/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-32bit-Automizer_Bitvector.epf -i ../../../trunk/examples/svcomp/bitvector-loops/verisec_sendmail_tTflag_arr_one_loop.c


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


This is Ultimate 0.2.5-dev-b75d321-m
[2024-11-02 22:41:21,908 INFO  L188        SettingsManager]: Resetting all preferences to default values...
[2024-11-02 22:41:21,966 INFO  L114        SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf
[2024-11-02 22:41:21,971 WARN  L101        SettingsManager]: Preference file contains the following unknown settings:
[2024-11-02 22:41:21,971 WARN  L103        SettingsManager]:   * de.uni_freiburg.informatik.ultimate.core.Log level for class
[2024-11-02 22:41:21,987 INFO  L130        SettingsManager]: Preferences different from defaults after loading the file:
[2024-11-02 22:41:21,987 INFO  L151        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2024-11-02 22:41:21,987 INFO  L153        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2024-11-02 22:41:21,988 INFO  L151        SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults:
[2024-11-02 22:41:21,988 INFO  L153        SettingsManager]:  * Use memory slicer=true
[2024-11-02 22:41:21,989 INFO  L151        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2024-11-02 22:41:21,989 INFO  L153        SettingsManager]:  * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2024-11-02 22:41:21,990 INFO  L151        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2024-11-02 22:41:21,992 INFO  L153        SettingsManager]:  * Create parallel compositions if possible=false
[2024-11-02 22:41:21,992 INFO  L153        SettingsManager]:  * Use SBE=true
[2024-11-02 22:41:21,993 INFO  L151        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2024-11-02 22:41:21,993 INFO  L153        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2024-11-02 22:41:21,993 INFO  L153        SettingsManager]:  * sizeof long=4
[2024-11-02 22:41:21,993 INFO  L153        SettingsManager]:  * sizeof POINTER=4
[2024-11-02 22:41:21,993 INFO  L153        SettingsManager]:  * Check division by zero=IGNORE
[2024-11-02 22:41:21,993 INFO  L153        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2024-11-02 22:41:21,995 INFO  L153        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2024-11-02 22:41:21,995 INFO  L153        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2024-11-02 22:41:21,995 INFO  L153        SettingsManager]:  * Adapt memory model on pointer casts if necessary=true
[2024-11-02 22:41:21,995 INFO  L153        SettingsManager]:  * Use bitvectors instead of ints=true
[2024-11-02 22:41:21,996 INFO  L153        SettingsManager]:  * Allow undefined functions=false
[2024-11-02 22:41:21,996 INFO  L153        SettingsManager]:  * Memory model=HoenickeLindenmann_4ByteResolution
[2024-11-02 22:41:21,996 INFO  L153        SettingsManager]:  * sizeof long double=12
[2024-11-02 22:41:21,996 INFO  L153        SettingsManager]:  * Check if freed pointer was valid=false
[2024-11-02 22:41:21,996 INFO  L153        SettingsManager]:  * Use constant arrays=true
[2024-11-02 22:41:21,996 INFO  L151        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2024-11-02 22:41:21,996 INFO  L153        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2024-11-02 22:41:21,997 INFO  L153        SettingsManager]:  * Only consider context switches at boundaries of atomic blocks=true
[2024-11-02 22:41:21,997 INFO  L153        SettingsManager]:  * SMT solver=External_DefaultMode
[2024-11-02 22:41:21,997 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2024-11-02 22:41:21,997 INFO  L151        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2024-11-02 22:41:21,997 INFO  L153        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2024-11-02 22:41:21,997 INFO  L153        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopHeads
[2024-11-02 22:41:21,997 INFO  L153        SettingsManager]:  * Trace refinement strategy=WOLF
[2024-11-02 22:41:21,997 INFO  L153        SettingsManager]:  * Command for external solver=cvc4 --incremental --print-success --lang smt
[2024-11-02 22:41:21,998 INFO  L153        SettingsManager]:  * Apply one-shot large block encoding in concurrent analysis=false
[2024-11-02 22:41:21,998 INFO  L153        SettingsManager]:  * Automaton type used in concurrency analysis=PETRI_NET
[2024-11-02 22:41:21,998 INFO  L153        SettingsManager]:  * Order on configurations for Petri net unfoldings=DBO
[2024-11-02 22:41:21,999 INFO  L153        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2024-11-02 22:41:21,999 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$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Allow undefined functions -> true
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> External_ModelsAndUnsatCoreMode
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Command for external solver -> z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-02 22:41:22,172 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2024-11-02 22:41:22,189 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2024-11-02 22:41:22,191 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2024-11-02 22:41:22,192 INFO  L270        PluginConnector]: Initializing CDTParser...
