/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.unsafe_intersymbol_analog_estimation_convergence.c


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


This is Ultimate 0.2.5-dev-356b6ba-m
[2024-11-01 05:41:55,756 INFO  L188        SettingsManager]: Resetting all preferences to default values...
[2024-11-01 05:41:55,842 INFO  L114        SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Bitvector.epf
[2024-11-01 05:41:55,850 WARN  L101        SettingsManager]: Preference file contains the following unknown settings:
[2024-11-01 05:41:55,851 WARN  L103        SettingsManager]:   * de.uni_freiburg.informatik.ultimate.core.Log level for class
[2024-11-01 05:41:55,883 INFO  L130        SettingsManager]: Preferences different from defaults after loading the file:
[2024-11-01 05:41:55,884 INFO  L151        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2024-11-01 05:41:55,888 INFO  L153        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2024-11-01 05:41:55,888 INFO  L151        SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults:
[2024-11-01 05:41:55,889 INFO  L153        SettingsManager]:  * Use memory slicer=true
[2024-11-01 05:41:55,889 INFO  L151        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2024-11-01 05:41:55,889 INFO  L153        SettingsManager]:  * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2024-11-01 05:41:55,890 INFO  L151        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2024-11-01 05:41:55,890 INFO  L153        SettingsManager]:  * Create parallel compositions if possible=false
[2024-11-01 05:41:55,891 INFO  L153        SettingsManager]:  * Use SBE=true
[2024-11-01 05:41:55,892 INFO  L151        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2024-11-01 05:41:55,894 INFO  L153        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2024-11-01 05:41:55,896 INFO  L153        SettingsManager]:  * Check division by zero=IGNORE
[2024-11-01 05:41:55,896 INFO  L153        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2024-11-01 05:41:55,896 INFO  L153        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2024-11-01 05:41:55,896 INFO  L153        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2024-11-01 05:41:55,897 INFO  L153        SettingsManager]:  * Adapt memory model on pointer casts if necessary=true
[2024-11-01 05:41:55,897 INFO  L153        SettingsManager]:  * Use bitvectors instead of ints=true
[2024-11-01 05:41:55,897 INFO  L153        SettingsManager]:  * Allow undefined functions=false
[2024-11-01 05:41:55,897 INFO  L153        SettingsManager]:  * Memory model=HoenickeLindenmann_4ByteResolution
[2024-11-01 05:41:55,898 INFO  L153        SettingsManager]:  * Check if freed pointer was valid=false
[2024-11-01 05:41:55,898 INFO  L153        SettingsManager]:  * Use constant arrays=true
[2024-11-01 05:41:55,898 INFO  L151        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2024-11-01 05:41:55,899 INFO  L153        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2024-11-01 05:41:55,899 INFO  L153        SettingsManager]:  * Only consider context switches at boundaries of atomic blocks=true
[2024-11-01 05:41:55,899 INFO  L153        SettingsManager]:  * SMT solver=External_DefaultMode
[2024-11-01 05:41:55,899 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2024-11-01 05:41:55,900 INFO  L151        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2024-11-01 05:41:55,900 INFO  L153        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2024-11-01 05:41:55,902 INFO  L153        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopHeads
[2024-11-01 05:41:55,902 INFO  L153        SettingsManager]:  * Trace refinement strategy=WOLF
[2024-11-01 05:41:55,903 INFO  L153        SettingsManager]:  * Command for external solver=cvc4 --incremental --print-success --lang smt 
[2024-11-01 05:41:55,903 INFO  L153        SettingsManager]:  * Apply one-shot large block encoding in concurrent analysis=false
[2024-11-01 05:41:55,903 INFO  L153        SettingsManager]:  * Automaton type used in concurrency analysis=PETRI_NET
[2024-11-01 05:41:55,903 INFO  L153        SettingsManager]:  * Order on configurations for Petri net unfoldings=DBO
[2024-11-01 05:41:55,904 INFO  L153        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2024-11-01 05:41:55,904 INFO  L153        SettingsManager]:  * Logic for external solver=AUFBV
[2024-11-01 05:41:55,904 INFO  L153        SettingsManager]:  * Looper check in Petri net analysis=SEMANTIC
WARNING: An illegal reflective access operation has occurred
WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int)
WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Allow undefined functions -> true
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> External_ModelsAndUnsatCoreMode
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Command for external solver -> z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-01 05:41:56,230 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2024-11-01 05:41:56,254 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2024-11-01 05:41:56,256 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2024-11-01 05:41:56,257 INFO  L270        PluginConnector]: Initializing CDTParser...
