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


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


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/hardware-verification-bv/btor2c-lazyMod.vis_arrays_palu.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 7bfb32b49701ea1484553c69a9c6c976094bd0d4ca4d5ea9d4d30cdc2f2571dd
--- Real Ultimate output ---
This is Ultimate 0.3.0-?-e2fb8be-m
[2025-03-08 09:42:05,412 INFO  L188        SettingsManager]: Resetting all preferences to default values...
[2025-03-08 09:42:05,465 INFO  L114        SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf
[2025-03-08 09:42:05,469 WARN  L101        SettingsManager]: Preference file contains the following unknown settings:
[2025-03-08 09:42:05,469 WARN  L103        SettingsManager]:   * de.uni_freiburg.informatik.ultimate.core.Log level for class
[2025-03-08 09:42:05,486 INFO  L130        SettingsManager]: Preferences different from defaults after loading the file:
[2025-03-08 09:42:05,486 INFO  L151        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2025-03-08 09:42:05,486 INFO  L153        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2025-03-08 09:42:05,487 INFO  L151        SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults:
[2025-03-08 09:42:05,488 INFO  L153        SettingsManager]:  * Use memory slicer=true
[2025-03-08 09:42:05,488 INFO  L151        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2025-03-08 09:42:05,488 INFO  L153        SettingsManager]:  * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2025-03-08 09:42:05,489 INFO  L151        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2025-03-08 09:42:05,489 INFO  L153        SettingsManager]:  * Create parallel compositions if possible=false
[2025-03-08 09:42:05,489 INFO  L153        SettingsManager]:  * Use SBE=true
[2025-03-08 09:42:05,489 INFO  L151        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2025-03-08 09:42:05,490 INFO  L153        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2025-03-08 09:42:05,490 INFO  L153        SettingsManager]:  * Overapproximate operations on floating types=true
[2025-03-08 09:42:05,490 INFO  L153        SettingsManager]:  * Check division by zero=IGNORE
[2025-03-08 09:42:05,490 INFO  L153        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2025-03-08 09:42:05,490 INFO  L153        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2025-03-08 09:42:05,490 INFO  L153        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2025-03-08 09:42:05,490 INFO  L153        SettingsManager]:  * Check if freed pointer was valid=false
[2025-03-08 09:42:05,490 INFO  L153        SettingsManager]:  * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR
[2025-03-08 09:42:05,490 INFO  L153        SettingsManager]:  * Use constant arrays=true
[2025-03-08 09:42:05,490 INFO  L151        SettingsManager]: Preferences of IcfgBuilder differ from their defaults:
[2025-03-08 09:42:05,490 INFO  L153        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2025-03-08 09:42:05,490 INFO  L153        SettingsManager]:  * Only consider context switches at boundaries of atomic blocks=true
[2025-03-08 09:42:05,490 INFO  L153        SettingsManager]:  * SMT solver=External_DefaultMode
[2025-03-08 09:42:05,490 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2025-03-08 09:42:05,491 INFO  L151        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2025-03-08 09:42:05,491 INFO  L153        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2025-03-08 09:42:05,491 INFO  L153        SettingsManager]:  * Compute procedure contracts=false
[2025-03-08 09:42:05,491 INFO  L153        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopHeads
[2025-03-08 09:42:05,491 INFO  L153        SettingsManager]:  * Trace refinement strategy=CAMEL
[2025-03-08 09:42:05,491 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2025-03-08 09:42:05,491 INFO  L153        SettingsManager]:  * Apply one-shot large block encoding in concurrent analysis=false
[2025-03-08 09:42:05,491 INFO  L153        SettingsManager]:  * Automaton type used in concurrency analysis=PETRI_NET
[2025-03-08 09:42:05,491 INFO  L153        SettingsManager]:  * Order on configurations for Petri net unfoldings=DBO
[2025-03-08 09:42:05,491 INFO  L153        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2025-03-08 09:42:05,491 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 -> 7bfb32b49701ea1484553c69a9c6c976094bd0d4ca4d5ea9d4d30cdc2f2571dd
[2025-03-08 09:42:05,714 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2025-03-08 09:42:05,723 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2025-03-08 09:42:05,725 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2025-03-08 09:42:05,726 INFO  L270        PluginConnector]: Initializing CDTParser...
[2025-03-08 09:42:05,727 INFO  L274        PluginConnector]: CDTParser initialized
[2025-03-08 09:42:05,728 INFO  L431   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_arrays_palu.c
[2025-03-08 09:42:06,861 INFO  L533              CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/15e213fab/f19804b84dc341da81521729375cf475/FLAGf0bd9762f
[2025-03-08 09:42:07,165 INFO  L384              CDTParser]: Found 1 translation units.
[2025-03-08 09:42:07,167 INFO  L180              CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_arrays_palu.c
[2025-03-08 09:42:07,178 INFO  L427              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/15e213fab/f19804b84dc341da81521729375cf475/FLAGf0bd9762f
[2025-03-08 09:42:07,426 INFO  L435              CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/15e213fab/f19804b84dc341da81521729375cf475
[2025-03-08 09:42:07,428 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2025-03-08 09:42:07,429 INFO  L133        ToolchainWalker]: Walking toolchain with 6 elements.
[2025-03-08 09:42:07,430 INFO  L112        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2025-03-08 09:42:07,430 INFO  L270        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2025-03-08 09:42:07,433 INFO  L274        PluginConnector]: CACSL2BoogieTranslator initialized
[2025-03-08 09:42:07,434 INFO  L184        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.03 09:42:07" (1/1) ...
[2025-03-08 09:42:07,434 INFO  L204        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@48531b72 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 09:42:07, skipping insertion in model container
[2025-03-08 09:42:07,435 INFO  L184        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.03 09:42:07" (1/1) ...
[2025-03-08 09:42:07,457 INFO  L175         MainTranslator]: Built tables and reachable declarations
[2025-03-08 09:42:07,587 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.vis_arrays_palu.c[1255,1268]
[2025-03-08 09:42:07,723 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2025-03-08 09:42:07,731 INFO  L200         MainTranslator]: Completed pre-run
[2025-03-08 09:42:07,738 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.vis_arrays_palu.c[1255,1268]
[2025-03-08 09:42:07,814 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2025-03-08 09:42:07,826 INFO  L204         MainTranslator]: Completed translation
[2025-03-08 09:42:07,827 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 09:42:07 WrapperNode
[2025-03-08 09:42:07,827 INFO  L131        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2025-03-08 09:42:07,828 INFO  L112        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2025-03-08 09:42:07,828 INFO  L270        PluginConnector]: Initializing Boogie Procedure Inliner...
[2025-03-08 09:42:07,828 INFO  L274        PluginConnector]: Boogie Procedure Inliner initialized
[2025-03-08 09:42:07,832 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 09:42:07" (1/1) ...
[2025-03-08 09:42:07,851 INFO  L184        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 09:42:07" (1/1) ...
[2025-03-08 09:42:07,967 INFO  L138                Inliner]: procedures = 17, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1243
[2025-03-08 09:42:07,968 INFO  L131        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2025-03-08 09:42:07,968 INFO  L112        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2025-03-08 09:42:07,968 INFO  L270        PluginConnector]: Initializing Boogie Preprocessor...
[2025-03-08 09:42:07,968 INFO  L274        PluginConnector]: Boogie Preprocessor initialized
[2025-03-08 09:42:07,975 INFO  L184        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 09:42:07" (1/1) ...
[2025-03-08 09:42:07,976 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 09:42:07" (1/1) ...
[2025-03-08 09:42:08,010 INFO  L184        PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 09:42:07" (1/1) ...
[2025-03-08 09:42:08,062 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].
[2025-03-08 09:42:08,062 INFO  L184        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 09:42:07" (1/1) ...
[2025-03-08 09:42:08,062 INFO  L184        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 09:42:07" (1/1) ...
[2025-03-08 09:42:08,106 INFO  L184        PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 09:42:07" (1/1) ...
[2025-03-08 09:42:08,116 INFO  L184        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 09:42:07" (1/1) ...
[2025-03-08 09:42:08,129 INFO  L184        PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 09:42:07" (1/1) ...
[2025-03-08 09:42:08,139 INFO  L184        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 09:42:07" (1/1) ...
[2025-03-08 09:42:08,206 INFO  L131        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2025-03-08 09:42:08,207 INFO  L112        PluginConnector]: ------------------------IcfgBuilder----------------------------
[2025-03-08 09:42:08,207 INFO  L270        PluginConnector]: Initializing IcfgBuilder...
[2025-03-08 09:42:08,208 INFO  L274        PluginConnector]: IcfgBuilder initialized
[2025-03-08 09:42:08,209 INFO  L184        PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 09:42:07" (1/1) ...
[2025-03-08 09:42:08,213 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2025-03-08 09:42:08,225 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2025-03-08 09:42:08,238 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 09:42:08,240 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 09:42:08,258 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2025-03-08 09:42:08,258 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int#0
[2025-03-08 09:42:08,258 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2025-03-08 09:42:08,258 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2025-03-08 09:42:08,407 INFO  L256             CfgBuilder]: Building ICFG
[2025-03-08 09:42:08,409 INFO  L286             CfgBuilder]: Building CFG for each procedure with an implementation
[2025-03-08 09:42:09,540 INFO  L?                        ?]: Removed 682 outVars from TransFormulas that were not future-live.
[2025-03-08 09:42:09,540 INFO  L307             CfgBuilder]: Performing block encoding
[2025-03-08 09:42:09,611 INFO  L331             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2025-03-08 09:42:09,611 INFO  L336             CfgBuilder]: Removed 0 assume(true) statements.
[2025-03-08 09:42:09,611 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.03 09:42:09 BoogieIcfgContainer
[2025-03-08 09:42:09,611 INFO  L131        PluginConnector]: ------------------------ END IcfgBuilder----------------------------
[2025-03-08 09:42:09,615 INFO  L112        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2025-03-08 09:42:09,616 INFO  L270        PluginConnector]: Initializing TraceAbstraction...
[2025-03-08 09:42:09,619 INFO  L274        PluginConnector]: TraceAbstraction initialized
[2025-03-08 09:42:09,620 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.03 09:42:07" (1/3) ...
[2025-03-08 09:42:09,620 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e8a3062 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.03 09:42:09, skipping insertion in model container
[2025-03-08 09:42:09,620 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 09:42:07" (2/3) ...
[2025-03-08 09:42:09,621 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e8a3062 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.03 09:42:09, skipping insertion in model container
[2025-03-08 09:42:09,621 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.03 09:42:09" (3/3) ...
[2025-03-08 09:42:09,622 INFO  L128   eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.vis_arrays_palu.c
[2025-03-08 09:42:09,634 INFO  L216   ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2025-03-08 09:42:09,635 INFO  L151   ceAbstractionStarter]: Applying trace abstraction to ICFG btor2c-lazyMod.vis_arrays_palu.c that has 1 procedures, 362 locations, 1 initial locations, 1 loop locations, and 1 error locations.
[2025-03-08 09:42:09,691 INFO  L332      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2025-03-08 09:42:09,705 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;@f59a943, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2025-03-08 09:42:09,705 INFO  L334      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2025-03-08 09:42:09,710 INFO  L276                IsEmpty]: Start isEmpty. Operand  has 362 states, 360 states have (on average 1.4972222222222222) internal successors, (539), 361 states have internal predecessors, (539), 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 09:42:09,716 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 52
[2025-03-08 09:42:09,717 INFO  L210           NwaCegarLoop]: Found error trace
[2025-03-08 09:42:09,717 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]
[2025-03-08 09:42:09,718 INFO  L396      AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2025-03-08 09:42:09,722 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2025-03-08 09:42:09,722 INFO  L85        PathProgramCache]: Analyzing trace with hash -1611351578, now seen corresponding path program 1 times
[2025-03-08 09:42:09,728 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2025-03-08 09:42:09,729 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [240441753]
[2025-03-08 09:42:09,730 INFO  L97    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2025-03-08 09:42:09,731 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2025-03-08 09:42:09,816 INFO  L108    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 51 statements into 1 equivalence classes.
[2025-03-08 09:42:10,029 INFO  L111    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 51 of 51 statements.
[2025-03-08 09:42:10,030 INFO  L114    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s)
[2025-03-08 09:42:10,030 INFO  L115    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2025-03-08 09:42:10,610 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 09:42:10,611 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2025-03-08 09:42:10,611 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [240441753]
[2025-03-08 09:42:10,612 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [240441753] provided 1 perfect and 0 imperfect interpolant sequences
[2025-03-08 09:42:10,612 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2025-03-08 09:42:10,612 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2025-03-08 09:42:10,613 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1052986467]
[2025-03-08 09:42:10,614 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2025-03-08 09:42:10,617 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2025-03-08 09:42:10,617 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2025-03-08 09:42:10,631 INFO  L144   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2025-03-08 09:42:10,632 INFO  L146   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2025-03-08 09:42:10,635 INFO  L87              Difference]: Start difference. First operand  has 362 states, 360 states have (on average 1.4972222222222222) internal successors, (539), 361 states have internal predecessors, (539), 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 12.75) internal successors, (51), 4 states have internal predecessors, (51), 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 09:42:10,883 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2025-03-08 09:42:10,883 INFO  L93              Difference]: Finished difference Result 681 states and 1017 transitions.
[2025-03-08 09:42:10,884 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2025-03-08 09:42:10,885 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 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 51
[2025-03-08 09:42:10,886 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2025-03-08 09:42:10,892 INFO  L225             Difference]: With dead ends: 681
[2025-03-08 09:42:10,893 INFO  L226             Difference]: Without dead ends: 361
[2025-03-08 09:42:10,895 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
[2025-03-08 09:42:10,899 INFO  L435           NwaCegarLoop]: 445 mSDtfsCounter, 0 mSDsluCounter, 885 mSDsCounter, 0 mSdLazyCounter, 274 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1330 SdHoareTripleChecker+Invalid, 274 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 274 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2025-03-08 09:42:10,900 INFO  L436           NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1330 Invalid, 274 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 274 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2025-03-08 09:42:10,912 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 361 states.
[2025-03-08 09:42:10,952 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 361 to 361.
[2025-03-08 09:42:10,954 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 361 states, 360 states have (on average 1.4916666666666667) internal successors, (537), 360 states have internal predecessors, (537), 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 09:42:10,956 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 361 states to 361 states and 537 transitions.
[2025-03-08 09:42:10,959 INFO  L78                 Accepts]: Start accepts. Automaton has 361 states and 537 transitions. Word has length 51
[2025-03-08 09:42:10,959 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2025-03-08 09:42:10,960 INFO  L471      AbstractCegarLoop]: Abstraction has 361 states and 537 transitions.
