/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.arbitrated_top_n4_w16_d64_e0.c


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


This is Ultimate 0.2.5-dev-356b6ba-m
[2024-11-01 03:56:28,102 INFO  L188        SettingsManager]: Resetting all preferences to default values...
[2024-11-01 03:56:28,202 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 03:56:28,207 WARN  L101        SettingsManager]: Preference file contains the following unknown settings:
[2024-11-01 03:56:28,208 WARN  L103        SettingsManager]:   * de.uni_freiburg.informatik.ultimate.core.Log level for class
[2024-11-01 03:56:28,246 INFO  L130        SettingsManager]: Preferences different from defaults after loading the file:
[2024-11-01 03:56:28,250 INFO  L151        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2024-11-01 03:56:28,251 INFO  L153        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2024-11-01 03:56:28,251 INFO  L151        SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults:
[2024-11-01 03:56:28,252 INFO  L153        SettingsManager]:  * Use memory slicer=true
[2024-11-01 03:56:28,252 INFO  L151        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2024-11-01 03:56:28,252 INFO  L153        SettingsManager]:  * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2024-11-01 03:56:28,254 INFO  L151        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2024-11-01 03:56:28,254 INFO  L153        SettingsManager]:  * Create parallel compositions if possible=false
[2024-11-01 03:56:28,255 INFO  L153        SettingsManager]:  * Use SBE=true
[2024-11-01 03:56:28,255 INFO  L151        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2024-11-01 03:56:28,256 INFO  L153        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2024-11-01 03:56:28,256 INFO  L153        SettingsManager]:  * Check division by zero=IGNORE
[2024-11-01 03:56:28,256 INFO  L153        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2024-11-01 03:56:28,257 INFO  L153        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2024-11-01 03:56:28,257 INFO  L153        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2024-11-01 03:56:28,261 INFO  L153        SettingsManager]:  * Adapt memory model on pointer casts if necessary=true
[2024-11-01 03:56:28,261 INFO  L153        SettingsManager]:  * Use bitvectors instead of ints=true
[2024-11-01 03:56:28,261 INFO  L153        SettingsManager]:  * Allow undefined functions=false
[2024-11-01 03:56:28,262 INFO  L153        SettingsManager]:  * Memory model=HoenickeLindenmann_4ByteResolution
[2024-11-01 03:56:28,262 INFO  L153        SettingsManager]:  * Check if freed pointer was valid=false
[2024-11-01 03:56:28,262 INFO  L153        SettingsManager]:  * Use constant arrays=true
[2024-11-01 03:56:28,263 INFO  L151        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2024-11-01 03:56:28,263 INFO  L153        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2024-11-01 03:56:28,263 INFO  L153        SettingsManager]:  * Only consider context switches at boundaries of atomic blocks=true
[2024-11-01 03:56:28,263 INFO  L153        SettingsManager]:  * SMT solver=External_DefaultMode
[2024-11-01 03:56:28,264 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2024-11-01 03:56:28,264 INFO  L151        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2024-11-01 03:56:28,267 INFO  L153        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2024-11-01 03:56:28,268 INFO  L153        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopHeads
[2024-11-01 03:56:28,268 INFO  L153        SettingsManager]:  * Trace refinement strategy=WOLF
[2024-11-01 03:56:28,269 INFO  L153        SettingsManager]:  * Command for external solver=cvc4 --incremental --print-success --lang smt 
[2024-11-01 03:56:28,269 INFO  L153        SettingsManager]:  * Apply one-shot large block encoding in concurrent analysis=false
[2024-11-01 03:56:28,269 INFO  L153        SettingsManager]:  * Automaton type used in concurrency analysis=PETRI_NET
[2024-11-01 03:56:28,269 INFO  L153        SettingsManager]:  * Order on configurations for Petri net unfoldings=DBO
[2024-11-01 03:56:28,269 INFO  L153        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2024-11-01 03:56:28,270 INFO  L153        SettingsManager]:  * Logic for external solver=AUFBV
[2024-11-01 03:56:28,270 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$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Allow undefined functions -> true
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> External_ModelsAndUnsatCoreMode
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Command for external solver -> z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-01 03:56:28,608 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2024-11-01 03:56:28,637 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2024-11-01 03:56:28,641 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2024-11-01 03:56:28,642 INFO  L270        PluginConnector]: Initializing CDTParser...
