/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.vis_arrays_vsaR_p11.c


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


This is Ultimate 0.2.5-dev-b75d321-m
[2024-11-04 17:17:15,562 INFO  L188        SettingsManager]: Resetting all preferences to default values...
[2024-11-04 17:17:15,635 INFO  L114        SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Bitvector.epf
[2024-11-04 17:17:15,641 WARN  L101        SettingsManager]: Preference file contains the following unknown settings:
[2024-11-04 17:17:15,642 WARN  L103        SettingsManager]:   * de.uni_freiburg.informatik.ultimate.core.Log level for class
[2024-11-04 17:17:15,670 INFO  L130        SettingsManager]: Preferences different from defaults after loading the file:
[2024-11-04 17:17:15,671 INFO  L151        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2024-11-04 17:17:15,672 INFO  L153        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2024-11-04 17:17:15,672 INFO  L151        SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults:
[2024-11-04 17:17:15,674 INFO  L153        SettingsManager]:  * Use memory slicer=true
[2024-11-04 17:17:15,674 INFO  L151        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2024-11-04 17:17:15,675 INFO  L153        SettingsManager]:  * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2024-11-04 17:17:15,677 INFO  L151        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2024-11-04 17:17:15,677 INFO  L153        SettingsManager]:  * Create parallel compositions if possible=false
[2024-11-04 17:17:15,677 INFO  L153        SettingsManager]:  * Use SBE=true
[2024-11-04 17:17:15,678 INFO  L151        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2024-11-04 17:17:15,678 INFO  L153        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2024-11-04 17:17:15,678 INFO  L153        SettingsManager]:  * Check division by zero=IGNORE
[2024-11-04 17:17:15,678 INFO  L153        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2024-11-04 17:17:15,678 INFO  L153        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2024-11-04 17:17:15,679 INFO  L153        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2024-11-04 17:17:15,681 INFO  L153        SettingsManager]:  * Adapt memory model on pointer casts if necessary=true
[2024-11-04 17:17:15,681 INFO  L153        SettingsManager]:  * Use bitvectors instead of ints=true
[2024-11-04 17:17:15,681 INFO  L153        SettingsManager]:  * Allow undefined functions=false
[2024-11-04 17:17:15,681 INFO  L153        SettingsManager]:  * Memory model=HoenickeLindenmann_4ByteResolution
[2024-11-04 17:17:15,682 INFO  L153        SettingsManager]:  * Check if freed pointer was valid=false
[2024-11-04 17:17:15,682 INFO  L153        SettingsManager]:  * Use constant arrays=true
[2024-11-04 17:17:15,682 INFO  L151        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2024-11-04 17:17:15,682 INFO  L153        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2024-11-04 17:17:15,682 INFO  L153        SettingsManager]:  * Only consider context switches at boundaries of atomic blocks=true
[2024-11-04 17:17:15,683 INFO  L153        SettingsManager]:  * SMT solver=External_DefaultMode
[2024-11-04 17:17:15,683 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2024-11-04 17:17:15,683 INFO  L151        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2024-11-04 17:17:15,683 INFO  L153        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2024-11-04 17:17:15,683 INFO  L153        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopHeads
[2024-11-04 17:17:15,684 INFO  L153        SettingsManager]:  * Trace refinement strategy=WOLF
[2024-11-04 17:17:15,684 INFO  L153        SettingsManager]:  * Command for external solver=cvc4 --incremental --print-success --lang smt 
[2024-11-04 17:17:15,684 INFO  L153        SettingsManager]:  * Apply one-shot large block encoding in concurrent analysis=false
[2024-11-04 17:17:15,684 INFO  L153        SettingsManager]:  * Automaton type used in concurrency analysis=PETRI_NET
[2024-11-04 17:17:15,684 INFO  L153        SettingsManager]:  * Order on configurations for Petri net unfoldings=DBO
[2024-11-04 17:17:15,685 INFO  L153        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2024-11-04 17:17:15,686 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$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Allow undefined functions -> true
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> External_ModelsAndUnsatCoreMode
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Command for external solver -> z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-04 17:17:15,904 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2024-11-04 17:17:15,929 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2024-11-04 17:17:15,932 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2024-11-04 17:17:15,933 INFO  L270        PluginConnector]: Initializing CDTParser...