[2025-03-08 09:42:10,960 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 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 09:42:10,961 INFO  L276                IsEmpty]: Start isEmpty. Operand 361 states and 537 transitions.
[2025-03-08 09:42:10,961 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 53
[2025-03-08 09:42:10,962 INFO  L210           NwaCegarLoop]: Found error trace
[2025-03-08 09:42:10,963 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]
[2025-03-08 09:42:10,963 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2025-03-08 09:42:10,963 INFO  L396      AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2025-03-08 09:42:10,964 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2025-03-08 09:42:10,964 INFO  L85        PathProgramCache]: Analyzing trace with hash 1592388234, now seen corresponding path program 1 times
[2025-03-08 09:42:10,964 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2025-03-08 09:42:10,964 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2132209001]
[2025-03-08 09:42:10,964 INFO  L97    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2025-03-08 09:42:10,964 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2025-03-08 09:42:10,990 INFO  L108    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 52 statements into 1 equivalence classes.
[2025-03-08 09:42:11,024 INFO  L111    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 52 of 52 statements.
[2025-03-08 09:42:11,024 INFO  L114    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s)
[2025-03-08 09:42:11,024 INFO  L115    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2025-03-08 09:42:11,216 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 09:42:11,217 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2025-03-08 09:42:11,217 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2132209001]
[2025-03-08 09:42:11,217 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2132209001] provided 1 perfect and 0 imperfect interpolant sequences
[2025-03-08 09:42:11,217 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2025-03-08 09:42:11,217 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2025-03-08 09:42:11,217 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [351266737]
[2025-03-08 09:42:11,217 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2025-03-08 09:42:11,218 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2025-03-08 09:42:11,218 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2025-03-08 09:42:11,218 INFO  L144   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2025-03-08 09:42:11,218 INFO  L146   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2025-03-08 09:42:11,219 INFO  L87              Difference]: Start difference. First operand 361 states and 537 transitions. Second operand  has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 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 09:42:11,403 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2025-03-08 09:42:11,403 INFO  L93              Difference]: Finished difference Result 682 states and 1015 transitions.
[2025-03-08 09:42:11,404 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2025-03-08 09:42:11,405 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 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 52
[2025-03-08 09:42:11,405 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2025-03-08 09:42:11,406 INFO  L225             Difference]: With dead ends: 682
[2025-03-08 09:42:11,406 INFO  L226             Difference]: Without dead ends: 363
[2025-03-08 09:42:11,407 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
[2025-03-08 09:42:11,408 INFO  L435           NwaCegarLoop]: 445 mSDtfsCounter, 0 mSDsluCounter, 882 mSDsCounter, 0 mSdLazyCounter, 277 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1327 SdHoareTripleChecker+Invalid, 277 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 277 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2025-03-08 09:42:11,408 INFO  L436           NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1327 Invalid, 277 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 277 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2025-03-08 09:42:11,411 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 363 states.
[2025-03-08 09:42:11,431 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 363 to 363.
[2025-03-08 09:42:11,431 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 363 states, 362 states have (on average 1.488950276243094) internal successors, (539), 362 states have internal predecessors, (539), 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 09:42:11,432 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 363 states to 363 states and 539 transitions.
[2025-03-08 09:42:11,433 INFO  L78                 Accepts]: Start accepts. Automaton has 363 states and 539 transitions. Word has length 52
[2025-03-08 09:42:11,433 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2025-03-08 09:42:11,433 INFO  L471      AbstractCegarLoop]: Abstraction has 363 states and 539 transitions.
[2025-03-08 09:42:11,433 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 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 09:42:11,433 INFO  L276                IsEmpty]: Start isEmpty. Operand 363 states and 539 transitions.
[2025-03-08 09:42:11,434 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 54
[2025-03-08 09:42:11,434 INFO  L210           NwaCegarLoop]: Found error trace
[2025-03-08 09:42:11,434 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]
[2025-03-08 09:42:11,434 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2025-03-08 09:42:11,434 INFO  L396      AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2025-03-08 09:42:11,434 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2025-03-08 09:42:11,434 INFO  L85        PathProgramCache]: Analyzing trace with hash -244062623, now seen corresponding path program 1 times
[2025-03-08 09:42:11,435 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2025-03-08 09:42:11,435 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [150090272]
[2025-03-08 09:42:11,435 INFO  L97    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2025-03-08 09:42:11,435 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2025-03-08 09:42:11,461 INFO  L108    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 53 statements into 1 equivalence classes.
[2025-03-08 09:42:11,519 INFO  L111    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 53 of 53 statements.
[2025-03-08 09:42:11,522 INFO  L114    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s)
[2025-03-08 09:42:11,523 INFO  L115    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2025-03-08 09:42:11,727 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 09:42:11,728 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2025-03-08 09:42:11,728 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [150090272]
[2025-03-08 09:42:11,728 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [150090272] provided 1 perfect and 0 imperfect interpolant sequences
[2025-03-08 09:42:11,728 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2025-03-08 09:42:11,728 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2025-03-08 09:42:11,728 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [573961535]
[2025-03-08 09:42:11,728 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2025-03-08 09:42:11,728 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2025-03-08 09:42:11,729 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2025-03-08 09:42:11,729 INFO  L144   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2025-03-08 09:42:11,729 INFO  L146   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2025-03-08 09:42:11,729 INFO  L87              Difference]: Start difference. First operand 363 states and 539 transitions. Second operand  has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 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 09:42:11,903 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2025-03-08 09:42:11,903 INFO  L93              Difference]: Finished difference Result 686 states and 1019 transitions.
[2025-03-08 09:42:11,903 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2025-03-08 09:42:11,904 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 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 53
[2025-03-08 09:42:11,906 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2025-03-08 09:42:11,907 INFO  L225             Difference]: With dead ends: 686
[2025-03-08 09:42:11,907 INFO  L226             Difference]: Without dead ends: 365
[2025-03-08 09:42:11,908 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
[2025-03-08 09:42:11,911 INFO  L435           NwaCegarLoop]: 445 mSDtfsCounter, 0 mSDsluCounter, 882 mSDsCounter, 0 mSdLazyCounter, 277 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1327 SdHoareTripleChecker+Invalid, 277 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 277 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2025-03-08 09:42:11,911 INFO  L436           NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1327 Invalid, 277 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 277 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2025-03-08 09:42:11,912 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 365 states.
[2025-03-08 09:42:11,920 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 365 to 365.
[2025-03-08 09:42:11,922 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 365 states, 364 states have (on average 1.4862637362637363) internal successors, (541), 364 states have internal predecessors, (541), 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 09:42:11,924 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 365 states to 365 states and 541 transitions.
[2025-03-08 09:42:11,924 INFO  L78                 Accepts]: Start accepts. Automaton has 365 states and 541 transitions. Word has length 53
[2025-03-08 09:42:11,924 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2025-03-08 09:42:11,925 INFO  L471      AbstractCegarLoop]: Abstraction has 365 states and 541 transitions.
[2025-03-08 09:42:11,926 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 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 09:42:11,926 INFO  L276                IsEmpty]: Start isEmpty. Operand 365 states and 541 transitions.
[2025-03-08 09:42:11,926 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 55
[2025-03-08 09:42:11,926 INFO  L210           NwaCegarLoop]: Found error trace
[2025-03-08 09:42:11,926 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]
[2025-03-08 09:42:11,927 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2025-03-08 09:42:11,927 INFO  L396      AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2025-03-08 09:42:11,927 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2025-03-08 09:42:11,927 INFO  L85        PathProgramCache]: Analyzing trace with hash -1382611057, now seen corresponding path program 1 times
[2025-03-08 09:42:11,927 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2025-03-08 09:42:11,927 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1391143891]
[2025-03-08 09:42:11,927 INFO  L97    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2025-03-08 09:42:11,927 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2025-03-08 09:42:11,945 INFO  L108    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 54 statements into 1 equivalence classes.
[2025-03-08 09:42:11,966 INFO  L111    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 54 of 54 statements.
[2025-03-08 09:42:11,966 INFO  L114    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s)
[2025-03-08 09:42:11,967 INFO  L115    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2025-03-08 09:42:12,099 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 09:42:12,100 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2025-03-08 09:42:12,100 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1391143891]
[2025-03-08 09:42:12,100 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1391143891] provided 1 perfect and 0 imperfect interpolant sequences
[2025-03-08 09:42:12,100 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2025-03-08 09:42:12,100 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2025-03-08 09:42:12,100 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1282340924]
[2025-03-08 09:42:12,100 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2025-03-08 09:42:12,100 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2025-03-08 09:42:12,100 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2025-03-08 09:42:12,101 INFO  L144   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2025-03-08 09:42:12,101 INFO  L146   InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2025-03-08 09:42:12,101 INFO  L87              Difference]: Start difference. First operand 365 states and 541 transitions. Second operand  has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 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 09:42:12,296 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2025-03-08 09:42:12,296 INFO  L93              Difference]: Finished difference Result 718 states and 1065 transitions.
[2025-03-08 09:42:12,296 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2025-03-08 09:42:12,296 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 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 54
[2025-03-08 09:42:12,297 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2025-03-08 09:42:12,298 INFO  L225             Difference]: With dead ends: 718
[2025-03-08 09:42:12,298 INFO  L226             Difference]: Without dead ends: 395
[2025-03-08 09:42:12,298 INFO  L434           NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2025-03-08 09:42:12,300 INFO  L435           NwaCegarLoop]: 444 mSDtfsCounter, 28 mSDsluCounter, 1322 mSDsCounter, 0 mSdLazyCounter, 373 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 1766 SdHoareTripleChecker+Invalid, 373 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 373 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2025-03-08 09:42:12,300 INFO  L436           NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 1766 Invalid, 373 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 373 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2025-03-08 09:42:12,300 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 395 states.
[2025-03-08 09:42:12,307 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 395 to 395.
[2025-03-08 09:42:12,308 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 395 states, 394 states have (on average 1.484771573604061) internal successors, (585), 394 states have internal predecessors, (585), 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 09:42:12,309 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 395 states to 395 states and 585 transitions.
[2025-03-08 09:42:12,312 INFO  L78                 Accepts]: Start accepts. Automaton has 395 states and 585 transitions. Word has length 54
[2025-03-08 09:42:12,312 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2025-03-08 09:42:12,312 INFO  L471      AbstractCegarLoop]: Abstraction has 395 states and 585 transitions.
[2025-03-08 09:42:12,312 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 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 09:42:12,312 INFO  L276                IsEmpty]: Start isEmpty. Operand 395 states and 585 transitions.
[2025-03-08 09:42:12,313 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 56
[2025-03-08 09:42:12,313 INFO  L210           NwaCegarLoop]: Found error trace
[2025-03-08 09:42:12,313 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]
[2025-03-08 09:42:12,313 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3
[2025-03-08 09:42:12,314 INFO  L396      AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2025-03-08 09:42:12,314 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2025-03-08 09:42:12,314 INFO  L85        PathProgramCache]: Analyzing trace with hash 153206009, now seen corresponding path program 1 times
[2025-03-08 09:42:12,314 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2025-03-08 09:42:12,314 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1616665925]
[2025-03-08 09:42:12,314 INFO  L97    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2025-03-08 09:42:12,314 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2025-03-08 09:42:12,339 INFO  L108    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 55 statements into 1 equivalence classes.
[2025-03-08 09:42:12,391 INFO  L111    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 55 of 55 statements.
[2025-03-08 09:42:12,391 INFO  L114    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s)
[2025-03-08 09:42:12,391 INFO  L115    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2025-03-08 09:42:12,758 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 09:42:12,758 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2025-03-08 09:42:12,758 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1616665925]
[2025-03-08 09:42:12,758 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1616665925] provided 1 perfect and 0 imperfect interpolant sequences
[2025-03-08 09:42:12,759 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2025-03-08 09:42:12,759 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2025-03-08 09:42:12,759 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1210371566]
[2025-03-08 09:42:12,759 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2025-03-08 09:42:12,759 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2025-03-08 09:42:12,759 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2025-03-08 09:42:12,759 INFO  L144   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2025-03-08 09:42:12,759 INFO  L146   InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42
[2025-03-08 09:42:12,760 INFO  L87              Difference]: Start difference. First operand 395 states and 585 transitions. Second operand  has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 states have internal predecessors, (55), 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 09:42:13,042 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2025-03-08 09:42:13,042 INFO  L93              Difference]: Finished difference Result 754 states and 1117 transitions.
[2025-03-08 09:42:13,043 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2025-03-08 09:42:13,043 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 states have internal predecessors, (55), 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 55
[2025-03-08 09:42:13,043 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2025-03-08 09:42:13,044 INFO  L225             Difference]: With dead ends: 754
[2025-03-08 09:42:13,044 INFO  L226             Difference]: Without dead ends: 401
[2025-03-08 09:42:13,045 INFO  L434           NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72
[2025-03-08 09:42:13,045 INFO  L435           NwaCegarLoop]: 444 mSDtfsCounter, 523 mSDsluCounter, 1761 mSDsCounter, 0 mSdLazyCounter, 469 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 523 SdHoareTripleChecker+Valid, 2205 SdHoareTripleChecker+Invalid, 470 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 469 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2025-03-08 09:42:13,046 INFO  L436           NwaCegarLoop]: SdHoareTripleChecker [523 Valid, 2205 Invalid, 470 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 469 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2025-03-08 09:42:13,046 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 401 states.
[2025-03-08 09:42:13,055 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 401 to 401.
[2025-03-08 09:42:13,056 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 401 states, 400 states have (on average 1.4825) internal successors, (593), 400 states have internal predecessors, (593), 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 09:42:13,057 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 401 states to 401 states and 593 transitions.
[2025-03-08 09:42:13,057 INFO  L78                 Accepts]: Start accepts. Automaton has 401 states and 593 transitions. Word has length 55
[2025-03-08 09:42:13,057 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2025-03-08 09:42:13,057 INFO  L471      AbstractCegarLoop]: Abstraction has 401 states and 593 transitions.
[2025-03-08 09:42:13,058 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 states have internal predecessors, (55), 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 09:42:13,058 INFO  L276                IsEmpty]: Start isEmpty. Operand 401 states and 593 transitions.
