/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 'cvc4 --incremental --print-success --lang smt' -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Bitvector.epf -i ../../../trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.arbitrated_top_n5_w16_d32_e0.c


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


This is Ultimate 0.2.5-dev-356b6ba-m
[2024-11-01 08:08:31,265 INFO  L188        SettingsManager]: Resetting all preferences to default values...
[2024-11-01 08:08:31,348 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 08:08:31,355 WARN  L101        SettingsManager]: Preference file contains the following unknown settings:
[2024-11-01 08:08:31,356 WARN  L103        SettingsManager]:   * de.uni_freiburg.informatik.ultimate.core.Log level for class
[2024-11-01 08:08:31,411 INFO  L130        SettingsManager]: Preferences different from defaults after loading the file:
[2024-11-01 08:08:31,412 INFO  L151        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2024-11-01 08:08:31,414 INFO  L153        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2024-11-01 08:08:31,415 INFO  L151        SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults:
[2024-11-01 08:08:31,416 INFO  L153        SettingsManager]:  * Use memory slicer=true
[2024-11-01 08:08:31,417 INFO  L151        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2024-11-01 08:08:31,417 INFO  L153        SettingsManager]:  * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2024-11-01 08:08:31,418 INFO  L151        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2024-11-01 08:08:31,418 INFO  L153        SettingsManager]:  * Create parallel compositions if possible=false
[2024-11-01 08:08:31,418 INFO  L153        SettingsManager]:  * Use SBE=true
[2024-11-01 08:08:31,419 INFO  L151        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2024-11-01 08:08:31,419 INFO  L153        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2024-11-01 08:08:31,422 INFO  L153        SettingsManager]:  * Check division by zero=IGNORE
[2024-11-01 08:08:31,423 INFO  L153        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2024-11-01 08:08:31,423 INFO  L153        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2024-11-01 08:08:31,423 INFO  L153        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2024-11-01 08:08:31,423 INFO  L153        SettingsManager]:  * Adapt memory model on pointer casts if necessary=true
[2024-11-01 08:08:31,424 INFO  L153        SettingsManager]:  * Use bitvectors instead of ints=true
[2024-11-01 08:08:31,424 INFO  L153        SettingsManager]:  * Allow undefined functions=false
[2024-11-01 08:08:31,424 INFO  L153        SettingsManager]:  * Memory model=HoenickeLindenmann_4ByteResolution
[2024-11-01 08:08:31,424 INFO  L153        SettingsManager]:  * Check if freed pointer was valid=false
[2024-11-01 08:08:31,425 INFO  L153        SettingsManager]:  * Use constant arrays=true
[2024-11-01 08:08:31,425 INFO  L151        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2024-11-01 08:08:31,425 INFO  L153        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2024-11-01 08:08:31,425 INFO  L153        SettingsManager]:  * Only consider context switches at boundaries of atomic blocks=true
[2024-11-01 08:08:31,426 INFO  L153        SettingsManager]:  * SMT solver=External_DefaultMode
[2024-11-01 08:08:31,426 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2024-11-01 08:08:31,426 INFO  L151        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2024-11-01 08:08:31,426 INFO  L153        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2024-11-01 08:08:31,426 INFO  L153        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopHeads
[2024-11-01 08:08:31,427 INFO  L153        SettingsManager]:  * Trace refinement strategy=WOLF
[2024-11-01 08:08:31,427 INFO  L153        SettingsManager]:  * Command for external solver=cvc4 --incremental --print-success --lang smt 
[2024-11-01 08:08:31,428 INFO  L153        SettingsManager]:  * Apply one-shot large block encoding in concurrent analysis=false
[2024-11-01 08:08:31,429 INFO  L153        SettingsManager]:  * Automaton type used in concurrency analysis=PETRI_NET
[2024-11-01 08:08:31,429 INFO  L153        SettingsManager]:  * Order on configurations for Petri net unfoldings=DBO
[2024-11-01 08:08:31,429 INFO  L153        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2024-11-01 08:08:31,429 INFO  L153        SettingsManager]:  * Logic for external solver=AUFBV
[2024-11-01 08:08:31,429 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$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Allow undefined functions -> true
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> External_ModelsAndUnsatCoreMode
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Command for external solver -> cvc4 --incremental --print-success --lang smt
[2024-11-01 08:08:31,761 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2024-11-01 08:08:31,785 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2024-11-01 08:08:31,789 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2024-11-01 08:08:31,791 INFO  L270        PluginConnector]: Initializing CDTParser...
