./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/bitvector/gcd_1.c --full-output --architecture 32bit


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


Checking for ERROR reachability
Using default analysis
Version e2fb8bed
Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/bitvector/gcd_1.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) )

 --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 739715c3f9b6cd78741b6d155210624f17d4bf167a3be4c6127f06707080edde
--- Real Ultimate output ---
This is Ultimate 0.3.0-?-e2fb8be-m
[2025-03-08 00:52:01,973 INFO  L188        SettingsManager]: Resetting all preferences to default values...
[2025-03-08 00:52:02,021 INFO  L114        SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf
[2025-03-08 00:52:02,027 WARN  L101        SettingsManager]: Preference file contains the following unknown settings:
[2025-03-08 00:52:02,028 WARN  L103        SettingsManager]:   * de.uni_freiburg.informatik.ultimate.core.Log level for class
[2025-03-08 00:52:02,042 INFO  L130        SettingsManager]: Preferences different from defaults after loading the file:
[2025-03-08 00:52:02,042 INFO  L151        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2025-03-08 00:52:02,042 INFO  L153        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2025-03-08 00:52:02,042 INFO  L151        SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults:
[2025-03-08 00:52:02,042 INFO  L153        SettingsManager]:  * Use memory slicer=true
[2025-03-08 00:52:02,043 INFO  L151        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2025-03-08 00:52:02,043 INFO  L153        SettingsManager]:  * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2025-03-08 00:52:02,043 INFO  L151        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2025-03-08 00:52:02,043 INFO  L153        SettingsManager]:  * Create parallel compositions if possible=false
[2025-03-08 00:52:02,043 INFO  L153        SettingsManager]:  * Use SBE=true
[2025-03-08 00:52:02,043 INFO  L151        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2025-03-08 00:52:02,043 INFO  L153        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2025-03-08 00:52:02,043 INFO  L153        SettingsManager]:  * sizeof long=4
[2025-03-08 00:52:02,043 INFO  L153        SettingsManager]:  * Overapproximate operations on floating types=true
[2025-03-08 00:52:02,043 INFO  L153        SettingsManager]:  * sizeof POINTER=4
[2025-03-08 00:52:02,043 INFO  L153        SettingsManager]:  * Check division by zero=IGNORE
[2025-03-08 00:52:02,043 INFO  L153        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2025-03-08 00:52:02,043 INFO  L153        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2025-03-08 00:52:02,043 INFO  L153        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2025-03-08 00:52:02,043 INFO  L153        SettingsManager]:  * sizeof long double=12
[2025-03-08 00:52:02,043 INFO  L153        SettingsManager]:  * Check if freed pointer was valid=false
[2025-03-08 00:52:02,044 INFO  L153        SettingsManager]:  * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR
[2025-03-08 00:52:02,044 INFO  L153        SettingsManager]:  * Use constant arrays=true
[2025-03-08 00:52:02,044 INFO  L151        SettingsManager]: Preferences of IcfgBuilder differ from their defaults:
[2025-03-08 00:52:02,044 INFO  L153        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2025-03-08 00:52:02,044 INFO  L153        SettingsManager]:  * Only consider context switches at boundaries of atomic blocks=true
[2025-03-08 00:52:02,044 INFO  L153        SettingsManager]:  * SMT solver=External_DefaultMode
[2025-03-08 00:52:02,044 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2025-03-08 00:52:02,044 INFO  L151        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2025-03-08 00:52:02,044 INFO  L153        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2025-03-08 00:52:02,044 INFO  L153        SettingsManager]:  * Compute procedure contracts=false
[2025-03-08 00:52:02,044 INFO  L153        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopHeads
[2025-03-08 00:52:02,044 INFO  L153        SettingsManager]:  * Trace refinement strategy=CAMEL
[2025-03-08 00:52:02,044 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2025-03-08 00:52:02,044 INFO  L153        SettingsManager]:  * Apply one-shot large block encoding in concurrent analysis=false
[2025-03-08 00:52:02,044 INFO  L153        SettingsManager]:  * Automaton type used in concurrency analysis=PETRI_NET
[2025-03-08 00:52:02,044 INFO  L153        SettingsManager]:  * Order on configurations for Petri net unfoldings=DBO
[2025-03-08 00:52:02,047 INFO  L153        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2025-03-08 00:52:02,047 INFO  L153        SettingsManager]:  * Looper check in Petri net analysis=SEMANTIC
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) )


Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 739715c3f9b6cd78741b6d155210624f17d4bf167a3be4c6127f06707080edde
[2025-03-08 00:52:02,249 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2025-03-08 00:52:02,259 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2025-03-08 00:52:02,261 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2025-03-08 00:52:02,262 INFO  L270        PluginConnector]: Initializing CDTParser...
