/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.cambridge.6.prop2-back-serstep.c


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


This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m
[2023-12-25 17:03:09,394 INFO  L188        SettingsManager]: Resetting all preferences to default values...
[2023-12-25 17:03:09,460 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 17:03:09,463 WARN  L101        SettingsManager]: Preference file contains the following unknown settings:
[2023-12-25 17:03:09,463 WARN  L103        SettingsManager]:   * de.uni_freiburg.informatik.ultimate.core.Log level for class
[2023-12-25 17:03:09,488 INFO  L130        SettingsManager]: Preferences different from defaults after loading the file:
[2023-12-25 17:03:09,488 INFO  L151        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2023-12-25 17:03:09,489 INFO  L153        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2023-12-25 17:03:09,489 INFO  L151        SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults:
[2023-12-25 17:03:09,492 INFO  L153        SettingsManager]:  * Use memory slicer=true
[2023-12-25 17:03:09,492 INFO  L151        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2023-12-25 17:03:09,493 INFO  L153        SettingsManager]:  * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2023-12-25 17:03:09,493 INFO  L151        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2023-12-25 17:03:09,494 INFO  L153        SettingsManager]:  * Create parallel compositions if possible=false
[2023-12-25 17:03:09,494 INFO  L153        SettingsManager]:  * Use SBE=true
[2023-12-25 17:03:09,494 INFO  L151        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2023-12-25 17:03:09,494 INFO  L153        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2023-12-25 17:03:09,495 INFO  L153        SettingsManager]:  * Overapproximate operations on floating types=true
[2023-12-25 17:03:09,495 INFO  L153        SettingsManager]:  * Check division by zero=IGNORE
[2023-12-25 17:03:09,495 INFO  L153        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2023-12-25 17:03:09,495 INFO  L153        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2023-12-25 17:03:09,495 INFO  L153        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2023-12-25 17:03:09,495 INFO  L153        SettingsManager]:  * Allow undefined functions=false
[2023-12-25 17:03:09,496 INFO  L153        SettingsManager]:  * Check if freed pointer was valid=false
[2023-12-25 17:03:09,496 INFO  L153        SettingsManager]:  * Use constant arrays=true
[2023-12-25 17:03:09,496 INFO  L151        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2023-12-25 17:03:09,496 INFO  L153        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2023-12-25 17:03:09,496 INFO  L153        SettingsManager]:  * Only consider context switches at boundaries of atomic blocks=true
[2023-12-25 17:03:09,497 INFO  L153        SettingsManager]:  * SMT solver=External_DefaultMode
[2023-12-25 17:03:09,497 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2023-12-25 17:03:09,497 INFO  L151        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2023-12-25 17:03:09,498 INFO  L153        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2023-12-25 17:03:09,498 INFO  L153        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopHeads
[2023-12-25 17:03:09,498 INFO  L153        SettingsManager]:  * Trace refinement strategy=CAMEL
[2023-12-25 17:03:09,498 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2023-12-25 17:03:09,498 INFO  L153        SettingsManager]:  * Apply one-shot large block encoding in concurrent analysis=false
[2023-12-25 17:03:09,498 INFO  L153        SettingsManager]:  * Automaton type used in concurrency analysis=PETRI_NET
[2023-12-25 17:03:09,498 INFO  L153        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2023-12-25 17:03:09,498 INFO  L153        SettingsManager]:  * Order on configurations for Petri net unfoldings=DBO
[2023-12-25 17:03:09,498 INFO  L153        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2023-12-25 17:03:09,498 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$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true
[2023-12-25 17:03:09,696 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2023-12-25 17:03:09,724 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2023-12-25 17:03:09,726 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2023-12-25 17:03:09,726 INFO  L270        PluginConnector]: Initializing CDTParser...
[2023-12-25 17:03:09,727 INFO  L274        PluginConnector]: CDTParser initialized
[2023-12-25 17:03:09,727 INFO  L431   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.cambridge.6.prop2-back-serstep.c
[2023-12-25 17:03:10,838 INFO  L533              CDTParser]: Created temporary CDT project at NULL
[2023-12-25 17:03:11,247 INFO  L384              CDTParser]: Found 1 translation units.
[2023-12-25 17:03:11,247 INFO  L180              CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.cambridge.6.prop2-back-serstep.c
[2023-12-25 17:03:11,279 INFO  L427              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f64207cbd/8f03b94fd4584f759c221a6535e05ac2/FLAG36a29b7de
[2023-12-25 17:03:11,293 INFO  L435              CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f64207cbd/8f03b94fd4584f759c221a6535e05ac2
[2023-12-25 17:03:11,295 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2023-12-25 17:03:11,296 INFO  L133        ToolchainWalker]: Walking toolchain with 5 elements.
[2023-12-25 17:03:11,298 INFO  L112        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2023-12-25 17:03:11,298 INFO  L270        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2023-12-25 17:03:11,302 INFO  L274        PluginConnector]: CACSL2BoogieTranslator initialized
[2023-12-25 17:03:11,302 INFO  L184        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.12 05:03:11" (1/1) ...
[2023-12-25 17:03:11,303 INFO  L204        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4815ad1f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 05:03:11, skipping insertion in model container
[2023-12-25 17:03:11,303 INFO  L184        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.12 05:03:11" (1/1) ...
[2023-12-25 17:03:11,400 INFO  L177         MainTranslator]: Built tables and reachable declarations
[2023-12-25 17:03:11,629 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.cambridge.6.prop2-back-serstep.c[1177,1190]
[2023-12-25 17:03:12,345 INFO  L209          PostProcessor]: Analyzing one entry point: main
[2023-12-25 17:03:12,351 INFO  L202         MainTranslator]: Completed pre-run
[2023-12-25 17:03:12,359 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.cambridge.6.prop2-back-serstep.c[1177,1190]
[2023-12-25 17:03:12,734 INFO  L209          PostProcessor]: Analyzing one entry point: main
[2023-12-25 17:03:12,744 INFO  L206         MainTranslator]: Completed translation
[2023-12-25 17:03:12,744 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 05:03:12 WrapperNode
[2023-12-25 17:03:12,744 INFO  L131        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2023-12-25 17:03:12,746 INFO  L112        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2023-12-25 17:03:12,746 INFO  L270        PluginConnector]: Initializing Boogie Procedure Inliner...
[2023-12-25 17:03:12,746 INFO  L274        PluginConnector]: Boogie Procedure Inliner initialized
[2023-12-25 17:03:12,750 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 05:03:12" (1/1) ...
[2023-12-25 17:03:12,938 INFO  L184        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 05:03:12" (1/1) ...
[2023-12-25 17:03:15,113 INFO  L138                Inliner]: procedures = 17, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 29871
[2023-12-25 17:03:15,114 INFO  L131        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2023-12-25 17:03:15,114 INFO  L112        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2023-12-25 17:03:15,115 INFO  L270        PluginConnector]: Initializing Boogie Preprocessor...
[2023-12-25 17:03:15,115 INFO  L274        PluginConnector]: Boogie Preprocessor initialized
[2023-12-25 17:03:15,122 INFO  L184        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 05:03:12" (1/1) ...
[2023-12-25 17:03:15,123 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 05:03:12" (1/1) ...
[2023-12-25 17:03:15,616 INFO  L184        PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 05:03:12" (1/1) ...
[2023-12-25 17:03:16,007 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 17:03:16,008 INFO  L184        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 05:03:12" (1/1) ...
[2023-12-25 17:03:16,008 INFO  L184        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 05:03:12" (1/1) ...
[2023-12-25 17:03:16,674 INFO  L184        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 05:03:12" (1/1) ...
[2023-12-25 17:03:16,795 INFO  L184        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 05:03:12" (1/1) ...
[2023-12-25 17:03:16,973 INFO  L184        PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 05:03:12" (1/1) ...
[2023-12-25 17:03:17,137 INFO  L184        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 05:03:12" (1/1) ...
[2023-12-25 17:03:17,569 INFO  L131        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2023-12-25 17:03:17,570 INFO  L112        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2023-12-25 17:03:17,570 INFO  L270        PluginConnector]: Initializing RCFGBuilder...
[2023-12-25 17:03:17,570 INFO  L274        PluginConnector]: RCFGBuilder initialized
[2023-12-25 17:03:17,571 INFO  L184        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 05:03:12" (1/1) ...
[2023-12-25 17:03:17,574 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2023-12-25 17:03:17,581 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 17:03:17,605 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 17:03:17,648 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 17:03:17,652 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2023-12-25 17:03:17,652 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int#0
[2023-12-25 17:03:17,652 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2023-12-25 17:03:17,652 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2023-12-25 17:03:18,924 INFO  L241             CfgBuilder]: Building ICFG
[2023-12-25 17:03:18,926 INFO  L267             CfgBuilder]: Building CFG for each procedure with an implementation
[2023-12-25 17:03:29,122 INFO  L282             CfgBuilder]: Performing block encoding
[2023-12-25 17:03:29,448 INFO  L304             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2023-12-25 17:03:29,448 INFO  L309             CfgBuilder]: Removed 1 assume(true) statements.
[2023-12-25 17:03:29,448 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.12 05:03:29 BoogieIcfgContainer
[2023-12-25 17:03:29,448 INFO  L131        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2023-12-25 17:03:29,451 INFO  L112        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2023-12-25 17:03:29,451 INFO  L270        PluginConnector]: Initializing TraceAbstraction...
[2023-12-25 17:03:29,453 INFO  L274        PluginConnector]: TraceAbstraction initialized
[2023-12-25 17:03:29,454 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.12 05:03:11" (1/3) ...
[2023-12-25 17:03:29,454 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17a637ca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.12 05:03:29, skipping insertion in model container
[2023-12-25 17:03:29,455 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 05:03:12" (2/3) ...
[2023-12-25 17:03:29,455 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17a637ca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.12 05:03:29, skipping insertion in model container
[2023-12-25 17:03:29,455 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.12 05:03:29" (3/3) ...
[2023-12-25 17:03:29,457 INFO  L112   eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.cambridge.6.prop2-back-serstep.c
[2023-12-25 17:03:29,469 INFO  L204   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2023-12-25 17:03:29,470 INFO  L163   ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2023-12-25 17:03:29,603 INFO  L356      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2023-12-25 17:03:29,608 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;@2fef5d71, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2023-12-25 17:03:29,608 INFO  L358      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2023-12-25 17:03:29,623 INFO  L276                IsEmpty]: Start isEmpty. Operand  has 6352 states, 6350 states have (on average 1.6711811023622047) internal successors, (10612), 6351 states have internal predecessors, (10612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 17:03:29,651 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 523
[2023-12-25 17:03:29,651 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 17:03:29,652 INFO  L195           NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-12-25 17:03:29,653 INFO  L420      AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 17:03:29,658 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 17:03:29,659 INFO  L85        PathProgramCache]: Analyzing trace with hash 982258382, now seen corresponding path program 1 times
[2023-12-25 17:03:29,666 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 17:03:29,667 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1464865519]
[2023-12-25 17:03:29,667 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 17:03:29,667 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 17:03:30,427 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 17:03:31,804 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 17:03:31,804 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 17:03:31,805 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1464865519]
[2023-12-25 17:03:31,805 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1464865519] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 17:03:31,805 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 17:03:31,805 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-12-25 17:03:31,806 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1366665180]
[2023-12-25 17:03:31,807 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 17:03:31,812 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-12-25 17:03:31,812 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 17:03:31,836 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-12-25 17:03:31,837 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-12-25 17:03:31,849 INFO  L87              Difference]: Start difference. First operand  has 6352 states, 6350 states have (on average 1.6711811023622047) internal successors, (10612), 6351 states have internal predecessors, (10612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand  has 4 states, 4 states have (on average 130.5) internal successors, (522), 4 states have internal predecessors, (522), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 17:03:32,092 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 17:03:32,093 INFO  L93              Difference]: Finished difference Result 12508 states and 20900 transitions.
[2023-12-25 17:03:32,094 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-12-25 17:03:32,095 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 130.5) internal successors, (522), 4 states have internal predecessors, (522), 0 states have call successors, (0), 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 522
[2023-12-25 17:03:32,099 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 17:03:32,128 INFO  L225             Difference]: With dead ends: 12508
[2023-12-25 17:03:32,128 INFO  L226             Difference]: Without dead ends: 6352
[2023-12-25 17:03:32,141 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 17:03:32,143 INFO  L413           NwaCegarLoop]: 10605 mSDtfsCounter, 1 mSDsluCounter, 21205 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 31810 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2023-12-25 17:03:32,144 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 31810 Invalid, 13 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-12-25 17:03:32,162 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 6352 states.
[2023-12-25 17:03:32,254 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 6352 to 6352.
[2023-12-25 17:03:32,263 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 6352 states, 6351 states have (on average 1.670603054637065) internal successors, (10610), 6351 states have internal predecessors, (10610), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 17:03:32,275 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 6352 states to 6352 states and 10610 transitions.
[2023-12-25 17:03:32,276 INFO  L78                 Accepts]: Start accepts. Automaton has 6352 states and 10610 transitions. Word has length 522
[2023-12-25 17:03:32,277 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 17:03:32,277 INFO  L495      AbstractCegarLoop]: Abstraction has 6352 states and 10610 transitions.
[2023-12-25 17:03:32,278 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 130.5) internal successors, (522), 4 states have internal predecessors, (522), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 17:03:32,278 INFO  L276                IsEmpty]: Start isEmpty. Operand 6352 states and 10610 transitions.