[2024-11-01 03:56:28,642 INFO  L274        PluginConnector]: CDTParser initialized
[2024-11-01 03:56:28,643 INFO  L431   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.arbitrated_top_n4_w16_d64_e0.c
[2024-11-01 03:56:30,313 INFO  L533              CDTParser]: Created temporary CDT project at NULL
[2024-11-01 03:56:30,863 INFO  L384              CDTParser]: Found 1 translation units.
[2024-11-01 03:56:30,864 INFO  L180              CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.arbitrated_top_n4_w16_d64_e0.c
[2024-11-01 03:56:30,917 INFO  L427              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9e91ecb81/2fdadc7253f74ba5b83c51a911f71493/FLAG8cf8978d0
[2024-11-01 03:56:30,940 INFO  L435              CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9e91ecb81/2fdadc7253f74ba5b83c51a911f71493
[2024-11-01 03:56:30,944 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2024-11-01 03:56:30,947 INFO  L133        ToolchainWalker]: Walking toolchain with 5 elements.
[2024-11-01 03:56:30,950 INFO  L112        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2024-11-01 03:56:30,950 INFO  L270        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2024-11-01 03:56:30,956 INFO  L274        PluginConnector]: CACSL2BoogieTranslator initialized
[2024-11-01 03:56:30,957 INFO  L184        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.11 03:56:30" (1/1) ...
[2024-11-01 03:56:30,958 INFO  L204        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@44e35d76 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 03:56:30, skipping insertion in model container
[2024-11-01 03:56:30,958 INFO  L184        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.11 03:56:30" (1/1) ...
[2024-11-01 03:56:31,157 INFO  L175         MainTranslator]: Built tables and reachable declarations
[2024-11-01 03:56:31,503 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.arbitrated_top_n4_w16_d64_e0.c[1271,1284]
[2024-11-01 03:56:32,391 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2024-11-01 03:56:32,411 INFO  L200         MainTranslator]: Completed pre-run
[2024-11-01 03:56:32,422 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.arbitrated_top_n4_w16_d64_e0.c[1271,1284]
[2024-11-01 03:56:32,860 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2024-11-01 03:56:32,881 INFO  L204         MainTranslator]: Completed translation
[2024-11-01 03:56:32,883 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 03:56:32 WrapperNode
[2024-11-01 03:56:32,884 INFO  L131        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2024-11-01 03:56:32,885 INFO  L112        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2024-11-01 03:56:32,885 INFO  L270        PluginConnector]: Initializing Boogie Procedure Inliner...
[2024-11-01 03:56:32,885 INFO  L274        PluginConnector]: Boogie Procedure Inliner initialized
[2024-11-01 03:56:32,893 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 03:56:32" (1/1) ...
[2024-11-01 03:56:33,019 INFO  L184        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 03:56:32" (1/1) ...
[2024-11-01 03:56:33,373 INFO  L138                Inliner]: procedures = 17, calls = 21, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 8940
[2024-11-01 03:56:33,374 INFO  L131        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2024-11-01 03:56:33,375 INFO  L112        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2024-11-01 03:56:33,375 INFO  L270        PluginConnector]: Initializing Boogie Preprocessor...
[2024-11-01 03:56:33,376 INFO  L274        PluginConnector]: Boogie Preprocessor initialized
[2024-11-01 03:56:33,448 INFO  L184        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 03:56:32" (1/1) ...
[2024-11-01 03:56:33,449 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 03:56:32" (1/1) ...
[2024-11-01 03:56:33,560 INFO  L184        PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 03:56:32" (1/1) ...
[2024-11-01 03:56:33,682 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 03:56:33,682 INFO  L184        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 03:56:32" (1/1) ...