[2024-11-01 08:08:31,791 INFO  L274        PluginConnector]: CDTParser initialized
[2024-11-01 08:08:31,793 INFO  L431   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.arbitrated_top_n5_w16_d32_e0.c
[2024-11-01 08:08:33,400 INFO  L533              CDTParser]: Created temporary CDT project at NULL
[2024-11-01 08:08:33,833 INFO  L384              CDTParser]: Found 1 translation units.
[2024-11-01 08:08:33,834 INFO  L180              CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.arbitrated_top_n5_w16_d32_e0.c
[2024-11-01 08:08:33,871 INFO  L427              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/755502b09/f4733fb8d94f4dbbab4d3f7f4dd7dbff/FLAG793f23560
[2024-11-01 08:08:33,895 INFO  L435              CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/755502b09/f4733fb8d94f4dbbab4d3f7f4dd7dbff
[2024-11-01 08:08:33,898 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2024-11-01 08:08:33,899 INFO  L133        ToolchainWalker]: Walking toolchain with 5 elements.
[2024-11-01 08:08:33,902 INFO  L112        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2024-11-01 08:08:33,903 INFO  L270        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2024-11-01 08:08:33,908 INFO  L274        PluginConnector]: CACSL2BoogieTranslator initialized
[2024-11-01 08:08:33,908 INFO  L184        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.11 08:08:33" (1/1) ...
[2024-11-01 08:08:33,909 INFO  L204        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1fdc264a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 08:08:33, skipping insertion in model container
[2024-11-01 08:08:33,909 INFO  L184        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.11 08:08:33" (1/1) ...
[2024-11-01 08:08:34,023 INFO  L175         MainTranslator]: Built tables and reachable declarations
[2024-11-01 08:08:34,339 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_n5_w16_d32_e0.c[1325,1338]
[2024-11-01 08:08:35,029 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2024-11-01 08:08:35,042 INFO  L200         MainTranslator]: Completed pre-run
[2024-11-01 08:08:35,053 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_n5_w16_d32_e0.c[1325,1338]
[2024-11-01 08:08:35,433 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2024-11-01 08:08:35,450 INFO  L204         MainTranslator]: Completed translation
[2024-11-01 08:08:35,450 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 08:08:35 WrapperNode
[2024-11-01 08:08:35,451 INFO  L131        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2024-11-01 08:08:35,452 INFO  L112        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2024-11-01 08:08:35,452 INFO  L270        PluginConnector]: Initializing Boogie Procedure Inliner...
[2024-11-01 08:08:35,452 INFO  L274        PluginConnector]: Boogie Procedure Inliner initialized
[2024-11-01 08:08:35,459 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 08:08:35" (1/1) ...
[2024-11-01 08:08:35,546 INFO  L184        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 08:08:35" (1/1) ...
[2024-11-01 08:08:35,798 INFO  L138                Inliner]: procedures = 18, calls = 24, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 6268
[2024-11-01 08:08:35,799 INFO  L131        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2024-11-01 08:08:35,799 INFO  L112        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2024-11-01 08:08:35,799 INFO  L270        PluginConnector]: Initializing Boogie Preprocessor...
[2024-11-01 08:08:35,800 INFO  L274        PluginConnector]: Boogie Preprocessor initialized
[2024-11-01 08:08:35,808 INFO  L184        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 08:08:35" (1/1) ...
[2024-11-01 08:08:35,808 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 08:08:35" (1/1) ...
[2024-11-01 08:08:35,870 INFO  L184        PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 08:08:35" (1/1) ...
[2024-11-01 08:08:35,949 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 08:08:35,949 INFO  L184        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 08:08:35" (1/1) ...
[2024-11-01 08:08:35,950 INFO  L184        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 08:08:35" (1/1) ...
