/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.seq.c


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


This is Ultimate 0.2.5-dev-356b6ba-m
[2024-11-01 13:57:13,622 INFO  L188        SettingsManager]: Resetting all preferences to default values...
[2024-11-01 13:57:13,705 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 13:57:13,711 WARN  L101        SettingsManager]: Preference file contains the following unknown settings:
[2024-11-01 13:57:13,711 WARN  L103        SettingsManager]:   * de.uni_freiburg.informatik.ultimate.core.Log level for class
[2024-11-01 13:57:13,756 INFO  L130        SettingsManager]: Preferences different from defaults after loading the file:
[2024-11-01 13:57:13,756 INFO  L151        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2024-11-01 13:57:13,757 INFO  L153        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2024-11-01 13:57:13,757 INFO  L151        SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults:
[2024-11-01 13:57:13,758 INFO  L153        SettingsManager]:  * Use memory slicer=true
[2024-11-01 13:57:13,758 INFO  L151        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2024-11-01 13:57:13,758 INFO  L153        SettingsManager]:  * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2024-11-01 13:57:13,759 INFO  L151        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2024-11-01 13:57:13,759 INFO  L153        SettingsManager]:  * Create parallel compositions if possible=false
[2024-11-01 13:57:13,759 INFO  L153        SettingsManager]:  * Use SBE=true
[2024-11-01 13:57:13,760 INFO  L151        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2024-11-01 13:57:13,760 INFO  L153        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2024-11-01 13:57:13,761 INFO  L153        SettingsManager]:  * Check division by zero=IGNORE
[2024-11-01 13:57:13,761 INFO  L153        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2024-11-01 13:57:13,763 INFO  L153        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2024-11-01 13:57:13,764 INFO  L153        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2024-11-01 13:57:13,764 INFO  L153        SettingsManager]:  * Adapt memory model on pointer casts if necessary=true
[2024-11-01 13:57:13,764 INFO  L153        SettingsManager]:  * Use bitvectors instead of ints=true
[2024-11-01 13:57:13,765 INFO  L153        SettingsManager]:  * Allow undefined functions=false
[2024-11-01 13:57:13,765 INFO  L153        SettingsManager]:  * Memory model=HoenickeLindenmann_4ByteResolution
[2024-11-01 13:57:13,765 INFO  L153        SettingsManager]:  * Check if freed pointer was valid=false
[2024-11-01 13:57:13,766 INFO  L153        SettingsManager]:  * Use constant arrays=true
[2024-11-01 13:57:13,766 INFO  L151        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2024-11-01 13:57:13,766 INFO  L153        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2024-11-01 13:57:13,766 INFO  L153        SettingsManager]:  * Only consider context switches at boundaries of atomic blocks=true
[2024-11-01 13:57:13,767 INFO  L153        SettingsManager]:  * SMT solver=External_DefaultMode
[2024-11-01 13:57:13,770 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2024-11-01 13:57:13,771 INFO  L151        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2024-11-01 13:57:13,771 INFO  L153        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2024-11-01 13:57:13,771 INFO  L153        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopHeads
[2024-11-01 13:57:13,771 INFO  L153        SettingsManager]:  * Trace refinement strategy=WOLF
[2024-11-01 13:57:13,772 INFO  L153        SettingsManager]:  * Command for external solver=cvc4 --incremental --print-success --lang smt 
[2024-11-01 13:57:13,772 INFO  L153        SettingsManager]:  * Apply one-shot large block encoding in concurrent analysis=false
[2024-11-01 13:57:13,772 INFO  L153        SettingsManager]:  * Automaton type used in concurrency analysis=PETRI_NET
[2024-11-01 13:57:13,772 INFO  L153        SettingsManager]:  * Order on configurations for Petri net unfoldings=DBO
[2024-11-01 13:57:13,773 INFO  L153        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2024-11-01 13:57:13,773 INFO  L153        SettingsManager]:  * Logic for external solver=AUFBV
[2024-11-01 13:57:13,773 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$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Allow undefined functions -> true
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> External_ModelsAndUnsatCoreMode
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Command for external solver -> cvc5 --incremental --print-success --lang smt
[2024-11-01 13:57:14,092 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2024-11-01 13:57:14,111 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2024-11-01 13:57:14,113 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2024-11-01 13:57:14,114 INFO  L270        PluginConnector]: Initializing CDTParser...
