/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation true -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.leader_election.1.prop1-back-serstep.c


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


This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m
[2023-12-25 19:16:56,727 INFO  L188        SettingsManager]: Resetting all preferences to default values...
[2023-12-25 19:16:56,766 INFO  L114        SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf
[2023-12-25 19:16:56,770 WARN  L101        SettingsManager]: Preference file contains the following unknown settings:
[2023-12-25 19:16:56,770 WARN  L103        SettingsManager]:   * de.uni_freiburg.informatik.ultimate.core.Log level for class
[2023-12-25 19:16:56,784 INFO  L130        SettingsManager]: Preferences different from defaults after loading the file:
[2023-12-25 19:16:56,784 INFO  L151        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2023-12-25 19:16:56,784 INFO  L153        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2023-12-25 19:16:56,785 INFO  L151        SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults:
[2023-12-25 19:16:56,785 INFO  L153        SettingsManager]:  * Use memory slicer=true
[2023-12-25 19:16:56,785 INFO  L151        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2023-12-25 19:16:56,785 INFO  L153        SettingsManager]:  * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2023-12-25 19:16:56,786 INFO  L151        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2023-12-25 19:16:56,786 INFO  L153        SettingsManager]:  * Create parallel compositions if possible=false
[2023-12-25 19:16:56,786 INFO  L153        SettingsManager]:  * Use SBE=true
[2023-12-25 19:16:56,787 INFO  L151        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2023-12-25 19:16:56,787 INFO  L153        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2023-12-25 19:16:56,787 INFO  L153        SettingsManager]:  * Overapproximate operations on floating types=true
[2023-12-25 19:16:56,787 INFO  L153        SettingsManager]:  * Check division by zero=IGNORE
[2023-12-25 19:16:56,787 INFO  L153        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2023-12-25 19:16:56,788 INFO  L153        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2023-12-25 19:16:56,788 INFO  L153        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2023-12-25 19:16:56,788 INFO  L153        SettingsManager]:  * Allow undefined functions=false
[2023-12-25 19:16:56,789 INFO  L153        SettingsManager]:  * Check if freed pointer was valid=false
[2023-12-25 19:16:56,799 INFO  L153        SettingsManager]:  * Use constant arrays=true
[2023-12-25 19:16:56,799 INFO  L151        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2023-12-25 19:16:56,799 INFO  L153        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2023-12-25 19:16:56,799 INFO  L153        SettingsManager]:  * Only consider context switches at boundaries of atomic blocks=true
[2023-12-25 19:16:56,799 INFO  L153        SettingsManager]:  * SMT solver=External_DefaultMode
[2023-12-25 19:16:56,800 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2023-12-25 19:16:56,800 INFO  L151        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2023-12-25 19:16:56,800 INFO  L153        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2023-12-25 19:16:56,800 INFO  L153        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopHeads
[2023-12-25 19:16:56,800 INFO  L153        SettingsManager]:  * Trace refinement strategy=CAMEL
[2023-12-25 19:16:56,800 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2023-12-25 19:16:56,801 INFO  L153        SettingsManager]:  * Apply one-shot large block encoding in concurrent analysis=false
[2023-12-25 19:16:56,801 INFO  L153        SettingsManager]:  * Automaton type used in concurrency analysis=PETRI_NET
[2023-12-25 19:16:56,801 INFO  L153        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2023-12-25 19:16:56,801 INFO  L153        SettingsManager]:  * Order on configurations for Petri net unfoldings=DBO
[2023-12-25 19:16:56,801 INFO  L153        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2023-12-25 19:16:56,801 INFO  L153        SettingsManager]:  * Looper check in Petri net analysis=SEMANTIC
WARNING: An illegal reflective access operation has occurred
WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int)
WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true
[2023-12-25 19:16:56,990 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2023-12-25 19:16:57,016 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2023-12-25 19:16:57,018 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2023-12-25 19:16:57,019 INFO  L270        PluginConnector]: Initializing CDTParser...
[2023-12-25 19:16:57,020 INFO  L274        PluginConnector]: CDTParser initialized
[2023-12-25 19:16:57,021 INFO  L431   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.leader_election.1.prop1-back-serstep.c
[2023-12-25 19:16:58,074 INFO  L533              CDTParser]: Created temporary CDT project at NULL
[2023-12-25 19:16:58,396 INFO  L384              CDTParser]: Found 1 translation units.
[2023-12-25 19:16:58,396 INFO  L180              CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.leader_election.1.prop1-back-serstep.c
[2023-12-25 19:16:58,431 INFO  L427              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3649c568a/76e66444dea64574a4d3f8dcd798b171/FLAGb900d3523
[2023-12-25 19:16:58,443 INFO  L435              CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3649c568a/76e66444dea64574a4d3f8dcd798b171
[2023-12-25 19:16:58,445 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2023-12-25 19:16:58,447 INFO  L133        ToolchainWalker]: Walking toolchain with 5 elements.
[2023-12-25 19:16:58,448 INFO  L112        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2023-12-25 19:16:58,448 INFO  L270        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2023-12-25 19:16:58,451 INFO  L274        PluginConnector]: CACSL2BoogieTranslator initialized
[2023-12-25 19:16:58,452 INFO  L184        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.12 07:16:58" (1/1) ...
[2023-12-25 19:16:58,453 INFO  L204        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@593fd630 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 07:16:58, skipping insertion in model container
[2023-12-25 19:16:58,453 INFO  L184        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.12 07:16:58" (1/1) ...
[2023-12-25 19:16:58,606 INFO  L177         MainTranslator]: Built tables and reachable declarations
[2023-12-25 19:16:58,803 WARN  L239   ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.leader_election.1.prop1-back-serstep.c[1183,1196]
[2023-12-25 19:16:59,628 INFO  L209          PostProcessor]: Analyzing one entry point: main
[2023-12-25 19:16:59,635 INFO  L202         MainTranslator]: Completed pre-run
[2023-12-25 19:16:59,643 WARN  L239   ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.leader_election.1.prop1-back-serstep.c[1183,1196]
[2023-12-25 19:17:00,209 INFO  L209          PostProcessor]: Analyzing one entry point: main
[2023-12-25 19:17:00,222 INFO  L206         MainTranslator]: Completed translation
[2023-12-25 19:17:00,223 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 07:17:00 WrapperNode
[2023-12-25 19:17:00,224 INFO  L131        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2023-12-25 19:17:00,225 INFO  L112        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2023-12-25 19:17:00,225 INFO  L270        PluginConnector]: Initializing Boogie Procedure Inliner...
[2023-12-25 19:17:00,226 INFO  L274        PluginConnector]: Boogie Procedure Inliner initialized
[2023-12-25 19:17:00,231 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 07:17:00" (1/1) ...
[2023-12-25 19:17:00,523 INFO  L184        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 07:17:00" (1/1) ...
[2023-12-25 19:17:03,692 INFO  L138                Inliner]: procedures = 17, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 43345
[2023-12-25 19:17:03,692 INFO  L131        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2023-12-25 19:17:03,692 INFO  L112        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2023-12-25 19:17:03,693 INFO  L270        PluginConnector]: Initializing Boogie Preprocessor...
[2023-12-25 19:17:03,693 INFO  L274        PluginConnector]: Boogie Preprocessor initialized
[2023-12-25 19:17:03,700 INFO  L184        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 07:17:00" (1/1) ...
[2023-12-25 19:17:03,700 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 07:17:00" (1/1) ...
[2023-12-25 19:17:04,653 INFO  L184        PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 07:17:00" (1/1) ...
[2023-12-25 19:17:05,083 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].
[2023-12-25 19:17:05,083 INFO  L184        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 07:17:00" (1/1) ...
[2023-12-25 19:17:05,083 INFO  L184        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 07:17:00" (1/1) ...
[2023-12-25 19:17:06,230 INFO  L184        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 07:17:00" (1/1) ...
[2023-12-25 19:17:06,364 INFO  L184        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 07:17:00" (1/1) ...
[2023-12-25 19:17:06,520 INFO  L184        PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 07:17:00" (1/1) ...
[2023-12-25 19:17:06,640 INFO  L184        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 07:17:00" (1/1) ...
[2023-12-25 19:17:07,335 INFO  L131        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2023-12-25 19:17:07,336 INFO  L112        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2023-12-25 19:17:07,336 INFO  L270        PluginConnector]: Initializing RCFGBuilder...
[2023-12-25 19:17:07,336 INFO  L274        PluginConnector]: RCFGBuilder initialized
[2023-12-25 19:17:07,337 INFO  L184        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 07:17:00" (1/1) ...
[2023-12-25 19:17:07,341 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2023-12-25 19:17:07,358 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 19:17:07,388 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)
[2023-12-25 19:17:07,390 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
[2023-12-25 19:17:07,410 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2023-12-25 19:17:07,410 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int#0
[2023-12-25 19:17:07,410 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2023-12-25 19:17:07,410 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2023-12-25 19:17:08,873 INFO  L241             CfgBuilder]: Building ICFG
[2023-12-25 19:17:08,875 INFO  L267             CfgBuilder]: Building CFG for each procedure with an implementation
[2023-12-25 19:17:23,543 INFO  L282             CfgBuilder]: Performing block encoding
[2023-12-25 19:17:24,275 INFO  L304             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2023-12-25 19:17:24,275 INFO  L309             CfgBuilder]: Removed 1 assume(true) statements.
[2023-12-25 19:17:24,275 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.12 07:17:24 BoogieIcfgContainer
[2023-12-25 19:17:24,275 INFO  L131        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2023-12-25 19:17:24,277 INFO  L112        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2023-12-25 19:17:24,277 INFO  L270        PluginConnector]: Initializing TraceAbstraction...
[2023-12-25 19:17:24,279 INFO  L274        PluginConnector]: TraceAbstraction initialized
[2023-12-25 19:17:24,280 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.12 07:16:58" (1/3) ...
[2023-12-25 19:17:24,280 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@666fc440 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.12 07:17:24, skipping insertion in model container
[2023-12-25 19:17:24,280 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 07:17:00" (2/3) ...
[2023-12-25 19:17:24,280 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@666fc440 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.12 07:17:24, skipping insertion in model container
[2023-12-25 19:17:24,280 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.12 07:17:24" (3/3) ...
[2023-12-25 19:17:24,281 INFO  L112   eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.leader_election.1.prop1-back-serstep.c
[2023-12-25 19:17:24,294 INFO  L204   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2023-12-25 19:17:24,294 INFO  L163   ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2023-12-25 19:17:24,422 INFO  L356      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2023-12-25 19:17:24,428 INFO  L357      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, mHoare=true, 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;@55e7501a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2023-12-25 19:17:24,428 INFO  L358      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2023-12-25 19:17:24,450 INFO  L276                IsEmpty]: Start isEmpty. Operand  has 9449 states, 9447 states have (on average 1.6687837408701176) internal successors, (15765), 9448 states have internal predecessors, (15765), 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)
[2023-12-25 19:17:24,492 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1087
[2023-12-25 19:17:24,493 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 19:17:24,494 INFO  L195           NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-12-25 19:17:24,495 INFO  L420      AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 19:17:24,499 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 19:17:24,500 INFO  L85        PathProgramCache]: Analyzing trace with hash 937681214, now seen corresponding path program 1 times
[2023-12-25 19:17:24,507 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 19:17:24,508 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1626494584]
[2023-12-25 19:17:24,508 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 19:17:24,509 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 19:17:25,528 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 19:17:28,247 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-25 19:17:28,247 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 19:17:28,248 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1626494584]
[2023-12-25 19:17:28,248 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1626494584] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 19:17:28,248 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 19:17:28,248 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-12-25 19:17:28,249 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1422468696]
[2023-12-25 19:17:28,250 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 19:17:28,255 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-12-25 19:17:28,255 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 19:17:28,281 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-12-25 19:17:28,282 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-12-25 19:17:28,301 INFO  L87              Difference]: Start difference. First operand  has 9449 states, 9447 states have (on average 1.6687837408701176) internal successors, (15765), 9448 states have internal predecessors, (15765), 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 271.5) internal successors, (1086), 4 states have internal predecessors, (1086), 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)
[2023-12-25 19:17:28,625 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 19:17:28,625 INFO  L93              Difference]: Finished difference Result 18468 states and 30816 transitions.
[2023-12-25 19:17:28,626 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-12-25 19:17:28,628 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 271.5) internal successors, (1086), 4 states have internal predecessors, (1086), 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 1086
[2023-12-25 19:17:28,632 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 19:17:28,671 INFO  L225             Difference]: With dead ends: 18468
[2023-12-25 19:17:28,671 INFO  L226             Difference]: Without dead ends: 9449
[2023-12-25 19:17:28,689 INFO  L412           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
[2023-12-25 19:17:28,692 INFO  L413           NwaCegarLoop]: 15758 mSDtfsCounter, 1 mSDsluCounter, 31511 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 47269 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-12-25 19:17:28,692 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 47269 Invalid, 13 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-12-25 19:17:28,715 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 9449 states.
[2023-12-25 19:17:28,839 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 9449 to 9449.
[2023-12-25 19:17:28,863 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 9449 states, 9448 states have (on average 1.6683954276037256) internal successors, (15763), 9448 states have internal predecessors, (15763), 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)
[2023-12-25 19:17:28,881 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 9449 states to 9449 states and 15763 transitions.
[2023-12-25 19:17:28,882 INFO  L78                 Accepts]: Start accepts. Automaton has 9449 states and 15763 transitions. Word has length 1086
[2023-12-25 19:17:28,884 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 19:17:28,885 INFO  L495      AbstractCegarLoop]: Abstraction has 9449 states and 15763 transitions.
[2023-12-25 19:17:28,885 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 271.5) internal successors, (1086), 4 states have internal predecessors, (1086), 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)
[2023-12-25 19:17:28,886 INFO  L276                IsEmpty]: Start isEmpty. Operand 9449 states and 15763 transitions.
[2023-12-25 19:17:28,907 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1088
[2023-12-25 19:17:28,907 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 19:17:28,908 INFO  L195           NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-12-25 19:17:28,908 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2023-12-25 19:17:28,908 INFO  L420      AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 19:17:28,909 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 19:17:28,909 INFO  L85        PathProgramCache]: Analyzing trace with hash -994921998, now seen corresponding path program 1 times
[2023-12-25 19:17:28,909 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 19:17:28,910 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1143425730]
[2023-12-25 19:17:28,910 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 19:17:28,910 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 19:17:29,304 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 19:17:30,546 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-25 19:17:30,546 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 19:17:30,546 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1143425730]
[2023-12-25 19:17:30,547 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1143425730] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 19:17:30,547 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 19:17:30,547 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-12-25 19:17:30,547 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [612659665]
[2023-12-25 19:17:30,547 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 19:17:30,550 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-12-25 19:17:30,553 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 19:17:30,554 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-12-25 19:17:30,554 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-12-25 19:17:30,555 INFO  L87              Difference]: Start difference. First operand 9449 states and 15763 transitions. Second operand  has 4 states, 4 states have (on average 271.75) internal successors, (1087), 4 states have internal predecessors, (1087), 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)
[2023-12-25 19:17:30,821 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 19:17:30,821 INFO  L93              Difference]: Finished difference Result 18471 states and 30814 transitions.
[2023-12-25 19:17:30,822 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-12-25 19:17:30,822 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 271.75) internal successors, (1087), 4 states have internal predecessors, (1087), 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 1087
[2023-12-25 19:17:30,823 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 19:17:30,846 INFO  L225             Difference]: With dead ends: 18471
[2023-12-25 19:17:30,846 INFO  L226             Difference]: Without dead ends: 9452
[2023-12-25 19:17:30,855 INFO  L412           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
[2023-12-25 19:17:30,857 INFO  L413           NwaCegarLoop]: 15758 mSDtfsCounter, 1 mSDsluCounter, 31509 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 47267 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-12-25 19:17:30,857 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 47267 Invalid, 15 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-12-25 19:17:30,868 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 9452 states.
[2023-12-25 19:17:30,968 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 9452 to 9451.
[2023-12-25 19:17:30,980 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 9451 states, 9450 states have (on average 1.6682539682539683) internal successors, (15765), 9450 states have internal predecessors, (15765), 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)
[2023-12-25 19:17:30,996 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 9451 states to 9451 states and 15765 transitions.
[2023-12-25 19:17:30,996 INFO  L78                 Accepts]: Start accepts. Automaton has 9451 states and 15765 transitions. Word has length 1087
[2023-12-25 19:17:30,997 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 19:17:30,997 INFO  L495      AbstractCegarLoop]: Abstraction has 9451 states and 15765 transitions.
[2023-12-25 19:17:30,997 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 271.75) internal successors, (1087), 4 states have internal predecessors, (1087), 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)
[2023-12-25 19:17:30,997 INFO  L276                IsEmpty]: Start isEmpty. Operand 9451 states and 15765 transitions.
[2023-12-25 19:17:31,005 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1089
[2023-12-25 19:17:31,005 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 19:17:31,006 INFO  L195           NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-12-25 19:17:31,006 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2023-12-25 19:17:31,007 INFO  L420      AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 19:17:31,007 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 19:17:31,007 INFO  L85        PathProgramCache]: Analyzing trace with hash -988236840, now seen corresponding path program 1 times
[2023-12-25 19:17:31,008 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 19:17:31,008 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [626990332]
[2023-12-25 19:17:31,008 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 19:17:31,008 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 19:17:31,351 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 19:17:32,487 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-25 19:17:32,487 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 19:17:32,487 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [626990332]
[2023-12-25 19:17:32,487 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [626990332] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 19:17:32,487 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 19:17:32,487 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-12-25 19:17:32,488 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [97472321]
[2023-12-25 19:17:32,488 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 19:17:32,489 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-12-25 19:17:32,489 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 19:17:32,490 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-12-25 19:17:32,490 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-12-25 19:17:32,490 INFO  L87              Difference]: Start difference. First operand 9451 states and 15765 transitions. Second operand  has 4 states, 4 states have (on average 272.0) internal successors, (1088), 4 states have internal predecessors, (1088), 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)
[2023-12-25 19:17:32,862 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 19:17:32,863 INFO  L93              Difference]: Finished difference Result 27487 states and 45854 transitions.
[2023-12-25 19:17:32,864 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2023-12-25 19:17:32,864 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 272.0) internal successors, (1088), 4 states have internal predecessors, (1088), 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 1088
[2023-12-25 19:17:32,865 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 19:17:32,910 INFO  L225             Difference]: With dead ends: 27487
[2023-12-25 19:17:32,911 INFO  L226             Difference]: Without dead ends: 18466
[2023-12-25 19:17:32,927 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2023-12-25 19:17:32,929 INFO  L413           NwaCegarLoop]: 17738 mSDtfsCounter, 15036 mSDsluCounter, 33487 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15036 SdHoareTripleChecker+Valid, 51225 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-12-25 19:17:32,929 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [15036 Valid, 51225 Invalid, 19 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-12-25 19:17:32,951 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 18466 states.
[2023-12-25 19:17:33,147 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 18466 to 9453.
[2023-12-25 19:17:33,162 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 9453 states, 9452 states have (on average 1.6681125687685145) internal successors, (15767), 9452 states have internal predecessors, (15767), 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)
[2023-12-25 19:17:33,178 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 9453 states to 9453 states and 15767 transitions.
[2023-12-25 19:17:33,178 INFO  L78                 Accepts]: Start accepts. Automaton has 9453 states and 15767 transitions. Word has length 1088
[2023-12-25 19:17:33,180 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 19:17:33,180 INFO  L495      AbstractCegarLoop]: Abstraction has 9453 states and 15767 transitions.
[2023-12-25 19:17:33,181 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 272.0) internal successors, (1088), 4 states have internal predecessors, (1088), 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)
[2023-12-25 19:17:33,182 INFO  L276                IsEmpty]: Start isEmpty. Operand 9453 states and 15767 transitions.
[2023-12-25 19:17:33,193 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1090
[2023-12-25 19:17:33,193 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 19:17:33,198 INFO  L195           NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-12-25 19:17:33,198 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2023-12-25 19:17:33,198 INFO  L420      AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 19:17:33,199 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 19:17:33,199 INFO  L85        PathProgramCache]: Analyzing trace with hash 1029342296, now seen corresponding path program 1 times
[2023-12-25 19:17:33,199 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 19:17:33,199 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1037959000]
[2023-12-25 19:17:33,199 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 19:17:33,199 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 19:17:33,615 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 19:17:35,068 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-25 19:17:35,068 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 19:17:35,068 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1037959000]
[2023-12-25 19:17:35,069 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1037959000] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 19:17:35,069 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 19:17:35,069 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2023-12-25 19:17:35,069 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [422730190]
[2023-12-25 19:17:35,069 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 19:17:35,070 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2023-12-25 19:17:35,070 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 19:17:35,071 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2023-12-25 19:17:35,071 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30
[2023-12-25 19:17:35,071 INFO  L87              Difference]: Start difference. First operand 9453 states and 15767 transitions. Second operand  has 6 states, 6 states have (on average 181.5) internal successors, (1089), 5 states have internal predecessors, (1089), 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)
[2023-12-25 19:17:35,574 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 19:17:35,574 INFO  L93              Difference]: Finished difference Result 28681 states and 47840 transitions.
[2023-12-25 19:17:35,574 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2023-12-25 19:17:35,575 INFO  L78                 Accepts]: Start accepts. Automaton has  has 6 states, 6 states have (on average 181.5) internal successors, (1089), 5 states have internal predecessors, (1089), 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 1089
[2023-12-25 19:17:35,576 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 19:17:35,604 INFO  L225             Difference]: With dead ends: 28681
[2023-12-25 19:17:35,604 INFO  L226             Difference]: Without dead ends: 19658
[2023-12-25 19:17:35,619 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72
[2023-12-25 19:17:35,625 INFO  L413           NwaCegarLoop]: 17737 mSDtfsCounter, 61772 mSDsluCounter, 46544 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61772 SdHoareTripleChecker+Valid, 64281 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-12-25 19:17:35,625 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [61772 Valid, 64281 Invalid, 20 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-12-25 19:17:35,644 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 19658 states.
[2023-12-25 19:17:35,826 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 19658 to 10641.
[2023-12-25 19:17:35,842 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 10641 states, 10640 states have (on average 1.667951127819549) internal successors, (17747), 10640 states have internal predecessors, (17747), 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)
[2023-12-25 19:17:35,860 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 10641 states to 10641 states and 17747 transitions.
[2023-12-25 19:17:35,860 INFO  L78                 Accepts]: Start accepts. Automaton has 10641 states and 17747 transitions. Word has length 1089
[2023-12-25 19:17:35,862 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 19:17:35,862 INFO  L495      AbstractCegarLoop]: Abstraction has 10641 states and 17747 transitions.
[2023-12-25 19:17:35,862 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 6 states, 6 states have (on average 181.5) internal successors, (1089), 5 states have internal predecessors, (1089), 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)
[2023-12-25 19:17:35,863 INFO  L276                IsEmpty]: Start isEmpty. Operand 10641 states and 17747 transitions.
[2023-12-25 19:17:36,213 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 7001
[2023-12-25 19:17:36,213 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 19:17:36,216 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-12-25 19:17:36,216 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3
[2023-12-25 19:17:36,216 INFO  L420      AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 19:17:36,217 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 19:17:36,218 INFO  L85        PathProgramCache]: Analyzing trace with hash -346094520, now seen corresponding path program 1 times
[2023-12-25 19:17:36,218 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 19:17:36,218 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1269005495]
[2023-12-25 19:17:36,219 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 19:17:36,219 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 19:17:36,832 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 19:17:36,832 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [64796874]
[2023-12-25 19:17:36,834 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 19:17:36,834 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 19:17:36,834 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 19:17:36,849 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)
[2023-12-25 19:17:36,866 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process
[2023-12-25 19:17:45,540 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 19:17:45,784 INFO  L262         TraceCheckSpWp]: Trace formula consists of 35219 conjuncts, 6 conjunts are in the unsatisfiable core
[2023-12-25 19:17:45,937 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 19:17:46,135 INFO  L134       CoverageAnalysis]: Checked inductivity of 798 backedges. 798 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-25 19:17:46,135 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 19:17:46,135 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 19:17:46,135 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1269005495]
[2023-12-25 19:17:46,135 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 19:17:46,135 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [64796874]
[2023-12-25 19:17:46,135 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [64796874] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 19:17:46,136 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 19:17:46,136 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-12-25 19:17:46,136 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1810352413]
[2023-12-25 19:17:46,136 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 19:17:46,142 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-12-25 19:17:46,142 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 19:17:46,149 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-12-25 19:17:46,149 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-12-25 19:17:46,152 INFO  L87              Difference]: Start difference. First operand 10641 states and 17747 transitions. Second operand  has 4 states, 4 states have (on average 1750.0) internal successors, (7000), 4 states have internal predecessors, (7000), 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)
[2023-12-25 19:17:46,476 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 19:17:46,476 INFO  L93              Difference]: Finished difference Result 19674 states and 32814 transitions.
[2023-12-25 19:17:46,477 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-12-25 19:17:46,480 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 1750.0) internal successors, (7000), 4 states have internal predecessors, (7000), 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 7000
[2023-12-25 19:17:46,481 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 19:17:46,498 INFO  L225             Difference]: With dead ends: 19674
[2023-12-25 19:17:46,498 INFO  L226             Difference]: Without dead ends: 10651
[2023-12-25 19:17:46,510 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 6999 GetRequests, 6997 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-12-25 19:17:46,510 INFO  L413           NwaCegarLoop]: 15758 mSDtfsCounter, 12 mSDsluCounter, 31506 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 47264 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-12-25 19:17:46,511 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 47264 Invalid, 18 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-12-25 19:17:46,526 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 10651 states.
[2023-12-25 19:17:46,657 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 10651 to 10643.
[2023-12-25 19:17:46,676 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 10643 states, 10642 states have (on average 1.667825596692351) internal successors, (17749), 10642 states have internal predecessors, (17749), 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)
[2023-12-25 19:17:46,695 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 10643 states to 10643 states and 17749 transitions.
[2023-12-25 19:17:46,696 INFO  L78                 Accepts]: Start accepts. Automaton has 10643 states and 17749 transitions. Word has length 7000
[2023-12-25 19:17:46,698 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 19:17:46,698 INFO  L495      AbstractCegarLoop]: Abstraction has 10643 states and 17749 transitions.
[2023-12-25 19:17:46,701 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 1750.0) internal successors, (7000), 4 states have internal predecessors, (7000), 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)
[2023-12-25 19:17:46,701 INFO  L276                IsEmpty]: Start isEmpty. Operand 10643 states and 17749 transitions.
[2023-12-25 19:17:47,049 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 7001
[2023-12-25 19:17:47,050 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 19:17:47,053 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-12-25 19:17:47,170 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0
[2023-12-25 19:17:47,268 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 19:17:47,269 INFO  L420      AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 19:17:47,269 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 19:17:47,271 INFO  L85        PathProgramCache]: Analyzing trace with hash 868051386, now seen corresponding path program 1 times
[2023-12-25 19:17:47,271 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 19:17:47,271 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [867734650]
[2023-12-25 19:17:47,272 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 19:17:47,272 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 19:17:48,127 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 19:17:48,129 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [936243691]
[2023-12-25 19:17:48,130 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 19:17:48,130 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 19:17:48,130 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 19:17:48,131 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)
[2023-12-25 19:17:48,160 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process
[2023-12-25 19:17:56,439 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 19:17:56,684 INFO  L262         TraceCheckSpWp]: Trace formula consists of 35220 conjuncts, 6 conjunts are in the unsatisfiable core
[2023-12-25 19:17:56,805 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 19:17:57,092 INFO  L134       CoverageAnalysis]: Checked inductivity of 798 backedges. 798 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-25 19:17:57,092 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 19:17:57,092 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 19:17:57,092 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [867734650]
[2023-12-25 19:17:57,093 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 19:17:57,095 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [936243691]
[2023-12-25 19:17:57,095 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [936243691] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 19:17:57,096 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 19:17:57,097 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-12-25 19:17:57,097 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [958495539]
[2023-12-25 19:17:57,097 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 19:17:57,101 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-12-25 19:17:57,102 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 19:17:57,107 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-12-25 19:17:57,107 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-12-25 19:17:57,110 INFO  L87              Difference]: Start difference. First operand 10643 states and 17749 transitions. Second operand  has 4 states, 4 states have (on average 1750.0) internal successors, (7000), 4 states have internal predecessors, (7000), 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)
[2023-12-25 19:17:57,296 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 19:17:57,297 INFO  L93              Difference]: Finished difference Result 19677 states and 32816 transitions.
[2023-12-25 19:17:57,297 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-12-25 19:17:57,299 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 1750.0) internal successors, (7000), 4 states have internal predecessors, (7000), 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 7000
[2023-12-25 19:17:57,300 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 19:17:57,314 INFO  L225             Difference]: With dead ends: 19677
[2023-12-25 19:17:57,314 INFO  L226             Difference]: Without dead ends: 10652
[2023-12-25 19:17:57,323 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 6999 GetRequests, 6997 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-12-25 19:17:57,324 INFO  L413           NwaCegarLoop]: 15758 mSDtfsCounter, 12 mSDsluCounter, 31506 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 47264 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-12-25 19:17:57,324 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 47264 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-12-25 19:17:57,333 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 10652 states.
[2023-12-25 19:17:57,428 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 10652 to 10644.
[2023-12-25 19:17:57,441 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 10644 states, 10643 states have (on average 1.6677628488208212) internal successors, (17750), 10643 states have internal predecessors, (17750), 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)
[2023-12-25 19:17:57,460 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 10644 states to 10644 states and 17750 transitions.
[2023-12-25 19:17:57,460 INFO  L78                 Accepts]: Start accepts. Automaton has 10644 states and 17750 transitions. Word has length 7000
[2023-12-25 19:17:57,461 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 19:17:57,462 INFO  L495      AbstractCegarLoop]: Abstraction has 10644 states and 17750 transitions.
[2023-12-25 19:17:57,464 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 1750.0) internal successors, (7000), 4 states have internal predecessors, (7000), 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)
[2023-12-25 19:17:57,464 INFO  L276                IsEmpty]: Start isEmpty. Operand 10644 states and 17750 transitions.
[2023-12-25 19:17:57,801 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 7001
[2023-12-25 19:17:57,801 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 19:17:57,804 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-12-25 19:17:57,920 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0
[2023-12-25 19:17:58,020 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5
[2023-12-25 19:17:58,021 INFO  L420      AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 19:17:58,021 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 19:17:58,023 INFO  L85        PathProgramCache]: Analyzing trace with hash 2006041644, now seen corresponding path program 1 times
[2023-12-25 19:17:58,023 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 19:17:58,023 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1442709833]
[2023-12-25 19:17:58,024 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 19:17:58,024 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 19:17:58,627 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 19:17:58,627 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1365902545]
[2023-12-25 19:17:58,629 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 19:17:58,629 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 19:17:58,629 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 19:17:58,630 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)
[2023-12-25 19:17:58,632 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process
[2023-12-25 19:18:06,814 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 19:18:07,041 INFO  L262         TraceCheckSpWp]: Trace formula consists of 35221 conjuncts, 6 conjunts are in the unsatisfiable core
[2023-12-25 19:18:07,123 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 19:18:07,359 INFO  L134       CoverageAnalysis]: Checked inductivity of 798 backedges. 798 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-25 19:18:07,360 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 19:18:07,360 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 19:18:07,360 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1442709833]
[2023-12-25 19:18:07,360 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 19:18:07,360 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1365902545]
[2023-12-25 19:18:07,360 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1365902545] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 19:18:07,360 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 19:18:07,361 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-12-25 19:18:07,361 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1615280161]
[2023-12-25 19:18:07,361 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 19:18:07,365 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-12-25 19:18:07,365 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 19:18:07,370 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-12-25 19:18:07,370 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-12-25 19:18:07,371 INFO  L87              Difference]: Start difference. First operand 10644 states and 17750 transitions. Second operand  has 4 states, 4 states have (on average 1750.0) internal successors, (7000), 4 states have internal predecessors, (7000), 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)
[2023-12-25 19:18:07,551 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 19:18:07,551 INFO  L93              Difference]: Finished difference Result 19679 states and 32818 transitions.
[2023-12-25 19:18:07,551 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-12-25 19:18:07,554 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 1750.0) internal successors, (7000), 4 states have internal predecessors, (7000), 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 7000
[2023-12-25 19:18:07,555 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 19:18:07,568 INFO  L225             Difference]: With dead ends: 19679
[2023-12-25 19:18:07,569 INFO  L226             Difference]: Without dead ends: 10653
[2023-12-25 19:18:07,580 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 6999 GetRequests, 6997 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-12-25 19:18:07,581 INFO  L413           NwaCegarLoop]: 15758 mSDtfsCounter, 12 mSDsluCounter, 31506 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 47264 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2023-12-25 19:18:07,581 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 47264 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-12-25 19:18:07,589 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 10653 states.
[2023-12-25 19:18:07,679 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 10653 to 10645.
[2023-12-25 19:18:07,690 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 10645 states, 10644 states have (on average 1.6677001127395716) internal successors, (17751), 10644 states have internal predecessors, (17751), 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)
[2023-12-25 19:18:07,703 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 10645 states to 10645 states and 17751 transitions.
[2023-12-25 19:18:07,703 INFO  L78                 Accepts]: Start accepts. Automaton has 10645 states and 17751 transitions. Word has length 7000
[2023-12-25 19:18:07,705 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 19:18:07,705 INFO  L495      AbstractCegarLoop]: Abstraction has 10645 states and 17751 transitions.
[2023-12-25 19:18:07,707 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 1750.0) internal successors, (7000), 4 states have internal predecessors, (7000), 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)
[2023-12-25 19:18:07,707 INFO  L276                IsEmpty]: Start isEmpty. Operand 10645 states and 17751 transitions.
[2023-12-25 19:18:08,016 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 7001
[2023-12-25 19:18:08,016 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 19:18:08,019 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-12-25 19:18:08,120 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0
[2023-12-25 19:18:08,232 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 19:18:08,233 INFO  L420      AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 19:18:08,233 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 19:18:08,235 INFO  L85        PathProgramCache]: Analyzing trace with hash -634389602, now seen corresponding path program 1 times
[2023-12-25 19:18:08,235 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 19:18:08,235 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1032786040]
[2023-12-25 19:18:08,235 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 19:18:08,236 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 19:18:08,780 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 19:18:08,780 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [49705725]
[2023-12-25 19:18:08,782 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 19:18:08,782 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 19:18:08,782 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 19:18:08,783 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)
[2023-12-25 19:18:08,785 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process
[2023-12-25 19:18:17,192 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 19:18:17,413 INFO  L262         TraceCheckSpWp]: Trace formula consists of 35222 conjuncts, 6 conjunts are in the unsatisfiable core
[2023-12-25 19:18:17,525 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 19:18:17,625 INFO  L134       CoverageAnalysis]: Checked inductivity of 798 backedges. 798 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-25 19:18:17,626 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 19:18:17,626 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 19:18:17,626 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1032786040]
[2023-12-25 19:18:17,626 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 19:18:17,626 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [49705725]
[2023-12-25 19:18:17,626 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [49705725] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 19:18:17,626 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 19:18:17,627 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-12-25 19:18:17,627 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [530697007]
[2023-12-25 19:18:17,627 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 19:18:17,632 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-12-25 19:18:17,632 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 19:18:17,636 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-12-25 19:18:17,637 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-12-25 19:18:17,638 INFO  L87              Difference]: Start difference. First operand 10645 states and 17751 transitions. Second operand  has 4 states, 4 states have (on average 1750.0) internal successors, (7000), 4 states have internal predecessors, (7000), 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)
[2023-12-25 19:18:17,888 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 19:18:17,888 INFO  L93              Difference]: Finished difference Result 19681 states and 32820 transitions.
[2023-12-25 19:18:17,889 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-12-25 19:18:17,890 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 1750.0) internal successors, (7000), 4 states have internal predecessors, (7000), 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 7000
[2023-12-25 19:18:17,892 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 19:18:17,908 INFO  L225             Difference]: With dead ends: 19681
[2023-12-25 19:18:17,908 INFO  L226             Difference]: Without dead ends: 10654
[2023-12-25 19:18:17,916 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 6999 GetRequests, 6997 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-12-25 19:18:17,916 INFO  L413           NwaCegarLoop]: 15758 mSDtfsCounter, 12 mSDsluCounter, 31506 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 47264 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-12-25 19:18:17,916 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 47264 Invalid, 17 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-12-25 19:18:17,926 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 10654 states.
[2023-12-25 19:18:18,009 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 10654 to 10646.
[2023-12-25 19:18:18,020 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 10646 states, 10645 states have (on average 1.6676373884452795) internal successors, (17752), 10645 states have internal predecessors, (17752), 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)
[2023-12-25 19:18:18,033 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 10646 states to 10646 states and 17752 transitions.
[2023-12-25 19:18:18,033 INFO  L78                 Accepts]: Start accepts. Automaton has 10646 states and 17752 transitions. Word has length 7000
[2023-12-25 19:18:18,036 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 19:18:18,036 INFO  L495      AbstractCegarLoop]: Abstraction has 10646 states and 17752 transitions.
[2023-12-25 19:18:18,038 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 1750.0) internal successors, (7000), 4 states have internal predecessors, (7000), 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)
[2023-12-25 19:18:18,038 INFO  L276                IsEmpty]: Start isEmpty. Operand 10646 states and 17752 transitions.