[2024-11-04 17:17:15,933 INFO  L274        PluginConnector]: CDTParser initialized
[2024-11-04 17:17:15,934 INFO  L431   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.vis_arrays_vsaR_p11.c
[2024-11-04 17:17:17,358 INFO  L533              CDTParser]: Created temporary CDT project at NULL
[2024-11-04 17:17:17,637 INFO  L384              CDTParser]: Found 1 translation units.
[2024-11-04 17:17:17,638 INFO  L180              CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.vis_arrays_vsaR_p11.c
[2024-11-04 17:17:17,651 INFO  L427              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d2fa0d91b/01f09e7076f94ddb9086c8fb76d0fdbe/FLAG03f12bea7
[2024-11-04 17:17:17,669 INFO  L435              CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d2fa0d91b/01f09e7076f94ddb9086c8fb76d0fdbe
[2024-11-04 17:17:17,671 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2024-11-04 17:17:17,673 INFO  L133        ToolchainWalker]: Walking toolchain with 5 elements.
[2024-11-04 17:17:17,674 INFO  L112        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2024-11-04 17:17:17,674 INFO  L270        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2024-11-04 17:17:17,682 INFO  L274        PluginConnector]: CACSL2BoogieTranslator initialized
[2024-11-04 17:17:17,683 INFO  L184        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.11 05:17:17" (1/1) ...
[2024-11-04 17:17:17,684 INFO  L204        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4ff82f82 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 05:17:17, skipping insertion in model container
[2024-11-04 17:17:17,684 INFO  L184        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.11 05:17:17" (1/1) ...
[2024-11-04 17:17:17,757 INFO  L175         MainTranslator]: Built tables and reachable declarations
[2024-11-04 17:17:17,975 WARN  L250   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.vis_arrays_vsaR_p11.c[1259,1272]
[2024-11-04 17:17:18,213 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2024-11-04 17:17:18,228 INFO  L200         MainTranslator]: Completed pre-run
[2024-11-04 17:17:18,240 WARN  L250   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.vis_arrays_vsaR_p11.c[1259,1272]
[2024-11-04 17:17:18,360 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2024-11-04 17:17:18,376 INFO  L204         MainTranslator]: Completed translation
[2024-11-04 17:17:18,378 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 05:17:18 WrapperNode
[2024-11-04 17:17:18,379 INFO  L131        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2024-11-04 17:17:18,380 INFO  L112        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2024-11-04 17:17:18,380 INFO  L270        PluginConnector]: Initializing Boogie Procedure Inliner...
[2024-11-04 17:17:18,380 INFO  L274        PluginConnector]: Boogie Procedure Inliner initialized
[2024-11-04 17:17:18,387 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 05:17:18" (1/1) ...
[2024-11-04 17:17:18,431 INFO  L184        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 05:17:18" (1/1) ...
[2024-11-04 17:17:18,511 INFO  L138                Inliner]: procedures = 17, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1091
[2024-11-04 17:17:18,511 INFO  L131        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2024-11-04 17:17:18,512 INFO  L112        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2024-11-04 17:17:18,512 INFO  L270        PluginConnector]: Initializing Boogie Preprocessor...
[2024-11-04 17:17:18,512 INFO  L274        PluginConnector]: Boogie Preprocessor initialized
[2024-11-04 17:17:18,527 INFO  L184        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 05:17:18" (1/1) ...
[2024-11-04 17:17:18,527 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 05:17:18" (1/1) ...
[2024-11-04 17:17:18,542 INFO  L184        PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 05:17:18" (1/1) ...
[2024-11-04 17:17:18,615 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].
[2024-11-04 17:17:18,615 INFO  L184        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 05:17:18" (1/1) ...
[2024-11-04 17:17:18,615 INFO  L184        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 05:17:18" (1/1) ...
[2024-11-04 17:17:18,636 INFO  L184        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 05:17:18" (1/1) ...
[2024-11-04 17:17:18,643 INFO  L184        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 05:17:18" (1/1) ...