[2025-03-08 09:42:13,058 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 57
[2025-03-08 09:42:13,058 INFO  L210           NwaCegarLoop]: Found error trace
[2025-03-08 09:42:13,060 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]
[2025-03-08 09:42:13,060 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4
[2025-03-08 09:42:13,060 INFO  L396      AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2025-03-08 09:42:13,060 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2025-03-08 09:42:13,061 INFO  L85        PathProgramCache]: Analyzing trace with hash 1529158361, now seen corresponding path program 1 times
[2025-03-08 09:42:13,061 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2025-03-08 09:42:13,061 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1925952670]
[2025-03-08 09:42:13,061 INFO  L97    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2025-03-08 09:42:13,061 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2025-03-08 09:42:13,081 INFO  L108    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 56 statements into 1 equivalence classes.
[2025-03-08 09:42:13,109 INFO  L111    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 56 of 56 statements.
[2025-03-08 09:42:13,110 INFO  L114    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s)
[2025-03-08 09:42:13,110 INFO  L115    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2025-03-08 09:42:13,309 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 09:42:13,309 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2025-03-08 09:42:13,309 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1925952670]
[2025-03-08 09:42:13,310 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1925952670] provided 1 perfect and 0 imperfect interpolant sequences
[2025-03-08 09:42:13,310 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2025-03-08 09:42:13,310 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2025-03-08 09:42:13,310 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2127007135]
[2025-03-08 09:42:13,310 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2025-03-08 09:42:13,310 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2025-03-08 09:42:13,310 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2025-03-08 09:42:13,311 INFO  L144   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2025-03-08 09:42:13,311 INFO  L146   InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30
[2025-03-08 09:42:13,311 INFO  L87              Difference]: Start difference. First operand 401 states and 593 transitions. Second operand  has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 6 states have internal predecessors, (56), 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 09:42:13,701 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2025-03-08 09:42:13,701 INFO  L93              Difference]: Finished difference Result 1057 states and 1564 transitions.
[2025-03-08 09:42:13,701 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2025-03-08 09:42:13,702 INFO  L78                 Accepts]: Start accepts. Automaton has  has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 6 states have internal predecessors, (56), 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 56
[2025-03-08 09:42:13,702 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2025-03-08 09:42:13,704 INFO  L225             Difference]: With dead ends: 1057
[2025-03-08 09:42:13,704 INFO  L226             Difference]: Without dead ends: 698
[2025-03-08 09:42:13,704 INFO  L434           NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56
[2025-03-08 09:42:13,705 INFO  L435           NwaCegarLoop]: 437 mSDtfsCounter, 1391 mSDsluCounter, 1185 mSDsCounter, 0 mSdLazyCounter, 518 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1391 SdHoareTripleChecker+Valid, 1622 SdHoareTripleChecker+Invalid, 519 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 518 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time
[2025-03-08 09:42:13,705 INFO  L436           NwaCegarLoop]: SdHoareTripleChecker [1391 Valid, 1622 Invalid, 519 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 518 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time]
[2025-03-08 09:42:13,706 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 698 states.
[2025-03-08 09:42:13,711 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 698 to 403.
[2025-03-08 09:42:13,715 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 403 states, 402 states have (on average 1.4800995024875623) internal successors, (595), 402 states have internal predecessors, (595), 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 09:42:13,716 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 403 states to 403 states and 595 transitions.
[2025-03-08 09:42:13,716 INFO  L78                 Accepts]: Start accepts. Automaton has 403 states and 595 transitions. Word has length 56
[2025-03-08 09:42:13,716 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2025-03-08 09:42:13,716 INFO  L471      AbstractCegarLoop]: Abstraction has 403 states and 595 transitions.
[2025-03-08 09:42:13,716 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 6 states have internal predecessors, (56), 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 09:42:13,716 INFO  L276                IsEmpty]: Start isEmpty. Operand 403 states and 595 transitions.
[2025-03-08 09:42:13,718 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 216
[2025-03-08 09:42:13,720 INFO  L210           NwaCegarLoop]: Found error trace
[2025-03-08 09:42:13,720 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2025-03-08 09:42:13,721 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5
[2025-03-08 09:42:13,721 INFO  L396      AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2025-03-08 09:42:13,721 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2025-03-08 09:42:13,721 INFO  L85        PathProgramCache]: Analyzing trace with hash -1614337595, now seen corresponding path program 1 times
[2025-03-08 09:42:13,721 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2025-03-08 09:42:13,721 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1664955835]
[2025-03-08 09:42:13,721 INFO  L97    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2025-03-08 09:42:13,721 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2025-03-08 09:42:13,782 INFO  L108    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 215 statements into 1 equivalence classes.
[2025-03-08 09:42:14,071 INFO  L111    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 215 of 215 statements.
[2025-03-08 09:42:14,071 INFO  L114    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s)
[2025-03-08 09:42:14,071 INFO  L115    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2025-03-08 09:42:14,541 INFO  L134       CoverageAnalysis]: Checked inductivity of 28 backedges. 26 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2025-03-08 09:42:14,542 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2025-03-08 09:42:14,543 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1664955835]
[2025-03-08 09:42:14,543 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1664955835] provided 0 perfect and 1 imperfect interpolant sequences
[2025-03-08 09:42:14,543 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1827213194]
[2025-03-08 09:42:14,543 INFO  L97    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2025-03-08 09:42:14,543 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2025-03-08 09:42:14,543 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2025-03-08 09:42:14,546 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 09:42:14,547 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 09:42:14,772 INFO  L108    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 215 statements into 1 equivalence classes.
[2025-03-08 09:42:14,987 INFO  L111    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 215 of 215 statements.
[2025-03-08 09:42:14,987 INFO  L114    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s)
[2025-03-08 09:42:14,988 INFO  L115    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2025-03-08 09:42:14,995 INFO  L256         TraceCheckSpWp]: Trace formula consists of 1431 conjuncts, 12 conjuncts are in the unsatisfiable core
[2025-03-08 09:42:15,002 INFO  L279         TraceCheckSpWp]: Computing forward predicates...
[2025-03-08 09:42:15,237 INFO  L134       CoverageAnalysis]: Checked inductivity of 28 backedges. 26 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2025-03-08 09:42:15,237 INFO  L312         TraceCheckSpWp]: Computing backward predicates...
[2025-03-08 09:42:15,678 INFO  L134       CoverageAnalysis]: Checked inductivity of 28 backedges. 26 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2025-03-08 09:42:15,678 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1827213194] provided 0 perfect and 2 imperfect interpolant sequences
[2025-03-08 09:42:15,678 INFO  L185   FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2025-03-08 09:42:15,678 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 11
[2025-03-08 09:42:15,678 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1800653703]
[2025-03-08 09:42:15,678 INFO  L85    oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2025-03-08 09:42:15,680 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 11 states
[2025-03-08 09:42:15,680 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2025-03-08 09:42:15,682 INFO  L144   InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants.
[2025-03-08 09:42:15,682 INFO  L146   InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110
[2025-03-08 09:42:15,683 INFO  L87              Difference]: Start difference. First operand 403 states and 595 transitions. Second operand  has 11 states, 11 states have (on average 49.90909090909091) internal successors, (549), 11 states have internal predecessors, (549), 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 09:42:16,474 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2025-03-08 09:42:16,474 INFO  L93              Difference]: Finished difference Result 1519 states and 2251 transitions.
[2025-03-08 09:42:16,475 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. 
[2025-03-08 09:42:16,475 INFO  L78                 Accepts]: Start accepts. Automaton has  has 11 states, 11 states have (on average 49.90909090909091) internal successors, (549), 11 states have internal predecessors, (549), 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 215
[2025-03-08 09:42:16,476 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2025-03-08 09:42:16,479 INFO  L225             Difference]: With dead ends: 1519
[2025-03-08 09:42:16,480 INFO  L226             Difference]: Without dead ends: 701
[2025-03-08 09:42:16,483 INFO  L434           NwaCegarLoop]: 0 DeclaredPredicates, 442 GetRequests, 425 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=80, Invalid=262, Unknown=0, NotChecked=0, Total=342
[2025-03-08 09:42:16,484 INFO  L435           NwaCegarLoop]: 450 mSDtfsCounter, 2449 mSDsluCounter, 2868 mSDsCounter, 0 mSdLazyCounter, 1192 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2449 SdHoareTripleChecker+Valid, 3318 SdHoareTripleChecker+Invalid, 1242 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 1192 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time
[2025-03-08 09:42:16,484 INFO  L436           NwaCegarLoop]: SdHoareTripleChecker [2449 Valid, 3318 Invalid, 1242 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 1192 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time]
[2025-03-08 09:42:16,485 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 701 states.
[2025-03-08 09:42:16,503 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 701 to 699.
[2025-03-08 09:42:16,504 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 699 states, 698 states have (on average 1.478510028653295) internal successors, (1032), 698 states have internal predecessors, (1032), 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 09:42:16,505 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 699 states to 699 states and 1032 transitions.
[2025-03-08 09:42:16,506 INFO  L78                 Accepts]: Start accepts. Automaton has 699 states and 1032 transitions. Word has length 215
[2025-03-08 09:42:16,506 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2025-03-08 09:42:16,506 INFO  L471      AbstractCegarLoop]: Abstraction has 699 states and 1032 transitions.
[2025-03-08 09:42:16,507 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 11 states, 11 states have (on average 49.90909090909091) internal successors, (549), 11 states have internal predecessors, (549), 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 09:42:16,507 INFO  L276                IsEmpty]: Start isEmpty. Operand 699 states and 1032 transitions.
[2025-03-08 09:42:16,510 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 218
[2025-03-08 09:42:16,510 INFO  L210           NwaCegarLoop]: Found error trace
[2025-03-08 09:42:16,510 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2025-03-08 09:42:16,520 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0
[2025-03-08 09:42:16,710 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2025-03-08 09:42:16,711 INFO  L396      AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2025-03-08 09:42:16,711 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2025-03-08 09:42:16,711 INFO  L85        PathProgramCache]: Analyzing trace with hash -1585110678, now seen corresponding path program 1 times
[2025-03-08 09:42:16,711 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2025-03-08 09:42:16,711 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1290560643]
[2025-03-08 09:42:16,711 INFO  L97    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2025-03-08 09:42:16,711 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2025-03-08 09:42:16,760 INFO  L108    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 217 statements into 1 equivalence classes.
[2025-03-08 09:42:16,994 INFO  L111    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 217 of 217 statements.
[2025-03-08 09:42:16,994 INFO  L114    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s)
[2025-03-08 09:42:16,994 INFO  L115    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2025-03-08 09:42:18,037 INFO  L134       CoverageAnalysis]: Checked inductivity of 28 backedges. 7 proven. 3 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked.
[2025-03-08 09:42:18,037 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2025-03-08 09:42:18,037 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1290560643]
[2025-03-08 09:42:18,037 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1290560643] provided 0 perfect and 1 imperfect interpolant sequences
[2025-03-08 09:42:18,037 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [411269950]
[2025-03-08 09:42:18,037 INFO  L97    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2025-03-08 09:42:18,037 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2025-03-08 09:42:18,037 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2025-03-08 09:42:18,040 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 09:42:18,041 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 09:42:18,274 INFO  L108    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 217 statements into 1 equivalence classes.
[2025-03-08 09:42:18,505 INFO  L111    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 217 of 217 statements.
[2025-03-08 09:42:18,505 INFO  L114    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s)
[2025-03-08 09:42:18,505 INFO  L115    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2025-03-08 09:42:18,513 INFO  L256         TraceCheckSpWp]: Trace formula consists of 1437 conjuncts, 36 conjuncts are in the unsatisfiable core
[2025-03-08 09:42:18,520 INFO  L279         TraceCheckSpWp]: Computing forward predicates...
[2025-03-08 09:42:18,726 INFO  L134       CoverageAnalysis]: Checked inductivity of 28 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2025-03-08 09:42:18,726 INFO  L308         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2025-03-08 09:42:18,726 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [411269950] provided 1 perfect and 0 imperfect interpolant sequences
[2025-03-08 09:42:18,726 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2025-03-08 09:42:18,726 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8] total 12
[2025-03-08 09:42:18,726 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2107656718]
[2025-03-08 09:42:18,726 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2025-03-08 09:42:18,727 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2025-03-08 09:42:18,727 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2025-03-08 09:42:18,727 INFO  L144   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2025-03-08 09:42:18,728 INFO  L146   InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132
[2025-03-08 09:42:18,728 INFO  L87              Difference]: Start difference. First operand 699 states and 1032 transitions. Second operand  has 6 states, 6 states have (on average 36.166666666666664) internal successors, (217), 6 states have internal predecessors, (217), 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 09:42:19,133 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2025-03-08 09:42:19,133 INFO  L93              Difference]: Finished difference Result 1308 states and 1937 transitions.
[2025-03-08 09:42:19,133 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2025-03-08 09:42:19,134 INFO  L78                 Accepts]: Start accepts. Automaton has  has 6 states, 6 states have (on average 36.166666666666664) internal successors, (217), 6 states have internal predecessors, (217), 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 217
[2025-03-08 09:42:19,134 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2025-03-08 09:42:19,136 INFO  L225             Difference]: With dead ends: 1308
[2025-03-08 09:42:19,136 INFO  L226             Difference]: Without dead ends: 699
[2025-03-08 09:42:19,137 INFO  L434           NwaCegarLoop]: 0 DeclaredPredicates, 226 GetRequests, 214 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182
[2025-03-08 09:42:19,137 INFO  L435           NwaCegarLoop]: 315 mSDtfsCounter, 665 mSDsluCounter, 624 mSDsCounter, 0 mSdLazyCounter, 666 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 665 SdHoareTripleChecker+Valid, 939 SdHoareTripleChecker+Invalid, 666 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 666 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time
[2025-03-08 09:42:19,137 INFO  L436           NwaCegarLoop]: SdHoareTripleChecker [665 Valid, 939 Invalid, 666 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 666 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time]
[2025-03-08 09:42:19,138 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 699 states.
[2025-03-08 09:42:19,147 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 699 to 699.
[2025-03-08 09:42:19,148 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 699 states, 698 states have (on average 1.4770773638968482) internal successors, (1031), 698 states have internal predecessors, (1031), 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 09:42:19,150 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 699 states to 699 states and 1031 transitions.
[2025-03-08 09:42:19,150 INFO  L78                 Accepts]: Start accepts. Automaton has 699 states and 1031 transitions. Word has length 217
[2025-03-08 09:42:19,150 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2025-03-08 09:42:19,150 INFO  L471      AbstractCegarLoop]: Abstraction has 699 states and 1031 transitions.
[2025-03-08 09:42:19,150 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 6 states, 6 states have (on average 36.166666666666664) internal successors, (217), 6 states have internal predecessors, (217), 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 09:42:19,150 INFO  L276                IsEmpty]: Start isEmpty. Operand 699 states and 1031 transitions.