[2024-11-01 05:41:56,257 INFO  L274        PluginConnector]: CDTParser initialized
[2024-11-01 05:41:56,258 INFO  L431   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.unsafe_intersymbol_analog_estimation_convergence.c
[2024-11-01 05:41:57,774 INFO  L533              CDTParser]: Created temporary CDT project at NULL
[2024-11-01 05:41:58,052 INFO  L384              CDTParser]: Found 1 translation units.
[2024-11-01 05:41:58,052 INFO  L180              CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.unsafe_intersymbol_analog_estimation_convergence.c
[2024-11-01 05:41:58,066 INFO  L427              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bc738a6d0/7e64201ff0e5406fbb5d35f4c47ea107/FLAGf3666b35a
[2024-11-01 05:41:58,078 INFO  L435              CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bc738a6d0/7e64201ff0e5406fbb5d35f4c47ea107
[2024-11-01 05:41:58,080 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2024-11-01 05:41:58,081 INFO  L133        ToolchainWalker]: Walking toolchain with 5 elements.
[2024-11-01 05:41:58,084 INFO  L112        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2024-11-01 05:41:58,084 INFO  L270        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2024-11-01 05:41:58,089 INFO  L274        PluginConnector]: CACSL2BoogieTranslator initialized
[2024-11-01 05:41:58,090 INFO  L184        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.11 05:41:58" (1/1) ...
[2024-11-01 05:41:58,091 INFO  L204        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@57dfa013 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 05:41:58, skipping insertion in model container
[2024-11-01 05:41:58,091 INFO  L184        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.11 05:41:58" (1/1) ...
[2024-11-01 05:41:58,143 INFO  L175         MainTranslator]: Built tables and reachable declarations
[2024-11-01 05:41:58,356 WARN  L251   ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.unsafe_intersymbol_analog_estimation_convergence.c[1313,1326]
[2024-11-01 05:41:58,598 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2024-11-01 05:41:58,611 INFO  L200         MainTranslator]: Completed pre-run
[2024-11-01 05:41:58,624 WARN  L251   ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.unsafe_intersymbol_analog_estimation_convergence.c[1313,1326]
[2024-11-01 05:41:58,755 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2024-11-01 05:41:58,774 INFO  L204         MainTranslator]: Completed translation
[2024-11-01 05:41:58,776 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 05:41:58 WrapperNode
[2024-11-01 05:41:58,776 INFO  L131        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2024-11-01 05:41:58,777 INFO  L112        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2024-11-01 05:41:58,778 INFO  L270        PluginConnector]: Initializing Boogie Procedure Inliner...
[2024-11-01 05:41:58,778 INFO  L274        PluginConnector]: Boogie Procedure Inliner initialized
[2024-11-01 05:41:58,783 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 05:41:58" (1/1) ...
[2024-11-01 05:41:58,805 INFO  L184        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 05:41:58" (1/1) ...
[2024-11-01 05:41:58,864 INFO  L138                Inliner]: procedures = 17, calls = 10, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 762
[2024-11-01 05:41:58,865 INFO  L131        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2024-11-01 05:41:58,866 INFO  L112        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2024-11-01 05:41:58,866 INFO  L270        PluginConnector]: Initializing Boogie Preprocessor...
