/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.needham.4.prop3-func-interl.c


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


This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m
[2023-12-25 20:15:22,441 INFO  L188        SettingsManager]: Resetting all preferences to default values...
[2023-12-25 20:15:22,514 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 20:15:22,518 WARN  L101        SettingsManager]: Preference file contains the following unknown settings:
[2023-12-25 20:15:22,519 WARN  L103        SettingsManager]:   * de.uni_freiburg.informatik.ultimate.core.Log level for class
[2023-12-25 20:15:22,541 INFO  L130        SettingsManager]: Preferences different from defaults after loading the file:
[2023-12-25 20:15:22,541 INFO  L151        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2023-12-25 20:15:22,541 INFO  L153        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2023-12-25 20:15:22,542 INFO  L151        SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults:
[2023-12-25 20:15:22,545 INFO  L153        SettingsManager]:  * Use memory slicer=true
[2023-12-25 20:15:22,545 INFO  L151        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2023-12-25 20:15:22,545 INFO  L153        SettingsManager]:  * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2023-12-25 20:15:22,545 INFO  L151        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2023-12-25 20:15:22,546 INFO  L153        SettingsManager]:  * Create parallel compositions if possible=false
[2023-12-25 20:15:22,546 INFO  L153        SettingsManager]:  * Use SBE=true
[2023-12-25 20:15:22,547 INFO  L151        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2023-12-25 20:15:22,547 INFO  L153        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2023-12-25 20:15:22,547 INFO  L153        SettingsManager]:  * Overapproximate operations on floating types=true
[2023-12-25 20:15:22,547 INFO  L153        SettingsManager]:  * Check division by zero=IGNORE
[2023-12-25 20:15:22,560 INFO  L153        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2023-12-25 20:15:22,560 INFO  L153        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2023-12-25 20:15:22,560 INFO  L153        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2023-12-25 20:15:22,561 INFO  L153        SettingsManager]:  * Allow undefined functions=false
[2023-12-25 20:15:22,561 INFO  L153        SettingsManager]:  * Check if freed pointer was valid=false
[2023-12-25 20:15:22,561 INFO  L153        SettingsManager]:  * Use constant arrays=true
[2023-12-25 20:15:22,561 INFO  L151        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2023-12-25 20:15:22,561 INFO  L153        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2023-12-25 20:15:22,561 INFO  L153        SettingsManager]:  * Only consider context switches at boundaries of atomic blocks=true
[2023-12-25 20:15:22,562 INFO  L153        SettingsManager]:  * SMT solver=External_DefaultMode
[2023-12-25 20:15:22,562 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2023-12-25 20:15:22,562 INFO  L151        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2023-12-25 20:15:22,562 INFO  L153        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2023-12-25 20:15:22,562 INFO  L153        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopHeads
[2023-12-25 20:15:22,562 INFO  L153        SettingsManager]:  * Trace refinement strategy=CAMEL
[2023-12-25 20:15:22,562 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2023-12-25 20:15:22,563 INFO  L153        SettingsManager]:  * Apply one-shot large block encoding in concurrent analysis=false
[2023-12-25 20:15:22,563 INFO  L153        SettingsManager]:  * Automaton type used in concurrency analysis=PETRI_NET
[2023-12-25 20:15:22,563 INFO  L153        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2023-12-25 20:15:22,563 INFO  L153        SettingsManager]:  * Order on configurations for Petri net unfoldings=DBO
[2023-12-25 20:15:22,563 INFO  L153        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2023-12-25 20:15:22,563 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$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true
[2023-12-25 20:15:22,744 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2023-12-25 20:15:22,761 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2023-12-25 20:15:22,762 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2023-12-25 20:15:22,763 INFO  L270        PluginConnector]: Initializing CDTParser...
[2023-12-25 20:15:22,764 INFO  L274        PluginConnector]: CDTParser initialized
[2023-12-25 20:15:22,764 INFO  L431   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.needham.4.prop3-func-interl.c
[2023-12-25 20:15:23,915 INFO  L533              CDTParser]: Created temporary CDT project at NULL
[2023-12-25 20:15:24,241 INFO  L384              CDTParser]: Found 1 translation units.
[2023-12-25 20:15:24,242 INFO  L180              CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.needham.4.prop3-func-interl.c
[2023-12-25 20:15:24,265 INFO  L427              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/664aba259/ddc889a2fc5844099c005fbb8e673790/FLAGb70527d43
[2023-12-25 20:15:24,277 INFO  L435              CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/664aba259/ddc889a2fc5844099c005fbb8e673790
[2023-12-25 20:15:24,279 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2023-12-25 20:15:24,281 INFO  L133        ToolchainWalker]: Walking toolchain with 5 elements.
[2023-12-25 20:15:24,283 INFO  L112        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2023-12-25 20:15:24,283 INFO  L270        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2023-12-25 20:15:24,286 INFO  L274        PluginConnector]: CACSL2BoogieTranslator initialized
[2023-12-25 20:15:24,287 INFO  L184        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.12 08:15:24" (1/1) ...
[2023-12-25 20:15:24,287 INFO  L204        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2998d396 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 08:15:24, skipping insertion in model container
[2023-12-25 20:15:24,287 INFO  L184        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.12 08:15:24" (1/1) ...
[2023-12-25 20:15:24,372 INFO  L177         MainTranslator]: Built tables and reachable declarations
[2023-12-25 20:15:24,518 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.needham.4.prop3-func-interl.c[1174,1187]
[2023-12-25 20:15:25,107 INFO  L209          PostProcessor]: Analyzing one entry point: main
[2023-12-25 20:15:25,115 INFO  L202         MainTranslator]: Completed pre-run
[2023-12-25 20:15:25,124 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.needham.4.prop3-func-interl.c[1174,1187]
[2023-12-25 20:15:25,487 INFO  L209          PostProcessor]: Analyzing one entry point: main
[2023-12-25 20:15:25,586 INFO  L206         MainTranslator]: Completed translation
[2023-12-25 20:15:25,587 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 08:15:25 WrapperNode
[2023-12-25 20:15:25,587 INFO  L131        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2023-12-25 20:15:25,589 INFO  L112        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2023-12-25 20:15:25,589 INFO  L270        PluginConnector]: Initializing Boogie Procedure Inliner...
[2023-12-25 20:15:25,589 INFO  L274        PluginConnector]: Boogie Procedure Inliner initialized
[2023-12-25 20:15:25,595 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 08:15:25" (1/1) ...
[2023-12-25 20:15:25,744 INFO  L184        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 08:15:25" (1/1) ...
[2023-12-25 20:15:27,811 INFO  L138                Inliner]: procedures = 17, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 31039
[2023-12-25 20:15:27,811 INFO  L131        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2023-12-25 20:15:27,812 INFO  L112        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2023-12-25 20:15:27,812 INFO  L270        PluginConnector]: Initializing Boogie Preprocessor...
[2023-12-25 20:15:27,812 INFO  L274        PluginConnector]: Boogie Preprocessor initialized
[2023-12-25 20:15:27,820 INFO  L184        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 08:15:25" (1/1) ...
[2023-12-25 20:15:27,820 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 08:15:25" (1/1) ...
[2023-12-25 20:15:28,534 INFO  L184        PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 08:15:25" (1/1) ...
[2023-12-25 20:15:28,864 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 20:15:28,864 INFO  L184        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 08:15:25" (1/1) ...
[2023-12-25 20:15:28,872 INFO  L184        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 08:15:25" (1/1) ...
[2023-12-25 20:15:29,534 INFO  L184        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 08:15:25" (1/1) ...
[2023-12-25 20:15:29,627 INFO  L184        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 08:15:25" (1/1) ...
[2023-12-25 20:15:29,745 INFO  L184        PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 08:15:25" (1/1) ...
[2023-12-25 20:15:29,816 INFO  L184        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 08:15:25" (1/1) ...
[2023-12-25 20:15:30,320 INFO  L131        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2023-12-25 20:15:30,325 INFO  L112        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2023-12-25 20:15:30,325 INFO  L270        PluginConnector]: Initializing RCFGBuilder...
[2023-12-25 20:15:30,325 INFO  L274        PluginConnector]: RCFGBuilder initialized
[2023-12-25 20:15:30,325 INFO  L184        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 08:15:25" (1/1) ...
[2023-12-25 20:15:30,329 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2023-12-25 20:15:30,335 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 20:15:30,345 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 20:15:30,364 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 20:15:30,384 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2023-12-25 20:15:30,384 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int#0
[2023-12-25 20:15:30,384 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2023-12-25 20:15:30,384 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2023-12-25 20:15:31,551 INFO  L241             CfgBuilder]: Building ICFG
[2023-12-25 20:15:31,553 INFO  L267             CfgBuilder]: Building CFG for each procedure with an implementation
[2023-12-25 20:15:42,975 INFO  L282             CfgBuilder]: Performing block encoding
[2023-12-25 20:15:43,293 INFO  L304             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2023-12-25 20:15:43,293 INFO  L309             CfgBuilder]: Removed 1 assume(true) statements.
[2023-12-25 20:15:43,293 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.12 08:15:43 BoogieIcfgContainer
[2023-12-25 20:15:43,293 INFO  L131        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2023-12-25 20:15:43,295 INFO  L112        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2023-12-25 20:15:43,295 INFO  L270        PluginConnector]: Initializing TraceAbstraction...
[2023-12-25 20:15:43,297 INFO  L274        PluginConnector]: TraceAbstraction initialized
[2023-12-25 20:15:43,297 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.12 08:15:24" (1/3) ...
[2023-12-25 20:15:43,298 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56a172a7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.12 08:15:43, skipping insertion in model container
[2023-12-25 20:15:43,298 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 08:15:25" (2/3) ...
[2023-12-25 20:15:43,298 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56a172a7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.12 08:15:43, skipping insertion in model container
[2023-12-25 20:15:43,298 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.12 08:15:43" (3/3) ...
[2023-12-25 20:15:43,299 INFO  L112   eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.needham.4.prop3-func-interl.c
[2023-12-25 20:15:43,310 INFO  L204   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2023-12-25 20:15:43,310 INFO  L163   ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2023-12-25 20:15:43,423 INFO  L356      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2023-12-25 20:15:43,428 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;@36626bf6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2023-12-25 20:15:43,428 INFO  L358      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2023-12-25 20:15:43,446 INFO  L276                IsEmpty]: Start isEmpty. Operand  has 7392 states, 7390 states have (on average 1.6706359945872802) internal successors, (12346), 7391 states have internal predecessors, (12346), 0 states have call successors, (0), 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 20:15:43,481 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 399
[2023-12-25 20:15:43,481 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 20:15:43,482 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]
[2023-12-25 20:15:43,482 INFO  L420      AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 20:15:43,486 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 20:15:43,486 INFO  L85        PathProgramCache]: Analyzing trace with hash 561665278, now seen corresponding path program 1 times
[2023-12-25 20:15:43,493 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 20:15:43,494 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [820999420]
[2023-12-25 20:15:43,494 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 20:15:43,495 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 20:15:43,942 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 20:15:45,066 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 20:15:45,066 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 20:15:45,066 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [820999420]
[2023-12-25 20:15:45,067 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [820999420] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 20:15:45,067 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 20:15:45,067 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-12-25 20:15:45,068 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1972426893]
[2023-12-25 20:15:45,069 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 20:15:45,074 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-12-25 20:15:45,074 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 20:15:45,099 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-12-25 20:15:45,099 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2023-12-25 20:15:45,115 INFO  L87              Difference]: Start difference. First operand  has 7392 states, 7390 states have (on average 1.6706359945872802) internal successors, (12346), 7391 states have internal predecessors, (12346), 0 states have call successors, (0), 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 5 states, 5 states have (on average 79.6) internal successors, (398), 4 states have internal predecessors, (398), 0 states have call successors, (0), 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 20:15:51,509 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 20:15:51,509 INFO  L93              Difference]: Finished difference Result 21756 states and 36344 transitions.
[2023-12-25 20:15:51,511 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2023-12-25 20:15:51,512 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 79.6) internal successors, (398), 4 states have internal predecessors, (398), 0 states have call successors, (0), 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 398
[2023-12-25 20:15:51,513 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 20:15:51,583 INFO  L225             Difference]: With dead ends: 21756
[2023-12-25 20:15:51,583 INFO  L226             Difference]: Without dead ends: 14572
[2023-12-25 20:15:51,604 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42
[2023-12-25 20:15:51,608 INFO  L413           NwaCegarLoop]: 9822 mSDtfsCounter, 35943 mSDsluCounter, 19638 mSDsCounter, 0 mSdLazyCounter, 7565 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35943 SdHoareTripleChecker+Valid, 29460 SdHoareTripleChecker+Invalid, 7566 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 7565 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.7s IncrementalHoareTripleChecker+Time
[2023-12-25 20:15:51,610 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [35943 Valid, 29460 Invalid, 7566 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 7565 Invalid, 0 Unknown, 0 Unchecked, 5.7s Time]
[2023-12-25 20:15:51,652 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14572 states.
[2023-12-25 20:15:51,847 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14572 to 7768.
[2023-12-25 20:15:51,876 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7768 states, 7767 states have (on average 1.669885412643234) internal successors, (12970), 7767 states have internal predecessors, (12970), 0 states have call successors, (0), 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 20:15:51,901 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7768 states to 7768 states and 12970 transitions.
[2023-12-25 20:15:51,902 INFO  L78                 Accepts]: Start accepts. Automaton has 7768 states and 12970 transitions. Word has length 398
[2023-12-25 20:15:51,905 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 20:15:51,905 INFO  L495      AbstractCegarLoop]: Abstraction has 7768 states and 12970 transitions.
[2023-12-25 20:15:51,906 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 79.6) internal successors, (398), 4 states have internal predecessors, (398), 0 states have call successors, (0), 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 20:15:51,906 INFO  L276                IsEmpty]: Start isEmpty. Operand 7768 states and 12970 transitions.
[2023-12-25 20:15:51,913 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 400
[2023-12-25 20:15:51,913 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 20:15:51,913 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]
[2023-12-25 20:15:51,914 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2023-12-25 20:15:51,914 INFO  L420      AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 20:15:51,914 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 20:15:51,915 INFO  L85        PathProgramCache]: Analyzing trace with hash -1202053220, now seen corresponding path program 1 times
[2023-12-25 20:15:51,915 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 20:15:51,915 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1432282522]
[2023-12-25 20:15:51,915 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 20:15:51,916 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 20:15:52,086 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 20:15:52,973 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 20:15:52,973 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 20:15:52,974 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1432282522]
[2023-12-25 20:15:52,974 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1432282522] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 20:15:52,974 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 20:15:52,974 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-12-25 20:15:52,974 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2080569708]
[2023-12-25 20:15:52,974 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 20:15:52,977 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-12-25 20:15:52,979 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 20:15:52,980 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-12-25 20:15:52,980 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-12-25 20:15:52,980 INFO  L87              Difference]: Start difference. First operand 7768 states and 12970 transitions. Second operand  has 4 states, 4 states have (on average 99.75) internal successors, (399), 4 states have internal predecessors, (399), 0 states have call successors, (0), 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 20:15:53,111 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 20:15:53,111 INFO  L93              Difference]: Finished difference Result 7772 states and 12974 transitions.
[2023-12-25 20:15:53,112 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-12-25 20:15:53,112 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 99.75) internal successors, (399), 4 states have internal predecessors, (399), 0 states have call successors, (0), 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 399
[2023-12-25 20:15:53,113 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 20:15:53,133 INFO  L225             Difference]: With dead ends: 7772
[2023-12-25 20:15:53,133 INFO  L226             Difference]: Without dead ends: 7770
[2023-12-25 20:15:53,136 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 20:15:53,138 INFO  L413           NwaCegarLoop]: 12339 mSDtfsCounter, 1 mSDsluCounter, 24673 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 37012 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2023-12-25 20:15:53,138 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 37012 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-12-25 20:15:53,149 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 7770 states.
[2023-12-25 20:15:53,235 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 7770 to 7770.
[2023-12-25 20:15:53,245 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7770 states, 7769 states have (on average 1.6697129617711417) internal successors, (12972), 7769 states have internal predecessors, (12972), 0 states have call successors, (0), 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 20:15:53,258 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7770 states to 7770 states and 12972 transitions.
[2023-12-25 20:15:53,258 INFO  L78                 Accepts]: Start accepts. Automaton has 7770 states and 12972 transitions. Word has length 399
[2023-12-25 20:15:53,259 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 20:15:53,259 INFO  L495      AbstractCegarLoop]: Abstraction has 7770 states and 12972 transitions.
[2023-12-25 20:15:53,259 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 99.75) internal successors, (399), 4 states have internal predecessors, (399), 0 states have call successors, (0), 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 20:15:53,259 INFO  L276                IsEmpty]: Start isEmpty. Operand 7770 states and 12972 transitions.
[2023-12-25 20:15:53,262 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 401
[2023-12-25 20:15:53,262 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 20:15:53,262 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]
[2023-12-25 20:15:53,263 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2023-12-25 20:15:53,263 INFO  L420      AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 20:15:53,269 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 20:15:53,269 INFO  L85        PathProgramCache]: Analyzing trace with hash 1392783156, now seen corresponding path program 1 times
[2023-12-25 20:15:53,270 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 20:15:53,270 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1776603138]
[2023-12-25 20:15:53,270 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 20:15:53,270 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 20:15:53,378 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 20:15:53,829 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 20:15:53,829 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 20:15:53,830 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1776603138]
[2023-12-25 20:15:53,830 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1776603138] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 20:15:53,830 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 20:15:53,830 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-12-25 20:15:53,830 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1423467482]
[2023-12-25 20:15:53,831 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 20:15:53,831 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-12-25 20:15:53,831 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 20:15:53,832 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-12-25 20:15:53,833 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-12-25 20:15:53,834 INFO  L87              Difference]: Start difference. First operand 7770 states and 12972 transitions. Second operand  has 4 states, 4 states have (on average 100.0) internal successors, (400), 4 states have internal predecessors, (400), 0 states have call successors, (0), 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 20:15:53,972 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 20:15:53,973 INFO  L93              Difference]: Finished difference Result 14957 states and 24974 transitions.
[2023-12-25 20:15:53,973 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-12-25 20:15:53,973 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 100.0) internal successors, (400), 4 states have internal predecessors, (400), 0 states have call successors, (0), 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 400
[2023-12-25 20:15:53,974 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 20:15:53,997 INFO  L225             Difference]: With dead ends: 14957
[2023-12-25 20:15:53,997 INFO  L226             Difference]: Without dead ends: 7773
[2023-12-25 20:15:54,007 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 20:15:54,009 INFO  L413           NwaCegarLoop]: 12339 mSDtfsCounter, 1 mSDsluCounter, 24671 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 37010 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2023-12-25 20:15:54,009 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 37010 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-12-25 20:15:54,018 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 7773 states.
[2023-12-25 20:15:54,103 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 7773 to 7772.
[2023-12-25 20:15:54,112 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7772 states, 7771 states have (on average 1.6695405996654227) internal successors, (12974), 7771 states have internal predecessors, (12974), 0 states have call successors, (0), 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 20:15:54,126 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7772 states to 7772 states and 12974 transitions.
[2023-12-25 20:15:54,126 INFO  L78                 Accepts]: Start accepts. Automaton has 7772 states and 12974 transitions. Word has length 400
[2023-12-25 20:15:54,127 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 20:15:54,127 INFO  L495      AbstractCegarLoop]: Abstraction has 7772 states and 12974 transitions.
[2023-12-25 20:15:54,128 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 100.0) internal successors, (400), 4 states have internal predecessors, (400), 0 states have call successors, (0), 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 20:15:54,129 INFO  L276                IsEmpty]: Start isEmpty. Operand 7772 states and 12974 transitions.
[2023-12-25 20:15:54,135 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 402
[2023-12-25 20:15:54,135 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 20:15:54,140 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]
[2023-12-25 20:15:54,140 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2023-12-25 20:15:54,141 INFO  L420      AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 20:15:54,141 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 20:15:54,141 INFO  L85        PathProgramCache]: Analyzing trace with hash 16174774, now seen corresponding path program 1 times
[2023-12-25 20:15:54,141 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 20:15:54,141 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [232683935]
[2023-12-25 20:15:54,141 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 20:15:54,141 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 20:15:54,286 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 20:15:55,182 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 20:15:55,182 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 20:15:55,182 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [232683935]
[2023-12-25 20:15:55,182 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [232683935] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 20:15:55,183 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 20:15:55,183 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-12-25 20:15:55,183 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1320138299]
[2023-12-25 20:15:55,183 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 20:15:55,183 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-12-25 20:15:55,183 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 20:15:55,184 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-12-25 20:15:55,184 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2023-12-25 20:15:55,184 INFO  L87              Difference]: Start difference. First operand 7772 states and 12974 transitions. Second operand  has 5 states, 5 states have (on average 80.2) internal successors, (401), 4 states have internal predecessors, (401), 0 states have call successors, (0), 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 20:15:55,480 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 20:15:55,480 INFO  L93              Difference]: Finished difference Result 22134 states and 36959 transitions.
[2023-12-25 20:15:55,481 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2023-12-25 20:15:55,481 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 80.2) internal successors, (401), 4 states have internal predecessors, (401), 0 states have call successors, (0), 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 401
[2023-12-25 20:15:55,481 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 20:15:55,501 INFO  L225             Difference]: With dead ends: 22134
[2023-12-25 20:15:55,501 INFO  L226             Difference]: Without dead ends: 14948
[2023-12-25 20:15:55,512 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56
[2023-12-25 20:15:55,516 INFO  L413           NwaCegarLoop]: 12955 mSDtfsCounter, 48533 mSDsluCounter, 24656 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48533 SdHoareTripleChecker+Valid, 37611 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-12-25 20:15:55,517 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [48533 Valid, 37611 Invalid, 40 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-12-25 20:15:55,534 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14948 states.
[2023-12-25 20:15:55,643 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14948 to 7774.
[2023-12-25 20:15:55,654 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7774 states, 7773 states have (on average 1.6693683262575583) internal successors, (12976), 7773 states have internal predecessors, (12976), 0 states have call successors, (0), 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 20:15:55,664 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7774 states to 7774 states and 12976 transitions.
[2023-12-25 20:15:55,664 INFO  L78                 Accepts]: Start accepts. Automaton has 7774 states and 12976 transitions. Word has length 401
[2023-12-25 20:15:55,664 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 20:15:55,665 INFO  L495      AbstractCegarLoop]: Abstraction has 7774 states and 12976 transitions.
[2023-12-25 20:15:55,665 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 80.2) internal successors, (401), 4 states have internal predecessors, (401), 0 states have call successors, (0), 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 20:15:55,665 INFO  L276                IsEmpty]: Start isEmpty. Operand 7774 states and 12976 transitions.
[2023-12-25 20:15:55,824 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5043
[2023-12-25 20:15:55,824 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 20:15:55,827 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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[2023-12-25 20:15:55,827 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3
[2023-12-25 20:15:55,827 INFO  L420      AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 20:15:55,828 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 20:15:55,828 INFO  L85        PathProgramCache]: Analyzing trace with hash 1808243273, now seen corresponding path program 1 times
[2023-12-25 20:15:55,828 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 20:15:55,828 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [539203201]
[2023-12-25 20:15:55,829 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 20:15:55,829 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 20:15:56,313 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 20:15:56,313 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1978771427]
[2023-12-25 20:15:56,314 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 20:15:56,314 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 20:15:56,314 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 20:15:56,335 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 20:15:56,371 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 20:16:01,107 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 20:16:01,241 INFO  L262         TraceCheckSpWp]: Trace formula consists of 20856 conjuncts, 6 conjunts are in the unsatisfiable core
[2023-12-25 20:16:01,325 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 20:16:01,421 INFO  L134       CoverageAnalysis]: Checked inductivity of 258 backedges. 258 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-25 20:16:01,422 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 20:16:01,422 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 20:16:01,422 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [539203201]
[2023-12-25 20:16:01,422 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 20:16:01,422 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1978771427]
[2023-12-25 20:16:01,422 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1978771427] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 20:16:01,422 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 20:16:01,423 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-12-25 20:16:01,423 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [987793082]
[2023-12-25 20:16:01,423 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 20:16:01,427 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-12-25 20:16:01,427 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 20:16:01,431 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-12-25 20:16:01,431 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-12-25 20:16:01,432 INFO  L87              Difference]: Start difference. First operand 7774 states and 12976 transitions. Second operand  has 4 states, 4 states have (on average 1260.5) internal successors, (5042), 4 states have internal predecessors, (5042), 0 states have call successors, (0), 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 20:16:01,712 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 20:16:01,712 INFO  L93              Difference]: Finished difference Result 14970 states and 24992 transitions.
[2023-12-25 20:16:01,714 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-12-25 20:16:01,715 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 1260.5) internal successors, (5042), 4 states have internal predecessors, (5042), 0 states have call successors, (0), 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 5042
[2023-12-25 20:16:01,716 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 20:16:01,725 INFO  L225             Difference]: With dead ends: 14970
[2023-12-25 20:16:01,725 INFO  L226             Difference]: Without dead ends: 7784
[2023-12-25 20:16:01,733 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5041 GetRequests, 5039 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 20:16:01,733 INFO  L413           NwaCegarLoop]: 12339 mSDtfsCounter, 12 mSDsluCounter, 24668 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 37007 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2023-12-25 20:16:01,734 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 37007 Invalid, 18 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-12-25 20:16:01,741 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 7784 states.
[2023-12-25 20:16:01,815 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 7784 to 7776.
[2023-12-25 20:16:01,824 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7776 states, 7775 states have (on average 1.6691961414790997) internal successors, (12978), 7775 states have internal predecessors, (12978), 0 states have call successors, (0), 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 20:16:01,833 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7776 states to 7776 states and 12978 transitions.
[2023-12-25 20:16:01,833 INFO  L78                 Accepts]: Start accepts. Automaton has 7776 states and 12978 transitions. Word has length 5042
[2023-12-25 20:16:01,835 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 20:16:01,835 INFO  L495      AbstractCegarLoop]: Abstraction has 7776 states and 12978 transitions.
[2023-12-25 20:16:01,836 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 1260.5) internal successors, (5042), 4 states have internal predecessors, (5042), 0 states have call successors, (0), 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 20:16:01,836 INFO  L276                IsEmpty]: Start isEmpty. Operand 7776 states and 12978 transitions.
[2023-12-25 20:16:01,968 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5043
[2023-12-25 20:16:01,968 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 20:16:01,971 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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[2023-12-25 20:16:02,032 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 20:16:02,196 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 20:16:02,197 INFO  L420      AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 20:16:02,197 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 20:16:02,198 INFO  L85        PathProgramCache]: Analyzing trace with hash -1731718981, now seen corresponding path program 1 times
[2023-12-25 20:16:02,198 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 20:16:02,198 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1630007634]
[2023-12-25 20:16:02,199 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 20:16:02,199 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 20:16:02,507 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 20:16:02,507 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [397872302]
[2023-12-25 20:16:02,508 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 20:16:02,508 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 20:16:02,508 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 20:16:02,509 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 20:16:02,556 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 20:16:07,371 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 20:16:07,539 INFO  L262         TraceCheckSpWp]: Trace formula consists of 20857 conjuncts, 6 conjunts are in the unsatisfiable core
[2023-12-25 20:16:07,609 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 20:16:07,691 INFO  L134       CoverageAnalysis]: Checked inductivity of 258 backedges. 258 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-25 20:16:07,691 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 20:16:07,691 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 20:16:07,691 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1630007634]
[2023-12-25 20:16:07,692 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 20:16:07,694 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [397872302]
[2023-12-25 20:16:07,694 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [397872302] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 20:16:07,695 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 20:16:07,696 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-12-25 20:16:07,696 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1873262629]
[2023-12-25 20:16:07,696 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 20:16:07,700 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-12-25 20:16:07,700 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 20:16:07,703 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-12-25 20:16:07,703 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-12-25 20:16:07,704 INFO  L87              Difference]: Start difference. First operand 7776 states and 12978 transitions. Second operand  has 4 states, 4 states have (on average 1260.5) internal successors, (5042), 4 states have internal predecessors, (5042), 0 states have call successors, (0), 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 20:16:07,831 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 20:16:07,832 INFO  L93              Difference]: Finished difference Result 14973 states and 24994 transitions.
[2023-12-25 20:16:07,832 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-12-25 20:16:07,833 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 1260.5) internal successors, (5042), 4 states have internal predecessors, (5042), 0 states have call successors, (0), 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 5042
[2023-12-25 20:16:07,834 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 20:16:07,845 INFO  L225             Difference]: With dead ends: 14973
[2023-12-25 20:16:07,845 INFO  L226             Difference]: Without dead ends: 7785
[2023-12-25 20:16:07,852 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5041 GetRequests, 5039 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 20:16:07,853 INFO  L413           NwaCegarLoop]: 12339 mSDtfsCounter, 12 mSDsluCounter, 24668 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 37007 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 20:16:07,853 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 37007 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-12-25 20:16:07,859 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 7785 states.
[2023-12-25 20:16:07,928 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 7785 to 7777.
[2023-12-25 20:16:07,944 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7777 states, 7776 states have (on average 1.6691100823045268) internal successors, (12979), 7776 states have internal predecessors, (12979), 0 states have call successors, (0), 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 20:16:07,953 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7777 states to 7777 states and 12979 transitions.
[2023-12-25 20:16:07,953 INFO  L78                 Accepts]: Start accepts. Automaton has 7777 states and 12979 transitions. Word has length 5042
[2023-12-25 20:16:07,954 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 20:16:07,954 INFO  L495      AbstractCegarLoop]: Abstraction has 7777 states and 12979 transitions.
[2023-12-25 20:16:07,955 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 1260.5) internal successors, (5042), 4 states have internal predecessors, (5042), 0 states have call successors, (0), 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 20:16:07,955 INFO  L276                IsEmpty]: Start isEmpty. Operand 7777 states and 12979 transitions.