[2024-11-01 03:56:33,682 INFO  L184        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 03:56:32" (1/1) ...
[2024-11-01 03:56:33,814 INFO  L184        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 03:56:32" (1/1) ...
[2024-11-01 03:56:33,836 INFO  L184        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 03:56:32" (1/1) ...
[2024-11-01 03:56:33,864 INFO  L184        PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 03:56:32" (1/1) ...
[2024-11-01 03:56:33,894 INFO  L184        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 03:56:32" (1/1) ...
[2024-11-01 03:56:33,962 INFO  L131        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2024-11-01 03:56:33,963 INFO  L112        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2024-11-01 03:56:33,964 INFO  L270        PluginConnector]: Initializing RCFGBuilder...
[2024-11-01 03:56:33,964 INFO  L274        PluginConnector]: RCFGBuilder initialized
[2024-11-01 03:56:33,965 INFO  L184        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 03:56:32" (1/1) ...
[2024-11-01 03:56:33,972 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2024-11-01 03:56:33,985 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2024-11-01 03:56:34,059 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 03:56:34,075 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 03:56:34,105 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2024-11-01 03:56:34,105 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0
[2024-11-01 03:56:34,106 INFO  L130     BoogieDeclarations]: Found specification of procedure assume_abort_if_not
[2024-11-01 03:56:34,106 INFO  L138     BoogieDeclarations]: Found implementation of procedure assume_abort_if_not
[2024-11-01 03:56:34,106 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2024-11-01 03:56:34,106 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2024-11-01 03:56:35,184 INFO  L238             CfgBuilder]: Building ICFG
[2024-11-01 03:56:35,187 INFO  L264             CfgBuilder]: Building CFG for each procedure with an implementation
[2024-11-01 03:56:45,876 INFO  L?                        ?]: Removed 2562 outVars from TransFormulas that were not future-live.
[2024-11-01 03:56:45,876 INFO  L287             CfgBuilder]: Performing block encoding
[2024-11-01 03:56:45,894 INFO  L311             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2024-11-01 03:56:45,895 INFO  L316             CfgBuilder]: Removed 1 assume(true) statements.
[2024-11-01 03:56:45,895 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.11 03:56:45 BoogieIcfgContainer
[2024-11-01 03:56:45,895 INFO  L131        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2024-11-01 03:56:45,899 INFO  L112        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2024-11-01 03:56:45,900 INFO  L270        PluginConnector]: Initializing TraceAbstraction...
[2024-11-01 03:56:45,904 INFO  L274        PluginConnector]: TraceAbstraction initialized
[2024-11-01 03:56:45,904 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.11 03:56:30" (1/3) ...
[2024-11-01 03:56:45,905 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63c4f4d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.11 03:56:45, skipping insertion in model container
[2024-11-01 03:56:45,905 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 03:56:32" (2/3) ...
[2024-11-01 03:56:45,905 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63c4f4d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.11 03:56:45, skipping insertion in model container
[2024-11-01 03:56:45,905 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.11 03:56:45" (3/3) ...
[2024-11-01 03:56:45,907 INFO  L112   eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.arbitrated_top_n4_w16_d64_e0.c
[2024-11-01 03:56:45,926 INFO  L214   ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2024-11-01 03:56:45,927 INFO  L154   ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2024-11-01 03:56:46,001 INFO  L332      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2024-11-01 03:56:46,013 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;@1c3e9ec6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2024-11-01 03:56:46,014 INFO  L334      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2024-11-01 03:56:46,018 INFO  L276                IsEmpty]: Start isEmpty. Operand  has 40 states, 24 states have (on average 1.1666666666666667) internal successors, (28), 25 states have internal predecessors, (28), 13 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13)
[2024-11-01 03:56:46,029 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 84
[2024-11-01 03:56:46,029 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-01 03:56:46,030 INFO  L215           NwaCegarLoop]: trace histogram [13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-01 03:56:46,031 INFO  L396      AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-01 03:56:46,037 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-01 03:56:46,038 INFO  L85        PathProgramCache]: Analyzing trace with hash 1644883339, now seen corresponding path program 1 times
[2024-11-01 03:56:46,048 INFO  L118   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2024-11-01 03:56:46,049 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [432325578]
[2024-11-01 03:56:46,049 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-01 03:56:46,051 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-01 03:56:46,052 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2024-11-01 03:56:46,054 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 03:56:46,057 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 03:56:48,501 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-01 03:56:48,544 INFO  L255         TraceCheckSpWp]: Trace formula consists of 3037 conjuncts, 1 conjuncts are in the unsatisfiable core
[2024-11-01 03:56:48,581 INFO  L278         TraceCheckSpWp]: Computing forward predicates...