[2023-12-25 19:18:18,352 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 7001
[2023-12-25 19:18:18,352 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 19:18:18,355 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-12-25 19:18:18,463 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0
[2023-12-25 19:18:18,562 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 19:18:18,562 INFO  L420      AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 19:18:18,563 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 19:18:18,564 INFO  L85        PathProgramCache]: Analyzing trace with hash -1725466352, now seen corresponding path program 1 times
[2023-12-25 19:18:18,565 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 19:18:18,565 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [110930527]
[2023-12-25 19:18:18,565 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 19:18:18,565 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 19:18:19,226 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 19:18:19,226 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1717041964]
[2023-12-25 19:18:19,227 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 19:18:19,228 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 19:18:19,230 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 19:18:19,231 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)
[2023-12-25 19:18:19,233 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process
[2023-12-25 19:18:27,428 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 19:18:27,665 INFO  L262         TraceCheckSpWp]: Trace formula consists of 35223 conjuncts, 6 conjunts are in the unsatisfiable core
[2023-12-25 19:18:27,740 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 19:18:27,826 INFO  L134       CoverageAnalysis]: Checked inductivity of 798 backedges. 798 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-25 19:18:27,826 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 19:18:27,826 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 19:18:27,826 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [110930527]
[2023-12-25 19:18:27,826 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 19:18:27,827 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1717041964]
[2023-12-25 19:18:27,827 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1717041964] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 19:18:27,827 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 19:18:27,827 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-12-25 19:18:27,827 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2034568588]
[2023-12-25 19:18:27,827 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 19:18:27,832 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-12-25 19:18:27,832 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 19:18:27,836 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-12-25 19:18:27,836 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-12-25 19:18:27,837 INFO  L87              Difference]: Start difference. First operand 10646 states and 17752 transitions. Second operand  has 4 states, 4 states have (on average 1750.0) internal successors, (7000), 4 states have internal predecessors, (7000), 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)
[2023-12-25 19:18:27,999 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 19:18:28,000 INFO  L93              Difference]: Finished difference Result 19683 states and 32822 transitions.
[2023-12-25 19:18:28,000 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-12-25 19:18:28,002 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 1750.0) internal successors, (7000), 4 states have internal predecessors, (7000), 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 7000
[2023-12-25 19:18:28,003 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 19:18:28,020 INFO  L225             Difference]: With dead ends: 19683
[2023-12-25 19:18:28,020 INFO  L226             Difference]: Without dead ends: 10655
[2023-12-25 19:18:28,028 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 6999 GetRequests, 6997 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-12-25 19:18:28,030 INFO  L413           NwaCegarLoop]: 15758 mSDtfsCounter, 12 mSDsluCounter, 31506 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 47264 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2023-12-25 19:18:28,030 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 47264 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-12-25 19:18:28,040 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 10655 states.
[2023-12-25 19:18:28,256 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 10655 to 10647.
[2023-12-25 19:18:28,268 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 10647 states, 10646 states have (on average 1.6675746759346233) internal successors, (17753), 10646 states have internal predecessors, (17753), 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)
[2023-12-25 19:18:28,281 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 10647 states to 10647 states and 17753 transitions.
[2023-12-25 19:18:28,281 INFO  L78                 Accepts]: Start accepts. Automaton has 10647 states and 17753 transitions. Word has length 7000
[2023-12-25 19:18:28,283 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 19:18:28,283 INFO  L495      AbstractCegarLoop]: Abstraction has 10647 states and 17753 transitions.
[2023-12-25 19:18:28,284 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 1750.0) internal successors, (7000), 4 states have internal predecessors, (7000), 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)
[2023-12-25 19:18:28,284 INFO  L276                IsEmpty]: Start isEmpty. Operand 10647 states and 17753 transitions.
[2023-12-25 19:18:28,600 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 7001
[2023-12-25 19:18:28,600 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 19:18:28,603 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-12-25 19:18:28,712 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0
[2023-12-25 19:18:28,828 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 19:18:28,828 INFO  L420      AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 19:18:28,829 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 19:18:28,830 INFO  L85        PathProgramCache]: Analyzing trace with hash -689528446, now seen corresponding path program 1 times
[2023-12-25 19:18:28,830 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 19:18:28,830 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [533487686]
[2023-12-25 19:18:28,831 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 19:18:28,831 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 19:18:29,346 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 19:18:29,346 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [498046870]
[2023-12-25 19:18:29,347 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 19:18:29,347 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 19:18:29,347 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 19:18:29,355 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)
[2023-12-25 19:18:29,379 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process
[2023-12-25 19:18:37,883 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 19:18:38,118 INFO  L262         TraceCheckSpWp]: Trace formula consists of 35224 conjuncts, 6 conjunts are in the unsatisfiable core
[2023-12-25 19:18:38,201 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 19:18:38,284 INFO  L134       CoverageAnalysis]: Checked inductivity of 798 backedges. 798 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-25 19:18:38,284 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 19:18:38,284 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 19:18:38,284 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [533487686]
[2023-12-25 19:18:38,284 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 19:18:38,284 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [498046870]
[2023-12-25 19:18:38,284 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [498046870] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 19:18:38,284 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 19:18:38,285 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-12-25 19:18:38,285 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2058612447]
[2023-12-25 19:18:38,285 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 19:18:38,290 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-12-25 19:18:38,290 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 19:18:38,295 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-12-25 19:18:38,295 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-12-25 19:18:38,297 INFO  L87              Difference]: Start difference. First operand 10647 states and 17753 transitions. Second operand  has 4 states, 4 states have (on average 1750.0) internal successors, (7000), 4 states have internal predecessors, (7000), 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)
[2023-12-25 19:18:38,547 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 19:18:38,547 INFO  L93              Difference]: Finished difference Result 19685 states and 32824 transitions.
[2023-12-25 19:18:38,547 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-12-25 19:18:38,549 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 1750.0) internal successors, (7000), 4 states have internal predecessors, (7000), 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 7000
[2023-12-25 19:18:38,550 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 19:18:38,561 INFO  L225             Difference]: With dead ends: 19685
[2023-12-25 19:18:38,561 INFO  L226             Difference]: Without dead ends: 10656
[2023-12-25 19:18:38,570 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 6999 GetRequests, 6997 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-12-25 19:18:38,570 INFO  L413           NwaCegarLoop]: 15758 mSDtfsCounter, 12 mSDsluCounter, 31506 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 47264 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-12-25 19:18:38,570 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 47264 Invalid, 17 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-12-25 19:18:38,579 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 10656 states.
[2023-12-25 19:18:38,662 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 10656 to 10648.
[2023-12-25 19:18:38,673 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 10648 states, 10647 states have (on average 1.6675119752042828) internal successors, (17754), 10647 states have internal predecessors, (17754), 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)
[2023-12-25 19:18:38,687 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 10648 states to 10648 states and 17754 transitions.
[2023-12-25 19:18:38,687 INFO  L78                 Accepts]: Start accepts. Automaton has 10648 states and 17754 transitions. Word has length 7000
[2023-12-25 19:18:38,689 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 19:18:38,689 INFO  L495      AbstractCegarLoop]: Abstraction has 10648 states and 17754 transitions.
[2023-12-25 19:18:38,690 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 1750.0) internal successors, (7000), 4 states have internal predecessors, (7000), 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)
[2023-12-25 19:18:38,690 INFO  L276                IsEmpty]: Start isEmpty. Operand 10648 states and 17754 transitions.
[2023-12-25 19:18:39,132 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 7001
[2023-12-25 19:18:39,133 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 19:18:39,148 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-12-25 19:18:39,257 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0
[2023-12-25 19:18:39,365 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 19:18:39,366 INFO  L420      AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 19:18:39,366 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 19:18:39,368 INFO  L85        PathProgramCache]: Analyzing trace with hash 263756788, now seen corresponding path program 1 times
[2023-12-25 19:18:39,368 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 19:18:39,368 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [743851892]
[2023-12-25 19:18:39,369 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 19:18:39,369 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 19:18:39,878 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 19:18:39,878 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1755837536]
[2023-12-25 19:18:39,880 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 19:18:39,880 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 19:18:39,880 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 19:18:39,881 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)
[2023-12-25 19:18:39,883 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process
[2023-12-25 19:18:48,405 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 19:18:48,633 INFO  L262         TraceCheckSpWp]: Trace formula consists of 35225 conjuncts, 6 conjunts are in the unsatisfiable core
[2023-12-25 19:18:48,710 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 19:18:48,879 INFO  L134       CoverageAnalysis]: Checked inductivity of 798 backedges. 798 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-25 19:18:48,880 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 19:18:48,880 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 19:18:48,880 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [743851892]
[2023-12-25 19:18:48,880 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 19:18:48,880 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1755837536]
[2023-12-25 19:18:48,880 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1755837536] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 19:18:48,880 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 19:18:48,881 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-12-25 19:18:48,881 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [500938363]
[2023-12-25 19:18:48,881 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 19:18:48,885 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-12-25 19:18:48,885 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 19:18:48,889 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-12-25 19:18:48,889 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-12-25 19:18:48,890 INFO  L87              Difference]: Start difference. First operand 10648 states and 17754 transitions. Second operand  has 4 states, 4 states have (on average 1750.0) internal successors, (7000), 4 states have internal predecessors, (7000), 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)
[2023-12-25 19:18:49,046 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 19:18:49,046 INFO  L93              Difference]: Finished difference Result 19687 states and 32826 transitions.
[2023-12-25 19:18:49,047 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-12-25 19:18:49,048 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 1750.0) internal successors, (7000), 4 states have internal predecessors, (7000), 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 7000
[2023-12-25 19:18:49,050 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 19:18:49,059 INFO  L225             Difference]: With dead ends: 19687
[2023-12-25 19:18:49,059 INFO  L226             Difference]: Without dead ends: 10657
[2023-12-25 19:18:49,067 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 6999 GetRequests, 6997 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-12-25 19:18:49,067 INFO  L413           NwaCegarLoop]: 15758 mSDtfsCounter, 12 mSDsluCounter, 31506 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 47264 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2023-12-25 19:18:49,068 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 47264 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-12-25 19:18:49,075 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 10657 states.
[2023-12-25 19:18:49,144 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 10657 to 10649.
[2023-12-25 19:18:49,154 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 10649 states, 10648 states have (on average 1.6674492862509391) internal successors, (17755), 10648 states have internal predecessors, (17755), 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)
[2023-12-25 19:18:49,165 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 10649 states to 10649 states and 17755 transitions.
[2023-12-25 19:18:49,165 INFO  L78                 Accepts]: Start accepts. Automaton has 10649 states and 17755 transitions. Word has length 7000
[2023-12-25 19:18:49,167 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 19:18:49,167 INFO  L495      AbstractCegarLoop]: Abstraction has 10649 states and 17755 transitions.
[2023-12-25 19:18:49,168 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 1750.0) internal successors, (7000), 4 states have internal predecessors, (7000), 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)
[2023-12-25 19:18:49,169 INFO  L276                IsEmpty]: Start isEmpty. Operand 10649 states and 17755 transitions.
[2023-12-25 19:18:49,504 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 7001
[2023-12-25 19:18:49,505 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 19:18:49,507 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-12-25 19:18:49,598 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0
[2023-12-25 19:18:49,725 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 19:18:49,726 INFO  L420      AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 19:18:49,726 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 19:18:49,728 INFO  L85        PathProgramCache]: Analyzing trace with hash 224686950, now seen corresponding path program 1 times
[2023-12-25 19:18:49,728 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 19:18:49,728 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [777675575]
[2023-12-25 19:18:49,728 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 19:18:49,728 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 19:18:50,236 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 19:18:50,237 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [912552577]
[2023-12-25 19:18:50,238 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 19:18:50,238 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 19:18:50,238 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 19:18:50,247 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)
[2023-12-25 19:18:50,249 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process
[2023-12-25 19:18:58,183 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 19:18:58,391 INFO  L262         TraceCheckSpWp]: Trace formula consists of 35226 conjuncts, 6 conjunts are in the unsatisfiable core
[2023-12-25 19:18:58,480 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 19:18:58,589 INFO  L134       CoverageAnalysis]: Checked inductivity of 798 backedges. 798 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-25 19:18:58,590 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 19:18:58,590 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 19:18:58,590 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [777675575]
[2023-12-25 19:18:58,590 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 19:18:58,590 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [912552577]
[2023-12-25 19:18:58,590 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [912552577] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 19:18:58,590 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 19:18:58,591 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-12-25 19:18:58,591 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1806098598]
[2023-12-25 19:18:58,591 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 19:18:58,595 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-12-25 19:18:58,595 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 19:18:58,599 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-12-25 19:18:58,599 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-12-25 19:18:58,605 INFO  L87              Difference]: Start difference. First operand 10649 states and 17755 transitions. Second operand  has 4 states, 4 states have (on average 1750.0) internal successors, (7000), 4 states have internal predecessors, (7000), 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)
[2023-12-25 19:18:58,855 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 19:18:58,855 INFO  L93              Difference]: Finished difference Result 19689 states and 32828 transitions.
[2023-12-25 19:18:58,857 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-12-25 19:18:58,858 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 1750.0) internal successors, (7000), 4 states have internal predecessors, (7000), 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 7000
[2023-12-25 19:18:58,873 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 19:18:58,885 INFO  L225             Difference]: With dead ends: 19689
[2023-12-25 19:18:58,885 INFO  L226             Difference]: Without dead ends: 10658
[2023-12-25 19:18:58,889 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 6999 GetRequests, 6997 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-12-25 19:18:58,889 INFO  L413           NwaCegarLoop]: 15758 mSDtfsCounter, 12 mSDsluCounter, 31506 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 47264 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2023-12-25 19:18:58,889 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 47264 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-12-25 19:18:58,913 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 10658 states.
[2023-12-25 19:18:59,047 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 10658 to 10650.
[2023-12-25 19:18:59,076 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 10650 states, 10649 states have (on average 1.6673866090712743) internal successors, (17756), 10649 states have internal predecessors, (17756), 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)
[2023-12-25 19:18:59,096 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 10650 states to 10650 states and 17756 transitions.
[2023-12-25 19:18:59,096 INFO  L78                 Accepts]: Start accepts. Automaton has 10650 states and 17756 transitions. Word has length 7000
[2023-12-25 19:18:59,097 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 19:18:59,097 INFO  L495      AbstractCegarLoop]: Abstraction has 10650 states and 17756 transitions.
[2023-12-25 19:18:59,098 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 1750.0) internal successors, (7000), 4 states have internal predecessors, (7000), 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)
[2023-12-25 19:18:59,098 INFO  L276                IsEmpty]: Start isEmpty. Operand 10650 states and 17756 transitions.
[2023-12-25 19:18:59,455 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 7001
[2023-12-25 19:18:59,455 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 19:18:59,460 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-12-25 19:18:59,556 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0
[2023-12-25 19:18:59,676 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11
[2023-12-25 19:18:59,676 INFO  L420      AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 19:18:59,677 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 19:18:59,678 INFO  L85        PathProgramCache]: Analyzing trace with hash -1602535464, now seen corresponding path program 1 times
[2023-12-25 19:18:59,678 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 19:18:59,678 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [239255522]
[2023-12-25 19:18:59,679 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 19:18:59,679 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 19:19:00,330 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 19:19:00,330 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [913467357]
[2023-12-25 19:19:00,331 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 19:19:00,332 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 19:19:00,332 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 19:19:00,345 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)
[2023-12-25 19:19:00,360 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process
[2023-12-25 19:19:08,787 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 19:19:09,037 INFO  L262         TraceCheckSpWp]: Trace formula consists of 35227 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-12-25 19:19:09,192 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 19:19:09,706 INFO  L134       CoverageAnalysis]: Checked inductivity of 798 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 790 trivial. 0 not checked.
[2023-12-25 19:19:09,706 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 19:19:09,706 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 19:19:09,707 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [239255522]
[2023-12-25 19:19:09,707 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 19:19:09,707 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [913467357]
[2023-12-25 19:19:09,707 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [913467357] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 19:19:09,707 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 19:19:09,707 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-12-25 19:19:09,708 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [668039903]
[2023-12-25 19:19:09,708 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 19:19:09,713 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-12-25 19:19:09,713 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 19:19:09,722 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-12-25 19:19:09,722 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-12-25 19:19:09,723 INFO  L87              Difference]: Start difference. First operand 10650 states and 17756 transitions. Second operand  has 7 states, 7 states have (on average 887.2857142857143) internal successors, (6211), 7 states have internal predecessors, (6211), 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)
[2023-12-25 19:19:10,246 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 19:19:10,246 INFO  L93              Difference]: Finished difference Result 28709 states and 47868 transitions.
[2023-12-25 19:19:10,246 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-12-25 19:19:10,249 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 887.2857142857143) internal successors, (6211), 7 states have internal predecessors, (6211), 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 7000
[2023-12-25 19:19:10,255 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 19:19:10,275 INFO  L225             Difference]: With dead ends: 28709
[2023-12-25 19:19:10,275 INFO  L226             Difference]: Without dead ends: 19676
[2023-12-25 19:19:10,287 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 7009 GetRequests, 6997 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-12-25 19:19:10,288 INFO  L413           NwaCegarLoop]: 17730 mSDtfsCounter, 43572 mSDsluCounter, 68929 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43572 SdHoareTripleChecker+Valid, 86659 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-12-25 19:19:10,288 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [43572 Valid, 86659 Invalid, 48 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-12-25 19:19:10,310 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 19676 states.
[2023-12-25 19:19:10,514 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 19676 to 10652.
[2023-12-25 19:19:10,526 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 10652 states, 10651 states have (on average 1.6672612900197166) internal successors, (17758), 10651 states have internal predecessors, (17758), 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)
[2023-12-25 19:19:10,542 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 10652 states to 10652 states and 17758 transitions.
[2023-12-25 19:19:10,542 INFO  L78                 Accepts]: Start accepts. Automaton has 10652 states and 17758 transitions. Word has length 7000
[2023-12-25 19:19:10,546 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 19:19:10,546 INFO  L495      AbstractCegarLoop]: Abstraction has 10652 states and 17758 transitions.
[2023-12-25 19:19:10,546 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 887.2857142857143) internal successors, (6211), 7 states have internal predecessors, (6211), 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)
[2023-12-25 19:19:10,547 INFO  L276                IsEmpty]: Start isEmpty. Operand 10652 states and 17758 transitions.
[2023-12-25 19:19:10,837 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 7002
[2023-12-25 19:19:10,837 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 19:19:10,839 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-12-25 19:19:10,958 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0
[2023-12-25 19:19:11,064 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12
[2023-12-25 19:19:11,065 INFO  L420      AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 19:19:11,065 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 19:19:11,067 INFO  L85        PathProgramCache]: Analyzing trace with hash -1508948492, now seen corresponding path program 1 times
[2023-12-25 19:19:11,067 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 19:19:11,067 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [630918798]
[2023-12-25 19:19:11,067 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 19:19:11,068 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 19:19:11,599 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 19:19:11,600 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [911980822]
[2023-12-25 19:19:11,601 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 19:19:11,601 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 19:19:11,601 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 19:19:11,604 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)
[2023-12-25 19:19:11,613 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process
[2023-12-25 19:19:19,297 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 19:19:19,528 INFO  L262         TraceCheckSpWp]: Trace formula consists of 35231 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-12-25 19:19:19,794 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 19:19:20,152 INFO  L134       CoverageAnalysis]: Checked inductivity of 798 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 788 trivial. 0 not checked.
[2023-12-25 19:19:20,152 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 19:19:20,153 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 19:19:20,153 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [630918798]
[2023-12-25 19:19:20,153 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 19:19:20,153 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [911980822]
[2023-12-25 19:19:20,153 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [911980822] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 19:19:20,153 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 19:19:20,153 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-12-25 19:19:20,153 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1498302874]
[2023-12-25 19:19:20,154 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 19:19:20,157 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-12-25 19:19:20,157 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 19:19:20,160 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-12-25 19:19:20,160 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-12-25 19:19:20,161 INFO  L87              Difference]: Start difference. First operand 10652 states and 17758 transitions. Second operand  has 7 states, 7 states have (on average 887.7142857142857) internal successors, (6214), 7 states have internal predecessors, (6214), 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)
[2023-12-25 19:19:20,600 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 19:19:20,601 INFO  L93              Difference]: Finished difference Result 28715 states and 47874 transitions.
[2023-12-25 19:19:20,601 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-12-25 19:19:20,602 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 887.7142857142857) internal successors, (6214), 7 states have internal predecessors, (6214), 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 7001
[2023-12-25 19:19:20,606 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 19:19:20,625 INFO  L225             Difference]: With dead ends: 28715
[2023-12-25 19:19:20,625 INFO  L226             Difference]: Without dead ends: 19677
[2023-12-25 19:19:20,635 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 7010 GetRequests, 6998 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-12-25 19:19:20,636 INFO  L413           NwaCegarLoop]: 17725 mSDtfsCounter, 43571 mSDsluCounter, 68914 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43571 SdHoareTripleChecker+Valid, 86639 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-12-25 19:19:20,636 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [43571 Valid, 86639 Invalid, 48 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-12-25 19:19:20,655 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 19677 states.
[2023-12-25 19:19:20,763 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 19677 to 10654.
[2023-12-25 19:19:20,773 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 10654 states, 10653 states have (on average 1.667136018023092) internal successors, (17760), 10653 states have internal predecessors, (17760), 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)
[2023-12-25 19:19:20,784 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 10654 states to 10654 states and 17760 transitions.
[2023-12-25 19:19:20,785 INFO  L78                 Accepts]: Start accepts. Automaton has 10654 states and 17760 transitions. Word has length 7001
[2023-12-25 19:19:20,788 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 19:19:20,789 INFO  L495      AbstractCegarLoop]: Abstraction has 10654 states and 17760 transitions.
[2023-12-25 19:19:20,791 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 887.7142857142857) internal successors, (6214), 7 states have internal predecessors, (6214), 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)
[2023-12-25 19:19:20,791 INFO  L276                IsEmpty]: Start isEmpty. Operand 10654 states and 17760 transitions.
[2023-12-25 19:19:21,151 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 7003
[2023-12-25 19:19:21,152 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 19:19:21,153 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-12-25 19:19:21,271 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0
[2023-12-25 19:19:21,366 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13
[2023-12-25 19:19:21,367 INFO  L420      AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 19:19:21,367 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 19:19:21,368 INFO  L85        PathProgramCache]: Analyzing trace with hash 2142155072, now seen corresponding path program 1 times
[2023-12-25 19:19:21,368 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 19:19:21,368 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1341726846]
[2023-12-25 19:19:21,369 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 19:19:21,369 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 19:19:21,942 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 19:19:21,942 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [761339383]
[2023-12-25 19:19:21,944 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 19:19:21,944 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 19:19:21,944 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 19:19:21,945 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)
[2023-12-25 19:19:21,947 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process
[2023-12-25 19:19:30,397 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 19:19:30,636 INFO  L262         TraceCheckSpWp]: Trace formula consists of 35234 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-12-25 19:19:30,902 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 19:19:31,218 INFO  L134       CoverageAnalysis]: Checked inductivity of 798 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 786 trivial. 0 not checked.
[2023-12-25 19:19:31,218 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 19:19:31,218 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 19:19:31,218 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1341726846]
[2023-12-25 19:19:31,218 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 19:19:31,218 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [761339383]
[2023-12-25 19:19:31,218 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [761339383] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 19:19:31,218 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 19:19:31,219 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-12-25 19:19:31,219 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [407528520]
[2023-12-25 19:19:31,219 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 19:19:31,222 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-12-25 19:19:31,222 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 19:19:31,225 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-12-25 19:19:31,225 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-12-25 19:19:31,225 INFO  L87              Difference]: Start difference. First operand 10654 states and 17760 transitions. Second operand  has 7 states, 7 states have (on average 888.1428571428571) internal successors, (6217), 7 states have internal predecessors, (6217), 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)
[2023-12-25 19:19:31,725 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 19:19:31,725 INFO  L93              Difference]: Finished difference Result 28721 states and 47880 transitions.
[2023-12-25 19:19:31,725 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-12-25 19:19:31,726 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 888.1428571428571) internal successors, (6217), 7 states have internal predecessors, (6217), 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 7002
[2023-12-25 19:19:31,730 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 19:19:31,742 INFO  L225             Difference]: With dead ends: 28721
[2023-12-25 19:19:31,742 INFO  L226             Difference]: Without dead ends: 19678
[2023-12-25 19:19:31,746 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 7011 GetRequests, 6999 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-12-25 19:19:31,747 INFO  L413           NwaCegarLoop]: 17720 mSDtfsCounter, 43570 mSDsluCounter, 68899 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43570 SdHoareTripleChecker+Valid, 86619 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-12-25 19:19:31,747 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [43570 Valid, 86619 Invalid, 48 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-12-25 19:19:31,758 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 19678 states.
[2023-12-25 19:19:31,838 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 19678 to 10656.
[2023-12-25 19:19:31,847 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 10656 states, 10655 states have (on average 1.6670107930549038) internal successors, (17762), 10655 states have internal predecessors, (17762), 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)
[2023-12-25 19:19:31,857 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 10656 states to 10656 states and 17762 transitions.
[2023-12-25 19:19:31,858 INFO  L78                 Accepts]: Start accepts. Automaton has 10656 states and 17762 transitions. Word has length 7002
[2023-12-25 19:19:31,861 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 19:19:31,861 INFO  L495      AbstractCegarLoop]: Abstraction has 10656 states and 17762 transitions.
[2023-12-25 19:19:31,861 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 888.1428571428571) internal successors, (6217), 7 states have internal predecessors, (6217), 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)
[2023-12-25 19:19:31,862 INFO  L276                IsEmpty]: Start isEmpty. Operand 10656 states and 17762 transitions.
[2023-12-25 19:19:32,145 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 7004
[2023-12-25 19:19:32,146 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 19:19:32,147 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-12-25 19:19:32,258 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0
[2023-12-25 19:19:32,372 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14
[2023-12-25 19:19:32,373 INFO  L420      AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 19:19:32,373 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 19:19:32,374 INFO  L85        PathProgramCache]: Analyzing trace with hash 141300878, now seen corresponding path program 1 times
[2023-12-25 19:19:32,374 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 19:19:32,374 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [806536041]
[2023-12-25 19:19:32,374 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 19:19:32,375 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 19:19:32,837 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 19:19:32,837 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1492968825]
[2023-12-25 19:19:32,839 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 19:19:32,839 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 19:19:32,839 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 19:19:32,840 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)
[2023-12-25 19:19:32,841 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process
[2023-12-25 19:19:41,048 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 19:19:41,274 INFO  L262         TraceCheckSpWp]: Trace formula consists of 35237 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-12-25 19:19:41,354 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 19:19:41,701 INFO  L134       CoverageAnalysis]: Checked inductivity of 798 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 784 trivial. 0 not checked.
[2023-12-25 19:19:41,701 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 19:19:41,701 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 19:19:41,701 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [806536041]
[2023-12-25 19:19:41,702 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 19:19:41,702 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1492968825]
[2023-12-25 19:19:41,702 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1492968825] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 19:19:41,702 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 19:19:41,702 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-12-25 19:19:41,702 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1378096746]
[2023-12-25 19:19:41,702 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 19:19:41,706 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-12-25 19:19:41,706 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 19:19:41,710 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-12-25 19:19:41,710 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-12-25 19:19:41,711 INFO  L87              Difference]: Start difference. First operand 10656 states and 17762 transitions. Second operand  has 7 states, 7 states have (on average 888.5714285714286) internal successors, (6220), 7 states have internal predecessors, (6220), 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)
[2023-12-25 19:19:42,183 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 19:19:42,183 INFO  L93              Difference]: Finished difference Result 28727 states and 47886 transitions.
[2023-12-25 19:19:42,183 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-12-25 19:19:42,185 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 888.5714285714286) internal successors, (6220), 7 states have internal predecessors, (6220), 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 7003
[2023-12-25 19:19:42,189 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 19:19:42,208 INFO  L225             Difference]: With dead ends: 28727
[2023-12-25 19:19:42,208 INFO  L226             Difference]: Without dead ends: 19679
[2023-12-25 19:19:42,221 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 7012 GetRequests, 7000 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-12-25 19:19:42,221 INFO  L413           NwaCegarLoop]: 17715 mSDtfsCounter, 43569 mSDsluCounter, 68884 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43569 SdHoareTripleChecker+Valid, 86599 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-12-25 19:19:42,221 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [43569 Valid, 86599 Invalid, 48 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-12-25 19:19:42,236 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 19679 states.
[2023-12-25 19:19:42,429 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 19679 to 10658.
[2023-12-25 19:19:42,437 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 10658 states, 10657 states have (on average 1.6668856150886742) internal successors, (17764), 10657 states have internal predecessors, (17764), 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)
[2023-12-25 19:19:42,448 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 10658 states to 10658 states and 17764 transitions.
[2023-12-25 19:19:42,448 INFO  L78                 Accepts]: Start accepts. Automaton has 10658 states and 17764 transitions. Word has length 7003
[2023-12-25 19:19:42,451 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 19:19:42,451 INFO  L495      AbstractCegarLoop]: Abstraction has 10658 states and 17764 transitions.
[2023-12-25 19:19:42,452 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 888.5714285714286) internal successors, (6220), 7 states have internal predecessors, (6220), 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)
[2023-12-25 19:19:42,452 INFO  L276                IsEmpty]: Start isEmpty. Operand 10658 states and 17764 transitions.
[2023-12-25 19:19:42,759 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 7005
[2023-12-25 19:19:42,759 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 19:19:42,761 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-12-25 19:19:42,865 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0
[2023-12-25 19:19:42,988 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15
[2023-12-25 19:19:42,989 INFO  L420      AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 19:19:42,989 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 19:19:42,990 INFO  L85        PathProgramCache]: Analyzing trace with hash 1283549094, now seen corresponding path program 1 times
[2023-12-25 19:19:42,990 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 19:19:42,990 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [356546253]
[2023-12-25 19:19:42,991 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 19:19:42,991 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 19:19:43,716 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 19:19:43,716 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [927078797]
[2023-12-25 19:19:43,718 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 19:19:43,718 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 19:19:43,718 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 19:19:43,720 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)
[2023-12-25 19:19:43,723 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process
[2023-12-25 19:19:52,190 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 19:19:52,430 INFO  L262         TraceCheckSpWp]: Trace formula consists of 35240 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-12-25 19:19:52,521 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 19:19:52,955 INFO  L134       CoverageAnalysis]: Checked inductivity of 798 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 782 trivial. 0 not checked.
[2023-12-25 19:19:52,956 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 19:19:52,956 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 19:19:52,956 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [356546253]
[2023-12-25 19:19:52,956 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 19:19:52,956 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [927078797]
[2023-12-25 19:19:52,956 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [927078797] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 19:19:52,956 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 19:19:52,957 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-12-25 19:19:52,957 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1020731158]
[2023-12-25 19:19:52,957 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 19:19:52,960 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-12-25 19:19:52,960 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 19:19:52,963 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-12-25 19:19:52,963 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-12-25 19:19:52,964 INFO  L87              Difference]: Start difference. First operand 10658 states and 17764 transitions. Second operand  has 7 states, 7 states have (on average 889.0) internal successors, (6223), 7 states have internal predecessors, (6223), 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)
[2023-12-25 19:19:53,436 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 19:19:53,437 INFO  L93              Difference]: Finished difference Result 28733 states and 47892 transitions.
[2023-12-25 19:19:53,437 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-12-25 19:19:53,438 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 889.0) internal successors, (6223), 7 states have internal predecessors, (6223), 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 7004
[2023-12-25 19:19:53,443 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 19:19:53,463 INFO  L225             Difference]: With dead ends: 28733
[2023-12-25 19:19:53,463 INFO  L226             Difference]: Without dead ends: 19680
[2023-12-25 19:19:53,475 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 7013 GetRequests, 7001 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-12-25 19:19:53,475 INFO  L413           NwaCegarLoop]: 17710 mSDtfsCounter, 43568 mSDsluCounter, 68869 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43568 SdHoareTripleChecker+Valid, 86579 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-12-25 19:19:53,476 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [43568 Valid, 86579 Invalid, 48 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-12-25 19:19:53,494 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 19680 states.
[2023-12-25 19:19:53,627 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 19680 to 10660.
[2023-12-25 19:19:53,638 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 10660 states, 10659 states have (on average 1.6667604840979453) internal successors, (17766), 10659 states have internal predecessors, (17766), 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)
[2023-12-25 19:19:53,648 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 10660 states to 10660 states and 17766 transitions.
[2023-12-25 19:19:53,648 INFO  L78                 Accepts]: Start accepts. Automaton has 10660 states and 17766 transitions. Word has length 7004
[2023-12-25 19:19:53,651 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 19:19:53,651 INFO  L495      AbstractCegarLoop]: Abstraction has 10660 states and 17766 transitions.
[2023-12-25 19:19:53,652 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 889.0) internal successors, (6223), 7 states have internal predecessors, (6223), 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)
[2023-12-25 19:19:53,652 INFO  L276                IsEmpty]: Start isEmpty. Operand 10660 states and 17766 transitions.
[2023-12-25 19:19:53,965 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 7006
[2023-12-25 19:19:53,965 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 19:19:53,967 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-12-25 19:19:54,080 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0
[2023-12-25 19:19:54,192 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16
[2023-12-25 19:19:54,192 INFO  L420      AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 19:19:54,193 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 19:19:54,194 INFO  L85        PathProgramCache]: Analyzing trace with hash 661175082, now seen corresponding path program 1 times
[2023-12-25 19:19:54,194 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 19:19:54,194 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1243514532]
[2023-12-25 19:19:54,194 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 19:19:54,194 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 19:19:54,723 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 19:19:54,723 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [455606815]
[2023-12-25 19:19:54,725 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 19:19:54,725 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 19:19:54,725 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 19:19:54,727 INFO  L229       MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-25 19:19:54,727 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process
[2023-12-25 19:20:03,065 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 19:20:03,283 INFO  L262         TraceCheckSpWp]: Trace formula consists of 35244 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-12-25 19:20:03,358 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 19:20:03,707 INFO  L134       CoverageAnalysis]: Checked inductivity of 798 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 780 trivial. 0 not checked.
[2023-12-25 19:20:03,708 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 19:20:03,708 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 19:20:03,708 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1243514532]
[2023-12-25 19:20:03,708 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 19:20:03,708 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [455606815]
[2023-12-25 19:20:03,708 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [455606815] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 19:20:03,708 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 19:20:03,708 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-12-25 19:20:03,709 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [29490162]
[2023-12-25 19:20:03,709 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 19:20:03,712 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-12-25 19:20:03,712 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 19:20:03,714 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-12-25 19:20:03,714 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-12-25 19:20:03,715 INFO  L87              Difference]: Start difference. First operand 10660 states and 17766 transitions. Second operand  has 7 states, 7 states have (on average 889.4285714285714) internal successors, (6226), 7 states have internal predecessors, (6226), 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)
[2023-12-25 19:20:04,231 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 19:20:04,232 INFO  L93              Difference]: Finished difference Result 28739 states and 47898 transitions.
[2023-12-25 19:20:04,232 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-12-25 19:20:04,233 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 889.4285714285714) internal successors, (6226), 7 states have internal predecessors, (6226), 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 7005
[2023-12-25 19:20:04,237 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 19:20:04,251 INFO  L225             Difference]: With dead ends: 28739
[2023-12-25 19:20:04,252 INFO  L226             Difference]: Without dead ends: 19681
[2023-12-25 19:20:04,259 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 7014 GetRequests, 7002 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-12-25 19:20:04,260 INFO  L413           NwaCegarLoop]: 17705 mSDtfsCounter, 43567 mSDsluCounter, 68854 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43567 SdHoareTripleChecker+Valid, 86559 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-12-25 19:20:04,260 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [43567 Valid, 86559 Invalid, 48 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-12-25 19:20:04,273 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 19681 states.
[2023-12-25 19:20:04,360 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 19681 to 10662.
[2023-12-25 19:20:04,369 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 10662 states, 10661 states have (on average 1.66663540005628) internal successors, (17768), 10661 states have internal predecessors, (17768), 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)
[2023-12-25 19:20:04,379 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 10662 states to 10662 states and 17768 transitions.
[2023-12-25 19:20:04,379 INFO  L78                 Accepts]: Start accepts. Automaton has 10662 states and 17768 transitions. Word has length 7005
[2023-12-25 19:20:04,382 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 19:20:04,382 INFO  L495      AbstractCegarLoop]: Abstraction has 10662 states and 17768 transitions.
[2023-12-25 19:20:04,383 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 889.4285714285714) internal successors, (6226), 7 states have internal predecessors, (6226), 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)
[2023-12-25 19:20:04,383 INFO  L276                IsEmpty]: Start isEmpty. Operand 10662 states and 17768 transitions.
[2023-12-25 19:20:04,688 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 7007
[2023-12-25 19:20:04,688 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 19:20:04,690 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-12-25 19:20:04,789 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0
[2023-12-25 19:20:04,908 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 19:20:04,908 INFO  L420      AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 19:20:04,909 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 19:20:04,910 INFO  L85        PathProgramCache]: Analyzing trace with hash 222358030, now seen corresponding path program 1 times
[2023-12-25 19:20:04,910 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 19:20:04,910 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [702263246]
[2023-12-25 19:20:04,910 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 19:20:04,910 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 19:20:05,440 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 19:20:05,440 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [880917478]
[2023-12-25 19:20:05,442 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 19:20:05,442 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 19:20:05,442 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 19:20:05,443 INFO  L229       MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-25 19:20:05,446 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process
[2023-12-25 19:20:13,673 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 19:20:13,905 INFO  L262         TraceCheckSpWp]: Trace formula consists of 35247 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-12-25 19:20:14,016 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 19:20:14,353 INFO  L134       CoverageAnalysis]: Checked inductivity of 798 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 778 trivial. 0 not checked.