[2023-12-25 17:03:32,283 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 524
[2023-12-25 17:03:32,283 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 17:03:32,283 INFO  L195           NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-12-25 17:03:32,283 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2023-12-25 17:03:32,283 INFO  L420      AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 17:03:32,284 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 17:03:32,284 INFO  L85        PathProgramCache]: Analyzing trace with hash 386966826, now seen corresponding path program 1 times
[2023-12-25 17:03:32,284 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 17:03:32,284 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [416635887]
[2023-12-25 17:03:32,285 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 17:03:32,285 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 17:03:32,542 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 17:03:33,150 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 17:03:33,151 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 17:03:33,151 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [416635887]
[2023-12-25 17:03:33,151 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [416635887] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 17:03:33,151 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 17:03:33,151 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-12-25 17:03:33,152 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1965221699]
[2023-12-25 17:03:33,152 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 17:03:33,154 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-12-25 17:03:33,157 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 17:03:33,157 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-12-25 17:03:33,157 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-12-25 17:03:33,158 INFO  L87              Difference]: Start difference. First operand 6352 states and 10610 transitions. Second operand  has 4 states, 4 states have (on average 130.75) internal successors, (523), 4 states have internal predecessors, (523), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 17:03:33,431 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 17:03:33,431 INFO  L93              Difference]: Finished difference Result 12511 states and 20898 transitions.
[2023-12-25 17:03:33,432 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-12-25 17:03:33,432 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 130.75) internal successors, (523), 4 states have internal predecessors, (523), 0 states have call successors, (0), 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 523
[2023-12-25 17:03:33,432 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 17:03:33,446 INFO  L225             Difference]: With dead ends: 12511
[2023-12-25 17:03:33,447 INFO  L226             Difference]: Without dead ends: 6355
[2023-12-25 17:03:33,451 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 17:03:33,452 INFO  L413           NwaCegarLoop]: 10605 mSDtfsCounter, 1 mSDsluCounter, 21203 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 31808 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2023-12-25 17:03:33,453 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 31808 Invalid, 15 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-12-25 17:03:33,460 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 6355 states.
[2023-12-25 17:03:33,519 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 6355 to 6354.
[2023-12-25 17:03:33,535 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 6354 states, 6353 states have (on average 1.670391940815363) internal successors, (10612), 6353 states have internal predecessors, (10612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 17:03:33,547 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 6354 states to 6354 states and 10612 transitions.
[2023-12-25 17:03:33,547 INFO  L78                 Accepts]: Start accepts. Automaton has 6354 states and 10612 transitions. Word has length 523
[2023-12-25 17:03:33,547 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 17:03:33,548 INFO  L495      AbstractCegarLoop]: Abstraction has 6354 states and 10612 transitions.
[2023-12-25 17:03:33,548 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 130.75) internal successors, (523), 4 states have internal predecessors, (523), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 17:03:33,548 INFO  L276                IsEmpty]: Start isEmpty. Operand 6354 states and 10612 transitions.
[2023-12-25 17:03:33,553 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 525
[2023-12-25 17:03:33,553 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 17:03:33,553 INFO  L195           NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-12-25 17:03:33,553 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2023-12-25 17:03:33,554 INFO  L420      AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 17:03:33,554 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 17:03:33,554 INFO  L85        PathProgramCache]: Analyzing trace with hash 675647722, now seen corresponding path program 1 times
[2023-12-25 17:03:33,555 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 17:03:33,555 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1516906444]
[2023-12-25 17:03:33,555 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 17:03:33,555 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 17:03:33,718 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 17:03:34,369 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 17:03:34,370 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 17:03:34,370 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1516906444]
[2023-12-25 17:03:34,370 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1516906444] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 17:03:34,370 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 17:03:34,371 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-12-25 17:03:34,371 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1128604068]
[2023-12-25 17:03:34,371 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 17:03:34,372 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-12-25 17:03:34,372 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 17:03:34,372 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-12-25 17:03:34,374 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-12-25 17:03:34,374 INFO  L87              Difference]: Start difference. First operand 6354 states and 10612 transitions. Second operand  has 4 states, 4 states have (on average 131.0) internal successors, (524), 4 states have internal predecessors, (524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 17:03:34,609 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 17:03:34,610 INFO  L93              Difference]: Finished difference Result 18664 states and 31175 transitions.
[2023-12-25 17:03:34,610 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2023-12-25 17:03:34,610 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 131.0) internal successors, (524), 4 states have internal predecessors, (524), 0 states have call successors, (0), 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 524
[2023-12-25 17:03:34,611 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 17:03:34,652 INFO  L225             Difference]: With dead ends: 18664
[2023-12-25 17:03:34,652 INFO  L226             Difference]: Without dead ends: 12506
[2023-12-25 17:03:34,663 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2023-12-25 17:03:34,665 INFO  L413           NwaCegarLoop]: 11565 mSDtfsCounter, 10273 mSDsluCounter, 22161 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10273 SdHoareTripleChecker+Valid, 33726 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2023-12-25 17:03:34,665 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [10273 Valid, 33726 Invalid, 19 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-12-25 17:03:34,675 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 12506 states.
[2023-12-25 17:03:34,759 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 12506 to 6356.
[2023-12-25 17:03:34,766 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 6356 states, 6355 states have (on average 1.6701809598741149) internal successors, (10614), 6355 states have internal predecessors, (10614), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 17:03:34,780 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 6356 states to 6356 states and 10614 transitions.
[2023-12-25 17:03:34,780 INFO  L78                 Accepts]: Start accepts. Automaton has 6356 states and 10614 transitions. Word has length 524
[2023-12-25 17:03:34,781 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 17:03:34,781 INFO  L495      AbstractCegarLoop]: Abstraction has 6356 states and 10614 transitions.
[2023-12-25 17:03:34,782 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 131.0) internal successors, (524), 4 states have internal predecessors, (524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 17:03:34,783 INFO  L276                IsEmpty]: Start isEmpty. Operand 6356 states and 10614 transitions.
[2023-12-25 17:03:34,789 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 526
[2023-12-25 17:03:34,789 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 17:03:34,793 INFO  L195           NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-12-25 17:03:34,793 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2023-12-25 17:03:34,793 INFO  L420      AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 17:03:34,794 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 17:03:34,794 INFO  L85        PathProgramCache]: Analyzing trace with hash -640460526, now seen corresponding path program 1 times
[2023-12-25 17:03:34,794 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 17:03:34,794 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1999068981]
[2023-12-25 17:03:34,794 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 17:03:34,794 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 17:03:34,944 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 17:03:35,568 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 17:03:35,568 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 17:03:35,568 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1999068981]
[2023-12-25 17:03:35,569 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1999068981] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 17:03:35,569 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 17:03:35,569 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-12-25 17:03:35,569 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1919882736]
[2023-12-25 17:03:35,569 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 17:03:35,570 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-12-25 17:03:35,570 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 17:03:35,570 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-12-25 17:03:35,570 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2023-12-25 17:03:35,571 INFO  L87              Difference]: Start difference. First operand 6356 states and 10614 transitions. Second operand  has 5 states, 5 states have (on average 105.0) internal successors, (525), 4 states have internal predecessors, (525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 17:03:35,866 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 17:03:35,867 INFO  L93              Difference]: Finished difference Result 19246 states and 32141 transitions.
[2023-12-25 17:03:35,867 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2023-12-25 17:03:35,867 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 105.0) internal successors, (525), 4 states have internal predecessors, (525), 0 states have call successors, (0), 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 525
[2023-12-25 17:03:35,868 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 17:03:35,885 INFO  L225             Difference]: With dead ends: 19246
[2023-12-25 17:03:35,885 INFO  L226             Difference]: Without dead ends: 13086
[2023-12-25 17:03:35,894 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 17:03:35,899 INFO  L413           NwaCegarLoop]: 11564 mSDtfsCounter, 41874 mSDsluCounter, 21204 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41874 SdHoareTripleChecker+Valid, 32768 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2023-12-25 17:03:35,899 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [41874 Valid, 32768 Invalid, 16 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-12-25 17:03:35,913 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 13086 states.
[2023-12-25 17:03:36,104 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 13086 to 6932.
[2023-12-25 17:03:36,114 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 6932 states, 6931 states have (on average 1.669888904919925) internal successors, (11574), 6931 states have internal predecessors, (11574), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 17:03:36,126 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 6932 states to 6932 states and 11574 transitions.
[2023-12-25 17:03:36,126 INFO  L78                 Accepts]: Start accepts. Automaton has 6932 states and 11574 transitions. Word has length 525
[2023-12-25 17:03:36,127 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 17:03:36,127 INFO  L495      AbstractCegarLoop]: Abstraction has 6932 states and 11574 transitions.
[2023-12-25 17:03:36,127 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 105.0) internal successors, (525), 4 states have internal predecessors, (525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 17:03:36,127 INFO  L276                IsEmpty]: Start isEmpty. Operand 6932 states and 11574 transitions.
[2023-12-25 17:03:36,283 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 4485
[2023-12-25 17:03:36,283 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 17:03:36,285 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-12-25 17:03:36,285 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3
[2023-12-25 17:03:36,285 INFO  L420      AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 17:03:36,286 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 17:03:36,286 INFO  L85        PathProgramCache]: Analyzing trace with hash -1189172721, now seen corresponding path program 1 times
[2023-12-25 17:03:36,286 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 17:03:36,286 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1644673807]
[2023-12-25 17:03:36,287 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 17:03:36,287 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 17:03:36,745 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 17:03:36,745 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [316517337]
[2023-12-25 17:03:36,746 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 17:03:36,747 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 17:03:36,747 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 17:03:36,749 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 17:03:36,755 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 17:03:43,040 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 17:03:43,193 INFO  L262         TraceCheckSpWp]: Trace formula consists of 25693 conjuncts, 6 conjunts are in the unsatisfiable core
[2023-12-25 17:03:43,281 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 17:03:43,448 INFO  L134       CoverageAnalysis]: Checked inductivity of 390 backedges. 390 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-25 17:03:43,448 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 17:03:43,449 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 17:03:43,449 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1644673807]
[2023-12-25 17:03:43,449 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 17:03:43,449 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [316517337]
[2023-12-25 17:03:43,449 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [316517337] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 17:03:43,449 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 17:03:43,449 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-12-25 17:03:43,450 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1914308943]
[2023-12-25 17:03:43,450 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 17:03:43,453 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-12-25 17:03:43,453 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 17:03:43,456 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-12-25 17:03:43,456 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-12-25 17:03:43,457 INFO  L87              Difference]: Start difference. First operand 6932 states and 11574 transitions. Second operand  has 4 states, 4 states have (on average 1121.0) internal successors, (4484), 4 states have internal predecessors, (4484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 17:03:43,633 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 17:03:43,633 INFO  L93              Difference]: Finished difference Result 13102 states and 21878 transitions.
[2023-12-25 17:03:43,634 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-12-25 17:03:43,635 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 1121.0) internal successors, (4484), 4 states have internal predecessors, (4484), 0 states have call successors, (0), 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 4484
[2023-12-25 17:03:43,636 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 17:03:43,645 INFO  L225             Difference]: With dead ends: 13102
[2023-12-25 17:03:43,645 INFO  L226             Difference]: Without dead ends: 6942
[2023-12-25 17:03:43,652 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 4483 GetRequests, 4481 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 17:03:43,652 INFO  L413           NwaCegarLoop]: 10605 mSDtfsCounter, 12 mSDsluCounter, 21200 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 31805 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2023-12-25 17:03:43,652 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 31805 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-12-25 17:03:43,657 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 6942 states.
[2023-12-25 17:03:43,717 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 6942 to 6934.
[2023-12-25 17:03:43,723 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 6934 states, 6933 states have (on average 1.6696956584451175) internal successors, (11576), 6933 states have internal predecessors, (11576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 17:03:43,732 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 6934 states to 6934 states and 11576 transitions.
[2023-12-25 17:03:43,733 INFO  L78                 Accepts]: Start accepts. Automaton has 6934 states and 11576 transitions. Word has length 4484
[2023-12-25 17:03:43,733 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 17:03:43,734 INFO  L495      AbstractCegarLoop]: Abstraction has 6934 states and 11576 transitions.
[2023-12-25 17:03:43,735 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 1121.0) internal successors, (4484), 4 states have internal predecessors, (4484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 17:03:43,735 INFO  L276                IsEmpty]: Start isEmpty. Operand 6934 states and 11576 transitions.
[2023-12-25 17:03:43,879 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 4485
[2023-12-25 17:03:43,879 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 17:03:43,883 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:03:43,951 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0
[2023-12-25 17:03:44,096 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 17:03:44,096 INFO  L420      AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 17:03:44,097 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 17:03:44,098 INFO  L85        PathProgramCache]: Analyzing trace with hash -1956526115, now seen corresponding path program 1 times
[2023-12-25 17:03:44,098 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 17:03:44,098 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1976502547]
[2023-12-25 17:03:44,098 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 17:03:44,099 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 17:03:44,510 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 17:03:44,511 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [603134360]
[2023-12-25 17:03:44,511 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 17:03:44,512 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 17:03:44,512 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 17:03:44,513 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 17:03:44,541 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 17:03:50,322 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 17:03:50,468 INFO  L262         TraceCheckSpWp]: Trace formula consists of 25694 conjuncts, 6 conjunts are in the unsatisfiable core
[2023-12-25 17:03:50,527 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 17:03:50,597 INFO  L134       CoverageAnalysis]: Checked inductivity of 390 backedges. 390 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-25 17:03:50,597 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 17:03:50,597 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 17:03:50,597 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1976502547]
[2023-12-25 17:03:50,598 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 17:03:50,600 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [603134360]
[2023-12-25 17:03:50,601 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [603134360] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 17:03:50,601 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 17:03:50,602 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-12-25 17:03:50,602 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [462612967]
[2023-12-25 17:03:50,602 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 17:03:50,605 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-12-25 17:03:50,605 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 17:03:50,608 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-12-25 17:03:50,608 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-12-25 17:03:50,609 INFO  L87              Difference]: Start difference. First operand 6934 states and 11576 transitions. Second operand  has 4 states, 4 states have (on average 1121.0) internal successors, (4484), 4 states have internal predecessors, (4484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 17:03:50,746 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 17:03:50,746 INFO  L93              Difference]: Finished difference Result 13105 states and 21880 transitions.
