./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.needham.3.prop2-back-serstep.c --full-output --architecture 64bit


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


Checking for ERROR reachability
Using default analysis
Version 8fc3dc66
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/hardware-verification-bv/btor2c-lazyMod.needham.3.prop2-back-serstep.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-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 64bit --witnessprinter.graph.data.programhash 3e97a263844c27cfbc90b2c6c29bfa9cf44094c2b077d629188394726afbad7a
--- Real Ultimate output ---
This is Ultimate 0.3.0-?-8fc3dc6-m
[2025-03-16 22:12:56,043 INFO  L188        SettingsManager]: Resetting all preferences to default values...
[2025-03-16 22:12:56,085 INFO  L114        SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf
[2025-03-16 22:12:56,091 WARN  L101        SettingsManager]: Preference file contains the following unknown settings:
[2025-03-16 22:12:56,091 WARN  L103        SettingsManager]:   * de.uni_freiburg.informatik.ultimate.core.Log level for class
[2025-03-16 22:12:56,113 INFO  L130        SettingsManager]: Preferences different from defaults after loading the file:
[2025-03-16 22:12:56,114 INFO  L151        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2025-03-16 22:12:56,114 INFO  L153        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2025-03-16 22:12:56,114 INFO  L151        SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults:
[2025-03-16 22:12:56,114 INFO  L153        SettingsManager]:  * Use memory slicer=true
[2025-03-16 22:12:56,114 INFO  L151        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2025-03-16 22:12:56,114 INFO  L153        SettingsManager]:  * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2025-03-16 22:12:56,114 INFO  L151        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2025-03-16 22:12:56,115 INFO  L153        SettingsManager]:  * Create parallel compositions if possible=false
[2025-03-16 22:12:56,116 INFO  L153        SettingsManager]:  * Use SBE=true
[2025-03-16 22:12:56,116 INFO  L151        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2025-03-16 22:12:56,116 INFO  L153        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2025-03-16 22:12:56,117 INFO  L153        SettingsManager]:  * Overapproximate operations on floating types=true
[2025-03-16 22:12:56,117 INFO  L153        SettingsManager]:  * Check division by zero=IGNORE
[2025-03-16 22:12:56,117 INFO  L153        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2025-03-16 22:12:56,117 INFO  L153        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2025-03-16 22:12:56,117 INFO  L153        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2025-03-16 22:12:56,117 INFO  L153        SettingsManager]:  * Check if freed pointer was valid=false
[2025-03-16 22:12:56,117 INFO  L153        SettingsManager]:  * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR
[2025-03-16 22:12:56,117 INFO  L153        SettingsManager]:  * Use constant arrays=true
[2025-03-16 22:12:56,117 INFO  L151        SettingsManager]: Preferences of IcfgBuilder differ from their defaults:
[2025-03-16 22:12:56,117 INFO  L153        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2025-03-16 22:12:56,117 INFO  L153        SettingsManager]:  * Only consider context switches at boundaries of atomic blocks=true
[2025-03-16 22:12:56,117 INFO  L153        SettingsManager]:  * SMT solver=External_DefaultMode
[2025-03-16 22:12:56,117 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2025-03-16 22:12:56,118 INFO  L151        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2025-03-16 22:12:56,118 INFO  L153        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2025-03-16 22:12:56,118 INFO  L153        SettingsManager]:  * Compute procedure contracts=false
[2025-03-16 22:12:56,118 INFO  L153        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopHeads
[2025-03-16 22:12:56,118 INFO  L153        SettingsManager]:  * Trace refinement strategy=CAMEL
[2025-03-16 22:12:56,118 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2025-03-16 22:12:56,118 INFO  L153        SettingsManager]:  * Apply one-shot large block encoding in concurrent analysis=false
[2025-03-16 22:12:56,118 INFO  L153        SettingsManager]:  * Automaton type used in concurrency analysis=PETRI_NET
[2025-03-16 22:12:56,118 INFO  L153        SettingsManager]:  * Order on configurations for Petri net unfoldings=DBO
[2025-03-16 22:12:56,118 INFO  L153        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2025-03-16 22:12:56,119 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 -> 64bit
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3e97a263844c27cfbc90b2c6c29bfa9cf44094c2b077d629188394726afbad7a
[2025-03-16 22:12:56,357 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2025-03-16 22:12:56,364 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2025-03-16 22:12:56,366 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2025-03-16 22:12:56,368 INFO  L270        PluginConnector]: Initializing CDTParser...