[2023-12-25 19:20:14,353 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 19:20:14,353 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 19:20:14,353 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [702263246]
[2023-12-25 19:20:14,353 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 19:20:14,353 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [880917478]
[2023-12-25 19:20:14,353 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [880917478] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 19:20:14,353 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 19:20:14,354 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-12-25 19:20:14,354 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [789829256]
[2023-12-25 19:20:14,354 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 19:20:14,357 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-12-25 19:20:14,357 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 19:20:14,359 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-12-25 19:20:14,359 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-12-25 19:20:14,360 INFO  L87              Difference]: Start difference. First operand 10662 states and 17768 transitions. Second operand  has 7 states, 7 states have (on average 889.8571428571429) internal successors, (6229), 7 states have internal predecessors, (6229), 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)
[2023-12-25 19:20:14,872 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 19:20:14,873 INFO  L93              Difference]: Finished difference Result 28745 states and 47904 transitions.
[2023-12-25 19:20:14,873 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-12-25 19:20:14,874 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 889.8571428571429) internal successors, (6229), 7 states have internal predecessors, (6229), 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 7006
[2023-12-25 19:20:14,878 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 19:20:14,893 INFO  L225             Difference]: With dead ends: 28745
[2023-12-25 19:20:14,893 INFO  L226             Difference]: Without dead ends: 19682
[2023-12-25 19:20:14,902 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 7015 GetRequests, 7003 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-12-25 19:20:14,903 INFO  L413           NwaCegarLoop]: 17700 mSDtfsCounter, 43566 mSDsluCounter, 68839 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43566 SdHoareTripleChecker+Valid, 86539 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-12-25 19:20:14,903 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [43566 Valid, 86539 Invalid, 48 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-12-25 19:20:14,915 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 19682 states.
[2023-12-25 19:20:15,006 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 19682 to 10664.
[2023-12-25 19:20:15,016 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 10664 states, 10663 states have (on average 1.6665103629372597) internal successors, (17770), 10663 states have internal predecessors, (17770), 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)
[2023-12-25 19:20:15,027 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 10664 states to 10664 states and 17770 transitions.
[2023-12-25 19:20:15,027 INFO  L78                 Accepts]: Start accepts. Automaton has 10664 states and 17770 transitions. Word has length 7006
[2023-12-25 19:20:15,030 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 19:20:15,030 INFO  L495      AbstractCegarLoop]: Abstraction has 10664 states and 17770 transitions.
[2023-12-25 19:20:15,031 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 889.8571428571429) internal successors, (6229), 7 states have internal predecessors, (6229), 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)
[2023-12-25 19:20:15,031 INFO  L276                IsEmpty]: Start isEmpty. Operand 10664 states and 17770 transitions.
[2023-12-25 19:20:15,311 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 7008
[2023-12-25 19:20:15,312 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 19:20:15,313 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-12-25 19:20:15,424 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0
[2023-12-25 19:20:15,540 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 19:20:15,540 INFO  L420      AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 19:20:15,541 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 19:20:15,542 INFO  L85        PathProgramCache]: Analyzing trace with hash -851630652, now seen corresponding path program 1 times
[2023-12-25 19:20:15,542 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 19:20:15,542 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1811322552]
[2023-12-25 19:20:15,542 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 19:20:15,542 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 19:20:16,000 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 19:20:16,000 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2096156783]
[2023-12-25 19:20:16,001 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 19:20:16,001 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 19:20:16,002 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 19:20:16,002 INFO  L229       MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-25 19:20:16,023 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process
[2023-12-25 19:20:24,209 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 19:20:24,438 INFO  L262         TraceCheckSpWp]: Trace formula consists of 35250 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-12-25 19:20:24,517 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 19:20:24,960 INFO  L134       CoverageAnalysis]: Checked inductivity of 798 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 776 trivial. 0 not checked.
[2023-12-25 19:20:24,960 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 19:20:24,960 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 19:20:24,960 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1811322552]
[2023-12-25 19:20:24,960 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 19:20:24,960 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2096156783]
[2023-12-25 19:20:24,960 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [2096156783] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 19:20:24,960 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 19:20:24,961 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-12-25 19:20:24,961 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [960031777]
[2023-12-25 19:20:24,961 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 19:20:24,964 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-12-25 19:20:24,964 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 19:20:24,966 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-12-25 19:20:24,967 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-12-25 19:20:24,967 INFO  L87              Difference]: Start difference. First operand 10664 states and 17770 transitions. Second operand  has 7 states, 7 states have (on average 890.2857142857143) internal successors, (6232), 7 states have internal predecessors, (6232), 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)
[2023-12-25 19:20:25,392 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 19:20:25,392 INFO  L93              Difference]: Finished difference Result 28751 states and 47910 transitions.
[2023-12-25 19:20:25,392 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-12-25 19:20:25,394 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 890.2857142857143) internal successors, (6232), 7 states have internal predecessors, (6232), 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 7007
[2023-12-25 19:20:25,398 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 19:20:25,414 INFO  L225             Difference]: With dead ends: 28751
[2023-12-25 19:20:25,415 INFO  L226             Difference]: Without dead ends: 19683
[2023-12-25 19:20:25,425 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 7016 GetRequests, 7004 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-12-25 19:20:25,426 INFO  L413           NwaCegarLoop]: 17695 mSDtfsCounter, 43565 mSDsluCounter, 68824 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43565 SdHoareTripleChecker+Valid, 86519 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-12-25 19:20:25,426 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [43565 Valid, 86519 Invalid, 48 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-12-25 19:20:25,439 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 19683 states.
[2023-12-25 19:20:25,529 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 19683 to 10666.
[2023-12-25 19:20:25,539 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 10666 states, 10665 states have (on average 1.6663853727144866) internal successors, (17772), 10665 states have internal predecessors, (17772), 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)
[2023-12-25 19:20:25,549 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 10666 states to 10666 states and 17772 transitions.
[2023-12-25 19:20:25,549 INFO  L78                 Accepts]: Start accepts. Automaton has 10666 states and 17772 transitions. Word has length 7007
[2023-12-25 19:20:25,552 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 19:20:25,553 INFO  L495      AbstractCegarLoop]: Abstraction has 10666 states and 17772 transitions.
[2023-12-25 19:20:25,554 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 890.2857142857143) internal successors, (6232), 7 states have internal predecessors, (6232), 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)
[2023-12-25 19:20:25,554 INFO  L276                IsEmpty]: Start isEmpty. Operand 10666 states and 17772 transitions.
[2023-12-25 19:20:25,836 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 7009
[2023-12-25 19:20:25,837 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 19:20:25,838 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-12-25 19:20:25,949 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0
[2023-12-25 19:20:26,064 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 19:20:26,064 INFO  L420      AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 19:20:26,065 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 19:20:26,065 INFO  L85        PathProgramCache]: Analyzing trace with hash -942480268, now seen corresponding path program 1 times
[2023-12-25 19:20:26,065 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 19:20:26,065 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2138824933]
[2023-12-25 19:20:26,066 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 19:20:26,066 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 19:20:26,651 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 19:20:26,651 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [648724914]
[2023-12-25 19:20:26,653 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 19:20:26,653 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 19:20:26,653 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 19:20:26,654 INFO  L229       MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-25 19:20:26,656 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process
[2023-12-25 19:20:34,764 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 19:20:34,987 INFO  L262         TraceCheckSpWp]: Trace formula consists of 35253 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-12-25 19:20:35,066 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 19:20:35,411 INFO  L134       CoverageAnalysis]: Checked inductivity of 798 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 774 trivial. 0 not checked.
[2023-12-25 19:20:35,412 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 19:20:35,412 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 19:20:35,412 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2138824933]
[2023-12-25 19:20:35,412 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 19:20:35,412 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [648724914]
[2023-12-25 19:20:35,412 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [648724914] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 19:20:35,412 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 19:20:35,413 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-12-25 19:20:35,413 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [595089135]
[2023-12-25 19:20:35,413 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 19:20:35,416 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-12-25 19:20:35,416 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 19:20:35,418 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-12-25 19:20:35,418 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-12-25 19:20:35,419 INFO  L87              Difference]: Start difference. First operand 10666 states and 17772 transitions. Second operand  has 7 states, 7 states have (on average 890.7142857142857) internal successors, (6235), 7 states have internal predecessors, (6235), 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)
[2023-12-25 19:20:36,002 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 19:20:36,003 INFO  L93              Difference]: Finished difference Result 28757 states and 47916 transitions.
[2023-12-25 19:20:36,003 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-12-25 19:20:36,004 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 890.7142857142857) internal successors, (6235), 7 states have internal predecessors, (6235), 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 7008
[2023-12-25 19:20:36,008 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 19:20:36,026 INFO  L225             Difference]: With dead ends: 28757
[2023-12-25 19:20:36,026 INFO  L226             Difference]: Without dead ends: 19684
[2023-12-25 19:20:36,037 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 7017 GetRequests, 7005 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-12-25 19:20:36,038 INFO  L413           NwaCegarLoop]: 17690 mSDtfsCounter, 43564 mSDsluCounter, 68809 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43564 SdHoareTripleChecker+Valid, 86499 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2023-12-25 19:20:36,038 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [43564 Valid, 86499 Invalid, 48 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2023-12-25 19:20:36,050 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 19684 states.
[2023-12-25 19:20:36,146 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 19684 to 10668.
[2023-12-25 19:20:36,155 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 10668 states, 10667 states have (on average 1.6662604293615824) internal successors, (17774), 10667 states have internal predecessors, (17774), 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)
[2023-12-25 19:20:36,165 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 10668 states to 10668 states and 17774 transitions.
[2023-12-25 19:20:36,165 INFO  L78                 Accepts]: Start accepts. Automaton has 10668 states and 17774 transitions. Word has length 7008
[2023-12-25 19:20:36,168 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 19:20:36,168 INFO  L495      AbstractCegarLoop]: Abstraction has 10668 states and 17774 transitions.
[2023-12-25 19:20:36,169 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 890.7142857142857) internal successors, (6235), 7 states have internal predecessors, (6235), 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)
[2023-12-25 19:20:36,169 INFO  L276                IsEmpty]: Start isEmpty. Operand 10668 states and 17774 transitions.
[2023-12-25 19:20:36,441 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 7010
[2023-12-25 19:20:36,441 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 19:20:36,443 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-12-25 19:20:36,549 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0
[2023-12-25 19:20:36,644 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 19:20:36,645 INFO  L420      AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 19:20:36,646 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 19:20:36,646 INFO  L85        PathProgramCache]: Analyzing trace with hash 1943188832, now seen corresponding path program 1 times
[2023-12-25 19:20:36,646 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 19:20:36,646 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1778952890]
[2023-12-25 19:20:36,647 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 19:20:36,647 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 19:20:37,190 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 19:20:37,191 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [918435049]
[2023-12-25 19:20:37,209 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 19:20:37,209 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 19:20:37,209 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 19:20:37,210 INFO  L229       MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-25 19:20:37,212 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process
[2023-12-25 19:20:45,206 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 19:20:45,455 INFO  L262         TraceCheckSpWp]: Trace formula consists of 35257 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-12-25 19:20:45,536 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 19:20:46,077 INFO  L134       CoverageAnalysis]: Checked inductivity of 798 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 772 trivial. 0 not checked.
[2023-12-25 19:20:46,077 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 19:20:46,077 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 19:20:46,077 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1778952890]
[2023-12-25 19:20:46,077 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 19:20:46,077 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [918435049]
[2023-12-25 19:20:46,077 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [918435049] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 19:20:46,077 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 19:20:46,078 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-12-25 19:20:46,078 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2013420857]
[2023-12-25 19:20:46,078 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 19:20:46,101 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-12-25 19:20:46,101 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 19:20:46,104 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-12-25 19:20:46,104 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-12-25 19:20:46,105 INFO  L87              Difference]: Start difference. First operand 10668 states and 17774 transitions. Second operand  has 7 states, 7 states have (on average 891.1428571428571) internal successors, (6238), 7 states have internal predecessors, (6238), 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)
[2023-12-25 19:20:46,559 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 19:20:46,559 INFO  L93              Difference]: Finished difference Result 28763 states and 47922 transitions.
[2023-12-25 19:20:46,561 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-12-25 19:20:46,563 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 891.1428571428571) internal successors, (6238), 7 states have internal predecessors, (6238), 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 7009
[2023-12-25 19:20:46,567 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 19:20:46,584 INFO  L225             Difference]: With dead ends: 28763
[2023-12-25 19:20:46,584 INFO  L226             Difference]: Without dead ends: 19685
[2023-12-25 19:20:46,595 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 7018 GetRequests, 7006 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-12-25 19:20:46,595 INFO  L413           NwaCegarLoop]: 17685 mSDtfsCounter, 43563 mSDsluCounter, 68794 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43563 SdHoareTripleChecker+Valid, 86479 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-12-25 19:20:46,596 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [43563 Valid, 86479 Invalid, 48 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-12-25 19:20:46,609 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 19685 states.
[2023-12-25 19:20:46,708 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 19685 to 10670.
[2023-12-25 19:20:46,720 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 10670 states, 10669 states have (on average 1.6661355328521885) internal successors, (17776), 10669 states have internal predecessors, (17776), 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)
[2023-12-25 19:20:46,730 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 10670 states to 10670 states and 17776 transitions.
[2023-12-25 19:20:46,731 INFO  L78                 Accepts]: Start accepts. Automaton has 10670 states and 17776 transitions. Word has length 7009
[2023-12-25 19:20:46,734 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 19:20:46,734 INFO  L495      AbstractCegarLoop]: Abstraction has 10670 states and 17776 transitions.
[2023-12-25 19:20:46,735 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 891.1428571428571) internal successors, (6238), 7 states have internal predecessors, (6238), 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)
[2023-12-25 19:20:46,735 INFO  L276                IsEmpty]: Start isEmpty. Operand 10670 states and 17776 transitions.
[2023-12-25 19:20:47,078 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 7011
[2023-12-25 19:20:47,078 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 19:20:47,080 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-12-25 19:20:47,179 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0
[2023-12-25 19:20:47,308 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 19:20:47,309 INFO  L420      AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 19:20:47,309 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 19:20:47,309 INFO  L85        PathProgramCache]: Analyzing trace with hash 1850636252, now seen corresponding path program 1 times
[2023-12-25 19:20:47,309 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 19:20:47,310 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1566660446]
[2023-12-25 19:20:47,310 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 19:20:47,310 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 19:20:47,953 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 19:20:47,953 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1525217435]
[2023-12-25 19:20:47,954 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 19:20:47,954 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 19:20:47,955 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 19:20:47,958 INFO  L229       MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-25 19:20:47,958 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process
[2023-12-25 19:20:56,153 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 19:20:56,368 INFO  L262         TraceCheckSpWp]: Trace formula consists of 35260 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-12-25 19:20:56,443 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 19:20:56,858 INFO  L134       CoverageAnalysis]: Checked inductivity of 798 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 770 trivial. 0 not checked.
[2023-12-25 19:20:56,859 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 19:20:56,859 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 19:20:56,859 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1566660446]
[2023-12-25 19:20:56,859 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 19:20:56,859 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1525217435]
[2023-12-25 19:20:56,859 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1525217435] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 19:20:56,859 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 19:20:56,859 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-12-25 19:20:56,860 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [702327187]
[2023-12-25 19:20:56,860 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 19:20:56,862 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-12-25 19:20:56,862 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 19:20:56,865 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-12-25 19:20:56,865 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-12-25 19:20:56,865 INFO  L87              Difference]: Start difference. First operand 10670 states and 17776 transitions. Second operand  has 7 states, 7 states have (on average 891.5714285714286) internal successors, (6241), 7 states have internal predecessors, (6241), 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)
[2023-12-25 19:20:57,282 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 19:20:57,282 INFO  L93              Difference]: Finished difference Result 28769 states and 47928 transitions.
[2023-12-25 19:20:57,282 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-12-25 19:20:57,284 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 891.5714285714286) internal successors, (6241), 7 states have internal predecessors, (6241), 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 7010
[2023-12-25 19:20:57,288 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 19:20:57,304 INFO  L225             Difference]: With dead ends: 28769
[2023-12-25 19:20:57,305 INFO  L226             Difference]: Without dead ends: 19686
[2023-12-25 19:20:57,315 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 7019 GetRequests, 7007 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-12-25 19:20:57,315 INFO  L413           NwaCegarLoop]: 17680 mSDtfsCounter, 43562 mSDsluCounter, 68779 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43562 SdHoareTripleChecker+Valid, 86459 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-12-25 19:20:57,316 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [43562 Valid, 86459 Invalid, 48 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-12-25 19:20:57,329 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 19686 states.
[2023-12-25 19:20:57,424 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 19686 to 10672.
[2023-12-25 19:20:57,434 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 10672 states, 10671 states have (on average 1.6660106831599664) internal successors, (17778), 10671 states have internal predecessors, (17778), 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)
[2023-12-25 19:20:57,444 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 10672 states to 10672 states and 17778 transitions.
[2023-12-25 19:20:57,444 INFO  L78                 Accepts]: Start accepts. Automaton has 10672 states and 17778 transitions. Word has length 7010
[2023-12-25 19:20:57,447 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 19:20:57,447 INFO  L495      AbstractCegarLoop]: Abstraction has 10672 states and 17778 transitions.
[2023-12-25 19:20:57,448 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 891.5714285714286) internal successors, (6241), 7 states have internal predecessors, (6241), 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)
[2023-12-25 19:20:57,448 INFO  L276                IsEmpty]: Start isEmpty. Operand 10672 states and 17778 transitions.
[2023-12-25 19:20:57,726 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 7012
[2023-12-25 19:20:57,726 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 19:20:57,727 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-12-25 19:20:57,821 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0
[2023-12-25 19:20:57,944 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 19:20:57,944 INFO  L420      AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 19:20:57,944 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 19:20:57,945 INFO  L85        PathProgramCache]: Analyzing trace with hash -805094406, now seen corresponding path program 1 times
[2023-12-25 19:20:57,945 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 19:20:57,945 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [355999601]
[2023-12-25 19:20:57,945 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 19:20:57,946 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 19:20:58,444 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 19:20:58,444 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1619650903]
[2023-12-25 19:20:58,445 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 19:20:58,446 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 19:20:58,446 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 19:20:58,447 INFO  L229       MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-25 19:20:58,448 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process
[2023-12-25 19:21:06,816 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 19:21:07,053 INFO  L262         TraceCheckSpWp]: Trace formula consists of 35263 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-12-25 19:21:07,129 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 19:21:07,417 INFO  L134       CoverageAnalysis]: Checked inductivity of 798 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 768 trivial. 0 not checked.
[2023-12-25 19:21:07,417 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 19:21:07,418 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 19:21:07,418 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [355999601]
[2023-12-25 19:21:07,418 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 19:21:07,418 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1619650903]
[2023-12-25 19:21:07,418 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1619650903] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 19:21:07,418 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 19:21:07,418 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-12-25 19:21:07,418 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1674494290]
[2023-12-25 19:21:07,418 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 19:21:07,421 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-12-25 19:21:07,421 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 19:21:07,424 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-12-25 19:21:07,424 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-12-25 19:21:07,424 INFO  L87              Difference]: Start difference. First operand 10672 states and 17778 transitions. Second operand  has 7 states, 7 states have (on average 892.0) internal successors, (6244), 7 states have internal predecessors, (6244), 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)
[2023-12-25 19:21:08,000 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 19:21:08,000 INFO  L93              Difference]: Finished difference Result 28775 states and 47934 transitions.
[2023-12-25 19:21:08,000 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-12-25 19:21:08,002 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 892.0) internal successors, (6244), 7 states have internal predecessors, (6244), 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 7011
[2023-12-25 19:21:08,006 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 19:21:08,024 INFO  L225             Difference]: With dead ends: 28775
[2023-12-25 19:21:08,024 INFO  L226             Difference]: Without dead ends: 19687
[2023-12-25 19:21:08,035 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 7020 GetRequests, 7008 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-12-25 19:21:08,036 INFO  L413           NwaCegarLoop]: 17675 mSDtfsCounter, 43561 mSDsluCounter, 68764 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43561 SdHoareTripleChecker+Valid, 86439 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2023-12-25 19:21:08,037 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [43561 Valid, 86439 Invalid, 48 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2023-12-25 19:21:08,052 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 19687 states.
[2023-12-25 19:21:08,155 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 19687 to 10674.
[2023-12-25 19:21:08,166 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 10674 states, 10673 states have (on average 1.6658858802585965) internal successors, (17780), 10673 states have internal predecessors, (17780), 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)
[2023-12-25 19:21:08,177 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 10674 states to 10674 states and 17780 transitions.
[2023-12-25 19:21:08,177 INFO  L78                 Accepts]: Start accepts. Automaton has 10674 states and 17780 transitions. Word has length 7011
[2023-12-25 19:21:08,180 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 19:21:08,180 INFO  L495      AbstractCegarLoop]: Abstraction has 10674 states and 17780 transitions.
[2023-12-25 19:21:08,181 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 892.0) internal successors, (6244), 7 states have internal predecessors, (6244), 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)
[2023-12-25 19:21:08,181 INFO  L276                IsEmpty]: Start isEmpty. Operand 10674 states and 17780 transitions.
[2023-12-25 19:21:08,467 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 7013
[2023-12-25 19:21:08,467 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 19:21:08,468 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-12-25 19:21:08,568 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0
[2023-12-25 19:21:08,688 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23
[2023-12-25 19:21:08,688 INFO  L420      AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 19:21:08,689 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 19:21:08,689 INFO  L85        PathProgramCache]: Analyzing trace with hash -700762558, now seen corresponding path program 1 times
[2023-12-25 19:21:08,689 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 19:21:08,689 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1371002289]
[2023-12-25 19:21:08,690 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 19:21:08,690 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 19:21:09,207 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 19:21:09,207 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [317094860]
[2023-12-25 19:21:09,209 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 19:21:09,209 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 19:21:09,209 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 19:21:09,210 INFO  L229       MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-25 19:21:09,220 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process
[2023-12-25 19:21:17,520 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 19:21:17,751 INFO  L262         TraceCheckSpWp]: Trace formula consists of 35266 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-12-25 19:21:17,829 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 19:21:18,204 INFO  L134       CoverageAnalysis]: Checked inductivity of 798 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 766 trivial. 0 not checked.
[2023-12-25 19:21:18,204 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 19:21:18,204 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 19:21:18,204 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1371002289]
[2023-12-25 19:21:18,204 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 19:21:18,204 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [317094860]
[2023-12-25 19:21:18,204 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [317094860] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 19:21:18,204 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 19:21:18,205 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-12-25 19:21:18,205 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1217078740]
[2023-12-25 19:21:18,205 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 19:21:18,208 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-12-25 19:21:18,208 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 19:21:18,210 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-12-25 19:21:18,211 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-12-25 19:21:18,211 INFO  L87              Difference]: Start difference. First operand 10674 states and 17780 transitions. Second operand  has 7 states, 7 states have (on average 892.4285714285714) internal successors, (6247), 7 states have internal predecessors, (6247), 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)
[2023-12-25 19:21:18,699 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 19:21:18,699 INFO  L93              Difference]: Finished difference Result 28781 states and 47940 transitions.
[2023-12-25 19:21:18,700 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-12-25 19:21:18,701 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 892.4285714285714) internal successors, (6247), 7 states have internal predecessors, (6247), 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 7012
[2023-12-25 19:21:18,706 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 19:21:18,724 INFO  L225             Difference]: With dead ends: 28781
[2023-12-25 19:21:18,724 INFO  L226             Difference]: Without dead ends: 19688
[2023-12-25 19:21:18,735 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 7021 GetRequests, 7009 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-12-25 19:21:18,736 INFO  L413           NwaCegarLoop]: 17670 mSDtfsCounter, 43560 mSDsluCounter, 68749 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43560 SdHoareTripleChecker+Valid, 86419 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-12-25 19:21:18,739 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [43560 Valid, 86419 Invalid, 48 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-12-25 19:21:18,755 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 19688 states.
[2023-12-25 19:21:18,857 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 19688 to 10676.
[2023-12-25 19:21:18,867 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 10676 states, 10675 states have (on average 1.6657611241217798) internal successors, (17782), 10675 states have internal predecessors, (17782), 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)
[2023-12-25 19:21:18,877 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 10676 states to 10676 states and 17782 transitions.
[2023-12-25 19:21:18,877 INFO  L78                 Accepts]: Start accepts. Automaton has 10676 states and 17782 transitions. Word has length 7012
[2023-12-25 19:21:18,882 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 19:21:18,882 INFO  L495      AbstractCegarLoop]: Abstraction has 10676 states and 17782 transitions.
[2023-12-25 19:21:18,883 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 892.4285714285714) internal successors, (6247), 7 states have internal predecessors, (6247), 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)
[2023-12-25 19:21:18,883 INFO  L276                IsEmpty]: Start isEmpty. Operand 10676 states and 17782 transitions.
[2023-12-25 19:21:19,192 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 7014
[2023-12-25 19:21:19,197 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 19:21:19,198 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-12-25 19:21:19,301 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0
[2023-12-25 19:21:19,399 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24
[2023-12-25 19:21:19,399 INFO  L420      AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 19:21:19,400 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 19:21:19,400 INFO  L85        PathProgramCache]: Analyzing trace with hash 250262678, now seen corresponding path program 1 times
[2023-12-25 19:21:19,400 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 19:21:19,400 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1425640282]
[2023-12-25 19:21:19,401 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 19:21:19,401 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 19:21:19,856 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 19:21:19,857 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2002917702]
[2023-12-25 19:21:19,858 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 19:21:19,858 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 19:21:19,858 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 19:21:19,859 INFO  L229       MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-25 19:21:19,880 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process
[2023-12-25 19:21:28,402 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 19:21:28,645 INFO  L262         TraceCheckSpWp]: Trace formula consists of 35270 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-12-25 19:21:28,727 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 19:21:29,168 INFO  L134       CoverageAnalysis]: Checked inductivity of 798 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 764 trivial. 0 not checked.
[2023-12-25 19:21:29,168 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 19:21:29,169 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 19:21:29,169 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1425640282]
[2023-12-25 19:21:29,169 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 19:21:29,169 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2002917702]
[2023-12-25 19:21:29,169 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [2002917702] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 19:21:29,169 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 19:21:29,169 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-12-25 19:21:29,170 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [434299709]
[2023-12-25 19:21:29,170 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 19:21:29,173 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-12-25 19:21:29,173 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 19:21:29,176 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-12-25 19:21:29,176 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-12-25 19:21:29,177 INFO  L87              Difference]: Start difference. First operand 10676 states and 17782 transitions. Second operand  has 7 states, 7 states have (on average 892.8571428571429) internal successors, (6250), 7 states have internal predecessors, (6250), 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)
[2023-12-25 19:21:29,631 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 19:21:29,632 INFO  L93              Difference]: Finished difference Result 28787 states and 47946 transitions.
[2023-12-25 19:21:29,633 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-12-25 19:21:29,634 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 892.8571428571429) internal successors, (6250), 7 states have internal predecessors, (6250), 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 7013
[2023-12-25 19:21:29,639 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 19:21:29,658 INFO  L225             Difference]: With dead ends: 28787
[2023-12-25 19:21:29,658 INFO  L226             Difference]: Without dead ends: 19689
[2023-12-25 19:21:29,669 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 7022 GetRequests, 7010 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-12-25 19:21:29,670 INFO  L413           NwaCegarLoop]: 17665 mSDtfsCounter, 43559 mSDsluCounter, 68734 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43559 SdHoareTripleChecker+Valid, 86399 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-12-25 19:21:29,671 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [43559 Valid, 86399 Invalid, 48 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-12-25 19:21:29,687 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 19689 states.
[2023-12-25 19:21:29,795 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 19689 to 10678.
[2023-12-25 19:21:29,806 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 10678 states, 10677 states have (on average 1.6656364147232368) internal successors, (17784), 10677 states have internal predecessors, (17784), 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)
[2023-12-25 19:21:29,817 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 10678 states to 10678 states and 17784 transitions.
[2023-12-25 19:21:29,817 INFO  L78                 Accepts]: Start accepts. Automaton has 10678 states and 17784 transitions. Word has length 7013
[2023-12-25 19:21:29,820 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 19:21:29,820 INFO  L495      AbstractCegarLoop]: Abstraction has 10678 states and 17784 transitions.
[2023-12-25 19:21:29,822 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 892.8571428571429) internal successors, (6250), 7 states have internal predecessors, (6250), 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)
[2023-12-25 19:21:29,822 INFO  L276                IsEmpty]: Start isEmpty. Operand 10678 states and 17784 transitions.
[2023-12-25 19:21:30,111 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 7015
[2023-12-25 19:21:30,111 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 19:21:30,113 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-12-25 19:21:30,240 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0
[2023-12-25 19:21:30,332 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25
[2023-12-25 19:21:30,333 INFO  L420      AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 19:21:30,333 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 19:21:30,333 INFO  L85        PathProgramCache]: Analyzing trace with hash 1642257066, now seen corresponding path program 1 times
[2023-12-25 19:21:30,334 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 19:21:30,334 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [819467016]
[2023-12-25 19:21:30,334 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 19:21:30,334 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 19:21:30,928 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 19:21:30,928 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1144585794]
[2023-12-25 19:21:30,930 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 19:21:30,930 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 19:21:30,930 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 19:21:30,937 INFO  L229       MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-25 19:21:30,939 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process
[2023-12-25 19:21:39,217 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 19:21:39,445 INFO  L262         TraceCheckSpWp]: Trace formula consists of 35273 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-12-25 19:21:39,593 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 19:21:39,946 INFO  L134       CoverageAnalysis]: Checked inductivity of 798 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 762 trivial. 0 not checked.
[2023-12-25 19:21:39,946 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 19:21:39,946 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 19:21:39,946 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [819467016]
[2023-12-25 19:21:39,946 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 19:21:39,946 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1144585794]
[2023-12-25 19:21:39,946 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1144585794] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 19:21:39,946 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 19:21:39,947 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-12-25 19:21:39,947 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [933069319]
[2023-12-25 19:21:39,947 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 19:21:39,950 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-12-25 19:21:39,950 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 19:21:39,952 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-12-25 19:21:39,952 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-12-25 19:21:39,953 INFO  L87              Difference]: Start difference. First operand 10678 states and 17784 transitions. Second operand  has 7 states, 7 states have (on average 893.2857142857143) internal successors, (6253), 7 states have internal predecessors, (6253), 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)
[2023-12-25 19:21:40,463 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 19:21:40,464 INFO  L93              Difference]: Finished difference Result 28793 states and 47952 transitions.
[2023-12-25 19:21:40,464 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-12-25 19:21:40,465 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 893.2857142857143) internal successors, (6253), 7 states have internal predecessors, (6253), 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 7014
[2023-12-25 19:21:40,469 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 19:21:40,485 INFO  L225             Difference]: With dead ends: 28793
[2023-12-25 19:21:40,485 INFO  L226             Difference]: Without dead ends: 19690
[2023-12-25 19:21:40,495 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 7023 GetRequests, 7011 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-12-25 19:21:40,496 INFO  L413           NwaCegarLoop]: 17660 mSDtfsCounter, 43558 mSDsluCounter, 68719 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43558 SdHoareTripleChecker+Valid, 86379 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-12-25 19:21:40,496 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [43558 Valid, 86379 Invalid, 48 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-12-25 19:21:40,509 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 19690 states.
[2023-12-25 19:21:40,606 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 19690 to 10680.
[2023-12-25 19:21:40,615 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 10680 states, 10679 states have (on average 1.6655117520367075) internal successors, (17786), 10679 states have internal predecessors, (17786), 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)
[2023-12-25 19:21:40,624 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 10680 states to 10680 states and 17786 transitions.
[2023-12-25 19:21:40,625 INFO  L78                 Accepts]: Start accepts. Automaton has 10680 states and 17786 transitions. Word has length 7014
[2023-12-25 19:21:40,628 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 19:21:40,628 INFO  L495      AbstractCegarLoop]: Abstraction has 10680 states and 17786 transitions.
[2023-12-25 19:21:40,629 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 893.2857142857143) internal successors, (6253), 7 states have internal predecessors, (6253), 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)
[2023-12-25 19:21:40,629 INFO  L276                IsEmpty]: Start isEmpty. Operand 10680 states and 17786 transitions.
[2023-12-25 19:21:40,950 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 7016
[2023-12-25 19:21:40,950 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 19:21:40,952 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-12-25 19:21:41,073 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0
[2023-12-25 19:21:41,168 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 19:21:41,168 INFO  L420      AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 19:21:41,169 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 19:21:41,169 INFO  L85        PathProgramCache]: Analyzing trace with hash -2040801488, now seen corresponding path program 1 times
[2023-12-25 19:21:41,169 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 19:21:41,169 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1433625119]
[2023-12-25 19:21:41,170 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 19:21:41,170 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 19:21:41,653 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 19:21:41,654 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [758211007]
[2023-12-25 19:21:41,655 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 19:21:41,655 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 19:21:41,655 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 19:21:41,656 INFO  L229       MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-25 19:21:41,657 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process
[2023-12-25 19:21:50,144 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 19:21:50,381 INFO  L262         TraceCheckSpWp]: Trace formula consists of 35276 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-12-25 19:21:50,465 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 19:21:50,911 INFO  L134       CoverageAnalysis]: Checked inductivity of 798 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked.
[2023-12-25 19:21:50,911 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 19:21:50,912 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 19:21:50,912 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1433625119]
[2023-12-25 19:21:50,912 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 19:21:50,912 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [758211007]
[2023-12-25 19:21:50,912 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [758211007] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 19:21:50,912 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 19:21:50,912 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-12-25 19:21:50,912 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2097573613]
[2023-12-25 19:21:50,913 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 19:21:50,915 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-12-25 19:21:50,915 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 19:21:50,918 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-12-25 19:21:50,918 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-12-25 19:21:50,919 INFO  L87              Difference]: Start difference. First operand 10680 states and 17786 transitions. Second operand  has 7 states, 7 states have (on average 893.7142857142857) internal successors, (6256), 7 states have internal predecessors, (6256), 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)
[2023-12-25 19:21:51,429 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 19:21:51,429 INFO  L93              Difference]: Finished difference Result 28799 states and 47958 transitions.
[2023-12-25 19:21:51,429 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-12-25 19:21:51,431 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 893.7142857142857) internal successors, (6256), 7 states have internal predecessors, (6256), 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 7015
[2023-12-25 19:21:51,435 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 19:21:51,456 INFO  L225             Difference]: With dead ends: 28799
[2023-12-25 19:21:51,456 INFO  L226             Difference]: Without dead ends: 19691
[2023-12-25 19:21:51,469 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 7024 GetRequests, 7012 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-12-25 19:21:51,470 INFO  L413           NwaCegarLoop]: 17655 mSDtfsCounter, 43557 mSDsluCounter, 68704 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43557 SdHoareTripleChecker+Valid, 86359 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-12-25 19:21:51,470 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [43557 Valid, 86359 Invalid, 48 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-12-25 19:21:51,489 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 19691 states.
[2023-12-25 19:21:51,599 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 19691 to 10682.
[2023-12-25 19:21:51,609 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 10682 states, 10681 states have (on average 1.6653871360359518) internal successors, (17788), 10681 states have internal predecessors, (17788), 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)
[2023-12-25 19:21:51,620 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 10682 states to 10682 states and 17788 transitions.
[2023-12-25 19:21:51,621 INFO  L78                 Accepts]: Start accepts. Automaton has 10682 states and 17788 transitions. Word has length 7015
[2023-12-25 19:21:51,624 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 19:21:51,624 INFO  L495      AbstractCegarLoop]: Abstraction has 10682 states and 17788 transitions.
[2023-12-25 19:21:51,625 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 893.7142857142857) internal successors, (6256), 7 states have internal predecessors, (6256), 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)
[2023-12-25 19:21:51,625 INFO  L276                IsEmpty]: Start isEmpty. Operand 10682 states and 17788 transitions.
[2023-12-25 19:21:51,920 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 7017
[2023-12-25 19:21:51,920 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 19:21:51,922 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-12-25 19:21:52,037 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0
[2023-12-25 19:21:52,148 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27
[2023-12-25 19:21:52,149 INFO  L420      AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 19:21:52,149 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 19:21:52,150 INFO  L85        PathProgramCache]: Analyzing trace with hash 482729232, now seen corresponding path program 1 times
[2023-12-25 19:21:52,150 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 19:21:52,150 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1829557972]
[2023-12-25 19:21:52,150 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 19:21:52,151 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 19:21:52,770 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 19:21:52,770 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [644094915]
[2023-12-25 19:21:52,772 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 19:21:52,772 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 19:21:52,772 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 19:21:52,773 INFO  L229       MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-25 19:21:52,775 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process
[2023-12-25 19:22:01,014 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 19:22:01,226 INFO  L262         TraceCheckSpWp]: Trace formula consists of 35279 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-12-25 19:22:01,296 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 19:22:01,623 INFO  L134       CoverageAnalysis]: Checked inductivity of 798 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 758 trivial. 0 not checked.
[2023-12-25 19:22:01,623 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 19:22:01,623 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 19:22:01,623 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1829557972]
[2023-12-25 19:22:01,623 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 19:22:01,623 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [644094915]
[2023-12-25 19:22:01,623 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [644094915] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 19:22:01,623 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 19:22:01,624 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-12-25 19:22:01,624 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [184251193]
[2023-12-25 19:22:01,624 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 19:22:01,627 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-12-25 19:22:01,627 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 19:22:01,629 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-12-25 19:22:01,629 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-12-25 19:22:01,630 INFO  L87              Difference]: Start difference. First operand 10682 states and 17788 transitions. Second operand  has 7 states, 7 states have (on average 894.1428571428571) internal successors, (6259), 7 states have internal predecessors, (6259), 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)
[2023-12-25 19:22:02,164 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 19:22:02,164 INFO  L93              Difference]: Finished difference Result 28805 states and 47964 transitions.