[2024-11-02 22:41:22,192 INFO  L274        PluginConnector]: CDTParser initialized
[2024-11-02 22:41:22,193 INFO  L431   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/bitvector-loops/verisec_sendmail_tTflag_arr_one_loop.c
[2024-11-02 22:41:23,356 INFO  L533              CDTParser]: Created temporary CDT project at NULL
[2024-11-02 22:41:23,500 INFO  L384              CDTParser]: Found 1 translation units.
[2024-11-02 22:41:23,500 INFO  L180              CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/bitvector-loops/verisec_sendmail_tTflag_arr_one_loop.c
[2024-11-02 22:41:23,505 INFO  L427              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/786e5181e/c0b6a25da2da461888e46b8d06e74780/FLAG557348c72
[2024-11-02 22:41:23,937 INFO  L435              CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/786e5181e/c0b6a25da2da461888e46b8d06e74780
[2024-11-02 22:41:23,939 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2024-11-02 22:41:23,939 INFO  L133        ToolchainWalker]: Walking toolchain with 5 elements.
[2024-11-02 22:41:23,940 INFO  L112        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2024-11-02 22:41:23,940 INFO  L270        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2024-11-02 22:41:23,950 INFO  L274        PluginConnector]: CACSL2BoogieTranslator initialized
[2024-11-02 22:41:23,950 INFO  L184        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 10:41:23" (1/1) ...
[2024-11-02 22:41:23,951 INFO  L204        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3a8bb462 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:41:23, skipping insertion in model container
[2024-11-02 22:41:23,951 INFO  L184        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 10:41:23" (1/1) ...
[2024-11-02 22:41:23,962 INFO  L175         MainTranslator]: Built tables and reachable declarations
[2024-11-02 22:41:24,081 WARN  L250   ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/bitvector-loops/verisec_sendmail_tTflag_arr_one_loop.c[387,400]
[2024-11-02 22:41:24,092 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2024-11-02 22:41:24,098 INFO  L200         MainTranslator]: Completed pre-run
[2024-11-02 22:41:24,105 WARN  L250   ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/bitvector-loops/verisec_sendmail_tTflag_arr_one_loop.c[387,400]
[2024-11-02 22:41:24,109 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2024-11-02 22:41:24,120 INFO  L204         MainTranslator]: Completed translation
[2024-11-02 22:41:24,120 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:41:24 WrapperNode
[2024-11-02 22:41:24,121 INFO  L131        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2024-11-02 22:41:24,121 INFO  L112        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2024-11-02 22:41:24,121 INFO  L270        PluginConnector]: Initializing Boogie Procedure Inliner...
[2024-11-02 22:41:24,121 INFO  L274        PluginConnector]: Boogie Procedure Inliner initialized
[2024-11-02 22:41:24,126 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:41:24" (1/1) ...
[2024-11-02 22:41:24,130 INFO  L184        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:41:24" (1/1) ...
[2024-11-02 22:41:24,142 INFO  L138                Inliner]: procedures = 14, calls = 15, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 57
[2024-11-02 22:41:24,142 INFO  L131        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2024-11-02 22:41:24,143 INFO  L112        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2024-11-02 22:41:24,143 INFO  L270        PluginConnector]: Initializing Boogie Preprocessor...
[2024-11-02 22:41:24,143 INFO  L274        PluginConnector]: Boogie Preprocessor initialized
[2024-11-02 22:41:24,149 INFO  L184        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:41:24" (1/1) ...
[2024-11-02 22:41:24,149 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:41:24" (1/1) ...
[2024-11-02 22:41:24,150 INFO  L184        PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:41:24" (1/1) ...