[2024-11-01 08:08:36,102 INFO  L184        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 08:08:35" (1/1) ...
[2024-11-01 08:08:36,126 INFO  L184        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 08:08:35" (1/1) ...
[2024-11-01 08:08:36,144 INFO  L184        PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 08:08:35" (1/1) ...
[2024-11-01 08:08:36,165 INFO  L184        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 08:08:35" (1/1) ...
[2024-11-01 08:08:36,194 INFO  L131        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2024-11-01 08:08:36,196 INFO  L112        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2024-11-01 08:08:36,196 INFO  L270        PluginConnector]: Initializing RCFGBuilder...
[2024-11-01 08:08:36,196 INFO  L274        PluginConnector]: RCFGBuilder initialized
[2024-11-01 08:08:36,197 INFO  L184        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 08:08:35" (1/1) ...
[2024-11-01 08:08:36,202 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2024-11-01 08:08:36,211 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2024-11-01 08:08:36,224 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 08:08:36,227 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 08:08:36,253 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2024-11-01 08:08:36,253 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0
[2024-11-01 08:08:36,253 INFO  L130     BoogieDeclarations]: Found specification of procedure assume_abort_if_not
[2024-11-01 08:08:36,254 INFO  L138     BoogieDeclarations]: Found implementation of procedure assume_abort_if_not
[2024-11-01 08:08:36,254 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2024-11-01 08:08:36,254 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2024-11-01 08:08:37,128 INFO  L238             CfgBuilder]: Building ICFG
[2024-11-01 08:08:37,131 INFO  L264             CfgBuilder]: Building CFG for each procedure with an implementation
[2024-11-01 08:08:42,968 INFO  L?                        ?]: Removed 1903 outVars from TransFormulas that were not future-live.
[2024-11-01 08:08:42,968 INFO  L287             CfgBuilder]: Performing block encoding
[2024-11-01 08:08:42,984 INFO  L311             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2024-11-01 08:08:42,984 INFO  L316             CfgBuilder]: Removed 1 assume(true) statements.
[2024-11-01 08:08:42,985 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.11 08:08:42 BoogieIcfgContainer
[2024-11-01 08:08:42,985 INFO  L131        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2024-11-01 08:08:42,987 INFO  L112        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2024-11-01 08:08:42,987 INFO  L270        PluginConnector]: Initializing TraceAbstraction...
[2024-11-01 08:08:42,990 INFO  L274        PluginConnector]: TraceAbstraction initialized
[2024-11-01 08:08:42,990 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.11 08:08:33" (1/3) ...
[2024-11-01 08:08:42,991 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5feac6ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.11 08:08:42, skipping insertion in model container
[2024-11-01 08:08:42,991 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 08:08:35" (2/3) ...
[2024-11-01 08:08:42,992 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5feac6ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.11 08:08:42, skipping insertion in model container
[2024-11-01 08:08:42,992 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.11 08:08:42" (3/3) ...
[2024-11-01 08:08:42,993 INFO  L112   eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.arbitrated_top_n5_w16_d32_e0.c
[2024-11-01 08:08:43,010 INFO  L214   ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2024-11-01 08:08:43,011 INFO  L154   ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2024-11-01 08:08:43,074 INFO  L332      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2024-11-01 08:08:43,081 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;@599f53d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2024-11-01 08:08:43,082 INFO  L334      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2024-11-01 08:08:43,087 INFO  L276                IsEmpty]: Start isEmpty. Operand  has 46 states, 27 states have (on average 1.1481481481481481) internal successors, (31), 28 states have internal predecessors, (31), 16 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16)
[2024-11-01 08:08:43,096 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 102
[2024-11-01 08:08:43,096 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-01 08:08:43,097 INFO  L215           NwaCegarLoop]: trace histogram [16, 16, 16, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-01 08:08:43,097 INFO  L396      AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-01 08:08:43,101 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-01 08:08:43,102 INFO  L85        PathProgramCache]: Analyzing trace with hash -726051243, now seen corresponding path program 1 times
[2024-11-01 08:08:43,108 INFO  L118   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2024-11-01 08:08:43,109 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [461554235]
[2024-11-01 08:08:43,109 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-01 08:08:43,111 INFO  L173          SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt
[2024-11-01 08:08:43,111 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4
[2024-11-01 08:08:43,113 INFO  L229       MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null)
[2024-11-01 08:08:43,133 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (2)] Waiting until timeout for monitored process
[2024-11-01 08:08:45,913 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-01 08:08:46,040 INFO  L255         TraceCheckSpWp]: Trace formula consists of 2279 conjuncts, 1 conjuncts are in the unsatisfiable core
[2024-11-01 08:08:46,070 INFO  L278         TraceCheckSpWp]: Computing forward predicates...