[2023-12-25 17:03:50,746 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-12-25 17:03:50,748 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 1121.0) internal successors, (4484), 4 states have internal predecessors, (4484), 0 states have call successors, (0), 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 4484
[2023-12-25 17:03:50,749 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 17:03:50,757 INFO  L225             Difference]: With dead ends: 13105
[2023-12-25 17:03:50,758 INFO  L226             Difference]: Without dead ends: 6943
[2023-12-25 17:03:50,764 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 4483 GetRequests, 4481 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 17:03:50,764 INFO  L413           NwaCegarLoop]: 10605 mSDtfsCounter, 12 mSDsluCounter, 21200 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 31805 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 17:03:50,764 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 31805 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-12-25 17:03:50,853 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 6943 states.
[2023-12-25 17:03:50,900 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 6943 to 6935.
[2023-12-25 17:03:50,905 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 6935 states, 6934 states have (on average 1.6695990770118259) internal successors, (11577), 6934 states have internal predecessors, (11577), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 17:03:50,914 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 6935 states to 6935 states and 11577 transitions.
[2023-12-25 17:03:50,914 INFO  L78                 Accepts]: Start accepts. Automaton has 6935 states and 11577 transitions. Word has length 4484
[2023-12-25 17:03:50,915 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 17:03:50,915 INFO  L495      AbstractCegarLoop]: Abstraction has 6935 states and 11577 transitions.
[2023-12-25 17:03:50,916 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 1121.0) internal successors, (4484), 4 states have internal predecessors, (4484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 17:03:50,916 INFO  L276                IsEmpty]: Start isEmpty. Operand 6935 states and 11577 transitions.
[2023-12-25 17:03:51,021 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 4485
[2023-12-25 17:03:51,022 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 17:03:51,023 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-12-25 17:03:51,092 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 17:03:51,248 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 17:03:51,248 INFO  L420      AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 17:03:51,249 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 17:03:51,250 INFO  L85        PathProgramCache]: Analyzing trace with hash 897100459, now seen corresponding path program 1 times
[2023-12-25 17:03:51,250 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 17:03:51,250 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1748680273]
[2023-12-25 17:03:51,250 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 17:03:51,250 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 17:03:51,689 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 17:03:51,690 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [552464794]
[2023-12-25 17:03:51,690 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 17:03:51,691 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 17:03:51,691 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 17:03:51,692 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 17:03:51,737 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 17:03:57,534 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 17:03:57,686 INFO  L262         TraceCheckSpWp]: Trace formula consists of 25695 conjuncts, 6 conjunts are in the unsatisfiable core
[2023-12-25 17:03:57,742 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 17:03:57,863 INFO  L134       CoverageAnalysis]: Checked inductivity of 390 backedges. 390 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-25 17:03:57,863 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 17:03:57,863 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 17:03:57,863 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1748680273]
[2023-12-25 17:03:57,863 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 17:03:57,863 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [552464794]
[2023-12-25 17:03:57,863 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [552464794] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 17:03:57,864 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 17:03:57,866 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-12-25 17:03:57,866 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1361902504]
[2023-12-25 17:03:57,866 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 17:03:57,869 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-12-25 17:03:57,869 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 17:03:57,872 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-12-25 17:03:57,872 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-12-25 17:03:57,873 INFO  L87              Difference]: Start difference. First operand 6935 states and 11577 transitions. Second operand  has 4 states, 4 states have (on average 1121.0) internal successors, (4484), 4 states have internal predecessors, (4484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 17:03:58,014 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 17:03:58,014 INFO  L93              Difference]: Finished difference Result 13107 states and 21882 transitions.
[2023-12-25 17:03:58,015 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-12-25 17:03:58,016 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 1121.0) internal successors, (4484), 4 states have internal predecessors, (4484), 0 states have call successors, (0), 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 4484
[2023-12-25 17:03:58,017 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 17:03:58,026 INFO  L225             Difference]: With dead ends: 13107
[2023-12-25 17:03:58,026 INFO  L226             Difference]: Without dead ends: 6944
[2023-12-25 17:03:58,032 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 4483 GetRequests, 4481 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 17:03:58,033 INFO  L413           NwaCegarLoop]: 10605 mSDtfsCounter, 12 mSDsluCounter, 21200 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 31805 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 17:03:58,033 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 31805 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-12-25 17:03:58,039 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 6944 states.
[2023-12-25 17:03:58,090 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 6944 to 6936.
[2023-12-25 17:03:58,096 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 6936 states, 6935 states have (on average 1.6695025234318674) internal successors, (11578), 6935 states have internal predecessors, (11578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 17:03:58,105 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 6936 states to 6936 states and 11578 transitions.
[2023-12-25 17:03:58,105 INFO  L78                 Accepts]: Start accepts. Automaton has 6936 states and 11578 transitions. Word has length 4484
[2023-12-25 17:03:58,107 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 17:03:58,107 INFO  L495      AbstractCegarLoop]: Abstraction has 6936 states and 11578 transitions.
[2023-12-25 17:03:58,108 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 1121.0) internal successors, (4484), 4 states have internal predecessors, (4484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 17:03:58,108 INFO  L276                IsEmpty]: Start isEmpty. Operand 6936 states and 11578 transitions.
[2023-12-25 17:03:58,261 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 4485
[2023-12-25 17:03:58,261 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 17:03:58,263 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-12-25 17:03:58,333 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 17:03:58,472 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 17:03:58,473 INFO  L420      AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 17:03:58,473 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 17:03:58,474 INFO  L85        PathProgramCache]: Analyzing trace with hash 1254103801, now seen corresponding path program 1 times
[2023-12-25 17:03:58,474 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 17:03:58,474 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1299292934]
[2023-12-25 17:03:58,475 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 17:03:58,475 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 17:03:58,830 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 17:03:58,830 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [599944024]
[2023-12-25 17:03:58,831 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 17:03:58,831 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 17:03:58,831 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 17:03:58,832 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 17:03:58,848 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 17:04:04,757 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 17:04:04,898 INFO  L262         TraceCheckSpWp]: Trace formula consists of 25696 conjuncts, 6 conjunts are in the unsatisfiable core
[2023-12-25 17:04:04,962 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 17:04:05,034 INFO  L134       CoverageAnalysis]: Checked inductivity of 390 backedges. 390 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-25 17:04:05,035 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 17:04:05,035 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 17:04:05,035 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1299292934]
[2023-12-25 17:04:05,035 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 17:04:05,035 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [599944024]
[2023-12-25 17:04:05,035 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [599944024] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 17:04:05,035 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 17:04:05,036 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-12-25 17:04:05,036 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1246055826]
[2023-12-25 17:04:05,036 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 17:04:05,039 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-12-25 17:04:05,039 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 17:04:05,042 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-12-25 17:04:05,042 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-12-25 17:04:05,043 INFO  L87              Difference]: Start difference. First operand 6936 states and 11578 transitions. Second operand  has 4 states, 4 states have (on average 1121.0) internal successors, (4484), 4 states have internal predecessors, (4484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 17:04:05,167 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 17:04:05,167 INFO  L93              Difference]: Finished difference Result 13109 states and 21884 transitions.
[2023-12-25 17:04:05,167 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-12-25 17:04:05,169 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 1121.0) internal successors, (4484), 4 states have internal predecessors, (4484), 0 states have call successors, (0), 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 4484
[2023-12-25 17:04:05,170 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 17:04:05,178 INFO  L225             Difference]: With dead ends: 13109
[2023-12-25 17:04:05,178 INFO  L226             Difference]: Without dead ends: 6945
[2023-12-25 17:04:05,183 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 4483 GetRequests, 4481 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 17:04:05,184 INFO  L413           NwaCegarLoop]: 10605 mSDtfsCounter, 12 mSDsluCounter, 21200 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 31805 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 17:04:05,184 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 31805 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-12-25 17:04:05,189 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 6945 states.
[2023-12-25 17:04:05,236 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 6945 to 6937.
[2023-12-25 17:04:05,242 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 6937 states, 6936 states have (on average 1.669405997693195) internal successors, (11579), 6936 states have internal predecessors, (11579), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 17:04:05,250 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 6937 states to 6937 states and 11579 transitions.
[2023-12-25 17:04:05,250 INFO  L78                 Accepts]: Start accepts. Automaton has 6937 states and 11579 transitions. Word has length 4484
[2023-12-25 17:04:05,252 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 17:04:05,252 INFO  L495      AbstractCegarLoop]: Abstraction has 6937 states and 11579 transitions.
[2023-12-25 17:04:05,253 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 1121.0) internal successors, (4484), 4 states have internal predecessors, (4484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 17:04:05,253 INFO  L276                IsEmpty]: Start isEmpty. Operand 6937 states and 11579 transitions.
[2023-12-25 17:04:05,420 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 4485
[2023-12-25 17:04:05,420 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 17:04:05,422 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-12-25 17:04:05,488 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0
[2023-12-25 17:04:05,636 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 17:04:05,636 INFO  L420      AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 17:04:05,637 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 17:04:05,638 INFO  L85        PathProgramCache]: Analyzing trace with hash -536065685, now seen corresponding path program 1 times
[2023-12-25 17:04:05,638 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 17:04:05,638 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2052419974]
[2023-12-25 17:04:05,638 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 17:04:05,638 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 17:04:05,969 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 17:04:05,969 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [424639807]
[2023-12-25 17:04:05,970 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 17:04:05,970 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 17:04:05,970 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 17:04:05,986 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 17:04:06,010 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 17:04:11,790 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 17:04:11,935 INFO  L262         TraceCheckSpWp]: Trace formula consists of 25697 conjuncts, 6 conjunts are in the unsatisfiable core
[2023-12-25 17:04:11,992 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 17:04:12,203 INFO  L134       CoverageAnalysis]: Checked inductivity of 390 backedges. 390 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-25 17:04:12,203 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 17:04:12,204 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 17:04:12,204 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2052419974]
[2023-12-25 17:04:12,204 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 17:04:12,204 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [424639807]
[2023-12-25 17:04:12,204 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [424639807] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 17:04:12,204 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 17:04:12,204 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-12-25 17:04:12,204 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1577267414]
[2023-12-25 17:04:12,204 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 17:04:12,207 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-12-25 17:04:12,208 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 17:04:12,210 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-12-25 17:04:12,211 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-12-25 17:04:12,212 INFO  L87              Difference]: Start difference. First operand 6937 states and 11579 transitions. Second operand  has 4 states, 4 states have (on average 1121.0) internal successors, (4484), 4 states have internal predecessors, (4484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 17:04:12,335 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 17:04:12,335 INFO  L93              Difference]: Finished difference Result 13111 states and 21886 transitions.
[2023-12-25 17:04:12,335 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-12-25 17:04:12,337 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 1121.0) internal successors, (4484), 4 states have internal predecessors, (4484), 0 states have call successors, (0), 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 4484
[2023-12-25 17:04:12,338 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 17:04:12,346 INFO  L225             Difference]: With dead ends: 13111
[2023-12-25 17:04:12,346 INFO  L226             Difference]: Without dead ends: 6946
[2023-12-25 17:04:12,352 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 4483 GetRequests, 4481 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 17:04:12,354 INFO  L413           NwaCegarLoop]: 10605 mSDtfsCounter, 12 mSDsluCounter, 21200 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 31805 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 17:04:12,354 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 31805 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-12-25 17:04:12,360 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 6946 states.
[2023-12-25 17:04:12,421 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 6946 to 6938.
[2023-12-25 17:04:12,429 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 6938 states, 6937 states have (on average 1.6693094997837683) internal successors, (11580), 6937 states have internal predecessors, (11580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 17:04:12,437 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 6938 states to 6938 states and 11580 transitions.
[2023-12-25 17:04:12,438 INFO  L78                 Accepts]: Start accepts. Automaton has 6938 states and 11580 transitions. Word has length 4484
[2023-12-25 17:04:12,444 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 17:04:12,444 INFO  L495      AbstractCegarLoop]: Abstraction has 6938 states and 11580 transitions.
[2023-12-25 17:04:12,445 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 1121.0) internal successors, (4484), 4 states have internal predecessors, (4484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 17:04:12,445 INFO  L276                IsEmpty]: Start isEmpty. Operand 6938 states and 11580 transitions.
[2023-12-25 17:04:12,554 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 4485
[2023-12-25 17:04:12,554 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 17:04:12,556 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-12-25 17:04:12,620 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 17:04:12,764 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 17:04:12,764 INFO  L420      AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 17:04:12,765 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 17:04:12,766 INFO  L85        PathProgramCache]: Analyzing trace with hash 1069258041, now seen corresponding path program 1 times
[2023-12-25 17:04:12,766 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 17:04:12,766 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [932632651]
[2023-12-25 17:04:12,766 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 17:04:12,766 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 17:04:13,187 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 17:04:13,188 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1761374772]
[2023-12-25 17:04:13,188 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 17:04:13,189 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 17:04:13,189 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 17:04:13,190 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 17:04:13,191 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 17:04:19,231 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 17:04:19,377 INFO  L262         TraceCheckSpWp]: Trace formula consists of 25698 conjuncts, 6 conjunts are in the unsatisfiable core
[2023-12-25 17:04:19,434 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 17:04:19,621 INFO  L134       CoverageAnalysis]: Checked inductivity of 390 backedges. 390 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-25 17:04:19,621 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 17:04:19,622 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 17:04:19,622 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [932632651]
[2023-12-25 17:04:19,622 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 17:04:19,622 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1761374772]
[2023-12-25 17:04:19,622 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1761374772] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 17:04:19,622 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 17:04:19,622 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-12-25 17:04:19,622 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [881397405]
[2023-12-25 17:04:19,623 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 17:04:19,626 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-12-25 17:04:19,626 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 17:04:19,629 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-12-25 17:04:19,629 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-12-25 17:04:19,631 INFO  L87              Difference]: Start difference. First operand 6938 states and 11580 transitions. Second operand  has 4 states, 4 states have (on average 1121.0) internal successors, (4484), 4 states have internal predecessors, (4484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 17:04:19,753 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 17:04:19,754 INFO  L93              Difference]: Finished difference Result 13113 states and 21888 transitions.