[2024-11-04 17:17:18,650 INFO  L184        PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 05:17:18" (1/1) ...
[2024-11-04 17:17:18,655 INFO  L184        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 05:17:18" (1/1) ...
[2024-11-04 17:17:18,667 INFO  L131        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2024-11-04 17:17:18,668 INFO  L112        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2024-11-04 17:17:18,668 INFO  L270        PluginConnector]: Initializing RCFGBuilder...
[2024-11-04 17:17:18,668 INFO  L274        PluginConnector]: RCFGBuilder initialized
[2024-11-04 17:17:18,669 INFO  L184        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 05:17:18" (1/1) ...
[2024-11-04 17:17:18,674 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2024-11-04 17:17:18,687 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2024-11-04 17:17:18,704 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)
[2024-11-04 17:17:18,713 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
[2024-11-04 17:17:18,738 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2024-11-04 17:17:18,738 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0
[2024-11-04 17:17:18,738 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2024-11-04 17:17:18,738 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2024-11-04 17:17:18,997 INFO  L238             CfgBuilder]: Building ICFG
[2024-11-04 17:17:18,999 INFO  L264             CfgBuilder]: Building CFG for each procedure with an implementation
[2024-11-04 17:17:20,238 INFO  L?                        ?]: Removed 87 outVars from TransFormulas that were not future-live.
[2024-11-04 17:17:20,239 INFO  L287             CfgBuilder]: Performing block encoding
[2024-11-04 17:17:20,254 INFO  L311             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2024-11-04 17:17:20,254 INFO  L316             CfgBuilder]: Removed 1 assume(true) statements.
[2024-11-04 17:17:20,254 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.11 05:17:20 BoogieIcfgContainer
[2024-11-04 17:17:20,255 INFO  L131        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2024-11-04 17:17:20,259 INFO  L112        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2024-11-04 17:17:20,259 INFO  L270        PluginConnector]: Initializing TraceAbstraction...
[2024-11-04 17:17:20,262 INFO  L274        PluginConnector]: TraceAbstraction initialized
[2024-11-04 17:17:20,262 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.11 05:17:17" (1/3) ...
[2024-11-04 17:17:20,263 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7292ced6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.11 05:17:20, skipping insertion in model container
[2024-11-04 17:17:20,263 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 05:17:18" (2/3) ...
[2024-11-04 17:17:20,264 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7292ced6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.11 05:17:20, skipping insertion in model container
[2024-11-04 17:17:20,264 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.11 05:17:20" (3/3) ...
[2024-11-04 17:17:20,265 INFO  L112   eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.vis_arrays_vsaR_p11.c
[2024-11-04 17:17:20,283 INFO  L214   ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2024-11-04 17:17:20,283 INFO  L154   ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2024-11-04 17:17:20,377 INFO  L332      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2024-11-04 17:17:20,383 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;@6c634917, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2024-11-04 17:17:20,384 INFO  L334      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2024-11-04 17:17:20,391 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)
[2024-11-04 17:17:20,401 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 6
[2024-11-04 17:17:20,402 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-04 17:17:20,407 INFO  L215           NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1]
[2024-11-04 17:17:20,407 INFO  L396      AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-04 17:17:20,419 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-04 17:17:20,419 INFO  L85        PathProgramCache]: Analyzing trace with hash 28694789, now seen corresponding path program 1 times
[2024-11-04 17:17:20,440 INFO  L118   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2024-11-04 17:17:20,440 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1032658761]
[2024-11-04 17:17:20,441 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-04 17:17:20,447 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-04 17:17:20,447 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2024-11-04 17:17:20,454 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)
[2024-11-04 17:17:20,485 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process
[2024-11-04 17:17:20,818 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-04 17:17:20,826 INFO  L255         TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 18 conjuncts are in the unsatisfiable core
[2024-11-04 17:17:20,838 INFO  L278         TraceCheckSpWp]: Computing forward predicates...
[2024-11-04 17:17:20,992 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-04 17:17:20,992 INFO  L311         TraceCheckSpWp]: Computing backward predicates...
