/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.safe_intersymbol_analog_estimation_convergence.c


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


This is Ultimate 0.2.5-dev-b75d321-m
[2024-11-04 17:00:40,115 INFO  L188        SettingsManager]: Resetting all preferences to default values...
[2024-11-04 17:00:40,190 INFO  L114        SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Bitvector.epf
[2024-11-04 17:00:40,195 WARN  L101        SettingsManager]: Preference file contains the following unknown settings:
[2024-11-04 17:00:40,195 WARN  L103        SettingsManager]:   * de.uni_freiburg.informatik.ultimate.core.Log level for class
[2024-11-04 17:00:40,222 INFO  L130        SettingsManager]: Preferences different from defaults after loading the file:
[2024-11-04 17:00:40,223 INFO  L151        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2024-11-04 17:00:40,223 INFO  L153        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2024-11-04 17:00:40,224 INFO  L151        SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults:
[2024-11-04 17:00:40,225 INFO  L153        SettingsManager]:  * Use memory slicer=true
[2024-11-04 17:00:40,225 INFO  L151        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2024-11-04 17:00:40,226 INFO  L153        SettingsManager]:  * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2024-11-04 17:00:40,227 INFO  L151        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2024-11-04 17:00:40,228 INFO  L153        SettingsManager]:  * Create parallel compositions if possible=false
[2024-11-04 17:00:40,228 INFO  L153        SettingsManager]:  * Use SBE=true
[2024-11-04 17:00:40,228 INFO  L151        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2024-11-04 17:00:40,228 INFO  L153        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2024-11-04 17:00:40,229 INFO  L153        SettingsManager]:  * Check division by zero=IGNORE
[2024-11-04 17:00:40,229 INFO  L153        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2024-11-04 17:00:40,229 INFO  L153        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2024-11-04 17:00:40,230 INFO  L153        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2024-11-04 17:00:40,233 INFO  L153        SettingsManager]:  * Adapt memory model on pointer casts if necessary=true
[2024-11-04 17:00:40,233 INFO  L153        SettingsManager]:  * Use bitvectors instead of ints=true
[2024-11-04 17:00:40,233 INFO  L153        SettingsManager]:  * Allow undefined functions=false
[2024-11-04 17:00:40,233 INFO  L153        SettingsManager]:  * Memory model=HoenickeLindenmann_4ByteResolution
[2024-11-04 17:00:40,234 INFO  L153        SettingsManager]:  * Check if freed pointer was valid=false
[2024-11-04 17:00:40,234 INFO  L153        SettingsManager]:  * Use constant arrays=true
[2024-11-04 17:00:40,234 INFO  L151        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2024-11-04 17:00:40,234 INFO  L153        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2024-11-04 17:00:40,234 INFO  L153        SettingsManager]:  * Only consider context switches at boundaries of atomic blocks=true
[2024-11-04 17:00:40,235 INFO  L153        SettingsManager]:  * SMT solver=External_DefaultMode
[2024-11-04 17:00:40,235 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2024-11-04 17:00:40,235 INFO  L151        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2024-11-04 17:00:40,235 INFO  L153        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2024-11-04 17:00:40,236 INFO  L153        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopHeads
[2024-11-04 17:00:40,236 INFO  L153        SettingsManager]:  * Trace refinement strategy=WOLF
[2024-11-04 17:00:40,237 INFO  L153        SettingsManager]:  * Command for external solver=cvc4 --incremental --print-success --lang smt 
[2024-11-04 17:00:40,237 INFO  L153        SettingsManager]:  * Apply one-shot large block encoding in concurrent analysis=false
[2024-11-04 17:00:40,238 INFO  L153        SettingsManager]:  * Automaton type used in concurrency analysis=PETRI_NET
[2024-11-04 17:00:40,238 INFO  L153        SettingsManager]:  * Order on configurations for Petri net unfoldings=DBO
[2024-11-04 17:00:40,238 INFO  L153        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2024-11-04 17:00:40,238 INFO  L153        SettingsManager]:  * Looper check in Petri net analysis=SEMANTIC
WARNING: An illegal reflective access operation has occurred
WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int)
WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Allow undefined functions -> true
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> External_ModelsAndUnsatCoreMode
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Command for external solver -> z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-04 17:00:40,449 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2024-11-04 17:00:40,473 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2024-11-04 17:00:40,475 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2024-11-04 17:00:40,476 INFO  L270        PluginConnector]: Initializing CDTParser...