[2025-03-08 00:52:02,263 INFO  L274        PluginConnector]: CDTParser initialized
[2025-03-08 00:52:02,264 INFO  L431   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/bitvector/gcd_1.c
[2025-03-08 00:52:03,399 INFO  L533              CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/12c66397d/18e3019fcad04fb68ea97316f905ce11/FLAGe553b4898
[2025-03-08 00:52:03,621 INFO  L384              CDTParser]: Found 1 translation units.
[2025-03-08 00:52:03,622 INFO  L180              CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/bitvector/gcd_1.c
[2025-03-08 00:52:03,627 INFO  L427              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/12c66397d/18e3019fcad04fb68ea97316f905ce11/FLAGe553b4898
[2025-03-08 00:52:03,976 INFO  L435              CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/12c66397d/18e3019fcad04fb68ea97316f905ce11
[2025-03-08 00:52:03,980 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2025-03-08 00:52:03,982 INFO  L133        ToolchainWalker]: Walking toolchain with 6 elements.
[2025-03-08 00:52:03,983 INFO  L112        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2025-03-08 00:52:03,983 INFO  L270        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2025-03-08 00:52:03,986 INFO  L274        PluginConnector]: CACSL2BoogieTranslator initialized
[2025-03-08 00:52:03,986 INFO  L184        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.03 12:52:03" (1/1) ...
[2025-03-08 00:52:03,987 INFO  L204        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5045fa32 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 12:52:03, skipping insertion in model container
[2025-03-08 00:52:03,987 INFO  L184        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.03 12:52:03" (1/1) ...
[2025-03-08 00:52:03,997 INFO  L175         MainTranslator]: Built tables and reachable declarations
[2025-03-08 00:52:04,086 WARN  L250   ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/bitvector/gcd_1.c[664,677]
[2025-03-08 00:52:04,095 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2025-03-08 00:52:04,101 INFO  L200         MainTranslator]: Completed pre-run
[2025-03-08 00:52:04,110 WARN  L250   ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/bitvector/gcd_1.c[664,677]
[2025-03-08 00:52:04,115 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2025-03-08 00:52:04,124 INFO  L204         MainTranslator]: Completed translation
[2025-03-08 00:52:04,125 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 12:52:04 WrapperNode
[2025-03-08 00:52:04,125 INFO  L131        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2025-03-08 00:52:04,126 INFO  L112        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2025-03-08 00:52:04,126 INFO  L270        PluginConnector]: Initializing Boogie Procedure Inliner...
[2025-03-08 00:52:04,126 INFO  L274        PluginConnector]: Boogie Procedure Inliner initialized
[2025-03-08 00:52:04,131 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 12:52:04" (1/1) ...
[2025-03-08 00:52:04,138 INFO  L184        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 12:52:04" (1/1) ...
[2025-03-08 00:52:04,148 INFO  L138                Inliner]: procedures = 14, calls = 17, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 53
[2025-03-08 00:52:04,148 INFO  L131        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2025-03-08 00:52:04,148 INFO  L112        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2025-03-08 00:52:04,149 INFO  L270        PluginConnector]: Initializing Boogie Preprocessor...