[2025-03-08 09:42:19,151 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 219
[2025-03-08 09:42:19,152 INFO  L210           NwaCegarLoop]: Found error trace
[2025-03-08 09:42:19,152 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2025-03-08 09:42:19,162 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 09:42:19,356 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,SelfDestructingSolverStorable7
[2025-03-08 09:42:19,356 INFO  L396      AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2025-03-08 09:42:19,357 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2025-03-08 09:42:19,357 INFO  L85        PathProgramCache]: Analyzing trace with hash -1773177347, now seen corresponding path program 1 times
[2025-03-08 09:42:19,357 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2025-03-08 09:42:19,357 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1660768366]
[2025-03-08 09:42:19,357 INFO  L97    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2025-03-08 09:42:19,357 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2025-03-08 09:42:19,403 INFO  L108    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 218 statements into 1 equivalence classes.
[2025-03-08 09:42:19,608 INFO  L111    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 218 of 218 statements.
[2025-03-08 09:42:19,608 INFO  L114    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s)
[2025-03-08 09:42:19,608 INFO  L115    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2025-03-08 09:42:20,030 INFO  L134       CoverageAnalysis]: Checked inductivity of 28 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2025-03-08 09:42:20,030 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2025-03-08 09:42:20,030 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1660768366]
[2025-03-08 09:42:20,030 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1660768366] provided 1 perfect and 0 imperfect interpolant sequences
[2025-03-08 09:42:20,030 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2025-03-08 09:42:20,030 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2025-03-08 09:42:20,031 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [179815514]
[2025-03-08 09:42:20,031 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2025-03-08 09:42:20,031 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2025-03-08 09:42:20,031 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2025-03-08 09:42:20,031 INFO  L144   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2025-03-08 09:42:20,031 INFO  L146   InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2025-03-08 09:42:20,032 INFO  L87              Difference]: Start difference. First operand 699 states and 1031 transitions. Second operand  has 5 states, 5 states have (on average 43.6) internal successors, (218), 5 states have internal predecessors, (218), 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 09:42:20,505 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2025-03-08 09:42:20,505 INFO  L93              Difference]: Finished difference Result 1060 states and 1565 transitions.
[2025-03-08 09:42:20,505 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2025-03-08 09:42:20,506 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 43.6) internal successors, (218), 5 states have internal predecessors, (218), 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 218
[2025-03-08 09:42:20,506 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2025-03-08 09:42:20,508 INFO  L225             Difference]: With dead ends: 1060
[2025-03-08 09:42:20,508 INFO  L226             Difference]: Without dead ends: 701
[2025-03-08 09:42:20,509 INFO  L434           NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42
[2025-03-08 09:42:20,509 INFO  L435           NwaCegarLoop]: 318 mSDtfsCounter, 1235 mSDsluCounter, 632 mSDsCounter, 0 mSdLazyCounter, 655 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1235 SdHoareTripleChecker+Valid, 950 SdHoareTripleChecker+Invalid, 655 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 655 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time
[2025-03-08 09:42:20,509 INFO  L436           NwaCegarLoop]: SdHoareTripleChecker [1235 Valid, 950 Invalid, 655 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 655 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time]
[2025-03-08 09:42:20,510 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 701 states.
[2025-03-08 09:42:20,519 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 701 to 700.
[2025-03-08 09:42:20,520 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 700 states, 699 states have (on average 1.4763948497854078) internal successors, (1032), 699 states have internal predecessors, (1032), 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 09:42:20,521 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 700 states to 700 states and 1032 transitions.
[2025-03-08 09:42:20,521 INFO  L78                 Accepts]: Start accepts. Automaton has 700 states and 1032 transitions. Word has length 218
[2025-03-08 09:42:20,522 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2025-03-08 09:42:20,522 INFO  L471      AbstractCegarLoop]: Abstraction has 700 states and 1032 transitions.
[2025-03-08 09:42:20,522 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 43.6) internal successors, (218), 5 states have internal predecessors, (218), 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 09:42:20,522 INFO  L276                IsEmpty]: Start isEmpty. Operand 700 states and 1032 transitions.
[2025-03-08 09:42:20,526 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 220
[2025-03-08 09:42:20,526 INFO  L210           NwaCegarLoop]: Found error trace
[2025-03-08 09:42:20,527 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2025-03-08 09:42:20,527 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8
[2025-03-08 09:42:20,527 INFO  L396      AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2025-03-08 09:42:20,527 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2025-03-08 09:42:20,528 INFO  L85        PathProgramCache]: Analyzing trace with hash 255038488, now seen corresponding path program 1 times
[2025-03-08 09:42:20,528 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2025-03-08 09:42:20,528 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1917503548]
[2025-03-08 09:42:20,528 INFO  L97    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2025-03-08 09:42:20,528 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2025-03-08 09:42:20,574 INFO  L108    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 219 statements into 1 equivalence classes.
[2025-03-08 09:42:20,763 INFO  L111    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 219 of 219 statements.
[2025-03-08 09:42:20,763 INFO  L114    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s)
[2025-03-08 09:42:20,763 INFO  L115    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2025-03-08 09:42:21,324 INFO  L134       CoverageAnalysis]: Checked inductivity of 28 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2025-03-08 09:42:21,324 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2025-03-08 09:42:21,324 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1917503548]
[2025-03-08 09:42:21,324 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1917503548] provided 1 perfect and 0 imperfect interpolant sequences
[2025-03-08 09:42:21,324 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2025-03-08 09:42:21,324 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8
[2025-03-08 09:42:21,325 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1424066477]
[2025-03-08 09:42:21,325 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2025-03-08 09:42:21,325 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 8 states
[2025-03-08 09:42:21,325 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2025-03-08 09:42:21,325 INFO  L144   InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2025-03-08 09:42:21,326 INFO  L146   InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56
[2025-03-08 09:42:21,326 INFO  L87              Difference]: Start difference. First operand 700 states and 1032 transitions. Second operand  has 8 states, 8 states have (on average 27.375) internal successors, (219), 8 states have internal predecessors, (219), 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 09:42:22,261 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2025-03-08 09:42:22,261 INFO  L93              Difference]: Finished difference Result 1405 states and 2075 transitions.
[2025-03-08 09:42:22,262 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. 
[2025-03-08 09:42:22,262 INFO  L78                 Accepts]: Start accepts. Automaton has  has 8 states, 8 states have (on average 27.375) internal successors, (219), 8 states have internal predecessors, (219), 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 219
[2025-03-08 09:42:22,262 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2025-03-08 09:42:22,265 INFO  L225             Difference]: With dead ends: 1405
[2025-03-08 09:42:22,265 INFO  L226             Difference]: Without dead ends: 1046
[2025-03-08 09:42:22,266 INFO  L434           NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90
[2025-03-08 09:42:22,266 INFO  L435           NwaCegarLoop]: 592 mSDtfsCounter, 1084 mSDsluCounter, 2230 mSDsCounter, 0 mSdLazyCounter, 1807 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1084 SdHoareTripleChecker+Valid, 2822 SdHoareTripleChecker+Invalid, 1808 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1807 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time
[2025-03-08 09:42:22,266 INFO  L436           NwaCegarLoop]: SdHoareTripleChecker [1084 Valid, 2822 Invalid, 1808 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1807 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time]
[2025-03-08 09:42:22,267 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 1046 states.
[2025-03-08 09:42:22,275 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 1046 to 704.
[2025-03-08 09:42:22,277 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 704 states, 703 states have (on average 1.4736842105263157) internal successors, (1036), 703 states have internal predecessors, (1036), 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 09:42:22,278 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 704 states to 704 states and 1036 transitions.
[2025-03-08 09:42:22,279 INFO  L78                 Accepts]: Start accepts. Automaton has 704 states and 1036 transitions. Word has length 219
[2025-03-08 09:42:22,279 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2025-03-08 09:42:22,279 INFO  L471      AbstractCegarLoop]: Abstraction has 704 states and 1036 transitions.
[2025-03-08 09:42:22,279 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 8 states, 8 states have (on average 27.375) internal successors, (219), 8 states have internal predecessors, (219), 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 09:42:22,279 INFO  L276                IsEmpty]: Start isEmpty. Operand 704 states and 1036 transitions.
[2025-03-08 09:42:22,281 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 221
[2025-03-08 09:42:22,281 INFO  L210           NwaCegarLoop]: Found error trace
[2025-03-08 09:42:22,281 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2025-03-08 09:42:22,281 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9
[2025-03-08 09:42:22,281 INFO  L396      AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2025-03-08 09:42:22,282 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2025-03-08 09:42:22,282 INFO  L85        PathProgramCache]: Analyzing trace with hash 766944056, now seen corresponding path program 1 times
[2025-03-08 09:42:22,282 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2025-03-08 09:42:22,282 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [713789344]
[2025-03-08 09:42:22,282 INFO  L97    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2025-03-08 09:42:22,282 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2025-03-08 09:42:22,329 INFO  L108    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 220 statements into 1 equivalence classes.
[2025-03-08 09:42:22,632 INFO  L111    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 220 of 220 statements.
[2025-03-08 09:42:22,633 INFO  L114    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s)
[2025-03-08 09:42:22,633 INFO  L115    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2025-03-08 09:42:23,433 INFO  L134       CoverageAnalysis]: Checked inductivity of 28 backedges. 7 proven. 17 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked.
[2025-03-08 09:42:23,433 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2025-03-08 09:42:23,433 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [713789344]
[2025-03-08 09:42:23,433 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [713789344] provided 0 perfect and 1 imperfect interpolant sequences
[2025-03-08 09:42:23,433 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1109218081]
[2025-03-08 09:42:23,433 INFO  L97    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2025-03-08 09:42:23,433 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2025-03-08 09:42:23,433 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2025-03-08 09:42:23,436 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 09:42:23,437 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 09:42:23,746 INFO  L108    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 220 statements into 1 equivalence classes.
[2025-03-08 09:42:23,943 INFO  L111    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 220 of 220 statements.
[2025-03-08 09:42:23,943 INFO  L114    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s)
[2025-03-08 09:42:23,944 INFO  L115    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2025-03-08 09:42:23,951 INFO  L256         TraceCheckSpWp]: Trace formula consists of 1440 conjuncts, 71 conjuncts are in the unsatisfiable core
[2025-03-08 09:42:23,960 INFO  L279         TraceCheckSpWp]: Computing forward predicates...
[2025-03-08 09:42:24,704 INFO  L134       CoverageAnalysis]: Checked inductivity of 28 backedges. 6 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2025-03-08 09:42:24,705 INFO  L312         TraceCheckSpWp]: Computing backward predicates...
[2025-03-08 09:42:25,402 INFO  L134       CoverageAnalysis]: Checked inductivity of 28 backedges. 24 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2025-03-08 09:42:25,403 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1109218081] provided 0 perfect and 2 imperfect interpolant sequences
[2025-03-08 09:42:25,403 INFO  L185   FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2025-03-08 09:42:25,403 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 15, 10] total 29
[2025-03-08 09:42:25,403 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [400869169]
[2025-03-08 09:42:25,403 INFO  L85    oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2025-03-08 09:42:25,405 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 29 states
[2025-03-08 09:42:25,405 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2025-03-08 09:42:25,406 INFO  L144   InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants.
[2025-03-08 09:42:25,406 INFO  L146   InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=689, Unknown=0, NotChecked=0, Total=812
[2025-03-08 09:42:25,406 INFO  L87              Difference]: Start difference. First operand 704 states and 1036 transitions. Second operand  has 29 states, 29 states have (on average 21.93103448275862) internal successors, (636), 29 states have internal predecessors, (636), 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 09:42:27,257 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2025-03-08 09:42:27,257 INFO  L93              Difference]: Finished difference Result 1355 states and 1991 transitions.
[2025-03-08 09:42:27,258 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. 
[2025-03-08 09:42:27,258 INFO  L78                 Accepts]: Start accepts. Automaton has  has 29 states, 29 states have (on average 21.93103448275862) internal successors, (636), 29 states have internal predecessors, (636), 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 220
[2025-03-08 09:42:27,258 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2025-03-08 09:42:27,260 INFO  L225             Difference]: With dead ends: 1355
[2025-03-08 09:42:27,260 INFO  L226             Difference]: Without dead ends: 728
[2025-03-08 09:42:27,263 INFO  L434           NwaCegarLoop]: 0 DeclaredPredicates, 466 GetRequests, 420 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 380 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=361, Invalid=1895, Unknown=0, NotChecked=0, Total=2256
[2025-03-08 09:42:27,264 INFO  L435           NwaCegarLoop]: 309 mSDtfsCounter, 1115 mSDsluCounter, 4846 mSDsCounter, 0 mSdLazyCounter, 3842 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1115 SdHoareTripleChecker+Valid, 5155 SdHoareTripleChecker+Invalid, 3847 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 3842 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time
[2025-03-08 09:42:27,264 INFO  L436           NwaCegarLoop]: SdHoareTripleChecker [1115 Valid, 5155 Invalid, 3847 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 3842 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time]
[2025-03-08 09:42:27,266 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 728 states.
[2025-03-08 09:42:27,276 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 728 to 713.
[2025-03-08 09:42:27,277 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 713 states, 712 states have (on average 1.4719101123595506) internal successors, (1048), 712 states have internal predecessors, (1048), 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 09:42:27,279 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 713 states to 713 states and 1048 transitions.
[2025-03-08 09:42:27,279 INFO  L78                 Accepts]: Start accepts. Automaton has 713 states and 1048 transitions. Word has length 220
[2025-03-08 09:42:27,280 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2025-03-08 09:42:27,280 INFO  L471      AbstractCegarLoop]: Abstraction has 713 states and 1048 transitions.
[2025-03-08 09:42:27,280 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 29 states, 29 states have (on average 21.93103448275862) internal successors, (636), 29 states have internal predecessors, (636), 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 09:42:27,280 INFO  L276                IsEmpty]: Start isEmpty. Operand 713 states and 1048 transitions.
[2025-03-08 09:42:27,282 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 223
[2025-03-08 09:42:27,282 INFO  L210           NwaCegarLoop]: Found error trace
[2025-03-08 09:42:27,282 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2025-03-08 09:42:27,292 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0
[2025-03-08 09:42:27,483 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2025-03-08 09:42:27,483 INFO  L396      AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2025-03-08 09:42:27,483 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2025-03-08 09:42:27,484 INFO  L85        PathProgramCache]: Analyzing trace with hash -193082095, now seen corresponding path program 1 times
[2025-03-08 09:42:27,484 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2025-03-08 09:42:27,484 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [269967852]
[2025-03-08 09:42:27,484 INFO  L97    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2025-03-08 09:42:27,484 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2025-03-08 09:42:27,532 INFO  L108    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 222 statements into 1 equivalence classes.
