/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --cacsl2boogietranslator.allow.undefined.functions true --traceabstraction.smt.solver External_ModelsAndUnsatCoreMode --traceabstraction.command.for.external.solver 'cvc4 --incremental --print-success --lang smt' -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf -i ../../../trunk/examples/svcomp/bitvector/jain_5-2.c


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


This is Ultimate 0.2.5-dev-356b6ba-m
[2024-10-31 19:31:16,998 INFO  L188        SettingsManager]: Resetting all preferences to default values...
[2024-10-31 19:31:17,075 INFO  L114        SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf
[2024-10-31 19:31:17,082 WARN  L101        SettingsManager]: Preference file contains the following unknown settings:
[2024-10-31 19:31:17,083 WARN  L103        SettingsManager]:   * de.uni_freiburg.informatik.ultimate.core.Log level for class
[2024-10-31 19:31:17,127 INFO  L130        SettingsManager]: Preferences different from defaults after loading the file:
[2024-10-31 19:31:17,127 INFO  L151        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2024-10-31 19:31:17,128 INFO  L153        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2024-10-31 19:31:17,128 INFO  L151        SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults:
[2024-10-31 19:31:17,129 INFO  L153        SettingsManager]:  * Use memory slicer=true
[2024-10-31 19:31:17,129 INFO  L151        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2024-10-31 19:31:17,131 INFO  L153        SettingsManager]:  * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2024-10-31 19:31:17,131 INFO  L151        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2024-10-31 19:31:17,133 INFO  L153        SettingsManager]:  * Create parallel compositions if possible=false
[2024-10-31 19:31:17,133 INFO  L153        SettingsManager]:  * Use SBE=true
[2024-10-31 19:31:17,133 INFO  L151        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2024-10-31 19:31:17,134 INFO  L153        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2024-10-31 19:31:17,134 INFO  L153        SettingsManager]:  * sizeof long=4
[2024-10-31 19:31:17,134 INFO  L153        SettingsManager]:  * sizeof POINTER=4
[2024-10-31 19:31:17,135 INFO  L153        SettingsManager]:  * Check division by zero=IGNORE
[2024-10-31 19:31:17,135 INFO  L153        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2024-10-31 19:31:17,135 INFO  L153        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2024-10-31 19:31:17,135 INFO  L153        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2024-10-31 19:31:17,136 INFO  L153        SettingsManager]:  * Adapt memory model on pointer casts if necessary=true
[2024-10-31 19:31:17,136 INFO  L153        SettingsManager]:  * Use bitvectors instead of ints=true
[2024-10-31 19:31:17,136 INFO  L153        SettingsManager]:  * Allow undefined functions=false
[2024-10-31 19:31:17,136 INFO  L153        SettingsManager]:  * Memory model=HoenickeLindenmann_4ByteResolution
[2024-10-31 19:31:17,137 INFO  L153        SettingsManager]:  * sizeof long double=12
[2024-10-31 19:31:17,137 INFO  L153        SettingsManager]:  * Check if freed pointer was valid=false
[2024-10-31 19:31:17,137 INFO  L153        SettingsManager]:  * Use constant arrays=true
[2024-10-31 19:31:17,137 INFO  L151        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2024-10-31 19:31:17,138 INFO  L153        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2024-10-31 19:31:17,138 INFO  L153        SettingsManager]:  * Only consider context switches at boundaries of atomic blocks=true
[2024-10-31 19:31:17,138 INFO  L153        SettingsManager]:  * SMT solver=External_DefaultMode
[2024-10-31 19:31:17,138 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2024-10-31 19:31:17,139 INFO  L151        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2024-10-31 19:31:17,139 INFO  L153        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2024-10-31 19:31:17,139 INFO  L153        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopHeads
[2024-10-31 19:31:17,139 INFO  L153        SettingsManager]:  * Trace refinement strategy=WOLF
[2024-10-31 19:31:17,140 INFO  L153        SettingsManager]:  * Command for external solver=cvc4 --incremental --print-success --lang smt
[2024-10-31 19:31:17,140 INFO  L153        SettingsManager]:  * Apply one-shot large block encoding in concurrent analysis=false
[2024-10-31 19:31:17,140 INFO  L153        SettingsManager]:  * Automaton type used in concurrency analysis=PETRI_NET
[2024-10-31 19:31:17,141 INFO  L153        SettingsManager]:  * Order on configurations for Petri net unfoldings=DBO
[2024-10-31 19:31:17,141 INFO  L153        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2024-10-31 19:31:17,141 INFO  L153        SettingsManager]:  * Logic for external solver=AUFBV
[2024-10-31 19:31:17,141 INFO  L153        SettingsManager]:  * Looper check in Petri net analysis=SEMANTIC
WARNING: An illegal reflective access operation has occurred
WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int)
WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Allow undefined functions -> true
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> External_ModelsAndUnsatCoreMode
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Command for external solver -> cvc4 --incremental --print-success --lang smt
[2024-10-31 19:31:17,462 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2024-10-31 19:31:17,485 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2024-10-31 19:31:17,488 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2024-10-31 19:31:17,489 INFO  L270        PluginConnector]: Initializing CDTParser...