[2024-11-04 17:00:40,476 INFO  L274        PluginConnector]: CDTParser initialized
[2024-11-04 17:00:40,477 INFO  L431   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.safe_intersymbol_analog_estimation_convergence.c
[2024-11-04 17:00:41,912 INFO  L533              CDTParser]: Created temporary CDT project at NULL
[2024-11-04 17:00:42,164 INFO  L384              CDTParser]: Found 1 translation units.
[2024-11-04 17:00:42,165 INFO  L180              CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.safe_intersymbol_analog_estimation_convergence.c
[2024-11-04 17:00:42,192 INFO  L427              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6ea98d99c/d0c3d6ba4237486eac2456b05f21e6d0/FLAGc9d8c029d
[2024-11-04 17:00:42,493 INFO  L435              CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6ea98d99c/d0c3d6ba4237486eac2456b05f21e6d0
[2024-11-04 17:00:42,495 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2024-11-04 17:00:42,496 INFO  L133        ToolchainWalker]: Walking toolchain with 5 elements.
[2024-11-04 17:00:42,497 INFO  L112        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2024-11-04 17:00:42,498 INFO  L270        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2024-11-04 17:00:42,502 INFO  L274        PluginConnector]: CACSL2BoogieTranslator initialized
[2024-11-04 17:00:42,502 INFO  L184        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.11 05:00:42" (1/1) ...
[2024-11-04 17:00:42,503 INFO  L204        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@517d87c7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 05:00:42, skipping insertion in model container
[2024-11-04 17:00:42,504 INFO  L184        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.11 05:00:42" (1/1) ...
[2024-11-04 17:00:42,548 INFO  L175         MainTranslator]: Built tables and reachable declarations
[2024-11-04 17:00:42,737 WARN  L250   ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.safe_intersymbol_analog_estimation_convergence.c[1311,1324]
[2024-11-04 17:00:42,934 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2024-11-04 17:00:42,957 INFO  L200         MainTranslator]: Completed pre-run
[2024-11-04 17:00:42,968 WARN  L250   ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.safe_intersymbol_analog_estimation_convergence.c[1311,1324]
[2024-11-04 17:00:43,091 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2024-11-04 17:00:43,121 INFO  L204         MainTranslator]: Completed translation
[2024-11-04 17:00:43,121 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 05:00:43 WrapperNode
[2024-11-04 17:00:43,124 INFO  L131        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2024-11-04 17:00:43,126 INFO  L112        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2024-11-04 17:00:43,126 INFO  L270        PluginConnector]: Initializing Boogie Procedure Inliner...
[2024-11-04 17:00:43,126 INFO  L274        PluginConnector]: Boogie Procedure Inliner initialized
[2024-11-04 17:00:43,132 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 05:00:43" (1/1) ...
[2024-11-04 17:00:43,160 INFO  L184        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 05:00:43" (1/1) ...
[2024-11-04 17:00:43,209 INFO  L138                Inliner]: procedures = 17, calls = 10, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 656
[2024-11-04 17:00:43,210 INFO  L131        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2024-11-04 17:00:43,211 INFO  L112        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2024-11-04 17:00:43,211 INFO  L270        PluginConnector]: Initializing Boogie Preprocessor...
[2024-11-04 17:00:43,211 INFO  L274        PluginConnector]: Boogie Preprocessor initialized
[2024-11-04 17:00:43,228 INFO  L184        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 05:00:43" (1/1) ...
[2024-11-04 17:00:43,228 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 05:00:43" (1/1) ...
[2024-11-04 17:00:43,234 INFO  L184        PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 05:00:43" (1/1) ...
[2024-11-04 17:00:43,266 INFO  L175           MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0].
[2024-11-04 17:00:43,266 INFO  L184        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 05:00:43" (1/1) ...
[2024-11-04 17:00:43,267 INFO  L184        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 05:00:43" (1/1) ...
[2024-11-04 17:00:43,297 INFO  L184        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 05:00:43" (1/1) ...
[2024-11-04 17:00:43,304 INFO  L184        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 05:00:43" (1/1) ...
[2024-11-04 17:00:43,315 INFO  L184        PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 05:00:43" (1/1) ...
[2024-11-04 17:00:43,325 INFO  L184        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 05:00:43" (1/1) ...
[2024-11-04 17:00:43,335 INFO  L131        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2024-11-04 17:00:43,340 INFO  L112        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2024-11-04 17:00:43,340 INFO  L270        PluginConnector]: Initializing RCFGBuilder...