[2023-12-25 20:16:08,174 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5043
[2023-12-25 20:16:08,175 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 20:16:08,177 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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[2023-12-25 20:16:08,234 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 20:16:08,392 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 20:16:08,393 INFO  L420      AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 20:16:08,394 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 20:16:08,395 INFO  L85        PathProgramCache]: Analyzing trace with hash 225522825, now seen corresponding path program 1 times
[2023-12-25 20:16:08,395 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 20:16:08,395 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1418980755]
[2023-12-25 20:16:08,396 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 20:16:08,396 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 20:16:08,746 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 20:16:08,746 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [418132059]
[2023-12-25 20:16:08,747 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 20:16:08,747 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 20:16:08,747 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 20:16:08,760 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 20:16:08,761 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 20:16:13,241 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 20:16:13,361 INFO  L262         TraceCheckSpWp]: Trace formula consists of 20858 conjuncts, 6 conjunts are in the unsatisfiable core
[2023-12-25 20:16:13,414 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 20:16:13,763 INFO  L134       CoverageAnalysis]: Checked inductivity of 258 backedges. 258 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-25 20:16:13,764 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 20:16:13,764 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 20:16:13,764 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1418980755]
[2023-12-25 20:16:13,764 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 20:16:13,764 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [418132059]
[2023-12-25 20:16:13,764 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [418132059] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 20:16:13,764 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 20:16:13,765 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-12-25 20:16:13,765 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [4086482]
[2023-12-25 20:16:13,765 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 20:16:13,776 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-12-25 20:16:13,776 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 20:16:13,780 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-12-25 20:16:13,780 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-12-25 20:16:13,781 INFO  L87              Difference]: Start difference. First operand 7777 states and 12979 transitions. Second operand  has 4 states, 4 states have (on average 1260.5) internal successors, (5042), 4 states have internal predecessors, (5042), 0 states have call successors, (0), 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 20:16:13,901 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 20:16:13,901 INFO  L93              Difference]: Finished difference Result 14975 states and 24996 transitions.
[2023-12-25 20:16:13,903 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-12-25 20:16:13,904 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 1260.5) internal successors, (5042), 4 states have internal predecessors, (5042), 0 states have call successors, (0), 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 5042
[2023-12-25 20:16:13,905 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 20:16:13,913 INFO  L225             Difference]: With dead ends: 14975
[2023-12-25 20:16:13,913 INFO  L226             Difference]: Without dead ends: 7786
[2023-12-25 20:16:13,919 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5041 GetRequests, 5039 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 20:16:13,920 INFO  L413           NwaCegarLoop]: 12339 mSDtfsCounter, 12 mSDsluCounter, 24668 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 37007 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 20:16:13,920 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 37007 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-12-25 20:16:13,925 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 7786 states.
[2023-12-25 20:16:13,975 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 7786 to 7778.
[2023-12-25 20:16:13,982 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7778 states, 7777 states have (on average 1.669024045261669) internal successors, (12980), 7777 states have internal predecessors, (12980), 0 states have call successors, (0), 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 20:16:13,988 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7778 states to 7778 states and 12980 transitions.
[2023-12-25 20:16:13,988 INFO  L78                 Accepts]: Start accepts. Automaton has 7778 states and 12980 transitions. Word has length 5042
[2023-12-25 20:16:13,989 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 20:16:13,989 INFO  L495      AbstractCegarLoop]: Abstraction has 7778 states and 12980 transitions.
[2023-12-25 20:16:13,990 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 1260.5) internal successors, (5042), 4 states have internal predecessors, (5042), 0 states have call successors, (0), 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 20:16:13,991 INFO  L276                IsEmpty]: Start isEmpty. Operand 7778 states and 12980 transitions.
[2023-12-25 20:16:14,118 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5043
[2023-12-25 20:16:14,118 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 20:16:14,121 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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[2023-12-25 20:16:14,170 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0
[2023-12-25 20:16:14,344 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 20:16:14,345 INFO  L420      AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 20:16:14,345 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 20:16:14,346 INFO  L85        PathProgramCache]: Analyzing trace with hash 1206937815, now seen corresponding path program 1 times
[2023-12-25 20:16:14,346 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 20:16:14,346 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2104104420]
[2023-12-25 20:16:14,347 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 20:16:14,347 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 20:16:14,776 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 20:16:14,777 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [866312792]
[2023-12-25 20:16:14,778 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 20:16:14,778 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 20:16:14,778 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 20:16:14,780 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 20:16:14,808 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 20:16:19,351 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 20:16:19,471 INFO  L262         TraceCheckSpWp]: Trace formula consists of 20859 conjuncts, 6 conjunts are in the unsatisfiable core
[2023-12-25 20:16:19,523 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 20:16:19,597 INFO  L134       CoverageAnalysis]: Checked inductivity of 258 backedges. 258 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-25 20:16:19,597 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 20:16:19,597 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 20:16:19,597 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2104104420]
[2023-12-25 20:16:19,597 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 20:16:19,597 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [866312792]
[2023-12-25 20:16:19,598 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [866312792] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 20:16:19,598 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 20:16:19,598 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-12-25 20:16:19,598 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1177230233]
[2023-12-25 20:16:19,598 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 20:16:19,602 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-12-25 20:16:19,602 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 20:16:19,605 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-12-25 20:16:19,605 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-12-25 20:16:19,606 INFO  L87              Difference]: Start difference. First operand 7778 states and 12980 transitions. Second operand  has 4 states, 4 states have (on average 1260.5) internal successors, (5042), 4 states have internal predecessors, (5042), 0 states have call successors, (0), 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 20:16:19,851 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 20:16:19,851 INFO  L93              Difference]: Finished difference Result 14977 states and 24998 transitions.
[2023-12-25 20:16:19,852 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-12-25 20:16:19,853 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 1260.5) internal successors, (5042), 4 states have internal predecessors, (5042), 0 states have call successors, (0), 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 5042
[2023-12-25 20:16:19,854 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 20:16:19,864 INFO  L225             Difference]: With dead ends: 14977
[2023-12-25 20:16:19,864 INFO  L226             Difference]: Without dead ends: 7787
[2023-12-25 20:16:19,870 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5041 GetRequests, 5039 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 20:16:19,871 INFO  L413           NwaCegarLoop]: 12339 mSDtfsCounter, 12 mSDsluCounter, 24668 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 37007 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 20:16:19,871 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 37007 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-12-25 20:16:19,876 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 7787 states.
[2023-12-25 20:16:19,926 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 7787 to 7779.
[2023-12-25 20:16:19,933 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7779 states, 7778 states have (on average 1.6689380303419903) internal successors, (12981), 7778 states have internal predecessors, (12981), 0 states have call successors, (0), 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 20:16:19,940 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7779 states to 7779 states and 12981 transitions.
[2023-12-25 20:16:19,940 INFO  L78                 Accepts]: Start accepts. Automaton has 7779 states and 12981 transitions. Word has length 5042
[2023-12-25 20:16:19,941 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 20:16:19,941 INFO  L495      AbstractCegarLoop]: Abstraction has 7779 states and 12981 transitions.
[2023-12-25 20:16:19,942 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 1260.5) internal successors, (5042), 4 states have internal predecessors, (5042), 0 states have call successors, (0), 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 20:16:19,942 INFO  L276                IsEmpty]: Start isEmpty. Operand 7779 states and 12981 transitions.
[2023-12-25 20:16:20,076 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5043
[2023-12-25 20:16:20,077 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 20:16:20,080 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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[2023-12-25 20:16:20,142 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 20:16:20,282 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 20:16:20,283 INFO  L420      AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 20:16:20,284 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 20:16:20,285 INFO  L85        PathProgramCache]: Analyzing trace with hash 1993417253, now seen corresponding path program 1 times
[2023-12-25 20:16:20,285 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 20:16:20,285 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1923921108]
[2023-12-25 20:16:20,285 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 20:16:20,285 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 20:16:20,704 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 20:16:20,704 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [5060304]
[2023-12-25 20:16:20,706 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 20:16:20,706 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 20:16:20,706 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 20:16:20,707 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 20:16:20,734 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 20:16:25,858 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 20:16:25,987 INFO  L262         TraceCheckSpWp]: Trace formula consists of 20860 conjuncts, 6 conjunts are in the unsatisfiable core
[2023-12-25 20:16:26,038 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 20:16:26,134 INFO  L134       CoverageAnalysis]: Checked inductivity of 258 backedges. 258 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-25 20:16:26,134 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 20:16:26,134 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 20:16:26,134 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1923921108]
[2023-12-25 20:16:26,134 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 20:16:26,134 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [5060304]
[2023-12-25 20:16:26,134 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [5060304] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 20:16:26,134 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 20:16:26,135 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-12-25 20:16:26,135 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1116133830]
[2023-12-25 20:16:26,135 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 20:16:26,139 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-12-25 20:16:26,139 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 20:16:26,142 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-12-25 20:16:26,142 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-12-25 20:16:26,143 INFO  L87              Difference]: Start difference. First operand 7779 states and 12981 transitions. Second operand  has 4 states, 4 states have (on average 1260.5) internal successors, (5042), 4 states have internal predecessors, (5042), 0 states have call successors, (0), 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 20:16:26,267 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 20:16:26,267 INFO  L93              Difference]: Finished difference Result 14979 states and 25000 transitions.
[2023-12-25 20:16:26,267 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-12-25 20:16:26,269 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 1260.5) internal successors, (5042), 4 states have internal predecessors, (5042), 0 states have call successors, (0), 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 5042
[2023-12-25 20:16:26,269 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 20:16:26,277 INFO  L225             Difference]: With dead ends: 14979
[2023-12-25 20:16:26,278 INFO  L226             Difference]: Without dead ends: 7788
[2023-12-25 20:16:26,285 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5041 GetRequests, 5039 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 20:16:26,286 INFO  L413           NwaCegarLoop]: 12339 mSDtfsCounter, 12 mSDsluCounter, 24668 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 37007 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 20:16:26,287 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 37007 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-12-25 20:16:26,293 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 7788 states.
[2023-12-25 20:16:26,351 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 7788 to 7780.
[2023-12-25 20:16:26,357 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7780 states, 7779 states have (on average 1.6688520375369584) internal successors, (12982), 7779 states have internal predecessors, (12982), 0 states have call successors, (0), 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 20:16:26,364 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7780 states to 7780 states and 12982 transitions.
[2023-12-25 20:16:26,364 INFO  L78                 Accepts]: Start accepts. Automaton has 7780 states and 12982 transitions. Word has length 5042
[2023-12-25 20:16:26,365 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 20:16:26,365 INFO  L495      AbstractCegarLoop]: Abstraction has 7780 states and 12982 transitions.
[2023-12-25 20:16:26,366 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 1260.5) internal successors, (5042), 4 states have internal predecessors, (5042), 0 states have call successors, (0), 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 20:16:26,366 INFO  L276                IsEmpty]: Start isEmpty. Operand 7780 states and 12982 transitions.
[2023-12-25 20:16:26,598 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5043
[2023-12-25 20:16:26,598 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 20:16:26,600 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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[2023-12-25 20:16:26,653 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 20:16:26,808 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 20:16:26,808 INFO  L420      AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 20:16:26,809 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 20:16:26,810 INFO  L85        PathProgramCache]: Analyzing trace with hash 1081851287, now seen corresponding path program 1 times
[2023-12-25 20:16:26,810 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 20:16:26,810 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1006044326]
[2023-12-25 20:16:26,811 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 20:16:26,811 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 20:16:27,089 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 20:16:27,090 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [863712526]
[2023-12-25 20:16:27,090 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 20:16:27,091 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 20:16:27,091 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 20:16:27,092 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 20:16:27,134 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 20:16:31,650 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 20:16:31,789 INFO  L262         TraceCheckSpWp]: Trace formula consists of 20861 conjuncts, 6 conjunts are in the unsatisfiable core
[2023-12-25 20:16:31,840 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 20:16:31,908 INFO  L134       CoverageAnalysis]: Checked inductivity of 258 backedges. 258 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-25 20:16:31,909 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 20:16:31,909 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 20:16:31,909 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1006044326]
[2023-12-25 20:16:31,909 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 20:16:31,909 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [863712526]
[2023-12-25 20:16:31,909 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [863712526] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 20:16:31,909 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 20:16:31,909 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-12-25 20:16:31,910 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1576717470]
[2023-12-25 20:16:31,910 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 20:16:31,913 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-12-25 20:16:31,913 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 20:16:31,916 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-12-25 20:16:31,916 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-12-25 20:16:31,917 INFO  L87              Difference]: Start difference. First operand 7780 states and 12982 transitions. Second operand  has 4 states, 4 states have (on average 1260.5) internal successors, (5042), 4 states have internal predecessors, (5042), 0 states have call successors, (0), 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 20:16:32,218 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 20:16:32,219 INFO  L93              Difference]: Finished difference Result 14981 states and 25002 transitions.
[2023-12-25 20:16:32,224 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-12-25 20:16:32,225 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 1260.5) internal successors, (5042), 4 states have internal predecessors, (5042), 0 states have call successors, (0), 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 5042
[2023-12-25 20:16:32,226 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 20:16:32,231 INFO  L225             Difference]: With dead ends: 14981
[2023-12-25 20:16:32,231 INFO  L226             Difference]: Without dead ends: 7789
[2023-12-25 20:16:32,243 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5041 GetRequests, 5039 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 20:16:32,244 INFO  L413           NwaCegarLoop]: 12339 mSDtfsCounter, 12 mSDsluCounter, 24668 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 37007 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 20:16:32,244 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 37007 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-12-25 20:16:32,251 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 7789 states.
[2023-12-25 20:16:32,294 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 7789 to 7781.
[2023-12-25 20:16:32,301 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7781 states, 7780 states have (on average 1.6687660668380462) internal successors, (12983), 7780 states have internal predecessors, (12983), 0 states have call successors, (0), 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 20:16:32,311 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7781 states to 7781 states and 12983 transitions.
[2023-12-25 20:16:32,311 INFO  L78                 Accepts]: Start accepts. Automaton has 7781 states and 12983 transitions. Word has length 5042
[2023-12-25 20:16:32,312 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 20:16:32,312 INFO  L495      AbstractCegarLoop]: Abstraction has 7781 states and 12983 transitions.
[2023-12-25 20:16:32,313 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 1260.5) internal successors, (5042), 4 states have internal predecessors, (5042), 0 states have call successors, (0), 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 20:16:32,313 INFO  L276                IsEmpty]: Start isEmpty. Operand 7781 states and 12983 transitions.
[2023-12-25 20:16:32,444 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5043
[2023-12-25 20:16:32,444 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 20:16:32,446 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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[2023-12-25 20:16:32,499 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 20:16:32,672 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 20:16:32,672 INFO  L420      AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 20:16:32,673 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 20:16:32,674 INFO  L85        PathProgramCache]: Analyzing trace with hash -1473350647, now seen corresponding path program 1 times
[2023-12-25 20:16:32,674 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 20:16:32,674 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1604604050]
[2023-12-25 20:16:32,674 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 20:16:32,674 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 20:16:32,959 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 20:16:32,959 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1303005990]
[2023-12-25 20:16:32,960 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 20:16:32,960 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 20:16:32,960 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 20:16:32,961 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 20:16:32,964 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 20:16:37,687 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 20:16:37,813 INFO  L262         TraceCheckSpWp]: Trace formula consists of 20862 conjuncts, 6 conjunts are in the unsatisfiable core
[2023-12-25 20:16:37,866 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 20:16:37,932 INFO  L134       CoverageAnalysis]: Checked inductivity of 258 backedges. 258 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-25 20:16:37,932 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 20:16:37,932 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 20:16:37,933 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1604604050]
[2023-12-25 20:16:37,933 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 20:16:37,933 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1303005990]
[2023-12-25 20:16:37,933 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1303005990] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 20:16:37,933 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 20:16:37,933 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-12-25 20:16:37,933 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [176444392]
[2023-12-25 20:16:37,933 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 20:16:37,937 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-12-25 20:16:37,937 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 20:16:37,940 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-12-25 20:16:37,940 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-12-25 20:16:37,940 INFO  L87              Difference]: Start difference. First operand 7781 states and 12983 transitions. Second operand  has 4 states, 4 states have (on average 1260.5) internal successors, (5042), 4 states have internal predecessors, (5042), 0 states have call successors, (0), 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 20:16:38,064 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 20:16:38,064 INFO  L93              Difference]: Finished difference Result 14983 states and 25004 transitions.
[2023-12-25 20:16:38,064 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-12-25 20:16:38,066 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 1260.5) internal successors, (5042), 4 states have internal predecessors, (5042), 0 states have call successors, (0), 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 5042
[2023-12-25 20:16:38,067 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 20:16:38,073 INFO  L225             Difference]: With dead ends: 14983
[2023-12-25 20:16:38,073 INFO  L226             Difference]: Without dead ends: 7790
[2023-12-25 20:16:38,078 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5041 GetRequests, 5039 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 20:16:38,078 INFO  L413           NwaCegarLoop]: 12339 mSDtfsCounter, 12 mSDsluCounter, 24668 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 37007 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 20:16:38,078 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 37007 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-12-25 20:16:38,083 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 7790 states.
[2023-12-25 20:16:38,130 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 7790 to 7782.
[2023-12-25 20:16:38,135 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7782 states, 7781 states have (on average 1.6686801182367306) internal successors, (12984), 7781 states have internal predecessors, (12984), 0 states have call successors, (0), 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 20:16:38,141 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7782 states to 7782 states and 12984 transitions.
[2023-12-25 20:16:38,142 INFO  L78                 Accepts]: Start accepts. Automaton has 7782 states and 12984 transitions. Word has length 5042
[2023-12-25 20:16:38,143 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 20:16:38,143 INFO  L495      AbstractCegarLoop]: Abstraction has 7782 states and 12984 transitions.
[2023-12-25 20:16:38,144 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 1260.5) internal successors, (5042), 4 states have internal predecessors, (5042), 0 states have call successors, (0), 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 20:16:38,144 INFO  L276                IsEmpty]: Start isEmpty. Operand 7782 states and 12984 transitions.
[2023-12-25 20:16:38,361 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5043
[2023-12-25 20:16:38,361 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 20:16:38,363 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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[2023-12-25 20:16:38,417 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 20:16:38,580 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 20:16:38,581 INFO  L420      AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 20:16:38,581 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 20:16:38,582 INFO  L85        PathProgramCache]: Analyzing trace with hash 1190052219, now seen corresponding path program 1 times
[2023-12-25 20:16:38,582 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 20:16:38,582 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [319038627]
[2023-12-25 20:16:38,583 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 20:16:38,583 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 20:16:38,850 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 20:16:38,850 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [175371649]
[2023-12-25 20:16:38,851 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 20:16:38,851 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 20:16:38,851 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 20:16:38,865 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 20:16:38,882 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 20:16:43,351 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 20:16:43,481 INFO  L262         TraceCheckSpWp]: Trace formula consists of 20863 conjuncts, 6 conjunts are in the unsatisfiable core
[2023-12-25 20:16:43,533 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 20:16:43,628 INFO  L134       CoverageAnalysis]: Checked inductivity of 258 backedges. 258 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-25 20:16:43,629 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 20:16:43,629 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 20:16:43,629 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [319038627]
[2023-12-25 20:16:43,629 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 20:16:43,629 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [175371649]
[2023-12-25 20:16:43,629 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [175371649] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 20:16:43,629 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 20:16:43,629 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-12-25 20:16:43,630 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [237005333]
[2023-12-25 20:16:43,630 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 20:16:43,634 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-12-25 20:16:43,634 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 20:16:43,637 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-12-25 20:16:43,637 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-12-25 20:16:43,637 INFO  L87              Difference]: Start difference. First operand 7782 states and 12984 transitions. Second operand  has 4 states, 4 states have (on average 1260.5) internal successors, (5042), 4 states have internal predecessors, (5042), 0 states have call successors, (0), 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 20:16:43,764 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 20:16:43,764 INFO  L93              Difference]: Finished difference Result 14985 states and 25006 transitions.
[2023-12-25 20:16:43,765 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-12-25 20:16:43,766 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 1260.5) internal successors, (5042), 4 states have internal predecessors, (5042), 0 states have call successors, (0), 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 5042
[2023-12-25 20:16:43,767 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 20:16:43,773 INFO  L225             Difference]: With dead ends: 14985
[2023-12-25 20:16:43,773 INFO  L226             Difference]: Without dead ends: 7791
[2023-12-25 20:16:43,779 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5041 GetRequests, 5039 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 20:16:43,779 INFO  L413           NwaCegarLoop]: 12339 mSDtfsCounter, 12 mSDsluCounter, 24668 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 37007 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 20:16:43,780 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 37007 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-12-25 20:16:43,785 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 7791 states.
[2023-12-25 20:16:43,834 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 7791 to 7783.
[2023-12-25 20:16:43,840 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7783 states, 7782 states have (on average 1.6685941917244924) internal successors, (12985), 7782 states have internal predecessors, (12985), 0 states have call successors, (0), 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 20:16:44,022 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7783 states to 7783 states and 12985 transitions.
[2023-12-25 20:16:44,023 INFO  L78                 Accepts]: Start accepts. Automaton has 7783 states and 12985 transitions. Word has length 5042
[2023-12-25 20:16:44,024 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 20:16:44,024 INFO  L495      AbstractCegarLoop]: Abstraction has 7783 states and 12985 transitions.
[2023-12-25 20:16:44,025 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 1260.5) internal successors, (5042), 4 states have internal predecessors, (5042), 0 states have call successors, (0), 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 20:16:44,025 INFO  L276                IsEmpty]: Start isEmpty. Operand 7783 states and 12985 transitions.
[2023-12-25 20:16:44,148 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5043
[2023-12-25 20:16:44,148 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 20:16:44,150 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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[2023-12-25 20:16:44,199 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 20:16:44,366 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 20:16:44,367 INFO  L420      AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 20:16:44,367 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 20:16:44,369 INFO  L85        PathProgramCache]: Analyzing trace with hash -1053677075, now seen corresponding path program 1 times
[2023-12-25 20:16:44,369 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 20:16:44,369 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1581979556]
[2023-12-25 20:16:44,369 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 20:16:44,369 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 20:16:44,638 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 20:16:44,638 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [938449201]
[2023-12-25 20:16:44,639 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 20:16:44,639 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 20:16:44,640 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 20:16:44,640 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 20:16:44,657 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 20:16:49,322 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 20:16:49,437 INFO  L262         TraceCheckSpWp]: Trace formula consists of 20864 conjuncts, 6 conjunts are in the unsatisfiable core
[2023-12-25 20:16:49,485 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 20:16:49,546 INFO  L134       CoverageAnalysis]: Checked inductivity of 258 backedges. 258 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-25 20:16:49,546 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 20:16:49,547 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 20:16:49,547 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1581979556]
[2023-12-25 20:16:49,547 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 20:16:49,547 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [938449201]
[2023-12-25 20:16:49,547 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [938449201] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 20:16:49,547 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 20:16:49,547 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-12-25 20:16:49,547 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [539452892]
[2023-12-25 20:16:49,547 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 20:16:49,551 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-12-25 20:16:49,551 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 20:16:49,553 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-12-25 20:16:49,554 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-12-25 20:16:49,554 INFO  L87              Difference]: Start difference. First operand 7783 states and 12985 transitions. Second operand  has 4 states, 4 states have (on average 1260.5) internal successors, (5042), 4 states have internal predecessors, (5042), 0 states have call successors, (0), 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 20:16:49,673 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 20:16:49,673 INFO  L93              Difference]: Finished difference Result 14987 states and 25008 transitions.
[2023-12-25 20:16:49,673 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-12-25 20:16:49,675 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 1260.5) internal successors, (5042), 4 states have internal predecessors, (5042), 0 states have call successors, (0), 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 5042
[2023-12-25 20:16:49,676 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 20:16:49,681 INFO  L225             Difference]: With dead ends: 14987
[2023-12-25 20:16:49,681 INFO  L226             Difference]: Without dead ends: 7792
[2023-12-25 20:16:49,686 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5041 GetRequests, 5039 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 20:16:49,687 INFO  L413           NwaCegarLoop]: 12339 mSDtfsCounter, 12 mSDsluCounter, 24668 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 37007 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 20:16:49,687 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 37007 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-12-25 20:16:49,708 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 7792 states.
[2023-12-25 20:16:49,784 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 7792 to 7784.
[2023-12-25 20:16:49,790 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7784 states, 7783 states have (on average 1.6685082872928176) internal successors, (12986), 7783 states have internal predecessors, (12986), 0 states have call successors, (0), 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 20:16:49,813 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7784 states to 7784 states and 12986 transitions.
[2023-12-25 20:16:49,814 INFO  L78                 Accepts]: Start accepts. Automaton has 7784 states and 12986 transitions. Word has length 5042
[2023-12-25 20:16:49,815 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 20:16:49,815 INFO  L495      AbstractCegarLoop]: Abstraction has 7784 states and 12986 transitions.
[2023-12-25 20:16:49,816 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 1260.5) internal successors, (5042), 4 states have internal predecessors, (5042), 0 states have call successors, (0), 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 20:16:49,816 INFO  L276                IsEmpty]: Start isEmpty. Operand 7784 states and 12986 transitions.
[2023-12-25 20:16:50,027 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5043
[2023-12-25 20:16:50,028 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 20:16:50,044 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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[2023-12-25 20:16:50,106 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0
[2023-12-25 20:16:50,264 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 20:16:50,265 INFO  L420      AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 20:16:50,265 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 20:16:50,266 INFO  L85        PathProgramCache]: Analyzing trace with hash 1613073503, now seen corresponding path program 1 times
[2023-12-25 20:16:50,266 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 20:16:50,266 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [21259898]
[2023-12-25 20:16:50,267 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 20:16:50,267 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 20:16:50,533 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 20:16:50,533 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [281295490]
[2023-12-25 20:16:50,534 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 20:16:50,534 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 20:16:50,534 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 20:16:50,535 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 20:16:50,547 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 20:16:55,135 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 20:16:55,270 INFO  L262         TraceCheckSpWp]: Trace formula consists of 20865 conjuncts, 7 conjunts are in the unsatisfiable core
[2023-12-25 20:16:55,334 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 20:17:09,426 INFO  L134       CoverageAnalysis]: Checked inductivity of 258 backedges. 258 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-25 20:17:09,426 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 20:17:09,426 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 20:17:09,426 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [21259898]
[2023-12-25 20:17:09,426 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 20:17:09,426 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [281295490]
[2023-12-25 20:17:09,426 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [281295490] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 20:17:09,426 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 20:17:09,427 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2023-12-25 20:17:09,427 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [181999619]
[2023-12-25 20:17:09,427 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 20:17:09,430 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-12-25 20:17:09,430 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 20:17:09,433 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-12-25 20:17:09,433 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2023-12-25 20:17:09,434 INFO  L87              Difference]: Start difference. First operand 7784 states and 12986 transitions. Second operand  has 5 states, 5 states have (on average 1008.4) internal successors, (5042), 5 states have internal predecessors, (5042), 0 states have call successors, (0), 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 20:17:15,020 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 20:17:15,020 INFO  L93              Difference]: Finished difference Result 21798 states and 36376 transitions.
[2023-12-25 20:17:15,021 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2023-12-25 20:17:15,022 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 1008.4) internal successors, (5042), 5 states have internal predecessors, (5042), 0 states have call successors, (0), 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 5042
[2023-12-25 20:17:15,025 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 20:17:15,039 INFO  L225             Difference]: With dead ends: 21798
[2023-12-25 20:17:15,039 INFO  L226             Difference]: Without dead ends: 14602
[2023-12-25 20:17:15,048 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5043 GetRequests, 5038 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42
[2023-12-25 20:17:15,048 INFO  L413           NwaCegarLoop]: 10525 mSDtfsCounter, 6990 mSDsluCounter, 30159 mSDsCounter, 0 mSdLazyCounter, 8700 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6990 SdHoareTripleChecker+Valid, 40684 SdHoareTripleChecker+Invalid, 8700 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8700 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.3s IncrementalHoareTripleChecker+Time
[2023-12-25 20:17:15,050 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [6990 Valid, 40684 Invalid, 8700 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 8700 Invalid, 0 Unknown, 0 Unchecked, 5.3s Time]
[2023-12-25 20:17:15,063 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14602 states.
[2023-12-25 20:17:15,193 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14602 to 14592.
[2023-12-25 20:17:15,207 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 14592 states, 14591 states have (on average 1.6689054896854225) internal successors, (24351), 14591 states have internal predecessors, (24351), 0 states have call successors, (0), 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 20:17:15,222 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 14592 states to 14592 states and 24351 transitions.
[2023-12-25 20:17:15,222 INFO  L78                 Accepts]: Start accepts. Automaton has 14592 states and 24351 transitions. Word has length 5042
[2023-12-25 20:17:15,225 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 20:17:15,225 INFO  L495      AbstractCegarLoop]: Abstraction has 14592 states and 24351 transitions.
[2023-12-25 20:17:15,227 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 1008.4) internal successors, (5042), 5 states have internal predecessors, (5042), 0 states have call successors, (0), 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 20:17:15,227 INFO  L276                IsEmpty]: Start isEmpty. Operand 14592 states and 24351 transitions.
[2023-12-25 20:17:15,435 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5044
[2023-12-25 20:17:15,435 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 20:17:15,437 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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[2023-12-25 20:17:15,488 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0
[2023-12-25 20:17:15,643 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 20:17:15,643 INFO  L420      AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 20:17:15,644 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 20:17:15,646 INFO  L85        PathProgramCache]: Analyzing trace with hash -440955905, now seen corresponding path program 1 times
[2023-12-25 20:17:15,646 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 20:17:15,646 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1415342908]
[2023-12-25 20:17:15,646 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 20:17:15,647 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 20:17:15,948 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 20:17:15,948 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1076877759]
[2023-12-25 20:17:15,949 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 20:17:15,949 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 20:17:15,949 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 20:17:15,950 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 20:17:15,991 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 20:17:20,580 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 20:17:20,704 INFO  L262         TraceCheckSpWp]: Trace formula consists of 20868 conjuncts, 21 conjunts are in the unsatisfiable core
[2023-12-25 20:17:20,761 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 20:17:20,983 INFO  L134       CoverageAnalysis]: Checked inductivity of 258 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 252 trivial. 0 not checked.