[2023-12-25 17:04:19,754 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-12-25 17:04:19,755 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 1121.0) internal successors, (4484), 4 states have internal predecessors, (4484), 0 states have call successors, (0), 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 4484
[2023-12-25 17:04:19,758 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 17:04:19,766 INFO  L225             Difference]: With dead ends: 13113
[2023-12-25 17:04:19,766 INFO  L226             Difference]: Without dead ends: 6947
[2023-12-25 17:04:19,774 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 4483 GetRequests, 4481 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 17:04:19,775 INFO  L413           NwaCegarLoop]: 10605 mSDtfsCounter, 12 mSDsluCounter, 21200 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 31805 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 17:04:19,775 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 31805 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-12-25 17:04:19,782 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 6947 states.
[2023-12-25 17:04:19,842 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 6947 to 6939.
[2023-12-25 17:04:19,849 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 6939 states, 6938 states have (on average 1.6692130296915537) internal successors, (11581), 6938 states have internal predecessors, (11581), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 17:04:19,858 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 6939 states to 6939 states and 11581 transitions.
[2023-12-25 17:04:19,858 INFO  L78                 Accepts]: Start accepts. Automaton has 6939 states and 11581 transitions. Word has length 4484
[2023-12-25 17:04:19,861 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 17:04:19,861 INFO  L495      AbstractCegarLoop]: Abstraction has 6939 states and 11581 transitions.
[2023-12-25 17:04:19,862 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 1121.0) internal successors, (4484), 4 states have internal predecessors, (4484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 17:04:19,862 INFO  L276                IsEmpty]: Start isEmpty. Operand 6939 states and 11581 transitions.
[2023-12-25 17:04:19,965 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 4485
[2023-12-25 17:04:19,966 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 17:04:19,967 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:04:20,048 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 17:04:20,181 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 17:04:20,182 INFO  L420      AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 17:04:20,182 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 17:04:20,183 INFO  L85        PathProgramCache]: Analyzing trace with hash -492655097, now seen corresponding path program 1 times
[2023-12-25 17:04:20,183 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 17:04:20,183 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1701688498]
[2023-12-25 17:04:20,184 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 17:04:20,184 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 17:04:20,546 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 17:04:20,546 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [775146189]
[2023-12-25 17:04:20,547 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 17:04:20,547 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 17:04:20,547 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 17:04:20,564 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 17:04:20,577 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 17:04:26,663 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 17:04:26,824 INFO  L262         TraceCheckSpWp]: Trace formula consists of 25699 conjuncts, 6 conjunts are in the unsatisfiable core
[2023-12-25 17:04:26,876 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 17:04:26,937 INFO  L134       CoverageAnalysis]: Checked inductivity of 390 backedges. 390 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-25 17:04:26,937 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 17:04:26,937 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 17:04:26,937 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1701688498]
[2023-12-25 17:04:26,937 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 17:04:26,937 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [775146189]
[2023-12-25 17:04:26,937 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [775146189] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 17:04:26,937 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 17:04:26,937 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-12-25 17:04:26,938 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [66366811]
[2023-12-25 17:04:26,938 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 17:04:26,941 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-12-25 17:04:26,941 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 17:04:26,944 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-12-25 17:04:26,944 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-12-25 17:04:26,945 INFO  L87              Difference]: Start difference. First operand 6939 states and 11581 transitions. Second operand  has 4 states, 4 states have (on average 1121.0) internal successors, (4484), 4 states have internal predecessors, (4484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 17:04:27,066 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 17:04:27,066 INFO  L93              Difference]: Finished difference Result 13115 states and 21890 transitions.
[2023-12-25 17:04:27,067 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-12-25 17:04:27,068 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 1121.0) internal successors, (4484), 4 states have internal predecessors, (4484), 0 states have call successors, (0), 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 4484
[2023-12-25 17:04:27,070 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 17:04:27,078 INFO  L225             Difference]: With dead ends: 13115
[2023-12-25 17:04:27,079 INFO  L226             Difference]: Without dead ends: 6948
[2023-12-25 17:04:27,084 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 4483 GetRequests, 4481 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 17:04:27,085 INFO  L413           NwaCegarLoop]: 10605 mSDtfsCounter, 12 mSDsluCounter, 21200 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 31805 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 17:04:27,085 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 31805 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-12-25 17:04:27,091 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 6948 states.
[2023-12-25 17:04:27,141 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 6948 to 6940.
[2023-12-25 17:04:27,147 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 6940 states, 6939 states have (on average 1.669116587404525) internal successors, (11582), 6939 states have internal predecessors, (11582), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 17:04:27,156 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 6940 states to 6940 states and 11582 transitions.
[2023-12-25 17:04:27,156 INFO  L78                 Accepts]: Start accepts. Automaton has 6940 states and 11582 transitions. Word has length 4484
[2023-12-25 17:04:27,158 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 17:04:27,158 INFO  L495      AbstractCegarLoop]: Abstraction has 6940 states and 11582 transitions.
[2023-12-25 17:04:27,159 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 1121.0) internal successors, (4484), 4 states have internal predecessors, (4484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 17:04:27,159 INFO  L276                IsEmpty]: Start isEmpty. Operand 6940 states and 11582 transitions.
[2023-12-25 17:04:27,340 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 4485
[2023-12-25 17:04:27,340 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 17:04:27,343 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-12-25 17:04:27,412 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 17:04:27,568 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 17:04:27,568 INFO  L420      AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 17:04:27,569 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 17:04:27,570 INFO  L85        PathProgramCache]: Analyzing trace with hash 1172046549, now seen corresponding path program 1 times
[2023-12-25 17:04:27,570 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 17:04:27,570 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1491159688]
[2023-12-25 17:04:27,570 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 17:04:27,570 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 17:04:27,916 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 17:04:27,916 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1928232990]
[2023-12-25 17:04:27,917 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 17:04:27,917 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 17:04:27,917 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 17:04:27,918 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 17:04:27,938 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 17:04:33,926 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 17:04:34,090 INFO  L262         TraceCheckSpWp]: Trace formula consists of 25700 conjuncts, 6 conjunts are in the unsatisfiable core
[2023-12-25 17:04:34,144 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 17:04:34,205 INFO  L134       CoverageAnalysis]: Checked inductivity of 390 backedges. 390 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-25 17:04:34,205 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 17:04:34,205 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 17:04:34,205 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1491159688]
[2023-12-25 17:04:34,205 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 17:04:34,205 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1928232990]
[2023-12-25 17:04:34,205 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1928232990] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 17:04:34,205 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 17:04:34,206 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-12-25 17:04:34,206 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [424649730]
[2023-12-25 17:04:34,206 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 17:04:34,209 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-12-25 17:04:34,209 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 17:04:34,212 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-12-25 17:04:34,213 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-12-25 17:04:34,213 INFO  L87              Difference]: Start difference. First operand 6940 states and 11582 transitions. Second operand  has 4 states, 4 states have (on average 1121.0) internal successors, (4484), 4 states have internal predecessors, (4484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 17:04:34,329 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 17:04:34,329 INFO  L93              Difference]: Finished difference Result 13117 states and 21892 transitions.
[2023-12-25 17:04:34,329 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-12-25 17:04:34,330 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 1121.0) internal successors, (4484), 4 states have internal predecessors, (4484), 0 states have call successors, (0), 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 4484
[2023-12-25 17:04:34,333 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 17:04:34,339 INFO  L225             Difference]: With dead ends: 13117
[2023-12-25 17:04:34,339 INFO  L226             Difference]: Without dead ends: 6949
[2023-12-25 17:04:34,344 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 4483 GetRequests, 4481 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 17:04:34,344 INFO  L413           NwaCegarLoop]: 10605 mSDtfsCounter, 12 mSDsluCounter, 21200 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 31805 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 17:04:34,344 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 31805 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-12-25 17:04:34,351 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 6949 states.
[2023-12-25 17:04:34,403 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 6949 to 6941.
[2023-12-25 17:04:34,409 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 6941 states, 6940 states have (on average 1.6690201729106628) internal successors, (11583), 6940 states have internal predecessors, (11583), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 17:04:34,418 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 6941 states to 6941 states and 11583 transitions.
[2023-12-25 17:04:34,418 INFO  L78                 Accepts]: Start accepts. Automaton has 6941 states and 11583 transitions. Word has length 4484
[2023-12-25 17:04:34,420 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 17:04:34,420 INFO  L495      AbstractCegarLoop]: Abstraction has 6941 states and 11583 transitions.
[2023-12-25 17:04:34,421 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 1121.0) internal successors, (4484), 4 states have internal predecessors, (4484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 17:04:34,421 INFO  L276                IsEmpty]: Start isEmpty. Operand 6941 states and 11583 transitions.
[2023-12-25 17:04:34,596 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 4485
[2023-12-25 17:04:34,596 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 17:04:34,598 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-12-25 17:04:34,668 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 17:04:34,812 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 17:04:34,813 INFO  L420      AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 17:04:34,813 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 17:04:34,814 INFO  L85        PathProgramCache]: Analyzing trace with hash 1860501411, now seen corresponding path program 1 times
[2023-12-25 17:04:34,814 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 17:04:34,814 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1499059824]
[2023-12-25 17:04:34,815 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 17:04:34,815 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 17:04:35,152 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 17:04:35,152 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2127084010]
[2023-12-25 17:04:35,153 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 17:04:35,153 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 17:04:35,154 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 17:04:35,170 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 17:04:35,193 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 17:04:41,090 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 17:04:41,255 INFO  L262         TraceCheckSpWp]: Trace formula consists of 25701 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-12-25 17:04:41,460 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 17:04:41,656 INFO  L134       CoverageAnalysis]: Checked inductivity of 390 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 382 trivial. 0 not checked.
[2023-12-25 17:04:41,656 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 17:04:41,656 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 17:04:41,656 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1499059824]
[2023-12-25 17:04:41,656 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 17:04:41,656 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2127084010]
[2023-12-25 17:04:41,656 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [2127084010] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 17:04:41,657 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 17:04:41,657 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-12-25 17:04:41,657 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [661439014]
[2023-12-25 17:04:41,657 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 17:04:41,660 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-12-25 17:04:41,660 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 17:04:41,663 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-12-25 17:04:41,663 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-12-25 17:04:41,663 INFO  L87              Difference]: Start difference. First operand 6941 states and 11583 transitions. Second operand  has 7 states, 7 states have (on average 586.1428571428571) internal successors, (4103), 7 states have internal predecessors, (4103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 17:04:42,001 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 17:04:42,001 INFO  L93              Difference]: Finished difference Result 19274 states and 32169 transitions.
[2023-12-25 17:04:42,001 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-12-25 17:04:42,002 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 586.1428571428571) internal successors, (4103), 7 states have internal predecessors, (4103), 0 states have call successors, (0), 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 4484
[2023-12-25 17:04:42,005 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 17:04:42,017 INFO  L225             Difference]: With dead ends: 19274
[2023-12-25 17:04:42,018 INFO  L226             Difference]: Without dead ends: 13104
[2023-12-25 17:04:42,027 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 4493 GetRequests, 4481 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-12-25 17:04:42,028 INFO  L413           NwaCegarLoop]: 11557 mSDtfsCounter, 30069 mSDsluCounter, 45257 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30069 SdHoareTripleChecker+Valid, 56814 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-12-25 17:04:42,028 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [30069 Valid, 56814 Invalid, 48 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-12-25 17:04:42,041 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 13104 states.
[2023-12-25 17:04:42,119 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 13104 to 6943.
[2023-12-25 17:04:42,125 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 6943 states, 6942 states have (on average 1.6688274272543935) internal successors, (11585), 6942 states have internal predecessors, (11585), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 17:04:42,132 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 6943 states to 6943 states and 11585 transitions.
[2023-12-25 17:04:42,133 INFO  L78                 Accepts]: Start accepts. Automaton has 6943 states and 11585 transitions. Word has length 4484
[2023-12-25 17:04:42,136 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 17:04:42,136 INFO  L495      AbstractCegarLoop]: Abstraction has 6943 states and 11585 transitions.
[2023-12-25 17:04:42,137 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 586.1428571428571) internal successors, (4103), 7 states have internal predecessors, (4103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 17:04:42,137 INFO  L276                IsEmpty]: Start isEmpty. Operand 6943 states and 11585 transitions.
[2023-12-25 17:04:42,355 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 4486
[2023-12-25 17:04:42,356 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 17:04:42,357 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-12-25 17:04:42,432 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0
[2023-12-25 17:04:42,584 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 17:04:42,585 INFO  L420      AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 17:04:42,585 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 17:04:42,586 INFO  L85        PathProgramCache]: Analyzing trace with hash 1642168851, now seen corresponding path program 1 times
[2023-12-25 17:04:42,586 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 17:04:42,586 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1296853468]
[2023-12-25 17:04:42,586 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 17:04:42,587 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 17:04:42,932 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 17:04:42,932 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1057213681]
[2023-12-25 17:04:42,933 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 17:04:42,933 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 17:04:42,933 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 17:04:42,934 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 17:04:42,939 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 17:04:49,069 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 17:04:49,225 INFO  L262         TraceCheckSpWp]: Trace formula consists of 25704 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-12-25 17:04:49,280 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 17:04:49,481 INFO  L134       CoverageAnalysis]: Checked inductivity of 390 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked.