[2025-03-08 00:52:04,149 INFO  L274        PluginConnector]: Boogie Preprocessor initialized
[2025-03-08 00:52:04,154 INFO  L184        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 12:52:04" (1/1) ...
[2025-03-08 00:52:04,154 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 12:52:04" (1/1) ...
[2025-03-08 00:52:04,155 INFO  L184        PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 12:52:04" (1/1) ...
[2025-03-08 00:52:04,162 INFO  L175           MemorySlicer]: Split 10 memory accesses to 2 slices as follows [2, 8]. 80 percent of accesses are in the largest equivalence class. The 10 initializations are split as follows [2, 8]. The 0 writes are split as follows [0, 0].
[2025-03-08 00:52:04,162 INFO  L184        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 12:52:04" (1/1) ...
[2025-03-08 00:52:04,162 INFO  L184        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 12:52:04" (1/1) ...
[2025-03-08 00:52:04,164 INFO  L184        PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 12:52:04" (1/1) ...
[2025-03-08 00:52:04,165 INFO  L184        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 12:52:04" (1/1) ...
[2025-03-08 00:52:04,165 INFO  L184        PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 12:52:04" (1/1) ...
[2025-03-08 00:52:04,165 INFO  L184        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 12:52:04" (1/1) ...
[2025-03-08 00:52:04,166 INFO  L131        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2025-03-08 00:52:04,167 INFO  L112        PluginConnector]: ------------------------IcfgBuilder----------------------------
[2025-03-08 00:52:04,168 INFO  L270        PluginConnector]: Initializing IcfgBuilder...
[2025-03-08 00:52:04,168 INFO  L274        PluginConnector]: IcfgBuilder initialized
[2025-03-08 00:52:04,169 INFO  L184        PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 12:52:04" (1/1) ...
[2025-03-08 00:52:04,172 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2025-03-08 00:52:04,182 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2025-03-08 00:52:04,194 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)
[2025-03-08 00:52:04,197 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
[2025-03-08 00:52:04,214 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2025-03-08 00:52:04,214 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int#0
[2025-03-08 00:52:04,214 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int#1
[2025-03-08 00:52:04,214 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2025-03-08 00:52:04,214 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2025-03-08 00:52:04,251 INFO  L256             CfgBuilder]: Building ICFG
[2025-03-08 00:52:04,252 INFO  L286             CfgBuilder]: Building CFG for each procedure with an implementation
[2025-03-08 00:52:04,340 INFO  L?                        ?]: Removed 16 outVars from TransFormulas that were not future-live.
[2025-03-08 00:52:04,340 INFO  L307             CfgBuilder]: Performing block encoding
[2025-03-08 00:52:04,346 INFO  L331             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2025-03-08 00:52:04,346 INFO  L336             CfgBuilder]: Removed 0 assume(true) statements.
[2025-03-08 00:52:04,347 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.03 12:52:04 BoogieIcfgContainer
[2025-03-08 00:52:04,347 INFO  L131        PluginConnector]: ------------------------ END IcfgBuilder----------------------------
[2025-03-08 00:52:04,348 INFO  L112        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2025-03-08 00:52:04,349 INFO  L270        PluginConnector]: Initializing TraceAbstraction...
[2025-03-08 00:52:04,352 INFO  L274        PluginConnector]: TraceAbstraction initialized
[2025-03-08 00:52:04,352 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.03 12:52:03" (1/3) ...
[2025-03-08 00:52:04,352 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d26ab4b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.03 12:52:04, skipping insertion in model container
[2025-03-08 00:52:04,353 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 12:52:04" (2/3) ...
[2025-03-08 00:52:04,353 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d26ab4b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.03 12:52:04, skipping insertion in model container
[2025-03-08 00:52:04,353 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.03 12:52:04" (3/3) ...