[2023-12-25 20:17:20,983 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-12-25 20:17:21,203 INFO  L134       CoverageAnalysis]: Checked inductivity of 258 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 252 trivial. 0 not checked.
[2023-12-25 20:17:21,203 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 20:17:21,204 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1415342908]
[2023-12-25 20:17:21,204 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 20:17:21,204 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1076877759]
[2023-12-25 20:17:21,204 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1076877759] provided 1 perfect and 1 imperfect interpolant sequences
[2023-12-25 20:17:21,204 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2023-12-25 20:17:21,205 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 12
[2023-12-25 20:17:21,205 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [143938291]
[2023-12-25 20:17:21,205 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 20:17:21,208 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-12-25 20:17:21,208 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 20:17:21,211 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-12-25 20:17:21,211 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132
[2023-12-25 20:17:21,211 INFO  L87              Difference]: Start difference. First operand 14592 states and 24351 transitions. Second operand  has 5 states, 5 states have (on average 958.4) internal successors, (4792), 5 states have internal predecessors, (4792), 0 states have call successors, (0), 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 20:17:21,608 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 20:17:21,608 INFO  L93              Difference]: Finished difference Result 36163 states and 60353 transitions.
[2023-12-25 20:17:21,609 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2023-12-25 20:17:21,611 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 958.4) internal successors, (4792), 5 states have internal predecessors, (4792), 0 states have call successors, (0), 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 5043
[2023-12-25 20:17:21,614 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 20:17:21,643 INFO  L225             Difference]: With dead ends: 36163
[2023-12-25 20:17:21,643 INFO  L226             Difference]: Without dead ends: 22159
[2023-12-25 20:17:21,662 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 10084 GetRequests, 10074 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132
[2023-12-25 20:17:21,662 INFO  L413           NwaCegarLoop]: 36308 mSDtfsCounter, 23967 mSDsluCounter, 84930 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23967 SdHoareTripleChecker+Valid, 121238 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2023-12-25 20:17:21,662 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [23967 Valid, 121238 Invalid, 38 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-12-25 20:17:21,683 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 22159 states.
[2023-12-25 20:17:21,854 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 22159 to 14586.
[2023-12-25 20:17:21,865 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 14586 states, 14585 states have (on average 1.6688378471031882) internal successors, (24340), 14585 states have internal predecessors, (24340), 0 states have call successors, (0), 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 20:17:21,879 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 14586 states to 14586 states and 24340 transitions.
[2023-12-25 20:17:21,879 INFO  L78                 Accepts]: Start accepts. Automaton has 14586 states and 24340 transitions. Word has length 5043
[2023-12-25 20:17:21,882 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 20:17:21,882 INFO  L495      AbstractCegarLoop]: Abstraction has 14586 states and 24340 transitions.
[2023-12-25 20:17:21,883 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 958.4) internal successors, (4792), 5 states have internal predecessors, (4792), 0 states have call successors, (0), 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 20:17:21,883 INFO  L276                IsEmpty]: Start isEmpty. Operand 14586 states and 24340 transitions.
[2023-12-25 20:17:22,007 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5045
[2023-12-25 20:17:22,007 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 20:17:22,009 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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[2023-12-25 20:17:22,063 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0
[2023-12-25 20:17:22,232 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 20:17:22,233 INFO  L420      AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 20:17:22,233 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 20:17:22,234 INFO  L85        PathProgramCache]: Analyzing trace with hash 815177969, now seen corresponding path program 1 times
[2023-12-25 20:17:22,234 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 20:17:22,234 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1442721867]
[2023-12-25 20:17:22,235 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 20:17:22,235 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 20:17:22,534 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 20:17:22,535 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [225823391]
[2023-12-25 20:17:22,536 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 20:17:22,536 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 20:17:22,536 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 20:17:22,554 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 20:17:22,584 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 20:17:27,909 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 20:17:28,053 INFO  L262         TraceCheckSpWp]: Trace formula consists of 20871 conjuncts, 10 conjunts are in the unsatisfiable core
[2023-12-25 20:17:28,113 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 20:17:28,190 INFO  L134       CoverageAnalysis]: Checked inductivity of 259 backedges. 259 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-25 20:17:28,191 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 20:17:28,191 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 20:17:28,191 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1442721867]
[2023-12-25 20:17:28,191 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 20:17:28,191 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [225823391]
[2023-12-25 20:17:28,191 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [225823391] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 20:17:28,191 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 20:17:28,192 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2023-12-25 20:17:28,192 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [241059790]
[2023-12-25 20:17:28,192 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 20:17:28,196 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2023-12-25 20:17:28,196 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 20:17:28,200 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2023-12-25 20:17:28,200 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30
[2023-12-25 20:17:28,200 INFO  L87              Difference]: Start difference. First operand 14586 states and 24340 transitions. Second operand  has 6 states, 6 states have (on average 840.6666666666666) internal successors, (5044), 6 states have internal predecessors, (5044), 0 states have call successors, (0), 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 20:17:28,575 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 20:17:28,576 INFO  L93              Difference]: Finished difference Result 42580 states and 71058 transitions.
[2023-12-25 20:17:28,576 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. 
[2023-12-25 20:17:28,578 INFO  L78                 Accepts]: Start accepts. Automaton has  has 6 states, 6 states have (on average 840.6666666666666) internal successors, (5044), 6 states have internal predecessors, (5044), 0 states have call successors, (0), 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 5044
[2023-12-25 20:17:28,578 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 20:17:28,613 INFO  L225             Difference]: With dead ends: 42580
[2023-12-25 20:17:28,613 INFO  L226             Difference]: Without dead ends: 28582
[2023-12-25 20:17:28,636 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5046 GetRequests, 5040 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56
[2023-12-25 20:17:28,637 INFO  L413           NwaCegarLoop]: 13170 mSDtfsCounter, 11988 mSDsluCounter, 51815 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11988 SdHoareTripleChecker+Valid, 64985 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-12-25 20:17:28,637 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [11988 Valid, 64985 Invalid, 64 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-12-25 20:17:28,663 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 28582 states.
[2023-12-25 20:17:28,906 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 28582 to 14596.
[2023-12-25 20:17:28,921 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 14596 states, 14595 states have (on average 1.668379582048647) internal successors, (24350), 14595 states have internal predecessors, (24350), 0 states have call successors, (0), 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 20:17:28,940 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 14596 states to 14596 states and 24350 transitions.
[2023-12-25 20:17:28,940 INFO  L78                 Accepts]: Start accepts. Automaton has 14596 states and 24350 transitions. Word has length 5044
[2023-12-25 20:17:28,940 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 20:17:28,940 INFO  L495      AbstractCegarLoop]: Abstraction has 14596 states and 24350 transitions.
[2023-12-25 20:17:28,942 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 6 states, 6 states have (on average 840.6666666666666) internal successors, (5044), 6 states have internal predecessors, (5044), 0 states have call successors, (0), 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 20:17:28,942 INFO  L276                IsEmpty]: Start isEmpty. Operand 14596 states and 24350 transitions.
[2023-12-25 20:17:29,187 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5045
[2023-12-25 20:17:29,188 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 20:17:29,189 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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[2023-12-25 20:17:29,251 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 20:17:29,404 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 20:17:29,405 INFO  L420      AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 20:17:29,405 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 20:17:29,406 INFO  L85        PathProgramCache]: Analyzing trace with hash 2084153523, now seen corresponding path program 1 times
[2023-12-25 20:17:29,406 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 20:17:29,406 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [196269638]
[2023-12-25 20:17:29,406 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 20:17:29,406 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 20:17:29,694 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 20:17:29,694 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1502665501]
[2023-12-25 20:17:29,695 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 20:17:29,696 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 20:17:29,696 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 20:17:29,697 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 20:17:29,699 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 20:17:34,482 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 20:17:34,623 INFO  L262         TraceCheckSpWp]: Trace formula consists of 20871 conjuncts, 10 conjunts are in the unsatisfiable core
[2023-12-25 20:17:34,676 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 20:17:34,739 INFO  L134       CoverageAnalysis]: Checked inductivity of 259 backedges. 259 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-25 20:17:34,739 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 20:17:34,739 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 20:17:34,739 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [196269638]
[2023-12-25 20:17:34,739 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 20:17:34,739 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1502665501]
[2023-12-25 20:17:34,739 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1502665501] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 20:17:34,740 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 20:17:34,740 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2023-12-25 20:17:34,740 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [81508068]
[2023-12-25 20:17:34,740 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 20:17:34,743 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2023-12-25 20:17:34,743 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 20:17:34,749 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2023-12-25 20:17:34,749 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30
[2023-12-25 20:17:34,750 INFO  L87              Difference]: Start difference. First operand 14596 states and 24350 transitions. Second operand  has 6 states, 6 states have (on average 840.6666666666666) internal successors, (5044), 6 states have internal predecessors, (5044), 0 states have call successors, (0), 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 20:17:35,079 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 20:17:35,079 INFO  L93              Difference]: Finished difference Result 42608 states and 71086 transitions.
[2023-12-25 20:17:35,080 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. 
[2023-12-25 20:17:35,081 INFO  L78                 Accepts]: Start accepts. Automaton has  has 6 states, 6 states have (on average 840.6666666666666) internal successors, (5044), 6 states have internal predecessors, (5044), 0 states have call successors, (0), 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 5044
[2023-12-25 20:17:35,082 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 20:17:35,111 INFO  L225             Difference]: With dead ends: 42608
[2023-12-25 20:17:35,112 INFO  L226             Difference]: Without dead ends: 28600
[2023-12-25 20:17:35,128 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5046 GetRequests, 5040 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56
[2023-12-25 20:17:35,129 INFO  L413           NwaCegarLoop]: 13209 mSDtfsCounter, 11988 mSDsluCounter, 51932 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11988 SdHoareTripleChecker+Valid, 65141 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-12-25 20:17:35,129 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [11988 Valid, 65141 Invalid, 64 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-12-25 20:17:35,150 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 28600 states.
[2023-12-25 20:17:35,488 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 28600 to 14606.
[2023-12-25 20:17:35,499 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 14606 states, 14605 states have (on average 1.6679219445395412) internal successors, (24360), 14605 states have internal predecessors, (24360), 0 states have call successors, (0), 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 20:17:35,513 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 14606 states to 14606 states and 24360 transitions.
[2023-12-25 20:17:35,513 INFO  L78                 Accepts]: Start accepts. Automaton has 14606 states and 24360 transitions. Word has length 5044
[2023-12-25 20:17:35,514 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 20:17:35,514 INFO  L495      AbstractCegarLoop]: Abstraction has 14606 states and 24360 transitions.
[2023-12-25 20:17:35,515 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 6 states, 6 states have (on average 840.6666666666666) internal successors, (5044), 6 states have internal predecessors, (5044), 0 states have call successors, (0), 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 20:17:35,515 INFO  L276                IsEmpty]: Start isEmpty. Operand 14606 states and 24360 transitions.
[2023-12-25 20:17:35,663 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5045
[2023-12-25 20:17:35,663 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 20:17:35,664 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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[2023-12-25 20:17:35,727 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0
[2023-12-25 20:17:35,892 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 20:17:35,892 INFO  L420      AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 20:17:35,893 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 20:17:35,893 INFO  L85        PathProgramCache]: Analyzing trace with hash -2006400139, now seen corresponding path program 1 times
[2023-12-25 20:17:35,893 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 20:17:35,894 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1962308206]
[2023-12-25 20:17:35,894 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 20:17:35,894 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 20:17:36,196 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 20:17:36,196 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [228607410]
[2023-12-25 20:17:36,197 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 20:17:36,197 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 20:17:36,197 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 20:17:36,198 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 20:17:36,204 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 20:17:41,214 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 20:17:41,346 INFO  L262         TraceCheckSpWp]: Trace formula consists of 20871 conjuncts, 51 conjunts are in the unsatisfiable core
[2023-12-25 20:17:41,402 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 20:17:53,928 INFO  L134       CoverageAnalysis]: Checked inductivity of 259 backedges. 259 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-25 20:17:53,928 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 20:17:53,928 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 20:17:53,928 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1962308206]
[2023-12-25 20:17:53,928 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 20:17:53,929 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [228607410]
[2023-12-25 20:17:53,929 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [228607410] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 20:17:53,929 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 20:17:53,930 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17
[2023-12-25 20:17:53,930 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [658453762]
[2023-12-25 20:17:53,930 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 20:17:53,933 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 18 states
[2023-12-25 20:17:53,933 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 20:17:53,935 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants.
[2023-12-25 20:17:53,935 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=233, Unknown=0, NotChecked=0, Total=306
[2023-12-25 20:17:53,936 INFO  L87              Difference]: Start difference. First operand 14606 states and 24360 transitions. Second operand  has 18 states, 18 states have (on average 280.22222222222223) internal successors, (5044), 17 states have internal predecessors, (5044), 0 states have call successors, (0), 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 20:18:16,272 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 20:18:16,273 INFO  L93              Difference]: Finished difference Result 56117 states and 93572 transitions.
[2023-12-25 20:18:16,273 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. 
[2023-12-25 20:18:16,274 INFO  L78                 Accepts]: Start accepts. Automaton has  has 18 states, 18 states have (on average 280.22222222222223) internal successors, (5044), 17 states have internal predecessors, (5044), 0 states have call successors, (0), 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 5044
[2023-12-25 20:18:16,275 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 20:18:16,311 INFO  L225             Difference]: With dead ends: 56117
[2023-12-25 20:18:16,312 INFO  L226             Difference]: Without dead ends: 42099
[2023-12-25 20:18:16,328 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5065 GetRequests, 5027 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 309 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=335, Invalid=1225, Unknown=0, NotChecked=0, Total=1560
[2023-12-25 20:18:16,328 INFO  L413           NwaCegarLoop]: 9680 mSDtfsCounter, 168520 mSDsluCounter, 121135 mSDsCounter, 0 mSdLazyCounter, 41585 mSolverCounterSat, 590 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 168520 SdHoareTripleChecker+Valid, 130815 SdHoareTripleChecker+Invalid, 42175 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.3s SdHoareTripleChecker+Time, 590 IncrementalHoareTripleChecker+Valid, 41585 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 20.4s IncrementalHoareTripleChecker+Time
[2023-12-25 20:18:16,328 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [168520 Valid, 130815 Invalid, 42175 Unknown, 0 Unchecked, 0.3s Time], IncrementalHoareTripleChecker [590 Valid, 41585 Invalid, 0 Unknown, 0 Unchecked, 20.4s Time]
[2023-12-25 20:18:16,350 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 42099 states.
[2023-12-25 20:18:16,528 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 42099 to 17897.
[2023-12-25 20:18:16,542 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 17897 states, 17896 states have (on average 1.6562919088064372) internal successors, (29641), 17896 states have internal predecessors, (29641), 0 states have call successors, (0), 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 20:18:16,559 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 17897 states to 17897 states and 29641 transitions.
[2023-12-25 20:18:16,560 INFO  L78                 Accepts]: Start accepts. Automaton has 17897 states and 29641 transitions. Word has length 5044
[2023-12-25 20:18:16,561 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 20:18:16,561 INFO  L495      AbstractCegarLoop]: Abstraction has 17897 states and 29641 transitions.
[2023-12-25 20:18:16,562 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 18 states, 18 states have (on average 280.22222222222223) internal successors, (5044), 17 states have internal predecessors, (5044), 0 states have call successors, (0), 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 20:18:16,562 INFO  L276                IsEmpty]: Start isEmpty. Operand 17897 states and 29641 transitions.
[2023-12-25 20:18:16,686 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5046
[2023-12-25 20:18:16,687 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 20:18:16,688 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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[2023-12-25 20:18:16,754 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 20:18:16,908 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 20:18:16,909 INFO  L420      AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 20:18:16,909 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 20:18:16,910 INFO  L85        PathProgramCache]: Analyzing trace with hash -714644817, now seen corresponding path program 1 times
[2023-12-25 20:18:16,910 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 20:18:16,910 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [188092865]
[2023-12-25 20:18:16,910 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 20:18:16,910 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 20:18:17,339 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 20:18:17,340 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1423388236]
[2023-12-25 20:18:17,341 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 20:18:17,341 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 20:18:17,341 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 20:18:17,342 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 20:18:17,344 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 20:18:21,973 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 20:18:22,098 INFO  L262         TraceCheckSpWp]: Trace formula consists of 20874 conjuncts, 7 conjunts are in the unsatisfiable core
[2023-12-25 20:18:22,144 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 20:18:24,435 INFO  L134       CoverageAnalysis]: Checked inductivity of 259 backedges. 259 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-25 20:18:24,435 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 20:18:24,435 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 20:18:24,435 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [188092865]
[2023-12-25 20:18:24,435 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 20:18:24,435 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1423388236]
[2023-12-25 20:18:24,435 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1423388236] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 20:18:24,435 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 20:18:24,436 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2023-12-25 20:18:24,436 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1538836538]
[2023-12-25 20:18:24,436 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 20:18:24,438 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2023-12-25 20:18:24,438 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 20:18:24,440 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2023-12-25 20:18:24,440 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30
[2023-12-25 20:18:24,441 INFO  L87              Difference]: Start difference. First operand 17897 states and 29641 transitions. Second operand  has 6 states, 6 states have (on average 840.8333333333334) internal successors, (5045), 6 states have internal predecessors, (5045), 0 states have call successors, (0), 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 20:18:30,713 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 20:18:30,713 INFO  L93              Difference]: Finished difference Result 39172 states and 64972 transitions.
[2023-12-25 20:18:30,713 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. 
[2023-12-25 20:18:30,715 INFO  L78                 Accepts]: Start accepts. Automaton has  has 6 states, 6 states have (on average 840.8333333333334) internal successors, (5045), 6 states have internal predecessors, (5045), 0 states have call successors, (0), 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 5045
[2023-12-25 20:18:30,717 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 20:18:30,751 INFO  L225             Difference]: With dead ends: 39172
[2023-12-25 20:18:30,751 INFO  L226             Difference]: Without dead ends: 25083
[2023-12-25 20:18:30,767 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5047 GetRequests, 5040 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72
[2023-12-25 20:18:30,768 INFO  L413           NwaCegarLoop]: 14853 mSDtfsCounter, 16347 mSDsluCounter, 39418 mSDsCounter, 0 mSdLazyCounter, 12429 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16347 SdHoareTripleChecker+Valid, 54271 SdHoareTripleChecker+Invalid, 12430 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12429 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.9s IncrementalHoareTripleChecker+Time
[2023-12-25 20:18:30,768 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [16347 Valid, 54271 Invalid, 12430 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 12429 Invalid, 0 Unknown, 0 Unchecked, 5.9s Time]
[2023-12-25 20:18:30,789 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 25083 states.
[2023-12-25 20:18:30,952 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 25083 to 18039.
[2023-12-25 20:18:30,970 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 18039 states, 18038 states have (on average 1.6561703071293934) internal successors, (29874), 18038 states have internal predecessors, (29874), 0 states have call successors, (0), 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 20:18:30,989 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 18039 states to 18039 states and 29874 transitions.
[2023-12-25 20:18:30,990 INFO  L78                 Accepts]: Start accepts. Automaton has 18039 states and 29874 transitions. Word has length 5045
[2023-12-25 20:18:30,991 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 20:18:30,991 INFO  L495      AbstractCegarLoop]: Abstraction has 18039 states and 29874 transitions.
[2023-12-25 20:18:30,992 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 6 states, 6 states have (on average 840.8333333333334) internal successors, (5045), 6 states have internal predecessors, (5045), 0 states have call successors, (0), 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 20:18:30,992 INFO  L276                IsEmpty]: Start isEmpty. Operand 18039 states and 29874 transitions.
[2023-12-25 20:18:31,223 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5047
[2023-12-25 20:18:31,223 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 20:18:31,225 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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[2023-12-25 20:18:31,293 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0
[2023-12-25 20:18:31,452 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 20:18:31,453 INFO  L420      AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 20:18:31,454 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 20:18:31,455 INFO  L85        PathProgramCache]: Analyzing trace with hash -900959163, now seen corresponding path program 1 times
[2023-12-25 20:18:31,455 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 20:18:31,455 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [637785293]
[2023-12-25 20:18:31,456 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 20:18:31,456 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 20:18:31,842 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 20:18:31,843 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1141006624]
[2023-12-25 20:18:31,844 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 20:18:31,844 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 20:18:31,844 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 20:18:31,860 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 20:18:31,862 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 20:18:36,468 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 20:18:36,596 INFO  L262         TraceCheckSpWp]: Trace formula consists of 20877 conjuncts, 15 conjunts are in the unsatisfiable core
[2023-12-25 20:18:36,644 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 20:18:39,267 INFO  L134       CoverageAnalysis]: Checked inductivity of 259 backedges. 259 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-25 20:18:39,267 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 20:18:39,267 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 20:18:39,268 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [637785293]
[2023-12-25 20:18:39,268 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 20:18:39,268 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1141006624]
[2023-12-25 20:18:39,268 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1141006624] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 20:18:39,268 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 20:18:39,268 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8
[2023-12-25 20:18:39,269 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1600533865]
[2023-12-25 20:18:39,269 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 20:18:39,271 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 8 states
[2023-12-25 20:18:39,271 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 20:18:39,273 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2023-12-25 20:18:39,273 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56
[2023-12-25 20:18:39,274 INFO  L87              Difference]: Start difference. First operand 18039 states and 29874 transitions. Second operand  has 8 states, 8 states have (on average 630.75) internal successors, (5046), 8 states have internal predecessors, (5046), 0 states have call successors, (0), 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 20:18:46,999 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 20:18:46,999 INFO  L93              Difference]: Finished difference Result 39458 states and 65443 transitions.
[2023-12-25 20:18:47,000 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. 
[2023-12-25 20:18:47,001 INFO  L78                 Accepts]: Start accepts. Automaton has  has 8 states, 8 states have (on average 630.75) internal successors, (5046), 8 states have internal predecessors, (5046), 0 states have call successors, (0), 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 5046
[2023-12-25 20:18:47,003 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 20:18:47,029 INFO  L225             Difference]: With dead ends: 39458
[2023-12-25 20:18:47,030 INFO  L226             Difference]: Without dead ends: 25298
[2023-12-25 20:18:47,044 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5047 GetRequests, 5039 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90
[2023-12-25 20:18:47,045 INFO  L413           NwaCegarLoop]: 14781 mSDtfsCounter, 16319 mSDsluCounter, 54039 mSDsCounter, 0 mSdLazyCounter, 15551 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16319 SdHoareTripleChecker+Valid, 68820 SdHoareTripleChecker+Invalid, 15555 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 15551 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.3s IncrementalHoareTripleChecker+Time
[2023-12-25 20:18:47,045 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [16319 Valid, 68820 Invalid, 15555 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [4 Valid, 15551 Invalid, 0 Unknown, 0 Unchecked, 7.3s Time]
[2023-12-25 20:18:47,059 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 25298 states.
[2023-12-25 20:18:47,200 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 25298 to 18327.
[2023-12-25 20:18:47,214 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 18327 states, 18326 states have (on average 1.655898723125614) internal successors, (30346), 18326 states have internal predecessors, (30346), 0 states have call successors, (0), 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 20:18:47,233 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 18327 states to 18327 states and 30346 transitions.
[2023-12-25 20:18:47,233 INFO  L78                 Accepts]: Start accepts. Automaton has 18327 states and 30346 transitions. Word has length 5046
[2023-12-25 20:18:47,234 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 20:18:47,235 INFO  L495      AbstractCegarLoop]: Abstraction has 18327 states and 30346 transitions.
[2023-12-25 20:18:47,235 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 8 states, 8 states have (on average 630.75) internal successors, (5046), 8 states have internal predecessors, (5046), 0 states have call successors, (0), 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 20:18:47,235 INFO  L276                IsEmpty]: Start isEmpty. Operand 18327 states and 30346 transitions.
[2023-12-25 20:18:47,360 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5047
[2023-12-25 20:18:47,360 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 20:18:47,361 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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[2023-12-25 20:18:47,413 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 20:18:47,576 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 20:18:47,576 INFO  L420      AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 20:18:47,577 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 20:18:47,577 INFO  L85        PathProgramCache]: Analyzing trace with hash -1172969981, now seen corresponding path program 1 times
[2023-12-25 20:18:47,578 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 20:18:47,578 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [824831377]
[2023-12-25 20:18:47,578 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 20:18:47,578 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 20:18:47,837 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 20:18:47,837 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1511236687]
[2023-12-25 20:18:47,838 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 20:18:47,838 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 20:18:47,838 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 20:18:47,839 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 20:18:47,947 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 20:18:52,560 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 20:18:52,691 INFO  L262         TraceCheckSpWp]: Trace formula consists of 20878 conjuncts, 10 conjunts are in the unsatisfiable core
[2023-12-25 20:18:52,738 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 20:18:55,011 INFO  L134       CoverageAnalysis]: Checked inductivity of 259 backedges. 259 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-25 20:18:55,011 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 20:18:55,011 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 20:18:55,011 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [824831377]
[2023-12-25 20:18:55,011 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 20:18:55,012 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1511236687]
[2023-12-25 20:18:55,012 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1511236687] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 20:18:55,012 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 20:18:55,012 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2023-12-25 20:18:55,012 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1232072175]
[2023-12-25 20:18:55,012 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 20:18:55,015 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2023-12-25 20:18:55,015 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 20:18:55,017 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2023-12-25 20:18:55,017 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30
[2023-12-25 20:18:55,018 INFO  L87              Difference]: Start difference. First operand 18327 states and 30346 transitions. Second operand  has 6 states, 6 states have (on average 841.0) internal successors, (5046), 6 states have internal predecessors, (5046), 0 states have call successors, (0), 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 20:19:00,896 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 20:19:00,897 INFO  L93              Difference]: Finished difference Result 39819 states and 66030 transitions.
[2023-12-25 20:19:00,897 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. 
[2023-12-25 20:19:00,898 INFO  L78                 Accepts]: Start accepts. Automaton has  has 6 states, 6 states have (on average 841.0) internal successors, (5046), 6 states have internal predecessors, (5046), 0 states have call successors, (0), 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 5046
[2023-12-25 20:19:00,899 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 20:19:00,923 INFO  L225             Difference]: With dead ends: 39819
[2023-12-25 20:19:00,923 INFO  L226             Difference]: Without dead ends: 25371
[2023-12-25 20:19:00,936 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5047 GetRequests, 5041 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56
[2023-12-25 20:19:00,937 INFO  L413           NwaCegarLoop]: 14782 mSDtfsCounter, 16057 mSDsluCounter, 39276 mSDsCounter, 0 mSdLazyCounter, 12285 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16057 SdHoareTripleChecker+Valid, 54058 SdHoareTripleChecker+Invalid, 12287 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 12285 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.6s IncrementalHoareTripleChecker+Time
[2023-12-25 20:19:00,937 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [16057 Valid, 54058 Invalid, 12287 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2 Valid, 12285 Invalid, 0 Unknown, 0 Unchecked, 5.6s Time]
[2023-12-25 20:19:00,953 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 25371 states.
[2023-12-25 20:19:01,083 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 25371 to 18327.
[2023-12-25 20:19:01,096 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 18327 states, 18326 states have (on average 1.655898723125614) internal successors, (30346), 18326 states have internal predecessors, (30346), 0 states have call successors, (0), 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 20:19:01,114 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 18327 states to 18327 states and 30346 transitions.
[2023-12-25 20:19:01,114 INFO  L78                 Accepts]: Start accepts. Automaton has 18327 states and 30346 transitions. Word has length 5046
[2023-12-25 20:19:01,116 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 20:19:01,116 INFO  L495      AbstractCegarLoop]: Abstraction has 18327 states and 30346 transitions.
[2023-12-25 20:19:01,117 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 6 states, 6 states have (on average 841.0) internal successors, (5046), 6 states have internal predecessors, (5046), 0 states have call successors, (0), 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 20:19:01,117 INFO  L276                IsEmpty]: Start isEmpty. Operand 18327 states and 30346 transitions.
[2023-12-25 20:19:01,244 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5047
[2023-12-25 20:19:01,244 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 20:19:01,245 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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[2023-12-25 20:19:01,302 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 20:19:01,472 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 20:19:01,472 INFO  L420      AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 20:19:01,473 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 20:19:01,473 INFO  L85        PathProgramCache]: Analyzing trace with hash -143388539, now seen corresponding path program 1 times
[2023-12-25 20:19:01,473 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 20:19:01,474 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [585674404]
[2023-12-25 20:19:01,474 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 20:19:01,474 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 20:19:01,815 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 20:19:01,815 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [211357447]
[2023-12-25 20:19:01,816 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 20:19:01,816 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 20:19:01,816 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 20:19:01,819 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 20:19:01,821 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 20:19:06,458 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 20:19:06,600 INFO  L262         TraceCheckSpWp]: Trace formula consists of 20879 conjuncts, 9 conjunts are in the unsatisfiable core
[2023-12-25 20:19:06,661 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 20:19:09,113 INFO  L134       CoverageAnalysis]: Checked inductivity of 259 backedges. 259 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-25 20:19:09,113 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 20:19:09,113 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 20:19:09,113 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [585674404]
[2023-12-25 20:19:09,113 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 20:19:09,113 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [211357447]
[2023-12-25 20:19:09,113 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [211357447] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 20:19:09,113 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 20:19:09,114 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2023-12-25 20:19:09,114 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [209038343]
[2023-12-25 20:19:09,114 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 20:19:09,116 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2023-12-25 20:19:09,116 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 20:19:09,119 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2023-12-25 20:19:09,119 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30
[2023-12-25 20:19:09,120 INFO  L87              Difference]: Start difference. First operand 18327 states and 30346 transitions. Second operand  has 6 states, 6 states have (on average 841.0) internal successors, (5046), 6 states have internal predecessors, (5046), 0 states have call successors, (0), 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 20:19:15,057 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 20:19:15,057 INFO  L93              Difference]: Finished difference Result 39819 states and 66030 transitions.