[2024-11-01 05:41:58,866 INFO  L274        PluginConnector]: Boogie Preprocessor initialized
[2024-11-01 05:41:58,880 INFO  L184        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 05:41:58" (1/1) ...
[2024-11-01 05:41:58,880 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 05:41:58" (1/1) ...
[2024-11-01 05:41:58,891 INFO  L184        PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 05:41:58" (1/1) ...
[2024-11-01 05:41:58,925 INFO  L175           MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0].
[2024-11-01 05:41:58,925 INFO  L184        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 05:41:58" (1/1) ...
[2024-11-01 05:41:58,925 INFO  L184        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 05:41:58" (1/1) ...
[2024-11-01 05:41:58,954 INFO  L184        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 05:41:58" (1/1) ...
[2024-11-01 05:41:58,958 INFO  L184        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 05:41:58" (1/1) ...
[2024-11-01 05:41:58,966 INFO  L184        PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 05:41:58" (1/1) ...
[2024-11-01 05:41:58,974 INFO  L184        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 05:41:58" (1/1) ...
[2024-11-01 05:41:58,993 INFO  L131        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2024-11-01 05:41:58,994 INFO  L112        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2024-11-01 05:41:58,998 INFO  L270        PluginConnector]: Initializing RCFGBuilder...
[2024-11-01 05:41:58,998 INFO  L274        PluginConnector]: RCFGBuilder initialized
[2024-11-01 05:41:58,999 INFO  L184        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 05:41:58" (1/1) ...
[2024-11-01 05:41:59,005 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2024-11-01 05:41:59,018 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2024-11-01 05:41:59,034 INFO  L229       MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null)
[2024-11-01 05:41:59,042 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process
[2024-11-01 05:41:59,068 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2024-11-01 05:41:59,068 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0
[2024-11-01 05:41:59,069 INFO  L130     BoogieDeclarations]: Found specification of procedure assume_abort_if_not
[2024-11-01 05:41:59,069 INFO  L138     BoogieDeclarations]: Found implementation of procedure assume_abort_if_not
[2024-11-01 05:41:59,069 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2024-11-01 05:41:59,069 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2024-11-01 05:41:59,328 INFO  L238             CfgBuilder]: Building ICFG
[2024-11-01 05:41:59,331 INFO  L264             CfgBuilder]: Building CFG for each procedure with an implementation
[2024-11-01 05:42:00,496 INFO  L?                        ?]: Removed 344 outVars from TransFormulas that were not future-live.
[2024-11-01 05:42:00,496 INFO  L287             CfgBuilder]: Performing block encoding
[2024-11-01 05:42:00,509 INFO  L311             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2024-11-01 05:42:00,509 INFO  L316             CfgBuilder]: Removed 1 assume(true) statements.
[2024-11-01 05:42:00,509 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.11 05:42:00 BoogieIcfgContainer
[2024-11-01 05:42:00,509 INFO  L131        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2024-11-01 05:42:00,512 INFO  L112        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2024-11-01 05:42:00,512 INFO  L270        PluginConnector]: Initializing TraceAbstraction...
[2024-11-01 05:42:00,515 INFO  L274        PluginConnector]: TraceAbstraction initialized
[2024-11-01 05:42:00,515 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.11 05:41:58" (1/3) ...
[2024-11-01 05:42:00,516 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@670f3c90 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.11 05:42:00, skipping insertion in model container
[2024-11-01 05:42:00,517 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 05:41:58" (2/3) ...
[2024-11-01 05:42:00,517 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@670f3c90 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.11 05:42:00, skipping insertion in model container
[2024-11-01 05:42:00,517 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.11 05:42:00" (3/3) ...