[2025-03-16 22:12:56,368 INFO  L274        PluginConnector]: CDTParser initialized
[2025-03-16 22:12:56,369 INFO  L431   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.needham.3.prop2-back-serstep.c
[2025-03-16 22:12:57,539 INFO  L533              CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b4387fce7/72d52c5730bd42d3ba4d473cb719552e/FLAG979a3899f
[2025-03-16 22:12:57,949 INFO  L384              CDTParser]: Found 1 translation units.
[2025-03-16 22:12:57,950 INFO  L180              CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.needham.3.prop2-back-serstep.c
[2025-03-16 22:12:57,980 INFO  L427              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b4387fce7/72d52c5730bd42d3ba4d473cb719552e/FLAG979a3899f
[2025-03-16 22:12:57,994 INFO  L435              CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b4387fce7/72d52c5730bd42d3ba4d473cb719552e
[2025-03-16 22:12:57,996 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2025-03-16 22:12:57,997 INFO  L133        ToolchainWalker]: Walking toolchain with 6 elements.
[2025-03-16 22:12:57,998 INFO  L112        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2025-03-16 22:12:57,998 INFO  L270        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2025-03-16 22:12:58,002 INFO  L274        PluginConnector]: CACSL2BoogieTranslator initialized
[2025-03-16 22:12:58,002 INFO  L184        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.03 10:12:57" (1/1) ...
[2025-03-16 22:12:58,003 INFO  L204        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7496c2c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 10:12:58, skipping insertion in model container
[2025-03-16 22:12:58,003 INFO  L184        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.03 10:12:57" (1/1) ...
[2025-03-16 22:12:58,071 INFO  L175         MainTranslator]: Built tables and reachable declarations
[2025-03-16 22:12:58,247 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/hardware-verification-bv/btor2c-lazyMod.needham.3.prop2-back-serstep.c[1175,1188]
[2025-03-16 22:12:58,744 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2025-03-16 22:12:58,750 INFO  L200         MainTranslator]: Completed pre-run
[2025-03-16 22:12:58,759 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/hardware-verification-bv/btor2c-lazyMod.needham.3.prop2-back-serstep.c[1175,1188]
[2025-03-16 22:12:59,162 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2025-03-16 22:12:59,173 INFO  L204         MainTranslator]: Completed translation
[2025-03-16 22:12:59,174 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 10:12:59 WrapperNode
[2025-03-16 22:12:59,175 INFO  L131        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2025-03-16 22:12:59,176 INFO  L112        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2025-03-16 22:12:59,176 INFO  L270        PluginConnector]: Initializing Boogie Procedure Inliner...
[2025-03-16 22:12:59,176 INFO  L274        PluginConnector]: Boogie Procedure Inliner initialized
[2025-03-16 22:12:59,180 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 10:12:59" (1/1) ...
[2025-03-16 22:12:59,289 INFO  L184        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 10:12:59" (1/1) ...
[2025-03-16 22:13:00,921 INFO  L138                Inliner]: procedures = 17, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 21657
[2025-03-16 22:13:00,922 INFO  L131        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2025-03-16 22:13:00,923 INFO  L112        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2025-03-16 22:13:00,923 INFO  L270        PluginConnector]: Initializing Boogie Preprocessor...
[2025-03-16 22:13:00,923 INFO  L274        PluginConnector]: Boogie Preprocessor initialized
[2025-03-16 22:13:00,929 INFO  L184        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 10:12:59" (1/1) ...
[2025-03-16 22:13:00,929 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 10:12:59" (1/1) ...
[2025-03-16 22:13:01,401 INFO  L184        PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 10:12:59" (1/1) ...
[2025-03-16 22:13:01,621 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].
[2025-03-16 22:13:01,621 INFO  L184        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 10:12:59" (1/1) ...
[2025-03-16 22:13:01,622 INFO  L184        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 10:12:59" (1/1) ...