[2023-12-25 20:19:15,058 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. 
[2023-12-25 20:19:15,059 INFO  L78                 Accepts]: Start accepts. Automaton has  has 6 states, 6 states have (on average 841.0) internal successors, (5046), 6 states have internal predecessors, (5046), 0 states have call successors, (0), 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 5046
[2023-12-25 20:19:15,060 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 20:19:15,081 INFO  L225             Difference]: With dead ends: 39819
[2023-12-25 20:19:15,081 INFO  L226             Difference]: Without dead ends: 25371
[2023-12-25 20:19:15,095 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5047 GetRequests, 5041 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56
[2023-12-25 20:19:15,095 INFO  L413           NwaCegarLoop]: 9746 mSDtfsCounter, 16062 mSDsluCounter, 29216 mSDsCounter, 0 mSdLazyCounter, 10113 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16062 SdHoareTripleChecker+Valid, 38962 SdHoareTripleChecker+Invalid, 10114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 10113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.6s IncrementalHoareTripleChecker+Time
[2023-12-25 20:19:15,095 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [16062 Valid, 38962 Invalid, 10114 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 10113 Invalid, 0 Unknown, 0 Unchecked, 5.6s Time]
[2023-12-25 20:19:15,110 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 25371 states.
[2023-12-25 20:19:15,255 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 25371 to 18469.
[2023-12-25 20:19:15,272 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 18469 states, 18468 states have (on average 1.6558371236733809) internal successors, (30580), 18468 states have internal predecessors, (30580), 0 states have call successors, (0), 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 20:19:15,292 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 18469 states to 18469 states and 30580 transitions.
[2023-12-25 20:19:15,293 INFO  L78                 Accepts]: Start accepts. Automaton has 18469 states and 30580 transitions. Word has length 5046
[2023-12-25 20:19:15,294 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 20:19:15,294 INFO  L495      AbstractCegarLoop]: Abstraction has 18469 states and 30580 transitions.
[2023-12-25 20:19:15,295 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 6 states, 6 states have (on average 841.0) internal successors, (5046), 6 states have internal predecessors, (5046), 0 states have call successors, (0), 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 20:19:15,295 INFO  L276                IsEmpty]: Start isEmpty. Operand 18469 states and 30580 transitions.
[2023-12-25 20:19:15,422 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5048
[2023-12-25 20:19:15,422 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 20:19:15,423 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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[2023-12-25 20:19:15,480 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 20:19:15,636 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 20:19:15,637 INFO  L420      AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 20:19:15,637 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 20:19:15,638 INFO  L85        PathProgramCache]: Analyzing trace with hash 793536367, now seen corresponding path program 1 times
[2023-12-25 20:19:15,638 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 20:19:15,638 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1957972770]
[2023-12-25 20:19:15,638 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 20:19:15,638 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 20:19:15,928 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 20:19:15,928 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [498549037]
[2023-12-25 20:19:15,929 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 20:19:15,929 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 20:19:15,929 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 20:19:15,950 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 20:19:15,951 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 20:19:20,497 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 20:19:20,626 INFO  L262         TraceCheckSpWp]: Trace formula consists of 20880 conjuncts, 15 conjunts are in the unsatisfiable core
[2023-12-25 20:19:20,673 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 20:19:23,239 INFO  L134       CoverageAnalysis]: Checked inductivity of 259 backedges. 259 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-25 20:19:23,240 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 20:19:23,240 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 20:19:23,240 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1957972770]
[2023-12-25 20:19:23,240 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 20:19:23,240 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [498549037]
[2023-12-25 20:19:23,240 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [498549037] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 20:19:23,240 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 20:19:23,240 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8
[2023-12-25 20:19:23,241 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1331046120]
[2023-12-25 20:19:23,241 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 20:19:23,243 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 8 states
[2023-12-25 20:19:23,243 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 20:19:23,245 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2023-12-25 20:19:23,245 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56
[2023-12-25 20:19:23,246 INFO  L87              Difference]: Start difference. First operand 18469 states and 30580 transitions. Second operand  has 8 states, 8 states have (on average 630.875) internal successors, (5047), 8 states have internal predecessors, (5047), 0 states have call successors, (0), 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 20:19:28,750 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 20:19:28,750 INFO  L93              Difference]: Finished difference Result 40103 states and 66494 transitions.
[2023-12-25 20:19:28,750 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. 
[2023-12-25 20:19:28,751 INFO  L78                 Accepts]: Start accepts. Automaton has  has 8 states, 8 states have (on average 630.875) internal successors, (5047), 8 states have internal predecessors, (5047), 0 states have call successors, (0), 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 5047
[2023-12-25 20:19:28,753 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 20:19:28,774 INFO  L225             Difference]: With dead ends: 40103
[2023-12-25 20:19:28,774 INFO  L226             Difference]: Without dead ends: 25513
[2023-12-25 20:19:28,786 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5048 GetRequests, 5040 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90
[2023-12-25 20:19:28,787 INFO  L413           NwaCegarLoop]: 14710 mSDtfsCounter, 16130 mSDsluCounter, 44300 mSDsCounter, 0 mSdLazyCounter, 12977 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16130 SdHoareTripleChecker+Valid, 59010 SdHoareTripleChecker+Invalid, 12979 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 12977 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time
[2023-12-25 20:19:28,788 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [16130 Valid, 59010 Invalid, 12979 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2 Valid, 12977 Invalid, 0 Unknown, 0 Unchecked, 5.0s Time]
[2023-12-25 20:19:28,805 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 25513 states.
[2023-12-25 20:19:28,947 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 25513 to 18751.
[2023-12-25 20:19:28,964 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 18751 states, 18750 states have (on average 1.6555733333333333) internal successors, (31042), 18750 states have internal predecessors, (31042), 0 states have call successors, (0), 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 20:19:28,983 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 18751 states to 18751 states and 31042 transitions.
[2023-12-25 20:19:28,983 INFO  L78                 Accepts]: Start accepts. Automaton has 18751 states and 31042 transitions. Word has length 5047
[2023-12-25 20:19:28,985 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 20:19:28,985 INFO  L495      AbstractCegarLoop]: Abstraction has 18751 states and 31042 transitions.
[2023-12-25 20:19:28,986 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 8 states, 8 states have (on average 630.875) internal successors, (5047), 8 states have internal predecessors, (5047), 0 states have call successors, (0), 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 20:19:28,986 INFO  L276                IsEmpty]: Start isEmpty. Operand 18751 states and 31042 transitions.
[2023-12-25 20:19:29,111 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5048
[2023-12-25 20:19:29,111 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 20:19:29,126 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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[2023-12-25 20:19:29,199 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0
[2023-12-25 20:19:29,348 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 20:19:29,349 INFO  L420      AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 20:19:29,349 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 20:19:29,350 INFO  L85        PathProgramCache]: Analyzing trace with hash 951135601, now seen corresponding path program 1 times
[2023-12-25 20:19:29,350 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 20:19:29,350 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [212501491]
[2023-12-25 20:19:29,350 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 20:19:29,350 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 20:19:29,637 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 20:19:29,637 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2036708476]
[2023-12-25 20:19:29,638 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 20:19:29,638 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 20:19:29,638 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 20:19:29,639 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 20:19:29,641 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 20:19:34,158 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 20:19:34,288 INFO  L262         TraceCheckSpWp]: Trace formula consists of 20881 conjuncts, 10 conjunts are in the unsatisfiable core
[2023-12-25 20:19:34,339 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 20:19:37,055 INFO  L134       CoverageAnalysis]: Checked inductivity of 259 backedges. 259 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-25 20:19:37,055 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 20:19:37,055 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 20:19:37,055 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [212501491]
[2023-12-25 20:19:37,055 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 20:19:37,055 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2036708476]
[2023-12-25 20:19:37,055 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [2036708476] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 20:19:37,055 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 20:19:37,056 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2023-12-25 20:19:37,056 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [739045512]
[2023-12-25 20:19:37,056 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 20:19:37,059 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2023-12-25 20:19:37,059 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 20:19:37,062 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2023-12-25 20:19:37,062 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30
[2023-12-25 20:19:37,063 INFO  L87              Difference]: Start difference. First operand 18751 states and 31042 transitions. Second operand  has 6 states, 6 states have (on average 841.1666666666666) internal successors, (5047), 6 states have internal predecessors, (5047), 0 states have call successors, (0), 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 20:19:43,727 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 20:19:43,728 INFO  L93              Difference]: Finished difference Result 40523 states and 67182 transitions.
[2023-12-25 20:19:43,728 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. 
[2023-12-25 20:19:43,729 INFO  L78                 Accepts]: Start accepts. Automaton has  has 6 states, 6 states have (on average 841.1666666666666) internal successors, (5047), 6 states have internal predecessors, (5047), 0 states have call successors, (0), 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 5047
[2023-12-25 20:19:43,730 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 20:19:43,754 INFO  L225             Difference]: With dead ends: 40523
[2023-12-25 20:19:43,755 INFO  L226             Difference]: Without dead ends: 25651
[2023-12-25 20:19:43,770 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5048 GetRequests, 5042 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56
[2023-12-25 20:19:43,771 INFO  L413           NwaCegarLoop]: 14711 mSDtfsCounter, 16008 mSDsluCounter, 39135 mSDsCounter, 0 mSdLazyCounter, 12152 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16008 SdHoareTripleChecker+Valid, 53846 SdHoareTripleChecker+Invalid, 12154 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 12152 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.3s IncrementalHoareTripleChecker+Time
[2023-12-25 20:19:43,771 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [16008 Valid, 53846 Invalid, 12154 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2 Valid, 12152 Invalid, 0 Unknown, 0 Unchecked, 6.3s Time]
[2023-12-25 20:19:43,788 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 25651 states.
[2023-12-25 20:19:43,941 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 25651 to 18607.
[2023-12-25 20:19:43,956 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 18607 states, 18606 states have (on average 1.655702461571536) internal successors, (30806), 18606 states have internal predecessors, (30806), 0 states have call successors, (0), 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 20:19:44,155 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 18607 states to 18607 states and 30806 transitions.
[2023-12-25 20:19:44,155 INFO  L78                 Accepts]: Start accepts. Automaton has 18607 states and 30806 transitions. Word has length 5047
[2023-12-25 20:19:44,157 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 20:19:44,157 INFO  L495      AbstractCegarLoop]: Abstraction has 18607 states and 30806 transitions.
[2023-12-25 20:19:44,157 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 6 states, 6 states have (on average 841.1666666666666) internal successors, (5047), 6 states have internal predecessors, (5047), 0 states have call successors, (0), 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 20:19:44,158 INFO  L276                IsEmpty]: Start isEmpty. Operand 18607 states and 30806 transitions.
[2023-12-25 20:19:44,281 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5048
[2023-12-25 20:19:44,281 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 20:19:44,295 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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[2023-12-25 20:19:44,353 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0
[2023-12-25 20:19:44,496 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 20:19:44,496 INFO  L420      AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 20:19:44,497 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 20:19:44,498 INFO  L85        PathProgramCache]: Analyzing trace with hash -1491578065, now seen corresponding path program 1 times
[2023-12-25 20:19:44,498 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 20:19:44,498 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [127368477]
[2023-12-25 20:19:44,499 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 20:19:44,499 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 20:19:44,790 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 20:19:44,791 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1460869319]
[2023-12-25 20:19:44,804 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 20:19:44,805 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 20:19:44,805 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 20:19:44,806 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 20:19:44,808 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 20:19:49,280 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 20:19:49,417 INFO  L262         TraceCheckSpWp]: Trace formula consists of 20882 conjuncts, 11 conjunts are in the unsatisfiable core
[2023-12-25 20:19:49,466 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 20:19:51,662 INFO  L134       CoverageAnalysis]: Checked inductivity of 259 backedges. 259 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-25 20:19:51,662 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 20:19:51,662 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 20:19:51,662 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [127368477]
[2023-12-25 20:19:51,662 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 20:19:51,662 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1460869319]
[2023-12-25 20:19:51,663 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1460869319] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 20:19:51,663 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 20:19:51,663 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2023-12-25 20:19:51,663 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2017006345]
[2023-12-25 20:19:51,663 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 20:19:51,667 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2023-12-25 20:19:51,667 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 20:19:51,670 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2023-12-25 20:19:51,670 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30
[2023-12-25 20:19:51,671 INFO  L87              Difference]: Start difference. First operand 18607 states and 30806 transitions. Second operand  has 6 states, 6 states have (on average 841.1666666666666) internal successors, (5047), 6 states have internal predecessors, (5047), 0 states have call successors, (0), 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 20:19:57,136 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 20:19:57,137 INFO  L93              Difference]: Finished difference Result 40235 states and 66710 transitions.
[2023-12-25 20:19:57,137 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. 
[2023-12-25 20:19:57,138 INFO  L78                 Accepts]: Start accepts. Automaton has  has 6 states, 6 states have (on average 841.1666666666666) internal successors, (5047), 6 states have internal predecessors, (5047), 0 states have call successors, (0), 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 5047
[2023-12-25 20:19:57,139 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 20:19:57,161 INFO  L225             Difference]: With dead ends: 40235
[2023-12-25 20:19:57,161 INFO  L226             Difference]: Without dead ends: 25507
[2023-12-25 20:19:57,174 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5048 GetRequests, 5042 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56
[2023-12-25 20:19:57,178 INFO  L413           NwaCegarLoop]: 9747 mSDtfsCounter, 15896 mSDsluCounter, 29217 mSDsCounter, 0 mSdLazyCounter, 10111 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15896 SdHoareTripleChecker+Valid, 38964 SdHoareTripleChecker+Invalid, 10112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 10111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.2s IncrementalHoareTripleChecker+Time
[2023-12-25 20:19:57,182 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [15896 Valid, 38964 Invalid, 10112 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 10111 Invalid, 0 Unknown, 0 Unchecked, 5.2s Time]
[2023-12-25 20:19:57,223 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 25507 states.
[2023-12-25 20:19:57,364 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 25507 to 18743.
[2023-12-25 20:19:57,380 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 18743 states, 18742 states have (on average 1.6556397396222389) internal successors, (31030), 18742 states have internal predecessors, (31030), 0 states have call successors, (0), 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 20:19:57,399 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 18743 states to 18743 states and 31030 transitions.
[2023-12-25 20:19:57,400 INFO  L78                 Accepts]: Start accepts. Automaton has 18743 states and 31030 transitions. Word has length 5047
[2023-12-25 20:19:57,401 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 20:19:57,401 INFO  L495      AbstractCegarLoop]: Abstraction has 18743 states and 31030 transitions.
[2023-12-25 20:19:57,402 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 6 states, 6 states have (on average 841.1666666666666) internal successors, (5047), 6 states have internal predecessors, (5047), 0 states have call successors, (0), 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 20:19:57,402 INFO  L276                IsEmpty]: Start isEmpty. Operand 18743 states and 31030 transitions.
[2023-12-25 20:19:57,531 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5049
[2023-12-25 20:19:57,531 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 20:19:57,532 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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[2023-12-25 20:19:57,587 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 20:19:57,748 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 20:19:57,749 INFO  L420      AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 20:19:57,749 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 20:19:57,749 INFO  L85        PathProgramCache]: Analyzing trace with hash -918827345, now seen corresponding path program 1 times
[2023-12-25 20:19:57,750 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 20:19:57,750 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1436466880]
[2023-12-25 20:19:57,750 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 20:19:57,750 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 20:19:58,038 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 20:19:58,038 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1613621453]
[2023-12-25 20:19:58,039 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 20:19:58,039 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 20:19:58,039 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 20:19:58,052 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 20:19:58,053 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 20:20:02,555 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 20:20:02,687 INFO  L262         TraceCheckSpWp]: Trace formula consists of 20883 conjuncts, 15 conjunts are in the unsatisfiable core
[2023-12-25 20:20:02,947 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 20:20:06,182 INFO  L134       CoverageAnalysis]: Checked inductivity of 259 backedges. 259 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-25 20:20:06,183 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 20:20:06,183 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 20:20:06,183 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1436466880]
[2023-12-25 20:20:06,183 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 20:20:06,183 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1613621453]
[2023-12-25 20:20:06,183 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1613621453] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 20:20:06,183 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 20:20:06,184 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8
[2023-12-25 20:20:06,184 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1322663464]
[2023-12-25 20:20:06,184 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 20:20:06,186 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 8 states
[2023-12-25 20:20:06,186 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 20:20:06,188 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2023-12-25 20:20:06,189 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56
[2023-12-25 20:20:06,189 INFO  L87              Difference]: Start difference. First operand 18743 states and 31030 transitions. Second operand  has 8 states, 8 states have (on average 631.0) internal successors, (5048), 8 states have internal predecessors, (5048), 0 states have call successors, (0), 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 20:20:14,093 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 20:20:14,093 INFO  L93              Difference]: Finished difference Result 40651 states and 67390 transitions.
[2023-12-25 20:20:14,093 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. 
[2023-12-25 20:20:14,094 INFO  L78                 Accepts]: Start accepts. Automaton has  has 8 states, 8 states have (on average 631.0) internal successors, (5048), 8 states have internal predecessors, (5048), 0 states have call successors, (0), 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 5048
[2023-12-25 20:20:14,096 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 20:20:14,120 INFO  L225             Difference]: With dead ends: 40651
[2023-12-25 20:20:14,121 INFO  L226             Difference]: Without dead ends: 25787
[2023-12-25 20:20:14,135 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5049 GetRequests, 5041 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90
[2023-12-25 20:20:14,136 INFO  L413           NwaCegarLoop]: 14293 mSDtfsCounter, 15891 mSDsluCounter, 57745 mSDsCounter, 0 mSdLazyCounter, 15513 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15891 SdHoareTripleChecker+Valid, 72038 SdHoareTripleChecker+Invalid, 15515 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 15513 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.5s IncrementalHoareTripleChecker+Time
[2023-12-25 20:20:14,136 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [15891 Valid, 72038 Invalid, 15515 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2 Valid, 15513 Invalid, 0 Unknown, 0 Unchecked, 7.5s Time]
[2023-12-25 20:20:14,153 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 25787 states.
[2023-12-25 20:20:14,304 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 25787 to 19727.
[2023-12-25 20:20:14,320 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 19727 states, 19726 states have (on average 1.6555814660853696) internal successors, (32658), 19726 states have internal predecessors, (32658), 0 states have call successors, (0), 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 20:20:14,339 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 19727 states to 19727 states and 32658 transitions.
[2023-12-25 20:20:14,339 INFO  L78                 Accepts]: Start accepts. Automaton has 19727 states and 32658 transitions. Word has length 5048
[2023-12-25 20:20:14,341 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 20:20:14,341 INFO  L495      AbstractCegarLoop]: Abstraction has 19727 states and 32658 transitions.
[2023-12-25 20:20:14,341 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 8 states, 8 states have (on average 631.0) internal successors, (5048), 8 states have internal predecessors, (5048), 0 states have call successors, (0), 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 20:20:14,342 INFO  L276                IsEmpty]: Start isEmpty. Operand 19727 states and 32658 transitions.
[2023-12-25 20:20:14,467 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5049
[2023-12-25 20:20:14,467 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 20:20:14,468 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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[2023-12-25 20:20:14,522 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 20:20:14,676 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 20:20:14,677 INFO  L420      AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 20:20:14,677 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 20:20:14,677 INFO  L85        PathProgramCache]: Analyzing trace with hash -328218387, now seen corresponding path program 1 times
[2023-12-25 20:20:14,677 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 20:20:14,677 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1238504856]
[2023-12-25 20:20:14,678 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 20:20:14,678 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 20:20:15,029 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 20:20:15,030 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [614491323]
[2023-12-25 20:20:15,030 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 20:20:15,031 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 20:20:15,031 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 20:20:15,031 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 20:20:15,033 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 20:20:19,536 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 20:20:19,661 INFO  L262         TraceCheckSpWp]: Trace formula consists of 20884 conjuncts, 10 conjunts are in the unsatisfiable core
[2023-12-25 20:20:19,709 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 20:20:22,261 INFO  L134       CoverageAnalysis]: Checked inductivity of 259 backedges. 259 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-25 20:20:22,261 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 20:20:22,261 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 20:20:22,261 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1238504856]
[2023-12-25 20:20:22,261 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 20:20:22,261 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [614491323]
[2023-12-25 20:20:22,261 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [614491323] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 20:20:22,262 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 20:20:22,262 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2023-12-25 20:20:22,262 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1991986116]
[2023-12-25 20:20:22,262 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 20:20:22,265 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2023-12-25 20:20:22,265 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 20:20:22,267 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2023-12-25 20:20:22,267 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30
[2023-12-25 20:20:22,268 INFO  L87              Difference]: Start difference. First operand 19727 states and 32658 transitions. Second operand  has 6 states, 6 states have (on average 841.3333333333334) internal successors, (5048), 6 states have internal predecessors, (5048), 0 states have call successors, (0), 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 20:20:28,705 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 20:20:28,705 INFO  L93              Difference]: Finished difference Result 42337 states and 70184 transitions.
[2023-12-25 20:20:28,706 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. 
[2023-12-25 20:20:28,707 INFO  L78                 Accepts]: Start accepts. Automaton has  has 6 states, 6 states have (on average 841.3333333333334) internal successors, (5048), 6 states have internal predecessors, (5048), 0 states have call successors, (0), 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 5048
[2023-12-25 20:20:28,709 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 20:20:28,737 INFO  L225             Difference]: With dead ends: 42337
[2023-12-25 20:20:28,737 INFO  L226             Difference]: Without dead ends: 26489
[2023-12-25 20:20:28,752 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5049 GetRequests, 5043 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56
[2023-12-25 20:20:28,753 INFO  L413           NwaCegarLoop]: 14294 mSDtfsCounter, 16256 mSDsluCounter, 38302 mSDsCounter, 0 mSdLazyCounter, 11647 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16256 SdHoareTripleChecker+Valid, 52596 SdHoareTripleChecker+Invalid, 11649 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11647 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.1s IncrementalHoareTripleChecker+Time
[2023-12-25 20:20:28,753 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [16256 Valid, 52596 Invalid, 11649 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2 Valid, 11647 Invalid, 0 Unknown, 0 Unchecked, 6.1s Time]
[2023-12-25 20:20:28,773 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 26489 states.
[2023-12-25 20:20:28,939 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 26489 to 19445.
[2023-12-25 20:20:28,956 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 19445 states, 19444 states have (on average 1.655832133305904) internal successors, (32196), 19444 states have internal predecessors, (32196), 0 states have call successors, (0), 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 20:20:28,976 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 19445 states to 19445 states and 32196 transitions.
[2023-12-25 20:20:28,976 INFO  L78                 Accepts]: Start accepts. Automaton has 19445 states and 32196 transitions. Word has length 5048
[2023-12-25 20:20:28,977 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 20:20:28,978 INFO  L495      AbstractCegarLoop]: Abstraction has 19445 states and 32196 transitions.
[2023-12-25 20:20:28,979 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 6 states, 6 states have (on average 841.3333333333334) internal successors, (5048), 6 states have internal predecessors, (5048), 0 states have call successors, (0), 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 20:20:28,979 INFO  L276                IsEmpty]: Start isEmpty. Operand 19445 states and 32196 transitions.
[2023-12-25 20:20:29,185 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5049
[2023-12-25 20:20:29,185 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 20:20:29,186 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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[2023-12-25 20:20:29,242 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 20:20:29,408 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 20:20:29,409 INFO  L420      AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 20:20:29,409 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 20:20:29,410 INFO  L85        PathProgramCache]: Analyzing trace with hash 1257069295, now seen corresponding path program 1 times
[2023-12-25 20:20:29,410 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 20:20:29,410 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1155078097]
[2023-12-25 20:20:29,410 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 20:20:29,410 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 20:20:29,689 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 20:20:29,689 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [786289981]
[2023-12-25 20:20:29,690 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 20:20:29,690 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 20:20:29,690 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 20:20:29,691 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 20:20:29,718 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 20:20:34,203 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 20:20:34,324 INFO  L262         TraceCheckSpWp]: Trace formula consists of 20885 conjuncts, 11 conjunts are in the unsatisfiable core
[2023-12-25 20:20:34,369 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 20:20:37,377 INFO  L134       CoverageAnalysis]: Checked inductivity of 259 backedges. 259 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-25 20:20:37,377 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 20:20:37,377 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 20:20:37,377 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1155078097]
[2023-12-25 20:20:37,377 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 20:20:37,377 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [786289981]
[2023-12-25 20:20:37,377 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [786289981] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 20:20:37,377 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 20:20:37,378 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2023-12-25 20:20:37,378 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2112749423]
[2023-12-25 20:20:37,378 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 20:20:37,390 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2023-12-25 20:20:37,390 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 20:20:37,392 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2023-12-25 20:20:37,392 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30
[2023-12-25 20:20:37,393 INFO  L87              Difference]: Start difference. First operand 19445 states and 32196 transitions. Second operand  has 6 states, 6 states have (on average 841.3333333333334) internal successors, (5048), 6 states have internal predecessors, (5048), 0 states have call successors, (0), 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 20:20:42,721 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 20:20:42,721 INFO  L93              Difference]: Finished difference Result 41775 states and 69264 transitions.
[2023-12-25 20:20:42,722 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. 
[2023-12-25 20:20:42,723 INFO  L78                 Accepts]: Start accepts. Automaton has  has 6 states, 6 states have (on average 841.3333333333334) internal successors, (5048), 6 states have internal predecessors, (5048), 0 states have call successors, (0), 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 5048
[2023-12-25 20:20:42,726 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 20:20:42,761 INFO  L225             Difference]: With dead ends: 41775
[2023-12-25 20:20:42,761 INFO  L226             Difference]: Without dead ends: 26209
[2023-12-25 20:20:42,780 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5049 GetRequests, 5043 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56
[2023-12-25 20:20:42,780 INFO  L413           NwaCegarLoop]: 9747 mSDtfsCounter, 21131 mSDsluCounter, 29217 mSDsCounter, 0 mSdLazyCounter, 10111 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21131 SdHoareTripleChecker+Valid, 38964 SdHoareTripleChecker+Invalid, 10112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 10111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time
[2023-12-25 20:20:42,781 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [21131 Valid, 38964 Invalid, 10112 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 10111 Invalid, 0 Unknown, 0 Unchecked, 5.0s Time]
[2023-12-25 20:20:42,808 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 26209 states.
[2023-12-25 20:20:43,004 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 26209 to 20147.
[2023-12-25 20:20:43,024 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 20147 states, 20146 states have (on average 1.6561103941229027) internal successors, (33364), 20146 states have internal predecessors, (33364), 0 states have call successors, (0), 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 20:20:43,049 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 20147 states to 20147 states and 33364 transitions.
[2023-12-25 20:20:43,049 INFO  L78                 Accepts]: Start accepts. Automaton has 20147 states and 33364 transitions. Word has length 5048
[2023-12-25 20:20:43,051 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 20:20:43,051 INFO  L495      AbstractCegarLoop]: Abstraction has 20147 states and 33364 transitions.
[2023-12-25 20:20:43,052 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 6 states, 6 states have (on average 841.3333333333334) internal successors, (5048), 6 states have internal predecessors, (5048), 0 states have call successors, (0), 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 20:20:43,052 INFO  L276                IsEmpty]: Start isEmpty. Operand 20147 states and 33364 transitions.
[2023-12-25 20:20:43,282 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5050
[2023-12-25 20:20:43,282 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 20:20:43,283 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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[2023-12-25 20:20:43,341 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 20:20:43,501 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 20:20:43,501 INFO  L420      AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 20:20:43,502 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 20:20:43,503 INFO  L85        PathProgramCache]: Analyzing trace with hash 1088585485, now seen corresponding path program 1 times
[2023-12-25 20:20:43,503 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 20:20:43,503 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [154232257]
[2023-12-25 20:20:43,503 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 20:20:43,503 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 20:20:43,812 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 20:20:43,812 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [5614322]
[2023-12-25 20:20:43,813 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 20:20:43,813 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 20:20:43,814 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 20:20:43,814 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 20:20:43,816 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 20:20:48,308 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 20:20:48,448 INFO  L262         TraceCheckSpWp]: Trace formula consists of 20886 conjuncts, 15 conjunts are in the unsatisfiable core
[2023-12-25 20:20:48,501 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 20:20:52,140 INFO  L134       CoverageAnalysis]: Checked inductivity of 259 backedges. 259 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-25 20:20:52,141 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 20:20:52,141 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 20:20:52,141 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [154232257]
[2023-12-25 20:20:52,141 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 20:20:52,141 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [5614322]
[2023-12-25 20:20:52,141 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [5614322] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 20:20:52,141 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 20:20:52,142 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8
[2023-12-25 20:20:52,142 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [923890867]
[2023-12-25 20:20:52,142 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 20:20:52,144 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 8 states
[2023-12-25 20:20:52,144 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 20:20:52,147 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2023-12-25 20:20:52,147 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56
[2023-12-25 20:20:52,148 INFO  L87              Difference]: Start difference. First operand 20147 states and 33364 transitions. Second operand  has 8 states, 8 states have (on average 631.125) internal successors, (5049), 8 states have internal predecessors, (5049), 0 states have call successors, (0), 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 20:20:58,881 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 20:20:58,881 INFO  L93              Difference]: Finished difference Result 43459 states and 72054 transitions.
[2023-12-25 20:20:58,881 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. 
