/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 'z3 -smt2 -in SMTLIB2_COMPLIANT=true' -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Bitvector.epf -i ../../../trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.krebs.3.prop1-func-interl.c


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


This is Ultimate 0.2.5-dev-356b6ba-m
[2024-11-01 04:59:12,137 INFO  L188        SettingsManager]: Resetting all preferences to default values...
[2024-11-01 04:59:12,214 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 04:59:12,218 WARN  L101        SettingsManager]: Preference file contains the following unknown settings:
[2024-11-01 04:59:12,218 WARN  L103        SettingsManager]:   * de.uni_freiburg.informatik.ultimate.core.Log level for class
[2024-11-01 04:59:12,241 INFO  L130        SettingsManager]: Preferences different from defaults after loading the file:
[2024-11-01 04:59:12,241 INFO  L151        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2024-11-01 04:59:12,242 INFO  L153        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2024-11-01 04:59:12,242 INFO  L151        SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults:
[2024-11-01 04:59:12,244 INFO  L153        SettingsManager]:  * Use memory slicer=true
[2024-11-01 04:59:12,244 INFO  L151        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2024-11-01 04:59:12,244 INFO  L153        SettingsManager]:  * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2024-11-01 04:59:12,244 INFO  L151        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2024-11-01 04:59:12,245 INFO  L153        SettingsManager]:  * Create parallel compositions if possible=false
[2024-11-01 04:59:12,245 INFO  L153        SettingsManager]:  * Use SBE=true
[2024-11-01 04:59:12,245 INFO  L151        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2024-11-01 04:59:12,245 INFO  L153        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2024-11-01 04:59:12,246 INFO  L153        SettingsManager]:  * Check division by zero=IGNORE
[2024-11-01 04:59:12,246 INFO  L153        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2024-11-01 04:59:12,248 INFO  L153        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2024-11-01 04:59:12,249 INFO  L153        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2024-11-01 04:59:12,249 INFO  L153        SettingsManager]:  * Adapt memory model on pointer casts if necessary=true
[2024-11-01 04:59:12,249 INFO  L153        SettingsManager]:  * Use bitvectors instead of ints=true
[2024-11-01 04:59:12,249 INFO  L153        SettingsManager]:  * Allow undefined functions=false
[2024-11-01 04:59:12,249 INFO  L153        SettingsManager]:  * Memory model=HoenickeLindenmann_4ByteResolution
[2024-11-01 04:59:12,249 INFO  L153        SettingsManager]:  * Check if freed pointer was valid=false
[2024-11-01 04:59:12,250 INFO  L153        SettingsManager]:  * Use constant arrays=true
[2024-11-01 04:59:12,250 INFO  L151        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2024-11-01 04:59:12,250 INFO  L153        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2024-11-01 04:59:12,251 INFO  L153        SettingsManager]:  * Only consider context switches at boundaries of atomic blocks=true
[2024-11-01 04:59:12,251 INFO  L153        SettingsManager]:  * SMT solver=External_DefaultMode
[2024-11-01 04:59:12,251 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2024-11-01 04:59:12,251 INFO  L151        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2024-11-01 04:59:12,251 INFO  L153        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2024-11-01 04:59:12,252 INFO  L153        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopHeads
[2024-11-01 04:59:12,252 INFO  L153        SettingsManager]:  * Trace refinement strategy=WOLF
[2024-11-01 04:59:12,252 INFO  L153        SettingsManager]:  * Command for external solver=cvc4 --incremental --print-success --lang smt 
[2024-11-01 04:59:12,252 INFO  L153        SettingsManager]:  * Apply one-shot large block encoding in concurrent analysis=false
[2024-11-01 04:59:12,252 INFO  L153        SettingsManager]:  * Automaton type used in concurrency analysis=PETRI_NET
[2024-11-01 04:59:12,252 INFO  L153        SettingsManager]:  * Order on configurations for Petri net unfoldings=DBO
[2024-11-01 04:59:12,253 INFO  L153        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2024-11-01 04:59:12,253 INFO  L153        SettingsManager]:  * Logic for external solver=AUFBV
[2024-11-01 04:59:12,254 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$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Allow undefined functions -> true
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> External_ModelsAndUnsatCoreMode
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Command for external solver -> z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-01 04:59:12,496 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2024-11-01 04:59:12,510 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2024-11-01 04:59:12,512 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2024-11-01 04:59:12,513 INFO  L270        PluginConnector]: Initializing CDTParser...
[2024-11-01 04:59:12,513 INFO  L274        PluginConnector]: CDTParser initialized
[2024-11-01 04:59:12,514 INFO  L431   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.krebs.3.prop1-func-interl.c
[2024-11-01 04:59:13,778 INFO  L533              CDTParser]: Created temporary CDT project at NULL
[2024-11-01 04:59:14,021 INFO  L384              CDTParser]: Found 1 translation units.