[2024-11-01 08:08:46,113 INFO  L134       CoverageAnalysis]: Checked inductivity of 480 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 450 trivial. 0 not checked.
[2024-11-01 08:08:46,114 INFO  L311         TraceCheckSpWp]: Computing backward predicates...
[2024-11-01 08:08:46,260 INFO  L134       CoverageAnalysis]: Checked inductivity of 480 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 450 trivial. 0 not checked.
[2024-11-01 08:08:46,263 INFO  L136   FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2024-11-01 08:08:46,263 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [461554235]
[2024-11-01 08:08:46,264 INFO  L158   FreeRefinementEngine]: IpTcStrategyModulePreferences [461554235] provided 2 perfect and 0 imperfect interpolant sequences
[2024-11-01 08:08:46,264 INFO  L185   FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences.
[2024-11-01 08:08:46,265 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2
[2024-11-01 08:08:46,267 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [848840648]
[2024-11-01 08:08:46,267 INFO  L85    oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton
[2024-11-01 08:08:46,273 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 2 states
[2024-11-01 08:08:46,274 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2024-11-01 08:08:46,302 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants.
[2024-11-01 08:08:46,303 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2024-11-01 08:08:46,305 INFO  L87              Difference]: Start difference. First operand  has 46 states, 27 states have (on average 1.1481481481481481) internal successors, (31), 28 states have internal predecessors, (31), 16 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) Second operand  has 2 states, 2 states have (on average 13.0) internal successors, (26), 2 states have internal predecessors, (26), 1 states have call successors, (16), 1 states have call predecessors, (16), 2 states have return successors, (16), 2 states have call predecessors, (16), 1 states have call successors, (16)
[2024-11-01 08:08:46,333 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-01 08:08:46,333 INFO  L93              Difference]: Finished difference Result 87 states and 138 transitions.
[2024-11-01 08:08:46,335 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. 
[2024-11-01 08:08:46,336 INFO  L78                 Accepts]: Start accepts. Automaton has  has 2 states, 2 states have (on average 13.0) internal successors, (26), 2 states have internal predecessors, (26), 1 states have call successors, (16), 1 states have call predecessors, (16), 2 states have return successors, (16), 2 states have call predecessors, (16), 1 states have call successors, (16) Word has length 101
[2024-11-01 08:08:46,337 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-01 08:08:46,344 INFO  L225             Difference]: With dead ends: 87
[2024-11-01 08:08:46,344 INFO  L226             Difference]: Without dead ends: 43
[2024-11-01 08:08:46,348 INFO  L431           NwaCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 200 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 08:08:46,354 INFO  L432           NwaCegarLoop]: 58 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, 58 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 08:08:46,355 INFO  L433           NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2024-11-01 08:08:46,370 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 43 states.
[2024-11-01 08:08:46,389 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43.
[2024-11-01 08:08:46,391 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 43 states, 25 states have (on average 1.04) internal successors, (26), 25 states have internal predecessors, (26), 16 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16)
[2024-11-01 08:08:46,393 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 58 transitions.
[2024-11-01 08:08:46,395 INFO  L78                 Accepts]: Start accepts. Automaton has 43 states and 58 transitions. Word has length 101
[2024-11-01 08:08:46,395 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-01 08:08:46,396 INFO  L471      AbstractCegarLoop]: Abstraction has 43 states and 58 transitions.