[2024-10-31 19:31:17,489 INFO  L274        PluginConnector]: CDTParser initialized
[2024-10-31 19:31:17,490 INFO  L431   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/bitvector/jain_5-2.c
[2024-10-31 19:31:18,972 INFO  L533              CDTParser]: Created temporary CDT project at NULL
[2024-10-31 19:31:19,161 INFO  L384              CDTParser]: Found 1 translation units.
[2024-10-31 19:31:19,161 INFO  L180              CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/bitvector/jain_5-2.c
[2024-10-31 19:31:19,168 INFO  L427              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/027a98d8c/21856292c61342feafc7af546d5c0427/FLAG486e42682
[2024-10-31 19:31:19,182 INFO  L435              CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/027a98d8c/21856292c61342feafc7af546d5c0427
[2024-10-31 19:31:19,184 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2024-10-31 19:31:19,185 INFO  L133        ToolchainWalker]: Walking toolchain with 5 elements.
[2024-10-31 19:31:19,186 INFO  L112        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2024-10-31 19:31:19,187 INFO  L270        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2024-10-31 19:31:19,193 INFO  L274        PluginConnector]: CACSL2BoogieTranslator initialized
[2024-10-31 19:31:19,194 INFO  L184        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.10 07:31:19" (1/1) ...
[2024-10-31 19:31:19,194 INFO  L204        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@8745260 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 07:31:19, skipping insertion in model container
[2024-10-31 19:31:19,195 INFO  L184        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.10 07:31:19" (1/1) ...
[2024-10-31 19:31:19,213 INFO  L175         MainTranslator]: Built tables and reachable declarations
[2024-10-31 19:31:19,373 WARN  L251   ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/bitvector/jain_5-2.c[665,678]
[2024-10-31 19:31:19,381 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2024-10-31 19:31:19,394 INFO  L200         MainTranslator]: Completed pre-run
[2024-10-31 19:31:19,404 WARN  L251   ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/bitvector/jain_5-2.c[665,678]
[2024-10-31 19:31:19,407 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2024-10-31 19:31:19,423 INFO  L204         MainTranslator]: Completed translation
[2024-10-31 19:31:19,423 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 07:31:19 WrapperNode
[2024-10-31 19:31:19,423 INFO  L131        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2024-10-31 19:31:19,425 INFO  L112        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2024-10-31 19:31:19,425 INFO  L270        PluginConnector]: Initializing Boogie Procedure Inliner...
[2024-10-31 19:31:19,425 INFO  L274        PluginConnector]: Boogie Procedure Inliner initialized
[2024-10-31 19:31:19,430 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 07:31:19" (1/1) ...
[2024-10-31 19:31:19,436 INFO  L184        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 07:31:19" (1/1) ...
[2024-10-31 19:31:19,449 INFO  L138                Inliner]: procedures = 13, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 28
[2024-10-31 19:31:19,449 INFO  L131        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2024-10-31 19:31:19,450 INFO  L112        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2024-10-31 19:31:19,450 INFO  L270        PluginConnector]: Initializing Boogie Preprocessor...
[2024-10-31 19:31:19,451 INFO  L274        PluginConnector]: Boogie Preprocessor initialized
[2024-10-31 19:31:19,459 INFO  L184        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 07:31:19" (1/1) ...
[2024-10-31 19:31:19,459 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 07:31:19" (1/1) ...
[2024-10-31 19:31:19,461 INFO  L184        PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 07:31:19" (1/1) ...
[2024-10-31 19:31:19,471 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].
[2024-10-31 19:31:19,472 INFO  L184        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 07:31:19" (1/1) ...
[2024-10-31 19:31:19,472 INFO  L184        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 07:31:19" (1/1) ...
[2024-10-31 19:31:19,476 INFO  L184        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 07:31:19" (1/1) ...
[2024-10-31 19:31:19,480 INFO  L184        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 07:31:19" (1/1) ...
[2024-10-31 19:31:19,484 INFO  L184        PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 07:31:19" (1/1) ...