[2024-11-01 05:42:00,518 INFO  L112   eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.unsafe_intersymbol_analog_estimation_convergence.c
[2024-11-01 05:42:00,534 INFO  L214   ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2024-11-01 05:42:00,535 INFO  L154   ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2024-11-01 05:42:00,596 INFO  L332      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2024-11-01 05:42:00,603 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;@4daa7afb, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2024-11-01 05:42:00,604 INFO  L334      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2024-11-01 05:42:00,608 INFO  L276                IsEmpty]: Start isEmpty. Operand  has 18 states, 13 states have (on average 1.3076923076923077) internal successors, (17), 14 states have internal predecessors, (17), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2024-11-01 05:42:00,617 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 18
[2024-11-01 05:42:00,618 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-01 05:42:00,619 INFO  L215           NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-01 05:42:00,620 INFO  L396      AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-01 05:42:00,625 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-01 05:42:00,625 INFO  L85        PathProgramCache]: Analyzing trace with hash 896107007, now seen corresponding path program 1 times
[2024-11-01 05:42:00,634 INFO  L118   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2024-11-01 05:42:00,635 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2046495168]
[2024-11-01 05:42:00,635 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-01 05:42:00,638 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-01 05:42:00,638 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2024-11-01 05:42:00,640 INFO  L229       MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-01 05:42:00,642 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process
[2024-11-01 05:42:01,064 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-01 05:42:01,076 INFO  L255         TraceCheckSpWp]: Trace formula consists of 434 conjuncts, 23 conjuncts are in the unsatisfiable core
[2024-11-01 05:42:01,086 INFO  L278         TraceCheckSpWp]: Computing forward predicates...
[2024-11-01 05:42:01,595 INFO  L134       CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2024-11-01 05:42:01,595 INFO  L311         TraceCheckSpWp]: Computing backward predicates...
[2024-11-01 05:42:02,277 INFO  L134       CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2024-11-01 05:42:02,278 INFO  L136   FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2024-11-01 05:42:02,278 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2046495168]
[2024-11-01 05:42:02,279 INFO  L158   FreeRefinementEngine]: IpTcStrategyModulePreferences [2046495168] provided 0 perfect and 2 imperfect interpolant sequences
[2024-11-01 05:42:02,279 INFO  L185   FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2024-11-01 05:42:02,279 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 11
[2024-11-01 05:42:02,281 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1963723962]
[2024-11-01 05:42:02,281 INFO  L85    oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2024-11-01 05:42:02,285 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 11 states
[2024-11-01 05:42:02,285 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2024-11-01 05:42:02,305 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants.
[2024-11-01 05:42:02,306 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110
[2024-11-01 05:42:02,308 INFO  L87              Difference]: Start difference. First operand  has 18 states, 13 states have (on average 1.3076923076923077) internal successors, (17), 14 states have internal predecessors, (17), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand  has 11 states, 9 states have (on average 2.2222222222222223) internal successors, (20), 11 states have internal predecessors, (20), 4 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 4 states have call successors, (4)
[2024-11-01 05:42:03,134 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-01 05:42:03,135 INFO  L93              Difference]: Finished difference Result 38 states and 53 transitions.
[2024-11-01 05:42:03,136 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. 
[2024-11-01 05:42:03,137 INFO  L78                 Accepts]: Start accepts. Automaton has  has 11 states, 9 states have (on average 2.2222222222222223) internal successors, (20), 11 states have internal predecessors, (20), 4 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 4 states have call successors, (4) Word has length 17
[2024-11-01 05:42:03,138 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-01 05:42:03,143 INFO  L225             Difference]: With dead ends: 38
[2024-11-01 05:42:03,143 INFO  L226             Difference]: Without dead ends: 22
[2024-11-01 05:42:03,146 INFO  L431           NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132
[2024-11-01 05:42:03,149 INFO  L432           NwaCegarLoop]: 8 mSDtfsCounter, 7 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time
[2024-11-01 05:42:03,150 INFO  L433           NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 35 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time]
[2024-11-01 05:42:03,166 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 22 states.