[2025-03-08 00:52:04,354 INFO  L128   eAbstractionObserver]: Analyzing ICFG gcd_1.c
[2025-03-08 00:52:04,365 INFO  L216   ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2025-03-08 00:52:04,366 INFO  L151   ceAbstractionStarter]: Applying trace abstraction to ICFG gcd_1.c that has 1 procedures, 15 locations, 1 initial locations, 1 loop locations, and 1 error locations.
[2025-03-08 00:52:04,406 INFO  L332      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2025-03-08 00:52:04,416 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;@7f58cb9c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2025-03-08 00:52:04,416 INFO  L334      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2025-03-08 00:52:04,419 INFO  L276                IsEmpty]: Start isEmpty. Operand  has 15 states, 13 states have (on average 1.4615384615384615) internal successors, (19), 14 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2025-03-08 00:52:04,424 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 10
[2025-03-08 00:52:04,424 INFO  L210           NwaCegarLoop]: Found error trace
[2025-03-08 00:52:04,424 INFO  L218           NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1]
[2025-03-08 00:52:04,424 INFO  L396      AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2025-03-08 00:52:04,427 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2025-03-08 00:52:04,428 INFO  L85        PathProgramCache]: Analyzing trace with hash -559136949, now seen corresponding path program 1 times
[2025-03-08 00:52:04,433 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2025-03-08 00:52:04,435 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1757760450]
[2025-03-08 00:52:04,435 INFO  L97    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2025-03-08 00:52:04,436 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2025-03-08 00:52:04,498 INFO  L108    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes.
[2025-03-08 00:52:04,528 INFO  L111    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements.
[2025-03-08 00:52:04,528 INFO  L114    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s)
[2025-03-08 00:52:04,529 INFO  L115    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2025-03-08 00:52:04,656 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2025-03-08 00:52:04,657 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2025-03-08 00:52:04,657 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1757760450]
[2025-03-08 00:52:04,658 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1757760450] provided 1 perfect and 0 imperfect interpolant sequences
[2025-03-08 00:52:04,658 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2025-03-08 00:52:04,659 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2025-03-08 00:52:04,660 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [242915065]
[2025-03-08 00:52:04,660 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2025-03-08 00:52:04,663 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2025-03-08 00:52:04,663 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2025-03-08 00:52:04,677 INFO  L144   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2025-03-08 00:52:04,677 INFO  L146   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2025-03-08 00:52:04,679 INFO  L87              Difference]: Start difference. First operand  has 15 states, 13 states have (on average 1.4615384615384615) internal successors, (19), 14 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand  has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2025-03-08 00:52:04,697 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2025-03-08 00:52:04,697 INFO  L93              Difference]: Finished difference Result 26 states and 32 transitions.
[2025-03-08 00:52:04,698 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2025-03-08 00:52:04,699 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9
[2025-03-08 00:52:04,700 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2025-03-08 00:52:04,704 INFO  L225             Difference]: With dead ends: 26
[2025-03-08 00:52:04,704 INFO  L226             Difference]: Without dead ends: 11
[2025-03-08 00:52:04,706 INFO  L434           NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2025-03-08 00:52:04,707 INFO  L435           NwaCegarLoop]: 15 mSDtfsCounter, 2 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2025-03-08 00:52:04,709 INFO  L436           NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 25 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2025-03-08 00:52:04,719 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 11 states.
[2025-03-08 00:52:04,726 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11.
[2025-03-08 00:52:04,727 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 11 states, 10 states have (on average 1.2) internal successors, (12), 10 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2025-03-08 00:52:04,729 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 12 transitions.
[2025-03-08 00:52:04,731 INFO  L78                 Accepts]: Start accepts. Automaton has 11 states and 12 transitions. Word has length 9
[2025-03-08 00:52:04,731 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2025-03-08 00:52:04,731 INFO  L471      AbstractCegarLoop]: Abstraction has 11 states and 12 transitions.
[2025-03-08 00:52:04,732 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2025-03-08 00:52:04,732 INFO  L276                IsEmpty]: Start isEmpty. Operand 11 states and 12 transitions.