[2024-10-31 19:31:19,485 INFO  L184        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 07:31:19" (1/1) ...
[2024-10-31 19:31:19,486 INFO  L131        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2024-10-31 19:31:19,487 INFO  L112        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2024-10-31 19:31:19,487 INFO  L270        PluginConnector]: Initializing RCFGBuilder...
[2024-10-31 19:31:19,487 INFO  L274        PluginConnector]: RCFGBuilder initialized
[2024-10-31 19:31:19,488 INFO  L184        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 07:31:19" (1/1) ...
[2024-10-31 19:31:19,493 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2024-10-31 19:31:19,502 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2024-10-31 19:31:19,513 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)
[2024-10-31 19:31:19,516 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
[2024-10-31 19:31:19,534 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2024-10-31 19:31:19,534 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2024-10-31 19:31:19,534 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2024-10-31 19:31:19,534 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0
[2024-10-31 19:31:19,585 INFO  L238             CfgBuilder]: Building ICFG
[2024-10-31 19:31:19,587 INFO  L264             CfgBuilder]: Building CFG for each procedure with an implementation
[2024-10-31 19:31:19,685 INFO  L?                        ?]: Removed 5 outVars from TransFormulas that were not future-live.
[2024-10-31 19:31:19,686 INFO  L287             CfgBuilder]: Performing block encoding
[2024-10-31 19:31:19,696 INFO  L311             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2024-10-31 19:31:19,696 INFO  L316             CfgBuilder]: Removed 1 assume(true) statements.
[2024-10-31 19:31:19,697 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.10 07:31:19 BoogieIcfgContainer
[2024-10-31 19:31:19,697 INFO  L131        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2024-10-31 19:31:19,700 INFO  L112        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2024-10-31 19:31:19,700 INFO  L270        PluginConnector]: Initializing TraceAbstraction...
[2024-10-31 19:31:19,703 INFO  L274        PluginConnector]: TraceAbstraction initialized
[2024-10-31 19:31:19,703 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.10 07:31:19" (1/3) ...
[2024-10-31 19:31:19,704 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60bcc7e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.10 07:31:19, skipping insertion in model container
[2024-10-31 19:31:19,704 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 07:31:19" (2/3) ...
[2024-10-31 19:31:19,705 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60bcc7e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.10 07:31:19, skipping insertion in model container
[2024-10-31 19:31:19,705 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.10 07:31:19" (3/3) ...
[2024-10-31 19:31:19,707 INFO  L112   eAbstractionObserver]: Analyzing ICFG jain_5-2.c
[2024-10-31 19:31:19,721 INFO  L214   ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2024-10-31 19:31:19,722 INFO  L154   ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2024-10-31 19:31:19,780 INFO  L332      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2024-10-31 19:31:19,788 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;@59eb654c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2024-10-31 19:31:19,788 INFO  L334      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2024-10-31 19:31:19,793 INFO  L276                IsEmpty]: Start isEmpty. Operand  has 11 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 10 states have internal predecessors, (13), 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)
[2024-10-31 19:31:19,798 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 6
[2024-10-31 19:31:19,799 INFO  L207           NwaCegarLoop]: Found error trace
[2024-10-31 19:31:19,799 INFO  L215           NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1]
[2024-10-31 19:31:19,800 INFO  L396      AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-10-31 19:31:19,805 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-10-31 19:31:19,806 INFO  L85        PathProgramCache]: Analyzing trace with hash 28699754, now seen corresponding path program 1 times
[2024-10-31 19:31:19,813 INFO  L118   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2024-10-31 19:31:19,814 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1891722261]
[2024-10-31 19:31:19,814 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-10-31 19:31:19,816 INFO  L173          SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt
[2024-10-31 19:31:19,817 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4
[2024-10-31 19:31:19,819 INFO  L229       MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null)
[2024-10-31 19:31:19,827 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (2)] Waiting until timeout for monitored process
[2024-10-31 19:31:19,917 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-10-31 19:31:19,919 INFO  L255         TraceCheckSpWp]: Trace formula consists of 20 conjuncts, 6 conjuncts are in the unsatisfiable core
[2024-10-31 19:31:19,927 INFO  L278         TraceCheckSpWp]: Computing forward predicates...
[2024-10-31 19:31:20,045 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-10-31 19:31:20,046 INFO  L311         TraceCheckSpWp]: Computing backward predicates...
[2024-10-31 19:31:20,114 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-10-31 19:31:20,115 INFO  L136   FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2024-10-31 19:31:20,118 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1891722261]
[2024-10-31 19:31:20,119 INFO  L158   FreeRefinementEngine]: IpTcStrategyModulePreferences [1891722261] provided 2 perfect and 0 imperfect interpolant sequences
[2024-10-31 19:31:20,119 INFO  L185   FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences.