[2025-03-08 09:42:27,568 INFO  L111    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 222 of 222 statements.
[2025-03-08 09:42:27,569 INFO  L114    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s)
[2025-03-08 09:42:27,569 INFO  L115    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2025-03-08 09:42:27,994 INFO  L134       CoverageAnalysis]: Checked inductivity of 28 backedges. 24 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2025-03-08 09:42:27,995 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2025-03-08 09:42:27,995 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [269967852]
[2025-03-08 09:42:27,995 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [269967852] provided 0 perfect and 1 imperfect interpolant sequences
[2025-03-08 09:42:27,995 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1298804399]
[2025-03-08 09:42:27,995 INFO  L97    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2025-03-08 09:42:27,995 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2025-03-08 09:42:27,995 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2025-03-08 09:42:27,997 INFO  L229       MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2025-03-08 09:42:27,998 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process
[2025-03-08 09:42:28,288 INFO  L108    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 222 statements into 1 equivalence classes.
[2025-03-08 09:42:28,499 INFO  L111    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 222 of 222 statements.
[2025-03-08 09:42:28,499 INFO  L114    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s)
[2025-03-08 09:42:28,499 INFO  L115    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2025-03-08 09:42:28,507 INFO  L256         TraceCheckSpWp]: Trace formula consists of 1446 conjuncts, 38 conjuncts are in the unsatisfiable core
[2025-03-08 09:42:28,512 INFO  L279         TraceCheckSpWp]: Computing forward predicates...
[2025-03-08 09:42:29,120 INFO  L134       CoverageAnalysis]: Checked inductivity of 28 backedges. 24 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2025-03-08 09:42:29,121 INFO  L312         TraceCheckSpWp]: Computing backward predicates...
[2025-03-08 09:42:30,010 INFO  L134       CoverageAnalysis]: Checked inductivity of 28 backedges. 21 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2025-03-08 09:42:30,010 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1298804399] provided 0 perfect and 2 imperfect interpolant sequences
[2025-03-08 09:42:30,010 INFO  L185   FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2025-03-08 09:42:30,010 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 11] total 22
[2025-03-08 09:42:30,010 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1630980255]
[2025-03-08 09:42:30,010 INFO  L85    oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2025-03-08 09:42:30,014 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 22 states
[2025-03-08 09:42:30,014 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2025-03-08 09:42:30,015 INFO  L144   InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants.
[2025-03-08 09:42:30,015 INFO  L146   InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=401, Unknown=0, NotChecked=0, Total=462
[2025-03-08 09:42:30,015 INFO  L87              Difference]: Start difference. First operand 713 states and 1048 transitions. Second operand  has 22 states, 22 states have (on average 28.681818181818183) internal successors, (631), 22 states have internal predecessors, (631), 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 09:42:31,277 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2025-03-08 09:42:31,277 INFO  L93              Difference]: Finished difference Result 1438 states and 2107 transitions.
[2025-03-08 09:42:31,278 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. 
[2025-03-08 09:42:31,278 INFO  L78                 Accepts]: Start accepts. Automaton has  has 22 states, 22 states have (on average 28.681818181818183) internal successors, (631), 22 states have internal predecessors, (631), 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 222
[2025-03-08 09:42:31,278 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2025-03-08 09:42:31,281 INFO  L225             Difference]: With dead ends: 1438
[2025-03-08 09:42:31,281 INFO  L226             Difference]: Without dead ends: 771
[2025-03-08 09:42:31,282 INFO  L434           NwaCegarLoop]: 0 DeclaredPredicates, 465 GetRequests, 432 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 204 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=206, Invalid=984, Unknown=0, NotChecked=0, Total=1190
[2025-03-08 09:42:31,282 INFO  L435           NwaCegarLoop]: 311 mSDtfsCounter, 3322 mSDsluCounter, 4341 mSDsCounter, 0 mSdLazyCounter, 3368 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3322 SdHoareTripleChecker+Valid, 4652 SdHoareTripleChecker+Invalid, 3377 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 3368 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time
[2025-03-08 09:42:31,282 INFO  L436           NwaCegarLoop]: SdHoareTripleChecker [3322 Valid, 4652 Invalid, 3377 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 3368 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time]
[2025-03-08 09:42:31,283 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 771 states.
[2025-03-08 09:42:31,290 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 771 to 727.
[2025-03-08 09:42:31,291 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 727 states, 726 states have (on average 1.465564738292011) internal successors, (1064), 726 states have internal predecessors, (1064), 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 09:42:31,292 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 727 states to 727 states and 1064 transitions.
[2025-03-08 09:42:31,292 INFO  L78                 Accepts]: Start accepts. Automaton has 727 states and 1064 transitions. Word has length 222
[2025-03-08 09:42:31,292 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2025-03-08 09:42:31,292 INFO  L471      AbstractCegarLoop]: Abstraction has 727 states and 1064 transitions.
[2025-03-08 09:42:31,293 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 22 states, 22 states have (on average 28.681818181818183) internal successors, (631), 22 states have internal predecessors, (631), 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 09:42:31,293 INFO  L276                IsEmpty]: Start isEmpty. Operand 727 states and 1064 transitions.
[2025-03-08 09:42:31,295 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 383
[2025-03-08 09:42:31,295 INFO  L210           NwaCegarLoop]: Found error trace
[2025-03-08 09:42:31,296 INFO  L218           NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2025-03-08 09:42:31,308 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0
[2025-03-08 09:42:31,496 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2025-03-08 09:42:31,496 INFO  L396      AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2025-03-08 09:42:31,497 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2025-03-08 09:42:31,497 INFO  L85        PathProgramCache]: Analyzing trace with hash 1080331327, now seen corresponding path program 1 times
[2025-03-08 09:42:31,497 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2025-03-08 09:42:31,497 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [673146458]
[2025-03-08 09:42:31,497 INFO  L97    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2025-03-08 09:42:31,497 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2025-03-08 09:42:31,554 INFO  L108    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 382 statements into 1 equivalence classes.
[2025-03-08 09:42:32,028 INFO  L111    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 382 of 382 statements.
[2025-03-08 09:42:32,029 INFO  L114    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s)
[2025-03-08 09:42:32,029 INFO  L115    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2025-03-08 09:42:32,633 INFO  L134       CoverageAnalysis]: Checked inductivity of 215 backedges. 185 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2025-03-08 09:42:32,633 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2025-03-08 09:42:32,634 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [673146458]
[2025-03-08 09:42:32,634 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [673146458] provided 0 perfect and 1 imperfect interpolant sequences
[2025-03-08 09:42:32,634 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [177760565]
[2025-03-08 09:42:32,634 INFO  L97    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2025-03-08 09:42:32,634 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2025-03-08 09:42:32,634 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2025-03-08 09:42:32,636 INFO  L229       MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2025-03-08 09:42:32,637 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process
[2025-03-08 09:42:33,003 INFO  L108    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 382 statements into 1 equivalence classes.
[2025-03-08 09:42:33,397 INFO  L111    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 382 of 382 statements.
[2025-03-08 09:42:33,398 INFO  L114    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s)
[2025-03-08 09:42:33,398 INFO  L115    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2025-03-08 09:42:33,409 INFO  L256         TraceCheckSpWp]: Trace formula consists of 2478 conjuncts, 16 conjuncts are in the unsatisfiable core
[2025-03-08 09:42:33,415 INFO  L279         TraceCheckSpWp]: Computing forward predicates...
[2025-03-08 09:42:33,873 INFO  L134       CoverageAnalysis]: Checked inductivity of 215 backedges. 185 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2025-03-08 09:42:33,874 INFO  L312         TraceCheckSpWp]: Computing backward predicates...
[2025-03-08 09:42:34,433 INFO  L134       CoverageAnalysis]: Checked inductivity of 215 backedges. 185 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2025-03-08 09:42:34,433 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [177760565] provided 0 perfect and 2 imperfect interpolant sequences
[2025-03-08 09:42:34,433 INFO  L185   FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2025-03-08 09:42:34,434 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 15
[2025-03-08 09:42:34,434 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1629037672]
[2025-03-08 09:42:34,434 INFO  L85    oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2025-03-08 09:42:34,434 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 15 states
[2025-03-08 09:42:34,434 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2025-03-08 09:42:34,435 INFO  L144   InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants.
[2025-03-08 09:42:34,435 INFO  L146   InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210
[2025-03-08 09:42:34,435 INFO  L87              Difference]: Start difference. First operand 727 states and 1064 transitions. Second operand  has 15 states, 15 states have (on average 39.93333333333333) internal successors, (599), 15 states have internal predecessors, (599), 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 09:42:34,926 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2025-03-08 09:42:34,926 INFO  L93              Difference]: Finished difference Result 1141 states and 1669 transitions.
[2025-03-08 09:42:34,926 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. 
[2025-03-08 09:42:34,927 INFO  L78                 Accepts]: Start accepts. Automaton has  has 15 states, 15 states have (on average 39.93333333333333) internal successors, (599), 15 states have internal predecessors, (599), 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 382
[2025-03-08 09:42:34,927 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2025-03-08 09:42:34,929 INFO  L225             Difference]: With dead ends: 1141
[2025-03-08 09:42:34,929 INFO  L226             Difference]: Without dead ends: 772
[2025-03-08 09:42:34,930 INFO  L434           NwaCegarLoop]: 0 DeclaredPredicates, 778 GetRequests, 757 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=109, Invalid=397, Unknown=0, NotChecked=0, Total=506
[2025-03-08 09:42:34,930 INFO  L435           NwaCegarLoop]: 380 mSDtfsCounter, 2249 mSDsluCounter, 1985 mSDsCounter, 0 mSdLazyCounter, 1026 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2249 SdHoareTripleChecker+Valid, 2365 SdHoareTripleChecker+Invalid, 1028 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1026 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time
[2025-03-08 09:42:34,931 INFO  L436           NwaCegarLoop]: SdHoareTripleChecker [2249 Valid, 2365 Invalid, 1028 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1026 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time]
[2025-03-08 09:42:34,932 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 772 states.
[2025-03-08 09:42:34,940 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 772 to 770.
[2025-03-08 09:42:34,942 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 770 states, 769 states have (on average 1.459037711313394) internal successors, (1122), 769 states have internal predecessors, (1122), 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 09:42:34,943 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 770 states to 770 states and 1122 transitions.
[2025-03-08 09:42:34,943 INFO  L78                 Accepts]: Start accepts. Automaton has 770 states and 1122 transitions. Word has length 382
[2025-03-08 09:42:34,943 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2025-03-08 09:42:34,943 INFO  L471      AbstractCegarLoop]: Abstraction has 770 states and 1122 transitions.
[2025-03-08 09:42:34,943 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 15 states, 15 states have (on average 39.93333333333333) internal successors, (599), 15 states have internal predecessors, (599), 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 09:42:34,944 INFO  L276                IsEmpty]: Start isEmpty. Operand 770 states and 1122 transitions.
[2025-03-08 09:42:34,946 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 384
[2025-03-08 09:42:34,947 INFO  L210           NwaCegarLoop]: Found error trace
[2025-03-08 09:42:34,947 INFO  L218           NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2025-03-08 09:42:34,960 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0
[2025-03-08 09:42:35,147 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12
[2025-03-08 09:42:35,148 INFO  L396      AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2025-03-08 09:42:35,148 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2025-03-08 09:42:35,149 INFO  L85        PathProgramCache]: Analyzing trace with hash 1839489895, now seen corresponding path program 1 times
[2025-03-08 09:42:35,149 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2025-03-08 09:42:35,149 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1162364405]
[2025-03-08 09:42:35,149 INFO  L97    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2025-03-08 09:42:35,149 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2025-03-08 09:42:35,208 INFO  L108    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 383 statements into 1 equivalence classes.
[2025-03-08 09:42:35,621 INFO  L111    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 383 of 383 statements.
[2025-03-08 09:42:35,622 INFO  L114    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s)
[2025-03-08 09:42:35,622 INFO  L115    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2025-03-08 09:42:36,246 INFO  L134       CoverageAnalysis]: Checked inductivity of 216 backedges. 185 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2025-03-08 09:42:36,246 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2025-03-08 09:42:36,246 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1162364405]
[2025-03-08 09:42:36,246 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1162364405] provided 0 perfect and 1 imperfect interpolant sequences
[2025-03-08 09:42:36,246 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2001634444]
[2025-03-08 09:42:36,246 INFO  L97    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2025-03-08 09:42:36,246 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2025-03-08 09:42:36,246 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2025-03-08 09:42:36,248 INFO  L229       MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2025-03-08 09:42:36,250 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process
[2025-03-08 09:42:36,630 INFO  L108    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 383 statements into 1 equivalence classes.
[2025-03-08 09:42:37,164 INFO  L111    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 383 of 383 statements.
[2025-03-08 09:42:37,164 INFO  L114    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s)
[2025-03-08 09:42:37,164 INFO  L115    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2025-03-08 09:42:37,176 INFO  L256         TraceCheckSpWp]: Trace formula consists of 2481 conjuncts, 45 conjuncts are in the unsatisfiable core
[2025-03-08 09:42:37,186 INFO  L279         TraceCheckSpWp]: Computing forward predicates...
[2025-03-08 09:42:38,404 INFO  L134       CoverageAnalysis]: Checked inductivity of 216 backedges. 12 proven. 196 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked.
[2025-03-08 09:42:38,404 INFO  L312         TraceCheckSpWp]: Computing backward predicates...
[2025-03-08 09:42:39,402 INFO  L134       CoverageAnalysis]: Checked inductivity of 216 backedges. 60 proven. 39 refuted. 0 times theorem prover too weak. 117 trivial. 0 not checked.
[2025-03-08 09:42:39,402 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [2001634444] provided 0 perfect and 2 imperfect interpolant sequences
[2025-03-08 09:42:39,402 INFO  L185   FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2025-03-08 09:42:39,403 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 12, 10] total 25
[2025-03-08 09:42:39,403 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1584987334]
[2025-03-08 09:42:39,403 INFO  L85    oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2025-03-08 09:42:39,403 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 25 states
[2025-03-08 09:42:39,403 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2025-03-08 09:42:39,404 INFO  L144   InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants.
[2025-03-08 09:42:39,404 INFO  L146   InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=515, Unknown=0, NotChecked=0, Total=600
[2025-03-08 09:42:39,405 INFO  L87              Difference]: Start difference. First operand 770 states and 1122 transitions. Second operand  has 25 states, 25 states have (on average 40.48) internal successors, (1012), 25 states have internal predecessors, (1012), 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 09:42:40,928 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2025-03-08 09:42:40,929 INFO  L93              Difference]: Finished difference Result 1484 states and 2163 transitions.