[2024-11-01 13:57:14,114 INFO  L274        PluginConnector]: CDTParser initialized
[2024-11-01 13:57:14,115 INFO  L431   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.seq.c
[2024-11-01 13:57:15,556 INFO  L533              CDTParser]: Created temporary CDT project at NULL
[2024-11-01 13:57:15,762 INFO  L384              CDTParser]: Found 1 translation units.
[2024-11-01 13:57:15,763 INFO  L180              CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.seq.c
[2024-11-01 13:57:15,771 INFO  L427              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3f6abbbc6/e2a903e6e5fe45799f1219a7e0c43c73/FLAG5badec9b1
[2024-11-01 13:57:15,783 INFO  L435              CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3f6abbbc6/e2a903e6e5fe45799f1219a7e0c43c73
[2024-11-01 13:57:15,785 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2024-11-01 13:57:15,786 INFO  L133        ToolchainWalker]: Walking toolchain with 5 elements.
[2024-11-01 13:57:15,787 INFO  L112        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2024-11-01 13:57:15,787 INFO  L270        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2024-11-01 13:57:15,792 INFO  L274        PluginConnector]: CACSL2BoogieTranslator initialized
[2024-11-01 13:57:15,793 INFO  L184        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.11 01:57:15" (1/1) ...
[2024-11-01 13:57:15,793 INFO  L204        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@119cd295 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 01:57:15, skipping insertion in model container
[2024-11-01 13:57:15,794 INFO  L184        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.11 01:57:15" (1/1) ...
[2024-11-01 13:57:15,818 INFO  L175         MainTranslator]: Built tables and reachable declarations
[2024-11-01 13:57:16,003 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.seq.c[1297,1310]
[2024-11-01 13:57:16,041 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2024-11-01 13:57:16,058 INFO  L200         MainTranslator]: Completed pre-run
[2024-11-01 13:57:16,070 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.seq.c[1297,1310]
[2024-11-01 13:57:16,085 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2024-11-01 13:57:16,105 INFO  L204         MainTranslator]: Completed translation
[2024-11-01 13:57:16,106 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 01:57:16 WrapperNode
[2024-11-01 13:57:16,106 INFO  L131        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2024-11-01 13:57:16,107 INFO  L112        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2024-11-01 13:57:16,107 INFO  L270        PluginConnector]: Initializing Boogie Procedure Inliner...
[2024-11-01 13:57:16,108 INFO  L274        PluginConnector]: Boogie Procedure Inliner initialized
[2024-11-01 13:57:16,115 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 01:57:16" (1/1) ...
[2024-11-01 13:57:16,125 INFO  L184        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 01:57:16" (1/1) ...
[2024-11-01 13:57:16,151 INFO  L138                Inliner]: procedures = 18, calls = 14, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 86
[2024-11-01 13:57:16,151 INFO  L131        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2024-11-01 13:57:16,153 INFO  L112        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2024-11-01 13:57:16,153 INFO  L270        PluginConnector]: Initializing Boogie Preprocessor...
[2024-11-01 13:57:16,153 INFO  L274        PluginConnector]: Boogie Preprocessor initialized
[2024-11-01 13:57:16,163 INFO  L184        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 01:57:16" (1/1) ...
[2024-11-01 13:57:16,164 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 01:57:16" (1/1) ...
[2024-11-01 13:57:16,166 INFO  L184        PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 01:57:16" (1/1) ...
[2024-11-01 13:57:16,181 INFO  L175           MemorySlicer]: Split 8 memory accesses to 2 slices as follows [2, 6]. 75 percent of accesses are in the largest equivalence class. The 8 initializations are split as follows [2, 6]. The 0 writes are split as follows [0, 0].
[2024-11-01 13:57:16,181 INFO  L184        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 01:57:16" (1/1) ...
[2024-11-01 13:57:16,181 INFO  L184        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 01:57:16" (1/1) ...
[2024-11-01 13:57:16,196 INFO  L184        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 01:57:16" (1/1) ...
[2024-11-01 13:57:16,203 INFO  L184        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 01:57:16" (1/1) ...