[2024-10-31 19:31:20,119 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6
[2024-10-31 19:31:20,121 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [526110452]
[2024-10-31 19:31:20,122 INFO  L85    oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton
[2024-10-31 19:31:20,126 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2024-10-31 19:31:20,126 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2024-10-31 19:31:20,147 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2024-10-31 19:31:20,148 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30
[2024-10-31 19:31:20,150 INFO  L87              Difference]: Start difference. First operand  has 11 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 10 states have internal predecessors, (13), 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)
[2024-10-31 19:31:20,209 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-10-31 19:31:20,209 INFO  L93              Difference]: Finished difference Result 21 states and 32 transitions.
[2024-10-31 19:31:20,211 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2024-10-31 19:31:20,212 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
[2024-10-31 19:31:20,212 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-10-31 19:31:20,222 INFO  L225             Difference]: With dead ends: 21
[2024-10-31 19:31:20,222 INFO  L226             Difference]: Without dead ends: 12
[2024-10-31 19:31:20,225 INFO  L431           NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42
[2024-10-31 19:31:20,229 INFO  L432           NwaCegarLoop]: 5 mSDtfsCounter, 2 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2024-10-31 19:31:20,230 INFO  L433           NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 16 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2024-10-31 19:31:20,245 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 12 states.
[2024-10-31 19:31:20,255 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12.
[2024-10-31 19:31:20,256 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)
[2024-10-31 19:31:20,257 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions.
[2024-10-31 19:31:20,258 INFO  L78                 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 5
[2024-10-31 19:31:20,258 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-10-31 19:31:20,259 INFO  L471      AbstractCegarLoop]: Abstraction has 12 states and 12 transitions.
[2024-10-31 19:31:20,259 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)
[2024-10-31 19:31:20,259 INFO  L276                IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions.
[2024-10-31 19:31:20,260 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 12
[2024-10-31 19:31:20,260 INFO  L207           NwaCegarLoop]: Found error trace
[2024-10-31 19:31:20,261 INFO  L215           NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1]
[2024-10-31 19:31:20,266 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (2)] Ended with exit code 0
[2024-10-31 19:31:20,463 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt
[2024-10-31 19:31:20,464 INFO  L396      AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-10-31 19:31:20,464 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-10-31 19:31:20,465 INFO  L85        PathProgramCache]: Analyzing trace with hash -1534070422, now seen corresponding path program 1 times
[2024-10-31 19:31:20,465 INFO  L118   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2024-10-31 19:31:20,465 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2063298375]
[2024-10-31 19:31:20,465 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-10-31 19:31:20,466 INFO  L173          SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt
[2024-10-31 19:31:20,466 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4
[2024-10-31 19:31:20,467 INFO  L229       MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null)
[2024-10-31 19:31:20,469 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (3)] Waiting until timeout for monitored process
[2024-10-31 19:31:20,540 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-10-31 19:31:20,542 INFO  L255         TraceCheckSpWp]: Trace formula consists of 32 conjuncts, 10 conjuncts are in the unsatisfiable core
[2024-10-31 19:31:20,544 INFO  L278         TraceCheckSpWp]: Computing forward predicates...
[2024-10-31 19:31:20,699 INFO  L134       CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-10-31 19:31:20,699 INFO  L311         TraceCheckSpWp]: Computing backward predicates...
[2024-10-31 19:31:20,880 INFO  L134       CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-10-31 19:31:20,880 INFO  L136   FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2024-10-31 19:31:20,880 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2063298375]
[2024-10-31 19:31:20,881 INFO  L158   FreeRefinementEngine]: IpTcStrategyModulePreferences [2063298375] provided 0 perfect and 2 imperfect interpolant sequences
[2024-10-31 19:31:20,881 INFO  L185   FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2024-10-31 19:31:20,881 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10
[2024-10-31 19:31:20,884 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1897279499]
[2024-10-31 19:31:20,884 INFO  L85    oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2024-10-31 19:31:20,885 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 10 states
[2024-10-31 19:31:20,886 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2024-10-31 19:31:20,886 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants.
[2024-10-31 19:31:20,887 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90
[2024-10-31 19:31:20,887 INFO  L87              Difference]: Start difference. First operand 12 states and 12 transitions. Second operand  has 10 states, 10 states have (on average 2.0) internal successors, (20), 10 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)
[2024-10-31 19:31:21,191 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-10-31 19:31:21,191 INFO  L93              Difference]: Finished difference Result 26 states and 29 transitions.