[2024-11-01 05:42:03,181 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 21.
[2024-11-01 05:42:03,183 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 21 states, 15 states have (on average 1.0666666666666667) internal successors, (16), 15 states have internal predecessors, (16), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4)
[2024-11-01 05:42:03,184 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 24 transitions.
[2024-11-01 05:42:03,186 INFO  L78                 Accepts]: Start accepts. Automaton has 21 states and 24 transitions. Word has length 17
[2024-11-01 05:42:03,187 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-01 05:42:03,188 INFO  L471      AbstractCegarLoop]: Abstraction has 21 states and 24 transitions.
[2024-11-01 05:42:03,188 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 11 states, 9 states have (on average 2.2222222222222223) internal successors, (20), 11 states have internal predecessors, (20), 4 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 4 states have call successors, (4)
[2024-11-01 05:42:03,188 INFO  L276                IsEmpty]: Start isEmpty. Operand 21 states and 24 transitions.
[2024-11-01 05:42:03,189 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 33
[2024-11-01 05:42:03,189 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-01 05:42:03,190 INFO  L215           NwaCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1]
[2024-11-01 05:42:03,211 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0
[2024-11-01 05:42:03,390 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-01 05:42:03,391 INFO  L396      AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-01 05:42:03,391 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-01 05:42:03,391 INFO  L85        PathProgramCache]: Analyzing trace with hash 91156387, now seen corresponding path program 1 times
[2024-11-01 05:42:03,392 INFO  L118   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2024-11-01 05:42:03,392 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [556641584]
[2024-11-01 05:42:03,392 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-01 05:42:03,392 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-01 05:42:03,392 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2024-11-01 05:42:03,394 INFO  L229       MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-01 05:42:03,396 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process
[2024-11-01 05:42:03,963 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-01 05:42:03,992 INFO  L255         TraceCheckSpWp]: Trace formula consists of 710 conjuncts, 27 conjuncts are in the unsatisfiable core
[2024-11-01 05:42:04,000 INFO  L278         TraceCheckSpWp]: Computing forward predicates...
[2024-11-01 05:42:04,625 INFO  L134       CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked.
[2024-11-01 05:42:04,625 INFO  L311         TraceCheckSpWp]: Computing backward predicates...
[2024-11-01 05:42:05,564 INFO  L134       CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked.
[2024-11-01 05:42:05,564 INFO  L136   FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2024-11-01 05:42:05,564 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [556641584]
[2024-11-01 05:42:05,565 INFO  L158   FreeRefinementEngine]: IpTcStrategyModulePreferences [556641584] provided 0 perfect and 2 imperfect interpolant sequences
[2024-11-01 05:42:05,565 INFO  L185   FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2024-11-01 05:42:05,565 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10
[2024-11-01 05:42:05,565 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1358283467]
[2024-11-01 05:42:05,565 INFO  L85    oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2024-11-01 05:42:05,566 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 10 states
[2024-11-01 05:42:05,567 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2024-11-01 05:42:05,567 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants.
[2024-11-01 05:42:05,567 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90
[2024-11-01 05:42:05,568 INFO  L87              Difference]: Start difference. First operand 21 states and 24 transitions. Second operand  has 10 states, 10 states have (on average 2.5) internal successors, (25), 10 states have internal predecessors, (25), 4 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8)
[2024-11-01 05:42:08,569 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-01 05:42:08,569 INFO  L93              Difference]: Finished difference Result 45 states and 56 transitions.