[2023-12-25 19:22:02,164 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-12-25 19:22:02,165 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 894.1428571428571) internal successors, (6259), 7 states have internal predecessors, (6259), 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 7016
[2023-12-25 19:22:02,169 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 19:22:02,182 INFO  L225             Difference]: With dead ends: 28805
[2023-12-25 19:22:02,183 INFO  L226             Difference]: Without dead ends: 19692
[2023-12-25 19:22:02,189 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 7025 GetRequests, 7013 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-12-25 19:22:02,189 INFO  L413           NwaCegarLoop]: 17650 mSDtfsCounter, 43556 mSDsluCounter, 68689 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43556 SdHoareTripleChecker+Valid, 86339 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-12-25 19:22:02,189 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [43556 Valid, 86339 Invalid, 48 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-12-25 19:22:02,201 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 19692 states.
[2023-12-25 19:22:02,286 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 19692 to 10684.
[2023-12-25 19:22:02,295 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 10684 states, 10683 states have (on average 1.6652625666947487) internal successors, (17790), 10683 states have internal predecessors, (17790), 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)
[2023-12-25 19:22:02,304 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 10684 states to 10684 states and 17790 transitions.
[2023-12-25 19:22:02,305 INFO  L78                 Accepts]: Start accepts. Automaton has 10684 states and 17790 transitions. Word has length 7016
[2023-12-25 19:22:02,308 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 19:22:02,309 INFO  L495      AbstractCegarLoop]: Abstraction has 10684 states and 17790 transitions.
[2023-12-25 19:22:02,309 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 894.1428571428571) internal successors, (6259), 7 states have internal predecessors, (6259), 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)
[2023-12-25 19:22:02,309 INFO  L276                IsEmpty]: Start isEmpty. Operand 10684 states and 17790 transitions.
[2023-12-25 19:22:02,613 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 7018
[2023-12-25 19:22:02,614 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 19:22:02,615 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-12-25 19:22:02,711 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0
[2023-12-25 19:22:02,840 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28
[2023-12-25 19:22:02,840 INFO  L420      AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 19:22:02,841 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 19:22:02,841 INFO  L85        PathProgramCache]: Analyzing trace with hash -1785841460, now seen corresponding path program 1 times
[2023-12-25 19:22:02,841 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 19:22:02,841 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [797422195]
[2023-12-25 19:22:02,842 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 19:22:02,842 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 19:22:03,304 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 19:22:03,304 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1529606055]
[2023-12-25 19:22:03,305 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 19:22:03,305 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 19:22:03,306 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 19:22:03,306 INFO  L229       MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-25 19:22:03,308 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process
[2023-12-25 19:22:11,489 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 19:22:11,711 INFO  L262         TraceCheckSpWp]: Trace formula consists of 35283 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-12-25 19:22:11,790 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 19:22:12,170 INFO  L134       CoverageAnalysis]: Checked inductivity of 798 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 756 trivial. 0 not checked.
[2023-12-25 19:22:12,170 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 19:22:12,170 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 19:22:12,170 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [797422195]
[2023-12-25 19:22:12,170 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 19:22:12,170 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1529606055]
[2023-12-25 19:22:12,170 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1529606055] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 19:22:12,170 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 19:22:12,171 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-12-25 19:22:12,171 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2041464380]
[2023-12-25 19:22:12,171 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 19:22:12,174 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-12-25 19:22:12,174 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 19:22:12,176 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-12-25 19:22:12,177 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-12-25 19:22:12,177 INFO  L87              Difference]: Start difference. First operand 10684 states and 17790 transitions. Second operand  has 7 states, 7 states have (on average 894.5714285714286) internal successors, (6262), 7 states have internal predecessors, (6262), 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)
[2023-12-25 19:22:12,727 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 19:22:12,727 INFO  L93              Difference]: Finished difference Result 28811 states and 47970 transitions.
[2023-12-25 19:22:12,727 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-12-25 19:22:12,729 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 894.5714285714286) internal successors, (6262), 7 states have internal predecessors, (6262), 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 7017
[2023-12-25 19:22:12,733 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 19:22:12,751 INFO  L225             Difference]: With dead ends: 28811
[2023-12-25 19:22:12,752 INFO  L226             Difference]: Without dead ends: 19693
[2023-12-25 19:22:12,764 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 7026 GetRequests, 7014 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-12-25 19:22:12,765 INFO  L413           NwaCegarLoop]: 17645 mSDtfsCounter, 43555 mSDsluCounter, 68674 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43555 SdHoareTripleChecker+Valid, 86319 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-12-25 19:22:12,765 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [43555 Valid, 86319 Invalid, 48 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-12-25 19:22:12,780 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 19693 states.
[2023-12-25 19:22:12,887 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 19693 to 10686.
[2023-12-25 19:22:12,898 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 10686 states, 10685 states have (on average 1.6651380439868975) internal successors, (17792), 10685 states have internal predecessors, (17792), 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)
[2023-12-25 19:22:12,908 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 10686 states to 10686 states and 17792 transitions.
[2023-12-25 19:22:12,908 INFO  L78                 Accepts]: Start accepts. Automaton has 10686 states and 17792 transitions. Word has length 7017
[2023-12-25 19:22:12,912 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 19:22:12,912 INFO  L495      AbstractCegarLoop]: Abstraction has 10686 states and 17792 transitions.
[2023-12-25 19:22:12,913 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 894.5714285714286) internal successors, (6262), 7 states have internal predecessors, (6262), 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)
[2023-12-25 19:22:12,913 INFO  L276                IsEmpty]: Start isEmpty. Operand 10686 states and 17792 transitions.
[2023-12-25 19:22:13,201 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 7019
[2023-12-25 19:22:13,202 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 19:22:13,203 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-12-25 19:22:13,321 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0
[2023-12-25 19:22:13,416 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 19:22:13,416 INFO  L420      AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 19:22:13,417 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 19:22:13,417 INFO  L85        PathProgramCache]: Analyzing trace with hash 139039352, now seen corresponding path program 1 times
[2023-12-25 19:22:13,417 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 19:22:13,417 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [807001022]
[2023-12-25 19:22:13,418 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 19:22:13,418 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 19:22:13,948 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 19:22:13,948 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1601972188]
[2023-12-25 19:22:13,949 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 19:22:13,949 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 19:22:13,949 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 19:22:13,950 INFO  L229       MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-25 19:22:13,952 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process
[2023-12-25 19:22:22,290 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 19:22:22,519 INFO  L262         TraceCheckSpWp]: Trace formula consists of 35286 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-12-25 19:22:22,595 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 19:22:22,943 INFO  L134       CoverageAnalysis]: Checked inductivity of 798 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 754 trivial. 0 not checked.
[2023-12-25 19:22:22,943 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 19:22:22,943 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 19:22:22,943 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [807001022]
[2023-12-25 19:22:22,944 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 19:22:22,944 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1601972188]
[2023-12-25 19:22:22,944 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1601972188] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 19:22:22,944 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 19:22:22,944 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-12-25 19:22:22,944 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2067485974]
[2023-12-25 19:22:22,944 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 19:22:22,947 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-12-25 19:22:22,947 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 19:22:22,949 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-12-25 19:22:22,950 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-12-25 19:22:22,950 INFO  L87              Difference]: Start difference. First operand 10686 states and 17792 transitions. Second operand  has 7 states, 7 states have (on average 895.0) internal successors, (6265), 7 states have internal predecessors, (6265), 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)
[2023-12-25 19:22:23,492 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 19:22:23,492 INFO  L93              Difference]: Finished difference Result 28817 states and 47976 transitions.
[2023-12-25 19:22:23,492 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-12-25 19:22:23,494 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 895.0) internal successors, (6265), 7 states have internal predecessors, (6265), 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 7018
[2023-12-25 19:22:23,497 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 19:22:23,509 INFO  L225             Difference]: With dead ends: 28817
[2023-12-25 19:22:23,510 INFO  L226             Difference]: Without dead ends: 19694
[2023-12-25 19:22:23,515 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 7027 GetRequests, 7015 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-12-25 19:22:23,516 INFO  L413           NwaCegarLoop]: 17640 mSDtfsCounter, 43554 mSDsluCounter, 68659 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43554 SdHoareTripleChecker+Valid, 86299 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-12-25 19:22:23,516 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [43554 Valid, 86299 Invalid, 48 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-12-25 19:22:23,528 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 19694 states.
[2023-12-25 19:22:23,607 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 19694 to 10688.
[2023-12-25 19:22:23,616 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 10688 states, 10687 states have (on average 1.6650135678862168) internal successors, (17794), 10687 states have internal predecessors, (17794), 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)
[2023-12-25 19:22:23,625 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 10688 states to 10688 states and 17794 transitions.
[2023-12-25 19:22:23,625 INFO  L78                 Accepts]: Start accepts. Automaton has 10688 states and 17794 transitions. Word has length 7018
[2023-12-25 19:22:23,628 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 19:22:23,628 INFO  L495      AbstractCegarLoop]: Abstraction has 10688 states and 17794 transitions.
[2023-12-25 19:22:23,629 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 895.0) internal successors, (6265), 7 states have internal predecessors, (6265), 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)
[2023-12-25 19:22:23,629 INFO  L276                IsEmpty]: Start isEmpty. Operand 10688 states and 17794 transitions.
[2023-12-25 19:22:23,872 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 7020
[2023-12-25 19:22:23,872 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 19:22:23,874 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-12-25 19:22:23,972 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Ended with exit code 0
[2023-12-25 19:22:24,098 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 19:22:24,099 INFO  L420      AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 19:22:24,105 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 19:22:24,106 INFO  L85        PathProgramCache]: Analyzing trace with hash 522483558, now seen corresponding path program 1 times
[2023-12-25 19:22:24,106 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 19:22:24,106 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1142158899]
[2023-12-25 19:22:24,106 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 19:22:24,106 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 19:22:24,605 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 19:22:24,605 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1950218832]
[2023-12-25 19:22:24,606 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 19:22:24,606 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 19:22:24,607 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 19:22:24,608 INFO  L229       MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-25 19:22:24,608 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process
[2023-12-25 19:22:33,185 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 19:22:33,435 INFO  L262         TraceCheckSpWp]: Trace formula consists of 35289 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-12-25 19:22:33,518 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 19:22:33,868 INFO  L134       CoverageAnalysis]: Checked inductivity of 798 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 752 trivial. 0 not checked.
[2023-12-25 19:22:33,868 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 19:22:33,868 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 19:22:33,868 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1142158899]
[2023-12-25 19:22:33,868 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 19:22:33,868 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1950218832]
[2023-12-25 19:22:33,868 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1950218832] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 19:22:33,868 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 19:22:33,869 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-12-25 19:22:33,869 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1786854690]
[2023-12-25 19:22:33,869 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 19:22:33,872 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-12-25 19:22:33,872 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 19:22:33,874 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-12-25 19:22:33,875 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-12-25 19:22:33,875 INFO  L87              Difference]: Start difference. First operand 10688 states and 17794 transitions. Second operand  has 7 states, 7 states have (on average 895.4285714285714) internal successors, (6268), 7 states have internal predecessors, (6268), 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)
[2023-12-25 19:22:34,419 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 19:22:34,419 INFO  L93              Difference]: Finished difference Result 28823 states and 47982 transitions.
[2023-12-25 19:22:34,419 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-12-25 19:22:34,421 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 895.4285714285714) internal successors, (6268), 7 states have internal predecessors, (6268), 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 7019
[2023-12-25 19:22:34,425 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 19:22:34,443 INFO  L225             Difference]: With dead ends: 28823
[2023-12-25 19:22:34,443 INFO  L226             Difference]: Without dead ends: 19695
[2023-12-25 19:22:34,455 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 7028 GetRequests, 7016 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-12-25 19:22:34,455 INFO  L413           NwaCegarLoop]: 17635 mSDtfsCounter, 43553 mSDsluCounter, 68644 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43553 SdHoareTripleChecker+Valid, 86279 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2023-12-25 19:22:34,456 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [43553 Valid, 86279 Invalid, 48 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2023-12-25 19:22:34,469 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 19695 states.
[2023-12-25 19:22:34,563 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 19695 to 10690.
[2023-12-25 19:22:34,573 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 10690 states, 10689 states have (on average 1.664889138366545) internal successors, (17796), 10689 states have internal predecessors, (17796), 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)
[2023-12-25 19:22:34,583 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 10690 states to 10690 states and 17796 transitions.
[2023-12-25 19:22:34,583 INFO  L78                 Accepts]: Start accepts. Automaton has 10690 states and 17796 transitions. Word has length 7019
[2023-12-25 19:22:34,586 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 19:22:34,586 INFO  L495      AbstractCegarLoop]: Abstraction has 10690 states and 17796 transitions.
[2023-12-25 19:22:34,587 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 895.4285714285714) internal successors, (6268), 7 states have internal predecessors, (6268), 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)
[2023-12-25 19:22:34,587 INFO  L276                IsEmpty]: Start isEmpty. Operand 10690 states and 17796 transitions.
[2023-12-25 19:22:34,865 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 7021
[2023-12-25 19:22:34,866 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 19:22:34,867 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-12-25 19:22:34,969 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0
[2023-12-25 19:22:35,072 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 19:22:35,073 INFO  L420      AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 19:22:35,073 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 19:22:35,074 INFO  L85        PathProgramCache]: Analyzing trace with hash 29251806, now seen corresponding path program 1 times
[2023-12-25 19:22:35,074 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 19:22:35,074 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [454197531]
[2023-12-25 19:22:35,074 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 19:22:35,075 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 19:22:35,559 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 19:22:35,559 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [485524342]
[2023-12-25 19:22:35,561 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 19:22:35,561 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 19:22:35,561 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 19:22:35,562 INFO  L229       MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-25 19:22:35,584 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process
[2023-12-25 19:22:43,999 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 19:22:44,235 INFO  L262         TraceCheckSpWp]: Trace formula consists of 35292 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-12-25 19:22:44,314 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 19:22:44,667 INFO  L134       CoverageAnalysis]: Checked inductivity of 798 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 750 trivial. 0 not checked.
[2023-12-25 19:22:44,668 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 19:22:44,668 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 19:22:44,668 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [454197531]
[2023-12-25 19:22:44,668 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 19:22:44,668 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [485524342]
[2023-12-25 19:22:44,668 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [485524342] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 19:22:44,668 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 19:22:44,668 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-12-25 19:22:44,669 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2108122035]
[2023-12-25 19:22:44,669 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 19:22:44,672 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-12-25 19:22:44,672 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 19:22:44,674 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-12-25 19:22:44,674 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-12-25 19:22:44,674 INFO  L87              Difference]: Start difference. First operand 10690 states and 17796 transitions. Second operand  has 7 states, 7 states have (on average 895.8571428571429) internal successors, (6271), 7 states have internal predecessors, (6271), 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)
[2023-12-25 19:22:45,225 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 19:22:45,225 INFO  L93              Difference]: Finished difference Result 28829 states and 47988 transitions.
[2023-12-25 19:22:45,225 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-12-25 19:22:45,226 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 895.8571428571429) internal successors, (6271), 7 states have internal predecessors, (6271), 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 7020
[2023-12-25 19:22:45,230 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 19:22:45,247 INFO  L225             Difference]: With dead ends: 28829
[2023-12-25 19:22:45,248 INFO  L226             Difference]: Without dead ends: 19696
[2023-12-25 19:22:45,257 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 7029 GetRequests, 7017 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-12-25 19:22:45,257 INFO  L413           NwaCegarLoop]: 17630 mSDtfsCounter, 43552 mSDsluCounter, 68629 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43552 SdHoareTripleChecker+Valid, 86259 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-12-25 19:22:45,257 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [43552 Valid, 86259 Invalid, 48 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-12-25 19:22:45,271 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 19696 states.
[2023-12-25 19:22:45,380 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 19696 to 10692.
[2023-12-25 19:22:45,391 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 10692 states, 10691 states have (on average 1.6647647554017397) internal successors, (17798), 10691 states have internal predecessors, (17798), 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)
[2023-12-25 19:22:45,401 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 10692 states to 10692 states and 17798 transitions.
[2023-12-25 19:22:45,401 INFO  L78                 Accepts]: Start accepts. Automaton has 10692 states and 17798 transitions. Word has length 7020
[2023-12-25 19:22:45,404 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 19:22:45,404 INFO  L495      AbstractCegarLoop]: Abstraction has 10692 states and 17798 transitions.
[2023-12-25 19:22:45,405 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 895.8571428571429) internal successors, (6271), 7 states have internal predecessors, (6271), 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)
[2023-12-25 19:22:45,405 INFO  L276                IsEmpty]: Start isEmpty. Operand 10692 states and 17798 transitions.
[2023-12-25 19:22:45,647 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 7022
[2023-12-25 19:22:45,647 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 19:22:45,648 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-12-25 19:22:45,750 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0
[2023-12-25 19:22:45,876 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 19:22:45,876 INFO  L420      AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 19:22:45,877 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 19:22:45,877 INFO  L85        PathProgramCache]: Analyzing trace with hash 500875778, now seen corresponding path program 1 times
[2023-12-25 19:22:45,877 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 19:22:45,877 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1687039640]
[2023-12-25 19:22:45,878 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 19:22:45,878 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 19:22:46,401 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 19:22:46,401 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1355366250]
[2023-12-25 19:22:46,402 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 19:22:46,402 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 19:22:46,403 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 19:22:46,403 INFO  L229       MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-25 19:22:46,404 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process
[2023-12-25 19:22:54,625 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 19:22:54,849 INFO  L262         TraceCheckSpWp]: Trace formula consists of 35296 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-12-25 19:22:54,922 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 19:22:55,246 INFO  L134       CoverageAnalysis]: Checked inductivity of 798 backedges. 50 proven. 0 refuted. 0 times theorem prover too weak. 748 trivial. 0 not checked.
[2023-12-25 19:22:55,247 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 19:22:55,247 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 19:22:55,247 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1687039640]
[2023-12-25 19:22:55,247 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 19:22:55,247 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1355366250]
[2023-12-25 19:22:55,247 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1355366250] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 19:22:55,247 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 19:22:55,247 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-12-25 19:22:55,248 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2104648279]
[2023-12-25 19:22:55,248 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 19:22:55,251 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-12-25 19:22:55,251 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 19:22:55,254 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-12-25 19:22:55,254 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-12-25 19:22:55,255 INFO  L87              Difference]: Start difference. First operand 10692 states and 17798 transitions. Second operand  has 7 states, 7 states have (on average 896.2857142857143) internal successors, (6274), 7 states have internal predecessors, (6274), 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)
[2023-12-25 19:22:55,710 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 19:22:55,711 INFO  L93              Difference]: Finished difference Result 28835 states and 47994 transitions.
[2023-12-25 19:22:55,711 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-12-25 19:22:55,712 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 896.2857142857143) internal successors, (6274), 7 states have internal predecessors, (6274), 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 7021
[2023-12-25 19:22:55,717 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 19:22:55,736 INFO  L225             Difference]: With dead ends: 28835
[2023-12-25 19:22:55,736 INFO  L226             Difference]: Without dead ends: 19697
[2023-12-25 19:22:55,748 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 7030 GetRequests, 7018 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-12-25 19:22:55,748 INFO  L413           NwaCegarLoop]: 17625 mSDtfsCounter, 43551 mSDsluCounter, 68614 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43551 SdHoareTripleChecker+Valid, 86239 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-12-25 19:22:55,748 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [43551 Valid, 86239 Invalid, 48 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-12-25 19:22:55,764 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 19697 states.
[2023-12-25 19:22:55,873 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 19697 to 10694.
[2023-12-25 19:22:55,883 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 10694 states, 10693 states have (on average 1.6646404189656785) internal successors, (17800), 10693 states have internal predecessors, (17800), 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)
[2023-12-25 19:22:55,894 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 10694 states to 10694 states and 17800 transitions.
[2023-12-25 19:22:55,894 INFO  L78                 Accepts]: Start accepts. Automaton has 10694 states and 17800 transitions. Word has length 7021
[2023-12-25 19:22:55,897 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 19:22:55,898 INFO  L495      AbstractCegarLoop]: Abstraction has 10694 states and 17800 transitions.
[2023-12-25 19:22:55,899 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 896.2857142857143) internal successors, (6274), 7 states have internal predecessors, (6274), 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)
[2023-12-25 19:22:55,899 INFO  L276                IsEmpty]: Start isEmpty. Operand 10694 states and 17800 transitions.
[2023-12-25 19:22:56,260 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 7023
[2023-12-25 19:22:56,261 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 19:22:56,262 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-12-25 19:22:56,376 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0
[2023-12-25 19:22:56,488 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33
[2023-12-25 19:22:56,489 INFO  L420      AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 19:22:56,489 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 19:22:56,489 INFO  L85        PathProgramCache]: Analyzing trace with hash -1022484666, now seen corresponding path program 1 times
[2023-12-25 19:22:56,489 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 19:22:56,489 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1444479448]
[2023-12-25 19:22:56,490 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 19:22:56,490 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 19:22:56,980 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 19:22:56,980 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1249353576]
[2023-12-25 19:22:56,982 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 19:22:56,982 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 19:22:56,982 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 19:22:57,005 INFO  L229       MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-25 19:22:57,007 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process
[2023-12-25 19:23:05,522 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 19:23:05,737 INFO  L262         TraceCheckSpWp]: Trace formula consists of 35299 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-12-25 19:23:05,812 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 19:23:06,105 INFO  L134       CoverageAnalysis]: Checked inductivity of 798 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 746 trivial. 0 not checked.
[2023-12-25 19:23:06,105 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 19:23:06,105 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 19:23:06,106 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1444479448]
[2023-12-25 19:23:06,106 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 19:23:06,106 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1249353576]
[2023-12-25 19:23:06,106 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1249353576] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 19:23:06,106 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 19:23:06,106 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-12-25 19:23:06,106 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1977130123]
[2023-12-25 19:23:06,106 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 19:23:06,109 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-12-25 19:23:06,109 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 19:23:06,112 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-12-25 19:23:06,112 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-12-25 19:23:06,112 INFO  L87              Difference]: Start difference. First operand 10694 states and 17800 transitions. Second operand  has 7 states, 7 states have (on average 896.7142857142857) internal successors, (6277), 7 states have internal predecessors, (6277), 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)
[2023-12-25 19:23:06,635 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 19:23:06,637 INFO  L93              Difference]: Finished difference Result 28841 states and 48000 transitions.
[2023-12-25 19:23:06,637 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-12-25 19:23:06,641 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 896.7142857142857) internal successors, (6277), 7 states have internal predecessors, (6277), 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 7022
[2023-12-25 19:23:06,646 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 19:23:06,663 INFO  L225             Difference]: With dead ends: 28841
[2023-12-25 19:23:06,664 INFO  L226             Difference]: Without dead ends: 19698
[2023-12-25 19:23:06,674 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 7031 GetRequests, 7019 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-12-25 19:23:06,674 INFO  L413           NwaCegarLoop]: 17620 mSDtfsCounter, 43550 mSDsluCounter, 68599 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43550 SdHoareTripleChecker+Valid, 86219 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-12-25 19:23:06,674 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [43550 Valid, 86219 Invalid, 48 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-12-25 19:23:06,688 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 19698 states.
[2023-12-25 19:23:06,783 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 19698 to 10696.
[2023-12-25 19:23:06,792 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 10696 states, 10695 states have (on average 1.664516129032258) internal successors, (17802), 10695 states have internal predecessors, (17802), 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)
[2023-12-25 19:23:06,802 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 10696 states to 10696 states and 17802 transitions.
[2023-12-25 19:23:06,802 INFO  L78                 Accepts]: Start accepts. Automaton has 10696 states and 17802 transitions. Word has length 7022
[2023-12-25 19:23:06,805 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 19:23:06,805 INFO  L495      AbstractCegarLoop]: Abstraction has 10696 states and 17802 transitions.
[2023-12-25 19:23:06,806 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 896.7142857142857) internal successors, (6277), 7 states have internal predecessors, (6277), 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)
[2023-12-25 19:23:06,806 INFO  L276                IsEmpty]: Start isEmpty. Operand 10696 states and 17802 transitions.
[2023-12-25 19:23:07,081 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 7024
[2023-12-25 19:23:07,082 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 19:23:07,083 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-12-25 19:23:07,187 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Ended with exit code 0
[2023-12-25 19:23:07,304 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,32 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 19:23:07,305 INFO  L420      AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 19:23:07,305 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 19:23:07,306 INFO  L85        PathProgramCache]: Analyzing trace with hash -495280996, now seen corresponding path program 1 times
[2023-12-25 19:23:07,306 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 19:23:07,306 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [586103386]
[2023-12-25 19:23:07,306 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 19:23:07,306 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 19:23:07,771 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 19:23:07,771 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [933741641]
[2023-12-25 19:23:07,773 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 19:23:07,773 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 19:23:07,773 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 19:23:07,774 INFO  L229       MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-25 19:23:07,774 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process
[2023-12-25 19:23:15,993 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 19:23:16,211 INFO  L262         TraceCheckSpWp]: Trace formula consists of 35302 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-12-25 19:23:16,287 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 19:23:16,629 INFO  L134       CoverageAnalysis]: Checked inductivity of 798 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 744 trivial. 0 not checked.
[2023-12-25 19:23:16,629 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 19:23:16,629 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 19:23:16,629 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [586103386]
[2023-12-25 19:23:16,629 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 19:23:16,630 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [933741641]
[2023-12-25 19:23:16,630 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [933741641] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 19:23:16,630 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 19:23:16,630 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-12-25 19:23:16,630 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1624304320]
[2023-12-25 19:23:16,630 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 19:23:16,633 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-12-25 19:23:16,633 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 19:23:16,636 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-12-25 19:23:16,636 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-12-25 19:23:16,636 INFO  L87              Difference]: Start difference. First operand 10696 states and 17802 transitions. Second operand  has 7 states, 7 states have (on average 897.1428571428571) internal successors, (6280), 7 states have internal predecessors, (6280), 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)
[2023-12-25 19:23:17,148 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 19:23:17,148 INFO  L93              Difference]: Finished difference Result 28847 states and 48006 transitions.
[2023-12-25 19:23:17,148 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-12-25 19:23:17,150 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 897.1428571428571) internal successors, (6280), 7 states have internal predecessors, (6280), 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 7023
[2023-12-25 19:23:17,154 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 19:23:17,168 INFO  L225             Difference]: With dead ends: 28847
[2023-12-25 19:23:17,168 INFO  L226             Difference]: Without dead ends: 19699
[2023-12-25 19:23:17,177 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 7032 GetRequests, 7020 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-12-25 19:23:17,177 INFO  L413           NwaCegarLoop]: 17615 mSDtfsCounter, 43549 mSDsluCounter, 68584 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43549 SdHoareTripleChecker+Valid, 86199 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-12-25 19:23:17,177 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [43549 Valid, 86199 Invalid, 48 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-12-25 19:23:17,191 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 19699 states.
[2023-12-25 19:23:17,284 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 19699 to 10698.
[2023-12-25 19:23:17,294 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 10698 states, 10697 states have (on average 1.664391885575395) internal successors, (17804), 10697 states have internal predecessors, (17804), 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)
[2023-12-25 19:23:17,304 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 10698 states to 10698 states and 17804 transitions.
[2023-12-25 19:23:17,305 INFO  L78                 Accepts]: Start accepts. Automaton has 10698 states and 17804 transitions. Word has length 7023
[2023-12-25 19:23:17,308 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 19:23:17,308 INFO  L495      AbstractCegarLoop]: Abstraction has 10698 states and 17804 transitions.
[2023-12-25 19:23:17,309 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 897.1428571428571) internal successors, (6280), 7 states have internal predecessors, (6280), 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)
[2023-12-25 19:23:17,309 INFO  L276                IsEmpty]: Start isEmpty. Operand 10698 states and 17804 transitions.
[2023-12-25 19:23:17,617 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 7025
[2023-12-25 19:23:17,617 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 19:23:17,619 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-12-25 19:23:17,726 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Forceful destruction successful, exit code 0
[2023-12-25 19:23:17,838 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35,33 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 19:23:17,839 INFO  L420      AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 19:23:17,839 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 19:23:17,840 INFO  L85        PathProgramCache]: Analyzing trace with hash -1934612052, now seen corresponding path program 1 times
[2023-12-25 19:23:17,840 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 19:23:17,840 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [666571471]
[2023-12-25 19:23:17,840 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 19:23:17,841 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 19:23:18,446 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 19:23:18,446 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1231817595]
[2023-12-25 19:23:18,447 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 19:23:18,447 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 19:23:18,447 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 19:23:18,448 INFO  L229       MonitoredProcess]: Starting monitored process 34 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-25 19:23:18,450 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process
[2023-12-25 19:23:26,643 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 19:23:26,867 INFO  L262         TraceCheckSpWp]: Trace formula consists of 35305 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-12-25 19:23:26,946 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 19:23:27,379 INFO  L134       CoverageAnalysis]: Checked inductivity of 798 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 742 trivial. 0 not checked.
[2023-12-25 19:23:27,379 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 19:23:27,380 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 19:23:27,380 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [666571471]
[2023-12-25 19:23:27,380 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 19:23:27,380 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1231817595]
[2023-12-25 19:23:27,380 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1231817595] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 19:23:27,380 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 19:23:27,380 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-12-25 19:23:27,380 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1040873679]
[2023-12-25 19:23:27,380 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 19:23:27,383 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-12-25 19:23:27,383 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 19:23:27,385 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-12-25 19:23:27,386 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-12-25 19:23:27,386 INFO  L87              Difference]: Start difference. First operand 10698 states and 17804 transitions. Second operand  has 7 states, 7 states have (on average 897.5714285714286) internal successors, (6283), 7 states have internal predecessors, (6283), 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)
[2023-12-25 19:23:27,807 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 19:23:27,807 INFO  L93              Difference]: Finished difference Result 28853 states and 48012 transitions.
[2023-12-25 19:23:27,808 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-12-25 19:23:27,809 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 897.5714285714286) internal successors, (6283), 7 states have internal predecessors, (6283), 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 7024
[2023-12-25 19:23:27,813 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 19:23:27,830 INFO  L225             Difference]: With dead ends: 28853
[2023-12-25 19:23:27,830 INFO  L226             Difference]: Without dead ends: 19700
[2023-12-25 19:23:27,840 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 7033 GetRequests, 7021 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-12-25 19:23:27,841 INFO  L413           NwaCegarLoop]: 17610 mSDtfsCounter, 43548 mSDsluCounter, 68569 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43548 SdHoareTripleChecker+Valid, 86179 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-12-25 19:23:27,841 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [43548 Valid, 86179 Invalid, 48 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-12-25 19:23:27,854 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 19700 states.
[2023-12-25 19:23:27,945 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 19700 to 10700.
[2023-12-25 19:23:27,954 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 10700 states, 10699 states have (on average 1.664267688569025) internal successors, (17806), 10699 states have internal predecessors, (17806), 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)
[2023-12-25 19:23:27,964 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 10700 states to 10700 states and 17806 transitions.
[2023-12-25 19:23:27,965 INFO  L78                 Accepts]: Start accepts. Automaton has 10700 states and 17806 transitions. Word has length 7024
[2023-12-25 19:23:27,968 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 19:23:27,968 INFO  L495      AbstractCegarLoop]: Abstraction has 10700 states and 17806 transitions.
[2023-12-25 19:23:27,969 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 897.5714285714286) internal successors, (6283), 7 states have internal predecessors, (6283), 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)
[2023-12-25 19:23:27,969 INFO  L276                IsEmpty]: Start isEmpty. Operand 10700 states and 17806 transitions.
[2023-12-25 19:23:28,262 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 7026
[2023-12-25 19:23:28,262 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 19:23:28,263 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-12-25 19:23:28,372 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Ended with exit code 0
[2023-12-25 19:23:28,488 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36
[2023-12-25 19:23:28,489 INFO  L420      AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 19:23:28,489 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 19:23:28,489 INFO  L85        PathProgramCache]: Analyzing trace with hash -1758605256, now seen corresponding path program 1 times
[2023-12-25 19:23:28,489 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 19:23:28,490 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1439677993]
[2023-12-25 19:23:28,490 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 19:23:28,490 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 19:23:29,063 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 19:23:29,064 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [639809267]
[2023-12-25 19:23:29,065 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 19:23:29,065 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 19:23:29,065 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 19:23:29,066 INFO  L229       MonitoredProcess]: Starting monitored process 35 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-25 19:23:29,067 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process
[2023-12-25 19:23:37,495 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 19:23:37,723 INFO  L262         TraceCheckSpWp]: Trace formula consists of 35309 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-12-25 19:23:37,803 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 19:23:38,276 INFO  L134       CoverageAnalysis]: Checked inductivity of 798 backedges. 58 proven. 0 refuted. 0 times theorem prover too weak. 740 trivial. 0 not checked.
[2023-12-25 19:23:38,276 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 19:23:38,276 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 19:23:38,276 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1439677993]
[2023-12-25 19:23:38,276 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 19:23:38,276 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [639809267]
[2023-12-25 19:23:38,276 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [639809267] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 19:23:38,276 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 19:23:38,277 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-12-25 19:23:38,277 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [920121769]
[2023-12-25 19:23:38,277 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 19:23:38,280 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-12-25 19:23:38,280 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 19:23:38,282 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-12-25 19:23:38,282 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-12-25 19:23:38,283 INFO  L87              Difference]: Start difference. First operand 10700 states and 17806 transitions. Second operand  has 7 states, 7 states have (on average 898.0) internal successors, (6286), 7 states have internal predecessors, (6286), 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)
[2023-12-25 19:23:38,722 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 19:23:38,722 INFO  L93              Difference]: Finished difference Result 28859 states and 48018 transitions.
[2023-12-25 19:23:38,722 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-12-25 19:23:38,724 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 898.0) internal successors, (6286), 7 states have internal predecessors, (6286), 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 7025
[2023-12-25 19:23:38,728 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 19:23:38,746 INFO  L225             Difference]: With dead ends: 28859
[2023-12-25 19:23:38,746 INFO  L226             Difference]: Without dead ends: 19701
[2023-12-25 19:23:38,757 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 7034 GetRequests, 7022 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-12-25 19:23:38,758 INFO  L413           NwaCegarLoop]: 17605 mSDtfsCounter, 43547 mSDsluCounter, 68554 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43547 SdHoareTripleChecker+Valid, 86159 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-12-25 19:23:38,758 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [43547 Valid, 86159 Invalid, 48 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-12-25 19:23:38,773 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 19701 states.
[2023-12-25 19:23:38,876 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 19701 to 10702.
[2023-12-25 19:23:38,886 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 10702 states, 10701 states have (on average 1.664143537987104) internal successors, (17808), 10701 states have internal predecessors, (17808), 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)
[2023-12-25 19:23:38,897 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 10702 states to 10702 states and 17808 transitions.
[2023-12-25 19:23:38,897 INFO  L78                 Accepts]: Start accepts. Automaton has 10702 states and 17808 transitions. Word has length 7025
[2023-12-25 19:23:38,900 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 19:23:38,900 INFO  L495      AbstractCegarLoop]: Abstraction has 10702 states and 17808 transitions.
[2023-12-25 19:23:38,901 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 898.0) internal successors, (6286), 7 states have internal predecessors, (6286), 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)
[2023-12-25 19:23:38,902 INFO  L276                IsEmpty]: Start isEmpty. Operand 10702 states and 17808 transitions.
[2023-12-25 19:23:39,193 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 7027
[2023-12-25 19:23:39,193 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 19:23:39,194 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-12-25 19:23:39,293 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Forceful destruction successful, exit code 0
[2023-12-25 19:23:39,399 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37
[2023-12-25 19:23:39,400 INFO  L420      AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 19:23:39,400 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 19:23:39,401 INFO  L85        PathProgramCache]: Analyzing trace with hash 352059668, now seen corresponding path program 1 times
[2023-12-25 19:23:39,401 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 19:23:39,401 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1138901262]
[2023-12-25 19:23:39,401 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 19:23:39,401 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 19:23:39,913 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 19:23:39,914 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1839333336]
[2023-12-25 19:23:39,915 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 19:23:39,915 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 19:23:39,915 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 19:23:39,916 INFO  L229       MonitoredProcess]: Starting monitored process 36 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-25 19:23:39,922 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process
[2023-12-25 19:23:48,408 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 19:23:48,659 INFO  L262         TraceCheckSpWp]: Trace formula consists of 35312 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-12-25 19:23:48,804 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 19:23:49,087 INFO  L134       CoverageAnalysis]: Checked inductivity of 798 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 738 trivial. 0 not checked.
[2023-12-25 19:23:49,087 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 19:23:49,087 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 19:23:49,087 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1138901262]
[2023-12-25 19:23:49,087 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 19:23:49,090 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1839333336]
[2023-12-25 19:23:49,090 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1839333336] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 19:23:49,090 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 19:23:49,091 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-12-25 19:23:49,091 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1853021527]
[2023-12-25 19:23:49,091 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 19:23:49,094 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-12-25 19:23:49,094 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 19:23:49,097 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-12-25 19:23:49,097 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-12-25 19:23:49,098 INFO  L87              Difference]: Start difference. First operand 10702 states and 17808 transitions. Second operand  has 7 states, 7 states have (on average 898.4285714285714) internal successors, (6289), 7 states have internal predecessors, (6289), 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)
[2023-12-25 19:23:49,668 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 19:23:49,668 INFO  L93              Difference]: Finished difference Result 28865 states and 48024 transitions.