[2024-10-31 19:31:21,192 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. 
[2024-10-31 19:31:21,192 INFO  L78                 Accepts]: Start accepts. Automaton has  has 10 states, 10 states have (on average 2.0) internal successors, (20), 10 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
[2024-10-31 19:31:21,192 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-10-31 19:31:21,192 INFO  L225             Difference]: With dead ends: 26
[2024-10-31 19:31:21,193 INFO  L226             Difference]: Without dead ends: 24
[2024-10-31 19:31:21,193 INFO  L431           NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=93, Invalid=179, Unknown=0, NotChecked=0, Total=272
[2024-10-31 19:31:21,194 INFO  L432           NwaCegarLoop]: 6 mSDtfsCounter, 2 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2024-10-31 19:31:21,195 INFO  L433           NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 28 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2024-10-31 19:31:21,196 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 24 states.
[2024-10-31 19:31:21,200 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24.
[2024-10-31 19:31:21,200 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)
[2024-10-31 19:31:21,201 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 24 transitions.
[2024-10-31 19:31:21,201 INFO  L78                 Accepts]: Start accepts. Automaton has 24 states and 24 transitions. Word has length 11
[2024-10-31 19:31:21,201 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-10-31 19:31:21,202 INFO  L471      AbstractCegarLoop]: Abstraction has 24 states and 24 transitions.
[2024-10-31 19:31:21,202 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 10 states, 10 states have (on average 2.0) internal successors, (20), 10 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)
[2024-10-31 19:31:21,202 INFO  L276                IsEmpty]: Start isEmpty. Operand 24 states and 24 transitions.
[2024-10-31 19:31:21,202 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 24
[2024-10-31 19:31:21,202 INFO  L207           NwaCegarLoop]: Found error trace
[2024-10-31 19:31:21,203 INFO  L215           NwaCegarLoop]: trace histogram [7, 6, 6, 1, 1, 1, 1]
[2024-10-31 19:31:21,206 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (3)] Ended with exit code 0
[2024-10-31 19:31:21,403 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt
[2024-10-31 19:31:21,404 INFO  L396      AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-10-31 19:31:21,404 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-10-31 19:31:21,404 INFO  L85        PathProgramCache]: Analyzing trace with hash 1980545898, now seen corresponding path program 2 times
[2024-10-31 19:31:21,404 INFO  L118   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2024-10-31 19:31:21,405 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1108529720]
[2024-10-31 19:31:21,405 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-10-31 19:31:21,405 INFO  L173          SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt
[2024-10-31 19:31:21,405 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4
[2024-10-31 19:31:21,407 INFO  L229       MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null)
[2024-10-31 19:31:21,408 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (4)] Waiting until timeout for monitored process
[2024-10-31 19:31:21,472 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-10-31 19:31:21,473 INFO  L255         TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 18 conjuncts are in the unsatisfiable core
[2024-10-31 19:31:21,478 INFO  L278         TraceCheckSpWp]: Computing forward predicates...
[2024-10-31 19:31:21,733 INFO  L134       CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-10-31 19:31:21,733 INFO  L311         TraceCheckSpWp]: Computing backward predicates...
[2024-10-31 19:31:22,242 INFO  L134       CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-10-31 19:31:22,242 INFO  L136   FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2024-10-31 19:31:22,244 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1108529720]
[2024-10-31 19:31:22,244 INFO  L158   FreeRefinementEngine]: IpTcStrategyModulePreferences [1108529720] provided 0 perfect and 2 imperfect interpolant sequences
[2024-10-31 19:31:22,244 INFO  L185   FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2024-10-31 19:31:22,244 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18
[2024-10-31 19:31:22,245 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1140410975]
[2024-10-31 19:31:22,245 INFO  L85    oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2024-10-31 19:31:22,245 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 18 states
[2024-10-31 19:31:22,245 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2024-10-31 19:31:22,246 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants.
[2024-10-31 19:31:22,247 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=223, Unknown=0, NotChecked=0, Total=306
[2024-10-31 19:31:22,247 INFO  L87              Difference]: Start difference. First operand 24 states and 24 transitions. Second operand  has 18 states, 18 states have (on average 2.4444444444444446) internal successors, (44), 18 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)
[2024-10-31 19:31:23,816 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-10-31 19:31:23,816 INFO  L93              Difference]: Finished difference Result 50 states and 57 transitions.
[2024-10-31 19:31:23,817 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. 