[2024-11-01 05:42:08,570 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2024-11-01 05:42:08,570 INFO  L78                 Accepts]: Start accepts. Automaton has  has 10 states, 10 states have (on average 2.5) internal successors, (25), 10 states have internal predecessors, (25), 4 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) Word has length 32
[2024-11-01 05:42:08,570 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-01 05:42:08,571 INFO  L225             Difference]: With dead ends: 45
[2024-11-01 05:42:08,571 INFO  L226             Difference]: Without dead ends: 43
[2024-11-01 05:42:08,572 INFO  L431           NwaCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=78, Invalid=132, Unknown=0, NotChecked=0, Total=210
[2024-11-01 05:42:08,573 INFO  L432           NwaCegarLoop]: 11 mSDtfsCounter, 10 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time
[2024-11-01 05:42:08,573 INFO  L433           NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 46 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time]
[2024-11-01 05:42:08,574 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 43 states.
[2024-11-01 05:42:08,583 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 42.
[2024-11-01 05:42:08,584 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 42 states, 30 states have (on average 1.0333333333333334) internal successors, (31), 30 states have internal predecessors, (31), 10 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10)
[2024-11-01 05:42:08,585 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 51 transitions.
[2024-11-01 05:42:08,585 INFO  L78                 Accepts]: Start accepts. Automaton has 42 states and 51 transitions. Word has length 32
[2024-11-01 05:42:08,586 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-01 05:42:08,586 INFO  L471      AbstractCegarLoop]: Abstraction has 42 states and 51 transitions.
[2024-11-01 05:42:08,586 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 10 states, 10 states have (on average 2.5) internal successors, (25), 10 states have internal predecessors, (25), 4 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8)
[2024-11-01 05:42:08,586 INFO  L276                IsEmpty]: Start isEmpty. Operand 42 states and 51 transitions.
[2024-11-01 05:42:08,588 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 78
[2024-11-01 05:42:08,588 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-01 05:42:08,588 INFO  L215           NwaCegarLoop]: trace histogram [10, 10, 10, 5, 5, 5, 5, 5, 5, 5, 4, 4, 1, 1, 1, 1]
[2024-11-01 05:42:08,629 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0
[2024-11-01 05:42:08,789 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-01 05:42:08,790 INFO  L396      AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-01 05:42:08,790 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-01 05:42:08,790 INFO  L85        PathProgramCache]: Analyzing trace with hash 257648895, now seen corresponding path program 2 times
[2024-11-01 05:42:08,790 INFO  L118   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2024-11-01 05:42:08,791 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1686233357]
[2024-11-01 05:42:08,791 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-01 05:42:08,791 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-01 05:42:08,791 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2024-11-01 05:42:08,795 INFO  L229       MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-01 05:42:08,796 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process
[2024-11-01 05:42:10,092 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-01 05:42:10,188 INFO  L255         TraceCheckSpWp]: Trace formula consists of 1538 conjuncts, 31 conjuncts are in the unsatisfiable core
[2024-11-01 05:42:10,200 INFO  L278         TraceCheckSpWp]: Computing forward predicates...
[2024-11-01 05:42:12,000 INFO  L134       CoverageAnalysis]: Checked inductivity of 246 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked.
[2024-11-01 05:42:12,000 INFO  L311         TraceCheckSpWp]: Computing backward predicates...
[2024-11-01 05:42:14,278 INFO  L134       CoverageAnalysis]: Checked inductivity of 246 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked.
[2024-11-01 05:42:14,278 INFO  L136   FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2024-11-01 05:42:14,279 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1686233357]
[2024-11-01 05:42:14,279 INFO  L158   FreeRefinementEngine]: IpTcStrategyModulePreferences [1686233357] provided 0 perfect and 2 imperfect interpolant sequences
[2024-11-01 05:42:14,279 INFO  L185   FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2024-11-01 05:42:14,279 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16
[2024-11-01 05:42:14,279 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [383268562]
[2024-11-01 05:42:14,279 INFO  L85    oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2024-11-01 05:42:14,280 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 16 states
[2024-11-01 05:42:14,280 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2024-11-01 05:42:14,283 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants.