[2024-11-01 08:08:46,396 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 2 states, 2 states have (on average 13.0) internal successors, (26), 2 states have internal predecessors, (26), 1 states have call successors, (16), 1 states have call predecessors, (16), 2 states have return successors, (16), 2 states have call predecessors, (16), 1 states have call successors, (16)
[2024-11-01 08:08:46,396 INFO  L276                IsEmpty]: Start isEmpty. Operand 43 states and 58 transitions.
[2024-11-01 08:08:46,400 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 102
[2024-11-01 08:08:46,400 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-01 08:08:46,400 INFO  L215           NwaCegarLoop]: trace histogram [16, 16, 16, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-01 08:08:46,437 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (2)] Ended with exit code 0
[2024-11-01 08:08:46,601 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt
[2024-11-01 08:08:46,602 INFO  L396      AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-01 08:08:46,602 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-01 08:08:46,602 INFO  L85        PathProgramCache]: Analyzing trace with hash -520200651, now seen corresponding path program 1 times
[2024-11-01 08:08:46,603 INFO  L118   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2024-11-01 08:08:46,603 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [644966150]
[2024-11-01 08:08:46,603 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-01 08:08:46,603 INFO  L173          SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt
[2024-11-01 08:08:46,604 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4
[2024-11-01 08:08:46,605 INFO  L229       MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null)
[2024-11-01 08:08:46,606 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (3)] Waiting until timeout for monitored process
[2024-11-01 08:08:49,731 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-01 08:08:49,892 INFO  L255         TraceCheckSpWp]: Trace formula consists of 2279 conjuncts, 14 conjuncts are in the unsatisfiable core
[2024-11-01 08:08:49,917 INFO  L278         TraceCheckSpWp]: Computing forward predicates...
[2024-11-01 08:08:50,503 INFO  L134       CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked.
[2024-11-01 08:08:50,504 INFO  L311         TraceCheckSpWp]: Computing backward predicates...
[2024-11-01 08:08:51,467 INFO  L134       CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked.
[2024-11-01 08:08:51,467 INFO  L136   FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2024-11-01 08:08:51,468 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [644966150]
[2024-11-01 08:08:51,468 INFO  L158   FreeRefinementEngine]: IpTcStrategyModulePreferences [644966150] provided 2 perfect and 0 imperfect interpolant sequences
[2024-11-01 08:08:51,468 INFO  L185   FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences.
[2024-11-01 08:08:51,468 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6
[2024-11-01 08:08:51,468 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1220171357]
[2024-11-01 08:08:51,469 INFO  L85    oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton
[2024-11-01 08:08:51,470 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2024-11-01 08:08:51,470 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2024-11-01 08:08:51,471 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2024-11-01 08:08:51,471 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30
[2024-11-01 08:08:51,472 INFO  L87              Difference]: Start difference. First operand 43 states and 58 transitions. Second operand  has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 6 states have internal predecessors, (43), 2 states have call successors, (32), 1 states have call predecessors, (32), 1 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32)
[2024-11-01 08:08:53,201 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-01 08:08:53,202 INFO  L93              Difference]: Finished difference Result 79 states and 110 transitions.
[2024-11-01 08:08:53,202 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2024-11-01 08:08:53,203 INFO  L78                 Accepts]: Start accepts. Automaton has  has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 6 states have internal predecessors, (43), 2 states have call successors, (32), 1 states have call predecessors, (32), 1 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) Word has length 101
[2024-11-01 08:08:53,203 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-01 08:08:53,205 INFO  L225             Difference]: With dead ends: 79
[2024-11-01 08:08:53,205 INFO  L226             Difference]: Without dead ends: 77
[2024-11-01 08:08:53,206 INFO  L431           NwaCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 196 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30
[2024-11-01 08:08:53,207 INFO  L432           NwaCegarLoop]: 40 mSDtfsCounter, 0 mSDsluCounter, 152 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 192 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time
[2024-11-01 08:08:53,207 INFO  L433           NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 192 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 96 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time]
[2024-11-01 08:08:53,208 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 77 states.
[2024-11-01 08:08:53,284 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 77.
[2024-11-01 08:08:53,285 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 77 states, 43 states have (on average 1.0232558139534884) internal successors, (44), 43 states have internal predecessors, (44), 32 states have call successors, (32), 1 states have call predecessors, (32), 1 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32)
[2024-11-01 08:08:53,287 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 108 transitions.