[2024-11-01 13:57:16,204 INFO  L184        PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 01:57:16" (1/1) ...
[2024-11-01 13:57:16,205 INFO  L184        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 01:57:16" (1/1) ...
[2024-11-01 13:57:16,207 INFO  L131        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2024-11-01 13:57:16,208 INFO  L112        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2024-11-01 13:57:16,208 INFO  L270        PluginConnector]: Initializing RCFGBuilder...
[2024-11-01 13:57:16,209 INFO  L274        PluginConnector]: RCFGBuilder initialized
[2024-11-01 13:57:16,211 INFO  L184        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 01:57:16" (1/1) ...
[2024-11-01 13:57:16,217 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2024-11-01 13:57:16,227 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2024-11-01 13:57:16,241 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 13:57:16,247 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 13:57:16,278 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2024-11-01 13:57:16,278 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0
[2024-11-01 13:57:16,279 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1
[2024-11-01 13:57:16,279 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2024-11-01 13:57:16,279 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2024-11-01 13:57:16,373 INFO  L238             CfgBuilder]: Building ICFG
[2024-11-01 13:57:16,375 INFO  L264             CfgBuilder]: Building CFG for each procedure with an implementation
[2024-11-01 13:57:16,563 INFO  L?                        ?]: Removed 23 outVars from TransFormulas that were not future-live.
[2024-11-01 13:57:16,563 INFO  L287             CfgBuilder]: Performing block encoding
[2024-11-01 13:57:16,577 INFO  L311             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2024-11-01 13:57:16,578 INFO  L316             CfgBuilder]: Removed 1 assume(true) statements.
[2024-11-01 13:57:16,583 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.11 01:57:16 BoogieIcfgContainer
[2024-11-01 13:57:16,584 INFO  L131        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2024-11-01 13:57:16,586 INFO  L112        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2024-11-01 13:57:16,586 INFO  L270        PluginConnector]: Initializing TraceAbstraction...
[2024-11-01 13:57:16,595 INFO  L274        PluginConnector]: TraceAbstraction initialized
[2024-11-01 13:57:16,595 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.11 01:57:15" (1/3) ...
[2024-11-01 13:57:16,596 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b3e3c66 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.11 01:57:16, skipping insertion in model container
[2024-11-01 13:57:16,596 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 01:57:16" (2/3) ...
[2024-11-01 13:57:16,599 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b3e3c66 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.11 01:57:16, skipping insertion in model container
[2024-11-01 13:57:16,599 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.11 01:57:16" (3/3) ...
[2024-11-01 13:57:16,601 INFO  L112   eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.seq.c
[2024-11-01 13:57:16,618 INFO  L214   ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2024-11-01 13:57:16,619 INFO  L154   ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2024-11-01 13:57:16,682 INFO  L332      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2024-11-01 13:57:16,689 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;@2ae73d17, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2024-11-01 13:57:16,689 INFO  L334      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2024-11-01 13:57:16,694 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 13:57:16,700 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 6
[2024-11-01 13:57:16,701 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-01 13:57:16,702 INFO  L215           NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1]
[2024-11-01 13:57:16,703 INFO  L396      AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-01 13:57:16,708 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-01 13:57:16,708 INFO  L85        PathProgramCache]: Analyzing trace with hash 28694789, now seen corresponding path program 1 times
[2024-11-01 13:57:16,717 INFO  L118   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2024-11-01 13:57:16,718 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [58234623]
[2024-11-01 13:57:16,718 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-01 13:57:16,721 INFO  L173          SolverBuilder]: Constructing external solver with command: cvc5 --incremental --print-success --lang smt
[2024-11-01 13:57:16,721 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5
[2024-11-01 13:57:16,725 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 13:57:16,727 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 13:57:16,890 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-01 13:57:16,898 WARN  L253         TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 29 conjuncts are in the unsatisfiable core
[2024-11-01 13:57:16,915 INFO  L278         TraceCheckSpWp]: Computing forward predicates...
[2024-11-01 13:57:17,184 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 13:57:17,184 INFO  L311         TraceCheckSpWp]: Computing backward predicates...