[2024-11-04 17:00:43,340 INFO  L274        PluginConnector]: RCFGBuilder initialized
[2024-11-04 17:00:43,341 INFO  L184        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 05:00:43" (1/1) ...
[2024-11-04 17:00:43,347 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2024-11-04 17:00:43,358 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2024-11-04 17:00:43,372 INFO  L229       MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null)
[2024-11-04 17:00:43,377 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process
[2024-11-04 17:00:43,403 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2024-11-04 17:00:43,404 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0
[2024-11-04 17:00:43,404 INFO  L130     BoogieDeclarations]: Found specification of procedure assume_abort_if_not
[2024-11-04 17:00:43,404 INFO  L138     BoogieDeclarations]: Found implementation of procedure assume_abort_if_not
[2024-11-04 17:00:43,404 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2024-11-04 17:00:43,405 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2024-11-04 17:00:43,589 INFO  L238             CfgBuilder]: Building ICFG
[2024-11-04 17:00:43,591 INFO  L264             CfgBuilder]: Building CFG for each procedure with an implementation
[2024-11-04 17:00:44,337 INFO  L?                        ?]: Removed 267 outVars from TransFormulas that were not future-live.
[2024-11-04 17:00:44,338 INFO  L287             CfgBuilder]: Performing block encoding
[2024-11-04 17:00:44,350 INFO  L311             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2024-11-04 17:00:44,350 INFO  L316             CfgBuilder]: Removed 1 assume(true) statements.
[2024-11-04 17:00:44,350 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.11 05:00:44 BoogieIcfgContainer
[2024-11-04 17:00:44,351 INFO  L131        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2024-11-04 17:00:44,353 INFO  L112        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2024-11-04 17:00:44,353 INFO  L270        PluginConnector]: Initializing TraceAbstraction...
[2024-11-04 17:00:44,356 INFO  L274        PluginConnector]: TraceAbstraction initialized
[2024-11-04 17:00:44,356 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.11 05:00:42" (1/3) ...
[2024-11-04 17:00:44,357 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a2b7e20 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.11 05:00:44, skipping insertion in model container
[2024-11-04 17:00:44,357 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 05:00:43" (2/3) ...
[2024-11-04 17:00:44,357 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a2b7e20 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.11 05:00:44, skipping insertion in model container
[2024-11-04 17:00:44,358 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.11 05:00:44" (3/3) ...
[2024-11-04 17:00:44,359 INFO  L112   eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.safe_intersymbol_analog_estimation_convergence.c
[2024-11-04 17:00:44,373 INFO  L214   ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2024-11-04 17:00:44,374 INFO  L154   ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2024-11-04 17:00:44,427 INFO  L332      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2024-11-04 17:00:44,434 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;@7e65a5e5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2024-11-04 17:00:44,434 INFO  L334      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2024-11-04 17:00:44,438 INFO  L276                IsEmpty]: Start isEmpty. Operand  has 18 states, 13 states have (on average 1.3076923076923077) internal successors, (17), 14 states have internal predecessors, (17), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2024-11-04 17:00:44,444 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 18
[2024-11-04 17:00:44,444 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-04 17:00:44,445 INFO  L215           NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-04 17:00:44,445 INFO  L396      AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-04 17:00:44,450 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-04 17:00:44,450 INFO  L85        PathProgramCache]: Analyzing trace with hash 896107007, now seen corresponding path program 1 times
[2024-11-04 17:00:44,457 INFO  L118   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2024-11-04 17:00:44,459 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2010705694]
[2024-11-04 17:00:44,459 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-04 17:00:44,461 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-04 17:00:44,461 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2024-11-04 17:00:44,464 INFO  L229       MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-04 17:00:44,468 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process
[2024-11-04 17:00:44,811 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-04 17:00:44,822 INFO  L255         TraceCheckSpWp]: Trace formula consists of 350 conjuncts, 23 conjuncts are in the unsatisfiable core
[2024-11-04 17:00:44,833 INFO  L278         TraceCheckSpWp]: Computing forward predicates...
[2024-11-04 17:00:45,122 INFO  L134       CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2024-11-04 17:00:45,123 INFO  L311         TraceCheckSpWp]: Computing backward predicates...