[2024-11-01 08:08:53,289 INFO  L78                 Accepts]: Start accepts. Automaton has 77 states and 108 transitions. Word has length 101
[2024-11-01 08:08:53,291 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-01 08:08:53,291 INFO  L471      AbstractCegarLoop]: Abstraction has 77 states and 108 transitions.
[2024-11-01 08:08:53,292 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 6 states have internal predecessors, (43), 2 states have call successors, (32), 1 states have call predecessors, (32), 1 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32)
[2024-11-01 08:08:53,292 INFO  L276                IsEmpty]: Start isEmpty. Operand 77 states and 108 transitions.
[2024-11-01 08:08:53,297 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 201
[2024-11-01 08:08:53,297 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-01 08:08:53,298 INFO  L215           NwaCegarLoop]: trace histogram [32, 32, 32, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1]
[2024-11-01 08:08:53,348 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (3)] Forceful destruction successful, exit code 0
[2024-11-01 08:08:53,498 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt
[2024-11-01 08:08:53,499 INFO  L396      AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-01 08:08:53,500 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-01 08:08:53,501 INFO  L85        PathProgramCache]: Analyzing trace with hash -511202845, now seen corresponding path program 1 times
[2024-11-01 08:08:53,501 INFO  L118   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2024-11-01 08:08:53,501 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1921545234]
[2024-11-01 08:08:53,501 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-01 08:08:53,502 INFO  L173          SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt
[2024-11-01 08:08:53,502 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4
[2024-11-01 08:08:53,506 INFO  L229       MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null)
[2024-11-01 08:08:53,508 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (4)] Waiting until timeout for monitored process
[2024-11-01 08:08:59,715 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-01 08:09:00,066 INFO  L255         TraceCheckSpWp]: Trace formula consists of 4467 conjuncts, 40 conjuncts are in the unsatisfiable core
[2024-11-01 08:09:00,126 INFO  L278         TraceCheckSpWp]: Computing forward predicates...
[2024-11-01 08:09:01,523 INFO  L134       CoverageAnalysis]: Checked inductivity of 2018 backedges. 30 proven. 97 refuted. 0 times theorem prover too weak. 1891 trivial. 0 not checked.
[2024-11-01 08:09:01,523 INFO  L311         TraceCheckSpWp]: Computing backward predicates...
[2024-11-01 08:09:15,936 INFO  L134       CoverageAnalysis]: Checked inductivity of 2018 backedges. 30 proven. 97 refuted. 0 times theorem prover too weak. 1891 trivial. 0 not checked.
[2024-11-01 08:09:15,936 INFO  L136   FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2024-11-01 08:09:15,936 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1921545234]
[2024-11-01 08:09:15,937 INFO  L158   FreeRefinementEngine]: IpTcStrategyModulePreferences [1921545234] provided 0 perfect and 2 imperfect interpolant sequences
[2024-11-01 08:09:15,937 INFO  L185   FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2024-11-01 08:09:15,937 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 15
[2024-11-01 08:09:15,937 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1729866811]
[2024-11-01 08:09:15,937 INFO  L85    oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2024-11-01 08:09:15,938 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 15 states
[2024-11-01 08:09:15,938 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2024-11-01 08:09:15,939 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants.
[2024-11-01 08:09:15,940 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=172, Unknown=2, NotChecked=0, Total=210
[2024-11-01 08:09:15,940 INFO  L87              Difference]: Start difference. First operand 77 states and 108 transitions. Second operand  has 15 states, 13 states have (on average 6.615384615384615) internal successors, (86), 15 states have internal predecessors, (86), 8 states have call successors, (64), 1 states have call predecessors, (64), 2 states have return successors, (64), 6 states have call predecessors, (64), 8 states have call successors, (64)
[2024-11-01 08:09:20,469 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-01 08:09:20,470 INFO  L93              Difference]: Finished difference Result 114 states and 161 transitions.
[2024-11-01 08:09:20,470 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. 