[2024-11-02 22:41:24,160 INFO  L175           MemorySlicer]: Split 6 memory accesses to 2 slices as follows [2, 4]. 67 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 2 writes are split as follows [0, 2].
[2024-11-02 22:41:24,160 INFO  L184        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:41:24" (1/1) ...
[2024-11-02 22:41:24,160 INFO  L184        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:41:24" (1/1) ...
[2024-11-02 22:41:24,164 INFO  L184        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:41:24" (1/1) ...
[2024-11-02 22:41:24,168 INFO  L184        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:41:24" (1/1) ...
[2024-11-02 22:41:24,169 INFO  L184        PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:41:24" (1/1) ...
[2024-11-02 22:41:24,170 INFO  L184        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:41:24" (1/1) ...
[2024-11-02 22:41:24,171 INFO  L131        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2024-11-02 22:41:24,172 INFO  L112        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2024-11-02 22:41:24,172 INFO  L270        PluginConnector]: Initializing RCFGBuilder...
[2024-11-02 22:41:24,172 INFO  L274        PluginConnector]: RCFGBuilder initialized
[2024-11-02 22:41:24,172 INFO  L184        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:41:24" (1/1) ...
[2024-11-02 22:41:24,176 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2024-11-02 22:41:24,182 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2024-11-02 22:41:24,197 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)
[2024-11-02 22:41:24,199 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
[2024-11-02 22:41:24,215 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2024-11-02 22:41:24,215 INFO  L130     BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#0
[2024-11-02 22:41:24,215 INFO  L130     BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#1
[2024-11-02 22:41:24,215 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0
[2024-11-02 22:41:24,215 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1
[2024-11-02 22:41:24,215 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack
[2024-11-02 22:41:24,215 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2024-11-02 22:41:24,216 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2024-11-02 22:41:24,216 INFO  L130     BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#0
[2024-11-02 22:41:24,216 INFO  L130     BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#1
[2024-11-02 22:41:24,216 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc
[2024-11-02 22:41:24,272 INFO  L238             CfgBuilder]: Building ICFG
[2024-11-02 22:41:24,274 INFO  L264             CfgBuilder]: Building CFG for each procedure with an implementation
[2024-11-02 22:41:24,371 INFO  L?                        ?]: Removed 12 outVars from TransFormulas that were not future-live.
[2024-11-02 22:41:24,371 INFO  L287             CfgBuilder]: Performing block encoding
[2024-11-02 22:41:24,384 INFO  L311             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2024-11-02 22:41:24,385 INFO  L316             CfgBuilder]: Removed 2 assume(true) statements.
[2024-11-02 22:41:24,385 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 10:41:24 BoogieIcfgContainer
[2024-11-02 22:41:24,385 INFO  L131        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2024-11-02 22:41:24,387 INFO  L112        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2024-11-02 22:41:24,388 INFO  L270        PluginConnector]: Initializing TraceAbstraction...
[2024-11-02 22:41:24,390 INFO  L274        PluginConnector]: TraceAbstraction initialized
[2024-11-02 22:41:24,390 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 10:41:23" (1/3) ...
[2024-11-02 22:41:24,391 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4789e6d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 10:41:24, skipping insertion in model container
[2024-11-02 22:41:24,391 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:41:24" (2/3) ...
[2024-11-02 22:41:24,391 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4789e6d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 10:41:24, skipping insertion in model container
[2024-11-02 22:41:24,391 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 10:41:24" (3/3) ...