[2024-11-01 04:59:14,021 INFO  L180              CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.krebs.3.prop1-func-interl.c
[2024-11-01 04:59:14,036 INFO  L427              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ea1146c6e/b4e3d0fb1312496f8820e57396b1c980/FLAGafd802665
[2024-11-01 04:59:14,337 INFO  L435              CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ea1146c6e/b4e3d0fb1312496f8820e57396b1c980
[2024-11-01 04:59:14,339 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2024-11-01 04:59:14,340 INFO  L133        ToolchainWalker]: Walking toolchain with 5 elements.
[2024-11-01 04:59:14,340 INFO  L112        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2024-11-01 04:59:14,340 INFO  L270        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2024-11-01 04:59:14,344 INFO  L274        PluginConnector]: CACSL2BoogieTranslator initialized
[2024-11-01 04:59:14,344 INFO  L184        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.11 04:59:14" (1/1) ...
[2024-11-01 04:59:14,345 INFO  L204        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6c70621a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 04:59:14, skipping insertion in model container
[2024-11-01 04:59:14,345 INFO  L184        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.11 04:59:14" (1/1) ...
[2024-11-01 04:59:14,402 INFO  L175         MainTranslator]: Built tables and reachable declarations
[2024-11-01 04:59:14,558 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.krebs.3.prop1-func-interl.c[1172,1185]
[2024-11-01 04:59:14,786 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2024-11-01 04:59:14,796 INFO  L200         MainTranslator]: Completed pre-run
[2024-11-01 04:59:14,806 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.krebs.3.prop1-func-interl.c[1172,1185]
[2024-11-01 04:59:14,884 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2024-11-01 04:59:14,897 INFO  L204         MainTranslator]: Completed translation
[2024-11-01 04:59:14,899 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 04:59:14 WrapperNode
[2024-11-01 04:59:14,899 INFO  L131        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2024-11-01 04:59:14,900 INFO  L112        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2024-11-01 04:59:14,900 INFO  L270        PluginConnector]: Initializing Boogie Procedure Inliner...
[2024-11-01 04:59:14,900 INFO  L274        PluginConnector]: Boogie Procedure Inliner initialized
[2024-11-01 04:59:14,905 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 04:59:14" (1/1) ...
[2024-11-01 04:59:14,935 INFO  L184        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 04:59:14" (1/1) ...
[2024-11-01 04:59:15,003 INFO  L138                Inliner]: procedures = 17, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1537
[2024-11-01 04:59:15,003 INFO  L131        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2024-11-01 04:59:15,004 INFO  L112        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2024-11-01 04:59:15,004 INFO  L270        PluginConnector]: Initializing Boogie Preprocessor...
[2024-11-01 04:59:15,004 INFO  L274        PluginConnector]: Boogie Preprocessor initialized
[2024-11-01 04:59:15,013 INFO  L184        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 04:59:14" (1/1) ...
[2024-11-01 04:59:15,013 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 04:59:14" (1/1) ...
[2024-11-01 04:59:15,021 INFO  L184        PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 04:59:14" (1/1) ...
[2024-11-01 04:59:15,046 INFO  L175           MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0].
[2024-11-01 04:59:15,046 INFO  L184        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 04:59:14" (1/1) ...
[2024-11-01 04:59:15,046 INFO  L184        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 04:59:14" (1/1) ...
[2024-11-01 04:59:15,081 INFO  L184        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 04:59:14" (1/1) ...
[2024-11-01 04:59:15,089 INFO  L184        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 04:59:14" (1/1) ...
[2024-11-01 04:59:15,093 INFO  L184        PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 04:59:14" (1/1) ...
[2024-11-01 04:59:15,098 INFO  L184        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 04:59:14" (1/1) ...
[2024-11-01 04:59:15,116 INFO  L131        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2024-11-01 04:59:15,118 INFO  L112        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2024-11-01 04:59:15,118 INFO  L270        PluginConnector]: Initializing RCFGBuilder...
[2024-11-01 04:59:15,118 INFO  L274        PluginConnector]: RCFGBuilder initialized
[2024-11-01 04:59:15,119 INFO  L184        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 04:59:14" (1/1) ...
[2024-11-01 04:59:15,124 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2024-11-01 04:59:15,132 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2024-11-01 04:59:15,142 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 04:59:15,144 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 04:59:15,162 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2024-11-01 04:59:15,162 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0
[2024-11-01 04:59:15,162 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2024-11-01 04:59:15,162 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2024-11-01 04:59:15,434 INFO  L238             CfgBuilder]: Building ICFG
[2024-11-01 04:59:15,436 INFO  L264             CfgBuilder]: Building CFG for each procedure with an implementation
[2024-11-01 04:59:16,366 INFO  L?                        ?]: Removed 71 outVars from TransFormulas that were not future-live.