[2023-12-25 17:04:49,481 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 17:04:49,481 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 17:04:49,481 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1296853468]
[2023-12-25 17:04:49,481 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 17:04:49,481 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1057213681]
[2023-12-25 17:04:49,481 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1057213681] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 17:04:49,481 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 17:04:49,482 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-12-25 17:04:49,482 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1433321242]
[2023-12-25 17:04:49,482 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 17:04:49,485 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-12-25 17:04:49,485 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 17:04:49,487 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-12-25 17:04:49,487 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-12-25 17:04:49,488 INFO  L87              Difference]: Start difference. First operand 6943 states and 11585 transitions. Second operand  has 7 states, 7 states have (on average 586.5714285714286) internal successors, (4106), 7 states have internal predecessors, (4106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 17:04:49,800 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 17:04:49,801 INFO  L93              Difference]: Finished difference Result 19280 states and 32175 transitions.
[2023-12-25 17:04:49,801 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-12-25 17:04:49,802 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 586.5714285714286) internal successors, (4106), 7 states have internal predecessors, (4106), 0 states have call successors, (0), 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 4485
[2023-12-25 17:04:49,805 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 17:04:49,815 INFO  L225             Difference]: With dead ends: 19280
[2023-12-25 17:04:49,815 INFO  L226             Difference]: Without dead ends: 13105
[2023-12-25 17:04:49,822 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 4494 GetRequests, 4482 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-12-25 17:04:49,823 INFO  L413           NwaCegarLoop]: 11552 mSDtfsCounter, 30068 mSDsluCounter, 45242 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30068 SdHoareTripleChecker+Valid, 56794 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-12-25 17:04:49,825 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [30068 Valid, 56794 Invalid, 48 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-12-25 17:04:49,834 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 13105 states.
[2023-12-25 17:04:49,972 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 13105 to 6945.
[2023-12-25 17:04:49,977 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 6945 states, 6944 states have (on average 1.6686347926267282) internal successors, (11587), 6944 states have internal predecessors, (11587), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 17:04:49,983 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 6945 states to 6945 states and 11587 transitions.
[2023-12-25 17:04:49,983 INFO  L78                 Accepts]: Start accepts. Automaton has 6945 states and 11587 transitions. Word has length 4485
[2023-12-25 17:04:49,985 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 17:04:49,985 INFO  L495      AbstractCegarLoop]: Abstraction has 6945 states and 11587 transitions.
[2023-12-25 17:04:49,986 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 586.5714285714286) internal successors, (4106), 7 states have internal predecessors, (4106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 17:04:49,986 INFO  L276                IsEmpty]: Start isEmpty. Operand 6945 states and 11587 transitions.
[2023-12-25 17:04:50,087 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 4487
[2023-12-25 17:04:50,087 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 17:04:50,089 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-12-25 17:04:50,158 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0
[2023-12-25 17:04:50,316 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 17:04:50,316 INFO  L420      AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 17:04:50,317 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 17:04:50,318 INFO  L85        PathProgramCache]: Analyzing trace with hash -1092383031, now seen corresponding path program 1 times
[2023-12-25 17:04:50,318 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 17:04:50,318 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [965233199]
[2023-12-25 17:04:50,318 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 17:04:50,318 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 17:04:50,709 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 17:04:50,709 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1123430478]
[2023-12-25 17:04:50,710 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 17:04:50,710 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 17:04:50,710 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 17:04:50,711 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 17:04:50,740 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 17:04:56,674 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 17:04:56,847 INFO  L262         TraceCheckSpWp]: Trace formula consists of 25707 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-12-25 17:04:56,910 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 17:04:57,099 INFO  L134       CoverageAnalysis]: Checked inductivity of 390 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 378 trivial. 0 not checked.
[2023-12-25 17:04:57,100 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 17:04:57,100 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 17:04:57,100 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [965233199]
[2023-12-25 17:04:57,100 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 17:04:57,100 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1123430478]
[2023-12-25 17:04:57,100 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1123430478] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 17:04:57,100 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 17:04:57,100 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-12-25 17:04:57,101 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [716902987]
[2023-12-25 17:04:57,101 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 17:04:57,104 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-12-25 17:04:57,104 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 17:04:57,107 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-12-25 17:04:57,107 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-12-25 17:04:57,107 INFO  L87              Difference]: Start difference. First operand 6945 states and 11587 transitions. Second operand  has 7 states, 7 states have (on average 587.0) internal successors, (4109), 7 states have internal predecessors, (4109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 17:04:57,516 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 17:04:57,516 INFO  L93              Difference]: Finished difference Result 19286 states and 32181 transitions.
[2023-12-25 17:04:57,516 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-12-25 17:04:57,517 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 587.0) internal successors, (4109), 7 states have internal predecessors, (4109), 0 states have call successors, (0), 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 4486
[2023-12-25 17:04:57,520 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 17:04:57,529 INFO  L225             Difference]: With dead ends: 19286
[2023-12-25 17:04:57,529 INFO  L226             Difference]: Without dead ends: 13106
[2023-12-25 17:04:57,534 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 4495 GetRequests, 4483 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-12-25 17:04:57,534 INFO  L413           NwaCegarLoop]: 11547 mSDtfsCounter, 30067 mSDsluCounter, 45227 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30067 SdHoareTripleChecker+Valid, 56774 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-12-25 17:04:57,534 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [30067 Valid, 56774 Invalid, 48 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-12-25 17:04:57,541 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 13106 states.
[2023-12-25 17:04:57,604 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 13106 to 6947.
[2023-12-25 17:04:57,609 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 6947 states, 6946 states have (on average 1.6684422689317593) internal successors, (11589), 6946 states have internal predecessors, (11589), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 17:04:57,616 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 6947 states to 6947 states and 11589 transitions.
[2023-12-25 17:04:57,616 INFO  L78                 Accepts]: Start accepts. Automaton has 6947 states and 11589 transitions. Word has length 4486
[2023-12-25 17:04:57,618 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 17:04:57,618 INFO  L495      AbstractCegarLoop]: Abstraction has 6947 states and 11589 transitions.
[2023-12-25 17:04:57,619 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 587.0) internal successors, (4109), 7 states have internal predecessors, (4109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 17:04:57,619 INFO  L276                IsEmpty]: Start isEmpty. Operand 6947 states and 11589 transitions.
[2023-12-25 17:04:57,720 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 4488
[2023-12-25 17:04:57,720 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 17:04:57,722 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:04:57,793 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0
[2023-12-25 17:04:57,948 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 17:04:57,948 INFO  L420      AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 17:04:57,949 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 17:04:57,950 INFO  L85        PathProgramCache]: Analyzing trace with hash -874036881, now seen corresponding path program 1 times
[2023-12-25 17:04:57,950 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 17:04:57,950 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [648999502]
[2023-12-25 17:04:57,950 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 17:04:57,950 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 17:04:58,346 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 17:04:58,346 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [321985828]
[2023-12-25 17:04:58,347 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 17:04:58,347 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 17:04:58,347 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 17:04:58,348 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 17:04:58,382 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 17:05:04,224 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 17:05:04,378 INFO  L262         TraceCheckSpWp]: Trace formula consists of 25711 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-12-25 17:05:04,434 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 17:05:04,616 INFO  L134       CoverageAnalysis]: Checked inductivity of 390 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 376 trivial. 0 not checked.
[2023-12-25 17:05:04,616 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 17:05:04,616 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 17:05:04,617 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [648999502]
[2023-12-25 17:05:04,617 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 17:05:04,617 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [321985828]
[2023-12-25 17:05:04,617 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [321985828] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 17:05:04,617 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 17:05:04,617 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-12-25 17:05:04,617 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1366464052]
[2023-12-25 17:05:04,617 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 17:05:04,620 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-12-25 17:05:04,620 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 17:05:04,623 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-12-25 17:05:04,623 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-12-25 17:05:04,623 INFO  L87              Difference]: Start difference. First operand 6947 states and 11589 transitions. Second operand  has 7 states, 7 states have (on average 587.4285714285714) internal successors, (4112), 7 states have internal predecessors, (4112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 17:05:05,057 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 17:05:05,057 INFO  L93              Difference]: Finished difference Result 19292 states and 32187 transitions.
[2023-12-25 17:05:05,057 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-12-25 17:05:05,058 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 587.4285714285714) internal successors, (4112), 7 states have internal predecessors, (4112), 0 states have call successors, (0), 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 4487
[2023-12-25 17:05:05,061 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 17:05:05,069 INFO  L225             Difference]: With dead ends: 19292
[2023-12-25 17:05:05,069 INFO  L226             Difference]: Without dead ends: 13107
[2023-12-25 17:05:05,072 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 4496 GetRequests, 4484 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-12-25 17:05:05,072 INFO  L413           NwaCegarLoop]: 11542 mSDtfsCounter, 30066 mSDsluCounter, 45212 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30066 SdHoareTripleChecker+Valid, 56754 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-12-25 17:05:05,073 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [30066 Valid, 56754 Invalid, 48 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-12-25 17:05:05,080 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 13107 states.
[2023-12-25 17:05:05,144 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 13107 to 6949.
[2023-12-25 17:05:05,150 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 6949 states, 6948 states have (on average 1.6682498560736903) internal successors, (11591), 6948 states have internal predecessors, (11591), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 17:05:05,157 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 6949 states to 6949 states and 11591 transitions.
[2023-12-25 17:05:05,157 INFO  L78                 Accepts]: Start accepts. Automaton has 6949 states and 11591 transitions. Word has length 4487
[2023-12-25 17:05:05,159 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 17:05:05,159 INFO  L495      AbstractCegarLoop]: Abstraction has 6949 states and 11591 transitions.
[2023-12-25 17:05:05,159 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 587.4285714285714) internal successors, (4112), 7 states have internal predecessors, (4112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 17:05:05,159 INFO  L276                IsEmpty]: Start isEmpty. Operand 6949 states and 11591 transitions.
[2023-12-25 17:05:05,261 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 4489
[2023-12-25 17:05:05,262 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 17:05:05,263 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-12-25 17:05:05,334 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 17:05:05,488 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 17:05:05,489 INFO  L420      AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 17:05:05,489 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 17:05:05,490 INFO  L85        PathProgramCache]: Analyzing trace with hash 1161593713, now seen corresponding path program 1 times
[2023-12-25 17:05:05,490 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 17:05:05,490 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1874269742]
[2023-12-25 17:05:05,490 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 17:05:05,490 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 17:05:05,824 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 17:05:05,824 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [921086178]
[2023-12-25 17:05:05,825 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 17:05:05,825 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 17:05:05,825 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 17:05:05,842 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 17:05:05,869 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 17:05:11,893 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 17:05:12,048 INFO  L262         TraceCheckSpWp]: Trace formula consists of 25714 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-12-25 17:05:12,104 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 17:05:12,282 INFO  L134       CoverageAnalysis]: Checked inductivity of 390 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 374 trivial. 0 not checked.
[2023-12-25 17:05:12,283 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 17:05:12,283 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 17:05:12,283 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1874269742]
[2023-12-25 17:05:12,283 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 17:05:12,283 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [921086178]
[2023-12-25 17:05:12,283 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [921086178] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 17:05:12,283 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 17:05:12,283 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-12-25 17:05:12,283 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1434476571]
[2023-12-25 17:05:12,283 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 17:05:12,286 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-12-25 17:05:12,286 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 17:05:12,289 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-12-25 17:05:12,289 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-12-25 17:05:12,289 INFO  L87              Difference]: Start difference. First operand 6949 states and 11591 transitions. Second operand  has 7 states, 7 states have (on average 587.8571428571429) internal successors, (4115), 7 states have internal predecessors, (4115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 17:05:12,595 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 17:05:12,595 INFO  L93              Difference]: Finished difference Result 19298 states and 32193 transitions.
[2023-12-25 17:05:12,596 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-12-25 17:05:12,597 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 587.8571428571429) internal successors, (4115), 7 states have internal predecessors, (4115), 0 states have call successors, (0), 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 4488
[2023-12-25 17:05:12,599 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 17:05:12,610 INFO  L225             Difference]: With dead ends: 19298
[2023-12-25 17:05:12,610 INFO  L226             Difference]: Without dead ends: 13108
[2023-12-25 17:05:12,618 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 4497 GetRequests, 4485 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-12-25 17:05:12,618 INFO  L413           NwaCegarLoop]: 11537 mSDtfsCounter, 30065 mSDsluCounter, 45197 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30065 SdHoareTripleChecker+Valid, 56734 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-12-25 17:05:12,618 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [30065 Valid, 56734 Invalid, 48 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-12-25 17:05:12,626 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 13108 states.
[2023-12-25 17:05:12,771 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 13108 to 6951.
[2023-12-25 17:05:12,776 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 6951 states, 6950 states have (on average 1.6680575539568345) internal successors, (11593), 6950 states have internal predecessors, (11593), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 17:05:12,782 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 6951 states to 6951 states and 11593 transitions.
[2023-12-25 17:05:12,782 INFO  L78                 Accepts]: Start accepts. Automaton has 6951 states and 11593 transitions. Word has length 4488
[2023-12-25 17:05:12,783 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 17:05:12,783 INFO  L495      AbstractCegarLoop]: Abstraction has 6951 states and 11593 transitions.
[2023-12-25 17:05:12,784 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 587.8571428571429) internal successors, (4115), 7 states have internal predecessors, (4115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 17:05:12,784 INFO  L276                IsEmpty]: Start isEmpty. Operand 6951 states and 11593 transitions.