[2024-11-02 22:41:24,392 INFO  L112   eAbstractionObserver]: Analyzing ICFG verisec_sendmail_tTflag_arr_one_loop.c
[2024-11-02 22:41:24,404 INFO  L214   ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2024-11-02 22:41:24,404 INFO  L154   ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2024-11-02 22:41:24,435 INFO  L332      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2024-11-02 22:41:24,439 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;@36e02dc1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2024-11-02 22:41:24,439 INFO  L334      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2024-11-02 22:41:24,442 INFO  L276                IsEmpty]: Start isEmpty. Operand  has 14 states, 12 states have (on average 1.5) internal successors, (18), 13 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)
[2024-11-02 22:41:24,445 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 9
[2024-11-02 22:41:24,445 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-02 22:41:24,445 INFO  L215           NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-02 22:41:24,445 INFO  L396      AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-02 22:41:24,448 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-02 22:41:24,448 INFO  L85        PathProgramCache]: Analyzing trace with hash 212076531, now seen corresponding path program 1 times
[2024-11-02 22:41:24,454 INFO  L118   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2024-11-02 22:41:24,454 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [877342084]
[2024-11-02 22:41:24,454 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-02 22:41:24,455 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-02 22:41:24,455 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2024-11-02 22:41:24,457 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)
[2024-11-02 22:41:24,457 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process
[2024-11-02 22:41:24,541 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-02 22:41:24,543 INFO  L255         TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 2 conjuncts are in the unsatisfiable core
[2024-11-02 22:41:24,546 INFO  L278         TraceCheckSpWp]: Computing forward predicates...
[2024-11-02 22:41:24,569 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-02 22:41:24,569 INFO  L311         TraceCheckSpWp]: Computing backward predicates...
[2024-11-02 22:41:24,578 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-02 22:41:24,578 INFO  L136   FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2024-11-02 22:41:24,578 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [877342084]
[2024-11-02 22:41:24,579 INFO  L158   FreeRefinementEngine]: IpTcStrategyModulePreferences [877342084] provided 2 perfect and 0 imperfect interpolant sequences
[2024-11-02 22:41:24,579 INFO  L185   FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences.
[2024-11-02 22:41:24,579 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4
[2024-11-02 22:41:24,580 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [671718969]
[2024-11-02 22:41:24,581 INFO  L85    oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton
[2024-11-02 22:41:24,583 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2024-11-02 22:41:24,583 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2024-11-02 22:41:24,596 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2024-11-02 22:41:24,597 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2024-11-02 22:41:24,598 INFO  L87              Difference]: Start difference. First operand  has 14 states, 12 states have (on average 1.5) internal successors, (18), 13 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) Second operand  has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 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)
[2024-11-02 22:41:24,635 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-02 22:41:24,636 INFO  L93              Difference]: Finished difference Result 31 states and 45 transitions.
[2024-11-02 22:41:24,637 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2024-11-02 22:41:24,638 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 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
[2024-11-02 22:41:24,638 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-02 22:41:24,642 INFO  L225             Difference]: With dead ends: 31
[2024-11-02 22:41:24,642 INFO  L226             Difference]: Without dead ends: 17
[2024-11-02 22:41:24,644 INFO  L431           NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2024-11-02 22:41:24,646 INFO  L432           NwaCegarLoop]: 11 mSDtfsCounter, 4 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2024-11-02 22:41:24,647 INFO  L433           NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 25 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2024-11-02 22:41:24,659 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 17 states.
[2024-11-02 22:41:24,667 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 13.
[2024-11-02 22:41:24,668 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 13 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)
[2024-11-02 22:41:24,668 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 14 transitions.
[2024-11-02 22:41:24,669 INFO  L78                 Accepts]: Start accepts. Automaton has 13 states and 14 transitions. Word has length 8
[2024-11-02 22:41:24,669 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-02 22:41:24,669 INFO  L471      AbstractCegarLoop]: Abstraction has 13 states and 14 transitions.
[2024-11-02 22:41:24,670 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 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)
[2024-11-02 22:41:24,670 INFO  L276                IsEmpty]: Start isEmpty. Operand 13 states and 14 transitions.
[2024-11-02 22:41:24,670 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 13
[2024-11-02 22:41:24,671 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-02 22:41:24,671 INFO  L215           NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-02 22:41:24,684 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0
[2024-11-02 22:41:24,871 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
[2024-11-02 22:41:24,873 INFO  L396      AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-02 22:41:24,874 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-02 22:41:24,874 INFO  L85        PathProgramCache]: Analyzing trace with hash 780776823, now seen corresponding path program 1 times
[2024-11-02 22:41:24,874 INFO  L118   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2024-11-02 22:41:24,875 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [374680598]
[2024-11-02 22:41:24,875 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-02 22:41:24,875 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-02 22:41:24,875 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2024-11-02 22:41:24,876 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)
[2024-11-02 22:41:24,879 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process
[2024-11-02 22:41:24,934 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-02 22:41:24,936 INFO  L255         TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 4 conjuncts are in the unsatisfiable core
[2024-11-02 22:41:24,937 INFO  L278         TraceCheckSpWp]: Computing forward predicates...