[2024-11-01 08:09:20,472 INFO  L78                 Accepts]: Start accepts. Automaton has  has 15 states, 13 states have (on average 6.615384615384615) internal successors, (86), 15 states have internal predecessors, (86), 8 states have call successors, (64), 1 states have call predecessors, (64), 2 states have return successors, (64), 6 states have call predecessors, (64), 8 states have call successors, (64) Word has length 200
[2024-11-01 08:09:20,473 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-01 08:09:20,476 INFO  L225             Difference]: With dead ends: 114
[2024-11-01 08:09:20,476 INFO  L226             Difference]: Without dead ends: 112
[2024-11-01 08:09:20,477 INFO  L431           NwaCegarLoop]: 0 DeclaredPredicates, 402 GetRequests, 385 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 9.1s TimeCoverageRelationStatistics Valid=67, Invalid=273, Unknown=2, NotChecked=0, Total=342
[2024-11-01 08:09:20,478 INFO  L432           NwaCegarLoop]: 38 mSDtfsCounter, 19 mSDsluCounter, 301 mSDsCounter, 0 mSdLazyCounter, 583 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 339 SdHoareTripleChecker+Invalid, 603 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 583 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time
[2024-11-01 08:09:20,478 INFO  L433           NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 339 Invalid, 603 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 583 Invalid, 0 Unknown, 0 Unchecked, 4.3s Time]
[2024-11-01 08:09:20,481 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 112 states.
[2024-11-01 08:09:20,503 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 112.
[2024-11-01 08:09:20,504 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 112 states, 62 states have (on average 1.0161290322580645) internal successors, (63), 62 states have internal predecessors, (63), 48 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48)
[2024-11-01 08:09:20,506 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 159 transitions.
[2024-11-01 08:09:20,507 INFO  L78                 Accepts]: Start accepts. Automaton has 112 states and 159 transitions. Word has length 200
[2024-11-01 08:09:20,508 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-01 08:09:20,508 INFO  L471      AbstractCegarLoop]: Abstraction has 112 states and 159 transitions.
[2024-11-01 08:09:20,508 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 15 states, 13 states have (on average 6.615384615384615) internal successors, (86), 15 states have internal predecessors, (86), 8 states have call successors, (64), 1 states have call predecessors, (64), 2 states have return successors, (64), 6 states have call predecessors, (64), 8 states have call successors, (64)
[2024-11-01 08:09:20,509 INFO  L276                IsEmpty]: Start isEmpty. Operand 112 states and 159 transitions.
[2024-11-01 08:09:20,517 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 300
[2024-11-01 08:09:20,518 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-01 08:09:20,518 INFO  L215           NwaCegarLoop]: trace histogram [48, 48, 48, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1]
[2024-11-01 08:09:20,582 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (4)] Ended with exit code 0
[2024-11-01 08:09:20,719 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt
[2024-11-01 08:09:20,719 INFO  L396      AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-01 08:09:20,720 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-01 08:09:20,720 INFO  L85        PathProgramCache]: Analyzing trace with hash -2140848267, now seen corresponding path program 2 times
[2024-11-01 08:09:20,720 INFO  L118   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2024-11-01 08:09:20,720 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1144329394]
[2024-11-01 08:09:20,721 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-01 08:09:20,721 INFO  L173          SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt
[2024-11-01 08:09:20,721 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4
[2024-11-01 08:09:20,723 INFO  L229       MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null)
[2024-11-01 08:09:20,725 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (5)] Waiting until timeout for monitored process
[2024-11-01 08:09:29,407 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-01 08:09:29,841 INFO  L255         TraceCheckSpWp]: Trace formula consists of 6655 conjuncts, 156 conjuncts are in the unsatisfiable core
[2024-11-01 08:09:29,896 INFO  L278         TraceCheckSpWp]: Computing forward predicates...
[2024-11-01 08:09:38,508 INFO  L134       CoverageAnalysis]: Checked inductivity of 4615 backedges. 405 proven. 343 refuted. 0 times theorem prover too weak. 3867 trivial. 0 not checked.
[2024-11-01 08:09:38,508 INFO  L311         TraceCheckSpWp]: Computing backward predicates...