[2023-12-25 17:05:12,887 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 4490
[2023-12-25 17:05:12,887 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 17:05:12,890 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-12-25 17:05:12,958 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 17:05:13,104 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 17:05:13,104 INFO  L420      AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 17:05:13,105 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 17:05:13,105 INFO  L85        PathProgramCache]: Analyzing trace with hash -1971246263, now seen corresponding path program 1 times
[2023-12-25 17:05:13,106 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 17:05:13,106 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [856072744]
[2023-12-25 17:05:13,106 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 17:05:13,106 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 17:05:13,453 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 17:05:13,453 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1295726501]
[2023-12-25 17:05:13,454 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 17:05:13,454 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 17:05:13,454 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 17:05:13,455 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 17:05:13,479 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 17:05:19,461 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 17:05:19,612 INFO  L262         TraceCheckSpWp]: Trace formula consists of 25717 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-12-25 17:05:19,666 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 17:05:19,841 INFO  L134       CoverageAnalysis]: Checked inductivity of 390 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 372 trivial. 0 not checked.
[2023-12-25 17:05:19,841 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 17:05:19,841 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 17:05:19,841 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [856072744]
[2023-12-25 17:05:19,841 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 17:05:19,841 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1295726501]
[2023-12-25 17:05:19,842 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1295726501] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 17:05:19,842 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 17:05:19,842 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-12-25 17:05:19,842 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1081889116]
[2023-12-25 17:05:19,842 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 17:05:19,845 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-12-25 17:05:19,845 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 17:05:19,847 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-12-25 17:05:19,847 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-12-25 17:05:19,847 INFO  L87              Difference]: Start difference. First operand 6951 states and 11593 transitions. Second operand  has 7 states, 7 states have (on average 588.2857142857143) internal successors, (4118), 7 states have internal predecessors, (4118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 17:05:20,152 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 17:05:20,152 INFO  L93              Difference]: Finished difference Result 19304 states and 32199 transitions.
[2023-12-25 17:05:20,152 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-12-25 17:05:20,153 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 588.2857142857143) internal successors, (4118), 7 states have internal predecessors, (4118), 0 states have call successors, (0), 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 4489
[2023-12-25 17:05:20,156 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 17:05:20,168 INFO  L225             Difference]: With dead ends: 19304
[2023-12-25 17:05:20,168 INFO  L226             Difference]: Without dead ends: 13109
[2023-12-25 17:05:20,175 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 4498 GetRequests, 4486 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-12-25 17:05:20,175 INFO  L413           NwaCegarLoop]: 11532 mSDtfsCounter, 30064 mSDsluCounter, 45182 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30064 SdHoareTripleChecker+Valid, 56714 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-12-25 17:05:20,176 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [30064 Valid, 56714 Invalid, 48 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-12-25 17:05:20,185 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 13109 states.
[2023-12-25 17:05:20,252 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 13109 to 6953.
[2023-12-25 17:05:20,259 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 6953 states, 6952 states have (on average 1.6678653624856157) internal successors, (11595), 6952 states have internal predecessors, (11595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 17:05:20,266 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 6953 states to 6953 states and 11595 transitions.
[2023-12-25 17:05:20,266 INFO  L78                 Accepts]: Start accepts. Automaton has 6953 states and 11595 transitions. Word has length 4489
[2023-12-25 17:05:20,269 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 17:05:20,269 INFO  L495      AbstractCegarLoop]: Abstraction has 6953 states and 11595 transitions.
[2023-12-25 17:05:20,270 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 588.2857142857143) internal successors, (4118), 7 states have internal predecessors, (4118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 17:05:20,270 INFO  L276                IsEmpty]: Start isEmpty. Operand 6953 states and 11595 transitions.
[2023-12-25 17:05:20,439 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 4491
[2023-12-25 17:05:20,439 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 17:05:20,440 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-12-25 17:05:20,521 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0
[2023-12-25 17:05:20,656 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 17:05:20,656 INFO  L420      AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 17:05:20,657 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 17:05:20,657 INFO  L85        PathProgramCache]: Analyzing trace with hash 1431910039, now seen corresponding path program 1 times
[2023-12-25 17:05:20,657 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 17:05:20,657 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [506232974]
[2023-12-25 17:05:20,658 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 17:05:20,658 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 17:05:21,003 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 17:05:21,003 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1863606381]
[2023-12-25 17:05:21,004 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 17:05:21,004 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 17:05:21,004 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 17:05:21,005 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 17:05:21,030 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 17:05:26,909 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 17:05:27,072 INFO  L262         TraceCheckSpWp]: Trace formula consists of 25720 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-12-25 17:05:27,125 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 17:05:27,310 INFO  L134       CoverageAnalysis]: Checked inductivity of 390 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 370 trivial. 0 not checked.
[2023-12-25 17:05:27,310 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 17:05:27,310 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 17:05:27,311 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [506232974]
[2023-12-25 17:05:27,311 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 17:05:27,311 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1863606381]
[2023-12-25 17:05:27,311 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1863606381] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 17:05:27,311 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 17:05:27,311 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-12-25 17:05:27,311 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1160748563]
[2023-12-25 17:05:27,311 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 17:05:27,313 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-12-25 17:05:27,314 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 17:05:27,315 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-12-25 17:05:27,315 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-12-25 17:05:27,316 INFO  L87              Difference]: Start difference. First operand 6953 states and 11595 transitions. Second operand  has 7 states, 7 states have (on average 588.7142857142857) internal successors, (4121), 7 states have internal predecessors, (4121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 17:05:27,705 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 17:05:27,705 INFO  L93              Difference]: Finished difference Result 19310 states and 32205 transitions.
[2023-12-25 17:05:27,706 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-12-25 17:05:27,706 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 588.7142857142857) internal successors, (4121), 7 states have internal predecessors, (4121), 0 states have call successors, (0), 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 4490
[2023-12-25 17:05:27,709 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 17:05:27,720 INFO  L225             Difference]: With dead ends: 19310
[2023-12-25 17:05:27,720 INFO  L226             Difference]: Without dead ends: 13110
[2023-12-25 17:05:27,726 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 4499 GetRequests, 4487 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-12-25 17:05:27,727 INFO  L413           NwaCegarLoop]: 11527 mSDtfsCounter, 30063 mSDsluCounter, 45167 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30063 SdHoareTripleChecker+Valid, 56694 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-12-25 17:05:27,727 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [30063 Valid, 56694 Invalid, 48 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-12-25 17:05:27,735 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 13110 states.
[2023-12-25 17:05:27,797 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 13110 to 6955.
[2023-12-25 17:05:27,803 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 6955 states, 6954 states have (on average 1.6676732815645672) internal successors, (11597), 6954 states have internal predecessors, (11597), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 17:05:27,810 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 6955 states to 6955 states and 11597 transitions.
[2023-12-25 17:05:27,810 INFO  L78                 Accepts]: Start accepts. Automaton has 6955 states and 11597 transitions. Word has length 4490
[2023-12-25 17:05:27,812 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 17:05:27,812 INFO  L495      AbstractCegarLoop]: Abstraction has 6955 states and 11597 transitions.
[2023-12-25 17:05:27,813 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 588.7142857142857) internal successors, (4121), 7 states have internal predecessors, (4121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 17:05:27,813 INFO  L276                IsEmpty]: Start isEmpty. Operand 6955 states and 11597 transitions.
[2023-12-25 17:05:27,915 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 4492
[2023-12-25 17:05:27,915 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 17:05:27,916 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-12-25 17:05:27,993 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0
[2023-12-25 17:05:28,136 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 17:05:28,136 INFO  L420      AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 17:05:28,137 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 17:05:28,137 INFO  L85        PathProgramCache]: Analyzing trace with hash -98389083, now seen corresponding path program 1 times
[2023-12-25 17:05:28,137 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 17:05:28,137 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1660823916]
[2023-12-25 17:05:28,138 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 17:05:28,138 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 17:05:28,612 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 17:05:28,613 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [553460693]
[2023-12-25 17:05:28,614 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 17:05:28,614 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 17:05:28,614 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 17:05:28,629 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 17:05:28,633 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 17:05:34,552 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 17:05:34,725 INFO  L262         TraceCheckSpWp]: Trace formula consists of 25724 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-12-25 17:05:34,784 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 17:05:34,962 INFO  L134       CoverageAnalysis]: Checked inductivity of 390 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 368 trivial. 0 not checked.
[2023-12-25 17:05:34,962 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 17:05:34,962 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 17:05:34,962 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1660823916]
[2023-12-25 17:05:34,962 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 17:05:34,962 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [553460693]
[2023-12-25 17:05:34,962 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [553460693] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 17:05:34,962 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 17:05:34,963 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-12-25 17:05:34,963 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [268759864]
[2023-12-25 17:05:34,963 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 17:05:34,965 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-12-25 17:05:34,965 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 17:05:34,967 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-12-25 17:05:34,967 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-12-25 17:05:34,968 INFO  L87              Difference]: Start difference. First operand 6955 states and 11597 transitions. Second operand  has 7 states, 7 states have (on average 589.1428571428571) internal successors, (4124), 7 states have internal predecessors, (4124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 17:05:35,272 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 17:05:35,272 INFO  L93              Difference]: Finished difference Result 19316 states and 32211 transitions.
[2023-12-25 17:05:35,273 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-12-25 17:05:35,274 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 589.1428571428571) internal successors, (4124), 7 states have internal predecessors, (4124), 0 states have call successors, (0), 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 4491
[2023-12-25 17:05:35,276 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 17:05:35,288 INFO  L225             Difference]: With dead ends: 19316
[2023-12-25 17:05:35,288 INFO  L226             Difference]: Without dead ends: 13111
[2023-12-25 17:05:35,295 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 4500 GetRequests, 4488 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-12-25 17:05:35,295 INFO  L413           NwaCegarLoop]: 11522 mSDtfsCounter, 30062 mSDsluCounter, 45152 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30062 SdHoareTripleChecker+Valid, 56674 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-12-25 17:05:35,295 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [30062 Valid, 56674 Invalid, 48 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-12-25 17:05:35,304 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 13111 states.
[2023-12-25 17:05:35,369 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 13111 to 6957.
[2023-12-25 17:05:35,374 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 6957 states, 6956 states have (on average 1.6674813110983324) internal successors, (11599), 6956 states have internal predecessors, (11599), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 17:05:35,381 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 6957 states to 6957 states and 11599 transitions.
[2023-12-25 17:05:35,381 INFO  L78                 Accepts]: Start accepts. Automaton has 6957 states and 11599 transitions. Word has length 4491
[2023-12-25 17:05:35,383 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 17:05:35,383 INFO  L495      AbstractCegarLoop]: Abstraction has 6957 states and 11599 transitions.
[2023-12-25 17:05:35,384 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 589.1428571428571) internal successors, (4124), 7 states have internal predecessors, (4124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 17:05:35,384 INFO  L276                IsEmpty]: Start isEmpty. Operand 6957 states and 11599 transitions.
[2023-12-25 17:05:35,485 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 4493
[2023-12-25 17:05:35,485 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 17:05:35,486 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:05:35,563 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0
[2023-12-25 17:05:35,700 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 17:05:35,701 INFO  L420      AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 17:05:35,701 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 17:05:35,702 INFO  L85        PathProgramCache]: Analyzing trace with hash -1724720065, now seen corresponding path program 1 times
[2023-12-25 17:05:35,702 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 17:05:35,702 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1467959761]
[2023-12-25 17:05:35,702 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 17:05:35,702 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 17:05:36,108 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 17:05:36,108 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [925908252]
[2023-12-25 17:05:36,109 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 17:05:36,109 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 17:05:36,110 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 17:05:36,111 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 17:05:36,112 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 17:05:42,255 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 17:05:42,419 INFO  L262         TraceCheckSpWp]: Trace formula consists of 25727 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-12-25 17:05:42,489 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 17:05:42,701 INFO  L134       CoverageAnalysis]: Checked inductivity of 390 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 366 trivial. 0 not checked.
[2023-12-25 17:05:42,701 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 17:05:42,701 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 17:05:42,702 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1467959761]
[2023-12-25 17:05:42,702 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 17:05:42,702 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [925908252]
[2023-12-25 17:05:42,702 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [925908252] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 17:05:42,702 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 17:05:42,702 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-12-25 17:05:42,702 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [548843884]
[2023-12-25 17:05:42,702 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 17:05:42,705 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-12-25 17:05:42,705 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 17:05:42,707 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-12-25 17:05:42,707 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-12-25 17:05:42,707 INFO  L87              Difference]: Start difference. First operand 6957 states and 11599 transitions. Second operand  has 7 states, 7 states have (on average 589.5714285714286) internal successors, (4127), 7 states have internal predecessors, (4127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 17:05:43,044 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 17:05:43,044 INFO  L93              Difference]: Finished difference Result 19322 states and 32217 transitions.
[2023-12-25 17:05:43,044 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-12-25 17:05:43,045 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 589.5714285714286) internal successors, (4127), 7 states have internal predecessors, (4127), 0 states have call successors, (0), 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 4492
[2023-12-25 17:05:43,048 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 17:05:43,059 INFO  L225             Difference]: With dead ends: 19322
[2023-12-25 17:05:43,060 INFO  L226             Difference]: Without dead ends: 13112
[2023-12-25 17:05:43,066 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 4501 GetRequests, 4489 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-12-25 17:05:43,067 INFO  L413           NwaCegarLoop]: 11517 mSDtfsCounter, 30061 mSDsluCounter, 45137 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30061 SdHoareTripleChecker+Valid, 56654 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-12-25 17:05:43,067 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [30061 Valid, 56654 Invalid, 48 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-12-25 17:05:43,076 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 13112 states.
[2023-12-25 17:05:43,137 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 13112 to 6959.
[2023-12-25 17:05:43,142 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 6959 states, 6958 states have (on average 1.6672894509916643) internal successors, (11601), 6958 states have internal predecessors, (11601), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 17:05:43,149 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 6959 states to 6959 states and 11601 transitions.