[2024-11-01 13:57:17,364 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 13:57:17,366 INFO  L136   FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2024-11-01 13:57:17,366 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [58234623]
[2024-11-01 13:57:17,366 INFO  L158   FreeRefinementEngine]: IpTcStrategyModulePreferences [58234623] provided 2 perfect and 0 imperfect interpolant sequences
[2024-11-01 13:57:17,367 INFO  L185   FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences.
[2024-11-01 13:57:17,367 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6
[2024-11-01 13:57:17,370 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1730672268]
[2024-11-01 13:57:17,370 INFO  L85    oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton
[2024-11-01 13:57:17,374 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2024-11-01 13:57:17,375 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2024-11-01 13:57:17,399 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2024-11-01 13:57:17,400 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30
[2024-11-01 13:57:17,402 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 13:57:17,471 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-01 13:57:17,472 INFO  L93              Difference]: Finished difference Result 18 states and 23 transitions.
[2024-11-01 13:57:17,474 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2024-11-01 13:57:17,475 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 13:57:17,475 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-01 13:57:17,481 INFO  L225             Difference]: With dead ends: 18
[2024-11-01 13:57:17,482 INFO  L226             Difference]: Without dead ends: 10
[2024-11-01 13:57:17,485 INFO  L431           NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42
[2024-11-01 13:57:17,489 INFO  L432           NwaCegarLoop]: 4 mSDtfsCounter, 4 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2024-11-01 13:57:17,490 INFO  L433           NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 14 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2024-11-01 13:57:17,504 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 10 states.
[2024-11-01 13:57:17,524 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 9.
[2024-11-01 13:57:17,526 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 9 states, 8 states have (on average 1.125) internal successors, (9), 8 states have internal predecessors, (9), 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 13:57:17,526 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions.
[2024-11-01 13:57:17,529 INFO  L78                 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 5
[2024-11-01 13:57:17,529 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-01 13:57:17,529 INFO  L471      AbstractCegarLoop]: Abstraction has 9 states and 9 transitions.
[2024-11-01 13:57:17,529 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 13:57:17,530 INFO  L276                IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions.
[2024-11-01 13:57:17,530 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 9
[2024-11-01 13:57:17,530 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-01 13:57:17,530 INFO  L215           NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1]
[2024-11-01 13:57:17,534 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 13:57:17,732 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 13:57:17,733 INFO  L396      AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-01 13:57:17,734 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-01 13:57:17,734 INFO  L85        PathProgramCache]: Analyzing trace with hash 152739811, now seen corresponding path program 1 times
[2024-11-01 13:57:17,734 INFO  L118   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2024-11-01 13:57:17,734 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1966270601]
[2024-11-01 13:57:17,735 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-01 13:57:17,735 INFO  L173          SolverBuilder]: Constructing external solver with command: cvc5 --incremental --print-success --lang smt
[2024-11-01 13:57:17,735 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5
[2024-11-01 13:57:17,738 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 13:57:17,740 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 13:57:17,850 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-01 13:57:17,858 WARN  L253         TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 60 conjuncts are in the unsatisfiable core
[2024-11-01 13:57:17,868 INFO  L278         TraceCheckSpWp]: Computing forward predicates...
[2024-11-01 13:57:18,408 INFO  L134       CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-01 13:57:18,409 INFO  L311         TraceCheckSpWp]: Computing backward predicates...
[2024-11-01 13:57:19,167 INFO  L134       CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-01 13:57:19,167 INFO  L136   FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2024-11-01 13:57:19,167 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1966270601]
[2024-11-01 13:57:19,168 INFO  L158   FreeRefinementEngine]: IpTcStrategyModulePreferences [1966270601] provided 0 perfect and 2 imperfect interpolant sequences
[2024-11-01 13:57:19,168 INFO  L185   FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2024-11-01 13:57:19,168 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7] total 11
[2024-11-01 13:57:19,168 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1959225131]
[2024-11-01 13:57:19,168 INFO  L85    oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2024-11-01 13:57:19,169 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 11 states
[2024-11-01 13:57:19,169 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2024-11-01 13:57:19,170 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants.
[2024-11-01 13:57:19,170 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110
[2024-11-01 13:57:19,171 INFO  L87              Difference]: Start difference. First operand 9 states and 9 transitions. Second operand  has 11 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 11 states have internal predecessors, (14), 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 13:57:19,499 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-01 13:57:19,500 INFO  L93              Difference]: Finished difference Result 18 states and 19 transitions.