[2024-11-04 17:17:21,157 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-04 17:17:21,158 INFO  L136   FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2024-11-04 17:17:21,159 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1032658761]
[2024-11-04 17:17:21,159 INFO  L158   FreeRefinementEngine]: IpTcStrategyModulePreferences [1032658761] provided 2 perfect and 0 imperfect interpolant sequences
[2024-11-04 17:17:21,160 INFO  L185   FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences.
[2024-11-04 17:17:21,160 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6
[2024-11-04 17:17:21,162 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [605861047]
[2024-11-04 17:17:21,163 INFO  L85    oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton
[2024-11-04 17:17:21,166 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2024-11-04 17:17:21,167 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2024-11-04 17:17:21,190 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2024-11-04 17:17:21,191 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30
[2024-11-04 17:17:21,193 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)
[2024-11-04 17:17:21,301 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-04 17:17:21,301 INFO  L93              Difference]: Finished difference Result 18 states and 23 transitions.
[2024-11-04 17:17:21,303 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2024-11-04 17:17:21,304 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
[2024-11-04 17:17:21,304 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-04 17:17:21,310 INFO  L225             Difference]: With dead ends: 18
[2024-11-04 17:17:21,310 INFO  L226             Difference]: Without dead ends: 10
[2024-11-04 17:17:21,313 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
[2024-11-04 17:17:21,319 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
[2024-11-04 17:17:21,321 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]
[2024-11-04 17:17:21,335 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 10 states.
[2024-11-04 17:17:21,345 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 9.
[2024-11-04 17:17:21,346 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)
[2024-11-04 17:17:21,347 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions.
[2024-11-04 17:17:21,349 INFO  L78                 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 5
[2024-11-04 17:17:21,349 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-04 17:17:21,349 INFO  L471      AbstractCegarLoop]: Abstraction has 9 states and 9 transitions.
[2024-11-04 17:17:21,349 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)
[2024-11-04 17:17:21,349 INFO  L276                IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions.
[2024-11-04 17:17:21,350 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 9
[2024-11-04 17:17:21,350 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-04 17:17:21,350 INFO  L215           NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1]
[2024-11-04 17:17:21,370 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0
[2024-11-04 17:17:21,551 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
[2024-11-04 17:17:21,552 INFO  L396      AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-04 17:17:21,553 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-04 17:17:21,553 INFO  L85        PathProgramCache]: Analyzing trace with hash 152739811, now seen corresponding path program 1 times
[2024-11-04 17:17:21,553 INFO  L118   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2024-11-04 17:17:21,553 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [791024098]
[2024-11-04 17:17:21,553 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-04 17:17:21,553 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-04 17:17:21,553 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2024-11-04 17:17:21,555 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)
[2024-11-04 17:17:21,556 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process
[2024-11-04 17:17:21,915 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-04 17:17:21,922 INFO  L255         TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 28 conjuncts are in the unsatisfiable core
[2024-11-04 17:17:21,932 INFO  L278         TraceCheckSpWp]: Computing forward predicates...
[2024-11-04 17:17:22,140 INFO  L134       CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-04 17:17:22,140 INFO  L311         TraceCheckSpWp]: Computing backward predicates...