[2023-12-25 19:23:49,668 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-12-25 19:23:49,670 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 898.4285714285714) internal successors, (6289), 7 states have internal predecessors, (6289), 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 7026
[2023-12-25 19:23:49,674 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 19:23:49,687 INFO  L225             Difference]: With dead ends: 28865
[2023-12-25 19:23:49,687 INFO  L226             Difference]: Without dead ends: 19702
[2023-12-25 19:23:49,693 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 7035 GetRequests, 7023 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-12-25 19:23:49,693 INFO  L413           NwaCegarLoop]: 17600 mSDtfsCounter, 43546 mSDsluCounter, 68539 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43546 SdHoareTripleChecker+Valid, 86139 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-12-25 19:23:49,693 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [43546 Valid, 86139 Invalid, 48 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-12-25 19:23:49,706 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 19702 states.
[2023-12-25 19:23:49,791 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 19702 to 10704.
[2023-12-25 19:23:49,801 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 10704 states, 10703 states have (on average 1.6640194338036065) internal successors, (17810), 10703 states have internal predecessors, (17810), 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)
[2023-12-25 19:23:49,811 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 10704 states to 10704 states and 17810 transitions.
[2023-12-25 19:23:49,812 INFO  L78                 Accepts]: Start accepts. Automaton has 10704 states and 17810 transitions. Word has length 7026
[2023-12-25 19:23:49,815 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 19:23:49,815 INFO  L495      AbstractCegarLoop]: Abstraction has 10704 states and 17810 transitions.
[2023-12-25 19:23:49,816 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 898.4285714285714) internal successors, (6289), 7 states have internal predecessors, (6289), 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)
[2023-12-25 19:23:49,816 INFO  L276                IsEmpty]: Start isEmpty. Operand 10704 states and 17810 transitions.
[2023-12-25 19:23:50,128 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 7028
[2023-12-25 19:23:50,128 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 19:23:50,129 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-12-25 19:23:50,244 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Ended with exit code 0
[2023-12-25 19:23:50,346 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38
[2023-12-25 19:23:50,347 INFO  L420      AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 19:23:50,347 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 19:23:50,347 INFO  L85        PathProgramCache]: Analyzing trace with hash -1849964846, now seen corresponding path program 1 times
[2023-12-25 19:23:50,347 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 19:23:50,348 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1949613637]
[2023-12-25 19:23:50,348 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 19:23:50,348 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 19:23:50,863 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 19:23:50,863 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1412543101]
[2023-12-25 19:23:50,865 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 19:23:50,865 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 19:23:50,865 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 19:23:50,866 INFO  L229       MonitoredProcess]: Starting monitored process 37 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-25 19:23:50,868 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process
[2023-12-25 19:23:59,455 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 19:23:59,686 INFO  L262         TraceCheckSpWp]: Trace formula consists of 35315 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-12-25 19:23:59,764 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 19:24:00,257 INFO  L134       CoverageAnalysis]: Checked inductivity of 798 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 736 trivial. 0 not checked.
[2023-12-25 19:24:00,257 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 19:24:00,257 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 19:24:00,257 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1949613637]
[2023-12-25 19:24:00,257 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 19:24:00,257 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1412543101]
[2023-12-25 19:24:00,257 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1412543101] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 19:24:00,257 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 19:24:00,258 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-12-25 19:24:00,258 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [532709259]
[2023-12-25 19:24:00,258 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 19:24:00,261 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-12-25 19:24:00,261 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 19:24:00,263 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-12-25 19:24:00,263 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-12-25 19:24:00,264 INFO  L87              Difference]: Start difference. First operand 10704 states and 17810 transitions. Second operand  has 7 states, 7 states have (on average 898.8571428571429) internal successors, (6292), 7 states have internal predecessors, (6292), 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)
[2023-12-25 19:24:00,727 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 19:24:00,727 INFO  L93              Difference]: Finished difference Result 28871 states and 48030 transitions.
[2023-12-25 19:24:00,727 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-12-25 19:24:00,729 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 898.8571428571429) internal successors, (6292), 7 states have internal predecessors, (6292), 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 7027
[2023-12-25 19:24:00,734 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 19:24:00,752 INFO  L225             Difference]: With dead ends: 28871
[2023-12-25 19:24:00,753 INFO  L226             Difference]: Without dead ends: 19703
[2023-12-25 19:24:00,767 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 7036 GetRequests, 7024 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-12-25 19:24:00,768 INFO  L413           NwaCegarLoop]: 17595 mSDtfsCounter, 43545 mSDsluCounter, 68524 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43545 SdHoareTripleChecker+Valid, 86119 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-12-25 19:24:00,768 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [43545 Valid, 86119 Invalid, 48 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-12-25 19:24:00,884 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 19703 states.
[2023-12-25 19:24:00,972 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 19703 to 10706.
[2023-12-25 19:24:00,982 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 10706 states, 10705 states have (on average 1.6638953759925268) internal successors, (17812), 10705 states have internal predecessors, (17812), 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)
[2023-12-25 19:24:00,993 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 10706 states to 10706 states and 17812 transitions.
[2023-12-25 19:24:00,993 INFO  L78                 Accepts]: Start accepts. Automaton has 10706 states and 17812 transitions. Word has length 7027
[2023-12-25 19:24:00,997 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 19:24:00,997 INFO  L495      AbstractCegarLoop]: Abstraction has 10706 states and 17812 transitions.
[2023-12-25 19:24:00,998 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 898.8571428571429) internal successors, (6292), 7 states have internal predecessors, (6292), 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)
[2023-12-25 19:24:00,998 INFO  L276                IsEmpty]: Start isEmpty. Operand 10706 states and 17812 transitions.
[2023-12-25 19:24:01,279 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 7029
[2023-12-25 19:24:01,279 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 19:24:01,280 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-12-25 19:24:01,400 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Forceful destruction successful, exit code 0
[2023-12-25 19:24:01,496 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39
[2023-12-25 19:24:01,496 INFO  L420      AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 19:24:01,497 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 19:24:01,497 INFO  L85        PathProgramCache]: Analyzing trace with hash 1181142906, now seen corresponding path program 1 times
[2023-12-25 19:24:01,497 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 19:24:01,497 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1753485906]
[2023-12-25 19:24:01,498 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 19:24:01,498 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 19:24:02,154 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 19:24:02,154 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1894320631]
[2023-12-25 19:24:02,156 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 19:24:02,156 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 19:24:02,156 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 19:24:02,170 INFO  L229       MonitoredProcess]: Starting monitored process 38 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-25 19:24:02,194 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process
[2023-12-25 19:24:10,551 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 19:24:10,776 INFO  L262         TraceCheckSpWp]: Trace formula consists of 35318 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-12-25 19:24:10,854 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 19:24:11,331 INFO  L134       CoverageAnalysis]: Checked inductivity of 798 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 734 trivial. 0 not checked.
[2023-12-25 19:24:11,331 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 19:24:11,331 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 19:24:11,331 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1753485906]
[2023-12-25 19:24:11,332 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 19:24:11,332 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1894320631]
[2023-12-25 19:24:11,332 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1894320631] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 19:24:11,332 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 19:24:11,332 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-12-25 19:24:11,332 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [816807782]
[2023-12-25 19:24:11,332 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 19:24:11,335 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-12-25 19:24:11,335 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 19:24:11,338 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-12-25 19:24:11,338 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-12-25 19:24:11,339 INFO  L87              Difference]: Start difference. First operand 10706 states and 17812 transitions. Second operand  has 7 states, 7 states have (on average 899.2857142857143) internal successors, (6295), 7 states have internal predecessors, (6295), 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)
[2023-12-25 19:24:11,816 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 19:24:11,817 INFO  L93              Difference]: Finished difference Result 28877 states and 48036 transitions.
[2023-12-25 19:24:11,817 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-12-25 19:24:11,818 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 899.2857142857143) internal successors, (6295), 7 states have internal predecessors, (6295), 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 7028
[2023-12-25 19:24:11,823 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 19:24:11,842 INFO  L225             Difference]: With dead ends: 28877
[2023-12-25 19:24:11,842 INFO  L226             Difference]: Without dead ends: 19704
[2023-12-25 19:24:11,854 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 7037 GetRequests, 7025 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-12-25 19:24:11,854 INFO  L413           NwaCegarLoop]: 17590 mSDtfsCounter, 43544 mSDsluCounter, 68509 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43544 SdHoareTripleChecker+Valid, 86099 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-12-25 19:24:11,854 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [43544 Valid, 86099 Invalid, 48 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-12-25 19:24:11,870 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 19704 states.
[2023-12-25 19:24:11,979 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 19704 to 10708.
[2023-12-25 19:24:11,989 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 10708 states, 10707 states have (on average 1.6637713645278789) internal successors, (17814), 10707 states have internal predecessors, (17814), 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)
[2023-12-25 19:24:12,000 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 10708 states to 10708 states and 17814 transitions.
[2023-12-25 19:24:12,000 INFO  L78                 Accepts]: Start accepts. Automaton has 10708 states and 17814 transitions. Word has length 7028
[2023-12-25 19:24:12,004 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 19:24:12,004 INFO  L495      AbstractCegarLoop]: Abstraction has 10708 states and 17814 transitions.
[2023-12-25 19:24:12,005 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 899.2857142857143) internal successors, (6295), 7 states have internal predecessors, (6295), 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)
[2023-12-25 19:24:12,005 INFO  L276                IsEmpty]: Start isEmpty. Operand 10708 states and 17814 transitions.
[2023-12-25 19:24:12,460 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 7030
[2023-12-25 19:24:12,461 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 19:24:12,462 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-12-25 19:24:12,585 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Forceful destruction successful, exit code 0
[2023-12-25 19:24:12,686 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,38 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 19:24:12,687 INFO  L420      AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 19:24:12,687 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 19:24:12,688 INFO  L85        PathProgramCache]: Analyzing trace with hash 707060590, now seen corresponding path program 1 times
[2023-12-25 19:24:12,688 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 19:24:12,688 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1795344591]
[2023-12-25 19:24:12,688 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 19:24:12,688 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 19:24:13,250 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 19:24:13,251 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1873886655]
[2023-12-25 19:24:13,252 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 19:24:13,252 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 19:24:13,252 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 19:24:13,268 INFO  L229       MonitoredProcess]: Starting monitored process 39 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-25 19:24:13,269 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process
[2023-12-25 19:24:22,277 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 19:24:22,517 INFO  L262         TraceCheckSpWp]: Trace formula consists of 35322 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-12-25 19:24:22,625 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 19:24:22,970 INFO  L134       CoverageAnalysis]: Checked inductivity of 798 backedges. 66 proven. 0 refuted. 0 times theorem prover too weak. 732 trivial. 0 not checked.
[2023-12-25 19:24:22,970 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 19:24:22,970 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 19:24:22,970 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1795344591]
[2023-12-25 19:24:22,970 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 19:24:22,970 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1873886655]
[2023-12-25 19:24:22,970 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1873886655] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 19:24:22,970 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 19:24:22,971 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-12-25 19:24:22,971 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [428584997]
[2023-12-25 19:24:22,971 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 19:24:22,975 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-12-25 19:24:22,975 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 19:24:22,978 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-12-25 19:24:22,978 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-12-25 19:24:22,979 INFO  L87              Difference]: Start difference. First operand 10708 states and 17814 transitions. Second operand  has 7 states, 7 states have (on average 899.7142857142857) internal successors, (6298), 7 states have internal predecessors, (6298), 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)
[2023-12-25 19:24:23,495 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 19:24:23,496 INFO  L93              Difference]: Finished difference Result 28883 states and 48042 transitions.
[2023-12-25 19:24:23,496 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-12-25 19:24:23,497 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 899.7142857142857) internal successors, (6298), 7 states have internal predecessors, (6298), 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 7029
[2023-12-25 19:24:23,501 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 19:24:23,515 INFO  L225             Difference]: With dead ends: 28883
[2023-12-25 19:24:23,516 INFO  L226             Difference]: Without dead ends: 19705
[2023-12-25 19:24:23,523 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 7038 GetRequests, 7026 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-12-25 19:24:23,524 INFO  L413           NwaCegarLoop]: 17585 mSDtfsCounter, 43543 mSDsluCounter, 68494 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43543 SdHoareTripleChecker+Valid, 86079 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-12-25 19:24:23,524 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [43543 Valid, 86079 Invalid, 48 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-12-25 19:24:23,537 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 19705 states.
[2023-12-25 19:24:23,626 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 19705 to 10710.
[2023-12-25 19:24:23,635 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 10710 states, 10709 states have (on average 1.663647399383696) internal successors, (17816), 10709 states have internal predecessors, (17816), 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)
[2023-12-25 19:24:23,645 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 10710 states to 10710 states and 17816 transitions.
[2023-12-25 19:24:23,646 INFO  L78                 Accepts]: Start accepts. Automaton has 10710 states and 17816 transitions. Word has length 7029
[2023-12-25 19:24:23,649 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 19:24:23,649 INFO  L495      AbstractCegarLoop]: Abstraction has 10710 states and 17816 transitions.
[2023-12-25 19:24:23,650 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 899.7142857142857) internal successors, (6298), 7 states have internal predecessors, (6298), 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)
[2023-12-25 19:24:23,650 INFO  L276                IsEmpty]: Start isEmpty. Operand 10710 states and 17816 transitions.
[2023-12-25 19:24:23,938 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 7031
[2023-12-25 19:24:23,939 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 19:24:23,940 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-12-25 19:24:24,054 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Forceful destruction successful, exit code 0
[2023-12-25 19:24:24,153 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable41
[2023-12-25 19:24:24,154 INFO  L420      AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 19:24:24,154 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 19:24:24,155 INFO  L85        PathProgramCache]: Analyzing trace with hash -2111916062, now seen corresponding path program 1 times
[2023-12-25 19:24:24,155 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 19:24:24,155 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [631197926]
[2023-12-25 19:24:24,155 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 19:24:24,156 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 19:24:24,670 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 19:24:24,670 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [22819539]
[2023-12-25 19:24:24,671 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 19:24:24,671 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 19:24:24,672 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 19:24:24,673 INFO  L229       MonitoredProcess]: Starting monitored process 40 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-25 19:24:24,674 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process
[2023-12-25 19:24:33,035 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 19:24:33,266 INFO  L262         TraceCheckSpWp]: Trace formula consists of 35325 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-12-25 19:24:33,341 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 19:24:33,788 INFO  L134       CoverageAnalysis]: Checked inductivity of 798 backedges. 68 proven. 0 refuted. 0 times theorem prover too weak. 730 trivial. 0 not checked.
[2023-12-25 19:24:33,788 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 19:24:33,788 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 19:24:33,788 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [631197926]
[2023-12-25 19:24:33,788 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 19:24:33,788 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [22819539]
[2023-12-25 19:24:33,788 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [22819539] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 19:24:33,788 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 19:24:33,789 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-12-25 19:24:33,789 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1886740519]
[2023-12-25 19:24:33,789 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 19:24:33,792 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-12-25 19:24:33,792 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 19:24:33,794 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-12-25 19:24:33,794 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-12-25 19:24:33,795 INFO  L87              Difference]: Start difference. First operand 10710 states and 17816 transitions. Second operand  has 7 states, 7 states have (on average 900.1428571428571) internal successors, (6301), 7 states have internal predecessors, (6301), 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)
[2023-12-25 19:24:34,227 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 19:24:34,227 INFO  L93              Difference]: Finished difference Result 28889 states and 48048 transitions.
[2023-12-25 19:24:34,227 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-12-25 19:24:34,229 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 900.1428571428571) internal successors, (6301), 7 states have internal predecessors, (6301), 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 7030
[2023-12-25 19:24:34,233 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 19:24:34,252 INFO  L225             Difference]: With dead ends: 28889
[2023-12-25 19:24:34,252 INFO  L226             Difference]: Without dead ends: 19706
[2023-12-25 19:24:34,265 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 7039 GetRequests, 7027 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-12-25 19:24:34,265 INFO  L413           NwaCegarLoop]: 17580 mSDtfsCounter, 43542 mSDsluCounter, 68479 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43542 SdHoareTripleChecker+Valid, 86059 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-12-25 19:24:34,265 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [43542 Valid, 86059 Invalid, 48 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-12-25 19:24:34,280 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 19706 states.
[2023-12-25 19:24:34,377 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 19706 to 10712.
[2023-12-25 19:24:34,386 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 10712 states, 10711 states have (on average 1.6635234805340304) internal successors, (17818), 10711 states have internal predecessors, (17818), 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)
[2023-12-25 19:24:34,396 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 10712 states to 10712 states and 17818 transitions.
[2023-12-25 19:24:34,396 INFO  L78                 Accepts]: Start accepts. Automaton has 10712 states and 17818 transitions. Word has length 7030
[2023-12-25 19:24:34,399 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 19:24:34,399 INFO  L495      AbstractCegarLoop]: Abstraction has 10712 states and 17818 transitions.
[2023-12-25 19:24:34,401 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 900.1428571428571) internal successors, (6301), 7 states have internal predecessors, (6301), 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)
[2023-12-25 19:24:34,401 INFO  L276                IsEmpty]: Start isEmpty. Operand 10712 states and 17818 transitions.
[2023-12-25 19:24:34,681 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 7032
[2023-12-25 19:24:34,681 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 19:24:34,682 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-12-25 19:24:34,785 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Ended with exit code 0
[2023-12-25 19:24:34,887 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable42
[2023-12-25 19:24:34,888 INFO  L420      AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 19:24:34,888 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 19:24:34,889 INFO  L85        PathProgramCache]: Analyzing trace with hash -947554808, now seen corresponding path program 1 times
[2023-12-25 19:24:34,889 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 19:24:34,889 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1936973305]
[2023-12-25 19:24:34,889 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 19:24:34,889 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 19:24:35,376 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 19:24:35,376 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1318507525]
[2023-12-25 19:24:35,378 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 19:24:35,378 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 19:24:35,378 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 19:24:35,379 INFO  L229       MonitoredProcess]: Starting monitored process 41 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-25 19:24:35,380 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Waiting until timeout for monitored process
[2023-12-25 19:24:43,749 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 19:24:43,980 INFO  L262         TraceCheckSpWp]: Trace formula consists of 35328 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-12-25 19:24:44,063 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 19:24:44,401 INFO  L134       CoverageAnalysis]: Checked inductivity of 798 backedges. 70 proven. 0 refuted. 0 times theorem prover too weak. 728 trivial. 0 not checked.
[2023-12-25 19:24:44,401 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 19:24:44,401 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 19:24:44,401 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1936973305]
[2023-12-25 19:24:44,401 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 19:24:44,401 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1318507525]
[2023-12-25 19:24:44,401 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1318507525] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 19:24:44,401 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 19:24:44,402 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-12-25 19:24:44,402 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2098200698]
[2023-12-25 19:24:44,402 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 19:24:44,405 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-12-25 19:24:44,405 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 19:24:44,407 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-12-25 19:24:44,407 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-12-25 19:24:44,408 INFO  L87              Difference]: Start difference. First operand 10712 states and 17818 transitions. Second operand  has 7 states, 7 states have (on average 900.5714285714286) internal successors, (6304), 7 states have internal predecessors, (6304), 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)
[2023-12-25 19:24:44,879 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 19:24:44,879 INFO  L93              Difference]: Finished difference Result 28895 states and 48054 transitions.
[2023-12-25 19:24:44,879 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-12-25 19:24:44,881 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 900.5714285714286) internal successors, (6304), 7 states have internal predecessors, (6304), 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 7031
[2023-12-25 19:24:44,885 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 19:24:44,903 INFO  L225             Difference]: With dead ends: 28895
[2023-12-25 19:24:44,903 INFO  L226             Difference]: Without dead ends: 19707
[2023-12-25 19:24:44,914 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 7040 GetRequests, 7028 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-12-25 19:24:44,914 INFO  L413           NwaCegarLoop]: 17575 mSDtfsCounter, 43541 mSDsluCounter, 68464 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43541 SdHoareTripleChecker+Valid, 86039 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-12-25 19:24:44,915 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [43541 Valid, 86039 Invalid, 48 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-12-25 19:24:44,927 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 19707 states.
[2023-12-25 19:24:45,024 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 19707 to 10714.
[2023-12-25 19:24:45,033 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 10714 states, 10713 states have (on average 1.6633996079529543) internal successors, (17820), 10713 states have internal predecessors, (17820), 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)
[2023-12-25 19:24:45,043 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 10714 states to 10714 states and 17820 transitions.
[2023-12-25 19:24:45,044 INFO  L78                 Accepts]: Start accepts. Automaton has 10714 states and 17820 transitions. Word has length 7031
[2023-12-25 19:24:45,047 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 19:24:45,047 INFO  L495      AbstractCegarLoop]: Abstraction has 10714 states and 17820 transitions.
[2023-12-25 19:24:45,048 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 900.5714285714286) internal successors, (6304), 7 states have internal predecessors, (6304), 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)
[2023-12-25 19:24:45,048 INFO  L276                IsEmpty]: Start isEmpty. Operand 10714 states and 17820 transitions.
[2023-12-25 19:24:45,395 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 7033
[2023-12-25 19:24:45,395 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 19:24:45,397 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-12-25 19:24:45,496 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Forceful destruction successful, exit code 0
[2023-12-25 19:24:45,598 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable43
[2023-12-25 19:24:45,599 INFO  L420      AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 19:24:45,599 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 19:24:45,600 INFO  L85        PathProgramCache]: Analyzing trace with hash 418237000, now seen corresponding path program 1 times
[2023-12-25 19:24:45,600 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 19:24:45,600 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2018802992]
[2023-12-25 19:24:45,600 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 19:24:45,601 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 19:24:46,108 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 19:24:46,108 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [767417737]
[2023-12-25 19:24:46,110 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 19:24:46,110 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 19:24:46,110 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 19:24:46,111 INFO  L229       MonitoredProcess]: Starting monitored process 42 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-25 19:24:46,113 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Waiting until timeout for monitored process
[2023-12-25 19:24:55,051 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 19:24:55,305 INFO  L262         TraceCheckSpWp]: Trace formula consists of 35331 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-12-25 19:24:55,389 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 19:24:55,662 INFO  L134       CoverageAnalysis]: Checked inductivity of 798 backedges. 72 proven. 0 refuted. 0 times theorem prover too weak. 726 trivial. 0 not checked.
[2023-12-25 19:24:55,662 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 19:24:55,662 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 19:24:55,662 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2018802992]
[2023-12-25 19:24:55,663 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 19:24:55,663 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [767417737]
[2023-12-25 19:24:55,663 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [767417737] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 19:24:55,663 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 19:24:55,663 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-12-25 19:24:55,663 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [339579936]
[2023-12-25 19:24:55,663 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 19:24:55,666 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-12-25 19:24:55,667 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 19:24:55,669 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-12-25 19:24:55,669 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-12-25 19:24:55,670 INFO  L87              Difference]: Start difference. First operand 10714 states and 17820 transitions. Second operand  has 7 states, 7 states have (on average 901.0) internal successors, (6307), 7 states have internal predecessors, (6307), 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)
[2023-12-25 19:24:56,212 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 19:24:56,212 INFO  L93              Difference]: Finished difference Result 28901 states and 48060 transitions.
[2023-12-25 19:24:56,212 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-12-25 19:24:56,213 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 901.0) internal successors, (6307), 7 states have internal predecessors, (6307), 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 7032
[2023-12-25 19:24:56,218 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 19:24:56,236 INFO  L225             Difference]: With dead ends: 28901
[2023-12-25 19:24:56,236 INFO  L226             Difference]: Without dead ends: 19708
[2023-12-25 19:24:56,247 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 7041 GetRequests, 7029 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-12-25 19:24:56,249 INFO  L413           NwaCegarLoop]: 17570 mSDtfsCounter, 43540 mSDsluCounter, 68449 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43540 SdHoareTripleChecker+Valid, 86019 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-12-25 19:24:56,249 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [43540 Valid, 86019 Invalid, 48 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-12-25 19:24:56,263 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 19708 states.
[2023-12-25 19:24:56,355 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 19708 to 10716.
[2023-12-25 19:24:56,365 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 10716 states, 10715 states have (on average 1.6632757816145591) internal successors, (17822), 10715 states have internal predecessors, (17822), 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)
[2023-12-25 19:24:56,375 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 10716 states to 10716 states and 17822 transitions.
[2023-12-25 19:24:56,375 INFO  L78                 Accepts]: Start accepts. Automaton has 10716 states and 17822 transitions. Word has length 7032
[2023-12-25 19:24:56,379 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 19:24:56,379 INFO  L495      AbstractCegarLoop]: Abstraction has 10716 states and 17822 transitions.
[2023-12-25 19:24:56,379 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 901.0) internal successors, (6307), 7 states have internal predecessors, (6307), 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)
[2023-12-25 19:24:56,379 INFO  L276                IsEmpty]: Start isEmpty. Operand 10716 states and 17822 transitions.
[2023-12-25 19:24:56,693 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 7034
[2023-12-25 19:24:56,694 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 19:24:56,695 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-12-25 19:24:56,808 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Ended with exit code 0
[2023-12-25 19:24:56,915 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44,42 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 19:24:56,915 INFO  L420      AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 19:24:56,915 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 19:24:56,916 INFO  L85        PathProgramCache]: Analyzing trace with hash -1734509660, now seen corresponding path program 1 times
[2023-12-25 19:24:56,916 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 19:24:56,916 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [637789891]
[2023-12-25 19:24:56,917 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 19:24:56,917 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 19:24:57,442 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 19:24:57,443 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [706886799]
[2023-12-25 19:24:57,444 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 19:24:57,444 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 19:24:57,444 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 19:24:57,445 INFO  L229       MonitoredProcess]: Starting monitored process 43 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-25 19:24:57,467 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Waiting until timeout for monitored process
[2023-12-25 19:25:05,796 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 19:25:06,028 INFO  L262         TraceCheckSpWp]: Trace formula consists of 35335 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-12-25 19:25:06,213 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 19:25:06,570 INFO  L134       CoverageAnalysis]: Checked inductivity of 798 backedges. 74 proven. 0 refuted. 0 times theorem prover too weak. 724 trivial. 0 not checked.
[2023-12-25 19:25:06,570 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 19:25:06,571 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 19:25:06,571 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [637789891]
[2023-12-25 19:25:06,571 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 19:25:06,571 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [706886799]
[2023-12-25 19:25:06,571 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [706886799] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 19:25:06,571 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 19:25:06,571 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-12-25 19:25:06,571 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [126742464]
[2023-12-25 19:25:06,571 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 19:25:06,574 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-12-25 19:25:06,574 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 19:25:06,576 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-12-25 19:25:06,577 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-12-25 19:25:06,577 INFO  L87              Difference]: Start difference. First operand 10716 states and 17822 transitions. Second operand  has 7 states, 7 states have (on average 901.4285714285714) internal successors, (6310), 7 states have internal predecessors, (6310), 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)
[2023-12-25 19:25:07,056 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 19:25:07,056 INFO  L93              Difference]: Finished difference Result 28907 states and 48066 transitions.
[2023-12-25 19:25:07,056 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-12-25 19:25:07,057 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 901.4285714285714) internal successors, (6310), 7 states have internal predecessors, (6310), 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 7033
[2023-12-25 19:25:07,061 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 19:25:07,076 INFO  L225             Difference]: With dead ends: 28907
[2023-12-25 19:25:07,076 INFO  L226             Difference]: Without dead ends: 19709
[2023-12-25 19:25:07,083 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 7042 GetRequests, 7030 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-12-25 19:25:07,083 INFO  L413           NwaCegarLoop]: 17565 mSDtfsCounter, 43539 mSDsluCounter, 68434 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43539 SdHoareTripleChecker+Valid, 85999 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-12-25 19:25:07,083 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [43539 Valid, 85999 Invalid, 48 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-12-25 19:25:07,094 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 19709 states.
[2023-12-25 19:25:07,185 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 19709 to 10718.
[2023-12-25 19:25:07,195 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 10718 states, 10717 states have (on average 1.663152001492955) internal successors, (17824), 10717 states have internal predecessors, (17824), 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)
[2023-12-25 19:25:07,205 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 10718 states to 10718 states and 17824 transitions.
[2023-12-25 19:25:07,205 INFO  L78                 Accepts]: Start accepts. Automaton has 10718 states and 17824 transitions. Word has length 7033
[2023-12-25 19:25:07,208 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 19:25:07,208 INFO  L495      AbstractCegarLoop]: Abstraction has 10718 states and 17824 transitions.
[2023-12-25 19:25:07,209 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 901.4285714285714) internal successors, (6310), 7 states have internal predecessors, (6310), 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)
[2023-12-25 19:25:07,209 INFO  L276                IsEmpty]: Start isEmpty. Operand 10718 states and 17824 transitions.
[2023-12-25 19:25:07,505 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 7035
[2023-12-25 19:25:07,505 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 19:25:07,506 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-12-25 19:25:07,618 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Ended with exit code 0
[2023-12-25 19:25:07,730 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45,43 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 19:25:07,730 INFO  L420      AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 19:25:07,731 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 19:25:07,731 INFO  L85        PathProgramCache]: Analyzing trace with hash 1874969520, now seen corresponding path program 1 times
[2023-12-25 19:25:07,731 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 19:25:07,731 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1324509661]
[2023-12-25 19:25:07,732 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 19:25:07,732 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 19:25:08,256 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 19:25:08,256 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1213501472]
[2023-12-25 19:25:08,258 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 19:25:08,258 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 19:25:08,258 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 19:25:08,259 INFO  L229       MonitoredProcess]: Starting monitored process 44 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-25 19:25:08,261 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Waiting until timeout for monitored process
[2023-12-25 19:25:16,530 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 19:25:16,760 INFO  L262         TraceCheckSpWp]: Trace formula consists of 35338 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-12-25 19:25:16,839 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 19:25:17,248 INFO  L134       CoverageAnalysis]: Checked inductivity of 798 backedges. 76 proven. 0 refuted. 0 times theorem prover too weak. 722 trivial. 0 not checked.
[2023-12-25 19:25:17,248 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 19:25:17,249 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 19:25:17,249 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1324509661]
[2023-12-25 19:25:17,249 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 19:25:17,249 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1213501472]
[2023-12-25 19:25:17,249 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1213501472] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 19:25:17,249 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 19:25:17,249 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-12-25 19:25:17,249 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2140245012]
[2023-12-25 19:25:17,249 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 19:25:17,252 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-12-25 19:25:17,252 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 19:25:17,255 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-12-25 19:25:17,255 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-12-25 19:25:17,255 INFO  L87              Difference]: Start difference. First operand 10718 states and 17824 transitions. Second operand  has 7 states, 7 states have (on average 901.8571428571429) internal successors, (6313), 7 states have internal predecessors, (6313), 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)
[2023-12-25 19:25:17,716 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 19:25:17,717 INFO  L93              Difference]: Finished difference Result 28913 states and 48072 transitions.
[2023-12-25 19:25:17,717 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-12-25 19:25:17,718 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 901.8571428571429) internal successors, (6313), 7 states have internal predecessors, (6313), 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 7034
[2023-12-25 19:25:17,722 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 19:25:17,738 INFO  L225             Difference]: With dead ends: 28913
[2023-12-25 19:25:17,738 INFO  L226             Difference]: Without dead ends: 19710
[2023-12-25 19:25:17,747 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 7043 GetRequests, 7031 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-12-25 19:25:17,747 INFO  L413           NwaCegarLoop]: 17560 mSDtfsCounter, 43538 mSDsluCounter, 68419 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43538 SdHoareTripleChecker+Valid, 85979 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-12-25 19:25:17,747 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [43538 Valid, 85979 Invalid, 48 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-12-25 19:25:17,759 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 19710 states.
[2023-12-25 19:25:17,849 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 19710 to 10720.
[2023-12-25 19:25:17,858 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 10720 states, 10719 states have (on average 1.6630282675622725) internal successors, (17826), 10719 states have internal predecessors, (17826), 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)
[2023-12-25 19:25:17,867 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 10720 states to 10720 states and 17826 transitions.
[2023-12-25 19:25:17,867 INFO  L78                 Accepts]: Start accepts. Automaton has 10720 states and 17826 transitions. Word has length 7034
[2023-12-25 19:25:17,870 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 19:25:17,870 INFO  L495      AbstractCegarLoop]: Abstraction has 10720 states and 17826 transitions.
[2023-12-25 19:25:17,871 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 901.8571428571429) internal successors, (6313), 7 states have internal predecessors, (6313), 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)
[2023-12-25 19:25:17,871 INFO  L276                IsEmpty]: Start isEmpty. Operand 10720 states and 17826 transitions.
[2023-12-25 19:25:18,185 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 7036
[2023-12-25 19:25:18,185 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 19:25:18,187 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-12-25 19:25:18,297 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Forceful destruction successful, exit code 0
[2023-12-25 19:25:18,412 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable46
[2023-12-25 19:25:18,412 INFO  L420      AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 19:25:18,413 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 19:25:18,413 INFO  L85        PathProgramCache]: Analyzing trace with hash 1471490622, now seen corresponding path program 1 times
[2023-12-25 19:25:18,413 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 19:25:18,413 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1938049536]
[2023-12-25 19:25:18,414 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 19:25:18,414 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 19:25:18,891 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 19:25:18,891 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [470300029]
[2023-12-25 19:25:18,892 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 19:25:18,892 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 19:25:18,892 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 19:25:18,893 INFO  L229       MonitoredProcess]: Starting monitored process 45 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-25 19:25:18,895 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Waiting until timeout for monitored process
[2023-12-25 19:25:27,262 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 19:25:27,489 INFO  L262         TraceCheckSpWp]: Trace formula consists of 35341 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-12-25 19:25:27,566 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 19:25:27,905 INFO  L134       CoverageAnalysis]: Checked inductivity of 798 backedges. 78 proven. 0 refuted. 0 times theorem prover too weak. 720 trivial. 0 not checked.
[2023-12-25 19:25:27,905 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 19:25:27,905 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 19:25:27,905 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1938049536]
[2023-12-25 19:25:27,906 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 19:25:27,906 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [470300029]
[2023-12-25 19:25:27,906 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [470300029] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 19:25:27,906 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 19:25:27,906 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-12-25 19:25:27,906 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [689077034]
[2023-12-25 19:25:27,906 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 19:25:27,909 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-12-25 19:25:27,909 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 19:25:27,911 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-12-25 19:25:27,911 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-12-25 19:25:27,912 INFO  L87              Difference]: Start difference. First operand 10720 states and 17826 transitions. Second operand  has 7 states, 7 states have (on average 902.2857142857143) internal successors, (6316), 7 states have internal predecessors, (6316), 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)
[2023-12-25 19:25:28,410 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 19:25:28,410 INFO  L93              Difference]: Finished difference Result 28919 states and 48078 transitions.
[2023-12-25 19:25:28,410 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-12-25 19:25:28,412 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 902.2857142857143) internal successors, (6316), 7 states have internal predecessors, (6316), 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 7035
[2023-12-25 19:25:28,415 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 19:25:28,428 INFO  L225             Difference]: With dead ends: 28919
[2023-12-25 19:25:28,428 INFO  L226             Difference]: Without dead ends: 19711
[2023-12-25 19:25:28,434 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 7044 GetRequests, 7032 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-12-25 19:25:28,435 INFO  L413           NwaCegarLoop]: 17555 mSDtfsCounter, 43537 mSDsluCounter, 68404 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43537 SdHoareTripleChecker+Valid, 85959 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-12-25 19:25:28,435 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [43537 Valid, 85959 Invalid, 48 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-12-25 19:25:28,446 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 19711 states.
[2023-12-25 19:25:28,534 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 19711 to 10722.
[2023-12-25 19:25:28,544 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 10722 states, 10721 states have (on average 1.6629045797966608) internal successors, (17828), 10721 states have internal predecessors, (17828), 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)
[2023-12-25 19:25:28,553 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 10722 states to 10722 states and 17828 transitions.
[2023-12-25 19:25:28,553 INFO  L78                 Accepts]: Start accepts. Automaton has 10722 states and 17828 transitions. Word has length 7035
[2023-12-25 19:25:28,557 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 19:25:28,557 INFO  L495      AbstractCegarLoop]: Abstraction has 10722 states and 17828 transitions.
[2023-12-25 19:25:28,557 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 902.2857142857143) internal successors, (6316), 7 states have internal predecessors, (6316), 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)
[2023-12-25 19:25:28,557 INFO  L276                IsEmpty]: Start isEmpty. Operand 10722 states and 17828 transitions.
[2023-12-25 19:25:28,860 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 7037
[2023-12-25 19:25:28,860 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 19:25:28,861 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-12-25 19:25:28,976 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Ended with exit code 0
[2023-12-25 19:25:29,080 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable47
[2023-12-25 19:25:29,080 INFO  L420      AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 19:25:29,081 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 19:25:29,081 INFO  L85        PathProgramCache]: Analyzing trace with hash 798005782, now seen corresponding path program 1 times
[2023-12-25 19:25:29,082 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 19:25:29,082 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1276153980]
[2023-12-25 19:25:29,082 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 19:25:29,083 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 19:25:29,749 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 19:25:29,749 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [951996881]
[2023-12-25 19:25:29,751 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 19:25:29,751 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 19:25:29,751 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 19:25:29,753 INFO  L229       MonitoredProcess]: Starting monitored process 46 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-25 19:25:29,754 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Waiting until timeout for monitored process
[2023-12-25 19:25:38,224 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 19:25:38,455 INFO  L262         TraceCheckSpWp]: Trace formula consists of 35344 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-12-25 19:25:38,530 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 19:25:38,873 INFO  L134       CoverageAnalysis]: Checked inductivity of 798 backedges. 80 proven. 0 refuted. 0 times theorem prover too weak. 718 trivial. 0 not checked.