[2025-03-16 22:13:01,985 INFO  L184        PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 10:12:59" (1/1) ...
[2025-03-16 22:13:02,038 INFO  L184        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 10:12:59" (1/1) ...
[2025-03-16 22:13:02,111 INFO  L184        PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 10:12:59" (1/1) ...
[2025-03-16 22:13:02,198 INFO  L184        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 10:12:59" (1/1) ...
[2025-03-16 22:13:02,422 INFO  L131        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2025-03-16 22:13:02,423 INFO  L112        PluginConnector]: ------------------------IcfgBuilder----------------------------
[2025-03-16 22:13:02,423 INFO  L270        PluginConnector]: Initializing IcfgBuilder...
[2025-03-16 22:13:02,423 INFO  L274        PluginConnector]: IcfgBuilder initialized
[2025-03-16 22:13:02,424 INFO  L184        PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 10:12:59" (1/1) ...
[2025-03-16 22:13:02,427 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2025-03-16 22:13:02,436 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2025-03-16 22:13:02,447 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)
[2025-03-16 22:13:02,457 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
[2025-03-16 22:13:02,473 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2025-03-16 22:13:02,473 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int#0
[2025-03-16 22:13:02,473 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2025-03-16 22:13:02,474 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2025-03-16 22:13:03,225 INFO  L256             CfgBuilder]: Building ICFG
[2025-03-16 22:13:03,227 INFO  L286             CfgBuilder]: Building CFG for each procedure with an implementation
[2025-03-16 22:14:07,123 INFO  L?                        ?]: Removed 11501 outVars from TransFormulas that were not future-live.
[2025-03-16 22:14:07,123 INFO  L307             CfgBuilder]: Performing block encoding
[2025-03-16 22:14:07,695 INFO  L331             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2025-03-16 22:14:07,696 INFO  L336             CfgBuilder]: Removed 13 assume(true) statements.
[2025-03-16 22:14:07,696 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.03 10:14:07 BoogieIcfgContainer
[2025-03-16 22:14:07,696 INFO  L131        PluginConnector]: ------------------------ END IcfgBuilder----------------------------
[2025-03-16 22:14:07,698 INFO  L112        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2025-03-16 22:14:07,698 INFO  L270        PluginConnector]: Initializing TraceAbstraction...
[2025-03-16 22:14:07,701 INFO  L274        PluginConnector]: TraceAbstraction initialized
[2025-03-16 22:14:07,702 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.03 10:12:57" (1/3) ...
[2025-03-16 22:14:07,702 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68335589 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.03 10:14:07, skipping insertion in model container
[2025-03-16 22:14:07,703 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 10:12:59" (2/3) ...
[2025-03-16 22:14:07,703 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68335589 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.03 10:14:07, skipping insertion in model container
[2025-03-16 22:14:07,703 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.03 10:14:07" (3/3) ...
[2025-03-16 22:14:07,704 INFO  L128   eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.needham.3.prop2-back-serstep.c
[2025-03-16 22:14:07,715 INFO  L216   ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2025-03-16 22:14:07,717 INFO  L151   ceAbstractionStarter]: Applying trace abstraction to ICFG btor2c-lazyMod.needham.3.prop2-back-serstep.c that has 1 procedures, 7771 locations, 1 initial locations, 1 loop locations, and 1 error locations.
[2025-03-16 22:14:07,869 INFO  L332      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2025-03-16 22:14:07,878 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;@117dbf9a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2025-03-16 22:14:07,879 INFO  L334      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2025-03-16 22:14:07,898 INFO  L276                IsEmpty]: Start isEmpty. Operand  has 7771 states, 7769 states have (on average 1.5039258591839362) internal successors, (11684), 7770 states have internal predecessors, (11684), 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)
[2025-03-16 22:14:07,920 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 611
[2025-03-16 22:14:07,920 INFO  L210           NwaCegarLoop]: Found error trace
[2025-03-16 22:14:07,921 INFO  L218           NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2025-03-16 22:14:07,921 INFO  L396      AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2025-03-16 22:14:07,925 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2025-03-16 22:14:07,929 INFO  L85        PathProgramCache]: Analyzing trace with hash 968029220, now seen corresponding path program 1 times
[2025-03-16 22:14:07,934 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2025-03-16 22:14:07,934 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1576861345]
[2025-03-16 22:14:07,934 INFO  L97    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2025-03-16 22:14:07,935 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2025-03-16 22:14:08,098 INFO  L108    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 610 statements into 1 equivalence classes.