[2024-11-04 17:17:27,395 WARN  L851   $PredicateComparison]: unable to prove that (let ((.cse6 ((_ zero_extend 24) |c_ULTIMATE.start_main_~state_25~0#1|))) (let ((.cse3 (= ((_ zero_extend 24) |c_ULTIMATE.start_main_~var_70~0#1|) .cse6))) (let ((.cse2 ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 24) ((_ extract 7 0) (bvadd ((_ zero_extend 24) |c_ULTIMATE.start_main_~var_15~0#1|) .cse6)))))) (.cse5 (not .cse3)) (.cse0 ((_ zero_extend 24) |c_ULTIMATE.start_main_~var_28~0#1|)) (.cse1 ((_ zero_extend 24) |c_ULTIMATE.start_main_~mask_SORT_1~0#1|)) (.cse4 ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 24) |c_ULTIMATE.start_main_~var_24~0#1|))))) (and (or (and (or (forall ((|ULTIMATE.start_main_~mask_SORT_10~0#1| (_ BitVec 8))) (= .cse0 ((_ zero_extend 24) ((_ extract 7 0) (bvand .cse1 ((_ zero_extend 24) ((_ extract 7 0) (bvashr ((_ zero_extend 24) ((_ extract 7 0) (bvand ((_ zero_extend 24) |ULTIMATE.start_main_~mask_SORT_10~0#1|) .cse2))) (_ bv2 32))))))))) .cse3) (or (forall ((|ULTIMATE.start_main_~mask_SORT_10~0#1| (_ BitVec 8))) (= .cse0 ((_ zero_extend 24) ((_ extract 7 0) (bvand .cse1 ((_ zero_extend 24) ((_ extract 7 0) (bvashr ((_ zero_extend 24) ((_ extract 7 0) (bvand ((_ zero_extend 24) |ULTIMATE.start_main_~mask_SORT_10~0#1|) .cse4))) (_ bv2 32))))))))) .cse5)) (forall ((|v_ULTIMATE.start_main_~var_34_arg_1~0#1_11| (_ BitVec 8)) (|v_ULTIMATE.start_main_~var_35_arg_0~0#1_11| (_ BitVec 8)) (|v_ULTIMATE.start_main_~var_40_arg_0~0#1_11| (_ BitVec 8))) (= (_ bv0 8) ((_ extract 7 0) (bvand .cse1 ((_ zero_extend 24) ((_ extract 7 0) (bvand ((_ zero_extend 24) |v_ULTIMATE.start_main_~var_40_arg_0~0#1_11|) ((_ zero_extend 24) ((_ extract 7 0) (bvnot ((_ zero_extend 24) ((_ extract 7 0) (bvor ((_ zero_extend 24) |v_ULTIMATE.start_main_~var_35_arg_0~0#1_11|) ((_ zero_extend 24) ((_ extract 7 0) (bvor (_ bv0 32) ((_ zero_extend 24) |v_ULTIMATE.start_main_~var_34_arg_1~0#1_11|)))))))))))))))))) (or (forall ((|v_ULTIMATE.start_main_~var_34_arg_1~0#1_11| (_ BitVec 8)) (|v_ULTIMATE.start_main_~var_35_arg_0~0#1_11| (_ BitVec 8)) (|v_ULTIMATE.start_main_~var_40_arg_0~0#1_11| (_ BitVec 8))) (= (_ bv0 8) ((_ extract 7 0) (bvand ((_ zero_extend 24) ((_ extract 7 0) (bvand ((_ zero_extend 24) ((_ extract 7 0) (bvnot ((_ zero_extend 24) ((_ extract 7 0) (bvor ((_ zero_extend 24) |v_ULTIMATE.start_main_~var_35_arg_0~0#1_11|) ((_ zero_extend 24) ((_ extract 7 0) (bvor (_ bv1 32) ((_ zero_extend 24) |v_ULTIMATE.start_main_~var_34_arg_1~0#1_11|)))))))))) ((_ zero_extend 24) |v_ULTIMATE.start_main_~var_40_arg_0~0#1_11|)))) .cse1)))) (and (or (forall ((|ULTIMATE.start_main_~mask_SORT_10~0#1| (_ BitVec 8))) (not (= .cse0 ((_ zero_extend 24) ((_ extract 7 0) (bvand .cse1 ((_ zero_extend 24) ((_ extract 7 0) (bvashr ((_ zero_extend 24) ((_ extract 7 0) (bvand ((_ zero_extend 24) |ULTIMATE.start_main_~mask_SORT_10~0#1|) .cse2))) (_ bv2 32)))))))))) .cse3) (or .cse5 (forall ((|ULTIMATE.start_main_~mask_SORT_10~0#1| (_ BitVec 8))) (not (= .cse0 ((_ zero_extend 24) ((_ extract 7 0) (bvand .cse1 ((_ zero_extend 24) ((_ extract 7 0) (bvashr ((_ zero_extend 24) ((_ extract 7 0) (bvand ((_ zero_extend 24) |ULTIMATE.start_main_~mask_SORT_10~0#1|) .cse4))) (_ bv2 32))))))))))))))))) is different from false
[2024-11-04 17:17:28,298 INFO  L134       CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked.