[2024-10-31 19:31:23,817 INFO  L78                 Accepts]: Start accepts. Automaton has  has 18 states, 18 states have (on average 2.4444444444444446) internal successors, (44), 18 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
[2024-10-31 19:31:23,817 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-10-31 19:31:23,819 INFO  L225             Difference]: With dead ends: 50
[2024-10-31 19:31:23,819 INFO  L226             Difference]: Without dead ends: 48
[2024-10-31 19:31:23,820 INFO  L431           NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 214 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=427, Invalid=905, Unknown=0, NotChecked=0, Total=1332
[2024-10-31 19:31:23,820 INFO  L432           NwaCegarLoop]: 10 mSDtfsCounter, 2 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 140 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 86 SdHoareTripleChecker+Invalid, 154 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 140 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2024-10-31 19:31:23,821 INFO  L433           NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 86 Invalid, 154 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 140 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2024-10-31 19:31:23,823 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 48 states.
[2024-10-31 19:31:23,836 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48.
[2024-10-31 19:31:23,836 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)
[2024-10-31 19:31:23,839 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 48 transitions.
[2024-10-31 19:31:23,839 INFO  L78                 Accepts]: Start accepts. Automaton has 48 states and 48 transitions. Word has length 23
[2024-10-31 19:31:23,839 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-10-31 19:31:23,839 INFO  L471      AbstractCegarLoop]: Abstraction has 48 states and 48 transitions.
[2024-10-31 19:31:23,840 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 18 states, 18 states have (on average 2.4444444444444446) internal successors, (44), 18 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)
[2024-10-31 19:31:23,840 INFO  L276                IsEmpty]: Start isEmpty. Operand 48 states and 48 transitions.
[2024-10-31 19:31:23,840 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 48
[2024-10-31 19:31:23,841 INFO  L207           NwaCegarLoop]: Found error trace
[2024-10-31 19:31:23,841 INFO  L215           NwaCegarLoop]: trace histogram [15, 14, 14, 1, 1, 1, 1]
[2024-10-31 19:31:23,845 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (4)] Ended with exit code 0
[2024-10-31 19:31:24,044 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt
[2024-10-31 19:31:24,045 INFO  L396      AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-10-31 19:31:24,046 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-10-31 19:31:24,046 INFO  L85        PathProgramCache]: Analyzing trace with hash -1964421270, now seen corresponding path program 3 times
[2024-10-31 19:31:24,046 INFO  L118   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2024-10-31 19:31:24,046 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [479021816]
[2024-10-31 19:31:24,046 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-10-31 19:31:24,046 INFO  L173          SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt
[2024-10-31 19:31:24,047 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4
[2024-10-31 19:31:24,049 INFO  L229       MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null)
[2024-10-31 19:31:24,050 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (5)] Waiting until timeout for monitored process
[2024-10-31 19:31:24,149 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-10-31 19:31:24,151 INFO  L255         TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 34 conjuncts are in the unsatisfiable core
[2024-10-31 19:31:24,154 INFO  L278         TraceCheckSpWp]: Computing forward predicates...
[2024-10-31 19:31:24,566 INFO  L134       CoverageAnalysis]: Checked inductivity of 301 backedges. 0 proven. 301 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-10-31 19:31:24,566 INFO  L311         TraceCheckSpWp]: Computing backward predicates...
[2024-10-31 19:31:26,153 INFO  L134       CoverageAnalysis]: Checked inductivity of 301 backedges. 0 proven. 301 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-10-31 19:31:26,154 INFO  L136   FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2024-10-31 19:31:26,154 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [479021816]
[2024-10-31 19:31:26,154 INFO  L158   FreeRefinementEngine]: IpTcStrategyModulePreferences [479021816] provided 0 perfect and 2 imperfect interpolant sequences
[2024-10-31 19:31:26,154 INFO  L185   FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2024-10-31 19:31:26,154 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 34
[2024-10-31 19:31:26,155 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1351036027]
[2024-10-31 19:31:26,155 INFO  L85    oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2024-10-31 19:31:26,155 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 34 states
[2024-10-31 19:31:26,155 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2024-10-31 19:31:26,156 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants.
[2024-10-31 19:31:26,157 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=291, Invalid=831, Unknown=0, NotChecked=0, Total=1122
[2024-10-31 19:31:26,157 INFO  L87              Difference]: Start difference. First operand 48 states and 48 transitions. Second operand  has 34 states, 34 states have (on average 2.7058823529411766) internal successors, (92), 34 states have internal predecessors, (92), 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)
[2024-10-31 19:31:34,677 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-10-31 19:31:34,677 INFO  L93              Difference]: Finished difference Result 98 states and 113 transitions.