[2025-03-08 00:52:04,733 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 11
[2025-03-08 00:52:04,733 INFO  L210           NwaCegarLoop]: Found error trace
[2025-03-08 00:52:04,733 INFO  L218           NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2025-03-08 00:52:04,733 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2025-03-08 00:52:04,733 INFO  L396      AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2025-03-08 00:52:04,734 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2025-03-08 00:52:04,734 INFO  L85        PathProgramCache]: Analyzing trace with hash -123762022, now seen corresponding path program 1 times
[2025-03-08 00:52:04,734 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2025-03-08 00:52:04,734 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [938044921]
[2025-03-08 00:52:04,734 INFO  L97    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2025-03-08 00:52:04,734 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2025-03-08 00:52:04,744 INFO  L108    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes.
[2025-03-08 00:52:04,759 INFO  L111    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements.
[2025-03-08 00:52:04,762 INFO  L114    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s)
[2025-03-08 00:52:04,762 INFO  L115    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2025-03-08 00:52:04,954 INFO  L134       CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2025-03-08 00:52:04,954 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2025-03-08 00:52:04,954 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [938044921]
[2025-03-08 00:52:04,955 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [938044921] provided 0 perfect and 1 imperfect interpolant sequences
[2025-03-08 00:52:04,955 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [405740642]
[2025-03-08 00:52:04,955 INFO  L97    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2025-03-08 00:52:04,955 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2025-03-08 00:52:04,955 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2025-03-08 00:52:04,958 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)
[2025-03-08 00:52:04,959 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process
[2025-03-08 00:52:04,991 INFO  L108    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes.
[2025-03-08 00:52:05,003 INFO  L111    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements.
[2025-03-08 00:52:05,003 INFO  L114    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s)
[2025-03-08 00:52:05,003 INFO  L115    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2025-03-08 00:52:05,004 INFO  L256         TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 15 conjuncts are in the unsatisfiable core
[2025-03-08 00:52:05,012 INFO  L279         TraceCheckSpWp]: Computing forward predicates...
[2025-03-08 00:52:05,057 INFO  L134       CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2025-03-08 00:52:05,058 INFO  L312         TraceCheckSpWp]: Computing backward predicates...
[2025-03-08 00:52:05,093 INFO  L134       CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2025-03-08 00:52:05,093 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [405740642] provided 0 perfect and 2 imperfect interpolant sequences
[2025-03-08 00:52:05,094 INFO  L185   FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2025-03-08 00:52:05,094 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 7
[2025-03-08 00:52:05,094 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [100239394]
[2025-03-08 00:52:05,094 INFO  L85    oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2025-03-08 00:52:05,095 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2025-03-08 00:52:05,095 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2025-03-08 00:52:05,095 INFO  L144   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2025-03-08 00:52:05,095 INFO  L146   InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42
[2025-03-08 00:52:05,096 INFO  L87              Difference]: Start difference. First operand 11 states and 12 transitions. Second operand  has 7 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 7 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2025-03-08 00:52:05,131 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2025-03-08 00:52:05,132 INFO  L93              Difference]: Finished difference Result 16 states and 17 transitions.
[2025-03-08 00:52:05,132 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2025-03-08 00:52:05,132 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 7 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10
[2025-03-08 00:52:05,132 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2025-03-08 00:52:05,132 INFO  L225             Difference]: With dead ends: 16
[2025-03-08 00:52:05,132 INFO  L226             Difference]: Without dead ends: 12
[2025-03-08 00:52:05,133 INFO  L434           NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42
[2025-03-08 00:52:05,133 INFO  L435           NwaCegarLoop]: 7 mSDtfsCounter, 1 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2025-03-08 00:52:05,134 INFO  L436           NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 24 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2025-03-08 00:52:05,134 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 12 states.
[2025-03-08 00:52:05,135 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12.
[2025-03-08 00:52:05,135 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 12 states, 11 states have (on average 1.1818181818181819) internal successors, (13), 11 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2025-03-08 00:52:05,135 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 13 transitions.