[2024-11-04 17:17:28,298 INFO  L136   FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2024-11-04 17:17:28,298 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [791024098]
[2024-11-04 17:17:28,298 INFO  L158   FreeRefinementEngine]: IpTcStrategyModulePreferences [791024098] provided 0 perfect and 2 imperfect interpolant sequences
[2024-11-04 17:17:28,299 INFO  L185   FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2024-11-04 17:17:28,299 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10
[2024-11-04 17:17:28,299 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1796496150]
[2024-11-04 17:17:28,299 INFO  L85    oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2024-11-04 17:17:28,300 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 10 states
[2024-11-04 17:17:28,300 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2024-11-04 17:17:28,301 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants.
[2024-11-04 17:17:28,301 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=49, Unknown=1, NotChecked=14, Total=90
[2024-11-04 17:17:28,301 INFO  L87              Difference]: Start difference. First operand 9 states and 9 transitions. Second operand  has 10 states, 10 states have (on average 1.4) internal successors, (14), 10 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)
[2024-11-04 17:17:28,989 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-04 17:17:28,990 INFO  L93              Difference]: Finished difference Result 15 states and 15 transitions.
[2024-11-04 17:17:28,991 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. 
[2024-11-04 17:17:28,991 INFO  L78                 Accepts]: Start accepts. Automaton has  has 10 states, 10 states have (on average 1.4) internal successors, (14), 10 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
[2024-11-04 17:17:28,991 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-04 17:17:28,992 INFO  L225             Difference]: With dead ends: 15
[2024-11-04 17:17:28,992 INFO  L226             Difference]: Without dead ends: 13
[2024-11-04 17:17:28,992 INFO  L431           NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 5.9s TimeCoverageRelationStatistics Valid=50, Invalid=85, Unknown=1, NotChecked=20, Total=156
[2024-11-04 17:17:28,993 INFO  L432           NwaCegarLoop]: 4 mSDtfsCounter, 4 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 7 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2024-11-04 17:17:28,994 INFO  L433           NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 17 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 0 Unknown, 7 Unchecked, 0.2s Time]
[2024-11-04 17:17:28,994 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 13 states.
[2024-11-04 17:17:28,997 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 12.
[2024-11-04 17:17:28,997 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 12 states, 11 states have (on average 1.0909090909090908) internal successors, (12), 11 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-04 17:17:28,997 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions.
[2024-11-04 17:17:28,997 INFO  L78                 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 8
[2024-11-04 17:17:28,998 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-04 17:17:28,998 INFO  L471      AbstractCegarLoop]: Abstraction has 12 states and 12 transitions.
[2024-11-04 17:17:28,998 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 10 states, 10 states have (on average 1.4) internal successors, (14), 10 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)
[2024-11-04 17:17:28,998 INFO  L276                IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions.
[2024-11-04 17:17:28,998 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 12
[2024-11-04 17:17:28,998 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-04 17:17:28,998 INFO  L215           NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1]
[2024-11-04 17:17:29,013 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0
[2024-11-04 17:17:29,202 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
[2024-11-04 17:17:29,203 INFO  L396      AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-04 17:17:29,204 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-04 17:17:29,204 INFO  L85        PathProgramCache]: Analyzing trace with hash 1906115653, now seen corresponding path program 2 times
[2024-11-04 17:17:29,204 INFO  L118   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2024-11-04 17:17:29,205 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [115403716]
[2024-11-04 17:17:29,205 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-04 17:17:29,205 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-04 17:17:29,205 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2024-11-04 17:17:29,209 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)
[2024-11-04 17:17:29,210 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process
[2024-11-04 17:17:29,630 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-04 17:17:29,636 INFO  L255         TraceCheckSpWp]: Trace formula consists of 238 conjuncts, 30 conjuncts are in the unsatisfiable core
[2024-11-04 17:17:29,648 INFO  L278         TraceCheckSpWp]: Computing forward predicates...