[2025-03-08 09:42:40,929 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. 
[2025-03-08 09:42:40,929 INFO  L78                 Accepts]: Start accepts. Automaton has  has 25 states, 25 states have (on average 40.48) internal successors, (1012), 25 states have internal predecessors, (1012), 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 383
[2025-03-08 09:42:40,930 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2025-03-08 09:42:40,932 INFO  L225             Difference]: With dead ends: 1484
[2025-03-08 09:42:40,932 INFO  L226             Difference]: Without dead ends: 792
[2025-03-08 09:42:40,933 INFO  L434           NwaCegarLoop]: 0 DeclaredPredicates, 800 GetRequests, 749 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 462 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=511, Invalid=2245, Unknown=0, NotChecked=0, Total=2756
[2025-03-08 09:42:40,934 INFO  L435           NwaCegarLoop]: 262 mSDtfsCounter, 3736 mSDsluCounter, 3073 mSDsCounter, 0 mSdLazyCounter, 3540 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3736 SdHoareTripleChecker+Valid, 3335 SdHoareTripleChecker+Invalid, 3550 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 3540 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time
[2025-03-08 09:42:40,934 INFO  L436           NwaCegarLoop]: SdHoareTripleChecker [3736 Valid, 3335 Invalid, 3550 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 3540 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time]
[2025-03-08 09:42:40,935 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 792 states.
[2025-03-08 09:42:40,942 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 792 to 771.
[2025-03-08 09:42:40,943 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 771 states, 770 states have (on average 1.4584415584415584) internal successors, (1123), 770 states have internal predecessors, (1123), 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 09:42:40,944 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 771 states to 771 states and 1123 transitions.
[2025-03-08 09:42:40,944 INFO  L78                 Accepts]: Start accepts. Automaton has 771 states and 1123 transitions. Word has length 383
[2025-03-08 09:42:40,944 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2025-03-08 09:42:40,944 INFO  L471      AbstractCegarLoop]: Abstraction has 771 states and 1123 transitions.
[2025-03-08 09:42:40,945 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 25 states, 25 states have (on average 40.48) internal successors, (1012), 25 states have internal predecessors, (1012), 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 09:42:40,945 INFO  L276                IsEmpty]: Start isEmpty. Operand 771 states and 1123 transitions.
[2025-03-08 09:42:40,947 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 385
[2025-03-08 09:42:40,947 INFO  L210           NwaCegarLoop]: Found error trace
[2025-03-08 09:42:40,947 INFO  L218           NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2025-03-08 09:42:40,963 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0
[2025-03-08 09:42:41,151 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2025-03-08 09:42:41,151 INFO  L396      AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2025-03-08 09:42:41,151 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2025-03-08 09:42:41,151 INFO  L85        PathProgramCache]: Analyzing trace with hash 372408341, now seen corresponding path program 1 times
[2025-03-08 09:42:41,151 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2025-03-08 09:42:41,152 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1912113439]
[2025-03-08 09:42:41,152 INFO  L97    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2025-03-08 09:42:41,152 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2025-03-08 09:42:41,221 INFO  L108    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 384 statements into 1 equivalence classes.
[2025-03-08 09:42:42,454 INFO  L111    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 384 of 384 statements.
[2025-03-08 09:42:42,455 INFO  L114    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s)
[2025-03-08 09:42:42,455 INFO  L115    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2025-03-08 09:42:43,117 INFO  L134       CoverageAnalysis]: Checked inductivity of 217 backedges. 191 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked.
[2025-03-08 09:42:43,118 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2025-03-08 09:42:43,118 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1912113439]
[2025-03-08 09:42:43,118 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1912113439] provided 1 perfect and 0 imperfect interpolant sequences
[2025-03-08 09:42:43,118 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2025-03-08 09:42:43,118 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8
[2025-03-08 09:42:43,118 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1224822203]
[2025-03-08 09:42:43,118 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2025-03-08 09:42:43,119 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 8 states
[2025-03-08 09:42:43,119 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2025-03-08 09:42:43,120 INFO  L144   InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2025-03-08 09:42:43,120 INFO  L146   InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56
[2025-03-08 09:42:43,120 INFO  L87              Difference]: Start difference. First operand 771 states and 1123 transitions. Second operand  has 8 states, 8 states have (on average 45.625) internal successors, (365), 8 states have internal predecessors, (365), 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 09:42:43,797 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2025-03-08 09:42:43,797 INFO  L93              Difference]: Finished difference Result 1591 states and 2317 transitions.
[2025-03-08 09:42:43,797 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. 
[2025-03-08 09:42:43,797 INFO  L78                 Accepts]: Start accepts. Automaton has  has 8 states, 8 states have (on average 45.625) internal successors, (365), 8 states have internal predecessors, (365), 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 384
[2025-03-08 09:42:43,798 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2025-03-08 09:42:43,800 INFO  L225             Difference]: With dead ends: 1591
[2025-03-08 09:42:43,800 INFO  L226             Difference]: Without dead ends: 1176
[2025-03-08 09:42:43,801 INFO  L434           NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90
[2025-03-08 09:42:43,801 INFO  L435           NwaCegarLoop]: 604 mSDtfsCounter, 1063 mSDsluCounter, 2276 mSDsCounter, 0 mSdLazyCounter, 1859 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1063 SdHoareTripleChecker+Valid, 2880 SdHoareTripleChecker+Invalid, 1860 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1859 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time
[2025-03-08 09:42:43,801 INFO  L436           NwaCegarLoop]: SdHoareTripleChecker [1063 Valid, 2880 Invalid, 1860 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1859 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time]
[2025-03-08 09:42:43,802 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 1176 states.
[2025-03-08 09:42:43,809 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 1176 to 771.
[2025-03-08 09:42:43,810 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 771 states, 770 states have (on average 1.4584415584415584) internal successors, (1123), 770 states have internal predecessors, (1123), 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 09:42:43,810 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 771 states to 771 states and 1123 transitions.
[2025-03-08 09:42:43,811 INFO  L78                 Accepts]: Start accepts. Automaton has 771 states and 1123 transitions. Word has length 384
[2025-03-08 09:42:43,811 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2025-03-08 09:42:43,811 INFO  L471      AbstractCegarLoop]: Abstraction has 771 states and 1123 transitions.
[2025-03-08 09:42:43,811 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 8 states, 8 states have (on average 45.625) internal successors, (365), 8 states have internal predecessors, (365), 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 09:42:43,811 INFO  L276                IsEmpty]: Start isEmpty. Operand 771 states and 1123 transitions.
[2025-03-08 09:42:43,813 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 386
[2025-03-08 09:42:43,813 INFO  L210           NwaCegarLoop]: Found error trace
[2025-03-08 09:42:43,813 INFO  L218           NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2025-03-08 09:42:43,813 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14
[2025-03-08 09:42:43,813 INFO  L396      AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2025-03-08 09:42:43,814 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2025-03-08 09:42:43,814 INFO  L85        PathProgramCache]: Analyzing trace with hash -1176823813, now seen corresponding path program 1 times
[2025-03-08 09:42:43,814 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2025-03-08 09:42:43,814 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [641571466]
[2025-03-08 09:42:43,814 INFO  L97    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2025-03-08 09:42:43,814 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2025-03-08 09:42:43,889 INFO  L108    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 385 statements into 1 equivalence classes.
[2025-03-08 09:42:44,485 INFO  L111    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 385 of 385 statements.
[2025-03-08 09:42:44,485 INFO  L114    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s)
[2025-03-08 09:42:44,485 INFO  L115    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2025-03-08 09:42:45,388 INFO  L134       CoverageAnalysis]: Checked inductivity of 219 backedges. 81 proven. 138 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2025-03-08 09:42:45,388 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2025-03-08 09:42:45,388 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [641571466]
[2025-03-08 09:42:45,388 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [641571466] provided 0 perfect and 1 imperfect interpolant sequences
[2025-03-08 09:42:45,388 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1733521446]
[2025-03-08 09:42:45,388 INFO  L97    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2025-03-08 09:42:45,388 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2025-03-08 09:42:45,388 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2025-03-08 09:42:45,391 INFO  L229       MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2025-03-08 09:42:45,392 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process
[2025-03-08 09:42:45,809 INFO  L108    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 385 statements into 1 equivalence classes.
[2025-03-08 09:42:46,236 INFO  L111    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 385 of 385 statements.
[2025-03-08 09:42:46,236 INFO  L114    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s)
[2025-03-08 09:42:46,236 INFO  L115    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2025-03-08 09:42:46,247 INFO  L256         TraceCheckSpWp]: Trace formula consists of 2483 conjuncts, 31 conjuncts are in the unsatisfiable core
[2025-03-08 09:42:46,253 INFO  L279         TraceCheckSpWp]: Computing forward predicates...
[2025-03-08 09:42:46,621 INFO  L134       CoverageAnalysis]: Checked inductivity of 219 backedges. 17 proven. 55 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked.
[2025-03-08 09:42:46,621 INFO  L312         TraceCheckSpWp]: Computing backward predicates...
[2025-03-08 09:42:47,210 INFO  L134       CoverageAnalysis]: Checked inductivity of 219 backedges. 60 proven. 12 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked.
[2025-03-08 09:42:47,210 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1733521446] provided 0 perfect and 2 imperfect interpolant sequences
[2025-03-08 09:42:47,210 INFO  L185   FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2025-03-08 09:42:47,210 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 10] total 25
[2025-03-08 09:42:47,211 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [171582959]
[2025-03-08 09:42:47,211 INFO  L85    oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2025-03-08 09:42:47,212 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 25 states
[2025-03-08 09:42:47,212 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2025-03-08 09:42:47,213 INFO  L144   InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants.
[2025-03-08 09:42:47,213 INFO  L146   InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=530, Unknown=0, NotChecked=0, Total=600
[2025-03-08 09:42:47,213 INFO  L87              Difference]: Start difference. First operand 771 states and 1123 transitions. Second operand  has 25 states, 25 states have (on average 33.68) internal successors, (842), 25 states have internal predecessors, (842), 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 09:42:49,807 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2025-03-08 09:42:49,807 INFO  L93              Difference]: Finished difference Result 2218 states and 3227 transitions.
[2025-03-08 09:42:49,807 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. 
[2025-03-08 09:42:49,808 INFO  L78                 Accepts]: Start accepts. Automaton has  has 25 states, 25 states have (on average 33.68) internal successors, (842), 25 states have internal predecessors, (842), 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 385
[2025-03-08 09:42:49,808 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2025-03-08 09:42:49,811 INFO  L225             Difference]: With dead ends: 2218
[2025-03-08 09:42:49,811 INFO  L226             Difference]: Without dead ends: 1514
[2025-03-08 09:42:49,813 INFO  L434           NwaCegarLoop]: 0 DeclaredPredicates, 817 GetRequests, 757 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 764 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=500, Invalid=3282, Unknown=0, NotChecked=0, Total=3782
[2025-03-08 09:42:49,813 INFO  L435           NwaCegarLoop]: 620 mSDtfsCounter, 1660 mSDsluCounter, 8884 mSDsCounter, 0 mSdLazyCounter, 6758 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1660 SdHoareTripleChecker+Valid, 9504 SdHoareTripleChecker+Invalid, 6762 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 6758 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time
[2025-03-08 09:42:49,813 INFO  L436           NwaCegarLoop]: SdHoareTripleChecker [1660 Valid, 9504 Invalid, 6762 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 6758 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time]
[2025-03-08 09:42:49,814 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 1514 states.
[2025-03-08 09:42:49,828 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 1514 to 1267.
[2025-03-08 09:42:49,829 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 1267 states, 1266 states have (on average 1.44391785150079) internal successors, (1828), 1266 states have internal predecessors, (1828), 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 09:42:49,830 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 1267 states to 1267 states and 1828 transitions.
[2025-03-08 09:42:49,831 INFO  L78                 Accepts]: Start accepts. Automaton has 1267 states and 1828 transitions. Word has length 385
[2025-03-08 09:42:49,832 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2025-03-08 09:42:49,832 INFO  L471      AbstractCegarLoop]: Abstraction has 1267 states and 1828 transitions.
[2025-03-08 09:42:49,832 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 25 states, 25 states have (on average 33.68) internal successors, (842), 25 states have internal predecessors, (842), 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 09:42:49,832 INFO  L276                IsEmpty]: Start isEmpty. Operand 1267 states and 1828 transitions.
[2025-03-08 09:42:49,834 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 387
[2025-03-08 09:42:49,834 INFO  L210           NwaCegarLoop]: Found error trace
[2025-03-08 09:42:49,835 INFO  L218           NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2025-03-08 09:42:49,850 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0
[2025-03-08 09:42:50,035 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2025-03-08 09:42:50,036 INFO  L396      AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2025-03-08 09:42:50,036 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2025-03-08 09:42:50,036 INFO  L85        PathProgramCache]: Analyzing trace with hash 333207908, now seen corresponding path program 1 times
[2025-03-08 09:42:50,036 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2025-03-08 09:42:50,036 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1631076983]
[2025-03-08 09:42:50,036 INFO  L97    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2025-03-08 09:42:50,036 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2025-03-08 09:42:50,096 INFO  L108    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 386 statements into 1 equivalence classes.
[2025-03-08 09:42:51,269 INFO  L111    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 386 of 386 statements.
[2025-03-08 09:42:51,269 INFO  L114    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s)
[2025-03-08 09:42:51,269 INFO  L115    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2025-03-08 09:42:52,165 INFO  L134       CoverageAnalysis]: Checked inductivity of 217 backedges. 88 proven. 129 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2025-03-08 09:42:52,165 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2025-03-08 09:42:52,165 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1631076983]
[2025-03-08 09:42:52,165 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1631076983] provided 0 perfect and 1 imperfect interpolant sequences
[2025-03-08 09:42:52,165 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [308098910]
[2025-03-08 09:42:52,165 INFO  L97    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2025-03-08 09:42:52,166 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2025-03-08 09:42:52,166 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2025-03-08 09:42:52,168 INFO  L229       MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2025-03-08 09:42:52,168 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process
[2025-03-08 09:42:52,621 INFO  L108    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 386 statements into 1 equivalence classes.
[2025-03-08 09:42:53,002 INFO  L111    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 386 of 386 statements.
[2025-03-08 09:42:53,002 INFO  L114    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s)
[2025-03-08 09:42:53,002 INFO  L115    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2025-03-08 09:42:53,013 INFO  L256         TraceCheckSpWp]: Trace formula consists of 2484 conjuncts, 15 conjuncts are in the unsatisfiable core
[2025-03-08 09:42:53,020 INFO  L279         TraceCheckSpWp]: Computing forward predicates...