[2024-11-02 22:41:24,974 INFO  L134       CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked.
[2024-11-02 22:41:24,974 INFO  L311         TraceCheckSpWp]: Computing backward predicates...
[2024-11-02 22:41:24,997 INFO  L134       CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked.
[2024-11-02 22:41:24,997 INFO  L136   FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2024-11-02 22:41:24,998 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [374680598]
[2024-11-02 22:41:24,998 INFO  L158   FreeRefinementEngine]: IpTcStrategyModulePreferences [374680598] provided 2 perfect and 0 imperfect interpolant sequences
[2024-11-02 22:41:24,998 INFO  L185   FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences.
[2024-11-02 22:41:24,998 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6
[2024-11-02 22:41:24,998 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1761597439]
[2024-11-02 22:41:24,998 INFO  L85    oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton
[2024-11-02 22:41:24,999 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2024-11-02 22:41:24,999 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2024-11-02 22:41:25,000 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2024-11-02 22:41:25,000 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30
[2024-11-02 22:41:25,000 INFO  L87              Difference]: Start difference. First operand 13 states and 14 transitions. Second operand  has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 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)
[2024-11-02 22:41:25,037 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-02 22:41:25,037 INFO  L93              Difference]: Finished difference Result 21 states and 23 transitions.
[2024-11-02 22:41:25,038 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2024-11-02 22:41:25,038 INFO  L78                 Accepts]: Start accepts. Automaton has  has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 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 12
[2024-11-02 22:41:25,038 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-02 22:41:25,038 INFO  L225             Difference]: With dead ends: 21
[2024-11-02 22:41:25,039 INFO  L226             Difference]: Without dead ends: 16
[2024-11-02 22:41:25,039 INFO  L431           NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30
[2024-11-02 22:41:25,040 INFO  L432           NwaCegarLoop]: 7 mSDtfsCounter, 2 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2024-11-02 22:41:25,040 INFO  L433           NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 27 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2024-11-02 22:41:25,041 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 16 states.
[2024-11-02 22:41:25,045 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 15.
[2024-11-02 22:41:25,045 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 15 states, 14 states have (on average 1.1428571428571428) internal successors, (16), 14 states have internal predecessors, (16), 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)
[2024-11-02 22:41:25,046 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions.
[2024-11-02 22:41:25,046 INFO  L78                 Accepts]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 12
[2024-11-02 22:41:25,046 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-02 22:41:25,046 INFO  L471      AbstractCegarLoop]: Abstraction has 15 states and 16 transitions.
[2024-11-02 22:41:25,047 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 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)
[2024-11-02 22:41:25,047 INFO  L276                IsEmpty]: Start isEmpty. Operand 15 states and 16 transitions.
[2024-11-02 22:41:25,047 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 15
[2024-11-02 22:41:25,047 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-02 22:41:25,048 INFO  L215           NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-02 22:41:25,060 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0
[2024-11-02 22:41:25,248 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
[2024-11-02 22:41:25,250 INFO  L396      AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-02 22:41:25,250 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-02 22:41:25,251 INFO  L85        PathProgramCache]: Analyzing trace with hash -1239457577, now seen corresponding path program 1 times
[2024-11-02 22:41:25,251 INFO  L118   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2024-11-02 22:41:25,251 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1411232821]
[2024-11-02 22:41:25,251 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-02 22:41:25,251 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-02 22:41:25,251 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2024-11-02 22:41:25,253 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)
[2024-11-02 22:41:25,254 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process
[2024-11-02 22:41:25,316 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-02 22:41:25,319 INFO  L255         TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 4 conjuncts are in the unsatisfiable core
[2024-11-02 22:41:25,320 INFO  L278         TraceCheckSpWp]: Computing forward predicates...
[2024-11-02 22:41:25,351 INFO  L134       CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked.
[2024-11-02 22:41:25,352 INFO  L311         TraceCheckSpWp]: Computing backward predicates...