[2024-10-31 19:31:34,678 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. 
[2024-10-31 19:31:34,678 INFO  L78                 Accepts]: Start accepts. Automaton has  has 34 states, 34 states have (on average 2.7058823529411766) internal successors, (92), 34 states have internal predecessors, (92), 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 47
[2024-10-31 19:31:34,678 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-10-31 19:31:34,679 INFO  L225             Difference]: With dead ends: 98
[2024-10-31 19:31:34,679 INFO  L226             Difference]: Without dead ends: 96
[2024-10-31 19:31:34,681 INFO  L431           NwaCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1114 ImplicationChecksByTransitivity, 9.5s TimeCoverageRelationStatistics Valid=1815, Invalid=4037, Unknown=0, NotChecked=0, Total=5852
[2024-10-31 19:31:34,682 INFO  L432           NwaCegarLoop]: 18 mSDtfsCounter, 2 mSDsluCounter, 262 mSDsCounter, 0 mSdLazyCounter, 510 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 280 SdHoareTripleChecker+Invalid, 540 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 510 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time
[2024-10-31 19:31:34,683 INFO  L433           NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 280 Invalid, 540 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 510 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time]
[2024-10-31 19:31:34,684 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 96 states.
[2024-10-31 19:31:34,699 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 96.
[2024-10-31 19:31:34,700 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 96 states, 95 states have (on average 1.0105263157894737) internal successors, (96), 95 states have internal predecessors, (96), 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)
[2024-10-31 19:31:34,701 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 96 transitions.
[2024-10-31 19:31:34,701 INFO  L78                 Accepts]: Start accepts. Automaton has 96 states and 96 transitions. Word has length 47
[2024-10-31 19:31:34,701 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-10-31 19:31:34,701 INFO  L471      AbstractCegarLoop]: Abstraction has 96 states and 96 transitions.
[2024-10-31 19:31:34,702 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 34 states, 34 states have (on average 2.7058823529411766) internal successors, (92), 34 states have internal predecessors, (92), 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)
[2024-10-31 19:31:34,702 INFO  L276                IsEmpty]: Start isEmpty. Operand 96 states and 96 transitions.
[2024-10-31 19:31:34,703 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 96
[2024-10-31 19:31:34,704 INFO  L207           NwaCegarLoop]: Found error trace
[2024-10-31 19:31:34,704 INFO  L215           NwaCegarLoop]: trace histogram [31, 30, 30, 1, 1, 1, 1]
[2024-10-31 19:31:34,707 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (5)] Ended with exit code 0
[2024-10-31 19:31:34,904 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt
[2024-10-31 19:31:34,905 INFO  L396      AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-10-31 19:31:34,905 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-10-31 19:31:34,905 INFO  L85        PathProgramCache]: Analyzing trace with hash -1305577622, now seen corresponding path program 4 times
[2024-10-31 19:31:34,906 INFO  L118   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2024-10-31 19:31:34,906 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [30470646]
[2024-10-31 19:31:34,906 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-10-31 19:31:34,906 INFO  L173          SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt
[2024-10-31 19:31:34,906 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4
[2024-10-31 19:31:34,908 INFO  L229       MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null)
[2024-10-31 19:31:34,909 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (6)] Waiting until timeout for monitored process
[2024-10-31 19:31:35,087 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-10-31 19:31:35,090 INFO  L255         TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 66 conjuncts are in the unsatisfiable core
[2024-10-31 19:31:35,094 INFO  L278         TraceCheckSpWp]: Computing forward predicates...
[2024-10-31 19:31:36,014 INFO  L134       CoverageAnalysis]: Checked inductivity of 1365 backedges. 0 proven. 1365 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-10-31 19:31:36,014 INFO  L311         TraceCheckSpWp]: Computing backward predicates...
[2024-10-31 19:31:41,374 INFO  L134       CoverageAnalysis]: Checked inductivity of 1365 backedges. 0 proven. 1365 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-10-31 19:31:41,375 INFO  L136   FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2024-10-31 19:31:41,375 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [30470646]
[2024-10-31 19:31:41,375 INFO  L158   FreeRefinementEngine]: IpTcStrategyModulePreferences [30470646] provided 0 perfect and 2 imperfect interpolant sequences
[2024-10-31 19:31:41,375 INFO  L185   FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2024-10-31 19:31:41,375 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34] total 66
[2024-10-31 19:31:41,375 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1654745396]
[2024-10-31 19:31:41,375 INFO  L85    oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2024-10-31 19:31:41,376 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 66 states
[2024-10-31 19:31:41,376 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2024-10-31 19:31:41,378 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants.