[2023-12-25 17:05:43,149 INFO  L78                 Accepts]: Start accepts. Automaton has 6959 states and 11601 transitions. Word has length 4492
[2023-12-25 17:05:43,151 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 17:05:43,151 INFO  L495      AbstractCegarLoop]: Abstraction has 6959 states and 11601 transitions.
[2023-12-25 17:05:43,152 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 589.5714285714286) internal successors, (4127), 7 states have internal predecessors, (4127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 17:05:43,152 INFO  L276                IsEmpty]: Start isEmpty. Operand 6959 states and 11601 transitions.
[2023-12-25 17:05:43,464 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 4494
[2023-12-25 17:05:43,465 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 17:05:43,466 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-12-25 17:05:43,542 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 17:05:43,688 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 17:05:43,688 INFO  L420      AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 17:05:43,689 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 17:05:43,689 INFO  L85        PathProgramCache]: Analyzing trace with hash 146135423, now seen corresponding path program 1 times
[2023-12-25 17:05:43,690 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 17:05:43,690 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1631043876]
[2023-12-25 17:05:43,690 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 17:05:43,690 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 17:05:44,143 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 17:05:44,143 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2088915869]
[2023-12-25 17:05:44,144 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 17:05:44,144 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 17:05:44,144 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 17:05:44,146 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 17:05:44,148 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 17:05:49,993 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 17:05:50,166 INFO  L262         TraceCheckSpWp]: Trace formula consists of 25730 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-12-25 17:05:50,219 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 17:05:50,399 INFO  L134       CoverageAnalysis]: Checked inductivity of 390 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked.
[2023-12-25 17:05:50,400 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 17:05:50,400 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 17:05:50,400 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1631043876]
[2023-12-25 17:05:50,400 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 17:05:50,400 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2088915869]
[2023-12-25 17:05:50,400 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [2088915869] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 17:05:50,400 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 17:05:50,400 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-12-25 17:05:50,400 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1427366081]
[2023-12-25 17:05:50,400 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 17:05:50,403 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-12-25 17:05:50,403 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 17:05:50,404 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-12-25 17:05:50,404 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-12-25 17:05:50,405 INFO  L87              Difference]: Start difference. First operand 6959 states and 11601 transitions. Second operand  has 7 states, 7 states have (on average 590.0) internal successors, (4130), 7 states have internal predecessors, (4130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 17:05:50,700 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 17:05:50,701 INFO  L93              Difference]: Finished difference Result 19328 states and 32223 transitions.
[2023-12-25 17:05:50,701 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-12-25 17:05:50,702 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 590.0) internal successors, (4130), 7 states have internal predecessors, (4130), 0 states have call successors, (0), 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 4493
[2023-12-25 17:05:50,704 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 17:05:50,715 INFO  L225             Difference]: With dead ends: 19328
[2023-12-25 17:05:50,716 INFO  L226             Difference]: Without dead ends: 13113
[2023-12-25 17:05:50,722 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 4502 GetRequests, 4490 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-12-25 17:05:50,723 INFO  L413           NwaCegarLoop]: 11512 mSDtfsCounter, 30060 mSDsluCounter, 45122 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30060 SdHoareTripleChecker+Valid, 56634 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-12-25 17:05:50,723 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [30060 Valid, 56634 Invalid, 48 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-12-25 17:05:50,731 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 13113 states.
[2023-12-25 17:05:50,903 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 13113 to 6961.
[2023-12-25 17:05:50,908 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 6961 states, 6960 states have (on average 1.6670977011494252) internal successors, (11603), 6960 states have internal predecessors, (11603), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 17:05:50,932 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 6961 states to 6961 states and 11603 transitions.
[2023-12-25 17:05:50,932 INFO  L78                 Accepts]: Start accepts. Automaton has 6961 states and 11603 transitions. Word has length 4493
[2023-12-25 17:05:50,934 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 17:05:50,934 INFO  L495      AbstractCegarLoop]: Abstraction has 6961 states and 11603 transitions.
[2023-12-25 17:05:50,934 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 590.0) internal successors, (4130), 7 states have internal predecessors, (4130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 17:05:50,934 INFO  L276                IsEmpty]: Start isEmpty. Operand 6961 states and 11603 transitions.
[2023-12-25 17:05:51,036 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 4495
[2023-12-25 17:05:51,036 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 17:05:51,037 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-12-25 17:05:51,109 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0
[2023-12-25 17:05:51,240 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 17:05:51,241 INFO  L420      AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 17:05:51,241 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 17:05:51,242 INFO  L85        PathProgramCache]: Analyzing trace with hash 1924739941, now seen corresponding path program 1 times
[2023-12-25 17:05:51,242 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 17:05:51,242 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1423923608]
[2023-12-25 17:05:51,242 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 17:05:51,242 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 17:05:51,614 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 17:05:51,614 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1547909114]
[2023-12-25 17:05:51,615 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 17:05:51,615 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 17:05:51,615 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 17:05:51,616 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 17:05:51,618 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 17:05:57,532 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 17:05:57,683 INFO  L262         TraceCheckSpWp]: Trace formula consists of 25733 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-12-25 17:05:57,730 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 17:05:57,886 INFO  L134       CoverageAnalysis]: Checked inductivity of 390 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 362 trivial. 0 not checked.
[2023-12-25 17:05:57,886 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 17:05:57,886 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 17:05:57,886 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1423923608]
[2023-12-25 17:05:57,886 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 17:05:57,886 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1547909114]
[2023-12-25 17:05:57,886 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1547909114] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 17:05:57,886 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 17:05:57,886 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-12-25 17:05:57,887 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [156491853]
[2023-12-25 17:05:57,887 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 17:05:57,890 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-12-25 17:05:57,890 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 17:05:57,892 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-12-25 17:05:57,892 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-12-25 17:05:57,892 INFO  L87              Difference]: Start difference. First operand 6961 states and 11603 transitions. Second operand  has 7 states, 7 states have (on average 590.4285714285714) internal successors, (4133), 7 states have internal predecessors, (4133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 17:05:58,182 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 17:05:58,182 INFO  L93              Difference]: Finished difference Result 19334 states and 32229 transitions.
[2023-12-25 17:05:58,183 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-12-25 17:05:58,184 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 590.4285714285714) internal successors, (4133), 7 states have internal predecessors, (4133), 0 states have call successors, (0), 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 4494
[2023-12-25 17:05:58,186 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 17:05:58,198 INFO  L225             Difference]: With dead ends: 19334
[2023-12-25 17:05:58,199 INFO  L226             Difference]: Without dead ends: 13114
[2023-12-25 17:05:58,205 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 4503 GetRequests, 4491 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-12-25 17:05:58,206 INFO  L413           NwaCegarLoop]: 11507 mSDtfsCounter, 30059 mSDsluCounter, 45107 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30059 SdHoareTripleChecker+Valid, 56614 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-12-25 17:05:58,206 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [30059 Valid, 56614 Invalid, 48 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-12-25 17:05:58,215 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 13114 states.
[2023-12-25 17:05:58,276 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 13114 to 6963.
[2023-12-25 17:05:58,282 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 6963 states, 6962 states have (on average 1.6669060614765872) internal successors, (11605), 6962 states have internal predecessors, (11605), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 17:05:58,288 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 6963 states to 6963 states and 11605 transitions.
[2023-12-25 17:05:58,288 INFO  L78                 Accepts]: Start accepts. Automaton has 6963 states and 11605 transitions. Word has length 4494
[2023-12-25 17:05:58,290 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 17:05:58,290 INFO  L495      AbstractCegarLoop]: Abstraction has 6963 states and 11605 transitions.
[2023-12-25 17:05:58,291 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 590.4285714285714) internal successors, (4133), 7 states have internal predecessors, (4133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 17:05:58,291 INFO  L276                IsEmpty]: Start isEmpty. Operand 6963 states and 11605 transitions.
[2023-12-25 17:05:58,471 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 4496
[2023-12-25 17:05:58,472 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 17:05:58,473 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-12-25 17:05:58,548 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0
[2023-12-25 17:05:58,696 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 17:05:58,696 INFO  L420      AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 17:05:58,697 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 17:05:58,697 INFO  L85        PathProgramCache]: Analyzing trace with hash 542911195, now seen corresponding path program 1 times
[2023-12-25 17:05:58,697 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 17:05:58,698 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1431014046]
[2023-12-25 17:05:58,698 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 17:05:58,698 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 17:05:59,017 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 17:05:59,018 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [262221043]
[2023-12-25 17:05:59,018 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 17:05:59,019 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 17:05:59,019 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 17:05:59,020 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 17:05:59,021 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 17:06:04,773 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 17:06:04,938 INFO  L262         TraceCheckSpWp]: Trace formula consists of 25737 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-12-25 17:06:04,992 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 17:06:05,171 INFO  L134       CoverageAnalysis]: Checked inductivity of 390 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 360 trivial. 0 not checked.
[2023-12-25 17:06:05,171 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 17:06:05,171 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 17:06:05,171 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1431014046]
[2023-12-25 17:06:05,171 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 17:06:05,171 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [262221043]
[2023-12-25 17:06:05,171 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [262221043] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 17:06:05,171 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 17:06:05,171 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-12-25 17:06:05,172 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [745540965]
[2023-12-25 17:06:05,172 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 17:06:05,174 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-12-25 17:06:05,174 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 17:06:05,175 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-12-25 17:06:05,175 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-12-25 17:06:05,176 INFO  L87              Difference]: Start difference. First operand 6963 states and 11605 transitions. Second operand  has 7 states, 7 states have (on average 590.8571428571429) internal successors, (4136), 7 states have internal predecessors, (4136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 17:06:05,602 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 17:06:05,603 INFO  L93              Difference]: Finished difference Result 19340 states and 32235 transitions.
[2023-12-25 17:06:05,603 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-12-25 17:06:05,604 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 590.8571428571429) internal successors, (4136), 7 states have internal predecessors, (4136), 0 states have call successors, (0), 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 4495
[2023-12-25 17:06:05,606 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 17:06:05,615 INFO  L225             Difference]: With dead ends: 19340
[2023-12-25 17:06:05,616 INFO  L226             Difference]: Without dead ends: 13115
[2023-12-25 17:06:05,620 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 4504 GetRequests, 4492 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-12-25 17:06:05,620 INFO  L413           NwaCegarLoop]: 11502 mSDtfsCounter, 30058 mSDsluCounter, 45092 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30058 SdHoareTripleChecker+Valid, 56594 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-12-25 17:06:05,620 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [30058 Valid, 56594 Invalid, 48 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-12-25 17:06:05,628 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 13115 states.
[2023-12-25 17:06:05,683 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 13115 to 6965.
[2023-12-25 17:06:05,689 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 6965 states, 6964 states have (on average 1.6667145318782308) internal successors, (11607), 6964 states have internal predecessors, (11607), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 17:06:05,695 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 6965 states to 6965 states and 11607 transitions.
[2023-12-25 17:06:05,696 INFO  L78                 Accepts]: Start accepts. Automaton has 6965 states and 11607 transitions. Word has length 4495
[2023-12-25 17:06:05,697 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 17:06:05,697 INFO  L495      AbstractCegarLoop]: Abstraction has 6965 states and 11607 transitions.
[2023-12-25 17:06:05,698 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 590.8571428571429) internal successors, (4136), 7 states have internal predecessors, (4136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 17:06:05,698 INFO  L276                IsEmpty]: Start isEmpty. Operand 6965 states and 11607 transitions.
[2023-12-25 17:06:05,799 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 4497
[2023-12-25 17:06:05,800 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 17:06:05,801 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-12-25 17:06:05,871 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0
[2023-12-25 17:06:06,024 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 17:06:06,025 INFO  L420      AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 17:06:06,025 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 17:06:06,025 INFO  L85        PathProgramCache]: Analyzing trace with hash -762082803, now seen corresponding path program 1 times
[2023-12-25 17:06:06,025 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 17:06:06,025 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [699946905]
[2023-12-25 17:06:06,026 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 17:06:06,026 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 17:06:06,362 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 17:06:06,363 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2012100812]
[2023-12-25 17:06:06,363 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 17:06:06,364 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 17:06:06,364 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 17:06:06,365 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 17:06:06,366 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 17:06:11,918 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 17:06:12,078 INFO  L262         TraceCheckSpWp]: Trace formula consists of 25740 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-12-25 17:06:12,130 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 17:06:12,310 INFO  L134       CoverageAnalysis]: Checked inductivity of 390 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 358 trivial. 0 not checked.
[2023-12-25 17:06:12,310 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 17:06:12,310 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 17:06:12,310 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [699946905]
[2023-12-25 17:06:12,310 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 17:06:12,310 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2012100812]
[2023-12-25 17:06:12,311 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [2012100812] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 17:06:12,311 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 17:06:12,311 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-12-25 17:06:12,311 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [917199827]
[2023-12-25 17:06:12,311 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 17:06:12,313 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-12-25 17:06:12,313 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 17:06:12,315 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-12-25 17:06:12,315 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-12-25 17:06:12,316 INFO  L87              Difference]: Start difference. First operand 6965 states and 11607 transitions. Second operand  has 7 states, 7 states have (on average 591.2857142857143) internal successors, (4139), 7 states have internal predecessors, (4139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 17:06:12,619 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 17:06:12,619 INFO  L93              Difference]: Finished difference Result 19346 states and 32241 transitions.
[2023-12-25 17:06:12,620 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-12-25 17:06:12,621 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 591.2857142857143) internal successors, (4139), 7 states have internal predecessors, (4139), 0 states have call successors, (0), 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 4496
[2023-12-25 17:06:12,623 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 17:06:12,634 INFO  L225             Difference]: With dead ends: 19346
[2023-12-25 17:06:12,634 INFO  L226             Difference]: Without dead ends: 13116
[2023-12-25 17:06:12,641 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 4505 GetRequests, 4493 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-12-25 17:06:12,641 INFO  L413           NwaCegarLoop]: 11497 mSDtfsCounter, 30057 mSDsluCounter, 45077 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30057 SdHoareTripleChecker+Valid, 56574 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-12-25 17:06:12,641 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [30057 Valid, 56574 Invalid, 48 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-12-25 17:06:12,650 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 13116 states.