[2024-11-02 22:41:25,400 INFO  L134       CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked.
[2024-11-02 22:41:25,400 INFO  L136   FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2024-11-02 22:41:25,400 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1411232821]
[2024-11-02 22:41:25,400 INFO  L158   FreeRefinementEngine]: IpTcStrategyModulePreferences [1411232821] provided 0 perfect and 2 imperfect interpolant sequences
[2024-11-02 22:41:25,400 INFO  L185   FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2024-11-02 22:41:25,401 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8
[2024-11-02 22:41:25,401 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [498500660]
[2024-11-02 22:41:25,401 INFO  L85    oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2024-11-02 22:41:25,401 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 8 states
[2024-11-02 22:41:25,401 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2024-11-02 22:41:25,402 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2024-11-02 22:41:25,402 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56
[2024-11-02 22:41:25,403 INFO  L87              Difference]: Start difference. First operand 15 states and 16 transitions. Second operand  has 8 states, 8 states have (on average 2.375) internal successors, (19), 8 states have internal predecessors, (19), 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)
[2024-11-02 22:41:25,480 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-02 22:41:25,480 INFO  L93              Difference]: Finished difference Result 31 states and 36 transitions.
[2024-11-02 22:41:25,481 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. 
[2024-11-02 22:41:25,481 INFO  L78                 Accepts]: Start accepts. Automaton has  has 8 states, 8 states have (on average 2.375) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14
[2024-11-02 22:41:25,481 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-02 22:41:25,481 INFO  L225             Difference]: With dead ends: 31
[2024-11-02 22:41:25,481 INFO  L226             Difference]: Without dead ends: 23
[2024-11-02 22:41:25,482 INFO  L431           NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90
[2024-11-02 22:41:25,483 INFO  L432           NwaCegarLoop]: 8 mSDtfsCounter, 5 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2024-11-02 22:41:25,483 INFO  L433           NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 24 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2024-11-02 22:41:25,483 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 23 states.
[2024-11-02 22:41:25,489 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23.
[2024-11-02 22:41:25,489 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 23 states, 22 states have (on average 1.0909090909090908) internal successors, (24), 22 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-02 22:41:25,490 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 24 transitions.
[2024-11-02 22:41:25,490 INFO  L78                 Accepts]: Start accepts. Automaton has 23 states and 24 transitions. Word has length 14
[2024-11-02 22:41:25,490 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-02 22:41:25,490 INFO  L471      AbstractCegarLoop]: Abstraction has 23 states and 24 transitions.
[2024-11-02 22:41:25,491 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 8 states, 8 states have (on average 2.375) internal successors, (19), 8 states have internal predecessors, (19), 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)
[2024-11-02 22:41:25,491 INFO  L276                IsEmpty]: Start isEmpty. Operand 23 states and 24 transitions.
[2024-11-02 22:41:25,492 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 23
[2024-11-02 22:41:25,492 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-02 22:41:25,492 INFO  L215           NwaCegarLoop]: trace histogram [6, 6, 2, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-02 22:41:25,505 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0
[2024-11-02 22:41:25,692 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
[2024-11-02 22:41:25,693 INFO  L396      AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-02 22:41:25,693 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-02 22:41:25,693 INFO  L85        PathProgramCache]: Analyzing trace with hash 258175967, now seen corresponding path program 2 times
[2024-11-02 22:41:25,693 INFO  L118   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2024-11-02 22:41:25,693 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1281775993]
[2024-11-02 22:41:25,694 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-02 22:41:25,694 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-02 22:41:25,694 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2024-11-02 22:41:25,695 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)
[2024-11-02 22:41:25,696 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process
[2024-11-02 22:41:25,748 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-02 22:41:25,752 INFO  L255         TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 14 conjuncts are in the unsatisfiable core
[2024-11-02 22:41:25,754 INFO  L278         TraceCheckSpWp]: Computing forward predicates...
[2024-11-02 22:41:25,960 INFO  L134       CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked.
[2024-11-02 22:41:25,960 INFO  L311         TraceCheckSpWp]: Computing backward predicates...
[2024-11-02 22:41:26,189 INFO  L134       CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked.