[2025-03-08 09:42:53,670 INFO  L134       CoverageAnalysis]: Checked inductivity of 217 backedges. 88 proven. 129 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2025-03-08 09:42:53,670 INFO  L312         TraceCheckSpWp]: Computing backward predicates...
[2025-03-08 09:42:54,330 INFO  L134       CoverageAnalysis]: Checked inductivity of 217 backedges. 217 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2025-03-08 09:42:54,331 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [308098910] provided 1 perfect and 1 imperfect interpolant sequences
[2025-03-08 09:42:54,331 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences.
[2025-03-08 09:42:54,331 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8, 8] total 13
[2025-03-08 09:42:54,331 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [126813656]
[2025-03-08 09:42:54,331 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2025-03-08 09:42:54,331 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2025-03-08 09:42:54,331 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2025-03-08 09:42:54,332 INFO  L144   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2025-03-08 09:42:54,332 INFO  L146   InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156
[2025-03-08 09:42:54,332 INFO  L87              Difference]: Start difference. First operand 1267 states and 1828 transitions. Second operand  has 6 states, 6 states have (on average 64.33333333333333) internal successors, (386), 6 states have internal predecessors, (386), 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 09:42:54,732 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2025-03-08 09:42:54,732 INFO  L93              Difference]: Finished difference Result 2413 states and 3496 transitions.
[2025-03-08 09:42:54,732 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2025-03-08 09:42:54,732 INFO  L78                 Accepts]: Start accepts. Automaton has  has 6 states, 6 states have (on average 64.33333333333333) internal successors, (386), 6 states have internal predecessors, (386), 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 386
[2025-03-08 09:42:54,733 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2025-03-08 09:42:54,736 INFO  L225             Difference]: With dead ends: 2413
[2025-03-08 09:42:54,736 INFO  L226             Difference]: Without dead ends: 1626
[2025-03-08 09:42:54,737 INFO  L434           NwaCegarLoop]: 0 DeclaredPredicates, 779 GetRequests, 767 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156
[2025-03-08 09:42:54,738 INFO  L435           NwaCegarLoop]: 325 mSDtfsCounter, 1239 mSDsluCounter, 642 mSDsCounter, 0 mSdLazyCounter, 646 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1239 SdHoareTripleChecker+Valid, 967 SdHoareTripleChecker+Invalid, 648 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 646 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time
[2025-03-08 09:42:54,738 INFO  L436           NwaCegarLoop]: SdHoareTripleChecker [1239 Valid, 967 Invalid, 648 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 646 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time]
[2025-03-08 09:42:54,740 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 1626 states.
[2025-03-08 09:42:54,758 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 1626 to 1626.
[2025-03-08 09:42:54,760 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 1626 states, 1625 states have (on average 1.4455384615384614) internal successors, (2349), 1625 states have internal predecessors, (2349), 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 09:42:54,762 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 1626 states to 1626 states and 2349 transitions.
[2025-03-08 09:42:54,763 INFO  L78                 Accepts]: Start accepts. Automaton has 1626 states and 2349 transitions. Word has length 386
[2025-03-08 09:42:54,763 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2025-03-08 09:42:54,763 INFO  L471      AbstractCegarLoop]: Abstraction has 1626 states and 2349 transitions.
[2025-03-08 09:42:54,764 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 6 states, 6 states have (on average 64.33333333333333) internal successors, (386), 6 states have internal predecessors, (386), 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 09:42:54,764 INFO  L276                IsEmpty]: Start isEmpty. Operand 1626 states and 2349 transitions.
[2025-03-08 09:42:54,768 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 388
[2025-03-08 09:42:54,768 INFO  L210           NwaCegarLoop]: Found error trace
[2025-03-08 09:42:54,768 INFO  L218           NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2025-03-08 09:42:54,783 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0
[2025-03-08 09:42:54,973 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16
[2025-03-08 09:42:54,973 INFO  L396      AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2025-03-08 09:42:54,973 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2025-03-08 09:42:54,973 INFO  L85        PathProgramCache]: Analyzing trace with hash 1533863902, now seen corresponding path program 1 times
[2025-03-08 09:42:54,974 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2025-03-08 09:42:54,974 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [548389025]
[2025-03-08 09:42:54,974 INFO  L97    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2025-03-08 09:42:54,974 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2025-03-08 09:42:55,057 INFO  L108    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 387 statements into 1 equivalence classes.
[2025-03-08 09:42:56,264 INFO  L111    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 387 of 387 statements.
[2025-03-08 09:42:56,264 INFO  L114    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s)
[2025-03-08 09:42:56,264 INFO  L115    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2025-03-08 09:42:58,876 INFO  L134       CoverageAnalysis]: Checked inductivity of 219 backedges. 145 proven. 10 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked.
[2025-03-08 09:42:58,876 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2025-03-08 09:42:58,876 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [548389025]
[2025-03-08 09:42:58,876 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [548389025] provided 0 perfect and 1 imperfect interpolant sequences
[2025-03-08 09:42:58,876 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1770116023]
[2025-03-08 09:42:58,877 INFO  L97    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2025-03-08 09:42:58,877 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2025-03-08 09:42:58,877 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2025-03-08 09:42:58,879 INFO  L229       MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2025-03-08 09:42:58,880 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process
[2025-03-08 09:42:59,359 INFO  L108    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 387 statements into 1 equivalence classes.
[2025-03-08 09:43:00,243 INFO  L111    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 387 of 387 statements.
[2025-03-08 09:43:00,244 INFO  L114    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s)
[2025-03-08 09:43:00,244 INFO  L115    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2025-03-08 09:43:00,255 INFO  L256         TraceCheckSpWp]: Trace formula consists of 2485 conjuncts, 30 conjuncts are in the unsatisfiable core
[2025-03-08 09:43:00,268 INFO  L279         TraceCheckSpWp]: Computing forward predicates...
[2025-03-08 09:43:00,436 INFO  L134       CoverageAnalysis]: Checked inductivity of 219 backedges. 66 proven. 0 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked.
[2025-03-08 09:43:00,437 INFO  L308         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2025-03-08 09:43:00,437 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1770116023] provided 1 perfect and 0 imperfect interpolant sequences
[2025-03-08 09:43:00,437 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2025-03-08 09:43:00,437 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [14] total 20
[2025-03-08 09:43:00,437 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2094969946]
[2025-03-08 09:43:00,437 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2025-03-08 09:43:00,437 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 8 states
[2025-03-08 09:43:00,437 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2025-03-08 09:43:00,437 INFO  L144   InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2025-03-08 09:43:00,438 INFO  L146   InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=327, Unknown=0, NotChecked=0, Total=380
[2025-03-08 09:43:00,438 INFO  L87              Difference]: Start difference. First operand 1626 states and 2349 transitions. Second operand  has 8 states, 8 states have (on average 30.25) internal successors, (242), 8 states have internal predecessors, (242), 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 09:43:00,866 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2025-03-08 09:43:00,866 INFO  L93              Difference]: Finished difference Result 3653 states and 5311 transitions.
[2025-03-08 09:43:00,867 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. 
[2025-03-08 09:43:00,867 INFO  L78                 Accepts]: Start accepts. Automaton has  has 8 states, 8 states have (on average 30.25) internal successors, (242), 8 states have internal predecessors, (242), 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 387
[2025-03-08 09:43:00,867 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2025-03-08 09:43:00,871 INFO  L225             Difference]: With dead ends: 3653
[2025-03-08 09:43:00,871 INFO  L226             Difference]: Without dead ends: 2138
[2025-03-08 09:43:00,872 INFO  L434           NwaCegarLoop]: 0 DeclaredPredicates, 405 GetRequests, 382 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 102 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=77, Invalid=475, Unknown=0, NotChecked=0, Total=552
[2025-03-08 09:43:00,873 INFO  L435           NwaCegarLoop]: 426 mSDtfsCounter, 1160 mSDsluCounter, 1271 mSDsCounter, 0 mSdLazyCounter, 1165 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1160 SdHoareTripleChecker+Valid, 1697 SdHoareTripleChecker+Invalid, 1166 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1165 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time
[2025-03-08 09:43:00,873 INFO  L436           NwaCegarLoop]: SdHoareTripleChecker [1160 Valid, 1697 Invalid, 1166 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1165 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time]
[2025-03-08 09:43:00,874 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 2138 states.
[2025-03-08 09:43:00,886 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 2138 to 1646.
[2025-03-08 09:43:00,887 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 1646 states, 1645 states have (on average 1.4425531914893617) internal successors, (2373), 1645 states have internal predecessors, (2373), 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 09:43:00,889 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 1646 states to 1646 states and 2373 transitions.
[2025-03-08 09:43:00,889 INFO  L78                 Accepts]: Start accepts. Automaton has 1646 states and 2373 transitions. Word has length 387
[2025-03-08 09:43:00,889 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2025-03-08 09:43:00,889 INFO  L471      AbstractCegarLoop]: Abstraction has 1646 states and 2373 transitions.
[2025-03-08 09:43:00,889 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 8 states, 8 states have (on average 30.25) internal successors, (242), 8 states have internal predecessors, (242), 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 09:43:00,890 INFO  L276                IsEmpty]: Start isEmpty. Operand 1646 states and 2373 transitions.
[2025-03-08 09:43:00,892 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 390
[2025-03-08 09:43:00,892 INFO  L210           NwaCegarLoop]: Found error trace
[2025-03-08 09:43:00,892 INFO  L218           NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2025-03-08 09:43:00,906 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0
[2025-03-08 09:43:01,093 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17
[2025-03-08 09:43:01,093 INFO  L396      AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2025-03-08 09:43:01,093 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2025-03-08 09:43:01,093 INFO  L85        PathProgramCache]: Analyzing trace with hash -963961218, now seen corresponding path program 1 times
[2025-03-08 09:43:01,093 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2025-03-08 09:43:01,094 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1834176817]
[2025-03-08 09:43:01,094 INFO  L97    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2025-03-08 09:43:01,094 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2025-03-08 09:43:01,149 INFO  L108    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 389 statements into 1 equivalence classes.
[2025-03-08 09:43:02,754 INFO  L111    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 389 of 389 statements.
[2025-03-08 09:43:02,755 INFO  L114    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s)
[2025-03-08 09:43:02,755 INFO  L115    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2025-03-08 09:43:05,279 INFO  L134       CoverageAnalysis]: Checked inductivity of 220 backedges. 145 proven. 10 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked.
[2025-03-08 09:43:05,279 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2025-03-08 09:43:05,279 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1834176817]
[2025-03-08 09:43:05,279 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1834176817] provided 0 perfect and 1 imperfect interpolant sequences
[2025-03-08 09:43:05,279 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1433659444]
[2025-03-08 09:43:05,280 INFO  L97    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2025-03-08 09:43:05,280 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2025-03-08 09:43:05,280 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2025-03-08 09:43:05,281 INFO  L229       MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2025-03-08 09:43:05,282 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process
[2025-03-08 09:43:05,808 INFO  L108    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 389 statements into 1 equivalence classes.
[2025-03-08 09:43:06,468 INFO  L111    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 389 of 389 statements.
[2025-03-08 09:43:06,468 INFO  L114    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s)
[2025-03-08 09:43:06,468 INFO  L115    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2025-03-08 09:43:06,480 INFO  L256         TraceCheckSpWp]: Trace formula consists of 2491 conjuncts, 64 conjuncts are in the unsatisfiable core
[2025-03-08 09:43:06,486 INFO  L279         TraceCheckSpWp]: Computing forward predicates...
[2025-03-08 09:43:07,238 INFO  L134       CoverageAnalysis]: Checked inductivity of 220 backedges. 154 proven. 31 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked.
[2025-03-08 09:43:07,238 INFO  L312         TraceCheckSpWp]: Computing backward predicates...
[2025-03-08 09:43:08,816 INFO  L134       CoverageAnalysis]: Checked inductivity of 220 backedges. 140 proven. 75 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked.
[2025-03-08 09:43:08,816 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1433659444] provided 0 perfect and 2 imperfect interpolant sequences
[2025-03-08 09:43:08,816 INFO  L185   FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2025-03-08 09:43:08,816 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 8, 18] total 36
[2025-03-08 09:43:08,816 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [722508470]
[2025-03-08 09:43:08,816 INFO  L85    oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2025-03-08 09:43:08,817 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 36 states
[2025-03-08 09:43:08,817 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2025-03-08 09:43:08,818 INFO  L144   InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants.
[2025-03-08 09:43:08,818 INFO  L146   InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=1137, Unknown=0, NotChecked=0, Total=1260
[2025-03-08 09:43:08,818 INFO  L87              Difference]: Start difference. First operand 1646 states and 2373 transitions. Second operand  has 36 states, 36 states have (on average 29.25) internal successors, (1053), 36 states have internal predecessors, (1053), 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 09:43:12,441 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2025-03-08 09:43:12,441 INFO  L93              Difference]: Finished difference Result 5321 states and 7699 transitions.
[2025-03-08 09:43:12,442 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. 
[2025-03-08 09:43:12,442 INFO  L78                 Accepts]: Start accepts. Automaton has  has 36 states, 36 states have (on average 29.25) internal successors, (1053), 36 states have internal predecessors, (1053), 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 389
[2025-03-08 09:43:12,442 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2025-03-08 09:43:12,450 INFO  L225             Difference]: With dead ends: 5321
[2025-03-08 09:43:12,450 INFO  L226             Difference]: Without dead ends: 3847
[2025-03-08 09:43:12,452 INFO  L434           NwaCegarLoop]: 0 DeclaredPredicates, 830 GetRequests, 756 SyntacticMatches, 1 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 937 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=543, Invalid=5007, Unknown=0, NotChecked=0, Total=5550
[2025-03-08 09:43:12,452 INFO  L435           NwaCegarLoop]: 356 mSDtfsCounter, 1864 mSDsluCounter, 9273 mSDsCounter, 0 mSdLazyCounter, 8696 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1864 SdHoareTripleChecker+Valid, 9629 SdHoareTripleChecker+Invalid, 8709 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 8696 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time
[2025-03-08 09:43:12,452 INFO  L436           NwaCegarLoop]: SdHoareTripleChecker [1864 Valid, 9629 Invalid, 8709 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 8696 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time]
[2025-03-08 09:43:12,454 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 3847 states.
[2025-03-08 09:43:12,476 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 3847 to 2989.
[2025-03-08 09:43:12,479 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 2989 states, 2988 states have (on average 1.4464524765729585) internal successors, (4322), 2988 states have internal predecessors, (4322), 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 09:43:12,482 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 2989 states to 2989 states and 4322 transitions.