[2023-12-25 19:25:38,873 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 19:25:38,873 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 19:25:38,873 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1276153980]
[2023-12-25 19:25:38,873 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 19:25:38,873 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [951996881]
[2023-12-25 19:25:38,873 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [951996881] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 19:25:38,873 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 19:25:38,874 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-12-25 19:25:38,874 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [781900585]
[2023-12-25 19:25:38,874 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 19:25:38,877 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-12-25 19:25:38,877 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 19:25:38,879 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-12-25 19:25:38,879 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-12-25 19:25:38,880 INFO  L87              Difference]: Start difference. First operand 10722 states and 17828 transitions. Second operand  has 7 states, 7 states have (on average 902.7142857142857) internal successors, (6319), 7 states have internal predecessors, (6319), 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)
[2023-12-25 19:25:39,366 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 19:25:39,366 INFO  L93              Difference]: Finished difference Result 28925 states and 48084 transitions.
[2023-12-25 19:25:39,367 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-12-25 19:25:39,368 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 902.7142857142857) internal successors, (6319), 7 states have internal predecessors, (6319), 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 7036
[2023-12-25 19:25:39,372 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 19:25:39,388 INFO  L225             Difference]: With dead ends: 28925
[2023-12-25 19:25:39,388 INFO  L226             Difference]: Without dead ends: 19712
[2023-12-25 19:25:39,397 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 7045 GetRequests, 7033 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-12-25 19:25:39,398 INFO  L413           NwaCegarLoop]: 17550 mSDtfsCounter, 43536 mSDsluCounter, 68389 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43536 SdHoareTripleChecker+Valid, 85939 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-12-25 19:25:39,398 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [43536 Valid, 85939 Invalid, 48 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-12-25 19:25:39,410 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 19712 states.
[2023-12-25 19:25:39,501 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 19712 to 10724.
[2023-12-25 19:25:39,511 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 10724 states, 10723 states have (on average 1.6627809381702883) internal successors, (17830), 10723 states have internal predecessors, (17830), 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)
[2023-12-25 19:25:39,521 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 10724 states to 10724 states and 17830 transitions.
[2023-12-25 19:25:39,521 INFO  L78                 Accepts]: Start accepts. Automaton has 10724 states and 17830 transitions. Word has length 7036
[2023-12-25 19:25:39,524 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 19:25:39,524 INFO  L495      AbstractCegarLoop]: Abstraction has 10724 states and 17830 transitions.
[2023-12-25 19:25:39,525 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 902.7142857142857) internal successors, (6319), 7 states have internal predecessors, (6319), 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)
[2023-12-25 19:25:39,525 INFO  L276                IsEmpty]: Start isEmpty. Operand 10724 states and 17830 transitions.
[2023-12-25 19:25:39,829 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 7038
[2023-12-25 19:25:39,829 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 19:25:39,831 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-12-25 19:25:39,939 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Ended with exit code 0
[2023-12-25 19:25:40,043 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable48
[2023-12-25 19:25:40,044 INFO  L420      AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 19:25:40,044 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 19:25:40,045 INFO  L85        PathProgramCache]: Analyzing trace with hash -1649076006, now seen corresponding path program 1 times
[2023-12-25 19:25:40,045 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 19:25:40,045 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1584968522]
[2023-12-25 19:25:40,045 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 19:25:40,045 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 19:25:40,655 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 19:25:40,656 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2096903530]
[2023-12-25 19:25:40,657 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 19:25:40,657 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 19:25:40,657 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 19:25:40,658 INFO  L229       MonitoredProcess]: Starting monitored process 47 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-25 19:25:40,662 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Waiting until timeout for monitored process
[2023-12-25 19:25:49,060 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 19:25:49,287 INFO  L262         TraceCheckSpWp]: Trace formula consists of 35348 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-12-25 19:25:49,364 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 19:25:49,770 INFO  L134       CoverageAnalysis]: Checked inductivity of 798 backedges. 82 proven. 0 refuted. 0 times theorem prover too weak. 716 trivial. 0 not checked.
[2023-12-25 19:25:49,770 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 19:25:49,770 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 19:25:49,770 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1584968522]
[2023-12-25 19:25:49,770 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 19:25:49,770 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2096903530]
[2023-12-25 19:25:49,770 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [2096903530] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 19:25:49,770 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 19:25:49,771 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-12-25 19:25:49,771 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1115380904]
[2023-12-25 19:25:49,771 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 19:25:49,774 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-12-25 19:25:49,774 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 19:25:49,776 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-12-25 19:25:49,776 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-12-25 19:25:49,777 INFO  L87              Difference]: Start difference. First operand 10724 states and 17830 transitions. Second operand  has 7 states, 7 states have (on average 903.1428571428571) internal successors, (6322), 7 states have internal predecessors, (6322), 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)
[2023-12-25 19:25:50,203 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 19:25:50,204 INFO  L93              Difference]: Finished difference Result 28931 states and 48090 transitions.
[2023-12-25 19:25:50,204 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-12-25 19:25:50,205 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 903.1428571428571) internal successors, (6322), 7 states have internal predecessors, (6322), 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 7037
[2023-12-25 19:25:50,209 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 19:25:50,228 INFO  L225             Difference]: With dead ends: 28931
[2023-12-25 19:25:50,228 INFO  L226             Difference]: Without dead ends: 19713
[2023-12-25 19:25:50,238 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 7046 GetRequests, 7034 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-12-25 19:25:50,239 INFO  L413           NwaCegarLoop]: 17545 mSDtfsCounter, 43535 mSDsluCounter, 68374 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43535 SdHoareTripleChecker+Valid, 85919 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-12-25 19:25:50,239 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [43535 Valid, 85919 Invalid, 48 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-12-25 19:25:50,333 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 19713 states.
[2023-12-25 19:25:50,406 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 19713 to 10726.
[2023-12-25 19:25:50,416 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 10726 states, 10725 states have (on average 1.6626573426573426) internal successors, (17832), 10725 states have internal predecessors, (17832), 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)
[2023-12-25 19:25:50,426 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 10726 states to 10726 states and 17832 transitions.
[2023-12-25 19:25:50,426 INFO  L78                 Accepts]: Start accepts. Automaton has 10726 states and 17832 transitions. Word has length 7037
[2023-12-25 19:25:50,429 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 19:25:50,429 INFO  L495      AbstractCegarLoop]: Abstraction has 10726 states and 17832 transitions.
[2023-12-25 19:25:50,429 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 903.1428571428571) internal successors, (6322), 7 states have internal predecessors, (6322), 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)
[2023-12-25 19:25:50,430 INFO  L276                IsEmpty]: Start isEmpty. Operand 10726 states and 17832 transitions.
[2023-12-25 19:25:50,725 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 7039
[2023-12-25 19:25:50,725 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 19:25:50,727 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-12-25 19:25:50,830 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Forceful destruction successful, exit code 0
[2023-12-25 19:25:50,952 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49,47 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 19:25:50,952 INFO  L420      AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 19:25:50,953 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 19:25:50,953 INFO  L85        PathProgramCache]: Analyzing trace with hash 74491006, now seen corresponding path program 1 times
[2023-12-25 19:25:50,953 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 19:25:50,953 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [545630850]
[2023-12-25 19:25:50,954 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 19:25:50,954 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 19:25:51,457 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 19:25:51,458 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1636851992]
[2023-12-25 19:25:51,459 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 19:25:51,459 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 19:25:51,459 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 19:25:51,460 INFO  L229       MonitoredProcess]: Starting monitored process 48 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-25 19:25:51,462 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Waiting until timeout for monitored process
[2023-12-25 19:25:59,667 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 19:25:59,886 INFO  L262         TraceCheckSpWp]: Trace formula consists of 35351 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-12-25 19:25:59,960 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 19:26:00,307 INFO  L134       CoverageAnalysis]: Checked inductivity of 798 backedges. 84 proven. 0 refuted. 0 times theorem prover too weak. 714 trivial. 0 not checked.
[2023-12-25 19:26:00,307 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 19:26:00,307 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 19:26:00,307 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [545630850]
[2023-12-25 19:26:00,307 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 19:26:00,307 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1636851992]
[2023-12-25 19:26:00,307 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1636851992] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 19:26:00,307 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 19:26:00,308 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-12-25 19:26:00,308 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [451781770]
[2023-12-25 19:26:00,308 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 19:26:00,311 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-12-25 19:26:00,311 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 19:26:00,313 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-12-25 19:26:00,313 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-12-25 19:26:00,314 INFO  L87              Difference]: Start difference. First operand 10726 states and 17832 transitions. Second operand  has 7 states, 7 states have (on average 903.5714285714286) internal successors, (6325), 7 states have internal predecessors, (6325), 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)
[2023-12-25 19:26:00,802 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 19:26:00,802 INFO  L93              Difference]: Finished difference Result 28937 states and 48096 transitions.
[2023-12-25 19:26:00,803 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-12-25 19:26:00,804 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 903.5714285714286) internal successors, (6325), 7 states have internal predecessors, (6325), 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 7038
[2023-12-25 19:26:00,808 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 19:26:00,823 INFO  L225             Difference]: With dead ends: 28937
[2023-12-25 19:26:00,823 INFO  L226             Difference]: Without dead ends: 19714
[2023-12-25 19:26:00,831 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 7047 GetRequests, 7035 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-12-25 19:26:00,831 INFO  L413           NwaCegarLoop]: 17540 mSDtfsCounter, 43534 mSDsluCounter, 68359 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43534 SdHoareTripleChecker+Valid, 85899 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-12-25 19:26:00,831 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [43534 Valid, 85899 Invalid, 48 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-12-25 19:26:00,844 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 19714 states.
[2023-12-25 19:26:00,934 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 19714 to 10728.
[2023-12-25 19:26:00,943 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 10728 states, 10727 states have (on average 1.6625337932320314) internal successors, (17834), 10727 states have internal predecessors, (17834), 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)
[2023-12-25 19:26:00,953 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 10728 states to 10728 states and 17834 transitions.
[2023-12-25 19:26:00,953 INFO  L78                 Accepts]: Start accepts. Automaton has 10728 states and 17834 transitions. Word has length 7038
[2023-12-25 19:26:00,956 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 19:26:00,956 INFO  L495      AbstractCegarLoop]: Abstraction has 10728 states and 17834 transitions.
[2023-12-25 19:26:00,957 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 903.5714285714286) internal successors, (6325), 7 states have internal predecessors, (6325), 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)
[2023-12-25 19:26:00,957 INFO  L276                IsEmpty]: Start isEmpty. Operand 10728 states and 17834 transitions.
[2023-12-25 19:26:01,255 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 7040
[2023-12-25 19:26:01,255 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 19:26:01,257 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-12-25 19:26:01,358 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Forceful destruction successful, exit code 0
[2023-12-25 19:26:01,466 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50,48 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 19:26:01,466 INFO  L420      AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 19:26:01,467 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 19:26:01,467 INFO  L85        PathProgramCache]: Analyzing trace with hash -1352113292, now seen corresponding path program 1 times
[2023-12-25 19:26:01,467 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 19:26:01,467 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1682688987]
[2023-12-25 19:26:01,468 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 19:26:01,468 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 19:26:02,054 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 19:26:02,054 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [469680847]
[2023-12-25 19:26:02,056 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 19:26:02,056 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 19:26:02,056 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 19:26:02,057 INFO  L229       MonitoredProcess]: Starting monitored process 49 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-25 19:26:02,059 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Waiting until timeout for monitored process
[2023-12-25 19:26:09,827 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 19:26:10,049 INFO  L262         TraceCheckSpWp]: Trace formula consists of 35354 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-12-25 19:26:10,128 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 19:26:10,610 INFO  L134       CoverageAnalysis]: Checked inductivity of 798 backedges. 86 proven. 0 refuted. 0 times theorem prover too weak. 712 trivial. 0 not checked.
[2023-12-25 19:26:10,610 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 19:26:10,610 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 19:26:10,610 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1682688987]
[2023-12-25 19:26:10,610 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 19:26:10,610 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [469680847]
[2023-12-25 19:26:10,610 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [469680847] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 19:26:10,610 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 19:26:10,611 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-12-25 19:26:10,611 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1706712931]
[2023-12-25 19:26:10,611 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 19:26:10,614 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-12-25 19:26:10,614 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 19:26:10,618 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-12-25 19:26:10,618 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-12-25 19:26:10,618 INFO  L87              Difference]: Start difference. First operand 10728 states and 17834 transitions. Second operand  has 7 states, 7 states have (on average 904.0) internal successors, (6328), 7 states have internal predecessors, (6328), 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)
[2023-12-25 19:26:11,052 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 19:26:11,052 INFO  L93              Difference]: Finished difference Result 28943 states and 48102 transitions.
[2023-12-25 19:26:11,052 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-12-25 19:26:11,054 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 904.0) internal successors, (6328), 7 states have internal predecessors, (6328), 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 7039
[2023-12-25 19:26:11,059 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 19:26:11,078 INFO  L225             Difference]: With dead ends: 28943
[2023-12-25 19:26:11,078 INFO  L226             Difference]: Without dead ends: 19715
[2023-12-25 19:26:11,090 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 7048 GetRequests, 7036 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-12-25 19:26:11,091 INFO  L413           NwaCegarLoop]: 17535 mSDtfsCounter, 43533 mSDsluCounter, 68344 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43533 SdHoareTripleChecker+Valid, 85879 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-12-25 19:26:11,091 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [43533 Valid, 85879 Invalid, 48 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-12-25 19:26:11,106 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 19715 states.
[2023-12-25 19:26:11,287 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 19715 to 10730.
[2023-12-25 19:26:11,296 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 10730 states, 10729 states have (on average 1.6624102898685804) internal successors, (17836), 10729 states have internal predecessors, (17836), 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)
[2023-12-25 19:26:11,306 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 10730 states to 10730 states and 17836 transitions.
[2023-12-25 19:26:11,306 INFO  L78                 Accepts]: Start accepts. Automaton has 10730 states and 17836 transitions. Word has length 7039
[2023-12-25 19:26:11,309 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 19:26:11,309 INFO  L495      AbstractCegarLoop]: Abstraction has 10730 states and 17836 transitions.
[2023-12-25 19:26:11,310 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 904.0) internal successors, (6328), 7 states have internal predecessors, (6328), 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)
[2023-12-25 19:26:11,310 INFO  L276                IsEmpty]: Start isEmpty. Operand 10730 states and 17836 transitions.
[2023-12-25 19:26:11,599 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 7041
[2023-12-25 19:26:11,599 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 19:26:11,600 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-12-25 19:26:11,699 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Forceful destruction successful, exit code 0
[2023-12-25 19:26:11,812 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51,49 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 19:26:11,812 INFO  L420      AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 19:26:11,813 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 19:26:11,813 INFO  L85        PathProgramCache]: Analyzing trace with hash -690307356, now seen corresponding path program 1 times
[2023-12-25 19:26:11,813 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 19:26:11,813 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1543161966]
[2023-12-25 19:26:11,814 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 19:26:11,814 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 19:26:12,273 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 19:26:12,274 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [16736533]
[2023-12-25 19:26:12,275 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 19:26:12,275 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 19:26:12,275 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 19:26:12,276 INFO  L229       MonitoredProcess]: Starting monitored process 50 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-25 19:26:12,277 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Waiting until timeout for monitored process
[2023-12-25 19:26:20,262 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 19:26:20,487 INFO  L262         TraceCheckSpWp]: Trace formula consists of 35357 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-12-25 19:26:20,741 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 19:26:21,091 INFO  L134       CoverageAnalysis]: Checked inductivity of 798 backedges. 88 proven. 0 refuted. 0 times theorem prover too weak. 710 trivial. 0 not checked.
[2023-12-25 19:26:21,091 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 19:26:21,091 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 19:26:21,092 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1543161966]
[2023-12-25 19:26:21,092 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 19:26:21,092 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [16736533]
[2023-12-25 19:26:21,092 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [16736533] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 19:26:21,092 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 19:26:21,092 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-12-25 19:26:21,092 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [93300042]
[2023-12-25 19:26:21,092 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 19:26:21,095 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-12-25 19:26:21,095 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 19:26:21,098 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-12-25 19:26:21,098 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-12-25 19:26:21,098 INFO  L87              Difference]: Start difference. First operand 10730 states and 17836 transitions. Second operand  has 7 states, 7 states have (on average 904.4285714285714) internal successors, (6331), 7 states have internal predecessors, (6331), 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)
[2023-12-25 19:26:21,523 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 19:26:21,523 INFO  L93              Difference]: Finished difference Result 28949 states and 48108 transitions.
[2023-12-25 19:26:21,523 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-12-25 19:26:21,525 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 904.4285714285714) internal successors, (6331), 7 states have internal predecessors, (6331), 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 7040
[2023-12-25 19:26:21,529 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 19:26:21,547 INFO  L225             Difference]: With dead ends: 28949
[2023-12-25 19:26:21,547 INFO  L226             Difference]: Without dead ends: 19716
[2023-12-25 19:26:21,557 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 7049 GetRequests, 7037 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-12-25 19:26:21,558 INFO  L413           NwaCegarLoop]: 17530 mSDtfsCounter, 43532 mSDsluCounter, 68329 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43532 SdHoareTripleChecker+Valid, 85859 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-12-25 19:26:21,558 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [43532 Valid, 85859 Invalid, 48 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-12-25 19:26:21,572 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 19716 states.
[2023-12-25 19:26:21,670 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 19716 to 10732.
[2023-12-25 19:26:21,682 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 10732 states, 10731 states have (on average 1.6622868325412357) internal successors, (17838), 10731 states have internal predecessors, (17838), 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)
[2023-12-25 19:26:21,694 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 10732 states to 10732 states and 17838 transitions.
[2023-12-25 19:26:21,694 INFO  L78                 Accepts]: Start accepts. Automaton has 10732 states and 17838 transitions. Word has length 7040
[2023-12-25 19:26:21,698 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 19:26:21,698 INFO  L495      AbstractCegarLoop]: Abstraction has 10732 states and 17838 transitions.
[2023-12-25 19:26:21,699 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 904.4285714285714) internal successors, (6331), 7 states have internal predecessors, (6331), 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)
[2023-12-25 19:26:21,699 INFO  L276                IsEmpty]: Start isEmpty. Operand 10732 states and 17838 transitions.
[2023-12-25 19:26:22,029 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 7042
[2023-12-25 19:26:22,029 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 19:26:22,031 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-12-25 19:26:22,138 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Forceful destruction successful, exit code 0
[2023-12-25 19:26:22,256 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 50 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable52
[2023-12-25 19:26:22,256 INFO  L420      AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 19:26:22,257 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 19:26:22,257 INFO  L85        PathProgramCache]: Analyzing trace with hash 1305033488, now seen corresponding path program 1 times
[2023-12-25 19:26:22,257 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 19:26:22,257 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1044547769]
[2023-12-25 19:26:22,258 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 19:26:22,258 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 19:26:22,790 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 19:26:22,790 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [596147144]
[2023-12-25 19:26:22,792 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 19:26:22,792 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 19:26:22,792 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 19:26:22,793 INFO  L229       MonitoredProcess]: Starting monitored process 51 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-25 19:26:22,793 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Waiting until timeout for monitored process
[2023-12-25 19:26:30,803 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 19:26:31,038 INFO  L262         TraceCheckSpWp]: Trace formula consists of 35361 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-12-25 19:26:31,112 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 19:26:31,455 INFO  L134       CoverageAnalysis]: Checked inductivity of 798 backedges. 90 proven. 0 refuted. 0 times theorem prover too weak. 708 trivial. 0 not checked.
[2023-12-25 19:26:31,456 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 19:26:31,456 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 19:26:31,456 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1044547769]
[2023-12-25 19:26:31,456 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 19:26:31,456 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [596147144]
[2023-12-25 19:26:31,456 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [596147144] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 19:26:31,456 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 19:26:31,457 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-12-25 19:26:31,457 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1030625058]
[2023-12-25 19:26:31,457 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 19:26:31,460 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-12-25 19:26:31,460 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 19:26:31,463 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-12-25 19:26:31,463 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-12-25 19:26:31,464 INFO  L87              Difference]: Start difference. First operand 10732 states and 17838 transitions. Second operand  has 7 states, 7 states have (on average 904.8571428571429) internal successors, (6334), 7 states have internal predecessors, (6334), 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)
[2023-12-25 19:26:32,099 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 19:26:32,100 INFO  L93              Difference]: Finished difference Result 28955 states and 48114 transitions.
[2023-12-25 19:26:32,100 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-12-25 19:26:32,101 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 904.8571428571429) internal successors, (6334), 7 states have internal predecessors, (6334), 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 7041
[2023-12-25 19:26:32,105 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 19:26:32,125 INFO  L225             Difference]: With dead ends: 28955
[2023-12-25 19:26:32,125 INFO  L226             Difference]: Without dead ends: 19717
[2023-12-25 19:26:32,135 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 7050 GetRequests, 7038 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-12-25 19:26:32,135 INFO  L413           NwaCegarLoop]: 17525 mSDtfsCounter, 43531 mSDsluCounter, 68314 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43531 SdHoareTripleChecker+Valid, 85839 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-12-25 19:26:32,135 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [43531 Valid, 85839 Invalid, 48 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-12-25 19:26:32,149 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 19717 states.
[2023-12-25 19:26:32,243 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 19717 to 10734.
[2023-12-25 19:26:32,252 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 10734 states, 10733 states have (on average 1.6621634212242615) internal successors, (17840), 10733 states have internal predecessors, (17840), 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)
[2023-12-25 19:26:32,263 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 10734 states to 10734 states and 17840 transitions.
[2023-12-25 19:26:32,263 INFO  L78                 Accepts]: Start accepts. Automaton has 10734 states and 17840 transitions. Word has length 7041
[2023-12-25 19:26:32,267 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 19:26:32,267 INFO  L495      AbstractCegarLoop]: Abstraction has 10734 states and 17840 transitions.
[2023-12-25 19:26:32,268 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 904.8571428571429) internal successors, (6334), 7 states have internal predecessors, (6334), 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)
[2023-12-25 19:26:32,268 INFO  L276                IsEmpty]: Start isEmpty. Operand 10734 states and 17840 transitions.
[2023-12-25 19:26:32,541 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 7043
[2023-12-25 19:26:32,541 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 19:26:32,542 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-12-25 19:26:32,639 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Ended with exit code 0
[2023-12-25 19:26:32,760 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 51 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable53
[2023-12-25 19:26:32,761 INFO  L420      AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 19:26:32,761 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 19:26:32,761 INFO  L85        PathProgramCache]: Analyzing trace with hash 133618252, now seen corresponding path program 1 times
[2023-12-25 19:26:32,761 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 19:26:32,761 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1222720636]
[2023-12-25 19:26:32,762 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 19:26:32,762 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 19:26:33,222 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 19:26:33,223 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [515848106]
[2023-12-25 19:26:33,224 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 19:26:33,224 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 19:26:33,224 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 19:26:33,225 INFO  L229       MonitoredProcess]: Starting monitored process 52 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-25 19:26:33,226 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Waiting until timeout for monitored process
[2023-12-25 19:26:41,326 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 19:26:41,551 INFO  L262         TraceCheckSpWp]: Trace formula consists of 35364 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-12-25 19:26:41,627 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 19:26:42,134 INFO  L134       CoverageAnalysis]: Checked inductivity of 798 backedges. 92 proven. 0 refuted. 0 times theorem prover too weak. 706 trivial. 0 not checked.
[2023-12-25 19:26:42,134 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 19:26:42,134 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 19:26:42,134 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1222720636]
[2023-12-25 19:26:42,134 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 19:26:42,134 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [515848106]
[2023-12-25 19:26:42,134 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [515848106] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 19:26:42,134 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 19:26:42,135 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-12-25 19:26:42,135 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1867009239]
[2023-12-25 19:26:42,135 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 19:26:42,138 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-12-25 19:26:42,138 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 19:26:42,140 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-12-25 19:26:42,140 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-12-25 19:26:42,141 INFO  L87              Difference]: Start difference. First operand 10734 states and 17840 transitions. Second operand  has 7 states, 7 states have (on average 905.2857142857143) internal successors, (6337), 7 states have internal predecessors, (6337), 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)
[2023-12-25 19:26:42,570 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 19:26:42,570 INFO  L93              Difference]: Finished difference Result 28961 states and 48120 transitions.
[2023-12-25 19:26:42,571 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-12-25 19:26:42,572 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 905.2857142857143) internal successors, (6337), 7 states have internal predecessors, (6337), 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 7042
[2023-12-25 19:26:42,576 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 19:26:42,596 INFO  L225             Difference]: With dead ends: 28961
[2023-12-25 19:26:42,596 INFO  L226             Difference]: Without dead ends: 19718
[2023-12-25 19:26:42,607 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 7051 GetRequests, 7039 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-12-25 19:26:42,607 INFO  L413           NwaCegarLoop]: 17520 mSDtfsCounter, 43530 mSDsluCounter, 68299 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43530 SdHoareTripleChecker+Valid, 85819 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-12-25 19:26:42,607 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [43530 Valid, 85819 Invalid, 48 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-12-25 19:26:42,621 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 19718 states.
[2023-12-25 19:26:42,713 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 19718 to 10736.
[2023-12-25 19:26:42,722 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 10736 states, 10735 states have (on average 1.6620400558919421) internal successors, (17842), 10735 states have internal predecessors, (17842), 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)
[2023-12-25 19:26:42,732 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 10736 states to 10736 states and 17842 transitions.
[2023-12-25 19:26:42,732 INFO  L78                 Accepts]: Start accepts. Automaton has 10736 states and 17842 transitions. Word has length 7042
[2023-12-25 19:26:42,735 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 19:26:42,735 INFO  L495      AbstractCegarLoop]: Abstraction has 10736 states and 17842 transitions.
[2023-12-25 19:26:42,736 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 905.2857142857143) internal successors, (6337), 7 states have internal predecessors, (6337), 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)
[2023-12-25 19:26:42,737 INFO  L276                IsEmpty]: Start isEmpty. Operand 10736 states and 17842 transitions.
[2023-12-25 19:26:43,053 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 7044
[2023-12-25 19:26:43,054 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 19:26:43,055 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-12-25 19:26:43,153 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Forceful destruction successful, exit code 0
[2023-12-25 19:26:43,257 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54,52 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 19:26:43,257 INFO  L420      AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 19:26:43,257 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 19:26:43,258 INFO  L85        PathProgramCache]: Analyzing trace with hash 888971690, now seen corresponding path program 1 times
[2023-12-25 19:26:43,258 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 19:26:43,258 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [792572687]
[2023-12-25 19:26:43,259 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 19:26:43,259 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 19:26:43,763 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 19:26:43,763 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [852586462]
[2023-12-25 19:26:43,764 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 19:26:43,764 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 19:26:43,764 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 19:26:43,765 INFO  L229       MonitoredProcess]: Starting monitored process 53 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-25 19:26:43,767 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Waiting until timeout for monitored process
[2023-12-25 19:26:52,084 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 19:26:52,307 INFO  L262         TraceCheckSpWp]: Trace formula consists of 35367 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-12-25 19:26:52,382 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 19:26:52,766 INFO  L134       CoverageAnalysis]: Checked inductivity of 798 backedges. 94 proven. 0 refuted. 0 times theorem prover too weak. 704 trivial. 0 not checked.
[2023-12-25 19:26:52,766 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 19:26:52,767 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 19:26:52,767 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [792572687]
[2023-12-25 19:26:52,767 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 19:26:52,767 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [852586462]
[2023-12-25 19:26:52,767 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [852586462] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 19:26:52,767 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 19:26:52,767 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-12-25 19:26:52,768 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1971534737]
[2023-12-25 19:26:52,768 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 19:26:52,771 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-12-25 19:26:52,772 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 19:26:52,775 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-12-25 19:26:52,775 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-12-25 19:26:52,776 INFO  L87              Difference]: Start difference. First operand 10736 states and 17842 transitions. Second operand  has 7 states, 7 states have (on average 905.7142857142857) internal successors, (6340), 7 states have internal predecessors, (6340), 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)
[2023-12-25 19:26:53,384 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 19:26:53,384 INFO  L93              Difference]: Finished difference Result 28967 states and 48126 transitions.
[2023-12-25 19:26:53,384 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-12-25 19:26:53,385 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 905.7142857142857) internal successors, (6340), 7 states have internal predecessors, (6340), 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 7043
[2023-12-25 19:26:53,389 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 19:26:53,401 INFO  L225             Difference]: With dead ends: 28967
[2023-12-25 19:26:53,401 INFO  L226             Difference]: Without dead ends: 19719
[2023-12-25 19:26:53,406 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 7052 GetRequests, 7040 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-12-25 19:26:53,406 INFO  L413           NwaCegarLoop]: 17515 mSDtfsCounter, 43529 mSDsluCounter, 68284 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43529 SdHoareTripleChecker+Valid, 85799 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-12-25 19:26:53,407 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [43529 Valid, 85799 Invalid, 48 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-12-25 19:26:53,418 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 19719 states.
[2023-12-25 19:26:53,498 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 19719 to 10738.
[2023-12-25 19:26:53,507 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 10738 states, 10737 states have (on average 1.6619167365185805) internal successors, (17844), 10737 states have internal predecessors, (17844), 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)
[2023-12-25 19:26:53,516 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 10738 states to 10738 states and 17844 transitions.
[2023-12-25 19:26:53,517 INFO  L78                 Accepts]: Start accepts. Automaton has 10738 states and 17844 transitions. Word has length 7043
[2023-12-25 19:26:53,519 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 19:26:53,520 INFO  L495      AbstractCegarLoop]: Abstraction has 10738 states and 17844 transitions.
[2023-12-25 19:26:53,520 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 905.7142857142857) internal successors, (6340), 7 states have internal predecessors, (6340), 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)
[2023-12-25 19:26:53,520 INFO  L276                IsEmpty]: Start isEmpty. Operand 10738 states and 17844 transitions.
[2023-12-25 19:26:53,760 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 7045
[2023-12-25 19:26:53,761 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 19:26:53,762 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-12-25 19:26:53,857 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Forceful destruction successful, exit code 0
[2023-12-25 19:26:53,988 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 53 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable55
[2023-12-25 19:26:53,988 INFO  L420      AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 19:26:53,989 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 19:26:53,989 INFO  L85        PathProgramCache]: Analyzing trace with hash 1553447090, now seen corresponding path program 1 times
[2023-12-25 19:26:53,989 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 19:26:53,989 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1918930499]
[2023-12-25 19:26:53,990 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 19:26:53,990 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 19:26:54,477 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 19:26:54,477 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1184982481]
[2023-12-25 19:26:54,479 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 19:26:54,479 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 19:26:54,479 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 19:26:54,482 INFO  L229       MonitoredProcess]: Starting monitored process 54 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-25 19:26:54,482 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Waiting until timeout for monitored process
[2023-12-25 19:27:02,861 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 19:27:03,093 INFO  L262         TraceCheckSpWp]: Trace formula consists of 35370 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-12-25 19:27:03,171 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 19:27:03,502 INFO  L134       CoverageAnalysis]: Checked inductivity of 798 backedges. 96 proven. 0 refuted. 0 times theorem prover too weak. 702 trivial. 0 not checked.
[2023-12-25 19:27:03,502 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 19:27:03,502 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 19:27:03,502 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1918930499]
[2023-12-25 19:27:03,502 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 19:27:03,502 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1184982481]
[2023-12-25 19:27:03,502 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1184982481] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 19:27:03,502 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 19:27:03,503 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-12-25 19:27:03,503 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1660214573]
[2023-12-25 19:27:03,503 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 19:27:03,506 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-12-25 19:27:03,506 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 19:27:03,508 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-12-25 19:27:03,508 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-12-25 19:27:03,509 INFO  L87              Difference]: Start difference. First operand 10738 states and 17844 transitions. Second operand  has 7 states, 7 states have (on average 906.1428571428571) internal successors, (6343), 7 states have internal predecessors, (6343), 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)
[2023-12-25 19:27:03,933 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 19:27:03,934 INFO  L93              Difference]: Finished difference Result 28973 states and 48132 transitions.
[2023-12-25 19:27:03,934 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-12-25 19:27:03,935 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 906.1428571428571) internal successors, (6343), 7 states have internal predecessors, (6343), 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 7044
[2023-12-25 19:27:03,940 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 19:27:03,959 INFO  L225             Difference]: With dead ends: 28973
[2023-12-25 19:27:03,959 INFO  L226             Difference]: Without dead ends: 19720
[2023-12-25 19:27:03,970 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 7053 GetRequests, 7041 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-12-25 19:27:03,971 INFO  L413           NwaCegarLoop]: 17510 mSDtfsCounter, 43528 mSDsluCounter, 68269 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43528 SdHoareTripleChecker+Valid, 85779 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-12-25 19:27:03,971 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [43528 Valid, 85779 Invalid, 48 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-12-25 19:27:03,985 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 19720 states.
[2023-12-25 19:27:04,144 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 19720 to 10740.
[2023-12-25 19:27:04,154 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 10740 states, 10739 states have (on average 1.661793463078499) internal successors, (17846), 10739 states have internal predecessors, (17846), 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)
[2023-12-25 19:27:04,164 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 10740 states to 10740 states and 17846 transitions.
[2023-12-25 19:27:04,165 INFO  L78                 Accepts]: Start accepts. Automaton has 10740 states and 17846 transitions. Word has length 7044
[2023-12-25 19:27:04,168 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 19:27:04,168 INFO  L495      AbstractCegarLoop]: Abstraction has 10740 states and 17846 transitions.
[2023-12-25 19:27:04,168 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 906.1428571428571) internal successors, (6343), 7 states have internal predecessors, (6343), 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)
[2023-12-25 19:27:04,169 INFO  L276                IsEmpty]: Start isEmpty. Operand 10740 states and 17846 transitions.
[2023-12-25 19:27:04,452 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 7046
[2023-12-25 19:27:04,453 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 19:27:04,454 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-12-25 19:27:04,550 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Ended with exit code 0
[2023-12-25 19:27:04,676 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 54 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable56
[2023-12-25 19:27:04,676 INFO  L420      AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 19:27:04,676 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 19:27:04,677 INFO  L85        PathProgramCache]: Analyzing trace with hash 1987535430, now seen corresponding path program 1 times
[2023-12-25 19:27:04,677 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 19:27:04,677 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [229005351]
[2023-12-25 19:27:04,678 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 19:27:04,678 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 19:27:05,310 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 19:27:05,310 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1333587889]
[2023-12-25 19:27:05,311 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 19:27:05,311 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 19:27:05,312 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 19:27:05,312 INFO  L229       MonitoredProcess]: Starting monitored process 55 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-25 19:27:05,314 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Waiting until timeout for monitored process
[2023-12-25 19:27:13,767 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 19:27:13,995 INFO  L262         TraceCheckSpWp]: Trace formula consists of 35374 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-12-25 19:27:14,071 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 19:27:14,344 INFO  L134       CoverageAnalysis]: Checked inductivity of 798 backedges. 98 proven. 0 refuted. 0 times theorem prover too weak. 700 trivial. 0 not checked.
[2023-12-25 19:27:14,344 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 19:27:14,344 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 19:27:14,344 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [229005351]
[2023-12-25 19:27:14,344 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 19:27:14,344 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1333587889]
[2023-12-25 19:27:14,344 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1333587889] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 19:27:14,344 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 19:27:14,345 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-12-25 19:27:14,345 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1780892922]
[2023-12-25 19:27:14,345 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 19:27:14,348 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-12-25 19:27:14,348 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 19:27:14,350 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-12-25 19:27:14,350 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-12-25 19:27:14,351 INFO  L87              Difference]: Start difference. First operand 10740 states and 17846 transitions. Second operand  has 7 states, 7 states have (on average 906.5714285714286) internal successors, (6346), 7 states have internal predecessors, (6346), 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)
[2023-12-25 19:27:14,917 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 19:27:14,917 INFO  L93              Difference]: Finished difference Result 28979 states and 48138 transitions.
[2023-12-25 19:27:14,917 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-12-25 19:27:14,918 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 906.5714285714286) internal successors, (6346), 7 states have internal predecessors, (6346), 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 7045
[2023-12-25 19:27:14,922 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 19:27:14,939 INFO  L225             Difference]: With dead ends: 28979
[2023-12-25 19:27:14,939 INFO  L226             Difference]: Without dead ends: 19721
[2023-12-25 19:27:14,949 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 7054 GetRequests, 7042 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-12-25 19:27:14,949 INFO  L413           NwaCegarLoop]: 17505 mSDtfsCounter, 43527 mSDsluCounter, 68254 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43527 SdHoareTripleChecker+Valid, 85759 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-12-25 19:27:14,949 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [43527 Valid, 85759 Invalid, 48 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-12-25 19:27:14,962 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 19721 states.
[2023-12-25 19:27:15,055 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 19721 to 10742.
[2023-12-25 19:27:15,065 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 10742 states, 10741 states have (on average 1.6616702355460387) internal successors, (17848), 10741 states have internal predecessors, (17848), 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)
[2023-12-25 19:27:15,074 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 10742 states to 10742 states and 17848 transitions.
[2023-12-25 19:27:15,075 INFO  L78                 Accepts]: Start accepts. Automaton has 10742 states and 17848 transitions. Word has length 7045
[2023-12-25 19:27:15,078 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 19:27:15,078 INFO  L495      AbstractCegarLoop]: Abstraction has 10742 states and 17848 transitions.