[2024-10-31 19:31:41,379 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=1091, Invalid=3199, Unknown=0, NotChecked=0, Total=4290
[2024-10-31 19:31:41,380 INFO  L87              Difference]: Start difference. First operand 96 states and 96 transitions. Second operand  has 66 states, 66 states have (on average 2.8484848484848486) internal successors, (188), 66 states have internal predecessors, (188), 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)
[2024-10-31 19:32:55,602 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-10-31 19:32:55,602 INFO  L93              Difference]: Finished difference Result 194 states and 225 transitions.
[2024-10-31 19:32:55,602 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 126 states. 
[2024-10-31 19:32:55,603 INFO  L78                 Accepts]: Start accepts. Automaton has  has 66 states, 66 states have (on average 2.8484848484848486) internal successors, (188), 66 states have internal predecessors, (188), 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 95
[2024-10-31 19:32:55,603 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-10-31 19:32:55,604 INFO  L225             Difference]: With dead ends: 194
[2024-10-31 19:32:55,604 INFO  L226             Difference]: Without dead ends: 192
[2024-10-31 19:32:55,609 INFO  L431           NwaCegarLoop]: 0 DeclaredPredicates, 279 GetRequests, 124 SyntacticMatches, 0 SemanticMatches, 155 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5026 ImplicationChecksByTransitivity, 77.7s TimeCoverageRelationStatistics Valid=7471, Invalid=17021, Unknown=0, NotChecked=0, Total=24492
[2024-10-31 19:32:55,609 INFO  L432           NwaCegarLoop]: 34 mSDtfsCounter, 2 mSDsluCounter, 1030 mSDsCounter, 0 mSdLazyCounter, 2108 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 1064 SdHoareTripleChecker+Invalid, 2170 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 2108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time
[2024-10-31 19:32:55,610 INFO  L433           NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 1064 Invalid, 2170 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 2108 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time]
[2024-10-31 19:32:55,611 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 192 states.
[2024-10-31 19:32:55,657 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 192.
[2024-10-31 19:32:55,658 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 192 states, 191 states have (on average 1.0052356020942408) internal successors, (192), 191 states have internal predecessors, (192), 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)
[2024-10-31 19:32:55,659 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 192 transitions.
[2024-10-31 19:32:55,659 INFO  L78                 Accepts]: Start accepts. Automaton has 192 states and 192 transitions. Word has length 95
[2024-10-31 19:32:55,659 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-10-31 19:32:55,659 INFO  L471      AbstractCegarLoop]: Abstraction has 192 states and 192 transitions.
[2024-10-31 19:32:55,660 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 66 states, 66 states have (on average 2.8484848484848486) internal successors, (188), 66 states have internal predecessors, (188), 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)
[2024-10-31 19:32:55,660 INFO  L276                IsEmpty]: Start isEmpty. Operand 192 states and 192 transitions.
[2024-10-31 19:32:55,662 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 192
[2024-10-31 19:32:55,662 INFO  L207           NwaCegarLoop]: Found error trace
[2024-10-31 19:32:55,662 INFO  L215           NwaCegarLoop]: trace histogram [63, 62, 62, 1, 1, 1, 1]
[2024-10-31 19:32:55,666 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (6)] Ended with exit code 0
[2024-10-31 19:32:55,863 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt
[2024-10-31 19:32:55,863 INFO  L396      AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-10-31 19:32:55,864 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-10-31 19:32:55,864 INFO  L85        PathProgramCache]: Analyzing trace with hash -1494694038, now seen corresponding path program 5 times
[2024-10-31 19:32:55,864 INFO  L118   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2024-10-31 19:32:55,864 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1237170434]
[2024-10-31 19:32:55,864 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-10-31 19:32:55,864 INFO  L173          SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt
[2024-10-31 19:32:55,864 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4
[2024-10-31 19:32:55,865 INFO  L229       MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null)
[2024-10-31 19:32:55,866 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (7)] Waiting until timeout for monitored process
[2024-10-31 19:32:56,229 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-10-31 19:32:56,233 INFO  L255         TraceCheckSpWp]: Trace formula consists of 392 conjuncts, 130 conjuncts are in the unsatisfiable core
[2024-10-31 19:32:56,240 INFO  L278         TraceCheckSpWp]: Computing forward predicates...
[2024-10-31 19:32:58,942 INFO  L134       CoverageAnalysis]: Checked inductivity of 5797 backedges. 0 proven. 5797 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-10-31 19:32:58,942 INFO  L311         TraceCheckSpWp]: Computing backward predicates...