[2024-11-04 17:17:31,179 INFO  L134       CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-04 17:17:31,179 INFO  L311         TraceCheckSpWp]: Computing backward predicates...
[2024-11-04 17:17:35,381 INFO  L134       CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-04 17:17:35,381 INFO  L136   FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2024-11-04 17:17:35,381 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [115403716]
[2024-11-04 17:17:35,382 INFO  L158   FreeRefinementEngine]: IpTcStrategyModulePreferences [115403716] provided 0 perfect and 2 imperfect interpolant sequences
[2024-11-04 17:17:35,382 INFO  L185   FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2024-11-04 17:17:35,383 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12
[2024-11-04 17:17:35,383 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [194107813]
[2024-11-04 17:17:35,383 INFO  L85    oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2024-11-04 17:17:35,386 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 12 states
[2024-11-04 17:17:35,387 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2024-11-04 17:17:35,387 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants.
[2024-11-04 17:17:35,388 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132
[2024-11-04 17:17:35,388 INFO  L87              Difference]: Start difference. First operand 12 states and 12 transitions. Second operand  has 12 states, 12 states have (on average 1.6666666666666667) internal successors, (20), 12 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-04 17:17:37,150 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-04 17:17:37,150 INFO  L93              Difference]: Finished difference Result 21 states and 22 transitions.
[2024-11-04 17:17:37,151 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2024-11-04 17:17:37,152 INFO  L78                 Accepts]: Start accepts. Automaton has  has 12 states, 12 states have (on average 1.6666666666666667) internal successors, (20), 12 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11
[2024-11-04 17:17:37,152 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-04 17:17:37,152 INFO  L225             Difference]: With dead ends: 21
[2024-11-04 17:17:37,153 INFO  L226             Difference]: Without dead ends: 19
[2024-11-04 17:17:37,153 INFO  L431           NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=77, Invalid=195, Unknown=0, NotChecked=0, Total=272
[2024-11-04 17:17:37,154 INFO  L432           NwaCegarLoop]: 4 mSDtfsCounter, 4 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time
[2024-11-04 17:17:37,155 INFO  L433           NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 24 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time]
[2024-11-04 17:17:37,155 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 19 states.
[2024-11-04 17:17:37,158 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 18.
[2024-11-04 17:17:37,158 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 18 states, 17 states have (on average 1.0588235294117647) internal successors, (18), 17 states have internal predecessors, (18), 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)
[2024-11-04 17:17:37,159 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 18 transitions.
[2024-11-04 17:17:37,159 INFO  L78                 Accepts]: Start accepts. Automaton has 18 states and 18 transitions. Word has length 11
[2024-11-04 17:17:37,159 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-04 17:17:37,159 INFO  L471      AbstractCegarLoop]: Abstraction has 18 states and 18 transitions.
[2024-11-04 17:17:37,159 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 12 states, 12 states have (on average 1.6666666666666667) internal successors, (20), 12 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-04 17:17:37,159 INFO  L276                IsEmpty]: Start isEmpty. Operand 18 states and 18 transitions.
[2024-11-04 17:17:37,160 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 18
[2024-11-04 17:17:37,160 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-04 17:17:37,160 INFO  L215           NwaCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1]
[2024-11-04 17:17:37,176 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0
[2024-11-04 17:17:37,360 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-04 17:17:37,361 INFO  L396      AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-04 17:17:37,361 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-04 17:17:37,362 INFO  L85        PathProgramCache]: Analyzing trace with hash -37306491, now seen corresponding path program 3 times
[2024-11-04 17:17:37,362 INFO  L118   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2024-11-04 17:17:37,362 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [177613191]
[2024-11-04 17:17:37,362 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-04 17:17:37,362 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-04 17:17:37,362 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2024-11-04 17:17:37,363 INFO  L229       MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-04 17:17:37,364 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process
[2024-11-04 17:17:37,881 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-04 17:17:37,895 INFO  L255         TraceCheckSpWp]: Trace formula consists of 360 conjuncts, 155 conjuncts are in the unsatisfiable core
[2024-11-04 17:17:37,951 INFO  L278         TraceCheckSpWp]: Computing forward predicates...