[2024-11-01 04:59:16,366 INFO  L287             CfgBuilder]: Performing block encoding
[2024-11-01 04:59:16,375 INFO  L311             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2024-11-01 04:59:16,375 INFO  L316             CfgBuilder]: Removed 1 assume(true) statements.
[2024-11-01 04:59:16,376 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.11 04:59:16 BoogieIcfgContainer
[2024-11-01 04:59:16,376 INFO  L131        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2024-11-01 04:59:16,377 INFO  L112        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2024-11-01 04:59:16,377 INFO  L270        PluginConnector]: Initializing TraceAbstraction...
[2024-11-01 04:59:16,379 INFO  L274        PluginConnector]: TraceAbstraction initialized
[2024-11-01 04:59:16,380 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.11 04:59:14" (1/3) ...
[2024-11-01 04:59:16,380 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1285cdb9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.11 04:59:16, skipping insertion in model container
[2024-11-01 04:59:16,380 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 04:59:14" (2/3) ...
[2024-11-01 04:59:16,380 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1285cdb9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.11 04:59:16, skipping insertion in model container
[2024-11-01 04:59:16,381 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.11 04:59:16" (3/3) ...
[2024-11-01 04:59:16,382 INFO  L112   eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.krebs.3.prop1-func-interl.c
[2024-11-01 04:59:16,393 INFO  L214   ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2024-11-01 04:59:16,393 INFO  L154   ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2024-11-01 04:59:16,436 INFO  L332      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2024-11-01 04:59:16,441 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;@1a4bfe00, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2024-11-01 04:59:16,441 INFO  L334      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2024-11-01 04:59:16,444 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 04:59:16,448 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 6
[2024-11-01 04:59:16,448 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-01 04:59:16,450 INFO  L215           NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1]
[2024-11-01 04:59:16,450 INFO  L396      AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-01 04:59:16,453 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-01 04:59:16,453 INFO  L85        PathProgramCache]: Analyzing trace with hash 28694789, now seen corresponding path program 1 times
[2024-11-01 04:59:16,459 INFO  L118   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2024-11-01 04:59:16,459 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [175588432]
[2024-11-01 04:59:16,459 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-01 04:59:16,460 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-01 04:59:16,461 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2024-11-01 04:59:16,462 INFO  L229       MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-01 04:59:16,463 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process
[2024-11-01 04:59:16,751 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-01 04:59:16,758 INFO  L255         TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 18 conjuncts are in the unsatisfiable core
[2024-11-01 04:59:16,767 INFO  L278         TraceCheckSpWp]: Computing forward predicates...
[2024-11-01 04:59:16,869 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 04:59:16,869 INFO  L311         TraceCheckSpWp]: Computing backward predicates...
[2024-11-01 04:59:17,002 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 04:59:17,003 INFO  L136   FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2024-11-01 04:59:17,003 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [175588432]
[2024-11-01 04:59:17,004 INFO  L158   FreeRefinementEngine]: IpTcStrategyModulePreferences [175588432] provided 2 perfect and 0 imperfect interpolant sequences
[2024-11-01 04:59:17,004 INFO  L185   FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences.
[2024-11-01 04:59:17,004 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6
[2024-11-01 04:59:17,005 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [757240811]
[2024-11-01 04:59:17,006 INFO  L85    oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton
[2024-11-01 04:59:17,008 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2024-11-01 04:59:17,009 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2024-11-01 04:59:17,026 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2024-11-01 04:59:17,027 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30
[2024-11-01 04:59:17,028 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 04:59:17,150 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-01 04:59:17,150 INFO  L93              Difference]: Finished difference Result 18 states and 23 transitions.
[2024-11-01 04:59:17,152 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2024-11-01 04:59:17,153 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 04:59:17,153 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-01 04:59:17,158 INFO  L225             Difference]: With dead ends: 18
[2024-11-01 04:59:17,158 INFO  L226             Difference]: Without dead ends: 10
[2024-11-01 04:59:17,161 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 04:59:17,164 INFO  L432           NwaCegarLoop]: 4 mSDtfsCounter, 4 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s 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, 0.1s IncrementalHoareTripleChecker+Time
[2024-11-01 04:59:17,165 INFO  L433           NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 14 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2024-11-01 04:59:17,178 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 10 states.
[2024-11-01 04:59:17,185 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 9.
[2024-11-01 04:59:17,186 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 04:59:17,186 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions.
[2024-11-01 04:59:17,187 INFO  L78                 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 5
[2024-11-01 04:59:17,187 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-01 04:59:17,187 INFO  L471      AbstractCegarLoop]: Abstraction has 9 states and 9 transitions.
[2024-11-01 04:59:17,187 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 04:59:17,188 INFO  L276                IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions.