[2025-03-08 00:52:05,135 INFO  L78                 Accepts]: Start accepts. Automaton has 12 states and 13 transitions. Word has length 10
[2025-03-08 00:52:05,135 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2025-03-08 00:52:05,136 INFO  L471      AbstractCegarLoop]: Abstraction has 12 states and 13 transitions.
[2025-03-08 00:52:05,136 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 7 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2025-03-08 00:52:05,136 INFO  L276                IsEmpty]: Start isEmpty. Operand 12 states and 13 transitions.
[2025-03-08 00:52:05,136 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 12
[2025-03-08 00:52:05,136 INFO  L210           NwaCegarLoop]: Found error trace
[2025-03-08 00:52:05,136 INFO  L218           NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2025-03-08 00:52:05,143 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0
[2025-03-08 00:52:05,341 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2025-03-08 00:52:05,341 INFO  L396      AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2025-03-08 00:52:05,342 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2025-03-08 00:52:05,342 INFO  L85        PathProgramCache]: Analyzing trace with hash 459329676, now seen corresponding path program 2 times
[2025-03-08 00:52:05,342 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2025-03-08 00:52:05,342 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [223635073]
[2025-03-08 00:52:05,342 INFO  L95    rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
[2025-03-08 00:52:05,342 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2025-03-08 00:52:05,350 INFO  L108    AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 11 statements into 2 equivalence classes.
[2025-03-08 00:52:05,372 INFO  L111    AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 11 of 11 statements.
[2025-03-08 00:52:05,374 INFO  L114    AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2025-03-08 00:52:05,374 INFO  L115    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2025-03-08 00:52:05,654 INFO  L134       CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2025-03-08 00:52:05,654 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2025-03-08 00:52:05,654 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [223635073]
[2025-03-08 00:52:05,654 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [223635073] provided 0 perfect and 1 imperfect interpolant sequences
[2025-03-08 00:52:05,654 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [483846430]
[2025-03-08 00:52:05,654 INFO  L95    rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
[2025-03-08 00:52:05,654 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2025-03-08 00:52:05,654 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2025-03-08 00:52:05,656 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)
[2025-03-08 00:52:05,658 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process
[2025-03-08 00:52:05,683 INFO  L108    AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 11 statements into 2 equivalence classes.
[2025-03-08 00:52:05,712 INFO  L111    AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 11 of 11 statements.
[2025-03-08 00:52:05,713 INFO  L114    AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2025-03-08 00:52:05,713 INFO  L115    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2025-03-08 00:52:05,714 INFO  L256         TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 36 conjuncts are in the unsatisfiable core
[2025-03-08 00:52:05,716 INFO  L279         TraceCheckSpWp]: Computing forward predicates...
[2025-03-08 00:52:05,955 INFO  L134       CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2025-03-08 00:52:05,957 INFO  L312         TraceCheckSpWp]: Computing backward predicates...
[2025-03-08 00:52:49,630 WARN  L286               SmtUtils]: Spent 28.13s on a formula simplification. DAG size of input: 117 DAG size of output: 114 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)
[2025-03-08 00:52:52,370 INFO  L134       CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2025-03-08 00:52:52,370 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [483846430] provided 0 perfect and 2 imperfect interpolant sequences
[2025-03-08 00:52:52,370 INFO  L185   FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2025-03-08 00:52:52,370 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6, 8] total 15
[2025-03-08 00:52:52,370 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [442540159]
[2025-03-08 00:52:52,370 INFO  L85    oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2025-03-08 00:52:52,371 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 15 states
[2025-03-08 00:52:52,371 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2025-03-08 00:52:52,374 INFO  L144   InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants.