[2024-11-01 13:57:19,501 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. 
[2024-11-01 13:57:19,501 INFO  L78                 Accepts]: Start accepts. Automaton has  has 11 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 11 states have internal predecessors, (14), 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 8
[2024-11-01 13:57:19,502 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-01 13:57:19,502 INFO  L225             Difference]: With dead ends: 18
[2024-11-01 13:57:19,502 INFO  L226             Difference]: Without dead ends: 16
[2024-11-01 13:57:19,503 INFO  L431           NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182
[2024-11-01 13:57:19,504 INFO  L432           NwaCegarLoop]: 4 mSDtfsCounter, 7 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2024-11-01 13:57:19,504 INFO  L433           NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 19 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2024-11-01 13:57:19,505 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 16 states.
[2024-11-01 13:57:19,508 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 15.
[2024-11-01 13:57:19,508 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 15 states, 14 states have (on average 1.0714285714285714) internal successors, (15), 14 states have internal predecessors, (15), 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 13:57:19,509 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions.
[2024-11-01 13:57:19,509 INFO  L78                 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 8
[2024-11-01 13:57:19,509 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-01 13:57:19,509 INFO  L471      AbstractCegarLoop]: Abstraction has 15 states and 15 transitions.
[2024-11-01 13:57:19,509 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 11 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 11 states have internal predecessors, (14), 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 13:57:19,510 INFO  L276                IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions.
[2024-11-01 13:57:19,510 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 15
[2024-11-01 13:57:19,510 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-01 13:57:19,510 INFO  L215           NwaCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1]
[2024-11-01 13:57:19,513 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 13:57:19,711 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 13:57:19,712 INFO  L396      AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-01 13:57:19,712 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-01 13:57:19,712 INFO  L85        PathProgramCache]: Analyzing trace with hash 1333570723, now seen corresponding path program 2 times
[2024-11-01 13:57:19,712 INFO  L118   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2024-11-01 13:57:19,713 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1080078720]
[2024-11-01 13:57:19,713 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-01 13:57:19,713 INFO  L173          SolverBuilder]: Constructing external solver with command: cvc5 --incremental --print-success --lang smt
[2024-11-01 13:57:19,713 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5
[2024-11-01 13:57:19,716 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 13:57:19,718 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 13:57:19,833 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-01 13:57:19,840 WARN  L253         TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 75 conjuncts are in the unsatisfiable core
[2024-11-01 13:57:19,859 INFO  L278         TraceCheckSpWp]: Computing forward predicates...
[2024-11-01 13:57:20,487 INFO  L134       CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-01 13:57:20,488 INFO  L311         TraceCheckSpWp]: Computing backward predicates...
[2024-11-01 13:57:23,198 INFO  L134       CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-01 13:57:23,198 INFO  L136   FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2024-11-01 13:57:23,199 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1080078720]
[2024-11-01 13:57:23,199 INFO  L158   FreeRefinementEngine]: IpTcStrategyModulePreferences [1080078720] provided 0 perfect and 2 imperfect interpolant sequences
[2024-11-01 13:57:23,199 INFO  L185   FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2024-11-01 13:57:23,199 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 15
[2024-11-01 13:57:23,199 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1761854169]
[2024-11-01 13:57:23,199 INFO  L85    oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2024-11-01 13:57:23,200 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 15 states
[2024-11-01 13:57:23,200 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2024-11-01 13:57:23,201 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants.
[2024-11-01 13:57:23,201 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=152, Unknown=0, NotChecked=0, Total=210
[2024-11-01 13:57:23,201 INFO  L87              Difference]: Start difference. First operand 15 states and 15 transitions. Second operand  has 15 states, 15 states have (on average 1.7333333333333334) internal successors, (26), 15 states have internal predecessors, (26), 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 13:57:25,507 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-01 13:57:25,508 INFO  L93              Difference]: Finished difference Result 30 states and 33 transitions.
[2024-11-01 13:57:25,508 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. 