[2024-11-01 05:42:14,283 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=181, Unknown=0, NotChecked=0, Total=240
[2024-11-01 05:42:14,283 INFO  L87              Difference]: Start difference. First operand 42 states and 51 transitions. Second operand  has 16 states, 16 states have (on average 3.4375) internal successors, (55), 16 states have internal predecessors, (55), 10 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 10 states have call predecessors, (20), 10 states have call successors, (20)
[2024-11-01 05:42:18,664 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-01 05:42:18,664 INFO  L93              Difference]: Finished difference Result 59 states and 73 transitions.
[2024-11-01 05:42:18,665 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. 
[2024-11-01 05:42:18,665 INFO  L78                 Accepts]: Start accepts. Automaton has  has 16 states, 16 states have (on average 3.4375) internal successors, (55), 16 states have internal predecessors, (55), 10 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 10 states have call predecessors, (20), 10 states have call successors, (20) Word has length 77
[2024-11-01 05:42:18,666 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-01 05:42:18,667 INFO  L225             Difference]: With dead ends: 59
[2024-11-01 05:42:18,667 INFO  L226             Difference]: Without dead ends: 57
[2024-11-01 05:42:18,667 INFO  L431           NwaCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=116, Invalid=346, Unknown=0, NotChecked=0, Total=462
[2024-11-01 05:42:18,668 INFO  L432           NwaCegarLoop]: 27 mSDtfsCounter, 6 mSDsluCounter, 181 mSDsCounter, 0 mSdLazyCounter, 269 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 208 SdHoareTripleChecker+Invalid, 274 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 269 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time
[2024-11-01 05:42:18,669 INFO  L433           NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 208 Invalid, 274 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 269 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time]
[2024-11-01 05:42:18,669 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 57 states.
[2024-11-01 05:42:18,690 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 56.
[2024-11-01 05:42:18,691 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 56 states, 40 states have (on average 1.025) internal successors, (41), 40 states have internal predecessors, (41), 14 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14)
[2024-11-01 05:42:18,692 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 69 transitions.
[2024-11-01 05:42:18,692 INFO  L78                 Accepts]: Start accepts. Automaton has 56 states and 69 transitions. Word has length 77
[2024-11-01 05:42:18,693 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-01 05:42:18,693 INFO  L471      AbstractCegarLoop]: Abstraction has 56 states and 69 transitions.
[2024-11-01 05:42:18,693 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 16 states, 16 states have (on average 3.4375) internal successors, (55), 16 states have internal predecessors, (55), 10 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 10 states have call predecessors, (20), 10 states have call successors, (20)
[2024-11-01 05:42:18,693 INFO  L276                IsEmpty]: Start isEmpty. Operand 56 states and 69 transitions.
[2024-11-01 05:42:18,695 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 108
[2024-11-01 05:42:18,695 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-01 05:42:18,696 INFO  L215           NwaCegarLoop]: trace histogram [14, 14, 14, 7, 7, 7, 7, 7, 7, 7, 6, 6, 1, 1, 1, 1]
[2024-11-01 05:42:18,770 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0
[2024-11-01 05:42:18,896 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
[2024-11-01 05:42:18,897 INFO  L396      AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-01 05:42:18,897 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-01 05:42:18,897 INFO  L85        PathProgramCache]: Analyzing trace with hash -761811841, now seen corresponding path program 3 times
[2024-11-01 05:42:18,897 INFO  L118   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2024-11-01 05:42:18,898 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1782243217]
[2024-11-01 05:42:18,898 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-01 05:42:18,898 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-01 05:42:18,898 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2024-11-01 05:42:18,900 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)
[2024-11-01 05:42:18,901 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process
[2024-11-01 05:42:27,216 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-01 05:42:27,423 WARN  L253         TraceCheckSpWp]: Trace formula consists of 2090 conjuncts, 1187 conjuncts are in the unsatisfiable core
[2024-11-01 05:42:27,537 INFO  L278         TraceCheckSpWp]: Computing forward predicates...