[2023-12-25 19:27:15,078 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 906.5714285714286) internal successors, (6346), 7 states have internal predecessors, (6346), 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)
[2023-12-25 19:27:15,079 INFO  L276                IsEmpty]: Start isEmpty. Operand 10742 states and 17848 transitions.
[2023-12-25 19:27:15,426 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 7047
[2023-12-25 19:27:15,427 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 19:27:15,428 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-12-25 19:27:15,528 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Forceful destruction successful, exit code 0
[2023-12-25 19:27:15,640 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57,55 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 19:27:15,641 INFO  L420      AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 19:27:15,641 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 19:27:15,642 INFO  L85        PathProgramCache]: Analyzing trace with hash -1017125606, now seen corresponding path program 1 times
[2023-12-25 19:27:15,642 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 19:27:15,642 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1708956833]
[2023-12-25 19:27:15,642 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 19:27:15,642 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 19:27:16,173 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 19:27:16,173 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [22329584]
[2023-12-25 19:27:16,174 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 19:27:16,174 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 19:27:16,175 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 19:27:16,176 INFO  L229       MonitoredProcess]: Starting monitored process 56 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-25 19:27:16,176 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Waiting until timeout for monitored process
[2023-12-25 19:27:24,990 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 19:27:25,218 INFO  L262         TraceCheckSpWp]: Trace formula consists of 35377 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-12-25 19:27:25,301 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 19:27:25,669 INFO  L134       CoverageAnalysis]: Checked inductivity of 798 backedges. 100 proven. 0 refuted. 0 times theorem prover too weak. 698 trivial. 0 not checked.
[2023-12-25 19:27:25,670 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 19:27:25,670 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 19:27:25,670 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1708956833]
[2023-12-25 19:27:25,670 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 19:27:25,670 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [22329584]
[2023-12-25 19:27:25,670 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [22329584] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 19:27:25,670 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 19:27:25,670 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-12-25 19:27:25,671 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [89836727]
[2023-12-25 19:27:25,671 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 19:27:25,674 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-12-25 19:27:25,674 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 19:27:25,676 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-12-25 19:27:25,676 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-12-25 19:27:25,677 INFO  L87              Difference]: Start difference. First operand 10742 states and 17848 transitions. Second operand  has 7 states, 7 states have (on average 907.0) internal successors, (6349), 7 states have internal predecessors, (6349), 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)
[2023-12-25 19:27:26,208 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 19:27:26,208 INFO  L93              Difference]: Finished difference Result 28985 states and 48144 transitions.
[2023-12-25 19:27:26,209 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-12-25 19:27:26,210 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 907.0) internal successors, (6349), 7 states have internal predecessors, (6349), 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 7046
[2023-12-25 19:27:26,214 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 19:27:26,233 INFO  L225             Difference]: With dead ends: 28985
[2023-12-25 19:27:26,233 INFO  L226             Difference]: Without dead ends: 19722
[2023-12-25 19:27:26,244 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 7055 GetRequests, 7043 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-12-25 19:27:26,245 INFO  L413           NwaCegarLoop]: 17500 mSDtfsCounter, 43526 mSDsluCounter, 68239 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43526 SdHoareTripleChecker+Valid, 85739 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2023-12-25 19:27:26,245 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [43526 Valid, 85739 Invalid, 48 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2023-12-25 19:27:26,259 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 19722 states.
[2023-12-25 19:27:26,446 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 19722 to 10744.
[2023-12-25 19:27:26,455 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 10744 states, 10743 states have (on average 1.66154705389556) internal successors, (17850), 10743 states have internal predecessors, (17850), 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)
[2023-12-25 19:27:26,464 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 10744 states to 10744 states and 17850 transitions.
[2023-12-25 19:27:26,464 INFO  L78                 Accepts]: Start accepts. Automaton has 10744 states and 17850 transitions. Word has length 7046
[2023-12-25 19:27:26,467 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 19:27:26,467 INFO  L495      AbstractCegarLoop]: Abstraction has 10744 states and 17850 transitions.
[2023-12-25 19:27:26,467 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 907.0) internal successors, (6349), 7 states have internal predecessors, (6349), 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)
[2023-12-25 19:27:26,468 INFO  L276                IsEmpty]: Start isEmpty. Operand 10744 states and 17850 transitions.
[2023-12-25 19:27:26,783 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 7048
[2023-12-25 19:27:26,783 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 19:27:26,785 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-12-25 19:27:26,899 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Forceful destruction successful, exit code 0
[2023-12-25 19:27:27,012 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58,56 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 19:27:27,012 INFO  L420      AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 19:27:27,013 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 19:27:27,013 INFO  L85        PathProgramCache]: Analyzing trace with hash -1475386144, now seen corresponding path program 1 times
[2023-12-25 19:27:27,013 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 19:27:27,013 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [793649824]
[2023-12-25 19:27:27,014 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 19:27:27,014 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 19:27:27,515 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 19:27:27,515 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2079418617]
[2023-12-25 19:27:27,517 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 19:27:27,517 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 19:27:27,517 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 19:27:27,518 INFO  L229       MonitoredProcess]: Starting monitored process 57 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-25 19:27:27,520 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Waiting until timeout for monitored process
[2023-12-25 19:27:35,852 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 19:27:36,089 INFO  L262         TraceCheckSpWp]: Trace formula consists of 35380 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-12-25 19:27:36,165 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 19:27:36,626 INFO  L134       CoverageAnalysis]: Checked inductivity of 798 backedges. 102 proven. 0 refuted. 0 times theorem prover too weak. 696 trivial. 0 not checked.
[2023-12-25 19:27:36,627 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 19:27:36,627 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 19:27:36,627 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [793649824]
[2023-12-25 19:27:36,627 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 19:27:36,627 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2079418617]
[2023-12-25 19:27:36,627 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [2079418617] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 19:27:36,627 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 19:27:36,628 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-12-25 19:27:36,628 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [598431343]
[2023-12-25 19:27:36,628 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 19:27:36,631 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-12-25 19:27:36,631 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 19:27:36,635 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-12-25 19:27:36,635 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-12-25 19:27:36,636 INFO  L87              Difference]: Start difference. First operand 10744 states and 17850 transitions. Second operand  has 7 states, 7 states have (on average 907.4285714285714) internal successors, (6352), 7 states have internal predecessors, (6352), 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)
[2023-12-25 19:27:37,087 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 19:27:37,087 INFO  L93              Difference]: Finished difference Result 28991 states and 48150 transitions.
[2023-12-25 19:27:37,087 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-12-25 19:27:37,089 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 907.4285714285714) internal successors, (6352), 7 states have internal predecessors, (6352), 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 7047
[2023-12-25 19:27:37,093 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 19:27:37,114 INFO  L225             Difference]: With dead ends: 28991
[2023-12-25 19:27:37,114 INFO  L226             Difference]: Without dead ends: 19723
[2023-12-25 19:27:37,127 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 7056 GetRequests, 7044 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-12-25 19:27:37,127 INFO  L413           NwaCegarLoop]: 17495 mSDtfsCounter, 43525 mSDsluCounter, 68224 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43525 SdHoareTripleChecker+Valid, 85719 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-12-25 19:27:37,127 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [43525 Valid, 85719 Invalid, 48 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-12-25 19:27:37,142 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 19723 states.
[2023-12-25 19:27:37,327 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 19723 to 10746.
[2023-12-25 19:27:37,338 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 10746 states, 10745 states have (on average 1.6614239181014425) internal successors, (17852), 10745 states have internal predecessors, (17852), 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)
[2023-12-25 19:27:37,349 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 10746 states to 10746 states and 17852 transitions.
[2023-12-25 19:27:37,349 INFO  L78                 Accepts]: Start accepts. Automaton has 10746 states and 17852 transitions. Word has length 7047
[2023-12-25 19:27:37,352 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 19:27:37,352 INFO  L495      AbstractCegarLoop]: Abstraction has 10746 states and 17852 transitions.
[2023-12-25 19:27:37,353 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 907.4285714285714) internal successors, (6352), 7 states have internal predecessors, (6352), 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)
[2023-12-25 19:27:37,353 INFO  L276                IsEmpty]: Start isEmpty. Operand 10746 states and 17852 transitions.
[2023-12-25 19:27:37,642 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 7049
[2023-12-25 19:27:37,642 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 19:27:37,644 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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1]
[2023-12-25 19:27:37,760 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Forceful destruction successful, exit code 0
[2023-12-25 19:27:37,868 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 57 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable59
[2023-12-25 19:27:37,868 INFO  L420      AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 19:27:37,869 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 19:27:37,869 INFO  L85        PathProgramCache]: Analyzing trace with hash -271382656, now seen corresponding path program 1 times
[2023-12-25 19:27:37,869 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 19:27:37,869 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1788994644]
[2023-12-25 19:27:37,870 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 19:27:37,870 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 19:27:38,405 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 19:27:38,405 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [291006099]
[2023-12-25 19:27:38,406 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 19:27:38,407 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 19:27:38,407 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 19:27:38,408 INFO  L229       MonitoredProcess]: Starting monitored process 58 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-25 19:27:38,408 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Waiting until timeout for monitored process
[2023-12-25 19:27:47,126 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 19:27:47,350 INFO  L262         TraceCheckSpWp]: Trace formula consists of 35383 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-12-25 19:27:47,423 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 19:27:47,769 INFO  L134       CoverageAnalysis]: Checked inductivity of 798 backedges. 104 proven. 0 refuted. 0 times theorem prover too weak. 694 trivial. 0 not checked.
[2023-12-25 19:27:47,769 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 19:27:47,769 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 19:27:47,770 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1788994644]
[2023-12-25 19:27:47,770 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 19:27:47,770 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [291006099]
[2023-12-25 19:27:47,770 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [291006099] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 19:27:47,770 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 19:27:47,770 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-12-25 19:27:47,770 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1933391999]
[2023-12-25 19:27:47,770 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 19:27:47,773 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-12-25 19:27:47,773 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 19:27:47,776 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-12-25 19:27:47,776 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-12-25 19:27:47,776 INFO  L87              Difference]: Start difference. First operand 10746 states and 17852 transitions. Second operand  has 7 states, 7 states have (on average 907.8571428571429) internal successors, (6355), 7 states have internal predecessors, (6355), 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)
[2023-12-25 19:27:48,294 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 19:27:48,295 INFO  L93              Difference]: Finished difference Result 28997 states and 48156 transitions.
[2023-12-25 19:27:48,295 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-12-25 19:27:48,296 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 907.8571428571429) internal successors, (6355), 7 states have internal predecessors, (6355), 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 7048
[2023-12-25 19:27:48,300 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 19:27:48,317 INFO  L225             Difference]: With dead ends: 28997
[2023-12-25 19:27:48,317 INFO  L226             Difference]: Without dead ends: 19724
[2023-12-25 19:27:48,328 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 7057 GetRequests, 7045 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-12-25 19:27:48,328 INFO  L413           NwaCegarLoop]: 17490 mSDtfsCounter, 43524 mSDsluCounter, 68209 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43524 SdHoareTripleChecker+Valid, 85699 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-12-25 19:27:48,328 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [43524 Valid, 85699 Invalid, 48 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-12-25 19:27:48,340 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 19724 states.
[2023-12-25 19:27:48,429 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 19724 to 10748.
[2023-12-25 19:27:48,438 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 10748 states, 10747 states have (on average 1.661300828138085) internal successors, (17854), 10747 states have internal predecessors, (17854), 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)
[2023-12-25 19:27:48,447 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 10748 states to 10748 states and 17854 transitions.
[2023-12-25 19:27:48,447 INFO  L78                 Accepts]: Start accepts. Automaton has 10748 states and 17854 transitions. Word has length 7048
[2023-12-25 19:27:48,450 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 19:27:48,450 INFO  L495      AbstractCegarLoop]: Abstraction has 10748 states and 17854 transitions.
[2023-12-25 19:27:48,451 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 907.8571428571429) internal successors, (6355), 7 states have internal predecessors, (6355), 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)
[2023-12-25 19:27:48,451 INFO  L276                IsEmpty]: Start isEmpty. Operand 10748 states and 17854 transitions.
[2023-12-25 19:27:48,740 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 7050
[2023-12-25 19:27:48,740 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 19:27:48,741 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-12-25 19:27:48,860 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Ended with exit code 0
[2023-12-25 19:27:48,964 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60,58 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 19:27:48,965 INFO  L420      AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 19:27:48,965 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 19:27:48,965 INFO  L85        PathProgramCache]: Analyzing trace with hash -23261572, now seen corresponding path program 1 times
[2023-12-25 19:27:48,965 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 19:27:48,966 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1069929242]
[2023-12-25 19:27:48,966 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 19:27:48,966 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 19:27:49,440 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 19:27:49,440 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1134979941]
[2023-12-25 19:27:49,442 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 19:27:49,442 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 19:27:49,442 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 19:27:49,443 INFO  L229       MonitoredProcess]: Starting monitored process 59 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-25 19:27:49,444 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Waiting until timeout for monitored process
[2023-12-25 19:27:57,862 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 19:27:58,106 INFO  L262         TraceCheckSpWp]: Trace formula consists of 35387 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-12-25 19:27:58,391 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 19:27:58,742 INFO  L134       CoverageAnalysis]: Checked inductivity of 798 backedges. 106 proven. 0 refuted. 0 times theorem prover too weak. 692 trivial. 0 not checked.
[2023-12-25 19:27:58,742 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 19:27:58,742 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 19:27:58,742 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1069929242]
[2023-12-25 19:27:58,742 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 19:27:58,742 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1134979941]
[2023-12-25 19:27:58,742 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1134979941] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 19:27:58,742 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 19:27:58,743 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-12-25 19:27:58,743 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1835334269]
[2023-12-25 19:27:58,743 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 19:27:58,746 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-12-25 19:27:58,746 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 19:27:58,748 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-12-25 19:27:58,748 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-12-25 19:27:58,749 INFO  L87              Difference]: Start difference. First operand 10748 states and 17854 transitions. Second operand  has 7 states, 7 states have (on average 908.2857142857143) internal successors, (6358), 7 states have internal predecessors, (6358), 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)
[2023-12-25 19:27:59,182 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 19:27:59,183 INFO  L93              Difference]: Finished difference Result 29003 states and 48162 transitions.
[2023-12-25 19:27:59,183 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-12-25 19:27:59,184 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 908.2857142857143) internal successors, (6358), 7 states have internal predecessors, (6358), 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 7049
[2023-12-25 19:27:59,188 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 19:27:59,205 INFO  L225             Difference]: With dead ends: 29003
[2023-12-25 19:27:59,205 INFO  L226             Difference]: Without dead ends: 19725
[2023-12-25 19:27:59,216 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 7058 GetRequests, 7046 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-12-25 19:27:59,216 INFO  L413           NwaCegarLoop]: 17485 mSDtfsCounter, 43523 mSDsluCounter, 68194 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43523 SdHoareTripleChecker+Valid, 85679 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-12-25 19:27:59,216 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [43523 Valid, 85679 Invalid, 48 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-12-25 19:27:59,229 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 19725 states.
[2023-12-25 19:27:59,330 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 19725 to 10750.
[2023-12-25 19:27:59,341 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 10750 states, 10749 states have (on average 1.6611777839799051) internal successors, (17856), 10749 states have internal predecessors, (17856), 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)
[2023-12-25 19:27:59,352 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 10750 states to 10750 states and 17856 transitions.
[2023-12-25 19:27:59,352 INFO  L78                 Accepts]: Start accepts. Automaton has 10750 states and 17856 transitions. Word has length 7049
[2023-12-25 19:27:59,355 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 19:27:59,355 INFO  L495      AbstractCegarLoop]: Abstraction has 10750 states and 17856 transitions.
[2023-12-25 19:27:59,356 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 908.2857142857143) internal successors, (6358), 7 states have internal predecessors, (6358), 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)
[2023-12-25 19:27:59,357 INFO  L276                IsEmpty]: Start isEmpty. Operand 10750 states and 17856 transitions.
[2023-12-25 19:27:59,688 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 7051
[2023-12-25 19:27:59,689 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 19:27:59,690 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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1, 1, 1, 1, 1]
[2023-12-25 19:27:59,802 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Forceful destruction successful, exit code 0
[2023-12-25 19:27:59,902 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 59 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable61
[2023-12-25 19:27:59,902 INFO  L420      AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 19:27:59,903 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 19:27:59,903 INFO  L85        PathProgramCache]: Analyzing trace with hash -520665880, now seen corresponding path program 1 times
[2023-12-25 19:27:59,903 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 19:27:59,903 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1723901424]
[2023-12-25 19:27:59,904 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 19:27:59,904 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 19:28:00,497 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 19:28:00,497 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [301496695]
[2023-12-25 19:28:00,498 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 19:28:00,499 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 19:28:00,499 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 19:28:00,500 INFO  L229       MonitoredProcess]: Starting monitored process 60 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-25 19:28:00,501 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Waiting until timeout for monitored process
[2023-12-25 19:28:09,163 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 19:28:09,397 INFO  L262         TraceCheckSpWp]: Trace formula consists of 35390 conjuncts, 21 conjunts are in the unsatisfiable core
[2023-12-25 19:28:09,474 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 19:28:09,829 INFO  L134       CoverageAnalysis]: Checked inductivity of 798 backedges. 108 proven. 0 refuted. 0 times theorem prover too weak. 690 trivial. 0 not checked.
[2023-12-25 19:28:09,829 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 19:28:09,829 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 19:28:09,829 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1723901424]
[2023-12-25 19:28:09,829 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 19:28:09,829 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [301496695]
[2023-12-25 19:28:09,829 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [301496695] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 19:28:09,829 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 19:28:09,830 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8
[2023-12-25 19:28:09,830 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [26762443]
[2023-12-25 19:28:09,830 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 19:28:09,833 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 8 states
[2023-12-25 19:28:09,833 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 19:28:09,835 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2023-12-25 19:28:09,835 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56
[2023-12-25 19:28:09,836 INFO  L87              Difference]: Start difference. First operand 10750 states and 17856 transitions. Second operand  has 8 states, 8 states have (on average 795.125) internal successors, (6361), 8 states have internal predecessors, (6361), 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)
[2023-12-25 19:28:10,437 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 19:28:10,437 INFO  L93              Difference]: Finished difference Result 29009 states and 48168 transitions.
[2023-12-25 19:28:10,437 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-12-25 19:28:10,439 INFO  L78                 Accepts]: Start accepts. Automaton has  has 8 states, 8 states have (on average 795.125) internal successors, (6361), 8 states have internal predecessors, (6361), 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 7050
[2023-12-25 19:28:10,443 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 19:28:10,456 INFO  L225             Difference]: With dead ends: 29009
[2023-12-25 19:28:10,456 INFO  L226             Difference]: Without dead ends: 19726
[2023-12-25 19:28:10,462 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 7059 GetRequests, 7046 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=51, Invalid=159, Unknown=0, NotChecked=0, Total=210
[2023-12-25 19:28:10,463 INFO  L413           NwaCegarLoop]: 17480 mSDtfsCounter, 43522 mSDsluCounter, 83059 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43522 SdHoareTripleChecker+Valid, 100539 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-12-25 19:28:10,463 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [43522 Valid, 100539 Invalid, 54 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [1 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-12-25 19:28:10,473 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 19726 states.
[2023-12-25 19:28:10,558 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 19726 to 10752.
[2023-12-25 19:28:10,567 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 10752 states, 10751 states have (on average 1.6610547856013393) internal successors, (17858), 10751 states have internal predecessors, (17858), 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)
[2023-12-25 19:28:10,576 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 10752 states to 10752 states and 17858 transitions.
[2023-12-25 19:28:10,576 INFO  L78                 Accepts]: Start accepts. Automaton has 10752 states and 17858 transitions. Word has length 7050
[2023-12-25 19:28:10,579 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 19:28:10,579 INFO  L495      AbstractCegarLoop]: Abstraction has 10752 states and 17858 transitions.
[2023-12-25 19:28:10,580 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 8 states, 8 states have (on average 795.125) internal successors, (6361), 8 states have internal predecessors, (6361), 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)
[2023-12-25 19:28:10,580 INFO  L276                IsEmpty]: Start isEmpty. Operand 10752 states and 17858 transitions.
[2023-12-25 19:28:10,823 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 7052
[2023-12-25 19:28:10,823 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 19:28:10,825 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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1, 1, 1, 1, 1, 1, 1]
[2023-12-25 19:28:10,935 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Forceful destruction successful, exit code 0
[2023-12-25 19:28:11,032 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 60 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable62
[2023-12-25 19:28:11,032 INFO  L420      AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 19:28:11,033 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 19:28:11,033 INFO  L85        PathProgramCache]: Analyzing trace with hash -2122437354, now seen corresponding path program 1 times
[2023-12-25 19:28:11,033 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 19:28:11,033 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1115258089]
[2023-12-25 19:28:11,034 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 19:28:11,034 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 19:28:11,545 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 19:28:11,545 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1243728758]
[2023-12-25 19:28:11,547 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 19:28:11,547 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 19:28:11,547 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 19:28:11,548 INFO  L229       MonitoredProcess]: Starting monitored process 61 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-25 19:28:11,550 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Waiting until timeout for monitored process
[2023-12-25 19:28:19,536 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 19:28:19,760 INFO  L262         TraceCheckSpWp]: Trace formula consists of 35393 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-12-25 19:28:19,835 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 19:28:20,232 INFO  L134       CoverageAnalysis]: Checked inductivity of 798 backedges. 110 proven. 0 refuted. 0 times theorem prover too weak. 688 trivial. 0 not checked.
[2023-12-25 19:28:20,232 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 19:28:20,232 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 19:28:20,232 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1115258089]
[2023-12-25 19:28:20,232 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 19:28:20,232 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1243728758]
[2023-12-25 19:28:20,233 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1243728758] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 19:28:20,233 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 19:28:20,233 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-12-25 19:28:20,233 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [575734033]
[2023-12-25 19:28:20,233 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 19:28:20,237 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-12-25 19:28:20,237 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 19:28:20,241 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-12-25 19:28:20,242 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-12-25 19:28:20,244 INFO  L87              Difference]: Start difference. First operand 10752 states and 17858 transitions. Second operand  has 7 states, 7 states have (on average 909.1428571428571) internal successors, (6364), 7 states have internal predecessors, (6364), 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)
[2023-12-25 19:28:20,797 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 19:28:20,797 INFO  L93              Difference]: Finished difference Result 29015 states and 48174 transitions.
[2023-12-25 19:28:20,797 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-12-25 19:28:20,799 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 909.1428571428571) internal successors, (6364), 7 states have internal predecessors, (6364), 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 7051
[2023-12-25 19:28:20,804 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 19:28:20,818 INFO  L225             Difference]: With dead ends: 29015
[2023-12-25 19:28:20,818 INFO  L226             Difference]: Without dead ends: 19727
[2023-12-25 19:28:20,827 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 7060 GetRequests, 7048 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-12-25 19:28:20,828 INFO  L413           NwaCegarLoop]: 17475 mSDtfsCounter, 43521 mSDsluCounter, 68164 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43521 SdHoareTripleChecker+Valid, 85639 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-12-25 19:28:20,834 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [43521 Valid, 85639 Invalid, 48 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-12-25 19:28:20,847 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 19727 states.
[2023-12-25 19:28:20,944 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 19727 to 10754.
[2023-12-25 19:28:20,953 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 10754 states, 10753 states have (on average 1.6609318329768437) internal successors, (17860), 10753 states have internal predecessors, (17860), 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)
[2023-12-25 19:28:20,963 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 10754 states to 10754 states and 17860 transitions.
[2023-12-25 19:28:20,964 INFO  L78                 Accepts]: Start accepts. Automaton has 10754 states and 17860 transitions. Word has length 7051
[2023-12-25 19:28:20,967 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 19:28:20,968 INFO  L495      AbstractCegarLoop]: Abstraction has 10754 states and 17860 transitions.
[2023-12-25 19:28:20,968 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 909.1428571428571) internal successors, (6364), 7 states have internal predecessors, (6364), 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)
[2023-12-25 19:28:20,968 INFO  L276                IsEmpty]: Start isEmpty. Operand 10754 states and 17860 transitions.
[2023-12-25 19:28:21,216 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 7053
[2023-12-25 19:28:21,216 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 19:28:21,217 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-12-25 19:28:21,326 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Forceful destruction successful, exit code 0
[2023-12-25 19:28:21,430 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63,61 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 19:28:21,431 INFO  L420      AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 19:28:21,431 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 19:28:21,431 INFO  L85        PathProgramCache]: Analyzing trace with hash -2133316786, now seen corresponding path program 1 times
[2023-12-25 19:28:21,431 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 19:28:21,431 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [578837369]
[2023-12-25 19:28:21,432 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 19:28:21,432 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 19:28:21,959 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 19:28:21,960 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1689879299]
[2023-12-25 19:28:21,961 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 19:28:21,961 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 19:28:21,961 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 19:28:21,962 INFO  L229       MonitoredProcess]: Starting monitored process 62 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-25 19:28:21,964 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Waiting until timeout for monitored process
[2023-12-25 19:28:30,500 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 19:28:30,760 INFO  L262         TraceCheckSpWp]: Trace formula consists of 35396 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-12-25 19:28:30,844 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 19:28:31,198 INFO  L134       CoverageAnalysis]: Checked inductivity of 798 backedges. 112 proven. 0 refuted. 0 times theorem prover too weak. 686 trivial. 0 not checked.
[2023-12-25 19:28:31,198 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 19:28:31,198 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 19:28:31,198 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [578837369]
[2023-12-25 19:28:31,198 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 19:28:31,198 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1689879299]
[2023-12-25 19:28:31,198 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1689879299] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 19:28:31,198 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 19:28:31,199 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-12-25 19:28:31,199 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2095373046]
[2023-12-25 19:28:31,199 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 19:28:31,202 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-12-25 19:28:31,202 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 19:28:31,204 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-12-25 19:28:31,204 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-12-25 19:28:31,205 INFO  L87              Difference]: Start difference. First operand 10754 states and 17860 transitions. Second operand  has 7 states, 7 states have (on average 909.5714285714286) internal successors, (6367), 7 states have internal predecessors, (6367), 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)
[2023-12-25 19:28:31,764 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 19:28:31,764 INFO  L93              Difference]: Finished difference Result 29021 states and 48180 transitions.
[2023-12-25 19:28:31,764 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-12-25 19:28:31,765 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 909.5714285714286) internal successors, (6367), 7 states have internal predecessors, (6367), 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 7052
[2023-12-25 19:28:31,770 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 19:28:31,785 INFO  L225             Difference]: With dead ends: 29021
[2023-12-25 19:28:31,785 INFO  L226             Difference]: Without dead ends: 19728
[2023-12-25 19:28:31,791 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 7061 GetRequests, 7049 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-12-25 19:28:31,792 INFO  L413           NwaCegarLoop]: 17470 mSDtfsCounter, 43520 mSDsluCounter, 68149 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43520 SdHoareTripleChecker+Valid, 85619 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-12-25 19:28:31,792 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [43520 Valid, 85619 Invalid, 48 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-12-25 19:28:31,805 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 19728 states.
[2023-12-25 19:28:31,904 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 19728 to 10756.
[2023-12-25 19:28:31,914 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 10756 states, 10755 states have (on average 1.6608089260808927) internal successors, (17862), 10755 states have internal predecessors, (17862), 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)
[2023-12-25 19:28:31,925 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 10756 states to 10756 states and 17862 transitions.
[2023-12-25 19:28:31,925 INFO  L78                 Accepts]: Start accepts. Automaton has 10756 states and 17862 transitions. Word has length 7052
[2023-12-25 19:28:31,928 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 19:28:31,928 INFO  L495      AbstractCegarLoop]: Abstraction has 10756 states and 17862 transitions.
[2023-12-25 19:28:31,929 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 909.5714285714286) internal successors, (6367), 7 states have internal predecessors, (6367), 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)
[2023-12-25 19:28:31,929 INFO  L276                IsEmpty]: Start isEmpty. Operand 10756 states and 17862 transitions.
[2023-12-25 19:28:32,172 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 7054
[2023-12-25 19:28:32,172 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 19:28:32,174 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-12-25 19:28:32,293 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Forceful destruction successful, exit code 0
[2023-12-25 19:28:32,385 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64,62 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 19:28:32,386 INFO  L420      AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 19:28:32,386 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 19:28:32,386 INFO  L85        PathProgramCache]: Analyzing trace with hash 1180155826, now seen corresponding path program 1 times
[2023-12-25 19:28:32,387 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 19:28:32,387 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [209485223]
[2023-12-25 19:28:32,387 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 19:28:32,394 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 19:28:32,880 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 19:28:32,880 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [776413011]
[2023-12-25 19:28:32,883 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 19:28:32,885 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 19:28:32,885 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 19:28:32,886 INFO  L229       MonitoredProcess]: Starting monitored process 63 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-25 19:28:32,888 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Waiting until timeout for monitored process
[2023-12-25 19:28:41,292 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 19:28:41,534 INFO  L262         TraceCheckSpWp]: Trace formula consists of 35400 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-12-25 19:28:41,621 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 19:28:41,931 INFO  L134       CoverageAnalysis]: Checked inductivity of 798 backedges. 114 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked.
[2023-12-25 19:28:41,932 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 19:28:41,932 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 19:28:41,932 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [209485223]
[2023-12-25 19:28:41,932 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 19:28:41,933 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [776413011]
[2023-12-25 19:28:41,933 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [776413011] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 19:28:41,934 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 19:28:41,934 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-12-25 19:28:41,934 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [551677141]
[2023-12-25 19:28:41,934 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 19:28:41,937 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-12-25 19:28:41,937 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 19:28:41,940 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-12-25 19:28:41,940 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-12-25 19:28:41,940 INFO  L87              Difference]: Start difference. First operand 10756 states and 17862 transitions. Second operand  has 7 states, 7 states have (on average 910.0) internal successors, (6370), 7 states have internal predecessors, (6370), 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)
[2023-12-25 19:28:42,501 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 19:28:42,501 INFO  L93              Difference]: Finished difference Result 29027 states and 48186 transitions.
[2023-12-25 19:28:42,501 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-12-25 19:28:42,503 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 910.0) internal successors, (6370), 7 states have internal predecessors, (6370), 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 7053
[2023-12-25 19:28:42,507 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 19:28:42,521 INFO  L225             Difference]: With dead ends: 29027
[2023-12-25 19:28:42,522 INFO  L226             Difference]: Without dead ends: 19729
[2023-12-25 19:28:42,528 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 7062 GetRequests, 7050 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-12-25 19:28:42,529 INFO  L413           NwaCegarLoop]: 17465 mSDtfsCounter, 43519 mSDsluCounter, 68134 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43519 SdHoareTripleChecker+Valid, 85599 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-12-25 19:28:42,529 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [43519 Valid, 85599 Invalid, 48 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-12-25 19:28:42,544 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 19729 states.
[2023-12-25 19:28:42,641 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 19729 to 10758.
[2023-12-25 19:28:42,651 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 10758 states, 10757 states have (on average 1.66068606488798) internal successors, (17864), 10757 states have internal predecessors, (17864), 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)
[2023-12-25 19:28:42,662 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 10758 states to 10758 states and 17864 transitions.
[2023-12-25 19:28:42,662 INFO  L78                 Accepts]: Start accepts. Automaton has 10758 states and 17864 transitions. Word has length 7053
[2023-12-25 19:28:42,665 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 19:28:42,665 INFO  L495      AbstractCegarLoop]: Abstraction has 10758 states and 17864 transitions.
[2023-12-25 19:28:42,666 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 910.0) internal successors, (6370), 7 states have internal predecessors, (6370), 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)
[2023-12-25 19:28:42,666 INFO  L276                IsEmpty]: Start isEmpty. Operand 10758 states and 17864 transitions.
[2023-12-25 19:28:42,910 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 7055
[2023-12-25 19:28:42,910 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 19:28:42,912 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-12-25 19:28:43,025 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Forceful destruction successful, exit code 0
[2023-12-25 19:28:43,119 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 63 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable65
[2023-12-25 19:28:43,120 INFO  L420      AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 19:28:43,120 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 19:28:43,121 INFO  L85        PathProgramCache]: Analyzing trace with hash 1279818166, now seen corresponding path program 1 times
[2023-12-25 19:28:43,121 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 19:28:43,121 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [871127118]
[2023-12-25 19:28:43,122 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 19:28:43,122 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 19:28:43,629 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 19:28:43,630 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [472424414]
[2023-12-25 19:28:43,631 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 19:28:43,631 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 19:28:43,631 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 19:28:43,632 INFO  L229       MonitoredProcess]: Starting monitored process 64 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-25 19:28:43,656 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Waiting until timeout for monitored process
[2023-12-25 19:28:52,013 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 19:28:52,247 INFO  L262         TraceCheckSpWp]: Trace formula consists of 35403 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-12-25 19:28:52,330 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 19:28:52,626 INFO  L134       CoverageAnalysis]: Checked inductivity of 798 backedges. 116 proven. 0 refuted. 0 times theorem prover too weak. 682 trivial. 0 not checked.
[2023-12-25 19:28:52,626 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 19:28:52,626 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 19:28:52,626 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [871127118]
[2023-12-25 19:28:52,626 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 19:28:52,626 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [472424414]
[2023-12-25 19:28:52,626 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [472424414] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 19:28:52,627 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 19:28:52,627 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-12-25 19:28:52,627 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [687389364]
[2023-12-25 19:28:52,627 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 19:28:52,630 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-12-25 19:28:52,630 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 19:28:52,634 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-12-25 19:28:52,634 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-12-25 19:28:52,635 INFO  L87              Difference]: Start difference. First operand 10758 states and 17864 transitions. Second operand  has 7 states, 7 states have (on average 910.4285714285714) internal successors, (6373), 7 states have internal predecessors, (6373), 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)
[2023-12-25 19:28:53,076 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 19:28:53,076 INFO  L93              Difference]: Finished difference Result 29033 states and 48192 transitions.
[2023-12-25 19:28:53,076 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-12-25 19:28:53,078 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 910.4285714285714) internal successors, (6373), 7 states have internal predecessors, (6373), 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 7054
[2023-12-25 19:28:53,082 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 19:28:53,102 INFO  L225             Difference]: With dead ends: 29033
[2023-12-25 19:28:53,102 INFO  L226             Difference]: Without dead ends: 19730
[2023-12-25 19:28:53,113 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 7063 GetRequests, 7051 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-12-25 19:28:53,115 INFO  L413           NwaCegarLoop]: 17460 mSDtfsCounter, 43518 mSDsluCounter, 68119 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43518 SdHoareTripleChecker+Valid, 85579 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-12-25 19:28:53,115 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [43518 Valid, 85579 Invalid, 48 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-12-25 19:28:53,131 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 19730 states.
[2023-12-25 19:28:53,238 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 19730 to 10760.
[2023-12-25 19:28:53,249 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 10760 states, 10759 states have (on average 1.6605632493726183) internal successors, (17866), 10759 states have internal predecessors, (17866), 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)
[2023-12-25 19:28:53,260 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 10760 states to 10760 states and 17866 transitions.
[2023-12-25 19:28:53,260 INFO  L78                 Accepts]: Start accepts. Automaton has 10760 states and 17866 transitions. Word has length 7054
[2023-12-25 19:28:53,263 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 19:28:53,263 INFO  L495      AbstractCegarLoop]: Abstraction has 10760 states and 17866 transitions.
[2023-12-25 19:28:53,265 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 910.4285714285714) internal successors, (6373), 7 states have internal predecessors, (6373), 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)
[2023-12-25 19:28:53,265 INFO  L276                IsEmpty]: Start isEmpty. Operand 10760 states and 17866 transitions.
[2023-12-25 19:28:53,621 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 7056
[2023-12-25 19:28:53,622 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 19:28:53,623 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-12-25 19:28:53,729 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Forceful destruction successful, exit code 0
[2023-12-25 19:28:53,836 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 64 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable66
[2023-12-25 19:28:53,836 INFO  L420      AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 19:28:53,836 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 19:28:53,837 INFO  L85        PathProgramCache]: Analyzing trace with hash 1399224908, now seen corresponding path program 1 times
[2023-12-25 19:28:53,837 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 19:28:53,837 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2134235312]
[2023-12-25 19:28:53,838 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 19:28:53,838 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 19:28:54,350 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 19:28:54,351 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [965925752]
[2023-12-25 19:28:54,352 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 19:28:54,352 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 19:28:54,352 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 19:28:54,353 INFO  L229       MonitoredProcess]: Starting monitored process 65 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-25 19:28:54,354 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Waiting until timeout for monitored process
[2023-12-25 19:29:02,581 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 19:29:02,834 INFO  L262         TraceCheckSpWp]: Trace formula consists of 35406 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-12-25 19:29:02,918 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 19:29:03,187 INFO  L134       CoverageAnalysis]: Checked inductivity of 798 backedges. 118 proven. 0 refuted. 0 times theorem prover too weak. 680 trivial. 0 not checked.
[2023-12-25 19:29:03,187 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 19:29:03,187 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 19:29:03,187 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2134235312]
[2023-12-25 19:29:03,187 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 19:29:03,187 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [965925752]
[2023-12-25 19:29:03,187 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [965925752] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 19:29:03,187 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 19:29:03,188 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-12-25 19:29:03,188 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1767885979]
[2023-12-25 19:29:03,188 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 19:29:03,191 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-12-25 19:29:03,191 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 19:29:03,193 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-12-25 19:29:03,193 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-12-25 19:29:03,194 INFO  L87              Difference]: Start difference. First operand 10760 states and 17866 transitions. Second operand  has 7 states, 7 states have (on average 910.8571428571429) internal successors, (6376), 7 states have internal predecessors, (6376), 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)
[2023-12-25 19:29:03,751 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 19:29:03,751 INFO  L93              Difference]: Finished difference Result 29039 states and 48198 transitions.