[2024-11-04 17:00:45,585 INFO  L134       CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2024-11-04 17:00:45,586 INFO  L136   FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2024-11-04 17:00:45,586 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2010705694]
[2024-11-04 17:00:45,587 INFO  L158   FreeRefinementEngine]: IpTcStrategyModulePreferences [2010705694] provided 0 perfect and 2 imperfect interpolant sequences
[2024-11-04 17:00:45,588 INFO  L185   FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2024-11-04 17:00:45,588 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 11
[2024-11-04 17:00:45,590 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [456471301]
[2024-11-04 17:00:45,590 INFO  L85    oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2024-11-04 17:00:45,594 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 11 states
[2024-11-04 17:00:45,595 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2024-11-04 17:00:45,617 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants.
[2024-11-04 17:00:45,617 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110
[2024-11-04 17:00:45,619 INFO  L87              Difference]: Start difference. First operand  has 18 states, 13 states have (on average 1.3076923076923077) internal successors, (17), 14 states have internal predecessors, (17), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand  has 11 states, 9 states have (on average 2.2222222222222223) internal successors, (20), 11 states have internal predecessors, (20), 4 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 4 states have call successors, (4)
[2024-11-04 17:00:45,991 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-04 17:00:45,991 INFO  L93              Difference]: Finished difference Result 38 states and 53 transitions.
[2024-11-04 17:00:45,993 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. 
[2024-11-04 17:00:45,994 INFO  L78                 Accepts]: Start accepts. Automaton has  has 11 states, 9 states have (on average 2.2222222222222223) internal successors, (20), 11 states have internal predecessors, (20), 4 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 4 states have call successors, (4) Word has length 17
[2024-11-04 17:00:45,994 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-04 17:00:46,000 INFO  L225             Difference]: With dead ends: 38
[2024-11-04 17:00:46,001 INFO  L226             Difference]: Without dead ends: 22
[2024-11-04 17:00:46,005 INFO  L431           NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132
[2024-11-04 17:00:46,008 INFO  L432           NwaCegarLoop]: 8 mSDtfsCounter, 7 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time
[2024-11-04 17:00:46,010 INFO  L433           NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 35 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time]
[2024-11-04 17:00:46,029 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 22 states.
[2024-11-04 17:00:46,051 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 21.
[2024-11-04 17:00:46,053 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 21 states, 15 states have (on average 1.0666666666666667) internal successors, (16), 15 states have internal predecessors, (16), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4)
[2024-11-04 17:00:46,053 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 24 transitions.
[2024-11-04 17:00:46,055 INFO  L78                 Accepts]: Start accepts. Automaton has 21 states and 24 transitions. Word has length 17
[2024-11-04 17:00:46,056 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-04 17:00:46,057 INFO  L471      AbstractCegarLoop]: Abstraction has 21 states and 24 transitions.
[2024-11-04 17:00:46,058 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 11 states, 9 states have (on average 2.2222222222222223) internal successors, (20), 11 states have internal predecessors, (20), 4 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 4 states have call successors, (4)
[2024-11-04 17:00:46,059 INFO  L276                IsEmpty]: Start isEmpty. Operand 21 states and 24 transitions.
[2024-11-04 17:00:46,060 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 33
[2024-11-04 17:00:46,060 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-04 17:00:46,060 INFO  L215           NwaCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1]
[2024-11-04 17:00:46,080 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0
[2024-11-04 17:00:46,261 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-04 17:00:46,262 INFO  L396      AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-04 17:00:46,262 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-04 17:00:46,262 INFO  L85        PathProgramCache]: Analyzing trace with hash 91156387, now seen corresponding path program 1 times
[2024-11-04 17:00:46,262 INFO  L118   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2024-11-04 17:00:46,263 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1311305483]
[2024-11-04 17:00:46,263 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-04 17:00:46,263 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-04 17:00:46,263 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2024-11-04 17:00:46,265 INFO  L229       MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-04 17:00:46,267 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process
[2024-11-04 17:00:46,682 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-04 17:00:46,700 INFO  L255         TraceCheckSpWp]: Trace formula consists of 606 conjuncts, 27 conjuncts are in the unsatisfiable core
[2024-11-04 17:00:46,711 INFO  L278         TraceCheckSpWp]: Computing forward predicates...
[2024-11-04 17:00:47,047 INFO  L134       CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked.
[2024-11-04 17:00:47,047 INFO  L311         TraceCheckSpWp]: Computing backward predicates...
[2024-11-04 17:00:47,705 INFO  L134       CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked.