[2025-03-16 22:14:08,490 INFO  L111    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 610 of 610 statements.
[2025-03-16 22:14:08,490 INFO  L114    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s)
[2025-03-16 22:14:08,490 INFO  L115    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2025-03-16 22:14:10,158 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2025-03-16 22:14:10,159 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2025-03-16 22:14:10,160 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1576861345]
[2025-03-16 22:14:10,161 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1576861345] provided 1 perfect and 0 imperfect interpolant sequences
[2025-03-16 22:14:10,161 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2025-03-16 22:14:10,161 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2025-03-16 22:14:10,163 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1162180256]
[2025-03-16 22:14:10,163 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2025-03-16 22:14:10,167 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2025-03-16 22:14:10,168 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2025-03-16 22:14:10,185 INFO  L144   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2025-03-16 22:14:10,186 INFO  L146   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2025-03-16 22:14:10,202 INFO  L87              Difference]: Start difference. First operand  has 7771 states, 7769 states have (on average 1.5039258591839362) internal successors, (11684), 7770 states have internal predecessors, (11684), 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 4 states, 4 states have (on average 152.5) internal successors, (610), 4 states have internal predecessors, (610), 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)
[2025-03-16 22:14:13,418 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2025-03-16 22:14:13,418 INFO  L93              Difference]: Finished difference Result 15301 states and 23009 transitions.
[2025-03-16 22:14:13,420 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2025-03-16 22:14:13,421 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 152.5) internal successors, (610), 4 states have internal predecessors, (610), 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 610
[2025-03-16 22:14:13,424 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2025-03-16 22:14:13,460 INFO  L225             Difference]: With dead ends: 15301
[2025-03-16 22:14:13,461 INFO  L226             Difference]: Without dead ends: 7771
[2025-03-16 22:14:13,476 INFO  L434           NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2025-03-16 22:14:13,477 INFO  L435           NwaCegarLoop]: 9747 mSDtfsCounter, 0 mSDsluCounter, 19489 mSDsCounter, 0 mSdLazyCounter, 5806 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 29236 SdHoareTripleChecker+Invalid, 5806 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5806 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time
[2025-03-16 22:14:13,478 INFO  L436           NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 29236 Invalid, 5806 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 5806 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time]
[2025-03-16 22:14:13,500 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 7771 states.
[2025-03-16 22:14:13,633 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 7771 to 7771.
[2025-03-16 22:14:13,646 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7771 states, 7770 states have (on average 1.5036036036036036) internal successors, (11683), 7770 states have internal predecessors, (11683), 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)
[2025-03-16 22:14:13,667 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7771 states to 7771 states and 11683 transitions.
[2025-03-16 22:14:13,669 INFO  L78                 Accepts]: Start accepts. Automaton has 7771 states and 11683 transitions. Word has length 610
[2025-03-16 22:14:13,670 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2025-03-16 22:14:13,670 INFO  L471      AbstractCegarLoop]: Abstraction has 7771 states and 11683 transitions.
[2025-03-16 22:14:13,671 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 152.5) internal successors, (610), 4 states have internal predecessors, (610), 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)
[2025-03-16 22:14:13,671 INFO  L276                IsEmpty]: Start isEmpty. Operand 7771 states and 11683 transitions.
[2025-03-16 22:14:13,678 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 612
[2025-03-16 22:14:13,678 INFO  L210           NwaCegarLoop]: Found error trace
[2025-03-16 22:14:13,679 INFO  L218           NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2025-03-16 22:14:13,679 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2025-03-16 22:14:13,679 INFO  L396      AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2025-03-16 22:14:13,680 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2025-03-16 22:14:13,680 INFO  L85        PathProgramCache]: Analyzing trace with hash -51174623, now seen corresponding path program 1 times
[2025-03-16 22:14:13,680 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2025-03-16 22:14:13,680 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1535607092]
[2025-03-16 22:14:13,680 INFO  L97    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2025-03-16 22:14:13,681 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2025-03-16 22:14:13,767 INFO  L108    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 611 statements into 1 equivalence classes.