[2025-03-08 09:43:12,482 INFO  L78                 Accepts]: Start accepts. Automaton has 2989 states and 4322 transitions. Word has length 389
[2025-03-08 09:43:12,482 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2025-03-08 09:43:12,482 INFO  L471      AbstractCegarLoop]: Abstraction has 2989 states and 4322 transitions.
[2025-03-08 09:43:12,483 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 36 states, 36 states have (on average 29.25) internal successors, (1053), 36 states have internal predecessors, (1053), 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 09:43:12,483 INFO  L276                IsEmpty]: Start isEmpty. Operand 2989 states and 4322 transitions.
[2025-03-08 09:43:12,487 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 390
[2025-03-08 09:43:12,487 INFO  L210           NwaCegarLoop]: Found error trace
[2025-03-08 09:43:12,488 INFO  L218           NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2025-03-08 09:43:12,503 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0
[2025-03-08 09:43:12,688 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2025-03-08 09:43:12,688 INFO  L396      AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2025-03-08 09:43:12,689 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2025-03-08 09:43:12,689 INFO  L85        PathProgramCache]: Analyzing trace with hash 542891714, now seen corresponding path program 1 times
[2025-03-08 09:43:12,689 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2025-03-08 09:43:12,689 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [400418165]
[2025-03-08 09:43:12,689 INFO  L97    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2025-03-08 09:43:12,689 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2025-03-08 09:43:12,750 INFO  L108    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 389 statements into 1 equivalence classes.
[2025-03-08 09:43:13,594 INFO  L111    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 389 of 389 statements.
[2025-03-08 09:43:13,594 INFO  L114    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s)
[2025-03-08 09:43:13,594 INFO  L115    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2025-03-08 09:43:14,517 INFO  L134       CoverageAnalysis]: Checked inductivity of 220 backedges. 26 proven. 10 refuted. 0 times theorem prover too weak. 184 trivial. 0 not checked.
[2025-03-08 09:43:14,517 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2025-03-08 09:43:14,517 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [400418165]
[2025-03-08 09:43:14,517 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [400418165] provided 0 perfect and 1 imperfect interpolant sequences
[2025-03-08 09:43:14,517 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1527089107]
[2025-03-08 09:43:14,517 INFO  L97    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2025-03-08 09:43:14,517 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2025-03-08 09:43:14,517 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2025-03-08 09:43:14,519 INFO  L229       MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2025-03-08 09:43:14,520 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process
[2025-03-08 09:43:15,043 INFO  L108    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 389 statements into 1 equivalence classes.
[2025-03-08 09:43:15,504 INFO  L111    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 389 of 389 statements.
[2025-03-08 09:43:15,504 INFO  L114    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s)
[2025-03-08 09:43:15,504 INFO  L115    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2025-03-08 09:43:15,516 INFO  L256         TraceCheckSpWp]: Trace formula consists of 2493 conjuncts, 35 conjuncts are in the unsatisfiable core
[2025-03-08 09:43:15,522 INFO  L279         TraceCheckSpWp]: Computing forward predicates...
[2025-03-08 09:43:15,810 INFO  L134       CoverageAnalysis]: Checked inductivity of 220 backedges. 25 proven. 51 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked.
[2025-03-08 09:43:15,810 INFO  L312         TraceCheckSpWp]: Computing backward predicates...
[2025-03-08 09:43:16,295 INFO  L134       CoverageAnalysis]: Checked inductivity of 220 backedges. 62 proven. 14 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked.
[2025-03-08 09:43:16,295 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1527089107] provided 0 perfect and 2 imperfect interpolant sequences
[2025-03-08 09:43:16,295 INFO  L185   FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2025-03-08 09:43:16,296 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 10] total 18
[2025-03-08 09:43:16,296 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1841194385]
[2025-03-08 09:43:16,296 INFO  L85    oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2025-03-08 09:43:16,296 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 18 states
[2025-03-08 09:43:16,296 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2025-03-08 09:43:16,297 INFO  L144   InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants.
[2025-03-08 09:43:16,297 INFO  L146   InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=257, Unknown=0, NotChecked=0, Total=306
[2025-03-08 09:43:16,297 INFO  L87              Difference]: Start difference. First operand 2989 states and 4322 transitions. Second operand  has 18 states, 18 states have (on average 28.11111111111111) internal successors, (506), 18 states have internal predecessors, (506), 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 09:43:16,889 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2025-03-08 09:43:16,889 INFO  L93              Difference]: Finished difference Result 6106 states and 8848 transitions.
[2025-03-08 09:43:16,889 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. 
[2025-03-08 09:43:16,890 INFO  L78                 Accepts]: Start accepts. Automaton has  has 18 states, 18 states have (on average 28.11111111111111) internal successors, (506), 18 states have internal predecessors, (506), 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 389
[2025-03-08 09:43:16,891 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2025-03-08 09:43:16,899 INFO  L225             Difference]: With dead ends: 6106
[2025-03-08 09:43:16,899 INFO  L226             Difference]: Without dead ends: 3176
[2025-03-08 09:43:16,902 INFO  L434           NwaCegarLoop]: 0 DeclaredPredicates, 791 GetRequests, 769 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=97, Invalid=455, Unknown=0, NotChecked=0, Total=552
[2025-03-08 09:43:16,903 INFO  L435           NwaCegarLoop]: 318 mSDtfsCounter, 845 mSDsluCounter, 2206 mSDsCounter, 0 mSdLazyCounter, 1756 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 845 SdHoareTripleChecker+Valid, 2524 SdHoareTripleChecker+Invalid, 1758 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1756 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time
[2025-03-08 09:43:16,905 INFO  L436           NwaCegarLoop]: SdHoareTripleChecker [845 Valid, 2524 Invalid, 1758 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1756 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time]
[2025-03-08 09:43:16,906 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 3176 states.
[2025-03-08 09:43:16,972 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 3176 to 3172.
[2025-03-08 09:43:16,976 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 3172 states, 3171 states have (on average 1.4367707347839798) internal successors, (4556), 3171 states have internal predecessors, (4556), 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 09:43:16,979 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 3172 states to 3172 states and 4556 transitions.
[2025-03-08 09:43:16,979 INFO  L78                 Accepts]: Start accepts. Automaton has 3172 states and 4556 transitions. Word has length 389
[2025-03-08 09:43:16,980 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2025-03-08 09:43:16,980 INFO  L471      AbstractCegarLoop]: Abstraction has 3172 states and 4556 transitions.
[2025-03-08 09:43:16,980 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 18 states, 18 states have (on average 28.11111111111111) internal successors, (506), 18 states have internal predecessors, (506), 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 09:43:16,980 INFO  L276                IsEmpty]: Start isEmpty. Operand 3172 states and 4556 transitions.
[2025-03-08 09:43:16,985 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 390
[2025-03-08 09:43:16,985 INFO  L210           NwaCegarLoop]: Found error trace
[2025-03-08 09:43:16,985 INFO  L218           NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2025-03-08 09:43:16,999 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0
[2025-03-08 09:43:17,185 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2025-03-08 09:43:17,186 INFO  L396      AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2025-03-08 09:43:17,187 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2025-03-08 09:43:17,187 INFO  L85        PathProgramCache]: Analyzing trace with hash 934598311, now seen corresponding path program 1 times
[2025-03-08 09:43:17,187 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2025-03-08 09:43:17,187 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [676945228]
[2025-03-08 09:43:17,187 INFO  L97    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2025-03-08 09:43:17,187 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2025-03-08 09:43:17,239 INFO  L108    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 389 statements into 1 equivalence classes.
[2025-03-08 09:43:17,660 INFO  L111    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 389 of 389 statements.
[2025-03-08 09:43:17,660 INFO  L114    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s)
[2025-03-08 09:43:17,660 INFO  L115    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2025-03-08 09:43:18,724 INFO  L134       CoverageAnalysis]: Checked inductivity of 220 backedges. 16 proven. 12 refuted. 0 times theorem prover too weak. 192 trivial. 0 not checked.
[2025-03-08 09:43:18,725 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2025-03-08 09:43:18,725 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [676945228]
[2025-03-08 09:43:18,725 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [676945228] provided 0 perfect and 1 imperfect interpolant sequences
[2025-03-08 09:43:18,725 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1878679518]
[2025-03-08 09:43:18,725 INFO  L97    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2025-03-08 09:43:18,725 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2025-03-08 09:43:18,725 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2025-03-08 09:43:18,726 INFO  L229       MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2025-03-08 09:43:18,727 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process
[2025-03-08 09:43:19,282 INFO  L108    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 389 statements into 1 equivalence classes.
[2025-03-08 09:43:19,660 INFO  L111    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 389 of 389 statements.
[2025-03-08 09:43:19,660 INFO  L114    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s)
[2025-03-08 09:43:19,661 INFO  L115    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2025-03-08 09:43:19,671 INFO  L256         TraceCheckSpWp]: Trace formula consists of 2493 conjuncts, 63 conjuncts are in the unsatisfiable core
[2025-03-08 09:43:19,678 INFO  L279         TraceCheckSpWp]: Computing forward predicates...
[2025-03-08 09:43:20,644 INFO  L134       CoverageAnalysis]: Checked inductivity of 220 backedges. 16 proven. 194 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked.
[2025-03-08 09:43:20,644 INFO  L312         TraceCheckSpWp]: Computing backward predicates...
[2025-03-08 09:43:21,365 INFO  L134       CoverageAnalysis]: Checked inductivity of 220 backedges. 60 proven. 12 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked.
[2025-03-08 09:43:21,365 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1878679518] provided 0 perfect and 2 imperfect interpolant sequences
[2025-03-08 09:43:21,365 INFO  L185   FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2025-03-08 09:43:21,365 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 14, 10] total 25
[2025-03-08 09:43:21,365 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [537163603]
[2025-03-08 09:43:21,365 INFO  L85    oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2025-03-08 09:43:21,366 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 25 states
[2025-03-08 09:43:21,366 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2025-03-08 09:43:21,367 INFO  L144   InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants.
[2025-03-08 09:43:21,367 INFO  L146   InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=513, Unknown=0, NotChecked=0, Total=600
[2025-03-08 09:43:21,367 INFO  L87              Difference]: Start difference. First operand 3172 states and 4556 transitions. Second operand  has 25 states, 25 states have (on average 32.48) internal successors, (812), 25 states have internal predecessors, (812), 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 09:43:22,736 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2025-03-08 09:43:22,736 INFO  L93              Difference]: Finished difference Result 6430 states and 9232 transitions.
[2025-03-08 09:43:22,736 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. 
[2025-03-08 09:43:22,737 INFO  L78                 Accepts]: Start accepts. Automaton has  has 25 states, 25 states have (on average 32.48) internal successors, (812), 25 states have internal predecessors, (812), 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 389
[2025-03-08 09:43:22,737 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2025-03-08 09:43:22,753 INFO  L225             Difference]: With dead ends: 6430
[2025-03-08 09:43:22,753 INFO  L226             Difference]: Without dead ends: 3345
[2025-03-08 09:43:22,756 INFO  L434           NwaCegarLoop]: 0 DeclaredPredicates, 798 GetRequests, 760 SyntacticMatches, 2 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 267 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=222, Invalid=1184, Unknown=0, NotChecked=0, Total=1406
[2025-03-08 09:43:22,756 INFO  L435           NwaCegarLoop]: 273 mSDtfsCounter, 1551 mSDsluCounter, 4053 mSDsCounter, 0 mSdLazyCounter, 4243 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1551 SdHoareTripleChecker+Valid, 4326 SdHoareTripleChecker+Invalid, 4249 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 4243 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time
[2025-03-08 09:43:22,756 INFO  L436           NwaCegarLoop]: SdHoareTripleChecker [1551 Valid, 4326 Invalid, 4249 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 4243 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time]
[2025-03-08 09:43:22,758 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 3345 states.
[2025-03-08 09:43:22,776 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 3345 to 3172.
[2025-03-08 09:43:22,778 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 3172 states, 3171 states have (on average 1.4367707347839798) internal successors, (4556), 3171 states have internal predecessors, (4556), 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 09:43:22,780 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 3172 states to 3172 states and 4556 transitions.
[2025-03-08 09:43:22,781 INFO  L78                 Accepts]: Start accepts. Automaton has 3172 states and 4556 transitions. Word has length 389
[2025-03-08 09:43:22,781 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2025-03-08 09:43:22,781 INFO  L471      AbstractCegarLoop]: Abstraction has 3172 states and 4556 transitions.
[2025-03-08 09:43:22,781 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 25 states, 25 states have (on average 32.48) internal successors, (812), 25 states have internal predecessors, (812), 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 09:43:22,781 INFO  L276                IsEmpty]: Start isEmpty. Operand 3172 states and 4556 transitions.
[2025-03-08 09:43:22,786 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 391
[2025-03-08 09:43:22,786 INFO  L210           NwaCegarLoop]: Found error trace
[2025-03-08 09:43:22,786 INFO  L218           NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2025-03-08 09:43:22,801 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0
[2025-03-08 09:43:22,986 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20
[2025-03-08 09:43:22,986 INFO  L396      AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2025-03-08 09:43:22,987 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2025-03-08 09:43:22,987 INFO  L85        PathProgramCache]: Analyzing trace with hash 143380441, now seen corresponding path program 1 times
[2025-03-08 09:43:22,987 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2025-03-08 09:43:22,987 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [645377087]
[2025-03-08 09:43:22,987 INFO  L97    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2025-03-08 09:43:22,987 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2025-03-08 09:43:23,044 INFO  L108    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 390 statements into 1 equivalence classes.
[2025-03-08 09:43:24,844 INFO  L111    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 390 of 390 statements.
[2025-03-08 09:43:24,844 INFO  L114    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s)
[2025-03-08 09:43:24,844 INFO  L115    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2025-03-08 09:43:26,231 INFO  L134       CoverageAnalysis]: Checked inductivity of 220 backedges. 218 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2025-03-08 09:43:26,232 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2025-03-08 09:43:26,232 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [645377087]
[2025-03-08 09:43:26,232 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [645377087] provided 0 perfect and 1 imperfect interpolant sequences
[2025-03-08 09:43:26,232 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1923129073]
[2025-03-08 09:43:26,232 INFO  L97    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2025-03-08 09:43:26,232 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2025-03-08 09:43:26,232 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2025-03-08 09:43:26,234 INFO  L229       MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2025-03-08 09:43:26,234 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process
[2025-03-08 09:43:26,832 INFO  L108    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 390 statements into 1 equivalence classes.