[2023-12-25 20:20:58,882 INFO  L78                 Accepts]: Start accepts. Automaton has  has 8 states, 8 states have (on average 631.125) internal successors, (5049), 8 states have internal predecessors, (5049), 0 states have call successors, (0), 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 5049
[2023-12-25 20:20:58,884 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 20:20:58,907 INFO  L225             Difference]: With dead ends: 43459
[2023-12-25 20:20:58,907 INFO  L226             Difference]: Without dead ends: 27191
[2023-12-25 20:20:58,921 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5050 GetRequests, 5042 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90
[2023-12-25 20:20:58,922 INFO  L413           NwaCegarLoop]: 14158 mSDtfsCounter, 16482 mSDsluCounter, 52176 mSDsCounter, 0 mSdLazyCounter, 14457 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16482 SdHoareTripleChecker+Valid, 66334 SdHoareTripleChecker+Invalid, 14459 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 14457 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.3s IncrementalHoareTripleChecker+Time
[2023-12-25 20:20:58,922 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [16482 Valid, 66334 Invalid, 14459 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2 Valid, 14457 Invalid, 0 Unknown, 0 Unchecked, 6.3s Time]
[2023-12-25 20:20:58,939 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 27191 states.
[2023-12-25 20:20:59,090 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 27191 to 21365.
[2023-12-25 20:20:59,109 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 21365 states, 21364 states have (on average 1.6559633027522935) internal successors, (35378), 21364 states have internal predecessors, (35378), 0 states have call successors, (0), 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 20:20:59,130 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 21365 states to 21365 states and 35378 transitions.
[2023-12-25 20:20:59,130 INFO  L78                 Accepts]: Start accepts. Automaton has 21365 states and 35378 transitions. Word has length 5049
[2023-12-25 20:20:59,132 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 20:20:59,132 INFO  L495      AbstractCegarLoop]: Abstraction has 21365 states and 35378 transitions.
[2023-12-25 20:20:59,133 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 8 states, 8 states have (on average 631.125) internal successors, (5049), 8 states have internal predecessors, (5049), 0 states have call successors, (0), 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 20:20:59,133 INFO  L276                IsEmpty]: Start isEmpty. Operand 21365 states and 35378 transitions.
[2023-12-25 20:20:59,258 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5050
[2023-12-25 20:20:59,258 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 20:20:59,259 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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[2023-12-25 20:20:59,318 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0
[2023-12-25 20:20:59,480 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 20:20:59,480 INFO  L420      AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 20:20:59,481 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 20:20:59,481 INFO  L85        PathProgramCache]: Analyzing trace with hash -2077373297, now seen corresponding path program 1 times
[2023-12-25 20:20:59,481 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 20:20:59,481 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1201795966]
[2023-12-25 20:20:59,482 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 20:20:59,482 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 20:20:59,772 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 20:20:59,772 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [325594271]
[2023-12-25 20:20:59,773 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 20:20:59,773 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 20:20:59,773 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 20:20:59,774 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 20:20:59,776 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 20:21:04,355 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 20:21:04,483 INFO  L262         TraceCheckSpWp]: Trace formula consists of 20887 conjuncts, 10 conjunts are in the unsatisfiable core
[2023-12-25 20:21:04,529 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 20:21:07,931 INFO  L134       CoverageAnalysis]: Checked inductivity of 259 backedges. 259 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-25 20:21:07,932 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 20:21:07,932 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 20:21:07,932 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1201795966]
[2023-12-25 20:21:07,932 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 20:21:07,932 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [325594271]
[2023-12-25 20:21:07,932 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [325594271] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 20:21:07,932 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 20:21:07,933 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2023-12-25 20:21:07,933 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1478486785]
[2023-12-25 20:21:07,933 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 20:21:07,935 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2023-12-25 20:21:07,935 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 20:21:07,937 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2023-12-25 20:21:07,937 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30
[2023-12-25 20:21:07,938 INFO  L87              Difference]: Start difference. First operand 21365 states and 35378 transitions. Second operand  has 6 states, 6 states have (on average 841.5) internal successors, (5049), 6 states have internal predecessors, (5049), 0 states have call successors, (0), 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 20:21:13,303 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 20:21:13,303 INFO  L93              Difference]: Finished difference Result 44911 states and 74454 transitions.
[2023-12-25 20:21:13,303 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. 
[2023-12-25 20:21:13,305 INFO  L78                 Accepts]: Start accepts. Automaton has  has 6 states, 6 states have (on average 841.5) internal successors, (5049), 6 states have internal predecessors, (5049), 0 states have call successors, (0), 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 5049
[2023-12-25 20:21:13,307 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 20:21:13,334 INFO  L225             Difference]: With dead ends: 44911
[2023-12-25 20:21:13,334 INFO  L226             Difference]: Without dead ends: 27425
[2023-12-25 20:21:13,350 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5050 GetRequests, 5044 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56
[2023-12-25 20:21:13,351 INFO  L413           NwaCegarLoop]: 14159 mSDtfsCounter, 15690 mSDsluCounter, 38033 mSDsCounter, 0 mSdLazyCounter, 11466 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15690 SdHoareTripleChecker+Valid, 52192 SdHoareTripleChecker+Invalid, 11468 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11466 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time
[2023-12-25 20:21:13,351 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [15690 Valid, 52192 Invalid, 11468 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2 Valid, 11466 Invalid, 0 Unknown, 0 Unchecked, 5.1s Time]
[2023-12-25 20:21:13,371 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 27425 states.
[2023-12-25 20:21:13,672 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 27425 to 20381.
[2023-12-25 20:21:13,691 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 20381 states, 20380 states have (on average 1.65603532875368) internal successors, (33750), 20380 states have internal predecessors, (33750), 0 states have call successors, (0), 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 20:21:13,713 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 20381 states to 20381 states and 33750 transitions.
[2023-12-25 20:21:13,713 INFO  L78                 Accepts]: Start accepts. Automaton has 20381 states and 33750 transitions. Word has length 5049
[2023-12-25 20:21:13,714 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 20:21:13,715 INFO  L495      AbstractCegarLoop]: Abstraction has 20381 states and 33750 transitions.
[2023-12-25 20:21:13,715 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 6 states, 6 states have (on average 841.5) internal successors, (5049), 6 states have internal predecessors, (5049), 0 states have call successors, (0), 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 20:21:13,716 INFO  L276                IsEmpty]: Start isEmpty. Operand 20381 states and 33750 transitions.
[2023-12-25 20:21:13,841 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5050
[2023-12-25 20:21:13,841 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 20:21:13,842 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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[2023-12-25 20:21:13,899 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 20:21:14,047 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 20:21:14,048 INFO  L420      AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 20:21:14,048 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 20:21:14,048 INFO  L85        PathProgramCache]: Analyzing trace with hash -178095411, now seen corresponding path program 1 times
[2023-12-25 20:21:14,048 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 20:21:14,048 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1998700642]
[2023-12-25 20:21:14,049 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 20:21:14,049 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 20:21:14,319 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 20:21:14,319 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [129168900]
[2023-12-25 20:21:14,320 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 20:21:14,321 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 20:21:14,321 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 20:21:14,322 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 20:21:14,324 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 20:21:18,912 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 20:21:19,049 INFO  L262         TraceCheckSpWp]: Trace formula consists of 20888 conjuncts, 11 conjunts are in the unsatisfiable core
[2023-12-25 20:21:19,097 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 20:21:21,573 INFO  L134       CoverageAnalysis]: Checked inductivity of 259 backedges. 259 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-25 20:21:21,573 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 20:21:21,573 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 20:21:21,573 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1998700642]
[2023-12-25 20:21:21,574 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 20:21:21,574 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [129168900]
[2023-12-25 20:21:21,574 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [129168900] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 20:21:21,574 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 20:21:21,574 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2023-12-25 20:21:21,574 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [522467409]
[2023-12-25 20:21:21,575 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 20:21:21,578 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2023-12-25 20:21:21,578 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 20:21:21,581 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2023-12-25 20:21:21,582 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30
[2023-12-25 20:21:21,583 INFO  L87              Difference]: Start difference. First operand 20381 states and 33750 transitions. Second operand  has 6 states, 6 states have (on average 841.5) internal successors, (5049), 6 states have internal predecessors, (5049), 0 states have call successors, (0), 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 20:21:26,341 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 20:21:26,341 INFO  L93              Difference]: Finished difference Result 42945 states and 71202 transitions.
[2023-12-25 20:21:26,341 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. 
[2023-12-25 20:21:26,342 INFO  L78                 Accepts]: Start accepts. Automaton has  has 6 states, 6 states have (on average 841.5) internal successors, (5049), 6 states have internal predecessors, (5049), 0 states have call successors, (0), 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 5049
[2023-12-25 20:21:26,344 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 20:21:26,370 INFO  L225             Difference]: With dead ends: 42945
[2023-12-25 20:21:26,371 INFO  L226             Difference]: Without dead ends: 26443
[2023-12-25 20:21:26,386 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5050 GetRequests, 5044 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56
[2023-12-25 20:21:26,387 INFO  L413           NwaCegarLoop]: 9747 mSDtfsCounter, 15579 mSDsluCounter, 29217 mSDsCounter, 0 mSdLazyCounter, 10111 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15579 SdHoareTripleChecker+Valid, 38964 SdHoareTripleChecker+Invalid, 10112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 10111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time
[2023-12-25 20:21:26,387 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [15579 Valid, 38964 Invalid, 10112 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 10111 Invalid, 0 Unknown, 0 Unchecked, 4.5s Time]
[2023-12-25 20:21:26,408 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 26443 states.
[2023-12-25 20:21:26,568 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 26443 to 20615.
[2023-12-25 20:21:26,586 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 20615 states, 20614 states have (on average 1.6560589890365771) internal successors, (34138), 20614 states have internal predecessors, (34138), 0 states have call successors, (0), 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 20:21:26,771 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 20615 states to 20615 states and 34138 transitions.
[2023-12-25 20:21:26,772 INFO  L78                 Accepts]: Start accepts. Automaton has 20615 states and 34138 transitions. Word has length 5049
[2023-12-25 20:21:26,773 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 20:21:26,773 INFO  L495      AbstractCegarLoop]: Abstraction has 20615 states and 34138 transitions.
[2023-12-25 20:21:26,774 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 6 states, 6 states have (on average 841.5) internal successors, (5049), 6 states have internal predecessors, (5049), 0 states have call successors, (0), 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 20:21:26,774 INFO  L276                IsEmpty]: Start isEmpty. Operand 20615 states and 34138 transitions.
[2023-12-25 20:21:26,899 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5051
[2023-12-25 20:21:26,899 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 20:21:26,900 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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[2023-12-25 20:21:26,959 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0
[2023-12-25 20:21:27,115 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 20:21:27,115 INFO  L420      AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 20:21:27,116 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 20:21:27,117 INFO  L85        PathProgramCache]: Analyzing trace with hash 1893050361, now seen corresponding path program 1 times
[2023-12-25 20:21:27,117 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 20:21:27,123 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1164327850]
[2023-12-25 20:21:27,124 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 20:21:27,124 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 20:21:27,413 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 20:21:27,413 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [968337400]
[2023-12-25 20:21:27,414 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 20:21:27,414 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 20:21:27,414 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 20:21:27,415 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 20:21:27,418 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 20:21:31,989 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 20:21:32,121 INFO  L262         TraceCheckSpWp]: Trace formula consists of 20889 conjuncts, 15 conjunts are in the unsatisfiable core
[2023-12-25 20:21:32,171 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 20:21:35,178 INFO  L134       CoverageAnalysis]: Checked inductivity of 259 backedges. 259 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-25 20:21:35,180 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 20:21:35,180 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 20:21:35,180 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1164327850]
[2023-12-25 20:21:35,180 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 20:21:35,180 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [968337400]
[2023-12-25 20:21:35,180 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [968337400] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 20:21:35,180 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 20:21:35,181 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8
[2023-12-25 20:21:35,181 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1910638522]
[2023-12-25 20:21:35,181 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 20:21:35,183 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 8 states
[2023-12-25 20:21:35,183 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 20:21:35,185 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2023-12-25 20:21:35,185 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56
[2023-12-25 20:21:35,186 INFO  L87              Difference]: Start difference. First operand 20615 states and 34138 transitions. Second operand  has 8 states, 8 states have (on average 631.25) internal successors, (5050), 8 states have internal predecessors, (5050), 0 states have call successors, (0), 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 20:21:41,662 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 20:21:41,662 INFO  L93              Difference]: Finished difference Result 44395 states and 73598 transitions.
[2023-12-25 20:21:41,663 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. 
[2023-12-25 20:21:41,664 INFO  L78                 Accepts]: Start accepts. Automaton has  has 8 states, 8 states have (on average 631.25) internal successors, (5050), 8 states have internal predecessors, (5050), 0 states have call successors, (0), 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 5050
[2023-12-25 20:21:41,665 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 20:21:41,692 INFO  L225             Difference]: With dead ends: 44395
[2023-12-25 20:21:41,692 INFO  L226             Difference]: Without dead ends: 27659
[2023-12-25 20:21:41,708 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5051 GetRequests, 5043 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90
[2023-12-25 20:21:41,709 INFO  L413           NwaCegarLoop]: 14017 mSDtfsCounter, 16514 mSDsluCounter, 56921 mSDsCounter, 0 mSdLazyCounter, 15009 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16514 SdHoareTripleChecker+Valid, 70938 SdHoareTripleChecker+Invalid, 15011 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 15009 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.1s IncrementalHoareTripleChecker+Time
[2023-12-25 20:21:41,709 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [16514 Valid, 70938 Invalid, 15011 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2 Valid, 15009 Invalid, 0 Unknown, 0 Unchecked, 6.1s Time]
[2023-12-25 20:21:41,731 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 27659 states.
[2023-12-25 20:21:41,902 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 27659 to 22079.
[2023-12-25 20:21:41,920 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 22079 states, 22078 states have (on average 1.6558565087417338) internal successors, (36558), 22078 states have internal predecessors, (36558), 0 states have call successors, (0), 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 20:21:41,943 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 22079 states to 22079 states and 36558 transitions.
[2023-12-25 20:21:41,943 INFO  L78                 Accepts]: Start accepts. Automaton has 22079 states and 36558 transitions. Word has length 5050
[2023-12-25 20:21:41,944 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 20:21:41,944 INFO  L495      AbstractCegarLoop]: Abstraction has 22079 states and 36558 transitions.
[2023-12-25 20:21:41,945 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 8 states, 8 states have (on average 631.25) internal successors, (5050), 8 states have internal predecessors, (5050), 0 states have call successors, (0), 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 20:21:41,945 INFO  L276                IsEmpty]: Start isEmpty. Operand 22079 states and 36558 transitions.
[2023-12-25 20:21:42,072 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5051
[2023-12-25 20:21:42,072 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 20:21:42,073 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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[2023-12-25 20:21:42,134 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 20:21:42,288 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 20:21:42,288 INFO  L420      AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 20:21:42,289 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 20:21:42,289 INFO  L85        PathProgramCache]: Analyzing trace with hash -1762391369, now seen corresponding path program 1 times
[2023-12-25 20:21:42,289 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 20:21:42,289 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1301080757]
[2023-12-25 20:21:42,290 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 20:21:42,290 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 20:21:42,571 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 20:21:42,572 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1484421757]
[2023-12-25 20:21:42,573 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 20:21:42,573 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 20:21:42,573 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 20:21:42,574 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 20:21:42,575 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 20:21:47,599 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 20:21:47,727 INFO  L262         TraceCheckSpWp]: Trace formula consists of 20890 conjuncts, 10 conjunts are in the unsatisfiable core
[2023-12-25 20:21:47,777 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 20:21:50,701 INFO  L134       CoverageAnalysis]: Checked inductivity of 259 backedges. 259 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-25 20:21:50,701 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 20:21:50,701 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 20:21:50,701 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1301080757]
[2023-12-25 20:21:50,702 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 20:21:50,702 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1484421757]
[2023-12-25 20:21:50,702 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1484421757] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 20:21:50,702 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 20:21:50,702 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2023-12-25 20:21:50,702 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [161222654]
[2023-12-25 20:21:50,702 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 20:21:50,704 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2023-12-25 20:21:50,705 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 20:21:50,707 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2023-12-25 20:21:50,707 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30
[2023-12-25 20:21:50,708 INFO  L87              Difference]: Start difference. First operand 22079 states and 36558 transitions. Second operand  has 6 states, 6 states have (on average 841.6666666666666) internal successors, (5050), 6 states have internal predecessors, (5050), 0 states have call successors, (0), 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 20:21:55,654 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 20:21:55,654 INFO  L93              Difference]: Finished difference Result 46105 states and 76424 transitions.
[2023-12-25 20:21:55,654 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. 
[2023-12-25 20:21:55,655 INFO  L78                 Accepts]: Start accepts. Automaton has  has 6 states, 6 states have (on average 841.6666666666666) internal successors, (5050), 6 states have internal predecessors, (5050), 0 states have call successors, (0), 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 5050
[2023-12-25 20:21:55,657 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 20:21:55,683 INFO  L225             Difference]: With dead ends: 46105
[2023-12-25 20:21:55,684 INFO  L226             Difference]: Without dead ends: 27905
[2023-12-25 20:21:55,700 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5051 GetRequests, 5045 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56
[2023-12-25 20:21:55,703 INFO  L413           NwaCegarLoop]: 14018 mSDtfsCounter, 16326 mSDsluCounter, 37752 mSDsCounter, 0 mSdLazyCounter, 11273 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16326 SdHoareTripleChecker+Valid, 51770 SdHoareTripleChecker+Invalid, 11275 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11273 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time
[2023-12-25 20:21:55,703 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [16326 Valid, 51770 Invalid, 11275 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2 Valid, 11273 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time]
[2023-12-25 20:21:55,723 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 27905 states.
[2023-12-25 20:21:55,897 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 27905 to 20861.
[2023-12-25 20:21:55,917 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 20861 states, 20860 states have (on average 1.6559923298178332) internal successors, (34544), 20860 states have internal predecessors, (34544), 0 states have call successors, (0), 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 20:21:55,939 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 20861 states to 20861 states and 34544 transitions.
[2023-12-25 20:21:55,940 INFO  L78                 Accepts]: Start accepts. Automaton has 20861 states and 34544 transitions. Word has length 5050
[2023-12-25 20:21:55,941 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 20:21:55,941 INFO  L495      AbstractCegarLoop]: Abstraction has 20861 states and 34544 transitions.
[2023-12-25 20:21:55,942 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 6 states, 6 states have (on average 841.6666666666666) internal successors, (5050), 6 states have internal predecessors, (5050), 0 states have call successors, (0), 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 20:21:55,942 INFO  L276                IsEmpty]: Start isEmpty. Operand 20861 states and 34544 transitions.
[2023-12-25 20:21:56,070 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5051
[2023-12-25 20:21:56,070 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 20:21:56,071 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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[2023-12-25 20:21:56,121 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 20:21:56,296 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 20:21:56,296 INFO  L420      AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 20:21:56,297 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 20:21:56,297 INFO  L85        PathProgramCache]: Analyzing trace with hash 1280648249, now seen corresponding path program 1 times
[2023-12-25 20:21:56,297 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 20:21:56,297 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1773346672]
[2023-12-25 20:21:56,298 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 20:21:56,298 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 20:21:56,611 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 20:21:56,611 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1721750515]
[2023-12-25 20:21:56,612 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 20:21:56,612 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 20:21:56,612 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 20:21:56,628 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 20:21:56,635 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 20:22:01,381 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 20:22:01,514 INFO  L262         TraceCheckSpWp]: Trace formula consists of 20891 conjuncts, 11 conjunts are in the unsatisfiable core
[2023-12-25 20:22:01,563 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 20:22:04,599 INFO  L134       CoverageAnalysis]: Checked inductivity of 259 backedges. 259 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-25 20:22:04,599 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 20:22:04,599 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 20:22:04,599 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1773346672]
[2023-12-25 20:22:04,599 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 20:22:04,599 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1721750515]
[2023-12-25 20:22:04,599 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1721750515] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 20:22:04,599 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 20:22:04,600 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2023-12-25 20:22:04,600 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [813208410]
[2023-12-25 20:22:04,600 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 20:22:04,603 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2023-12-25 20:22:04,603 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 20:22:04,605 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2023-12-25 20:22:04,605 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30
[2023-12-25 20:22:04,605 INFO  L87              Difference]: Start difference. First operand 20861 states and 34544 transitions. Second operand  has 6 states, 6 states have (on average 841.6666666666666) internal successors, (5050), 6 states have internal predecessors, (5050), 0 states have call successors, (0), 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 20:22:10,462 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 20:22:10,462 INFO  L93              Difference]: Finished difference Result 43671 states and 72400 transitions.
[2023-12-25 20:22:10,462 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. 
[2023-12-25 20:22:10,463 INFO  L78                 Accepts]: Start accepts. Automaton has  has 6 states, 6 states have (on average 841.6666666666666) internal successors, (5050), 6 states have internal predecessors, (5050), 0 states have call successors, (0), 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 5050
[2023-12-25 20:22:10,465 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 20:22:10,489 INFO  L225             Difference]: With dead ends: 43671
[2023-12-25 20:22:10,489 INFO  L226             Difference]: Without dead ends: 26689
[2023-12-25 20:22:10,505 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5051 GetRequests, 5045 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56
[2023-12-25 20:22:10,505 INFO  L413           NwaCegarLoop]: 9747 mSDtfsCounter, 15496 mSDsluCounter, 29217 mSDsCounter, 0 mSdLazyCounter, 10111 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15496 SdHoareTripleChecker+Valid, 38964 SdHoareTripleChecker+Invalid, 10112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 10111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.6s IncrementalHoareTripleChecker+Time
[2023-12-25 20:22:10,505 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [15496 Valid, 38964 Invalid, 10112 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 10111 Invalid, 0 Unknown, 0 Unchecked, 5.6s Time]
[2023-12-25 20:22:10,526 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 26689 states.
[2023-12-25 20:22:10,701 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 26689 to 21107.
[2023-12-25 20:22:10,718 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 21107 states, 21106 states have (on average 1.6560219842698758) internal successors, (34952), 21106 states have internal predecessors, (34952), 0 states have call successors, (0), 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 20:22:10,739 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 21107 states to 21107 states and 34952 transitions.
[2023-12-25 20:22:10,739 INFO  L78                 Accepts]: Start accepts. Automaton has 21107 states and 34952 transitions. Word has length 5050
[2023-12-25 20:22:10,741 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 20:22:10,741 INFO  L495      AbstractCegarLoop]: Abstraction has 21107 states and 34952 transitions.
[2023-12-25 20:22:10,742 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 6 states, 6 states have (on average 841.6666666666666) internal successors, (5050), 6 states have internal predecessors, (5050), 0 states have call successors, (0), 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 20:22:10,742 INFO  L276                IsEmpty]: Start isEmpty. Operand 21107 states and 34952 transitions.
[2023-12-25 20:22:10,867 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5052
[2023-12-25 20:22:10,867 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 20:22:10,868 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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[2023-12-25 20:22:10,921 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Ended with exit code 0
[2023-12-25 20:22:11,088 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 20:22:11,089 INFO  L420      AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 20:22:11,089 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 20:22:11,089 INFO  L85        PathProgramCache]: Analyzing trace with hash -1948177693, now seen corresponding path program 1 times
[2023-12-25 20:22:11,089 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 20:22:11,089 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1491164498]
[2023-12-25 20:22:11,090 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 20:22:11,090 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 20:22:11,369 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 20:22:11,370 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1393583923]
[2023-12-25 20:22:11,370 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 20:22:11,371 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 20:22:11,371 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 20:22:11,372 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 20:22:11,372 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 20:22:15,942 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 20:22:16,072 INFO  L262         TraceCheckSpWp]: Trace formula consists of 20892 conjuncts, 15 conjunts are in the unsatisfiable core
[2023-12-25 20:22:16,122 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 20:22:24,648 INFO  L134       CoverageAnalysis]: Checked inductivity of 259 backedges. 259 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-25 20:22:24,649 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 20:22:24,649 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 20:22:24,649 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1491164498]
[2023-12-25 20:22:24,649 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 20:22:24,649 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1393583923]
[2023-12-25 20:22:24,649 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1393583923] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 20:22:24,649 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 20:22:24,649 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8
[2023-12-25 20:22:24,649 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [177205243]
[2023-12-25 20:22:24,650 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 20:22:24,652 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 8 states
[2023-12-25 20:22:24,652 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 20:22:24,654 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2023-12-25 20:22:24,654 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56
[2023-12-25 20:22:24,655 INFO  L87              Difference]: Start difference. First operand 21107 states and 34952 transitions. Second operand  has 8 states, 8 states have (on average 631.375) internal successors, (5051), 8 states have internal predecessors, (5051), 0 states have call successors, (0), 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 20:22:30,944 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 20:22:30,945 INFO  L93              Difference]: Finished difference Result 45379 states and 75222 transitions.
[2023-12-25 20:22:30,948 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. 
[2023-12-25 20:22:30,949 INFO  L78                 Accepts]: Start accepts. Automaton has  has 8 states, 8 states have (on average 631.375) internal successors, (5051), 8 states have internal predecessors, (5051), 0 states have call successors, (0), 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 5051
[2023-12-25 20:22:30,952 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 20:22:30,981 INFO  L225             Difference]: With dead ends: 45379
[2023-12-25 20:22:30,981 INFO  L226             Difference]: Without dead ends: 28151
[2023-12-25 20:22:30,997 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5052 GetRequests, 5044 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90
[2023-12-25 20:22:30,997 INFO  L413           NwaCegarLoop]: 10806 mSDtfsCounter, 14320 mSDsluCounter, 42124 mSDsCounter, 0 mSdLazyCounter, 12981 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14320 SdHoareTripleChecker+Valid, 52930 SdHoareTripleChecker+Invalid, 12983 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 12981 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.9s IncrementalHoareTripleChecker+Time
[2023-12-25 20:22:30,997 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [14320 Valid, 52930 Invalid, 12983 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2 Valid, 12981 Invalid, 0 Unknown, 0 Unchecked, 5.9s Time]
[2023-12-25 20:22:31,018 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 28151 states.
[2023-12-25 20:22:31,230 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 28151 to 26789.
[2023-12-25 20:22:31,252 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 26789 states, 26788 states have (on average 1.6573839032402569) internal successors, (44398), 26788 states have internal predecessors, (44398), 0 states have call successors, (0), 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 20:22:31,282 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 26789 states to 26789 states and 44398 transitions.
[2023-12-25 20:22:31,282 INFO  L78                 Accepts]: Start accepts. Automaton has 26789 states and 44398 transitions. Word has length 5051
[2023-12-25 20:22:31,284 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 20:22:31,284 INFO  L495      AbstractCegarLoop]: Abstraction has 26789 states and 44398 transitions.
[2023-12-25 20:22:31,285 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 8 states, 8 states have (on average 631.375) internal successors, (5051), 8 states have internal predecessors, (5051), 0 states have call successors, (0), 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 20:22:31,286 INFO  L276                IsEmpty]: Start isEmpty. Operand 26789 states and 44398 transitions.
[2023-12-25 20:22:31,489 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5052
[2023-12-25 20:22:31,490 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 20:22:31,491 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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[2023-12-25 20:22:31,560 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Forceful destruction successful, exit code 0
[2023-12-25 20:22:31,716 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 20:22:31,717 INFO  L420      AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 20:22:31,718 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 20:22:31,719 INFO  L85        PathProgramCache]: Analyzing trace with hash 697245669, now seen corresponding path program 1 times
[2023-12-25 20:22:31,719 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 20:22:31,719 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [348884445]
[2023-12-25 20:22:31,719 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 20:22:31,719 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 20:22:32,051 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 20:22:32,052 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1818442340]
[2023-12-25 20:22:32,053 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 20:22:32,053 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 20:22:32,053 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 20:22:32,054 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 20:22:32,056 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 20:22:36,985 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 20:22:37,118 INFO  L262         TraceCheckSpWp]: Trace formula consists of 20893 conjuncts, 10 conjunts are in the unsatisfiable core
[2023-12-25 20:22:37,168 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 20:22:44,703 INFO  L134       CoverageAnalysis]: Checked inductivity of 259 backedges. 259 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-25 20:22:44,703 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 20:22:44,703 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 20:22:44,703 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [348884445]
[2023-12-25 20:22:44,703 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 20:22:44,703 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1818442340]
[2023-12-25 20:22:44,703 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1818442340] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 20:22:44,703 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 20:22:44,704 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2023-12-25 20:22:44,704 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1929180773]
[2023-12-25 20:22:44,704 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 20:22:44,706 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2023-12-25 20:22:44,706 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 20:22:44,708 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2023-12-25 20:22:44,708 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30
[2023-12-25 20:22:44,709 INFO  L87              Difference]: Start difference. First operand 26789 states and 44398 transitions. Second operand  has 6 states, 6 states have (on average 841.8333333333334) internal successors, (5051), 6 states have internal predecessors, (5051), 0 states have call successors, (0), 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 20:22:50,193 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 20:22:50,193 INFO  L93              Difference]: Finished difference Result 55279 states and 91694 transitions.
[2023-12-25 20:22:50,193 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. 
[2023-12-25 20:22:50,195 INFO  L78                 Accepts]: Start accepts. Automaton has  has 6 states, 6 states have (on average 841.8333333333334) internal successors, (5051), 6 states have internal predecessors, (5051), 0 states have call successors, (0), 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 5051
[2023-12-25 20:22:50,198 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 20:22:50,230 INFO  L225             Difference]: With dead ends: 55279
[2023-12-25 20:22:50,230 INFO  L226             Difference]: Without dead ends: 32369
[2023-12-25 20:22:50,250 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5052 GetRequests, 5046 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56
[2023-12-25 20:22:50,250 INFO  L413           NwaCegarLoop]: 10807 mSDtfsCounter, 14198 mSDsluCounter, 31331 mSDsCounter, 0 mSdLazyCounter, 10360 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14198 SdHoareTripleChecker+Valid, 42138 SdHoareTripleChecker+Invalid, 10362 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10360 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time
[2023-12-25 20:22:50,250 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [14198 Valid, 42138 Invalid, 10362 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2 Valid, 10360 Invalid, 0 Unknown, 0 Unchecked, 5.1s Time]
[2023-12-25 20:22:50,271 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 32369 states.
[2023-12-25 20:22:50,493 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 32369 to 25325.
[2023-12-25 20:22:50,515 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 25325 states, 25324 states have (on average 1.6576370241667984) internal successors, (41978), 25324 states have internal predecessors, (41978), 0 states have call successors, (0), 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 20:22:50,544 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 25325 states to 25325 states and 41978 transitions.