[2025-03-16 22:14:13,862 INFO  L111    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 611 of 611 statements.
[2025-03-16 22:14:13,862 INFO  L114    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s)
[2025-03-16 22:14:13,862 INFO  L115    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2025-03-16 22:14:14,640 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2025-03-16 22:14:14,640 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2025-03-16 22:14:14,640 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1535607092]
[2025-03-16 22:14:14,640 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1535607092] provided 1 perfect and 0 imperfect interpolant sequences
[2025-03-16 22:14:14,640 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2025-03-16 22:14:14,641 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2025-03-16 22:14:14,641 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [234407871]
[2025-03-16 22:14:14,641 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2025-03-16 22:14:14,642 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2025-03-16 22:14:14,642 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2025-03-16 22:14:14,642 INFO  L144   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2025-03-16 22:14:14,643 INFO  L146   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2025-03-16 22:14:14,643 INFO  L87              Difference]: Start difference. First operand 7771 states and 11683 transitions. Second operand  has 4 states, 4 states have (on average 152.75) internal successors, (611), 4 states have internal predecessors, (611), 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)
[2025-03-16 22:14:17,406 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2025-03-16 22:14:17,407 INFO  L93              Difference]: Finished difference Result 15303 states and 23008 transitions.
[2025-03-16 22:14:17,407 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2025-03-16 22:14:17,407 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 152.75) internal successors, (611), 4 states have internal predecessors, (611), 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 611
[2025-03-16 22:14:17,408 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2025-03-16 22:14:17,428 INFO  L225             Difference]: With dead ends: 15303
[2025-03-16 22:14:17,428 INFO  L226             Difference]: Without dead ends: 7773
[2025-03-16 22:14:17,434 INFO  L434           NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2025-03-16 22:14:17,435 INFO  L435           NwaCegarLoop]: 9747 mSDtfsCounter, 0 mSDsluCounter, 19486 mSDsCounter, 0 mSdLazyCounter, 5809 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 29233 SdHoareTripleChecker+Invalid, 5809 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5809 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time
[2025-03-16 22:14:17,436 INFO  L436           NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 29233 Invalid, 5809 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [0 Valid, 5809 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time]
[2025-03-16 22:14:17,445 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 7773 states.
[2025-03-16 22:14:17,528 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 7773 to 7773.
[2025-03-16 22:14:17,541 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7773 states, 7772 states have (on average 1.5034740092640246) internal successors, (11685), 7772 states have internal predecessors, (11685), 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)
[2025-03-16 22:14:17,555 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7773 states to 7773 states and 11685 transitions.
[2025-03-16 22:14:17,556 INFO  L78                 Accepts]: Start accepts. Automaton has 7773 states and 11685 transitions. Word has length 611
[2025-03-16 22:14:17,556 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2025-03-16 22:14:17,556 INFO  L471      AbstractCegarLoop]: Abstraction has 7773 states and 11685 transitions.
[2025-03-16 22:14:17,557 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 152.75) internal successors, (611), 4 states have internal predecessors, (611), 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)
[2025-03-16 22:14:17,557 INFO  L276                IsEmpty]: Start isEmpty. Operand 7773 states and 11685 transitions.
[2025-03-16 22:14:17,560 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 613
[2025-03-16 22:14:17,560 INFO  L210           NwaCegarLoop]: Found error trace
[2025-03-16 22:14:17,561 INFO  L218           NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2025-03-16 22:14:17,561 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2025-03-16 22:14:17,561 INFO  L396      AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2025-03-16 22:14:17,562 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2025-03-16 22:14:17,562 INFO  L85        PathProgramCache]: Analyzing trace with hash 345107391, now seen corresponding path program 1 times
[2025-03-16 22:14:17,562 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2025-03-16 22:14:17,562 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [822957931]
[2025-03-16 22:14:17,562 INFO  L97    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2025-03-16 22:14:17,563 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2025-03-16 22:14:17,654 INFO  L108    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 612 statements into 1 equivalence classes.
[2025-03-16 22:14:17,750 INFO  L111    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 612 of 612 statements.
