,608 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers []
[2024-11-01 13:39:49,564 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.87s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers []
[2024-11-01 13:39:53,579 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers []
[2024-11-01 13:39:56,043 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-01 13:39:56,044 INFO  L93              Difference]: Finished difference Result 51 states and 58 transitions.
[2024-11-01 13:39:56,044 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. 
[2024-11-01 13:39:56,045 INFO  L78                 Accepts]: Start accepts. Automaton has  has 33 states, 33 states have (on average 1.3333333333333333) internal successors, (44), 33 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23
[2024-11-01 13:39:56,045 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-01 13:39:56,045 INFO  L225             Difference]: With dead ends: 51
[2024-11-01 13:39:56,045 INFO  L226             Difference]: Without dead ends: 49
[2024-11-01 13:39:56,047 INFO  L431           NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 13 SyntacticMatches, 3 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 593 ImplicationChecksByTransitivity, 10.7s TimeCoverageRelationStatistics Valid=702, Invalid=1554, Unknown=0, NotChecked=0, Total=2256
[2024-11-01 13:39:56,048 INFO  L432           NwaCegarLoop]: 4 mSDtfsCounter, 42 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 263 mSolverCounterSat, 27 mSolverCounterUnsat, 10 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 52.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 300 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 263 IncrementalHoareTripleChecker+Invalid, 10 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 52.2s IncrementalHoareTripleChecker+Time
[2024-11-01 13:39:56,048 INFO  L433           NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 54 Invalid, 300 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 263 Invalid, 10 Unknown, 0 Unchecked, 52.2s Time]
[2024-11-01 13:39:56,048 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 49 states.
[2024-11-01 13:39:56,058 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 48.
[2024-11-01 13:39:56,058 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 48 states, 47 states have (on average 1.0212765957446808) internal successors, (48), 47 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-01 13:39:56,059 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 48 transitions.
[2024-11-01 13:39:56,059 INFO  L78                 Accepts]: Start accepts. Automaton has 48 states and 48 transitions. Word has length 23
[2024-11-01 13:39:56,059 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-01 13:39:56,059 INFO  L471      AbstractCegarLoop]: Abstraction has 48 states and 48 transitions.
[2024-11-01 13:39:56,059 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 33 states, 33 states have (on average 1.3333333333333333) internal successors, (44), 33 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-01 13:39:56,060 INFO  L276                IsEmpty]: Start isEmpty. Operand 48 states and 48 transitions.
[2024-11-01 13:39:56,060 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 48
[2024-11-01 13:39:56,060 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-01 13:39:56,060 INFO  L215           NwaCegarLoop]: trace histogram [15, 14, 14, 1, 1, 1, 1]
[2024-11-01 13:39:56,064 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (4)] Forceful destruction successful, exit code 0
[2024-11-01 13:39:56,261 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt
[2024-11-01 13:39:56,262 INFO  L396      AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-01 13:39:56,262 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-01 13:39:56,262 INFO  L85        PathProgramCache]: Analyzing trace with hash -2022058043, now seen corresponding path program 3 times
[2024-11-01 13:39:56,262 INFO  L118   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2024-11-01 13:39:56,262 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [957408639]
[2024-11-01 13:39:56,262 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-01 13:39:56,263 INFO  L173          SolverBuilder]: Constructing external solver with command: cvc5 --incremental --print-success --lang smt
[2024-11-01 13:39:56,263 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5
[2024-11-01 13:39:56,265 INFO  L229       MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (exit command is (exit), workingDir is null)
[2024-11-01 13:39:56,266 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (5)] Waiting until timeout for monitored process
[2024-11-01 13:39:56,532 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-01 13:39:56,575 WARN  L253         TraceCheckSpWp]: Trace formula consists of 263 conjuncts, 249 conjuncts are in the unsatisfiable core
[2024-11-01 13:39:56,593 INFO  L278         TraceCheckSpWp]: Computing forward predicates...
[2024-11-01 13:39:57,971 INFO  L134       CoverageAnalysis]: Checked inductivity of 301 backedges. 0 proven. 301 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-01 13:39:57,972 INFO  L311         TraceCheckSpWp]: Computing backward predicates...