[2023-12-25 20:22:50,544 INFO  L78                 Accepts]: Start accepts. Automaton has 25325 states and 41978 transitions. Word has length 5051
[2023-12-25 20:22:50,546 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 20:22:50,546 INFO  L495      AbstractCegarLoop]: Abstraction has 25325 states and 41978 transitions.
[2023-12-25 20:22:50,547 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 6 states, 6 states have (on average 841.8333333333334) internal successors, (5051), 6 states have internal predecessors, (5051), 0 states have call successors, (0), 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 20:22:50,547 INFO  L276                IsEmpty]: Start isEmpty. Operand 25325 states and 41978 transitions.
[2023-12-25 20:22:50,677 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5052
[2023-12-25 20:22:50,678 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 20:22:50,679 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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[2023-12-25 20:22:50,743 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 20:22:50,904 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 20:22:50,905 INFO  L420      AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 20:22:50,905 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 20:22:50,905 INFO  L85        PathProgramCache]: Analyzing trace with hash 542193315, now seen corresponding path program 1 times
[2023-12-25 20:22:50,905 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 20:22:50,905 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1196531547]
[2023-12-25 20:22:50,906 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 20:22:50,906 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 20:22:51,213 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 20:22:51,214 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [595994873]
[2023-12-25 20:22:51,215 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 20:22:51,215 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 20:22:51,215 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 20:22:51,216 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 20:22:51,216 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 20:22:56,068 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 20:22:56,187 INFO  L262         TraceCheckSpWp]: Trace formula consists of 20894 conjuncts, 11 conjunts are in the unsatisfiable core
[2023-12-25 20:22:56,231 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 20:23:03,081 INFO  L134       CoverageAnalysis]: Checked inductivity of 259 backedges. 259 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-25 20:23:03,081 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 20:23:03,081 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 20:23:03,082 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1196531547]
[2023-12-25 20:23:03,082 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 20:23:03,082 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [595994873]
[2023-12-25 20:23:03,082 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [595994873] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 20:23:03,082 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 20:23:03,082 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2023-12-25 20:23:03,082 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [895771475]
[2023-12-25 20:23:03,082 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 20:23:03,085 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2023-12-25 20:23:03,085 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 20:23:03,087 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2023-12-25 20:23:03,087 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30
[2023-12-25 20:23:03,088 INFO  L87              Difference]: Start difference. First operand 25325 states and 41978 transitions. Second operand  has 6 states, 6 states have (on average 841.8333333333334) internal successors, (5051), 6 states have internal predecessors, (5051), 0 states have call successors, (0), 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 20:23:08,542 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 20:23:08,543 INFO  L93              Difference]: Finished difference Result 52353 states and 86858 transitions.
[2023-12-25 20:23:08,543 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. 
[2023-12-25 20:23:08,544 INFO  L78                 Accepts]: Start accepts. Automaton has  has 6 states, 6 states have (on average 841.8333333333334) internal successors, (5051), 6 states have internal predecessors, (5051), 0 states have call successors, (0), 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 5051
[2023-12-25 20:23:08,547 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 20:23:08,571 INFO  L225             Difference]: With dead ends: 52353
[2023-12-25 20:23:08,572 INFO  L226             Difference]: Without dead ends: 30907
[2023-12-25 20:23:08,582 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5052 GetRequests, 5046 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56
[2023-12-25 20:23:08,582 INFO  L413           NwaCegarLoop]: 9747 mSDtfsCounter, 17986 mSDsluCounter, 29217 mSDsCounter, 0 mSdLazyCounter, 10111 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17986 SdHoareTripleChecker+Valid, 38964 SdHoareTripleChecker+Invalid, 10112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 10111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time
[2023-12-25 20:23:08,583 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [17986 Valid, 38964 Invalid, 10112 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 10111 Invalid, 0 Unknown, 0 Unchecked, 5.1s Time]
[2023-12-25 20:23:08,600 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 30907 states.
[2023-12-25 20:23:08,822 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 30907 to 29543.
[2023-12-25 20:23:08,848 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 29543 states, 29542 states have (on average 1.658858574233295) internal successors, (49006), 29542 states have internal predecessors, (49006), 0 states have call successors, (0), 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 20:23:08,883 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 29543 states to 29543 states and 49006 transitions.
[2023-12-25 20:23:08,883 INFO  L78                 Accepts]: Start accepts. Automaton has 29543 states and 49006 transitions. Word has length 5051
[2023-12-25 20:23:08,885 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 20:23:08,885 INFO  L495      AbstractCegarLoop]: Abstraction has 29543 states and 49006 transitions.
[2023-12-25 20:23:08,886 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 6 states, 6 states have (on average 841.8333333333334) internal successors, (5051), 6 states have internal predecessors, (5051), 0 states have call successors, (0), 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 20:23:08,886 INFO  L276                IsEmpty]: Start isEmpty. Operand 29543 states and 49006 transitions.
[2023-12-25 20:23:09,013 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5053
[2023-12-25 20:23:09,013 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 20:23:09,014 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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[2023-12-25 20:23:09,067 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 20:23:09,237 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 20:23:09,238 INFO  L420      AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 20:23:09,260 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 20:23:09,260 INFO  L85        PathProgramCache]: Analyzing trace with hash -403431085, now seen corresponding path program 1 times
[2023-12-25 20:23:09,261 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 20:23:09,261 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [387802585]
[2023-12-25 20:23:09,261 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 20:23:09,261 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 20:23:09,541 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 20:23:09,541 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1952775343]
[2023-12-25 20:23:09,542 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 20:23:09,542 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 20:23:09,542 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 20:23:09,543 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 20:23:09,545 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 20:23:14,058 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 20:23:14,189 INFO  L262         TraceCheckSpWp]: Trace formula consists of 20895 conjuncts, 15 conjunts are in the unsatisfiable core
[2023-12-25 20:23:14,239 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 20:23:22,537 INFO  L134       CoverageAnalysis]: Checked inductivity of 259 backedges. 259 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-25 20:23:22,537 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 20:23:22,537 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 20:23:22,537 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [387802585]
[2023-12-25 20:23:22,537 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 20:23:22,537 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1952775343]
[2023-12-25 20:23:22,537 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1952775343] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 20:23:22,537 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 20:23:22,538 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8
[2023-12-25 20:23:22,538 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1958876856]
[2023-12-25 20:23:22,538 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 20:23:22,540 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 8 states
[2023-12-25 20:23:22,541 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 20:23:22,543 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2023-12-25 20:23:22,543 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56
[2023-12-25 20:23:22,543 INFO  L87              Difference]: Start difference. First operand 29543 states and 49006 transitions. Second operand  has 8 states, 8 states have (on average 631.5) internal successors, (5052), 8 states have internal predecessors, (5052), 0 states have call successors, (0), 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 20:23:29,867 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 20:23:29,868 INFO  L93              Difference]: Finished difference Result 62251 states and 103326 transitions.
[2023-12-25 20:23:29,868 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. 
[2023-12-25 20:23:29,869 INFO  L78                 Accepts]: Start accepts. Automaton has  has 8 states, 8 states have (on average 631.5) internal successors, (5052), 8 states have internal predecessors, (5052), 0 states have call successors, (0), 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 5052
[2023-12-25 20:23:29,871 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 20:23:29,905 INFO  L225             Difference]: With dead ends: 62251
[2023-12-25 20:23:29,905 INFO  L226             Difference]: Without dead ends: 36587
[2023-12-25 20:23:29,926 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5053 GetRequests, 5045 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90
[2023-12-25 20:23:29,927 INFO  L413           NwaCegarLoop]: 10800 mSDtfsCounter, 17205 mSDsluCounter, 52897 mSDsCounter, 0 mSdLazyCounter, 15570 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17205 SdHoareTripleChecker+Valid, 63697 SdHoareTripleChecker+Invalid, 15572 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 15570 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.9s IncrementalHoareTripleChecker+Time
[2023-12-25 20:23:29,927 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [17205 Valid, 63697 Invalid, 15572 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2 Valid, 15570 Invalid, 0 Unknown, 0 Unchecked, 6.9s Time]
[2023-12-25 20:23:29,950 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 36587 states.
[2023-12-25 20:23:30,207 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 36587 to 35237.
[2023-12-25 20:23:30,236 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 35237 states, 35236 states have (on average 1.6593256896356) internal successors, (58468), 35236 states have internal predecessors, (58468), 0 states have call successors, (0), 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 20:23:30,273 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 35237 states to 35237 states and 58468 transitions.
[2023-12-25 20:23:30,273 INFO  L78                 Accepts]: Start accepts. Automaton has 35237 states and 58468 transitions. Word has length 5052
[2023-12-25 20:23:30,275 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 20:23:30,276 INFO  L495      AbstractCegarLoop]: Abstraction has 35237 states and 58468 transitions.
[2023-12-25 20:23:30,276 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 8 states, 8 states have (on average 631.5) internal successors, (5052), 8 states have internal predecessors, (5052), 0 states have call successors, (0), 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 20:23:30,276 INFO  L276                IsEmpty]: Start isEmpty. Operand 35237 states and 58468 transitions.
[2023-12-25 20:23:30,405 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5053
[2023-12-25 20:23:30,405 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 20:23:30,407 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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[2023-12-25 20:23:30,466 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 20:23:30,612 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 20:23:30,613 INFO  L420      AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 20:23:30,613 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 20:23:30,613 INFO  L85        PathProgramCache]: Analyzing trace with hash 314513, now seen corresponding path program 1 times
[2023-12-25 20:23:30,613 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 20:23:30,613 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1183607238]
[2023-12-25 20:23:30,614 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 20:23:30,614 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 20:23:30,889 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 20:23:30,889 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [368474922]
[2023-12-25 20:23:30,890 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 20:23:30,890 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 20:23:30,890 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 20:23:30,892 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 20:23:30,893 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 20:23:35,559 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 20:23:35,684 INFO  L262         TraceCheckSpWp]: Trace formula consists of 20896 conjuncts, 10 conjunts are in the unsatisfiable core
[2023-12-25 20:23:35,731 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 20:23:43,534 INFO  L134       CoverageAnalysis]: Checked inductivity of 259 backedges. 259 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-25 20:23:43,535 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 20:23:43,535 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 20:23:43,535 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1183607238]
[2023-12-25 20:23:43,535 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 20:23:43,535 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [368474922]
[2023-12-25 20:23:43,535 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [368474922] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 20:23:43,535 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 20:23:43,536 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2023-12-25 20:23:43,536 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [594860310]
[2023-12-25 20:23:43,536 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 20:23:43,539 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2023-12-25 20:23:43,540 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 20:23:43,542 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2023-12-25 20:23:43,542 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30
[2023-12-25 20:23:43,543 INFO  L87              Difference]: Start difference. First operand 35237 states and 58468 transitions. Second operand  has 6 states, 6 states have (on average 842.0) internal successors, (5052), 6 states have internal predecessors, (5052), 0 states have call successors, (0), 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 20:23:49,110 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 20:23:49,110 INFO  L93              Difference]: Finished difference Result 67957 states and 112804 transitions.
[2023-12-25 20:23:49,110 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. 
[2023-12-25 20:23:49,111 INFO  L78                 Accepts]: Start accepts. Automaton has  has 6 states, 6 states have (on average 842.0) internal successors, (5052), 6 states have internal predecessors, (5052), 0 states have call successors, (0), 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 5052
[2023-12-25 20:23:49,114 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 20:23:49,148 INFO  L225             Difference]: With dead ends: 67957
[2023-12-25 20:23:49,148 INFO  L226             Difference]: Without dead ends: 36599
[2023-12-25 20:23:49,172 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5053 GetRequests, 5047 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56
[2023-12-25 20:23:49,173 INFO  L413           NwaCegarLoop]: 10801 mSDtfsCounter, 14191 mSDsluCounter, 31320 mSDsCounter, 0 mSdLazyCounter, 10347 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14191 SdHoareTripleChecker+Valid, 42121 SdHoareTripleChecker+Invalid, 10349 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10347 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.3s IncrementalHoareTripleChecker+Time
[2023-12-25 20:23:49,176 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [14191 Valid, 42121 Invalid, 10349 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2 Valid, 10347 Invalid, 0 Unknown, 0 Unchecked, 5.3s Time]
[2023-12-25 20:23:49,198 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 36599 states.
[2023-12-25 20:23:49,446 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 36599 to 29555.
[2023-12-25 20:23:49,471 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 29555 states, 29554 states have (on average 1.658726399133789) internal successors, (49022), 29554 states have internal predecessors, (49022), 0 states have call successors, (0), 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 20:23:49,505 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 29555 states to 29555 states and 49022 transitions.
[2023-12-25 20:23:49,506 INFO  L78                 Accepts]: Start accepts. Automaton has 29555 states and 49022 transitions. Word has length 5052
[2023-12-25 20:23:49,508 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 20:23:49,508 INFO  L495      AbstractCegarLoop]: Abstraction has 29555 states and 49022 transitions.
[2023-12-25 20:23:49,509 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 6 states, 6 states have (on average 842.0) internal successors, (5052), 6 states have internal predecessors, (5052), 0 states have call successors, (0), 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 20:23:49,509 INFO  L276                IsEmpty]: Start isEmpty. Operand 29555 states and 49022 transitions.
[2023-12-25 20:23:49,637 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5053
[2023-12-25 20:23:49,638 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 20:23:49,639 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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[2023-12-25 20:23:49,695 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 20:23:49,854 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 20:23:49,854 INFO  L420      AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 20:23:49,854 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 20:23:49,855 INFO  L85        PathProgramCache]: Analyzing trace with hash -511341165, now seen corresponding path program 1 times
[2023-12-25 20:23:49,855 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 20:23:49,855 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1513948247]
[2023-12-25 20:23:49,855 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 20:23:49,855 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 20:23:50,280 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 20:23:50,280 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [677017288]
[2023-12-25 20:23:50,281 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 20:23:50,281 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 20:23:50,281 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 20:23:50,282 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 20:23:50,283 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 20:23:54,879 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 20:23:55,022 INFO  L262         TraceCheckSpWp]: Trace formula consists of 20897 conjuncts, 11 conjunts are in the unsatisfiable core
[2023-12-25 20:23:55,078 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 20:24:01,919 INFO  L134       CoverageAnalysis]: Checked inductivity of 259 backedges. 259 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-25 20:24:01,920 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 20:24:01,920 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 20:24:01,920 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1513948247]
[2023-12-25 20:24:01,920 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 20:24:01,920 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [677017288]
[2023-12-25 20:24:01,920 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [677017288] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 20:24:01,920 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 20:24:01,920 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2023-12-25 20:24:01,920 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [671351215]
[2023-12-25 20:24:01,921 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 20:24:01,923 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2023-12-25 20:24:01,923 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 20:24:01,925 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2023-12-25 20:24:01,925 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30
[2023-12-25 20:24:01,926 INFO  L87              Difference]: Start difference. First operand 29555 states and 49022 transitions. Second operand  has 6 states, 6 states have (on average 842.0) internal successors, (5052), 6 states have internal predecessors, (5052), 0 states have call successors, (0), 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 20:24:07,550 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 20:24:07,550 INFO  L93              Difference]: Finished difference Result 56595 states and 93916 transitions.
[2023-12-25 20:24:07,550 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. 
[2023-12-25 20:24:07,552 INFO  L78                 Accepts]: Start accepts. Automaton has  has 6 states, 6 states have (on average 842.0) internal successors, (5052), 6 states have internal predecessors, (5052), 0 states have call successors, (0), 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 5052
[2023-12-25 20:24:07,555 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 20:24:07,584 INFO  L225             Difference]: With dead ends: 56595
[2023-12-25 20:24:07,585 INFO  L226             Difference]: Without dead ends: 30919
[2023-12-25 20:24:07,603 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5053 GetRequests, 5047 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56
[2023-12-25 20:24:07,603 INFO  L413           NwaCegarLoop]: 9747 mSDtfsCounter, 17972 mSDsluCounter, 29217 mSDsCounter, 0 mSdLazyCounter, 10111 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17972 SdHoareTripleChecker+Valid, 38964 SdHoareTripleChecker+Invalid, 10112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 10111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.2s IncrementalHoareTripleChecker+Time
[2023-12-25 20:24:07,603 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [17972 Valid, 38964 Invalid, 10112 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 10111 Invalid, 0 Unknown, 0 Unchecked, 5.2s Time]
[2023-12-25 20:24:07,624 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 30919 states.
[2023-12-25 20:24:07,832 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 30919 to 29567.
[2023-12-25 20:24:07,856 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 29567 states, 29566 states have (on average 1.6586619765947372) internal successors, (49040), 29566 states have internal predecessors, (49040), 0 states have call successors, (0), 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 20:24:07,889 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 29567 states to 29567 states and 49040 transitions.
[2023-12-25 20:24:07,889 INFO  L78                 Accepts]: Start accepts. Automaton has 29567 states and 49040 transitions. Word has length 5052
[2023-12-25 20:24:07,891 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 20:24:07,891 INFO  L495      AbstractCegarLoop]: Abstraction has 29567 states and 49040 transitions.
[2023-12-25 20:24:07,892 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 6 states, 6 states have (on average 842.0) internal successors, (5052), 6 states have internal predecessors, (5052), 0 states have call successors, (0), 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 20:24:07,892 INFO  L276                IsEmpty]: Start isEmpty. Operand 29567 states and 49040 transitions.
[2023-12-25 20:24:08,020 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5054
[2023-12-25 20:24:08,020 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 20:24:08,022 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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[2023-12-25 20:24:08,081 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 20:24:08,222 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 20:24:08,223 INFO  L420      AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 20:24:08,223 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 20:24:08,223 INFO  L85        PathProgramCache]: Analyzing trace with hash -915934417, now seen corresponding path program 1 times
[2023-12-25 20:24:08,223 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 20:24:08,223 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [908356175]
[2023-12-25 20:24:08,224 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 20:24:08,224 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 20:24:08,523 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 20:24:08,523 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [605111408]
[2023-12-25 20:24:08,524 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 20:24:08,525 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 20:24:08,525 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 20:24:08,526 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 20:24:08,530 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 20:24:13,296 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 20:24:13,435 INFO  L262         TraceCheckSpWp]: Trace formula consists of 20898 conjuncts, 15 conjunts are in the unsatisfiable core
[2023-12-25 20:24:13,495 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 20:24:17,769 INFO  L134       CoverageAnalysis]: Checked inductivity of 259 backedges. 259 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-25 20:24:17,769 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 20:24:17,769 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 20:24:17,769 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [908356175]
[2023-12-25 20:24:17,769 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 20:24:17,769 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [605111408]
[2023-12-25 20:24:17,770 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [605111408] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 20:24:17,770 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 20:24:17,770 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2023-12-25 20:24:17,770 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [621732781]
[2023-12-25 20:24:17,770 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 20:24:17,772 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2023-12-25 20:24:17,772 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 20:24:17,774 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2023-12-25 20:24:17,774 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30
[2023-12-25 20:24:17,775 INFO  L87              Difference]: Start difference. First operand 29567 states and 49040 transitions. Second operand  has 6 states, 6 states have (on average 842.1666666666666) internal successors, (5053), 6 states have internal predecessors, (5053), 0 states have call successors, (0), 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 20:24:24,117 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 20:24:24,117 INFO  L93              Difference]: Finished difference Result 74262 states and 123279 transitions.
[2023-12-25 20:24:24,117 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. 
[2023-12-25 20:24:24,118 INFO  L78                 Accepts]: Start accepts. Automaton has  has 6 states, 6 states have (on average 842.1666666666666) internal successors, (5053), 6 states have internal predecessors, (5053), 0 states have call successors, (0), 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 5053
[2023-12-25 20:24:24,120 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 20:24:24,166 INFO  L225             Difference]: With dead ends: 74262
[2023-12-25 20:24:24,166 INFO  L226             Difference]: Without dead ends: 46435
[2023-12-25 20:24:24,197 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5053 GetRequests, 5048 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42
[2023-12-25 20:24:24,197 INFO  L413           NwaCegarLoop]: 14924 mSDtfsCounter, 21795 mSDsluCounter, 39547 mSDsCounter, 0 mSdLazyCounter, 12556 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21795 SdHoareTripleChecker+Valid, 54471 SdHoareTripleChecker+Invalid, 12557 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12556 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.9s IncrementalHoareTripleChecker+Time
[2023-12-25 20:24:24,197 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [21795 Valid, 54471 Invalid, 12557 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 12556 Invalid, 0 Unknown, 0 Unchecked, 5.9s Time]
[2023-12-25 20:24:24,228 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 46435 states.
[2023-12-25 20:24:24,519 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 46435 to 33701.
[2023-12-25 20:24:24,551 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 33701 states, 33700 states have (on average 1.6583679525222552) internal successors, (55887), 33700 states have internal predecessors, (55887), 0 states have call successors, (0), 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 20:24:24,588 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 33701 states to 33701 states and 55887 transitions.
[2023-12-25 20:24:24,588 INFO  L78                 Accepts]: Start accepts. Automaton has 33701 states and 55887 transitions. Word has length 5053
[2023-12-25 20:24:24,589 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 20:24:24,589 INFO  L495      AbstractCegarLoop]: Abstraction has 33701 states and 55887 transitions.
[2023-12-25 20:24:24,590 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 6 states, 6 states have (on average 842.1666666666666) internal successors, (5053), 6 states have internal predecessors, (5053), 0 states have call successors, (0), 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 20:24:24,590 INFO  L276                IsEmpty]: Start isEmpty. Operand 33701 states and 55887 transitions.
[2023-12-25 20:24:24,952 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5055
[2023-12-25 20:24:24,952 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 20:24:24,953 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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[2023-12-25 20:24:25,016 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 20:24:25,168 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 20:24:25,168 INFO  L420      AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 20:24:25,169 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 20:24:25,169 INFO  L85        PathProgramCache]: Analyzing trace with hash 980971540, now seen corresponding path program 1 times
[2023-12-25 20:24:25,169 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 20:24:25,170 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1145303618]
[2023-12-25 20:24:25,170 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 20:24:25,170 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 20:24:25,451 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 20:24:25,451 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [685794337]
[2023-12-25 20:24:25,452 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 20:24:25,452 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 20:24:25,452 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 20:24:25,453 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 20:24:25,455 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 20:24:30,408 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 20:24:30,546 INFO  L262         TraceCheckSpWp]: Trace formula consists of 20902 conjuncts, 38 conjunts are in the unsatisfiable core
[2023-12-25 20:24:30,597 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 20:24:40,765 INFO  L134       CoverageAnalysis]: Checked inductivity of 259 backedges. 259 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-25 20:24:40,766 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 20:24:40,766 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 20:24:40,766 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1145303618]
[2023-12-25 20:24:40,766 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 20:24:40,766 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [685794337]
[2023-12-25 20:24:40,766 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [685794337] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 20:24:40,766 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 20:24:40,766 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9
[2023-12-25 20:24:40,767 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1421121391]
[2023-12-25 20:24:40,767 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 20:24:40,769 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 10 states
[2023-12-25 20:24:40,769 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 20:24:40,771 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants.
[2023-12-25 20:24:40,771 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90
[2023-12-25 20:24:40,772 INFO  L87              Difference]: Start difference. First operand 33701 states and 55887 transitions. Second operand  has 10 states, 10 states have (on average 505.4) internal successors, (5054), 9 states have internal predecessors, (5054), 0 states have call successors, (0), 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 20:24:52,291 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 20:24:52,291 INFO  L93              Difference]: Finished difference Result 99360 states and 164824 transitions.
[2023-12-25 20:24:52,291 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. 
[2023-12-25 20:24:52,292 INFO  L78                 Accepts]: Start accepts. Automaton has  has 10 states, 10 states have (on average 505.4) internal successors, (5054), 9 states have internal predecessors, (5054), 0 states have call successors, (0), 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 5054
[2023-12-25 20:24:52,295 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 20:24:52,352 INFO  L225             Difference]: With dead ends: 99360
[2023-12-25 20:24:52,352 INFO  L226             Difference]: Without dead ends: 69538
[2023-12-25 20:24:52,361 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5061 GetRequests, 5045 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=81, Invalid=225, Unknown=0, NotChecked=0, Total=306
[2023-12-25 20:24:52,362 INFO  L413           NwaCegarLoop]: 19922 mSDtfsCounter, 43786 mSDsluCounter, 100304 mSDsCounter, 0 mSdLazyCounter, 27098 mSolverCounterSat, 126 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43786 SdHoareTripleChecker+Valid, 120226 SdHoareTripleChecker+Invalid, 27224 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 126 IncrementalHoareTripleChecker+Valid, 27098 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.4s IncrementalHoareTripleChecker+Time
[2023-12-25 20:24:52,362 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [43786 Valid, 120226 Invalid, 27224 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [126 Valid, 27098 Invalid, 0 Unknown, 0 Unchecked, 10.4s Time]
[2023-12-25 20:24:52,397 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 69538 states.
[2023-12-25 20:24:52,750 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 69538 to 39471.
[2023-12-25 20:24:52,784 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 39471 states, 39470 states have (on average 1.6589561692424626) internal successors, (65479), 39470 states have internal predecessors, (65479), 0 states have call successors, (0), 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 20:24:52,827 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 39471 states to 39471 states and 65479 transitions.
[2023-12-25 20:24:52,827 INFO  L78                 Accepts]: Start accepts. Automaton has 39471 states and 65479 transitions. Word has length 5054
[2023-12-25 20:24:52,830 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 20:24:52,830 INFO  L495      AbstractCegarLoop]: Abstraction has 39471 states and 65479 transitions.
[2023-12-25 20:24:52,830 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 10 states, 10 states have (on average 505.4) internal successors, (5054), 9 states have internal predecessors, (5054), 0 states have call successors, (0), 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 20:24:52,830 INFO  L276                IsEmpty]: Start isEmpty. Operand 39471 states and 65479 transitions.
[2023-12-25 20:24:53,118 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5055
[2023-12-25 20:24:53,119 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 20:24:53,120 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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[2023-12-25 20:24:53,250 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 20:24:53,321 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 20:24:53,321 INFO  L420      AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 20:24:53,321 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 20:24:53,322 INFO  L85        PathProgramCache]: Analyzing trace with hash -1374230314, now seen corresponding path program 1 times
[2023-12-25 20:24:53,322 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 20:24:53,322 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1124197066]
[2023-12-25 20:24:53,322 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 20:24:53,323 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 20:24:53,712 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 20:24:53,712 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1785493560]
[2023-12-25 20:24:53,713 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 20:24:53,713 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 20:24:53,713 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 20:24:53,714 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 20:24:53,718 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 20:24:59,137 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 20:24:59,295 INFO  L262         TraceCheckSpWp]: Trace formula consists of 20905 conjuncts, 61 conjunts are in the unsatisfiable core
[2023-12-25 20:24:59,355 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 20:25:09,556 INFO  L134       CoverageAnalysis]: Checked inductivity of 259 backedges. 259 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-25 20:25:09,556 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 20:25:09,556 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 20:25:09,556 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1124197066]
[2023-12-25 20:25:09,556 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 20:25:09,556 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1785493560]
[2023-12-25 20:25:09,556 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1785493560] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 20:25:09,556 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 20:25:09,557 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17
[2023-12-25 20:25:09,557 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [225288199]
[2023-12-25 20:25:09,557 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 20:25:09,559 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 18 states
[2023-12-25 20:25:09,559 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 20:25:09,561 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants.
[2023-12-25 20:25:09,561 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=232, Unknown=0, NotChecked=0, Total=306
[2023-12-25 20:25:09,562 INFO  L87              Difference]: Start difference. First operand 39471 states and 65479 transitions. Second operand  has 18 states, 18 states have (on average 280.77777777777777) internal successors, (5054), 17 states have internal predecessors, (5054), 0 states have call successors, (0), 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 20:25:31,639 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 20:25:31,639 INFO  L93              Difference]: Finished difference Result 105116 states and 174359 transitions.
[2023-12-25 20:25:31,639 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. 
[2023-12-25 20:25:31,641 INFO  L78                 Accepts]: Start accepts. Automaton has  has 18 states, 18 states have (on average 280.77777777777777) internal successors, (5054), 17 states have internal predecessors, (5054), 0 states have call successors, (0), 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 5054
[2023-12-25 20:25:31,642 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 20:25:31,829 INFO  L225             Difference]: With dead ends: 105116
[2023-12-25 20:25:31,829 INFO  L226             Difference]: Without dead ends: 69591
[2023-12-25 20:25:31,852 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5075 GetRequests, 5037 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 312 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=336, Invalid=1224, Unknown=0, NotChecked=0, Total=1560
[2023-12-25 20:25:31,857 INFO  L413           NwaCegarLoop]: 9686 mSDtfsCounter, 170384 mSDsluCounter, 128771 mSDsCounter, 0 mSdLazyCounter, 43543 mSolverCounterSat, 249 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 170384 SdHoareTripleChecker+Valid, 138457 SdHoareTripleChecker+Invalid, 43792 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.4s SdHoareTripleChecker+Time, 249 IncrementalHoareTripleChecker+Valid, 43543 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 19.9s IncrementalHoareTripleChecker+Time
[2023-12-25 20:25:31,858 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [170384 Valid, 138457 Invalid, 43792 Unknown, 0 Unchecked, 0.4s Time], IncrementalHoareTripleChecker [249 Valid, 43543 Invalid, 0 Unknown, 0 Unchecked, 19.9s Time]
[2023-12-25 20:25:31,904 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 69591 states.
[2023-12-25 20:25:32,264 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 69591 to 39471.
[2023-12-25 20:25:32,296 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 39471 states, 39470 states have (on average 1.6589054978464657) internal successors, (65477), 39470 states have internal predecessors, (65477), 0 states have call successors, (0), 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 20:25:32,342 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 39471 states to 39471 states and 65477 transitions.