[2025-03-16 22:14:17,750 INFO  L114    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s)
[2025-03-16 22:14:17,750 INFO  L115    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2025-03-16 22:14:19,104 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2025-03-16 22:14:19,105 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2025-03-16 22:14:19,105 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [822957931]
[2025-03-16 22:14:19,105 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [822957931] provided 1 perfect and 0 imperfect interpolant sequences
[2025-03-16 22:14:19,105 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2025-03-16 22:14:19,105 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2025-03-16 22:14:19,105 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [600923983]
[2025-03-16 22:14:19,105 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2025-03-16 22:14:19,106 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2025-03-16 22:14:19,106 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2025-03-16 22:14:19,106 INFO  L144   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2025-03-16 22:14:19,106 INFO  L146   InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30
[2025-03-16 22:14:19,107 INFO  L87              Difference]: Start difference. First operand 7773 states and 11685 transitions. Second operand  has 6 states, 6 states have (on average 102.0) internal successors, (612), 5 states have internal predecessors, (612), 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)
[2025-03-16 22:14:23,473 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2025-03-16 22:14:23,474 INFO  L93              Difference]: Finished difference Result 22823 states and 34314 transitions.
[2025-03-16 22:14:23,475 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2025-03-16 22:14:23,475 INFO  L78                 Accepts]: Start accepts. Automaton has  has 6 states, 6 states have (on average 102.0) internal successors, (612), 5 states have internal predecessors, (612), 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 612
[2025-03-16 22:14:23,476 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2025-03-16 22:14:23,510 INFO  L225             Difference]: With dead ends: 22823
[2025-03-16 22:14:23,510 INFO  L226             Difference]: Without dead ends: 15291
[2025-03-16 22:14:23,522 INFO  L434           NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42
[2025-03-16 22:14:23,523 INFO  L435           NwaCegarLoop]: 9743 mSDtfsCounter, 21838 mSDsluCounter, 29099 mSDsCounter, 0 mSdLazyCounter, 7731 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21838 SdHoareTripleChecker+Valid, 38842 SdHoareTripleChecker+Invalid, 7731 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7731 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time
[2025-03-16 22:14:23,523 INFO  L436           NwaCegarLoop]: SdHoareTripleChecker [21838 Valid, 38842 Invalid, 7731 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 7731 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time]
[2025-03-16 22:14:23,539 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 15291 states.
[2025-03-16 22:14:23,659 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 15291 to 8739.
[2025-03-16 22:14:23,670 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 8739 states, 8738 states have (on average 1.5029755092698558) internal successors, (13133), 8738 states have internal predecessors, (13133), 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)
[2025-03-16 22:14:23,680 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 8739 states to 8739 states and 13133 transitions.
[2025-03-16 22:14:23,680 INFO  L78                 Accepts]: Start accepts. Automaton has 8739 states and 13133 transitions. Word has length 612
[2025-03-16 22:14:23,681 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2025-03-16 22:14:23,681 INFO  L471      AbstractCegarLoop]: Abstraction has 8739 states and 13133 transitions.
[2025-03-16 22:14:23,681 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 6 states, 6 states have (on average 102.0) internal successors, (612), 5 states have internal predecessors, (612), 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)
[2025-03-16 22:14:23,682 INFO  L276                IsEmpty]: Start isEmpty. Operand 8739 states and 13133 transitions.
[2025-03-16 22:14:23,756 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 4260
[2025-03-16 22:14:23,757 INFO  L210           NwaCegarLoop]: Found error trace
[2025-03-16 22:14:23,759 INFO  L218           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2025-03-16 22:14:23,759 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2025-03-16 22:14:23,759 INFO  L396      AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2025-03-16 22:14:23,761 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2025-03-16 22:14:23,761 INFO  L85        PathProgramCache]: Analyzing trace with hash 439906158, now seen corresponding path program 1 times
[2025-03-16 22:14:23,762 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2025-03-16 22:14:23,762 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1166664162]
[2025-03-16 22:14:23,762 INFO  L97    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2025-03-16 22:14:23,762 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2025-03-16 22:14:24,140 INFO  L108    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4259 statements into 1 equivalence classes.