[2025-03-08 00:52:52,374 INFO  L146   InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=154, Unknown=0, NotChecked=0, Total=210
[2025-03-08 00:52:52,375 INFO  L87              Difference]: Start difference. First operand 12 states and 13 transitions. Second operand  has 15 states, 15 states have (on average 1.6) internal successors, (24), 15 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2025-03-08 00:52:55,755 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2025-03-08 00:52:55,755 INFO  L93              Difference]: Finished difference Result 20 states and 21 transitions.
[2025-03-08 00:52:55,756 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. 
[2025-03-08 00:52:55,756 INFO  L78                 Accepts]: Start accepts. Automaton has  has 15 states, 15 states have (on average 1.6) internal successors, (24), 15 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11
[2025-03-08 00:52:55,756 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2025-03-08 00:52:55,756 INFO  L225             Difference]: With dead ends: 20
[2025-03-08 00:52:55,756 INFO  L226             Difference]: Without dead ends: 12
[2025-03-08 00:52:55,757 INFO  L434           NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 32.4s TimeCoverageRelationStatistics Valid=92, Invalid=250, Unknown=0, NotChecked=0, Total=342
[2025-03-08 00:52:55,758 INFO  L435           NwaCegarLoop]: 5 mSDtfsCounter, 10 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time
[2025-03-08 00:52:55,758 INFO  L436           NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 36 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time]
[2025-03-08 00:52:55,758 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 12 states.
[2025-03-08 00:52:55,759 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12.
[2025-03-08 00:52:55,759 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 12 states, 11 states have (on average 1.0909090909090908) internal successors, (12), 11 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2025-03-08 00:52:55,759 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions.
[2025-03-08 00:52:55,759 INFO  L78                 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 11
[2025-03-08 00:52:55,760 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2025-03-08 00:52:55,760 INFO  L471      AbstractCegarLoop]: Abstraction has 12 states and 12 transitions.
[2025-03-08 00:52:55,760 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 15 states, 15 states have (on average 1.6) internal successors, (24), 15 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2025-03-08 00:52:55,760 INFO  L276                IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions.
[2025-03-08 00:52:55,760 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 12
[2025-03-08 00:52:55,760 INFO  L210           NwaCegarLoop]: Found error trace
[2025-03-08 00:52:55,760 INFO  L218           NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2025-03-08 00:52:55,766 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0
[2025-03-08 00:52:55,960 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,SelfDestructingSolverStorable2
[2025-03-08 00:52:55,961 INFO  L396      AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2025-03-08 00:52:55,961 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2025-03-08 00:52:55,961 INFO  L85        PathProgramCache]: Analyzing trace with hash -1283480659, now seen corresponding path program 1 times
[2025-03-08 00:52:55,961 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2025-03-08 00:52:55,961 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [382202918]
[2025-03-08 00:52:55,961 INFO  L97    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2025-03-08 00:52:55,961 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2025-03-08 00:52:55,964 INFO  L108    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes.
[2025-03-08 00:52:55,990 INFO  L111    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements.
[2025-03-08 00:52:55,990 INFO  L114    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s)
[2025-03-08 00:52:55,990 INFO  L115    AnnotateAndAsserter]: Conjunction of SSA is unknown
[2025-03-08 00:52:55,994 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [339531442]
[2025-03-08 00:52:55,994 INFO  L97    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2025-03-08 00:52:55,994 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2025-03-08 00:52:55,994 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2025-03-08 00:52:55,996 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)
[2025-03-08 00:52:55,997 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process
[2025-03-08 00:52:56,018 INFO  L108    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes.
[2025-03-08 00:53:00,201 INFO  L111    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements.
[2025-03-08 00:53:00,202 INFO  L114    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s)
[2025-03-08 00:53:00,202 INFO  L115    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2025-03-08 00:53:00,204 INFO  L256         TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 41 conjuncts are in the unsatisfiable core
[2025-03-08 00:53:00,206 INFO  L279         TraceCheckSpWp]: Computing forward predicates...
[2025-03-08 00:53:11,429 INFO  L134       CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2025-03-08 00:53:11,429 INFO  L312         TraceCheckSpWp]: Computing backward predicates...