[2024-11-01 03:56:48,623 INFO  L134       CoverageAnalysis]: Checked inductivity of 312 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 288 trivial. 0 not checked.
[2024-11-01 03:56:48,623 INFO  L311         TraceCheckSpWp]: Computing backward predicates...
[2024-11-01 03:56:48,713 INFO  L134       CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 288 trivial. 0 not checked.
[2024-11-01 03:56:48,714 INFO  L136   FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2024-11-01 03:56:48,715 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [432325578]
[2024-11-01 03:56:48,715 INFO  L158   FreeRefinementEngine]: IpTcStrategyModulePreferences [432325578] provided 1 perfect and 1 imperfect interpolant sequences
[2024-11-01 03:56:48,716 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2024-11-01 03:56:48,716 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2
[2024-11-01 03:56:48,718 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1295054060]
[2024-11-01 03:56:48,718 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-01 03:56:48,722 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 2 states
[2024-11-01 03:56:48,722 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2024-11-01 03:56:48,746 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants.
[2024-11-01 03:56:48,747 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2024-11-01 03:56:48,749 INFO  L87              Difference]: Start difference. First operand  has 40 states, 24 states have (on average 1.1666666666666667) internal successors, (28), 25 states have internal predecessors, (28), 13 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) Second operand  has 2 states, 2 states have (on average 11.5) internal successors, (23), 2 states have internal predecessors, (23), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 2 states have call successors, (13)
[2024-11-01 03:56:48,774 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-01 03:56:48,774 INFO  L93              Difference]: Finished difference Result 75 states and 117 transitions.
[2024-11-01 03:56:48,776 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. 
[2024-11-01 03:56:48,777 INFO  L78                 Accepts]: Start accepts. Automaton has  has 2 states, 2 states have (on average 11.5) internal successors, (23), 2 states have internal predecessors, (23), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 2 states have call successors, (13) Word has length 83
[2024-11-01 03:56:48,778 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-01 03:56:48,785 INFO  L225             Difference]: With dead ends: 75
[2024-11-01 03:56:48,785 INFO  L226             Difference]: Without dead ends: 37
[2024-11-01 03:56:48,788 INFO  L431           NwaCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 164 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2024-11-01 03:56:48,795 INFO  L432           NwaCegarLoop]: 49 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2024-11-01 03:56:48,796 INFO  L433           NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2024-11-01 03:56:48,812 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 37 states.
[2024-11-01 03:56:48,835 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37.
[2024-11-01 03:56:48,838 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 37 states, 22 states have (on average 1.0454545454545454) internal successors, (23), 22 states have internal predecessors, (23), 13 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13)
[2024-11-01 03:56:48,839 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 49 transitions.
[2024-11-01 03:56:48,841 INFO  L78                 Accepts]: Start accepts. Automaton has 37 states and 49 transitions. Word has length 83
[2024-11-01 03:56:48,841 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-01 03:56:48,841 INFO  L471      AbstractCegarLoop]: Abstraction has 37 states and 49 transitions.
[2024-11-01 03:56:48,842 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 2 states, 2 states have (on average 11.5) internal successors, (23), 2 states have internal predecessors, (23), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 2 states have call successors, (13)
[2024-11-01 03:56:48,842 INFO  L276                IsEmpty]: Start isEmpty. Operand 37 states and 49 transitions.