[2023-12-25 19:29:03,751 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-12-25 19:29:03,753 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 910.8571428571429) internal successors, (6376), 7 states have internal predecessors, (6376), 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 7055
[2023-12-25 19:29:03,757 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 19:29:03,776 INFO  L225             Difference]: With dead ends: 29039
[2023-12-25 19:29:03,776 INFO  L226             Difference]: Without dead ends: 19731
[2023-12-25 19:29:03,786 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 7064 GetRequests, 7052 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-12-25 19:29:03,786 INFO  L413           NwaCegarLoop]: 17455 mSDtfsCounter, 43517 mSDsluCounter, 68104 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43517 SdHoareTripleChecker+Valid, 85559 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2023-12-25 19:29:03,786 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [43517 Valid, 85559 Invalid, 48 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2023-12-25 19:29:03,801 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 19731 states.
[2023-12-25 19:29:03,901 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 19731 to 10762.
[2023-12-25 19:29:03,911 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 10762 states, 10761 states have (on average 1.6604404795093393) internal successors, (17868), 10761 states have internal predecessors, (17868), 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)
[2023-12-25 19:29:03,920 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 10762 states to 10762 states and 17868 transitions.
[2023-12-25 19:29:03,921 INFO  L78                 Accepts]: Start accepts. Automaton has 10762 states and 17868 transitions. Word has length 7055
[2023-12-25 19:29:03,924 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 19:29:03,924 INFO  L495      AbstractCegarLoop]: Abstraction has 10762 states and 17868 transitions.
[2023-12-25 19:29:03,924 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 910.8571428571429) internal successors, (6376), 7 states have internal predecessors, (6376), 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)
[2023-12-25 19:29:03,924 INFO  L276                IsEmpty]: Start isEmpty. Operand 10762 states and 17868 transitions.
[2023-12-25 19:29:04,170 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 7057
[2023-12-25 19:29:04,170 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 19:29:04,172 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-12-25 19:29:04,285 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Ended with exit code 0
[2023-12-25 19:29:04,388 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67,65 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 19:29:04,389 INFO  L420      AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 19:29:04,389 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 19:29:04,389 INFO  L85        PathProgramCache]: Analyzing trace with hash -1590516708, now seen corresponding path program 1 times
[2023-12-25 19:29:04,389 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 19:29:04,389 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2045646950]
[2023-12-25 19:29:04,390 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 19:29:04,390 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 19:29:04,930 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 19:29:04,930 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1929669942]
[2023-12-25 19:29:04,932 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 19:29:04,932 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 19:29:04,932 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 19:29:04,933 INFO  L229       MonitoredProcess]: Starting monitored process 66 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-25 19:29:04,935 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Waiting until timeout for monitored process
[2023-12-25 19:29:13,255 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 19:29:13,500 INFO  L262         TraceCheckSpWp]: Trace formula consists of 35409 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-12-25 19:29:13,590 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 19:29:14,059 INFO  L134       CoverageAnalysis]: Checked inductivity of 798 backedges. 120 proven. 0 refuted. 0 times theorem prover too weak. 678 trivial. 0 not checked.
[2023-12-25 19:29:14,059 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 19:29:14,059 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 19:29:14,059 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2045646950]
[2023-12-25 19:29:14,059 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 19:29:14,059 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1929669942]
[2023-12-25 19:29:14,059 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1929669942] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 19:29:14,059 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 19:29:14,060 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-12-25 19:29:14,060 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1419857625]
[2023-12-25 19:29:14,060 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 19:29:14,063 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-12-25 19:29:14,063 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 19:29:14,065 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-12-25 19:29:14,065 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-12-25 19:29:14,066 INFO  L87              Difference]: Start difference. First operand 10762 states and 17868 transitions. Second operand  has 7 states, 7 states have (on average 911.2857142857143) internal successors, (6379), 7 states have internal predecessors, (6379), 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)
[2023-12-25 19:29:14,514 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 19:29:14,514 INFO  L93              Difference]: Finished difference Result 29045 states and 48204 transitions.
[2023-12-25 19:29:14,514 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-12-25 19:29:14,516 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 911.2857142857143) internal successors, (6379), 7 states have internal predecessors, (6379), 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 7056
[2023-12-25 19:29:14,520 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 19:29:14,537 INFO  L225             Difference]: With dead ends: 29045
[2023-12-25 19:29:14,537 INFO  L226             Difference]: Without dead ends: 19732
[2023-12-25 19:29:14,547 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 7065 GetRequests, 7053 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-12-25 19:29:14,560 INFO  L413           NwaCegarLoop]: 17450 mSDtfsCounter, 43516 mSDsluCounter, 68089 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43516 SdHoareTripleChecker+Valid, 85539 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-12-25 19:29:14,560 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [43516 Valid, 85539 Invalid, 48 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-12-25 19:29:14,585 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 19732 states.
[2023-12-25 19:29:14,743 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 19732 to 10764.
[2023-12-25 19:29:14,754 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 10764 states, 10763 states have (on average 1.6603177552726935) internal successors, (17870), 10763 states have internal predecessors, (17870), 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)
[2023-12-25 19:29:14,764 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 10764 states to 10764 states and 17870 transitions.
[2023-12-25 19:29:14,764 INFO  L78                 Accepts]: Start accepts. Automaton has 10764 states and 17870 transitions. Word has length 7056
[2023-12-25 19:29:14,768 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 19:29:14,768 INFO  L495      AbstractCegarLoop]: Abstraction has 10764 states and 17870 transitions.
[2023-12-25 19:29:14,769 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 911.2857142857143) internal successors, (6379), 7 states have internal predecessors, (6379), 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)
[2023-12-25 19:29:14,769 INFO  L276                IsEmpty]: Start isEmpty. Operand 10764 states and 17870 transitions.
[2023-12-25 19:29:15,066 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 7058
[2023-12-25 19:29:15,067 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 19:29:15,068 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-12-25 19:29:15,179 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Ended with exit code 0
[2023-12-25 19:29:15,284 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 66 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable68
[2023-12-25 19:29:15,284 INFO  L420      AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 19:29:15,285 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 19:29:15,285 INFO  L85        PathProgramCache]: Analyzing trace with hash -2029718040, now seen corresponding path program 1 times
[2023-12-25 19:29:15,285 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 19:29:15,285 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [435613664]
[2023-12-25 19:29:15,286 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 19:29:15,286 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 19:29:15,893 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 19:29:15,893 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [394764868]
[2023-12-25 19:29:15,895 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 19:29:15,895 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 19:29:15,895 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 19:29:15,896 INFO  L229       MonitoredProcess]: Starting monitored process 67 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-25 19:29:15,897 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (67)] Waiting until timeout for monitored process
[2023-12-25 19:29:24,012 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 19:29:24,250 INFO  L262         TraceCheckSpWp]: Trace formula consists of 35413 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-12-25 19:29:24,424 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 19:29:24,768 INFO  L134       CoverageAnalysis]: Checked inductivity of 798 backedges. 122 proven. 0 refuted. 0 times theorem prover too weak. 676 trivial. 0 not checked.
[2023-12-25 19:29:24,768 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 19:29:24,768 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 19:29:24,768 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [435613664]
[2023-12-25 19:29:24,768 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 19:29:24,768 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [394764868]
[2023-12-25 19:29:24,768 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [394764868] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 19:29:24,768 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 19:29:24,769 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-12-25 19:29:24,769 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1620358247]
[2023-12-25 19:29:24,769 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 19:29:24,772 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-12-25 19:29:24,772 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 19:29:24,776 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-12-25 19:29:24,776 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-12-25 19:29:24,777 INFO  L87              Difference]: Start difference. First operand 10764 states and 17870 transitions. Second operand  has 7 states, 7 states have (on average 911.7142857142857) internal successors, (6382), 7 states have internal predecessors, (6382), 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)
[2023-12-25 19:29:25,252 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 19:29:25,252 INFO  L93              Difference]: Finished difference Result 29051 states and 48210 transitions.
[2023-12-25 19:29:25,252 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-12-25 19:29:25,254 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 911.7142857142857) internal successors, (6382), 7 states have internal predecessors, (6382), 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 7057
[2023-12-25 19:29:25,258 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 19:29:25,274 INFO  L225             Difference]: With dead ends: 29051
[2023-12-25 19:29:25,274 INFO  L226             Difference]: Without dead ends: 19733
[2023-12-25 19:29:25,283 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 7066 GetRequests, 7054 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-12-25 19:29:25,287 INFO  L413           NwaCegarLoop]: 17445 mSDtfsCounter, 43515 mSDsluCounter, 68074 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43515 SdHoareTripleChecker+Valid, 85519 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-12-25 19:29:25,287 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [43515 Valid, 85519 Invalid, 48 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-12-25 19:29:25,301 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 19733 states.
[2023-12-25 19:29:25,397 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 19733 to 10766.
[2023-12-25 19:29:25,406 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 10766 states, 10765 states have (on average 1.6601950766372504) internal successors, (17872), 10765 states have internal predecessors, (17872), 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)
[2023-12-25 19:29:25,416 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 10766 states to 10766 states and 17872 transitions.
[2023-12-25 19:29:25,416 INFO  L78                 Accepts]: Start accepts. Automaton has 10766 states and 17872 transitions. Word has length 7057
[2023-12-25 19:29:25,419 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 19:29:25,419 INFO  L495      AbstractCegarLoop]: Abstraction has 10766 states and 17872 transitions.
[2023-12-25 19:29:25,419 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 911.7142857142857) internal successors, (6382), 7 states have internal predecessors, (6382), 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)
[2023-12-25 19:29:25,420 INFO  L276                IsEmpty]: Start isEmpty. Operand 10766 states and 17872 transitions.
[2023-12-25 19:29:25,708 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 7059
[2023-12-25 19:29:25,709 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 19:29:25,710 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-12-25 19:29:25,825 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (67)] Forceful destruction successful, exit code 0
[2023-12-25 19:29:25,936 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 67 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable69
[2023-12-25 19:29:25,937 INFO  L420      AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 19:29:25,937 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 19:29:25,937 INFO  L85        PathProgramCache]: Analyzing trace with hash 304022404, now seen corresponding path program 1 times
[2023-12-25 19:29:25,937 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 19:29:25,938 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1941580589]
[2023-12-25 19:29:25,938 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 19:29:25,938 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 19:29:26,461 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 19:29:26,461 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [141287622]
[2023-12-25 19:29:26,463 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 19:29:26,463 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 19:29:26,463 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 19:29:26,464 INFO  L229       MonitoredProcess]: Starting monitored process 68 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-25 19:29:26,464 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (68)] Waiting until timeout for monitored process
[2023-12-25 19:29:34,729 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 19:29:34,975 INFO  L262         TraceCheckSpWp]: Trace formula consists of 35416 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-12-25 19:29:35,061 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 19:29:35,403 INFO  L134       CoverageAnalysis]: Checked inductivity of 798 backedges. 124 proven. 0 refuted. 0 times theorem prover too weak. 674 trivial. 0 not checked.
[2023-12-25 19:29:35,404 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 19:29:35,404 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 19:29:35,404 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1941580589]
[2023-12-25 19:29:35,404 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 19:29:35,404 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [141287622]
[2023-12-25 19:29:35,404 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [141287622] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 19:29:35,404 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 19:29:35,405 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-12-25 19:29:35,405 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1737522220]
[2023-12-25 19:29:35,405 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 19:29:35,407 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-12-25 19:29:35,408 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 19:29:35,410 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-12-25 19:29:35,410 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-12-25 19:29:35,411 INFO  L87              Difference]: Start difference. First operand 10766 states and 17872 transitions. Second operand  has 7 states, 7 states have (on average 912.1428571428571) internal successors, (6385), 7 states have internal predecessors, (6385), 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)
[2023-12-25 19:29:35,924 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 19:29:35,924 INFO  L93              Difference]: Finished difference Result 29057 states and 48216 transitions.
[2023-12-25 19:29:35,925 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-12-25 19:29:35,926 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 912.1428571428571) internal successors, (6385), 7 states have internal predecessors, (6385), 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 7058
[2023-12-25 19:29:35,930 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 19:29:35,945 INFO  L225             Difference]: With dead ends: 29057
[2023-12-25 19:29:35,945 INFO  L226             Difference]: Without dead ends: 19734
[2023-12-25 19:29:35,953 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 7067 GetRequests, 7055 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-12-25 19:29:35,953 INFO  L413           NwaCegarLoop]: 17440 mSDtfsCounter, 43514 mSDsluCounter, 68059 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43514 SdHoareTripleChecker+Valid, 85499 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-12-25 19:29:35,953 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [43514 Valid, 85499 Invalid, 48 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-12-25 19:29:35,965 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 19734 states.
[2023-12-25 19:29:36,056 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 19734 to 10768.
[2023-12-25 19:29:36,066 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 10768 states, 10767 states have (on average 1.6600724435775982) internal successors, (17874), 10767 states have internal predecessors, (17874), 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)
[2023-12-25 19:29:36,076 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 10768 states to 10768 states and 17874 transitions.
[2023-12-25 19:29:36,076 INFO  L78                 Accepts]: Start accepts. Automaton has 10768 states and 17874 transitions. Word has length 7058
[2023-12-25 19:29:36,079 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 19:29:36,079 INFO  L495      AbstractCegarLoop]: Abstraction has 10768 states and 17874 transitions.
[2023-12-25 19:29:36,080 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 912.1428571428571) internal successors, (6385), 7 states have internal predecessors, (6385), 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)
[2023-12-25 19:29:36,080 INFO  L276                IsEmpty]: Start isEmpty. Operand 10768 states and 17874 transitions.
[2023-12-25 19:29:36,368 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 7060
[2023-12-25 19:29:36,369 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 19:29:36,370 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-12-25 19:29:36,481 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (68)] Ended with exit code 0
[2023-12-25 19:29:36,594 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70,68 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 19:29:36,594 INFO  L420      AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 19:29:36,594 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 19:29:36,595 INFO  L85        PathProgramCache]: Analyzing trace with hash 690343042, now seen corresponding path program 1 times
[2023-12-25 19:29:36,595 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 19:29:36,595 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1627733706]
[2023-12-25 19:29:36,596 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 19:29:36,596 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 19:29:37,096 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 19:29:37,096 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [971246211]
[2023-12-25 19:29:37,098 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 19:29:37,098 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 19:29:37,098 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 19:29:37,099 INFO  L229       MonitoredProcess]: Starting monitored process 69 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-25 19:29:37,100 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (69)] Waiting until timeout for monitored process
[2023-12-25 19:29:45,686 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 19:29:45,930 INFO  L262         TraceCheckSpWp]: Trace formula consists of 35419 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-12-25 19:29:46,015 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 19:29:46,457 INFO  L134       CoverageAnalysis]: Checked inductivity of 798 backedges. 126 proven. 0 refuted. 0 times theorem prover too weak. 672 trivial. 0 not checked.
[2023-12-25 19:29:46,458 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 19:29:46,458 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 19:29:46,458 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1627733706]
[2023-12-25 19:29:46,458 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 19:29:46,458 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [971246211]
[2023-12-25 19:29:46,458 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [971246211] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 19:29:46,458 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 19:29:46,459 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-12-25 19:29:46,459 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [826751244]
[2023-12-25 19:29:46,459 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 19:29:46,462 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-12-25 19:29:46,463 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 19:29:46,466 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-12-25 19:29:46,466 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-12-25 19:29:46,468 INFO  L87              Difference]: Start difference. First operand 10768 states and 17874 transitions. Second operand  has 7 states, 7 states have (on average 912.5714285714286) internal successors, (6388), 7 states have internal predecessors, (6388), 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)
[2023-12-25 19:29:46,912 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 19:29:46,913 INFO  L93              Difference]: Finished difference Result 29063 states and 48222 transitions.
[2023-12-25 19:29:46,913 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-12-25 19:29:46,914 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 912.5714285714286) internal successors, (6388), 7 states have internal predecessors, (6388), 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 7059
[2023-12-25 19:29:46,919 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 19:29:46,939 INFO  L225             Difference]: With dead ends: 29063
[2023-12-25 19:29:46,939 INFO  L226             Difference]: Without dead ends: 19735
[2023-12-25 19:29:46,950 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 7068 GetRequests, 7056 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-12-25 19:29:46,951 INFO  L413           NwaCegarLoop]: 17435 mSDtfsCounter, 43513 mSDsluCounter, 68044 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43513 SdHoareTripleChecker+Valid, 85479 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-12-25 19:29:46,951 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [43513 Valid, 85479 Invalid, 48 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-12-25 19:29:46,968 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 19735 states.
[2023-12-25 19:29:47,084 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 19735 to 10770.
[2023-12-25 19:29:47,095 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 10770 states, 10769 states have (on average 1.6599498560683443) internal successors, (17876), 10769 states have internal predecessors, (17876), 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)
[2023-12-25 19:29:47,106 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 10770 states to 10770 states and 17876 transitions.
[2023-12-25 19:29:47,106 INFO  L78                 Accepts]: Start accepts. Automaton has 10770 states and 17876 transitions. Word has length 7059
[2023-12-25 19:29:47,109 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 19:29:47,109 INFO  L495      AbstractCegarLoop]: Abstraction has 10770 states and 17876 transitions.
[2023-12-25 19:29:47,111 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 912.5714285714286) internal successors, (6388), 7 states have internal predecessors, (6388), 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)
[2023-12-25 19:29:47,111 INFO  L276                IsEmpty]: Start isEmpty. Operand 10770 states and 17876 transitions.
[2023-12-25 19:29:47,439 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 7061
[2023-12-25 19:29:47,440 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 19:29:47,441 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-12-25 19:29:47,565 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (69)] Forceful destruction successful, exit code 0
[2023-12-25 19:29:47,648 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 69 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable71
[2023-12-25 19:29:47,649 INFO  L420      AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 19:29:47,649 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 19:29:47,649 INFO  L85        PathProgramCache]: Analyzing trace with hash 1672344042, now seen corresponding path program 1 times
[2023-12-25 19:29:47,650 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 19:29:47,650 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1371396964]
[2023-12-25 19:29:47,650 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 19:29:47,650 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 19:29:48,185 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 19:29:48,185 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [953634900]
[2023-12-25 19:29:48,186 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 19:29:48,187 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 19:29:48,187 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 19:29:48,188 INFO  L229       MonitoredProcess]: Starting monitored process 70 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-25 19:29:48,189 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (70)] Waiting until timeout for monitored process
[2023-12-25 19:29:56,547 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 19:29:56,771 INFO  L262         TraceCheckSpWp]: Trace formula consists of 35422 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-12-25 19:29:56,846 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 19:29:57,113 INFO  L134       CoverageAnalysis]: Checked inductivity of 798 backedges. 128 proven. 0 refuted. 0 times theorem prover too weak. 670 trivial. 0 not checked.
[2023-12-25 19:29:57,113 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 19:29:57,114 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 19:29:57,114 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1371396964]
[2023-12-25 19:29:57,114 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 19:29:57,114 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [953634900]
[2023-12-25 19:29:57,114 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [953634900] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 19:29:57,114 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 19:29:57,114 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-12-25 19:29:57,114 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [524640356]
[2023-12-25 19:29:57,114 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 19:29:57,117 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-12-25 19:29:57,117 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 19:29:57,120 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-12-25 19:29:57,120 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-12-25 19:29:57,120 INFO  L87              Difference]: Start difference. First operand 10770 states and 17876 transitions. Second operand  has 7 states, 7 states have (on average 913.0) internal successors, (6391), 7 states have internal predecessors, (6391), 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)
[2023-12-25 19:29:57,614 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 19:29:57,614 INFO  L93              Difference]: Finished difference Result 29069 states and 48228 transitions.
[2023-12-25 19:29:57,614 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-12-25 19:29:57,615 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 913.0) internal successors, (6391), 7 states have internal predecessors, (6391), 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 7060
[2023-12-25 19:29:57,619 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 19:29:57,634 INFO  L225             Difference]: With dead ends: 29069
[2023-12-25 19:29:57,634 INFO  L226             Difference]: Without dead ends: 19736
[2023-12-25 19:29:57,642 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 7069 GetRequests, 7057 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-12-25 19:29:57,643 INFO  L413           NwaCegarLoop]: 17430 mSDtfsCounter, 43512 mSDsluCounter, 68029 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43512 SdHoareTripleChecker+Valid, 85459 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-12-25 19:29:57,643 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [43512 Valid, 85459 Invalid, 48 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-12-25 19:29:57,653 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 19736 states.
[2023-12-25 19:29:57,748 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 19736 to 10772.
[2023-12-25 19:29:57,757 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 10772 states, 10771 states have (on average 1.6598273140841147) internal successors, (17878), 10771 states have internal predecessors, (17878), 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)
[2023-12-25 19:29:57,767 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 10772 states to 10772 states and 17878 transitions.
[2023-12-25 19:29:57,767 INFO  L78                 Accepts]: Start accepts. Automaton has 10772 states and 17878 transitions. Word has length 7060
[2023-12-25 19:29:57,770 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 19:29:57,770 INFO  L495      AbstractCegarLoop]: Abstraction has 10772 states and 17878 transitions.
[2023-12-25 19:29:57,771 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 913.0) internal successors, (6391), 7 states have internal predecessors, (6391), 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)
[2023-12-25 19:29:57,771 INFO  L276                IsEmpty]: Start isEmpty. Operand 10772 states and 17878 transitions.
[2023-12-25 19:29:58,056 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 7062
[2023-12-25 19:29:58,056 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 19:29:58,058 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-12-25 19:29:58,173 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (70)] Forceful destruction successful, exit code 0
[2023-12-25 19:29:58,284 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72,70 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 19:29:58,285 INFO  L420      AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 19:29:58,285 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 19:29:58,285 INFO  L85        PathProgramCache]: Analyzing trace with hash 859975966, now seen corresponding path program 1 times
[2023-12-25 19:29:58,285 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 19:29:58,285 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1699523012]
[2023-12-25 19:29:58,286 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 19:29:58,286 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 19:29:58,792 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 19:29:58,793 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1347426163]
[2023-12-25 19:29:58,794 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 19:29:58,794 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 19:29:58,794 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 19:29:58,795 INFO  L229       MonitoredProcess]: Starting monitored process 71 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-25 19:29:58,797 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (71)] Waiting until timeout for monitored process
[2023-12-25 19:30:07,678 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 19:30:07,906 INFO  L262         TraceCheckSpWp]: Trace formula consists of 35426 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-12-25 19:30:07,979 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 19:30:08,329 INFO  L134       CoverageAnalysis]: Checked inductivity of 798 backedges. 130 proven. 0 refuted. 0 times theorem prover too weak. 668 trivial. 0 not checked.
[2023-12-25 19:30:08,329 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 19:30:08,329 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 19:30:08,329 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1699523012]
[2023-12-25 19:30:08,329 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 19:30:08,329 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1347426163]
[2023-12-25 19:30:08,329 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1347426163] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 19:30:08,329 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 19:30:08,330 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-12-25 19:30:08,330 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1554620551]
[2023-12-25 19:30:08,330 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 19:30:08,333 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-12-25 19:30:08,333 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 19:30:08,335 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-12-25 19:30:08,335 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-12-25 19:30:08,336 INFO  L87              Difference]: Start difference. First operand 10772 states and 17878 transitions. Second operand  has 7 states, 7 states have (on average 913.4285714285714) internal successors, (6394), 7 states have internal predecessors, (6394), 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)
[2023-12-25 19:30:08,833 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 19:30:08,833 INFO  L93              Difference]: Finished difference Result 29075 states and 48234 transitions.
[2023-12-25 19:30:08,833 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-12-25 19:30:08,834 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 913.4285714285714) internal successors, (6394), 7 states have internal predecessors, (6394), 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 7061
[2023-12-25 19:30:08,838 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 19:30:08,855 INFO  L225             Difference]: With dead ends: 29075
[2023-12-25 19:30:08,856 INFO  L226             Difference]: Without dead ends: 19737
[2023-12-25 19:30:08,867 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 7070 GetRequests, 7058 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-12-25 19:30:08,868 INFO  L413           NwaCegarLoop]: 17425 mSDtfsCounter, 43511 mSDsluCounter, 68014 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43511 SdHoareTripleChecker+Valid, 85439 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-12-25 19:30:08,868 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [43511 Valid, 85439 Invalid, 48 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-12-25 19:30:08,880 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 19737 states.
[2023-12-25 19:30:09,043 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 19737 to 10774.
[2023-12-25 19:30:09,052 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 10774 states, 10773 states have (on average 1.6597048175995543) internal successors, (17880), 10773 states have internal predecessors, (17880), 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)
[2023-12-25 19:30:09,062 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 10774 states to 10774 states and 17880 transitions.
[2023-12-25 19:30:09,062 INFO  L78                 Accepts]: Start accepts. Automaton has 10774 states and 17880 transitions. Word has length 7061
[2023-12-25 19:30:09,065 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 19:30:09,065 INFO  L495      AbstractCegarLoop]: Abstraction has 10774 states and 17880 transitions.
[2023-12-25 19:30:09,066 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 913.4285714285714) internal successors, (6394), 7 states have internal predecessors, (6394), 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)
[2023-12-25 19:30:09,066 INFO  L276                IsEmpty]: Start isEmpty. Operand 10774 states and 17880 transitions.
[2023-12-25 19:30:09,356 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 7063
[2023-12-25 19:30:09,356 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 19:30:09,358 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-12-25 19:30:09,464 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (71)] Forceful destruction successful, exit code 0
[2023-12-25 19:30:09,576 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73,71 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 19:30:09,576 INFO  L420      AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 19:30:09,577 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 19:30:09,577 INFO  L85        PathProgramCache]: Analyzing trace with hash 1082548818, now seen corresponding path program 1 times
[2023-12-25 19:30:09,577 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 19:30:09,577 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1853126205]
[2023-12-25 19:30:09,578 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 19:30:09,578 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 19:30:10,046 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 19:30:10,046 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1246613161]
[2023-12-25 19:30:10,047 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 19:30:10,047 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 19:30:10,047 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 19:30:10,048 INFO  L229       MonitoredProcess]: Starting monitored process 72 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-25 19:30:10,050 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (72)] Waiting until timeout for monitored process
[2023-12-25 19:30:18,223 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 19:30:18,455 INFO  L262         TraceCheckSpWp]: Trace formula consists of 35429 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-12-25 19:30:18,612 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 19:30:18,929 INFO  L134       CoverageAnalysis]: Checked inductivity of 798 backedges. 132 proven. 0 refuted. 0 times theorem prover too weak. 666 trivial. 0 not checked.
[2023-12-25 19:30:18,929 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 19:30:18,929 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 19:30:18,929 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1853126205]
[2023-12-25 19:30:18,930 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 19:30:18,930 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1246613161]
[2023-12-25 19:30:18,930 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1246613161] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 19:30:18,930 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 19:30:18,930 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-12-25 19:30:18,930 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [528187593]
[2023-12-25 19:30:18,930 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 19:30:18,933 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-12-25 19:30:18,933 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 19:30:18,936 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-12-25 19:30:18,936 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-12-25 19:30:18,936 INFO  L87              Difference]: Start difference. First operand 10774 states and 17880 transitions. Second operand  has 7 states, 7 states have (on average 913.8571428571429) internal successors, (6397), 7 states have internal predecessors, (6397), 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)
[2023-12-25 19:30:19,384 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 19:30:19,384 INFO  L93              Difference]: Finished difference Result 29081 states and 48240 transitions.
[2023-12-25 19:30:19,384 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-12-25 19:30:19,386 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 913.8571428571429) internal successors, (6397), 7 states have internal predecessors, (6397), 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 7062
[2023-12-25 19:30:19,389 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 19:30:19,405 INFO  L225             Difference]: With dead ends: 29081
[2023-12-25 19:30:19,405 INFO  L226             Difference]: Without dead ends: 19738
[2023-12-25 19:30:19,416 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 7071 GetRequests, 7059 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-12-25 19:30:19,416 INFO  L413           NwaCegarLoop]: 17420 mSDtfsCounter, 43510 mSDsluCounter, 67999 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43510 SdHoareTripleChecker+Valid, 85419 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-12-25 19:30:19,416 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [43510 Valid, 85419 Invalid, 48 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-12-25 19:30:19,427 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 19738 states.
[2023-12-25 19:30:19,553 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 19738 to 10776.
[2023-12-25 19:30:19,562 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 10776 states, 10775 states have (on average 1.6595823665893272) internal successors, (17882), 10775 states have internal predecessors, (17882), 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)
[2023-12-25 19:30:19,572 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 10776 states to 10776 states and 17882 transitions.
[2023-12-25 19:30:19,572 INFO  L78                 Accepts]: Start accepts. Automaton has 10776 states and 17882 transitions. Word has length 7062
[2023-12-25 19:30:19,575 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 19:30:19,575 INFO  L495      AbstractCegarLoop]: Abstraction has 10776 states and 17882 transitions.
[2023-12-25 19:30:19,576 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 913.8571428571429) internal successors, (6397), 7 states have internal predecessors, (6397), 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)
[2023-12-25 19:30:19,576 INFO  L276                IsEmpty]: Start isEmpty. Operand 10776 states and 17882 transitions.
[2023-12-25 19:30:19,864 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 7064
[2023-12-25 19:30:19,864 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 19:30:19,865 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-12-25 19:30:19,977 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (72)] Forceful destruction successful, exit code 0
[2023-12-25 19:30:20,085 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74,72 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 19:30:20,085 INFO  L420      AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 19:30:20,085 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 19:30:20,086 INFO  L85        PathProgramCache]: Analyzing trace with hash -413555784, now seen corresponding path program 1 times
[2023-12-25 19:30:20,086 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 19:30:20,086 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [513140410]
[2023-12-25 19:30:20,087 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 19:30:20,087 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 19:30:20,667 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 19:30:20,668 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [366360780]
[2023-12-25 19:30:20,669 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 19:30:20,669 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 19:30:20,669 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 19:30:20,670 INFO  L229       MonitoredProcess]: Starting monitored process 73 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-25 19:30:20,673 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (73)] Waiting until timeout for monitored process
Received shutdown request...
[2023-12-25 19:30:26,557 WARN  L340       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (73)] Timeout while monitored process is still running, waiting 1000 ms for graceful end
[2023-12-25 19:30:26,557 WARN  L340       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end
[2023-12-25 19:30:27,601 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0
[2023-12-25 19:30:27,757 WARN  L435       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (73)] Forcibly destroying the process
[2023-12-25 19:30:27,773 ERROR L246   FreeRefinementEngine]: Caught known exception: Timeout or Toolchain cancelled by user
[2023-12-25 19:30:27,775 INFO  L805   garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining)
[2023-12-25 19:30:27,776 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 73 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable75
[2023-12-25 19:30:27,776 WARN  L619      AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was analyzing trace of length 7064 with TraceHistMax 2,while AutomatonFreeRefinementEngine was Timeout during CAMEL.
[2023-12-25 19:30:27,779 INFO  L445         BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-12-25 19:30:27,781 INFO  L179   ceAbstractionStarter]: Computing trace abstraction results
[2023-12-25 19:30:27,782 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (73)] Forceful destruction successful, exit code 137
[2023-12-25 19:30:27,782 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.12 07:30:27 BoogieIcfgContainer
[2023-12-25 19:30:27,782 INFO  L131        PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2023-12-25 19:30:27,783 INFO  L158              Benchmark]: Toolchain (without parser) took 809336.01ms. Allocated memory was 176.2MB in the beginning and 6.8GB in the end (delta: 6.6GB). Free memory was 118.2MB in the beginning and 5.3GB in the end (delta: -5.2GB). Peak memory consumption was 1.7GB. Max. memory is 8.0GB.
[2023-12-25 19:30:27,783 INFO  L158              Benchmark]: CDTParser took 0.10ms. Allocated memory is still 176.2MB. Free memory is still 134.3MB. There was no memory consumed. Max. memory is 8.0GB.
[2023-12-25 19:30:27,783 INFO  L158              Benchmark]: CACSL2BoogieTranslator took 1775.95ms. Allocated memory was 176.2MB in the beginning and 553.6MB in the end (delta: 377.5MB). Free memory was 118.2MB in the beginning and 314.9MB in the end (delta: -196.7MB). Peak memory consumption was 211.6MB. Max. memory is 8.0GB.
[2023-12-25 19:30:27,783 INFO  L158              Benchmark]: Boogie Procedure Inliner took 3466.81ms. Allocated memory was 553.6MB in the beginning and 3.6GB in the end (delta: 3.1GB). Free memory was 314.9MB in the beginning and 3.0GB in the end (delta: -2.7GB). Peak memory consumption was 561.5MB. Max. memory is 8.0GB.
[2023-12-25 19:30:27,783 INFO  L158              Benchmark]: Boogie Preprocessor took 3642.76ms. Allocated memory was 3.6GB in the beginning and 5.4GB in the end (delta: 1.7GB). Free memory was 3.0GB in the beginning and 4.5GB in the end (delta: -1.5GB). Peak memory consumption was 303.0MB. Max. memory is 8.0GB.
[2023-12-25 19:30:27,783 INFO  L158              Benchmark]: RCFGBuilder took 16939.32ms. Allocated memory is still 5.4GB. Free memory was 4.5GB in the beginning and 4.3GB in the end (delta: 186.4MB). Peak memory consumption was 819.8MB. Max. memory is 8.0GB.
[2023-12-25 19:30:27,783 INFO  L158              Benchmark]: TraceAbstraction took 783505.37ms. Allocated memory was 5.4GB in the beginning and 6.8GB in the end (delta: 1.4GB). Free memory was 4.3GB in the beginning and 5.3GB in the end (delta: -967.8MB). Peak memory consumption was 677.6MB. Max. memory is 8.0GB.
[2023-12-25 19:30:27,784 INFO  L338   ainManager$Toolchain]: #######################  End [Toolchain 1] #######################
 --- Results ---
 * Results from de.uni_freiburg.informatik.ultimate.core:
  - StatisticsResult: Toolchain Benchmarks
    Benchmark results are:
 * CDTParser took 0.10ms. Allocated memory is still 176.2MB. Free memory is still 134.3MB. There was no memory consumed. Max. memory is 8.0GB.
 * CACSL2BoogieTranslator took 1775.95ms. Allocated memory was 176.2MB in the beginning and 553.6MB in the end (delta: 377.5MB). Free memory was 118.2MB in the beginning and 314.9MB in the end (delta: -196.7MB). Peak memory consumption was 211.6MB. Max. memory is 8.0GB.
 * Boogie Procedure Inliner took 3466.81ms. Allocated memory was 553.6MB in the beginning and 3.6GB in the end (delta: 3.1GB). Free memory was 314.9MB in the beginning and 3.0GB in the end (delta: -2.7GB). Peak memory consumption was 561.5MB. Max. memory is 8.0GB.
 * Boogie Preprocessor took 3642.76ms. Allocated memory was 3.6GB in the beginning and 5.4GB in the end (delta: 1.7GB). Free memory was 3.0GB in the beginning and 4.5GB in the end (delta: -1.5GB). Peak memory consumption was 303.0MB. Max. memory is 8.0GB.
 * RCFGBuilder took 16939.32ms. Allocated memory is still 5.4GB. Free memory was 4.5GB in the beginning and 4.3GB in the end (delta: 186.4MB). Peak memory consumption was 819.8MB. Max. memory is 8.0GB.
 * TraceAbstraction took 783505.37ms. Allocated memory was 5.4GB in the beginning and 6.8GB in the end (delta: 1.4GB). Free memory was 4.3GB in the beginning and 5.3GB in the end (delta: -967.8MB). Peak memory consumption was 677.6MB. Max. memory is 8.0GB.
 * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction:
  - StatisticsResult: ErrorAutomatonStatistics
    NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0
  - TimeoutResultAtElement [Line: 21]: Timeout (TraceAbstraction)
    Unable to prove that a call to reach_error is unreachable (line 21). Cancelled while NwaCegarLoop was analyzing trace of length 7064 with TraceHistMax 2,while AutomatonFreeRefinementEngine was Timeout during CAMEL.
  - StatisticsResult: Ultimate Automizer benchmark data
    CFG has 1 procedures, 9449 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 783.4s, OverallIterations: 76, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 22.0s, AutomataDifference: 37.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2819989 SdHoareTripleChecker+Valid, 6.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2819989 mSDsluCounter, 6023491 SdHoareTripleChecker+Invalid, 6.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 4723211 mSDsCounter, 4 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 3230 IncrementalHoareTripleChecker+Invalid, 3234 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 4 mSolverCounterUnsat, 1300280 mSDtfsCounter, 3230 mSolverCounterSat, 8.3s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 499535 GetRequests, 498748 SyntacticMatches, 0 SemanticMatches, 787 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1077 ImplicationChecksByTransitivity, 2.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=10776occurred in iteration=75, InterpolantAutomatonStates: 681, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 11.1s AutomataMinimizationTime, 75 MinimizatonAttempts, 584654 StatesRemovedByMinimization, 74 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 139.2s SsaConstructionTime, 368.4s SatisfiabilityAnalysisTime, 54.8s InterpolantComputationTime, 503303 NumberOfCodeBlocks, 503303 NumberOfCodeBlocksAsserted, 75 NumberOfCheckSat, 503228 ConstructedInterpolants, 0 QuantifiedInterpolants, 541996 SizeOfPredicates, 323 NumberOfNonLiveVariables, 2507452 ConjunctsInSsa, 1247 ConjunctsInUnsatCore, 75 InterpolantComputations, 75 PerfectInterpolantSequences, 56658/56658 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available
RESULT: Ultimate could not prove your program: Timeout
Completed graceful shutdown