[2024-11-01 04:59:17,188 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 9
[2024-11-01 04:59:17,188 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-01 04:59:17,188 INFO  L215           NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1]
[2024-11-01 04:59:17,201 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0
[2024-11-01 04:59:17,388 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-01 04:59:17,389 INFO  L396      AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-01 04:59:17,389 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-01 04:59:17,389 INFO  L85        PathProgramCache]: Analyzing trace with hash 152739811, now seen corresponding path program 1 times
[2024-11-01 04:59:17,390 INFO  L118   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2024-11-01 04:59:17,390 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [359471186]
[2024-11-01 04:59:17,390 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-01 04:59:17,390 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-01 04:59:17,390 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2024-11-01 04:59:17,392 INFO  L229       MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-01 04:59:17,393 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process
[2024-11-01 04:59:17,769 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-01 04:59:17,777 INFO  L255         TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 25 conjuncts are in the unsatisfiable core
[2024-11-01 04:59:17,787 INFO  L278         TraceCheckSpWp]: Computing forward predicates...
[2024-11-01 04:59:18,038 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 04:59:18,038 INFO  L311         TraceCheckSpWp]: Computing backward predicates...
[2024-11-01 04:59:55,764 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 04:59:55,764 INFO  L136   FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2024-11-01 04:59:55,764 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [359471186]
[2024-11-01 04:59:55,765 INFO  L158   FreeRefinementEngine]: IpTcStrategyModulePreferences [359471186] provided 0 perfect and 2 imperfect interpolant sequences
[2024-11-01 04:59:55,765 INFO  L185   FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2024-11-01 04:59:55,765 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12
[2024-11-01 04:59:55,765 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1412526801]
[2024-11-01 04:59:55,765 INFO  L85    oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2024-11-01 04:59:55,766 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 12 states
[2024-11-01 04:59:55,766 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2024-11-01 04:59:55,767 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants.
[2024-11-01 04:59:55,767 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=84, Unknown=7, NotChecked=0, Total=132
[2024-11-01 04:59:55,767 INFO  L87              Difference]: Start difference. First operand 9 states and 9 transitions. Second operand  has 12 states, 12 states have (on average 1.1666666666666667) internal successors, (14), 12 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 05:00:12,731 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-01 05:00:12,731 INFO  L93              Difference]: Finished difference Result 18 states and 19 transitions.
[2024-11-01 05:00:12,733 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2024-11-01 05:00:12,733 INFO  L78                 Accepts]: Start accepts. Automaton has  has 12 states, 12 states have (on average 1.1666666666666667) internal successors, (14), 12 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 05:00:12,733 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-01 05:00:12,734 INFO  L225             Difference]: With dead ends: 18
[2024-11-01 05:00:12,734 INFO  L226             Difference]: Without dead ends: 16
[2024-11-01 05:00:12,735 INFO  L431           NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 51.6s TimeCoverageRelationStatistics Valid=92, Invalid=171, Unknown=9, NotChecked=0, Total=272
[2024-11-01 05:00:12,736 INFO  L432           NwaCegarLoop]: 4 mSDtfsCounter, 6 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time
[2024-11-01 05:00:12,736 INFO  L433           NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 19 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time]
[2024-11-01 05:00:12,737 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 16 states.
[2024-11-01 05:00:12,742 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 15.
[2024-11-01 05:00:12,742 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 05:00:12,742 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions.
[2024-11-01 05:00:12,743 INFO  L78                 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 8
[2024-11-01 05:00:12,743 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-01 05:00:12,743 INFO  L471      AbstractCegarLoop]: Abstraction has 15 states and 15 transitions.
[2024-11-01 05:00:12,743 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 12 states, 12 states have (on average 1.1666666666666667) internal successors, (14), 12 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 05:00:12,743 INFO  L276                IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions.
[2024-11-01 05:00:12,743 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 15
[2024-11-01 05:00:12,743 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-01 05:00:12,744 INFO  L215           NwaCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1]
[2024-11-01 05:00:12,762 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0
[2024-11-01 05:00:12,944 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-01 05:00:12,944 INFO  L396      AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-01 05:00:12,945 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-01 05:00:12,945 INFO  L85        PathProgramCache]: Analyzing trace with hash 1333570723, now seen corresponding path program 2 times
[2024-11-01 05:00:12,945 INFO  L118   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2024-11-01 05:00:12,945 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1238817025]
[2024-11-01 05:00:12,945 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-01 05:00:12,946 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-01 05:00:12,946 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2024-11-01 05:00:12,954 INFO  L229       MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-01 05:00:12,955 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process
[2024-11-01 05:00:13,481 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-01 05:00:13,501 INFO  L255         TraceCheckSpWp]: Trace formula consists of 310 conjuncts, 108 conjuncts are in the unsatisfiable core
[2024-11-01 05:00:13,523 INFO  L278         TraceCheckSpWp]: Computing forward predicates...