[2024-11-01 03:56:48,844 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 84
[2024-11-01 03:56:48,845 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-01 03:56:48,845 INFO  L215           NwaCegarLoop]: trace histogram [13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-01 03:56:48,880 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0
[2024-11-01 03:56:49,045 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 03:56:49,046 INFO  L396      AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-01 03:56:49,047 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-01 03:56:49,047 INFO  L85        PathProgramCache]: Analyzing trace with hash -1385434447, now seen corresponding path program 1 times
[2024-11-01 03:56:49,047 INFO  L118   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2024-11-01 03:56:49,048 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1002758065]
[2024-11-01 03:56:49,048 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-01 03:56:49,048 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-01 03:56:49,049 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2024-11-01 03:56:49,050 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 03:56:49,051 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 03:56:51,357 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-01 03:56:51,402 INFO  L255         TraceCheckSpWp]: Trace formula consists of 3037 conjuncts, 20 conjuncts are in the unsatisfiable core
[2024-11-01 03:56:51,430 INFO  L278         TraceCheckSpWp]: Computing forward predicates...
[2024-11-01 03:56:52,045 INFO  L134       CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 276 trivial. 0 not checked.
[2024-11-01 03:56:52,045 INFO  L311         TraceCheckSpWp]: Computing backward predicates...
[2024-11-01 03:56:52,935 INFO  L134       CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 276 trivial. 0 not checked.
[2024-11-01 03:56:52,935 INFO  L136   FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2024-11-01 03:56:52,935 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1002758065]
[2024-11-01 03:56:52,936 INFO  L158   FreeRefinementEngine]: IpTcStrategyModulePreferences [1002758065] provided 0 perfect and 2 imperfect interpolant sequences
[2024-11-01 03:56:52,936 INFO  L185   FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2024-11-01 03:56:52,936 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 11
[2024-11-01 03:56:52,936 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [502502054]
[2024-11-01 03:56:52,936 INFO  L85    oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2024-11-01 03:56:52,939 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 11 states
[2024-11-01 03:56:52,939 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2024-11-01 03:56:52,940 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants.
[2024-11-01 03:56:52,940 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110
[2024-11-01 03:56:52,940 INFO  L87              Difference]: Start difference. First operand 37 states and 49 transitions. Second operand  has 11 states, 9 states have (on average 4.666666666666667) internal successors, (42), 11 states have internal predecessors, (42), 4 states have call successors, (26), 1 states have call predecessors, (26), 2 states have return successors, (26), 2 states have call predecessors, (26), 4 states have call successors, (26)
[2024-11-01 03:56:54,861 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-01 03:56:54,861 INFO  L93              Difference]: Finished difference Result 67 states and 92 transitions.
[2024-11-01 03:56:54,862 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. 
[2024-11-01 03:56:54,862 INFO  L78                 Accepts]: Start accepts. Automaton has  has 11 states, 9 states have (on average 4.666666666666667) internal successors, (42), 11 states have internal predecessors, (42), 4 states have call successors, (26), 1 states have call predecessors, (26), 2 states have return successors, (26), 2 states have call predecessors, (26), 4 states have call successors, (26) Word has length 83
[2024-11-01 03:56:54,863 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-01 03:56:54,864 INFO  L225             Difference]: With dead ends: 67
[2024-11-01 03:56:54,864 INFO  L226             Difference]: Without dead ends: 65
[2024-11-01 03:56:54,865 INFO  L431           NwaCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 154 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110
[2024-11-01 03:56:54,865 INFO  L432           NwaCegarLoop]: 20 mSDtfsCounter, 12 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 165 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 165 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 165 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time
[2024-11-01 03:56:54,866 INFO  L433           NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 80 Invalid, 165 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 165 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time]
[2024-11-01 03:56:54,867 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 65 states.
[2024-11-01 03:56:54,878 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 65.