[2024-11-04 17:00:47,706 INFO  L136   FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2024-11-04 17:00:47,706 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1311305483]
[2024-11-04 17:00:47,706 INFO  L158   FreeRefinementEngine]: IpTcStrategyModulePreferences [1311305483] provided 0 perfect and 2 imperfect interpolant sequences
[2024-11-04 17:00:47,706 INFO  L185   FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2024-11-04 17:00:47,707 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10
[2024-11-04 17:00:47,707 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [26784743]
[2024-11-04 17:00:47,707 INFO  L85    oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2024-11-04 17:00:47,708 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 10 states
[2024-11-04 17:00:47,708 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2024-11-04 17:00:47,709 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants.
[2024-11-04 17:00:47,709 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90
[2024-11-04 17:00:47,710 INFO  L87              Difference]: Start difference. First operand 21 states and 24 transitions. Second operand  has 10 states, 10 states have (on average 2.5) internal successors, (25), 10 states have internal predecessors, (25), 4 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8)
[2024-11-04 17:00:49,760 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-04 17:00:49,760 INFO  L93              Difference]: Finished difference Result 45 states and 56 transitions.
[2024-11-04 17:00:49,760 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2024-11-04 17:00:49,761 INFO  L78                 Accepts]: Start accepts. Automaton has  has 10 states, 10 states have (on average 2.5) internal successors, (25), 10 states have internal predecessors, (25), 4 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) Word has length 32
[2024-11-04 17:00:49,761 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-04 17:00:49,762 INFO  L225             Difference]: With dead ends: 45
[2024-11-04 17:00:49,762 INFO  L226             Difference]: Without dead ends: 43
[2024-11-04 17:00:49,763 INFO  L431           NwaCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=78, Invalid=132, Unknown=0, NotChecked=0, Total=210
[2024-11-04 17:00:49,763 INFO  L432           NwaCegarLoop]: 11 mSDtfsCounter, 10 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time
[2024-11-04 17:00:49,764 INFO  L433           NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 46 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time]
[2024-11-04 17:00:49,765 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 43 states.
[2024-11-04 17:00:49,775 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 42.
[2024-11-04 17:00:49,776 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 42 states, 30 states have (on average 1.0333333333333334) internal successors, (31), 30 states have internal predecessors, (31), 10 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10)
[2024-11-04 17:00:49,778 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 51 transitions.
[2024-11-04 17:00:49,779 INFO  L78                 Accepts]: Start accepts. Automaton has 42 states and 51 transitions. Word has length 32
[2024-11-04 17:00:49,780 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-04 17:00:49,780 INFO  L471      AbstractCegarLoop]: Abstraction has 42 states and 51 transitions.
[2024-11-04 17:00:49,780 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 10 states, 10 states have (on average 2.5) internal successors, (25), 10 states have internal predecessors, (25), 4 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8)
[2024-11-04 17:00:49,780 INFO  L276                IsEmpty]: Start isEmpty. Operand 42 states and 51 transitions.
[2024-11-04 17:00:49,782 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 78
[2024-11-04 17:00:49,782 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-04 17:00:49,782 INFO  L215           NwaCegarLoop]: trace histogram [10, 10, 10, 5, 5, 5, 5, 5, 5, 5, 4, 4, 1, 1, 1, 1]
[2024-11-04 17:00:49,806 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0
[2024-11-04 17:00:49,986 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-04 17:00:49,987 INFO  L396      AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-04 17:00:49,987 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-04 17:00:49,988 INFO  L85        PathProgramCache]: Analyzing trace with hash 257648895, now seen corresponding path program 2 times
[2024-11-04 17:00:49,988 INFO  L118   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2024-11-04 17:00:49,988 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1953947644]
[2024-11-04 17:00:49,988 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-04 17:00:49,988 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-04 17:00:49,988 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2024-11-04 17:00:49,990 INFO  L229       MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-04 17:00:49,993 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process
[2024-11-04 17:00:50,808 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-04 17:00:50,848 INFO  L255         TraceCheckSpWp]: Trace formula consists of 1374 conjuncts, 31 conjuncts are in the unsatisfiable core
[2024-11-04 17:00:50,864 INFO  L278         TraceCheckSpWp]: Computing forward predicates...
[2024-11-04 17:00:52,111 INFO  L134       CoverageAnalysis]: Checked inductivity of 246 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked.
[2024-11-04 17:00:52,112 INFO  L311         TraceCheckSpWp]: Computing backward predicates...
[2024-11-04 17:00:54,204 INFO  L134       CoverageAnalysis]: Checked inductivity of 246 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked.