[2024-11-02 22:41:26,189 INFO  L136   FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2024-11-02 22:41:26,189 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1281775993]
[2024-11-02 22:41:26,189 INFO  L158   FreeRefinementEngine]: IpTcStrategyModulePreferences [1281775993] provided 0 perfect and 2 imperfect interpolant sequences
[2024-11-02 22:41:26,189 INFO  L185   FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2024-11-02 22:41:26,190 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10
[2024-11-02 22:41:26,190 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1274419852]
[2024-11-02 22:41:26,190 INFO  L85    oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2024-11-02 22:41:26,190 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 10 states
[2024-11-02 22:41:26,190 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2024-11-02 22:41:26,191 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants.
[2024-11-02 22:41:26,192 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90
[2024-11-02 22:41:26,192 INFO  L87              Difference]: Start difference. First operand 23 states and 24 transitions. Second operand  has 10 states, 10 states have (on average 2.1) internal successors, (21), 10 states have internal predecessors, (21), 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)
[2024-11-02 22:41:26,585 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-02 22:41:26,585 INFO  L93              Difference]: Finished difference Result 34 states and 38 transitions.
[2024-11-02 22:41:26,586 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. 
[2024-11-02 22:41:26,586 INFO  L78                 Accepts]: Start accepts. Automaton has  has 10 states, 10 states have (on average 2.1) internal successors, (21), 10 states have internal predecessors, (21), 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 22
[2024-11-02 22:41:26,586 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-02 22:41:26,586 INFO  L225             Difference]: With dead ends: 34
[2024-11-02 22:41:26,586 INFO  L226             Difference]: Without dead ends: 27
[2024-11-02 22:41:26,587 INFO  L431           NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132
[2024-11-02 22:41:26,588 INFO  L432           NwaCegarLoop]: 6 mSDtfsCounter, 12 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2024-11-02 22:41:26,589 INFO  L433           NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 25 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2024-11-02 22:41:26,590 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 27 states.
[2024-11-02 22:41:26,598 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27.
[2024-11-02 22:41:26,598 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 27 states, 26 states have (on average 1.0769230769230769) internal successors, (28), 26 states have internal predecessors, (28), 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)
[2024-11-02 22:41:26,599 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 28 transitions.
[2024-11-02 22:41:26,599 INFO  L78                 Accepts]: Start accepts. Automaton has 27 states and 28 transitions. Word has length 22
[2024-11-02 22:41:26,599 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-02 22:41:26,599 INFO  L471      AbstractCegarLoop]: Abstraction has 27 states and 28 transitions.
[2024-11-02 22:41:26,599 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 10 states, 10 states have (on average 2.1) internal successors, (21), 10 states have internal predecessors, (21), 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)
[2024-11-02 22:41:26,600 INFO  L276                IsEmpty]: Start isEmpty. Operand 27 states and 28 transitions.
[2024-11-02 22:41:26,600 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 27
[2024-11-02 22:41:26,600 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-02 22:41:26,600 INFO  L215           NwaCegarLoop]: trace histogram [6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-02 22:41:26,614 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0
[2024-11-02 22:41:26,801 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-02 22:41:26,801 INFO  L396      AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-02 22:41:26,801 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-02 22:41:26,802 INFO  L85        PathProgramCache]: Analyzing trace with hash -159646049, now seen corresponding path program 3 times
[2024-11-02 22:41:26,802 INFO  L118   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2024-11-02 22:41:26,802 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1305734494]
[2024-11-02 22:41:26,802 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-02 22:41:26,802 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-02 22:41:26,802 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2024-11-02 22:41:26,804 INFO  L229       MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-02 22:41:26,805 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process
[2024-11-02 22:41:26,872 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-02 22:41:26,876 INFO  L255         TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 30 conjuncts are in the unsatisfiable core
[2024-11-02 22:41:26,881 INFO  L278         TraceCheckSpWp]: Computing forward predicates...
[2024-11-02 22:42:06,833 INFO  L134       CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 31 refuted. 1 times theorem prover too weak. 25 trivial. 0 not checked.
[2024-11-02 22:42:06,833 INFO  L311         TraceCheckSpWp]: Computing backward predicates...