[2024-11-01 03:56:54,879 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 65 states, 37 states have (on average 1.027027027027027) internal successors, (38), 37 states have internal predecessors, (38), 26 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26)
[2024-11-01 03:56:54,880 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 90 transitions.
[2024-11-01 03:56:54,881 INFO  L78                 Accepts]: Start accepts. Automaton has 65 states and 90 transitions. Word has length 83
[2024-11-01 03:56:54,882 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-01 03:56:54,882 INFO  L471      AbstractCegarLoop]: Abstraction has 65 states and 90 transitions.
[2024-11-01 03:56:54,883 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 11 states, 9 states have (on average 4.666666666666667) internal successors, (42), 11 states have internal predecessors, (42), 4 states have call successors, (26), 1 states have call predecessors, (26), 2 states have return successors, (26), 2 states have call predecessors, (26), 4 states have call successors, (26)
[2024-11-01 03:56:54,883 INFO  L276                IsEmpty]: Start isEmpty. Operand 65 states and 90 transitions.
[2024-11-01 03:56:54,885 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 165
[2024-11-01 03:56:54,885 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-01 03:56:54,886 INFO  L215           NwaCegarLoop]: trace histogram [26, 26, 26, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1]
[2024-11-01 03:56:54,912 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0
[2024-11-01 03:56:55,086 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 03:56:55,087 INFO  L396      AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-01 03:56:55,087 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-01 03:56:55,087 INFO  L85        PathProgramCache]: Analyzing trace with hash -2082684701, now seen corresponding path program 1 times
[2024-11-01 03:56:55,087 INFO  L118   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2024-11-01 03:56:55,088 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1826522859]
[2024-11-01 03:56:55,088 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-01 03:56:55,088 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-01 03:56:55,088 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2024-11-01 03:56:55,106 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 03:56:55,107 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 03:56:58,977 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-01 03:56:59,070 INFO  L255         TraceCheckSpWp]: Trace formula consists of 5953 conjuncts, 43 conjuncts are in the unsatisfiable core
[2024-11-01 03:56:59,136 INFO  L278         TraceCheckSpWp]: Computing forward predicates...
[2024-11-01 03:57:00,245 INFO  L134       CoverageAnalysis]: Checked inductivity of 1328 backedges. 24 proven. 79 refuted. 0 times theorem prover too weak. 1225 trivial. 0 not checked.
[2024-11-01 03:57:00,245 INFO  L311         TraceCheckSpWp]: Computing backward predicates...
[2024-11-01 03:57:06,815 INFO  L134       CoverageAnalysis]: Checked inductivity of 1328 backedges. 24 proven. 79 refuted. 0 times theorem prover too weak. 1225 trivial. 0 not checked.
[2024-11-01 03:57:06,815 INFO  L136   FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2024-11-01 03:57:06,815 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1826522859]
[2024-11-01 03:57:06,816 INFO  L158   FreeRefinementEngine]: IpTcStrategyModulePreferences [1826522859] provided 0 perfect and 2 imperfect interpolant sequences
[2024-11-01 03:57:06,816 INFO  L185   FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2024-11-01 03:57:06,816 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 17
[2024-11-01 03:57:06,816 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1480459099]
[2024-11-01 03:57:06,816 INFO  L85    oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2024-11-01 03:57:06,817 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 17 states
[2024-11-01 03:57:06,817 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2024-11-01 03:57:06,818 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants.
[2024-11-01 03:57:06,819 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=226, Unknown=0, NotChecked=0, Total=272
[2024-11-01 03:57:06,819 INFO  L87              Difference]: Start difference. First operand 65 states and 90 transitions. Second operand  has 17 states, 15 states have (on average 4.933333333333334) internal successors, (74), 17 states have internal predecessors, (74), 8 states have call successors, (52), 1 states have call predecessors, (52), 2 states have return successors, (52), 6 states have call predecessors, (52), 8 states have call successors, (52)
[2024-11-01 03:57:08,960 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.00s for a HTC check with result INVALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers []
[2024-11-01 03:57:11,112 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-01 03:57:11,112 INFO  L93              Difference]: Finished difference Result 96 states and 134 transitions.