[2023-12-25 20:25:32,342 INFO  L78                 Accepts]: Start accepts. Automaton has 39471 states and 65477 transitions. Word has length 5054
[2023-12-25 20:25:32,344 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 20:25:32,345 INFO  L495      AbstractCegarLoop]: Abstraction has 39471 states and 65477 transitions.
[2023-12-25 20:25:32,346 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 18 states, 18 states have (on average 280.77777777777777) internal successors, (5054), 17 states have internal predecessors, (5054), 0 states have call successors, (0), 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 20:25:32,346 INFO  L276                IsEmpty]: Start isEmpty. Operand 39471 states and 65477 transitions.
[2023-12-25 20:25:32,497 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5056
[2023-12-25 20:25:32,497 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 20:25:32,498 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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[2023-12-25 20:25:32,579 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Forceful destruction successful, exit code 0
[2023-12-25 20:25:32,717 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 20:25:32,718 INFO  L420      AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 20:25:32,718 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 20:25:32,718 INFO  L85        PathProgramCache]: Analyzing trace with hash -1742638680, now seen corresponding path program 1 times
[2023-12-25 20:25:32,718 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 20:25:32,719 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1034603662]
[2023-12-25 20:25:32,719 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 20:25:32,719 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 20:25:33,275 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 20:25:33,275 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [790197029]
[2023-12-25 20:25:33,276 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 20:25:33,276 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 20:25:33,276 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 20:25:33,293 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 20:25:33,307 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 20:25:38,387 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 20:25:38,513 INFO  L262         TraceCheckSpWp]: Trace formula consists of 20908 conjuncts, 7 conjunts are in the unsatisfiable core
[2023-12-25 20:25:38,557 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 20:25:40,706 INFO  L134       CoverageAnalysis]: Checked inductivity of 259 backedges. 259 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-25 20:25:40,706 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 20:25:40,706 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 20:25:40,706 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1034603662]
[2023-12-25 20:25:40,706 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 20:25:40,706 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [790197029]
[2023-12-25 20:25:40,706 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [790197029] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 20:25:40,706 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 20:25:40,707 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2023-12-25 20:25:40,707 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1566537521]
[2023-12-25 20:25:40,707 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 20:25:40,709 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2023-12-25 20:25:40,709 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 20:25:40,711 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2023-12-25 20:25:40,711 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30
[2023-12-25 20:25:40,712 INFO  L87              Difference]: Start difference. First operand 39471 states and 65477 transitions. Second operand  has 6 states, 6 states have (on average 842.5) internal successors, (5055), 6 states have internal predecessors, (5055), 0 states have call successors, (0), 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 20:25:45,971 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 20:25:45,971 INFO  L93              Difference]: Finished difference Result 105224 states and 174665 transitions.
[2023-12-25 20:25:45,971 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. 
[2023-12-25 20:25:45,972 INFO  L78                 Accepts]: Start accepts. Automaton has  has 6 states, 6 states have (on average 842.5) internal successors, (5055), 6 states have internal predecessors, (5055), 0 states have call successors, (0), 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 5055
[2023-12-25 20:25:45,974 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 20:25:46,043 INFO  L225             Difference]: With dead ends: 105224
[2023-12-25 20:25:46,043 INFO  L226             Difference]: Without dead ends: 67193
[2023-12-25 20:25:46,078 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5057 GetRequests, 5050 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72
[2023-12-25 20:25:46,078 INFO  L413           NwaCegarLoop]: 14856 mSDtfsCounter, 24194 mSDsluCounter, 39430 mSDsCounter, 0 mSdLazyCounter, 12405 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24194 SdHoareTripleChecker+Valid, 54286 SdHoareTripleChecker+Invalid, 12406 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12405 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time
[2023-12-25 20:25:46,078 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [24194 Valid, 54286 Invalid, 12406 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 12405 Invalid, 0 Unknown, 0 Unchecked, 4.8s Time]
[2023-12-25 20:25:46,121 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 67193 states.
[2023-12-25 20:25:46,522 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 67193 to 48749.
[2023-12-25 20:25:46,563 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 48749 states, 48748 states have (on average 1.6585295807007467) internal successors, (80850), 48748 states have internal predecessors, (80850), 0 states have call successors, (0), 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 20:25:46,823 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 48749 states to 48749 states and 80850 transitions.
[2023-12-25 20:25:46,824 INFO  L78                 Accepts]: Start accepts. Automaton has 48749 states and 80850 transitions. Word has length 5055
[2023-12-25 20:25:46,824 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 20:25:46,824 INFO  L495      AbstractCegarLoop]: Abstraction has 48749 states and 80850 transitions.
[2023-12-25 20:25:46,825 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 6 states, 6 states have (on average 842.5) internal successors, (5055), 6 states have internal predecessors, (5055), 0 states have call successors, (0), 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 20:25:46,825 INFO  L276                IsEmpty]: Start isEmpty. Operand 48749 states and 80850 transitions.
[2023-12-25 20:25:47,100 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5057
[2023-12-25 20:25:47,100 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 20:25:47,101 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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[2023-12-25 20:25:47,164 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 20:25:47,324 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 20:25:47,325 INFO  L420      AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 20:25:47,325 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 20:25:47,325 INFO  L85        PathProgramCache]: Analyzing trace with hash -1542276315, now seen corresponding path program 1 times
[2023-12-25 20:25:47,326 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 20:25:47,326 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [334662527]
[2023-12-25 20:25:47,326 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 20:25:47,326 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 20:25:47,653 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 20:25:47,653 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [492032985]
[2023-12-25 20:25:47,654 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 20:25:47,654 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 20:25:47,654 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 20:25:47,655 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 20:25:47,657 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 20:25:52,569 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 20:25:52,699 INFO  L262         TraceCheckSpWp]: Trace formula consists of 20912 conjuncts, 9 conjunts are in the unsatisfiable core
[2023-12-25 20:25:52,800 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 20:25:54,667 INFO  L134       CoverageAnalysis]: Checked inductivity of 259 backedges. 259 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-25 20:25:54,667 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 20:25:54,667 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 20:25:54,667 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [334662527]
[2023-12-25 20:25:54,667 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 20:25:54,667 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [492032985]
[2023-12-25 20:25:54,667 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [492032985] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 20:25:54,667 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 20:25:54,668 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2023-12-25 20:25:54,668 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [936627578]
[2023-12-25 20:25:54,668 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 20:25:54,670 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2023-12-25 20:25:54,670 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 20:25:54,672 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2023-12-25 20:25:54,672 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30
[2023-12-25 20:25:54,673 INFO  L87              Difference]: Start difference. First operand 48749 states and 80850 transitions. Second operand  has 6 states, 6 states have (on average 842.6666666666666) internal successors, (5056), 6 states have internal predecessors, (5056), 0 states have call successors, (0), 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 20:25:59,308 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 20:25:59,308 INFO  L93              Difference]: Finished difference Result 111960 states and 185822 transitions.
[2023-12-25 20:25:59,308 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. 
[2023-12-25 20:25:59,309 INFO  L78                 Accepts]: Start accepts. Automaton has  has 6 states, 6 states have (on average 842.6666666666666) internal successors, (5056), 6 states have internal predecessors, (5056), 0 states have call successors, (0), 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 5056
[2023-12-25 20:25:59,311 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 20:25:59,367 INFO  L225             Difference]: With dead ends: 111960
[2023-12-25 20:25:59,367 INFO  L226             Difference]: Without dead ends: 67193
[2023-12-25 20:25:59,391 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5057 GetRequests, 5051 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56
[2023-12-25 20:25:59,391 INFO  L413           NwaCegarLoop]: 9748 mSDtfsCounter, 21962 mSDsluCounter, 29224 mSDsCounter, 0 mSdLazyCounter, 10127 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21962 SdHoareTripleChecker+Valid, 38972 SdHoareTripleChecker+Invalid, 10128 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 10127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time
[2023-12-25 20:25:59,392 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [21962 Valid, 38972 Invalid, 10128 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 10127 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time]
[2023-12-25 20:25:59,428 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 67193 states.
[2023-12-25 20:25:59,892 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 67193 to 48849.
[2023-12-25 20:25:59,927 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 48849 states, 48848 states have (on average 1.6582050442188012) internal successors, (81000), 48848 states have internal predecessors, (81000), 0 states have call successors, (0), 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 20:25:59,976 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 48849 states to 48849 states and 81000 transitions.
[2023-12-25 20:25:59,976 INFO  L78                 Accepts]: Start accepts. Automaton has 48849 states and 81000 transitions. Word has length 5056
[2023-12-25 20:25:59,977 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 20:25:59,977 INFO  L495      AbstractCegarLoop]: Abstraction has 48849 states and 81000 transitions.
[2023-12-25 20:25:59,978 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 6 states, 6 states have (on average 842.6666666666666) internal successors, (5056), 6 states have internal predecessors, (5056), 0 states have call successors, (0), 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 20:25:59,978 INFO  L276                IsEmpty]: Start isEmpty. Operand 48849 states and 81000 transitions.
[2023-12-25 20:26:00,106 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5058
[2023-12-25 20:26:00,106 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 20:26:00,107 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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[2023-12-25 20:26:00,165 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 20:26:00,316 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 20:26:00,317 INFO  L420      AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 20:26:00,317 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 20:26:00,318 INFO  L85        PathProgramCache]: Analyzing trace with hash 539718309, now seen corresponding path program 1 times
[2023-12-25 20:26:00,318 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 20:26:00,318 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1126653894]
[2023-12-25 20:26:00,318 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 20:26:00,318 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 20:26:00,824 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 20:26:00,824 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1909321634]
[2023-12-25 20:26:00,825 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 20:26:00,825 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 20:26:00,825 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 20:26:00,826 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 20:26:00,827 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 20:26:06,050 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 20:26:06,197 INFO  L262         TraceCheckSpWp]: Trace formula consists of 20915 conjuncts, 9 conjunts are in the unsatisfiable core
[2023-12-25 20:26:06,251 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 20:26:08,425 INFO  L134       CoverageAnalysis]: Checked inductivity of 259 backedges. 259 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-25 20:26:08,425 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 20:26:08,425 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 20:26:08,425 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1126653894]
[2023-12-25 20:26:08,425 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 20:26:08,425 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1909321634]
[2023-12-25 20:26:08,425 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1909321634] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 20:26:08,425 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 20:26:08,426 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2023-12-25 20:26:08,426 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2129553063]
[2023-12-25 20:26:08,431 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 20:26:08,434 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2023-12-25 20:26:08,434 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 20:26:08,436 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2023-12-25 20:26:08,436 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30
[2023-12-25 20:26:08,436 INFO  L87              Difference]: Start difference. First operand 48849 states and 81000 transitions. Second operand  has 6 states, 6 states have (on average 842.8333333333334) internal successors, (5057), 6 states have internal predecessors, (5057), 0 states have call successors, (0), 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 20:26:14,087 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 20:26:14,087 INFO  L93              Difference]: Finished difference Result 112024 states and 185906 transitions.
[2023-12-25 20:26:14,087 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. 
[2023-12-25 20:26:14,088 INFO  L78                 Accepts]: Start accepts. Automaton has  has 6 states, 6 states have (on average 842.8333333333334) internal successors, (5057), 6 states have internal predecessors, (5057), 0 states have call successors, (0), 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 5057
[2023-12-25 20:26:14,090 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 20:26:14,157 INFO  L225             Difference]: With dead ends: 112024
[2023-12-25 20:26:14,157 INFO  L226             Difference]: Without dead ends: 67193
[2023-12-25 20:26:14,195 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5058 GetRequests, 5052 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56
[2023-12-25 20:26:14,196 INFO  L413           NwaCegarLoop]: 9748 mSDtfsCounter, 21934 mSDsluCounter, 29224 mSDsCounter, 0 mSdLazyCounter, 10127 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21934 SdHoareTripleChecker+Valid, 38972 SdHoareTripleChecker+Invalid, 10128 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 10127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.2s IncrementalHoareTripleChecker+Time
[2023-12-25 20:26:14,196 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [21934 Valid, 38972 Invalid, 10128 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 10127 Invalid, 0 Unknown, 0 Unchecked, 5.2s Time]
[2023-12-25 20:26:14,338 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 67193 states.
[2023-12-25 20:26:14,702 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 67193 to 48957.
[2023-12-25 20:26:14,740 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 48957 states, 48956 states have (on average 1.6580602990440396) internal successors, (81172), 48956 states have internal predecessors, (81172), 0 states have call successors, (0), 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 20:26:14,791 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 48957 states to 48957 states and 81172 transitions.
[2023-12-25 20:26:14,792 INFO  L78                 Accepts]: Start accepts. Automaton has 48957 states and 81172 transitions. Word has length 5057
[2023-12-25 20:26:14,793 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 20:26:14,793 INFO  L495      AbstractCegarLoop]: Abstraction has 48957 states and 81172 transitions.
[2023-12-25 20:26:14,794 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 6 states, 6 states have (on average 842.8333333333334) internal successors, (5057), 6 states have internal predecessors, (5057), 0 states have call successors, (0), 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 20:26:14,794 INFO  L276                IsEmpty]: Start isEmpty. Operand 48957 states and 81172 transitions.
[2023-12-25 20:26:15,157 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5059
[2023-12-25 20:26:15,157 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 20:26:15,158 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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[2023-12-25 20:26:15,217 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Forceful destruction successful, exit code 0
[2023-12-25 20:26:15,372 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 20:26:15,373 INFO  L420      AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 20:26:15,373 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 20:26:15,373 INFO  L85        PathProgramCache]: Analyzing trace with hash 525762497, now seen corresponding path program 1 times
[2023-12-25 20:26:15,373 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 20:26:15,373 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [129204984]
[2023-12-25 20:26:15,374 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 20:26:15,374 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 20:26:15,659 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 20:26:15,660 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1511172772]
[2023-12-25 20:26:15,661 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 20:26:15,661 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 20:26:15,661 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 20:26:15,662 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 20:26:15,664 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 20:26:20,410 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 20:26:20,544 INFO  L262         TraceCheckSpWp]: Trace formula consists of 20918 conjuncts, 9 conjunts are in the unsatisfiable core
[2023-12-25 20:26:20,593 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 20:26:22,332 INFO  L134       CoverageAnalysis]: Checked inductivity of 259 backedges. 259 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-25 20:26:22,333 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 20:26:22,333 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 20:26:22,333 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [129204984]
[2023-12-25 20:26:22,333 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 20:26:22,333 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1511172772]
[2023-12-25 20:26:22,333 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1511172772] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 20:26:22,333 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 20:26:22,333 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2023-12-25 20:26:22,334 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1390503345]
[2023-12-25 20:26:22,334 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 20:26:22,336 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2023-12-25 20:26:22,336 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 20:26:22,338 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2023-12-25 20:26:22,338 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30
[2023-12-25 20:26:22,338 INFO  L87              Difference]: Start difference. First operand 48957 states and 81172 transitions. Second operand  has 6 states, 6 states have (on average 843.0) internal successors, (5058), 6 states have internal predecessors, (5058), 0 states have call successors, (0), 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 20:26:26,903 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 20:26:26,903 INFO  L93              Difference]: Finished difference Result 112096 states and 186012 transitions.
[2023-12-25 20:26:26,903 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. 
[2023-12-25 20:26:26,905 INFO  L78                 Accepts]: Start accepts. Automaton has  has 6 states, 6 states have (on average 843.0) internal successors, (5058), 6 states have internal predecessors, (5058), 0 states have call successors, (0), 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 5058
[2023-12-25 20:26:26,906 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 20:26:26,962 INFO  L225             Difference]: With dead ends: 112096
[2023-12-25 20:26:26,963 INFO  L226             Difference]: Without dead ends: 67193
[2023-12-25 20:26:26,987 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5059 GetRequests, 5053 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56
[2023-12-25 20:26:26,987 INFO  L413           NwaCegarLoop]: 9748 mSDtfsCounter, 16074 mSDsluCounter, 29224 mSDsCounter, 0 mSdLazyCounter, 10127 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16074 SdHoareTripleChecker+Valid, 38972 SdHoareTripleChecker+Invalid, 10128 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 10127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time
[2023-12-25 20:26:26,988 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [16074 Valid, 38972 Invalid, 10128 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 10127 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time]
[2023-12-25 20:26:27,027 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 67193 states.
[2023-12-25 20:26:27,580 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 67193 to 49065.
[2023-12-25 20:26:27,612 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 49065 states, 49064 states have (on average 1.6579161910973423) internal successors, (81344), 49064 states have internal predecessors, (81344), 0 states have call successors, (0), 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 20:26:27,657 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 49065 states to 49065 states and 81344 transitions.
[2023-12-25 20:26:27,657 INFO  L78                 Accepts]: Start accepts. Automaton has 49065 states and 81344 transitions. Word has length 5058
[2023-12-25 20:26:27,659 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 20:26:27,659 INFO  L495      AbstractCegarLoop]: Abstraction has 49065 states and 81344 transitions.
[2023-12-25 20:26:27,659 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 6 states, 6 states have (on average 843.0) internal successors, (5058), 6 states have internal predecessors, (5058), 0 states have call successors, (0), 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 20:26:27,660 INFO  L276                IsEmpty]: Start isEmpty. Operand 49065 states and 81344 transitions.
[2023-12-25 20:26:27,917 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5060
[2023-12-25 20:26:27,917 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 20:26:27,918 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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[2023-12-25 20:26:27,982 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 20:26:28,130 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 20:26:28,131 INFO  L420      AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 20:26:28,131 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 20:26:28,132 INFO  L85        PathProgramCache]: Analyzing trace with hash -943786815, now seen corresponding path program 1 times
[2023-12-25 20:26:28,132 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 20:26:28,132 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2002894685]
[2023-12-25 20:26:28,132 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 20:26:28,132 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 20:26:28,446 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 20:26:28,446 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1735535874]
[2023-12-25 20:26:28,447 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 20:26:28,447 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 20:26:28,447 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 20:26:28,448 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 20:26:28,449 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 20:26:33,242 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 20:26:33,369 INFO  L262         TraceCheckSpWp]: Trace formula consists of 20921 conjuncts, 9 conjunts are in the unsatisfiable core
[2023-12-25 20:26:33,420 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 20:26:39,973 INFO  L134       CoverageAnalysis]: Checked inductivity of 259 backedges. 259 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-25 20:26:39,973 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 20:26:39,973 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 20:26:39,973 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2002894685]
[2023-12-25 20:26:39,973 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 20:26:39,973 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1735535874]
[2023-12-25 20:26:39,973 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1735535874] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 20:26:39,974 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 20:26:39,974 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2023-12-25 20:26:39,974 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1131878342]
[2023-12-25 20:26:39,974 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 20:26:39,976 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2023-12-25 20:26:39,976 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 20:26:39,978 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2023-12-25 20:26:39,978 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30
[2023-12-25 20:26:39,979 INFO  L87              Difference]: Start difference. First operand 49065 states and 81344 transitions. Second operand  has 6 states, 6 states have (on average 843.1666666666666) internal successors, (5059), 6 states have internal predecessors, (5059), 0 states have call successors, (0), 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 20:26:45,104 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 20:26:45,104 INFO  L93              Difference]: Finished difference Result 106852 states and 177273 transitions.
[2023-12-25 20:26:45,104 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. 
[2023-12-25 20:26:45,105 INFO  L78                 Accepts]: Start accepts. Automaton has  has 6 states, 6 states have (on average 843.1666666666666) internal successors, (5059), 6 states have internal predecessors, (5059), 0 states have call successors, (0), 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 5059
[2023-12-25 20:26:45,108 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 20:26:45,173 INFO  L225             Difference]: With dead ends: 106852
[2023-12-25 20:26:45,173 INFO  L226             Difference]: Without dead ends: 67193
[2023-12-25 20:26:45,210 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5060 GetRequests, 5054 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56
[2023-12-25 20:26:45,210 INFO  L413           NwaCegarLoop]: 9748 mSDtfsCounter, 14284 mSDsluCounter, 29224 mSDsCounter, 0 mSdLazyCounter, 10127 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14284 SdHoareTripleChecker+Valid, 38972 SdHoareTripleChecker+Invalid, 10128 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 10127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time
[2023-12-25 20:26:45,210 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [14284 Valid, 38972 Invalid, 10128 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 10127 Invalid, 0 Unknown, 0 Unchecked, 4.7s Time]
[2023-12-25 20:26:45,258 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 67193 states.
[2023-12-25 20:26:46,037 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 67193 to 65119.
[2023-12-25 20:26:46,084 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 65119 states, 65118 states have (on average 1.6594797137504222) internal successors, (108062), 65118 states have internal predecessors, (108062), 0 states have call successors, (0), 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 20:26:46,162 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 65119 states to 65119 states and 108062 transitions.
[2023-12-25 20:26:46,162 INFO  L78                 Accepts]: Start accepts. Automaton has 65119 states and 108062 transitions. Word has length 5059
[2023-12-25 20:26:46,164 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 20:26:46,164 INFO  L495      AbstractCegarLoop]: Abstraction has 65119 states and 108062 transitions.
[2023-12-25 20:26:46,165 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 6 states, 6 states have (on average 843.1666666666666) internal successors, (5059), 6 states have internal predecessors, (5059), 0 states have call successors, (0), 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 20:26:46,165 INFO  L276                IsEmpty]: Start isEmpty. Operand 65119 states and 108062 transitions.
[2023-12-25 20:26:46,406 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5061
[2023-12-25 20:26:46,406 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 20:26:46,407 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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[2023-12-25 20:26:46,471 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 20:26:46,620 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 20:26:46,621 INFO  L420      AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 20:26:46,621 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 20:26:46,622 INFO  L85        PathProgramCache]: Analyzing trace with hash 2052559213, now seen corresponding path program 1 times
[2023-12-25 20:26:46,622 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 20:26:46,622 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [935331438]
[2023-12-25 20:26:46,622 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 20:26:46,622 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 20:26:47,013 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 20:26:47,013 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1389707044]
[2023-12-25 20:26:47,014 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 20:26:47,014 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 20:26:47,014 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 20:26:47,030 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 20:26:47,049 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 20:26:51,922 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 20:26:52,057 INFO  L262         TraceCheckSpWp]: Trace formula consists of 20924 conjuncts, 9 conjunts are in the unsatisfiable core
[2023-12-25 20:26:52,108 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 20:26:58,087 INFO  L134       CoverageAnalysis]: Checked inductivity of 259 backedges. 259 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-25 20:26:58,087 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 20:26:58,087 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 20:26:58,087 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [935331438]
[2023-12-25 20:26:58,087 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 20:26:58,087 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1389707044]
[2023-12-25 20:26:58,087 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1389707044] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 20:26:58,087 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 20:26:58,088 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2023-12-25 20:26:58,088 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [408953146]
[2023-12-25 20:26:58,088 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 20:26:58,090 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2023-12-25 20:26:58,090 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 20:26:58,093 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2023-12-25 20:26:58,093 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30
[2023-12-25 20:26:58,093 INFO  L87              Difference]: Start difference. First operand 65119 states and 108062 transitions. Second operand  has 6 states, 6 states have (on average 843.3333333333334) internal successors, (5060), 6 states have internal predecessors, (5060), 0 states have call successors, (0), 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 20:27:04,269 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 20:27:04,270 INFO  L93              Difference]: Finished difference Result 122894 states and 203965 transitions.
[2023-12-25 20:27:04,270 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. 
[2023-12-25 20:27:04,271 INFO  L78                 Accepts]: Start accepts. Automaton has  has 6 states, 6 states have (on average 843.3333333333334) internal successors, (5060), 6 states have internal predecessors, (5060), 0 states have call successors, (0), 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 5060
[2023-12-25 20:27:04,274 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 20:27:04,333 INFO  L225             Difference]: With dead ends: 122894
[2023-12-25 20:27:04,333 INFO  L226             Difference]: Without dead ends: 67193
[2023-12-25 20:27:04,353 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5061 GetRequests, 5055 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56
[2023-12-25 20:27:04,354 INFO  L413           NwaCegarLoop]: 9748 mSDtfsCounter, 14277 mSDsluCounter, 29224 mSDsCounter, 0 mSdLazyCounter, 10127 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14277 SdHoareTripleChecker+Valid, 38972 SdHoareTripleChecker+Invalid, 10128 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 10127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.7s IncrementalHoareTripleChecker+Time
[2023-12-25 20:27:04,354 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [14277 Valid, 38972 Invalid, 10128 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 10127 Invalid, 0 Unknown, 0 Unchecked, 5.7s Time]
[2023-12-25 20:27:04,388 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 67193 states.
[2023-12-25 20:27:04,840 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 67193 to 65155.
[2023-12-25 20:27:04,891 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 65155 states, 65154 states have (on average 1.6593608987936275) internal successors, (108114), 65154 states have internal predecessors, (108114), 0 states have call successors, (0), 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 20:27:04,963 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 65155 states to 65155 states and 108114 transitions.
[2023-12-25 20:27:04,963 INFO  L78                 Accepts]: Start accepts. Automaton has 65155 states and 108114 transitions. Word has length 5060
[2023-12-25 20:27:04,965 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 20:27:04,965 INFO  L495      AbstractCegarLoop]: Abstraction has 65155 states and 108114 transitions.
[2023-12-25 20:27:04,966 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 6 states, 6 states have (on average 843.3333333333334) internal successors, (5060), 6 states have internal predecessors, (5060), 0 states have call successors, (0), 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 20:27:04,966 INFO  L276                IsEmpty]: Start isEmpty. Operand 65155 states and 108114 transitions.
[2023-12-25 20:27:05,378 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5062
[2023-12-25 20:27:05,378 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 20:27:05,379 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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[2023-12-25 20:27:05,437 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Forceful destruction successful, exit code 0
[2023-12-25 20:27:05,592 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 20:27:05,593 INFO  L420      AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 20:27:05,593 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 20:27:05,593 INFO  L85        PathProgramCache]: Analyzing trace with hash 449851277, now seen corresponding path program 1 times
[2023-12-25 20:27:05,593 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 20:27:05,593 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [572757149]
[2023-12-25 20:27:05,796 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 20:27:05,797 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 20:27:06,122 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 20:27:06,122 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [395580559]
[2023-12-25 20:27:06,123 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 20:27:06,123 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 20:27:06,123 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 20:27:06,124 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 20:27:06,126 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 20:27:11,222 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 20:27:11,364 INFO  L262         TraceCheckSpWp]: Trace formula consists of 20927 conjuncts, 42 conjunts are in the unsatisfiable core
[2023-12-25 20:27:11,418 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 20:27:19,254 INFO  L134       CoverageAnalysis]: Checked inductivity of 259 backedges. 259 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-25 20:27:19,254 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 20:27:19,254 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 20:27:19,254 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [572757149]
[2023-12-25 20:27:19,254 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 20:27:19,254 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [395580559]
[2023-12-25 20:27:19,255 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [395580559] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 20:27:19,255 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 20:27:19,255 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9
[2023-12-25 20:27:19,255 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1144926658]
[2023-12-25 20:27:19,255 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 20:27:19,258 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 10 states
[2023-12-25 20:27:19,258 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 20:27:19,260 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants.
[2023-12-25 20:27:19,260 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90
[2023-12-25 20:27:19,260 INFO  L87              Difference]: Start difference. First operand 65155 states and 108114 transitions. Second operand  has 10 states, 10 states have (on average 506.1) internal successors, (5061), 9 states have internal predecessors, (5061), 0 states have call successors, (0), 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 20:27:27,669 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 20:27:27,669 INFO  L93              Difference]: Finished difference Result 176183 states and 292364 transitions.
[2023-12-25 20:27:27,669 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. 
[2023-12-25 20:27:27,670 INFO  L78                 Accepts]: Start accepts. Automaton has  has 10 states, 10 states have (on average 506.1) internal successors, (5061), 9 states have internal predecessors, (5061), 0 states have call successors, (0), 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 5061
[2023-12-25 20:27:27,673 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 20:27:27,762 INFO  L225             Difference]: With dead ends: 176183
[2023-12-25 20:27:27,762 INFO  L226             Difference]: Without dead ends: 120452
[2023-12-25 20:27:27,775 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5068 GetRequests, 5052 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=81, Invalid=225, Unknown=0, NotChecked=0, Total=306
[2023-12-25 20:27:27,775 INFO  L413           NwaCegarLoop]: 19926 mSDtfsCounter, 51612 mSDsluCounter, 74304 mSDsCounter, 0 mSdLazyCounter, 20415 mSolverCounterSat, 126 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51612 SdHoareTripleChecker+Valid, 94230 SdHoareTripleChecker+Invalid, 20541 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 126 IncrementalHoareTripleChecker+Valid, 20415 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.3s IncrementalHoareTripleChecker+Time
[2023-12-25 20:27:27,775 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [51612 Valid, 94230 Invalid, 20541 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [126 Valid, 20415 Invalid, 0 Unknown, 0 Unchecked, 7.3s Time]
[2023-12-25 20:27:27,833 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 120452 states.
[2023-12-25 20:27:28,536 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 120452 to 65161.
[2023-12-25 20:27:28,583 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 65161 states, 65160 states have (on average 1.6593001841620627) internal successors, (108120), 65160 states have internal predecessors, (108120), 0 states have call successors, (0), 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 20:27:28,651 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 65161 states to 65161 states and 108120 transitions.
[2023-12-25 20:27:28,651 INFO  L78                 Accepts]: Start accepts. Automaton has 65161 states and 108120 transitions. Word has length 5061
[2023-12-25 20:27:28,654 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 20:27:28,654 INFO  L495      AbstractCegarLoop]: Abstraction has 65161 states and 108120 transitions.
[2023-12-25 20:27:28,654 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 10 states, 10 states have (on average 506.1) internal successors, (5061), 9 states have internal predecessors, (5061), 0 states have call successors, (0), 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 20:27:28,654 INFO  L276                IsEmpty]: Start isEmpty. Operand 65161 states and 108120 transitions.