[2024-11-01 13:57:25,508 INFO  L78                 Accepts]: Start accepts. Automaton has  has 15 states, 15 states have (on average 1.7333333333333334) internal successors, (26), 15 states have internal predecessors, (26), 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 14
[2024-11-01 13:57:25,509 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-01 13:57:25,509 INFO  L225             Difference]: With dead ends: 30
[2024-11-01 13:57:25,509 INFO  L226             Difference]: Without dead ends: 28
[2024-11-01 13:57:25,510 INFO  L431           NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=171, Invalid=381, Unknown=0, NotChecked=0, Total=552
[2024-11-01 13:57:25,510 INFO  L432           NwaCegarLoop]: 4 mSDtfsCounter, 14 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 95 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 95 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time
[2024-11-01 13:57:25,511 INFO  L433           NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 28 Invalid, 104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 95 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time]
[2024-11-01 13:57:25,511 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 28 states.
[2024-11-01 13:57:25,516 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 27.
[2024-11-01 13:57:25,517 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 27 states, 26 states have (on average 1.0384615384615385) internal successors, (27), 26 states have internal predecessors, (27), 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 13:57:25,517 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 27 transitions.
[2024-11-01 13:57:25,517 INFO  L78                 Accepts]: Start accepts. Automaton has 27 states and 27 transitions. Word has length 14
[2024-11-01 13:57:25,517 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-01 13:57:25,518 INFO  L471      AbstractCegarLoop]: Abstraction has 27 states and 27 transitions.
[2024-11-01 13:57:25,518 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 15 states, 15 states have (on average 1.7333333333333334) internal successors, (26), 15 states have internal predecessors, (26), 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 13:57:25,518 INFO  L276                IsEmpty]: Start isEmpty. Operand 27 states and 27 transitions.
[2024-11-01 13:57:25,518 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 27
[2024-11-01 13:57:25,518 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-01 13:57:25,518 INFO  L215           NwaCegarLoop]: trace histogram [8, 7, 7, 1, 1, 1, 1]
[2024-11-01 13:57:25,521 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (4)] Ended with exit code 0
[2024-11-01 13:57:25,719 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 13:57:25,719 INFO  L396      AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-01 13:57:25,720 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-01 13:57:25,720 INFO  L85        PathProgramCache]: Analyzing trace with hash 96933411, now seen corresponding path program 3 times
[2024-11-01 13:57:25,720 INFO  L118   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2024-11-01 13:57:25,720 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1959558892]
[2024-11-01 13:57:25,721 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-01 13:57:25,721 INFO  L173          SolverBuilder]: Constructing external solver with command: cvc5 --incremental --print-success --lang smt
[2024-11-01 13:57:25,721 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5
[2024-11-01 13:57:25,724 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 13:57:25,725 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 13:57:25,889 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-01 13:57:25,900 WARN  L253         TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 135 conjuncts are in the unsatisfiable core
[2024-11-01 13:57:25,916 INFO  L278         TraceCheckSpWp]: Computing forward predicates...
[2024-11-01 13:57:27,087 INFO  L134       CoverageAnalysis]: Checked inductivity of 77 backedges. 0 proven. 77 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-01 13:57:27,088 INFO  L311         TraceCheckSpWp]: Computing backward predicates...
[2024-11-01 13:57:47,411 INFO  L134       CoverageAnalysis]: Checked inductivity of 77 backedges. 0 proven. 77 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-01 13:57:47,411 INFO  L136   FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2024-11-01 13:57:47,412 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1959558892]
[2024-11-01 13:57:47,412 INFO  L158   FreeRefinementEngine]: IpTcStrategyModulePreferences [1959558892] provided 0 perfect and 2 imperfect interpolant sequences
[2024-11-01 13:57:47,412 INFO  L185   FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2024-11-01 13:57:47,412 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13] total 23
[2024-11-01 13:57:47,412 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1838641632]
[2024-11-01 13:57:47,413 INFO  L85    oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2024-11-01 13:57:47,413 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 23 states
[2024-11-01 13:57:47,413 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2024-11-01 13:57:47,414 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants.