[2024-11-01 03:57:11,113 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. 
[2024-11-01 03:57:11,113 INFO  L78                 Accepts]: Start accepts. Automaton has  has 17 states, 15 states have (on average 4.933333333333334) internal successors, (74), 17 states have internal predecessors, (74), 8 states have call successors, (52), 1 states have call predecessors, (52), 2 states have return successors, (52), 6 states have call predecessors, (52), 8 states have call successors, (52) Word has length 164
[2024-11-01 03:57:11,114 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-01 03:57:11,117 INFO  L225             Difference]: With dead ends: 96
[2024-11-01 03:57:11,117 INFO  L226             Difference]: Without dead ends: 94
[2024-11-01 03:57:11,118 INFO  L431           NwaCegarLoop]: 0 DeclaredPredicates, 330 GetRequests, 311 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=81, Invalid=339, Unknown=0, NotChecked=0, Total=420
[2024-11-01 03:57:11,119 INFO  L432           NwaCegarLoop]: 32 mSDtfsCounter, 11 mSDsluCounter, 221 mSDsCounter, 0 mSdLazyCounter, 455 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 253 SdHoareTripleChecker+Invalid, 466 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 455 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time
[2024-11-01 03:57:11,119 INFO  L433           NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 253 Invalid, 466 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 455 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time]
[2024-11-01 03:57:11,120 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 94 states.
[2024-11-01 03:57:11,134 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 94.
[2024-11-01 03:57:11,134 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 94 states, 53 states have (on average 1.0188679245283019) internal successors, (54), 53 states have internal predecessors, (54), 39 states have call successors, (39), 1 states have call predecessors, (39), 1 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39)
[2024-11-01 03:57:11,136 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 132 transitions.
[2024-11-01 03:57:11,137 INFO  L78                 Accepts]: Start accepts. Automaton has 94 states and 132 transitions. Word has length 164
[2024-11-01 03:57:11,137 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-01 03:57:11,138 INFO  L471      AbstractCegarLoop]: Abstraction has 94 states and 132 transitions.
[2024-11-01 03:57:11,138 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 17 states, 15 states have (on average 4.933333333333334) internal successors, (74), 17 states have internal predecessors, (74), 8 states have call successors, (52), 1 states have call predecessors, (52), 2 states have return successors, (52), 6 states have call predecessors, (52), 8 states have call successors, (52)
[2024-11-01 03:57:11,138 INFO  L276                IsEmpty]: Start isEmpty. Operand 94 states and 132 transitions.
[2024-11-01 03:57:11,142 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 246
[2024-11-01 03:57:11,142 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-01 03:57:11,142 INFO  L215           NwaCegarLoop]: trace histogram [39, 39, 39, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1]
[2024-11-01 03:57:11,186 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 03:57:11,343 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 03:57:11,343 INFO  L396      AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-01 03:57:11,344 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-01 03:57:11,344 INFO  L85        PathProgramCache]: Analyzing trace with hash -1116181263, now seen corresponding path program 2 times
[2024-11-01 03:57:11,344 INFO  L118   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2024-11-01 03:57:11,345 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1439415840]
[2024-11-01 03:57:11,345 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-01 03:57:11,345 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-01 03:57:11,345 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2024-11-01 03:57:11,347 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 03:57:11,348 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 03:57:18,542 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-01 03:57:18,682 INFO  L255         TraceCheckSpWp]: Trace formula consists of 8869 conjuncts, 144 conjuncts are in the unsatisfiable core
[2024-11-01 03:57:18,743 INFO  L278         TraceCheckSpWp]: Computing forward predicates...
[2024-11-01 03:57:40,642 INFO  L134       CoverageAnalysis]: Checked inductivity of 3049 backedges. 264 proven. 241 refuted. 0 times theorem prover too weak. 2544 trivial. 0 not checked.
[2024-11-01 03:57:40,643 INFO  L311         TraceCheckSpWp]: Computing backward predicates...