[2023-12-25 20:27:28,933 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5062
[2023-12-25 20:27:28,933 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 20:27:28,935 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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[2023-12-25 20:27:29,010 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 20:27:29,160 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 20:27:29,160 INFO  L420      AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 20:27:29,161 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 20:27:29,161 INFO  L85        PathProgramCache]: Analyzing trace with hash -1026191089, now seen corresponding path program 1 times
[2023-12-25 20:27:29,161 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 20:27:29,161 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [456501213]
[2023-12-25 20:27:29,162 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 20:27:29,162 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 20:27:29,479 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 20:27:29,479 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1146395594]
[2023-12-25 20:27:29,480 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 20:27:29,480 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 20:27:29,481 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 20:27:29,481 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 20:27:29,485 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 20:27:34,526 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 20:27:34,663 INFO  L262         TraceCheckSpWp]: Trace formula consists of 20928 conjuncts, 35 conjunts are in the unsatisfiable core
[2023-12-25 20:27:34,800 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 20:27:43,764 INFO  L134       CoverageAnalysis]: Checked inductivity of 259 backedges. 259 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-25 20:27:43,764 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 20:27:43,764 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 20:27:43,764 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [456501213]
[2023-12-25 20:27:43,764 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 20:27:43,764 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1146395594]
[2023-12-25 20:27:43,764 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1146395594] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 20:27:43,764 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 20:27:43,765 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2023-12-25 20:27:43,765 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [798210235]
[2023-12-25 20:27:43,765 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 20:27:43,767 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-12-25 20:27:43,767 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 20:27:43,769 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-12-25 20:27:43,769 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42
[2023-12-25 20:27:43,770 INFO  L87              Difference]: Start difference. First operand 65161 states and 108120 transitions. Second operand  has 7 states, 7 states have (on average 723.0) internal successors, (5061), 6 states have internal predecessors, (5061), 0 states have call successors, (0), 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 20:27:47,527 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 20:27:47,527 INFO  L93              Difference]: Finished difference Result 127446 states and 211467 transitions.
[2023-12-25 20:27:47,527 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2023-12-25 20:27:47,529 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 723.0) internal successors, (5061), 6 states have internal predecessors, (5061), 0 states have call successors, (0), 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 5061
[2023-12-25 20:27:47,531 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 20:27:47,591 INFO  L225             Difference]: With dead ends: 127446
[2023-12-25 20:27:47,592 INFO  L226             Difference]: Without dead ends: 66090
[2023-12-25 20:27:47,635 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5063 GetRequests, 5055 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90
[2023-12-25 20:27:47,636 INFO  L413           NwaCegarLoop]: 10324 mSDtfsCounter, 55104 mSDsluCounter, 22224 mSDsCounter, 0 mSdLazyCounter, 5261 mSolverCounterSat, 125 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55104 SdHoareTripleChecker+Valid, 32548 SdHoareTripleChecker+Invalid, 5386 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 125 IncrementalHoareTripleChecker+Valid, 5261 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time
[2023-12-25 20:27:47,637 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [55104 Valid, 32548 Invalid, 5386 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [125 Valid, 5261 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time]
[2023-12-25 20:27:47,677 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 66090 states.
[2023-12-25 20:27:48,339 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 66090 to 65161.
[2023-12-25 20:27:48,384 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 65161 states, 65160 states have (on average 1.6592848373235114) internal successors, (108119), 65160 states have internal predecessors, (108119), 0 states have call successors, (0), 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 20:27:48,447 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 65161 states to 65161 states and 108119 transitions.
[2023-12-25 20:27:48,447 INFO  L78                 Accepts]: Start accepts. Automaton has 65161 states and 108119 transitions. Word has length 5061
[2023-12-25 20:27:48,449 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 20:27:48,449 INFO  L495      AbstractCegarLoop]: Abstraction has 65161 states and 108119 transitions.
[2023-12-25 20:27:48,450 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 723.0) internal successors, (5061), 6 states have internal predecessors, (5061), 0 states have call successors, (0), 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 20:27:48,450 INFO  L276                IsEmpty]: Start isEmpty. Operand 65161 states and 108119 transitions.
[2023-12-25 20:27:48,680 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5063
[2023-12-25 20:27:48,680 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 20:27:48,689 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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[2023-12-25 20:27:48,765 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Ended with exit code 0
[2023-12-25 20:27:48,896 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 20:27:48,897 INFO  L420      AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 20:27:48,897 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 20:27:48,897 INFO  L85        PathProgramCache]: Analyzing trace with hash 1472666811, now seen corresponding path program 1 times
[2023-12-25 20:27:48,897 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 20:27:48,897 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1415827991]
[2023-12-25 20:27:48,898 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 20:27:48,898 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 20:27:49,213 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 20:27:49,214 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1363274410]
[2023-12-25 20:27:49,214 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 20:27:49,215 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 20:27:49,215 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 20:27:49,216 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 20:27:49,217 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 20:27:54,110 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 20:27:54,253 INFO  L262         TraceCheckSpWp]: Trace formula consists of 20931 conjuncts, 7 conjunts are in the unsatisfiable core
[2023-12-25 20:27:54,309 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 20:27:56,473 INFO  L134       CoverageAnalysis]: Checked inductivity of 259 backedges. 259 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-25 20:27:56,473 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 20:27:56,473 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 20:27:56,473 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1415827991]
[2023-12-25 20:27:56,474 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 20:27:56,474 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1363274410]
[2023-12-25 20:27:56,474 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1363274410] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 20:27:56,474 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 20:27:56,474 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2023-12-25 20:27:56,474 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1633754553]
[2023-12-25 20:27:56,474 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 20:27:56,479 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2023-12-25 20:27:56,479 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 20:27:56,483 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2023-12-25 20:27:56,483 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30
[2023-12-25 20:27:56,484 INFO  L87              Difference]: Start difference. First operand 65161 states and 108119 transitions. Second operand  has 6 states, 6 states have (on average 843.6666666666666) internal successors, (5062), 6 states have internal predecessors, (5062), 0 states have call successors, (0), 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 20:28:03,032 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 20:28:03,032 INFO  L93              Difference]: Finished difference Result 182736 states and 303343 transitions.
[2023-12-25 20:28:03,032 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. 
[2023-12-25 20:28:03,033 INFO  L78                 Accepts]: Start accepts. Automaton has  has 6 states, 6 states have (on average 843.6666666666666) internal successors, (5062), 6 states have internal predecessors, (5062), 0 states have call successors, (0), 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 5062
[2023-12-25 20:28:03,034 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 20:28:03,126 INFO  L225             Difference]: With dead ends: 182736
[2023-12-25 20:28:03,127 INFO  L226             Difference]: Without dead ends: 118865
[2023-12-25 20:28:03,138 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5064 GetRequests, 5057 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72
[2023-12-25 20:28:03,139 INFO  L413           NwaCegarLoop]: 14928 mSDtfsCounter, 24633 mSDsluCounter, 39574 mSDsCounter, 0 mSdLazyCounter, 12528 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24633 SdHoareTripleChecker+Valid, 54502 SdHoareTripleChecker+Invalid, 12529 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12528 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.8s IncrementalHoareTripleChecker+Time
[2023-12-25 20:28:03,139 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [24633 Valid, 54502 Invalid, 12529 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 12528 Invalid, 0 Unknown, 0 Unchecked, 5.8s Time]
[2023-12-25 20:28:03,201 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 118865 states.
[2023-12-25 20:28:04,032 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 118865 to 83173.
[2023-12-25 20:28:04,204 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 83173 states, 83172 states have (on average 1.6588515365748089) internal successors, (137970), 83172 states have internal predecessors, (137970), 0 states have call successors, (0), 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 20:28:04,287 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 83173 states to 83173 states and 137970 transitions.
[2023-12-25 20:28:04,288 INFO  L78                 Accepts]: Start accepts. Automaton has 83173 states and 137970 transitions. Word has length 5062
[2023-12-25 20:28:04,288 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 20:28:04,288 INFO  L495      AbstractCegarLoop]: Abstraction has 83173 states and 137970 transitions.
[2023-12-25 20:28:04,289 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 6 states, 6 states have (on average 843.6666666666666) internal successors, (5062), 6 states have internal predecessors, (5062), 0 states have call successors, (0), 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 20:28:04,289 INFO  L276                IsEmpty]: Start isEmpty. Operand 83173 states and 137970 transitions.
[2023-12-25 20:28:04,518 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5064
[2023-12-25 20:28:04,518 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 20:28:04,519 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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[2023-12-25 20:28:04,574 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Ended with exit code 0
[2023-12-25 20:28:04,730 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 20:28:04,731 INFO  L420      AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 20:28:04,731 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 20:28:04,732 INFO  L85        PathProgramCache]: Analyzing trace with hash 1838921904, now seen corresponding path program 1 times
[2023-12-25 20:28:04,732 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 20:28:04,732 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [882978845]
[2023-12-25 20:28:04,732 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 20:28:04,732 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 20:28:05,046 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 20:28:05,046 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [366321799]
[2023-12-25 20:28:05,047 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 20:28:05,048 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 20:28:05,048 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 20:28:05,049 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 20:28:05,050 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 20:28:09,835 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 20:28:09,952 INFO  L262         TraceCheckSpWp]: Trace formula consists of 20934 conjuncts, 9 conjunts are in the unsatisfiable core
[2023-12-25 20:28:09,999 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 20:28:11,653 INFO  L134       CoverageAnalysis]: Checked inductivity of 259 backedges. 259 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-25 20:28:11,654 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 20:28:11,654 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 20:28:11,654 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [882978845]
[2023-12-25 20:28:11,654 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 20:28:11,654 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [366321799]
[2023-12-25 20:28:11,654 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [366321799] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 20:28:11,654 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 20:28:11,654 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2023-12-25 20:28:11,655 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1218831093]
[2023-12-25 20:28:11,655 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 20:28:11,657 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2023-12-25 20:28:11,657 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 20:28:11,659 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2023-12-25 20:28:11,659 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30
[2023-12-25 20:28:11,659 INFO  L87              Difference]: Start difference. First operand 83173 states and 137970 transitions. Second operand  has 6 states, 6 states have (on average 843.8333333333334) internal successors, (5063), 6 states have internal predecessors, (5063), 0 states have call successors, (0), 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 20:28:17,467 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 20:28:17,467 INFO  L93              Difference]: Finished difference Result 198200 states and 328963 transitions.
[2023-12-25 20:28:17,467 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. 
[2023-12-25 20:28:17,468 INFO  L78                 Accepts]: Start accepts. Automaton has  has 6 states, 6 states have (on average 843.8333333333334) internal successors, (5063), 6 states have internal predecessors, (5063), 0 states have call successors, (0), 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 5063
[2023-12-25 20:28:17,469 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 20:28:17,585 INFO  L225             Difference]: With dead ends: 198200
[2023-12-25 20:28:17,585 INFO  L226             Difference]: Without dead ends: 118865
[2023-12-25 20:28:17,630 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5064 GetRequests, 5058 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56
[2023-12-25 20:28:17,630 INFO  L413           NwaCegarLoop]: 9748 mSDtfsCounter, 16270 mSDsluCounter, 29224 mSDsCounter, 0 mSdLazyCounter, 10148 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16270 SdHoareTripleChecker+Valid, 38972 SdHoareTripleChecker+Invalid, 10149 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 10148 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time
[2023-12-25 20:28:17,631 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [16270 Valid, 38972 Invalid, 10149 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 10148 Invalid, 0 Unknown, 0 Unchecked, 5.1s Time]
[2023-12-25 20:28:17,701 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 118865 states.
[2023-12-25 20:28:18,574 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 118865 to 83361.
[2023-12-25 20:28:18,625 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 83361 states, 83360 states have (on average 1.6585892514395393) internal successors, (138260), 83360 states have internal predecessors, (138260), 0 states have call successors, (0), 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 20:28:18,707 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 83361 states to 83361 states and 138260 transitions.
[2023-12-25 20:28:18,707 INFO  L78                 Accepts]: Start accepts. Automaton has 83361 states and 138260 transitions. Word has length 5063
[2023-12-25 20:28:18,708 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 20:28:18,708 INFO  L495      AbstractCegarLoop]: Abstraction has 83361 states and 138260 transitions.
[2023-12-25 20:28:18,709 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 6 states, 6 states have (on average 843.8333333333334) internal successors, (5063), 6 states have internal predecessors, (5063), 0 states have call successors, (0), 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 20:28:18,709 INFO  L276                IsEmpty]: Start isEmpty. Operand 83361 states and 138260 transitions.
[2023-12-25 20:28:18,987 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5065
[2023-12-25 20:28:18,987 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 20:28:18,988 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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[2023-12-25 20:28:19,042 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 20:28:19,204 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 20:28:19,204 INFO  L420      AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 20:28:19,205 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 20:28:19,205 INFO  L85        PathProgramCache]: Analyzing trace with hash 471807566, now seen corresponding path program 1 times
[2023-12-25 20:28:19,205 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 20:28:19,205 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1858548327]
[2023-12-25 20:28:19,205 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 20:28:19,206 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 20:28:19,525 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 20:28:19,525 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [817368250]
[2023-12-25 20:28:19,526 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 20:28:19,526 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 20:28:19,526 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 20:28:19,527 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 20:28:19,529 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 20:28:24,405 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 20:28:24,527 INFO  L262         TraceCheckSpWp]: Trace formula consists of 20937 conjuncts, 9 conjunts are in the unsatisfiable core
[2023-12-25 20:28:24,571 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 20:28:26,731 INFO  L134       CoverageAnalysis]: Checked inductivity of 259 backedges. 259 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-25 20:28:26,731 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 20:28:26,731 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 20:28:26,732 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1858548327]
[2023-12-25 20:28:26,732 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 20:28:26,732 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [817368250]
[2023-12-25 20:28:26,732 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [817368250] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 20:28:26,732 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 20:28:26,732 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2023-12-25 20:28:26,733 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [127506772]
[2023-12-25 20:28:26,733 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 20:28:26,735 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2023-12-25 20:28:26,735 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 20:28:26,737 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2023-12-25 20:28:26,737 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30
[2023-12-25 20:28:26,738 INFO  L87              Difference]: Start difference. First operand 83361 states and 138260 transitions. Second operand  has 6 states, 6 states have (on average 844.0) internal successors, (5064), 6 states have internal predecessors, (5064), 0 states have call successors, (0), 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 20:28:31,891 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 20:28:31,892 INFO  L93              Difference]: Finished difference Result 198352 states and 329181 transitions.
[2023-12-25 20:28:31,892 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. 
[2023-12-25 20:28:31,893 INFO  L78                 Accepts]: Start accepts. Automaton has  has 6 states, 6 states have (on average 844.0) internal successors, (5064), 6 states have internal predecessors, (5064), 0 states have call successors, (0), 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 5064
[2023-12-25 20:28:31,894 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 20:28:32,011 INFO  L225             Difference]: With dead ends: 198352
[2023-12-25 20:28:32,011 INFO  L226             Difference]: Without dead ends: 118865
[2023-12-25 20:28:32,053 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5065 GetRequests, 5059 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56
[2023-12-25 20:28:32,053 INFO  L413           NwaCegarLoop]: 9748 mSDtfsCounter, 16257 mSDsluCounter, 29224 mSDsCounter, 0 mSdLazyCounter, 10148 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16257 SdHoareTripleChecker+Valid, 38972 SdHoareTripleChecker+Invalid, 10149 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 10148 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time
[2023-12-25 20:28:32,053 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [16257 Valid, 38972 Invalid, 10149 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 10148 Invalid, 0 Unknown, 0 Unchecked, 4.5s Time]
[2023-12-25 20:28:32,125 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 118865 states.
[2023-12-25 20:28:32,947 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 118865 to 83577.
[2023-12-25 20:28:33,013 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 83577 states, 83576 states have (on average 1.6584426151048148) internal successors, (138606), 83576 states have internal predecessors, (138606), 0 states have call successors, (0), 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 20:28:33,234 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 83577 states to 83577 states and 138606 transitions.
[2023-12-25 20:28:33,234 INFO  L78                 Accepts]: Start accepts. Automaton has 83577 states and 138606 transitions. Word has length 5064
[2023-12-25 20:28:33,235 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 20:28:33,235 INFO  L495      AbstractCegarLoop]: Abstraction has 83577 states and 138606 transitions.
[2023-12-25 20:28:33,236 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 6 states, 6 states have (on average 844.0) internal successors, (5064), 6 states have internal predecessors, (5064), 0 states have call successors, (0), 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 20:28:33,236 INFO  L276                IsEmpty]: Start isEmpty. Operand 83577 states and 138606 transitions.
[2023-12-25 20:28:33,454 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5066
[2023-12-25 20:28:33,454 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 20:28:33,455 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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[2023-12-25 20:28:33,509 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Forceful destruction successful, exit code 0
[2023-12-25 20:28:33,674 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 20:28:33,674 INFO  L420      AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 20:28:33,675 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 20:28:33,675 INFO  L85        PathProgramCache]: Analyzing trace with hash 1041930324, now seen corresponding path program 1 times
[2023-12-25 20:28:33,675 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 20:28:33,675 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [116498610]
[2023-12-25 20:28:33,676 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 20:28:33,676 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 20:28:34,004 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 20:28:34,004 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1628384079]
[2023-12-25 20:28:34,005 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 20:28:34,006 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 20:28:34,006 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 20:28:34,006 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 20:28:34,008 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 20:28:38,913 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 20:28:39,033 INFO  L262         TraceCheckSpWp]: Trace formula consists of 20940 conjuncts, 9 conjunts are in the unsatisfiable core
[2023-12-25 20:28:39,080 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 20:28:40,934 INFO  L134       CoverageAnalysis]: Checked inductivity of 259 backedges. 259 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-25 20:28:40,934 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 20:28:40,934 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 20:28:40,934 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [116498610]
[2023-12-25 20:28:40,934 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 20:28:40,934 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1628384079]
[2023-12-25 20:28:40,934 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1628384079] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 20:28:40,934 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 20:28:40,935 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2023-12-25 20:28:40,935 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1580336831]
[2023-12-25 20:28:40,935 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 20:28:40,937 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2023-12-25 20:28:40,937 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 20:28:40,939 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2023-12-25 20:28:40,940 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30
[2023-12-25 20:28:40,940 INFO  L87              Difference]: Start difference. First operand 83577 states and 138606 transitions. Second operand  has 6 states, 6 states have (on average 844.1666666666666) internal successors, (5065), 6 states have internal predecessors, (5065), 0 states have call successors, (0), 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 20:28:46,882 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 20:28:46,882 INFO  L93              Difference]: Finished difference Result 198532 states and 329455 transitions.
[2023-12-25 20:28:46,882 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. 
[2023-12-25 20:28:46,883 INFO  L78                 Accepts]: Start accepts. Automaton has  has 6 states, 6 states have (on average 844.1666666666666) internal successors, (5065), 6 states have internal predecessors, (5065), 0 states have call successors, (0), 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 5065
[2023-12-25 20:28:46,884 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 20:28:46,996 INFO  L225             Difference]: With dead ends: 198532
[2023-12-25 20:28:46,996 INFO  L226             Difference]: Without dead ends: 118865
[2023-12-25 20:28:47,042 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5066 GetRequests, 5060 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56
[2023-12-25 20:28:47,042 INFO  L413           NwaCegarLoop]: 9748 mSDtfsCounter, 22182 mSDsluCounter, 29224 mSDsCounter, 0 mSdLazyCounter, 10148 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22182 SdHoareTripleChecker+Valid, 38972 SdHoareTripleChecker+Invalid, 10149 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 10148 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.3s IncrementalHoareTripleChecker+Time
[2023-12-25 20:28:47,042 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [22182 Valid, 38972 Invalid, 10149 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 10148 Invalid, 0 Unknown, 0 Unchecked, 5.3s Time]
[2023-12-25 20:28:47,114 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 118865 states.
[2023-12-25 20:28:47,847 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 118865 to 83793.
[2023-12-25 20:28:47,911 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 83793 states, 83792 states have (on average 1.6582967347718158) internal successors, (138952), 83792 states have internal predecessors, (138952), 0 states have call successors, (0), 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 20:28:48,233 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 83793 states to 83793 states and 138952 transitions.
[2023-12-25 20:28:48,233 INFO  L78                 Accepts]: Start accepts. Automaton has 83793 states and 138952 transitions. Word has length 5065
[2023-12-25 20:28:48,235 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 20:28:48,235 INFO  L495      AbstractCegarLoop]: Abstraction has 83793 states and 138952 transitions.
[2023-12-25 20:28:48,236 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 6 states, 6 states have (on average 844.1666666666666) internal successors, (5065), 6 states have internal predecessors, (5065), 0 states have call successors, (0), 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 20:28:48,236 INFO  L276                IsEmpty]: Start isEmpty. Operand 83793 states and 138952 transitions.
[2023-12-25 20:28:48,484 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5067
[2023-12-25 20:28:48,485 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 20:28:48,486 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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[2023-12-25 20:28:48,543 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Ended with exit code 0
[2023-12-25 20:28:48,690 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 20:28:48,691 INFO  L420      AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 20:28:48,691 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 20:28:48,692 INFO  L85        PathProgramCache]: Analyzing trace with hash 254957810, now seen corresponding path program 1 times
[2023-12-25 20:28:48,692 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 20:28:48,692 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1319544116]
[2023-12-25 20:28:48,692 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 20:28:48,692 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 20:28:49,008 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 20:28:49,008 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1459304481]
[2023-12-25 20:28:49,009 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 20:28:49,009 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 20:28:49,009 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 20:28:49,010 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 20:28:49,012 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 20:28:53,765 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 20:28:53,885 INFO  L262         TraceCheckSpWp]: Trace formula consists of 20943 conjuncts, 9 conjunts are in the unsatisfiable core
[2023-12-25 20:28:53,929 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 20:29:00,514 INFO  L134       CoverageAnalysis]: Checked inductivity of 259 backedges. 259 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-25 20:29:00,514 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 20:29:00,515 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 20:29:00,515 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1319544116]
[2023-12-25 20:29:00,515 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 20:29:00,515 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1459304481]
[2023-12-25 20:29:00,515 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1459304481] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 20:29:00,515 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 20:29:00,515 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2023-12-25 20:29:00,515 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [914184832]
[2023-12-25 20:29:00,515 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 20:29:00,518 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2023-12-25 20:29:00,518 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 20:29:00,520 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2023-12-25 20:29:00,520 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30
[2023-12-25 20:29:00,520 INFO  L87              Difference]: Start difference. First operand 83793 states and 138952 transitions. Second operand  has 6 states, 6 states have (on average 844.3333333333334) internal successors, (5066), 6 states have internal predecessors, (5066), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
Received shutdown request...
[2023-12-25 20:29:06,205 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. 
[2023-12-25 20:29:06,205 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5067 GetRequests, 5061 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56
[2023-12-25 20:29:06,206 INFO  L413           NwaCegarLoop]: 9748 mSDtfsCounter, 10383 mSDsluCounter, 25405 mSDsCounter, 0 mSdLazyCounter, 9885 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10383 SdHoareTripleChecker+Valid, 35153 SdHoareTripleChecker+Invalid, 9886 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 9885 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.3s IncrementalHoareTripleChecker+Time
[2023-12-25 20:29:06,206 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [10383 Valid, 35153 Invalid, 9886 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 9885 Invalid, 0 Unknown, 0 Unchecked, 5.3s Time]
[2023-12-25 20:29:06,207 INFO  L805   garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining)
[2023-12-25 20:29:06,216 WARN  L340       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Timeout while monitored process is still running, waiting 1000 ms for graceful end
[2023-12-25 20:29:06,216 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 20:29:06,262 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Ended with exit code 0
[2023-12-25 20:29:06,407 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 20:29:06,408 WARN  L619      AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was constructing difference of abstraction (83793states) and FLOYD_HOARE automaton (currently 7 states, 6 states before enhancement),while ReachableStatesComputation was computing reachable states (129357 states constructed, input type IntersectNwa).
[2023-12-25 20:29:06,413 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]
[2023-12-25 20:29:06,415 INFO  L179   ceAbstractionStarter]: Computing trace abstraction results
[2023-12-25 20:29:06,417 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.12 08:29:06 BoogieIcfgContainer
[2023-12-25 20:29:06,417 INFO  L131        PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2023-12-25 20:29:06,417 INFO  L158              Benchmark]: Toolchain (without parser) took 822136.29ms. Allocated memory was 342.9MB in the beginning and 5.4GB in the end (delta: 5.1GB). Free memory was 282.8MB in the beginning and 1.7GB in the end (delta: -1.5GB). Peak memory consumption was 4.1GB. Max. memory is 8.0GB.
[2023-12-25 20:29:06,417 INFO  L158              Benchmark]: CDTParser took 0.09ms. Allocated memory is still 200.3MB. Free memory is still 154.5MB. There was no memory consumed. Max. memory is 8.0GB.
[2023-12-25 20:29:06,417 INFO  L158              Benchmark]: CACSL2BoogieTranslator took 1305.35ms. Allocated memory was 342.9MB in the beginning and 559.9MB in the end (delta: 217.1MB). Free memory was 282.8MB in the beginning and 423.9MB in the end (delta: -141.2MB). Peak memory consumption was 236.7MB. Max. memory is 8.0GB.
[2023-12-25 20:29:06,421 INFO  L158              Benchmark]: Boogie Procedure Inliner took 2222.28ms. Allocated memory was 559.9MB in the beginning and 2.6GB in the end (delta: 2.0GB). Free memory was 423.9MB in the beginning and 2.0GB in the end (delta: -1.6GB). Peak memory consumption was 432.5MB. Max. memory is 8.0GB.
[2023-12-25 20:29:06,422 INFO  L158              Benchmark]: Boogie Preprocessor took 2508.69ms. Allocated memory is still 2.6GB. Free memory was 2.0GB in the beginning and 1.9GB in the end (delta: 189.3MB). Peak memory consumption was 217.6MB. Max. memory is 8.0GB.
[2023-12-25 20:29:06,422 INFO  L158              Benchmark]: RCFGBuilder took 12968.79ms. Allocated memory was 2.6GB in the beginning and 4.7GB in the end (delta: 2.2GB). Free memory was 1.9GB in the beginning and 3.4GB in the end (delta: -1.5GB). Peak memory consumption was 642.6MB. Max. memory is 8.0GB.
[2023-12-25 20:29:06,422 INFO  L158              Benchmark]: TraceAbstraction took 803121.90ms. Allocated memory was 4.7GB in the beginning and 5.4GB in the end (delta: 664.8MB). Free memory was 3.4GB in the beginning and 1.7GB in the end (delta: 1.6GB). Peak memory consumption was 2.8GB. Max. memory is 8.0GB.
[2023-12-25 20:29:06,422 INFO  L338   ainManager$Toolchain]: #######################  End [Toolchain 1] #######################
 --- Results ---
 * Results from de.uni_freiburg.informatik.ultimate.core:
  - StatisticsResult: Toolchain Benchmarks
    Benchmark results are:
 * CDTParser took 0.09ms. Allocated memory is still 200.3MB. Free memory is still 154.5MB. There was no memory consumed. Max. memory is 8.0GB.
 * CACSL2BoogieTranslator took 1305.35ms. Allocated memory was 342.9MB in the beginning and 559.9MB in the end (delta: 217.1MB). Free memory was 282.8MB in the beginning and 423.9MB in the end (delta: -141.2MB). Peak memory consumption was 236.7MB. Max. memory is 8.0GB.
 * Boogie Procedure Inliner took 2222.28ms. Allocated memory was 559.9MB in the beginning and 2.6GB in the end (delta: 2.0GB). Free memory was 423.9MB in the beginning and 2.0GB in the end (delta: -1.6GB). Peak memory consumption was 432.5MB. Max. memory is 8.0GB.
 * Boogie Preprocessor took 2508.69ms. Allocated memory is still 2.6GB. Free memory was 2.0GB in the beginning and 1.9GB in the end (delta: 189.3MB). Peak memory consumption was 217.6MB. Max. memory is 8.0GB.
 * RCFGBuilder took 12968.79ms. Allocated memory was 2.6GB in the beginning and 4.7GB in the end (delta: 2.2GB). Free memory was 1.9GB in the beginning and 3.4GB in the end (delta: -1.5GB). Peak memory consumption was 642.6MB. Max. memory is 8.0GB.
 * TraceAbstraction took 803121.90ms. Allocated memory was 4.7GB in the beginning and 5.4GB in the end (delta: 664.8MB). Free memory was 3.4GB in the beginning and 1.7GB in the end (delta: 1.6GB). Peak memory consumption was 2.8GB. 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 constructing difference of abstraction (83793states) and FLOYD_HOARE automaton (currently 7 states, 6 states before enhancement),while ReachableStatesComputation was computing reachable states (129357 states constructed, input type IntersectNwa).
  - StatisticsResult: Ultimate Automizer benchmark data
    CFG has 1 procedures, 7392 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 803.1s, OverallIterations: 56, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 9.7s, AutomataDifference: 286.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1211226 SdHoareTripleChecker+Valid, 259.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1211226 mSDsluCounter, 2922173 SdHoareTripleChecker+Invalid, 218.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 2218259 mSDsCounter, 1273 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 547798 IncrementalHoareTripleChecker+Invalid, 549071 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1273 mSolverCounterUnsat, 703914 mSDtfsCounter, 547798 mSolverCounterSat, 5.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 267773 GetRequests, 267377 SyntacticMatches, 0 SemanticMatches, 396 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 786 ImplicationChecksByTransitivity, 2.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=83793occurred in iteration=55, InterpolantAutomatonStates: 403, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 20.4s AutomataMinimizationTime, 55 MinimizatonAttempts, 545894 StatesRemovedByMinimization, 54 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 62.6s SsaConstructionTime, 143.2s SatisfiabilityAnalysisTime, 208.0s InterpolantComputationTime, 264215 NumberOfCodeBlocks, 264215 NumberOfCodeBlocksAsserted, 56 NumberOfCheckSat, 269201 ConstructedInterpolants, 0 QuantifiedInterpolants, 1244759 SizeOfPredicates, 197 NumberOfNonLiveVariables, 1086330 ConjunctsInSsa, 696 ConjunctsInUnsatCore, 57 InterpolantComputations, 56 PerfectInterpolantSequences, 13713/13715 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