[2024-11-01 13:57:47,414 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=130, Invalid=376, Unknown=0, NotChecked=0, Total=506
[2024-11-01 13:57:47,415 INFO  L87              Difference]: Start difference. First operand 27 states and 27 transitions. Second operand  has 23 states, 23 states have (on average 2.1739130434782608) internal successors, (50), 23 states have internal predecessors, (50), 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 13:58:04,996 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.25s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers []
[2024-11-01 13:58:13,754 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.20s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers []
[2024-11-01 13:58:27,731 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-01 13:58:27,731 INFO  L93              Difference]: Finished difference Result 54 states and 61 transitions.
[2024-11-01 13:58:27,733 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. 
[2024-11-01 13:58:27,734 INFO  L78                 Accepts]: Start accepts. Automaton has  has 23 states, 23 states have (on average 2.1739130434782608) internal successors, (50), 23 states have internal predecessors, (50), 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 26
[2024-11-01 13:58:27,734 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-01 13:58:27,735 INFO  L225             Difference]: With dead ends: 54
[2024-11-01 13:58:27,735 INFO  L226             Difference]: Without dead ends: 52
[2024-11-01 13:58:27,736 INFO  L431           NwaCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 341 ImplicationChecksByTransitivity, 44.5s TimeCoverageRelationStatistics Valid=577, Invalid=1315, Unknown=0, NotChecked=0, Total=1892
[2024-11-01 13:58:27,737 INFO  L432           NwaCegarLoop]: 4 mSDtfsCounter, 30 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 246 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 267 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 246 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.4s IncrementalHoareTripleChecker+Time
[2024-11-01 13:58:27,738 INFO  L433           NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 37 Invalid, 267 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 246 Invalid, 0 Unknown, 0 Unchecked, 7.4s Time]
[2024-11-01 13:58:27,738 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 52 states.
[2024-11-01 13:58:27,747 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 51.
[2024-11-01 13:58:27,748 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 51 states, 50 states have (on average 1.02) internal successors, (51), 50 states have internal predecessors, (51), 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 13:58:27,748 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 51 transitions.
[2024-11-01 13:58:27,749 INFO  L78                 Accepts]: Start accepts. Automaton has 51 states and 51 transitions. Word has length 26
[2024-11-01 13:58:27,749 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-01 13:58:27,749 INFO  L471      AbstractCegarLoop]: Abstraction has 51 states and 51 transitions.
[2024-11-01 13:58:27,749 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 23 states, 23 states have (on average 2.1739130434782608) internal successors, (50), 23 states have internal predecessors, (50), 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 13:58:27,749 INFO  L276                IsEmpty]: Start isEmpty. Operand 51 states and 51 transitions.
[2024-11-01 13:58:27,750 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 51
[2024-11-01 13:58:27,750 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-01 13:58:27,751 INFO  L215           NwaCegarLoop]: trace histogram [16, 15, 15, 1, 1, 1, 1]
[2024-11-01 13:58:27,755 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (5)] Ended with exit code 0
[2024-11-01 13:58:27,951 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt
[2024-11-01 13:58:27,952 INFO  L396      AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-01 13:58:27,952 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-01 13:58:27,952 INFO  L85        PathProgramCache]: Analyzing trace with hash 2084907299, now seen corresponding path program 4 times
[2024-11-01 13:58:27,952 INFO  L118   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2024-11-01 13:58:27,953 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [10295388]
[2024-11-01 13:58:27,953 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-01 13:58:27,953 INFO  L173          SolverBuilder]: Constructing external solver with command: cvc5 --incremental --print-success --lang smt
[2024-11-01 13:58:27,953 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5
[2024-11-01 13:58:27,955 INFO  L229       MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (exit command is (exit), workingDir is null)
[2024-11-01 13:58:27,956 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (6)] Waiting until timeout for monitored process
[2024-11-01 13:58:28,293 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-01 13:58:28,328 WARN  L253         TraceCheckSpWp]: Trace formula consists of 288 conjuncts, 257 conjuncts are in the unsatisfiable core
[2024-11-01 13:58:28,353 INFO  L278         TraceCheckSpWp]: Computing forward predicates...
[2024-11-01 13:58:30,791 INFO  L134       CoverageAnalysis]: Checked inductivity of 345 backedges. 0 proven. 336 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked.
[2024-11-01 13:58:30,791 INFO  L311         TraceCheckSpWp]: Computing backward predicates...