[2024-11-04 17:00:54,204 INFO  L136   FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2024-11-04 17:00:54,205 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1953947644]
[2024-11-04 17:00:54,205 INFO  L158   FreeRefinementEngine]: IpTcStrategyModulePreferences [1953947644] provided 0 perfect and 2 imperfect interpolant sequences
[2024-11-04 17:00:54,205 INFO  L185   FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2024-11-04 17:00:54,205 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16
[2024-11-04 17:00:54,205 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1745310519]
[2024-11-04 17:00:54,205 INFO  L85    oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2024-11-04 17:00:54,206 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 16 states
[2024-11-04 17:00:54,208 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2024-11-04 17:00:54,209 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants.
[2024-11-04 17:00:54,209 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=181, Unknown=0, NotChecked=0, Total=240
[2024-11-04 17:00:54,210 INFO  L87              Difference]: Start difference. First operand 42 states and 51 transitions. Second operand  has 16 states, 16 states have (on average 3.4375) internal successors, (55), 16 states have internal predecessors, (55), 10 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 10 states have call predecessors, (20), 10 states have call successors, (20)
[2024-11-04 17:00:56,677 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-04 17:00:56,677 INFO  L93              Difference]: Finished difference Result 59 states and 73 transitions.
[2024-11-04 17:00:56,678 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. 
[2024-11-04 17:00:56,678 INFO  L78                 Accepts]: Start accepts. Automaton has  has 16 states, 16 states have (on average 3.4375) internal successors, (55), 16 states have internal predecessors, (55), 10 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 10 states have call predecessors, (20), 10 states have call successors, (20) Word has length 77
[2024-11-04 17:00:56,679 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-04 17:00:56,680 INFO  L225             Difference]: With dead ends: 59
[2024-11-04 17:00:56,680 INFO  L226             Difference]: Without dead ends: 57
[2024-11-04 17:00:56,680 INFO  L431           NwaCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=116, Invalid=346, Unknown=0, NotChecked=0, Total=462
[2024-11-04 17:00:56,681 INFO  L432           NwaCegarLoop]: 27 mSDtfsCounter, 6 mSDsluCounter, 181 mSDsCounter, 0 mSdLazyCounter, 269 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 208 SdHoareTripleChecker+Invalid, 274 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 269 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time
[2024-11-04 17:00:56,682 INFO  L433           NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 208 Invalid, 274 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 269 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time]
[2024-11-04 17:00:56,682 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 57 states.
[2024-11-04 17:00:56,697 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 56.
[2024-11-04 17:00:56,697 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 56 states, 40 states have (on average 1.025) internal successors, (41), 40 states have internal predecessors, (41), 14 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14)
[2024-11-04 17:00:56,701 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 69 transitions.
[2024-11-04 17:00:56,701 INFO  L78                 Accepts]: Start accepts. Automaton has 56 states and 69 transitions. Word has length 77
[2024-11-04 17:00:56,702 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-04 17:00:56,702 INFO  L471      AbstractCegarLoop]: Abstraction has 56 states and 69 transitions.
[2024-11-04 17:00:56,702 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 16 states, 16 states have (on average 3.4375) internal successors, (55), 16 states have internal predecessors, (55), 10 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 10 states have call predecessors, (20), 10 states have call successors, (20)
[2024-11-04 17:00:56,702 INFO  L276                IsEmpty]: Start isEmpty. Operand 56 states and 69 transitions.
[2024-11-04 17:00:56,704 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 108
[2024-11-04 17:00:56,704 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-04 17:00:56,707 INFO  L215           NwaCegarLoop]: trace histogram [14, 14, 14, 7, 7, 7, 7, 7, 7, 7, 6, 6, 1, 1, 1, 1]
[2024-11-04 17:00:56,752 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0
[2024-11-04 17:00:56,908 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-04 17:00:56,909 INFO  L396      AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-04 17:00:56,909 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-04 17:00:56,909 INFO  L85        PathProgramCache]: Analyzing trace with hash -761811841, now seen corresponding path program 3 times
[2024-11-04 17:00:56,909 INFO  L118   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2024-11-04 17:00:56,909 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1826699889]
[2024-11-04 17:00:56,909 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-04 17:00:56,910 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-04 17:00:56,910 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2024-11-04 17:00:56,911 INFO  L229       MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-04 17:00:56,911 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process
[2024-11-04 17:00:59,380 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-04 17:00:59,454 INFO  L255         TraceCheckSpWp]: Trace formula consists of 1886 conjuncts, 702 conjuncts are in the unsatisfiable core
[2024-11-04 17:00:59,519 INFO  L278         TraceCheckSpWp]: Computing forward predicates...