[2023-12-25 17:06:12,707 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 13116 to 6967.
[2023-12-25 17:06:12,712 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 6967 states, 6966 states have (on average 1.6665231122595463) internal successors, (11609), 6966 states have internal predecessors, (11609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 17:06:12,718 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 6967 states to 6967 states and 11609 transitions.
[2023-12-25 17:06:12,719 INFO  L78                 Accepts]: Start accepts. Automaton has 6967 states and 11609 transitions. Word has length 4496
[2023-12-25 17:06:12,720 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 17:06:12,721 INFO  L495      AbstractCegarLoop]: Abstraction has 6967 states and 11609 transitions.
[2023-12-25 17:06:12,721 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 591.2857142857143) internal successors, (4139), 7 states have internal predecessors, (4139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 17:06:12,721 INFO  L276                IsEmpty]: Start isEmpty. Operand 6967 states and 11609 transitions.
[2023-12-25 17:06:12,822 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 4498
[2023-12-25 17:06:12,822 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 17:06:12,823 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:06:12,891 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 17:06:13,048 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 17:06:13,048 INFO  L420      AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 17:06:13,049 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 17:06:13,049 INFO  L85        PathProgramCache]: Analyzing trace with hash -534967115, now seen corresponding path program 1 times
[2023-12-25 17:06:13,049 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 17:06:13,049 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [900486293]
[2023-12-25 17:06:13,050 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 17:06:13,050 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 17:06:13,470 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 17:06:13,470 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1439973436]
[2023-12-25 17:06:13,471 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 17:06:13,471 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 17:06:13,471 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 17:06:13,472 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 17:06:13,474 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 17:06:19,246 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 17:06:19,408 INFO  L262         TraceCheckSpWp]: Trace formula consists of 25743 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-12-25 17:06:19,461 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 17:06:19,640 INFO  L134       CoverageAnalysis]: Checked inductivity of 390 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 356 trivial. 0 not checked.
[2023-12-25 17:06:19,640 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 17:06:19,640 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 17:06:19,640 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [900486293]
[2023-12-25 17:06:19,641 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 17:06:19,641 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1439973436]
[2023-12-25 17:06:19,641 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1439973436] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 17:06:19,641 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 17:06:19,641 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-12-25 17:06:19,641 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [69694054]
[2023-12-25 17:06:19,641 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 17:06:19,643 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-12-25 17:06:19,643 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 17:06:19,645 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-12-25 17:06:19,645 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-12-25 17:06:19,646 INFO  L87              Difference]: Start difference. First operand 6967 states and 11609 transitions. Second operand  has 7 states, 7 states have (on average 591.7142857142857) internal successors, (4142), 7 states have internal predecessors, (4142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 17:06:19,947 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 17:06:19,948 INFO  L93              Difference]: Finished difference Result 19352 states and 32247 transitions.
[2023-12-25 17:06:19,948 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-12-25 17:06:19,949 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 591.7142857142857) internal successors, (4142), 7 states have internal predecessors, (4142), 0 states have call successors, (0), 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 4497
[2023-12-25 17:06:19,951 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 17:06:19,963 INFO  L225             Difference]: With dead ends: 19352
[2023-12-25 17:06:19,963 INFO  L226             Difference]: Without dead ends: 13117
[2023-12-25 17:06:19,970 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 4506 GetRequests, 4494 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-12-25 17:06:19,970 INFO  L413           NwaCegarLoop]: 11492 mSDtfsCounter, 30056 mSDsluCounter, 45062 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30056 SdHoareTripleChecker+Valid, 56554 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-12-25 17:06:19,970 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [30056 Valid, 56554 Invalid, 48 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-12-25 17:06:19,979 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 13117 states.
[2023-12-25 17:06:20,043 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 13117 to 6969.
[2023-12-25 17:06:20,049 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 6969 states, 6968 states have (on average 1.6663318025258325) internal successors, (11611), 6968 states have internal predecessors, (11611), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 17:06:20,055 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 6969 states to 6969 states and 11611 transitions.
[2023-12-25 17:06:20,056 INFO  L78                 Accepts]: Start accepts. Automaton has 6969 states and 11611 transitions. Word has length 4497
[2023-12-25 17:06:20,057 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 17:06:20,057 INFO  L495      AbstractCegarLoop]: Abstraction has 6969 states and 11611 transitions.
[2023-12-25 17:06:20,058 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 591.7142857142857) internal successors, (4142), 7 states have internal predecessors, (4142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 17:06:20,058 INFO  L276                IsEmpty]: Start isEmpty. Operand 6969 states and 11611 transitions.
[2023-12-25 17:06:20,287 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 4499
[2023-12-25 17:06:20,287 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 17:06:20,288 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-12-25 17:06:20,374 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0
[2023-12-25 17:06:20,516 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 17:06:20,517 INFO  L420      AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 17:06:20,517 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 17:06:20,518 INFO  L85        PathProgramCache]: Analyzing trace with hash -590412493, now seen corresponding path program 1 times
[2023-12-25 17:06:20,518 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 17:06:20,518 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1188887660]
[2023-12-25 17:06:20,518 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 17:06:20,518 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 17:06:20,838 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 17:06:20,838 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1666847951]
[2023-12-25 17:06:20,839 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 17:06:20,839 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 17:06:20,839 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 17:06:20,840 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 17:06:20,847 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 17:06:26,635 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 17:06:26,801 INFO  L262         TraceCheckSpWp]: Trace formula consists of 25746 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-12-25 17:06:26,899 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 17:06:27,131 INFO  L134       CoverageAnalysis]: Checked inductivity of 390 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 354 trivial. 0 not checked.
[2023-12-25 17:06:27,132 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 17:06:27,132 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 17:06:27,132 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1188887660]
[2023-12-25 17:06:27,132 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 17:06:27,132 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1666847951]
[2023-12-25 17:06:27,132 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1666847951] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 17:06:27,132 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 17:06:27,132 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-12-25 17:06:27,132 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1060578677]
[2023-12-25 17:06:27,133 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 17:06:27,135 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-12-25 17:06:27,135 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 17:06:27,136 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-12-25 17:06:27,136 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-12-25 17:06:27,137 INFO  L87              Difference]: Start difference. First operand 6969 states and 11611 transitions. Second operand  has 7 states, 7 states have (on average 592.1428571428571) internal successors, (4145), 7 states have internal predecessors, (4145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 17:06:27,603 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 17:06:27,604 INFO  L93              Difference]: Finished difference Result 19358 states and 32253 transitions.
[2023-12-25 17:06:27,604 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-12-25 17:06:27,605 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 592.1428571428571) internal successors, (4145), 7 states have internal predecessors, (4145), 0 states have call successors, (0), 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 4498
[2023-12-25 17:06:27,608 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 17:06:27,616 INFO  L225             Difference]: With dead ends: 19358
[2023-12-25 17:06:27,616 INFO  L226             Difference]: Without dead ends: 13118
[2023-12-25 17:06:27,620 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 4507 GetRequests, 4495 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-12-25 17:06:27,620 INFO  L413           NwaCegarLoop]: 11487 mSDtfsCounter, 30055 mSDsluCounter, 45047 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30055 SdHoareTripleChecker+Valid, 56534 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-12-25 17:06:27,621 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [30055 Valid, 56534 Invalid, 48 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-12-25 17:06:27,628 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 13118 states.
[2023-12-25 17:06:27,679 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 13118 to 6971.
[2023-12-25 17:06:27,684 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 6971 states, 6970 states have (on average 1.6661406025824965) internal successors, (11613), 6970 states have internal predecessors, (11613), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 17:06:27,691 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 6971 states to 6971 states and 11613 transitions.
[2023-12-25 17:06:27,691 INFO  L78                 Accepts]: Start accepts. Automaton has 6971 states and 11613 transitions. Word has length 4498
[2023-12-25 17:06:27,693 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 17:06:27,693 INFO  L495      AbstractCegarLoop]: Abstraction has 6971 states and 11613 transitions.
[2023-12-25 17:06:27,693 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 592.1428571428571) internal successors, (4145), 7 states have internal predecessors, (4145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 17:06:27,693 INFO  L276                IsEmpty]: Start isEmpty. Operand 6971 states and 11613 transitions.
[2023-12-25 17:06:27,794 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 4500
[2023-12-25 17:06:27,794 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 17:06:27,808 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-12-25 17:06:27,898 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 17:06:28,022 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 17:06:28,023 INFO  L420      AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 17:06:28,023 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 17:06:28,024 INFO  L85        PathProgramCache]: Analyzing trace with hash -512678127, now seen corresponding path program 1 times
[2023-12-25 17:06:28,024 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 17:06:28,024 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [634800249]
[2023-12-25 17:06:28,024 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 17:06:28,024 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 17:06:28,360 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 17:06:28,360 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [261596256]
[2023-12-25 17:06:28,361 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 17:06:28,361 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 17:06:28,361 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 17:06:28,362 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 17:06:28,363 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 17:06:34,285 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 17:06:34,446 INFO  L262         TraceCheckSpWp]: Trace formula consists of 25750 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-12-25 17:06:34,497 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 17:06:34,693 INFO  L134       CoverageAnalysis]: Checked inductivity of 390 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 352 trivial. 0 not checked.
[2023-12-25 17:06:34,694 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 17:06:34,694 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 17:06:34,694 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [634800249]
[2023-12-25 17:06:34,694 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 17:06:34,694 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [261596256]
[2023-12-25 17:06:34,694 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [261596256] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 17:06:34,694 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 17:06:34,694 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-12-25 17:06:34,694 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1426696591]
[2023-12-25 17:06:34,695 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 17:06:34,697 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-12-25 17:06:34,697 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 17:06:34,717 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-12-25 17:06:34,718 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-12-25 17:06:34,718 INFO  L87              Difference]: Start difference. First operand 6971 states and 11613 transitions. Second operand  has 7 states, 7 states have (on average 592.5714285714286) internal successors, (4148), 7 states have internal predecessors, (4148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 17:06:35,052 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 17:06:35,052 INFO  L93              Difference]: Finished difference Result 19364 states and 32259 transitions.
[2023-12-25 17:06:35,052 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-12-25 17:06:35,053 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 592.5714285714286) internal successors, (4148), 7 states have internal predecessors, (4148), 0 states have call successors, (0), 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 4499
[2023-12-25 17:06:35,056 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 17:06:35,067 INFO  L225             Difference]: With dead ends: 19364
[2023-12-25 17:06:35,068 INFO  L226             Difference]: Without dead ends: 13119
[2023-12-25 17:06:35,074 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 4508 GetRequests, 4496 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-12-25 17:06:35,079 INFO  L413           NwaCegarLoop]: 11482 mSDtfsCounter, 30054 mSDsluCounter, 45032 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30054 SdHoareTripleChecker+Valid, 56514 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-12-25 17:06:35,080 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [30054 Valid, 56514 Invalid, 48 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-12-25 17:06:35,091 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 13119 states.
[2023-12-25 17:06:35,150 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 13119 to 6973.
[2023-12-25 17:06:35,156 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 6973 states, 6972 states have (on average 1.6659495123350545) internal successors, (11615), 6972 states have internal predecessors, (11615), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 17:06:35,162 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 6973 states to 6973 states and 11615 transitions.
[2023-12-25 17:06:35,162 INFO  L78                 Accepts]: Start accepts. Automaton has 6973 states and 11615 transitions. Word has length 4499
[2023-12-25 17:06:35,164 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 17:06:35,164 INFO  L495      AbstractCegarLoop]: Abstraction has 6973 states and 11615 transitions.
[2023-12-25 17:06:35,165 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 592.5714285714286) internal successors, (4148), 7 states have internal predecessors, (4148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 17:06:35,165 INFO  L276                IsEmpty]: Start isEmpty. Operand 6973 states and 11615 transitions.
[2023-12-25 17:06:35,353 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 4501
[2023-12-25 17:06:35,354 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 17:06:35,355 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-12-25 17:06:35,426 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 17:06:35,580 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 17:06:35,580 INFO  L420      AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 17:06:35,581 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 17:06:35,581 INFO  L85        PathProgramCache]: Analyzing trace with hash -1704325925, now seen corresponding path program 1 times
[2023-12-25 17:06:35,581 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 17:06:35,581 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1490308190]
[2023-12-25 17:06:35,582 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 17:06:35,582 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 17:06:35,940 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 17:06:35,940 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [765980309]
[2023-12-25 17:06:35,941 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 17:06:35,941 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 17:06:35,941 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 17:06:35,942 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 17:06:35,945 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 17:06:41,788 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 17:06:41,961 INFO  L262         TraceCheckSpWp]: Trace formula consists of 25753 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-12-25 17:06:42,020 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 17:06:42,203 INFO  L134       CoverageAnalysis]: Checked inductivity of 390 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 350 trivial. 0 not checked.
[2023-12-25 17:06:42,203 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 17:06:42,203 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 17:06:42,203 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1490308190]
[2023-12-25 17:06:42,203 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 17:06:42,203 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [765980309]
[2023-12-25 17:06:42,203 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [765980309] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 17:06:42,203 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 17:06:42,204 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-12-25 17:06:42,204 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [257621256]
[2023-12-25 17:06:42,204 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 17:06:42,206 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-12-25 17:06:42,206 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 17:06:42,208 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-12-25 17:06:42,208 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-12-25 17:06:42,208 INFO  L87              Difference]: Start difference. First operand 6973 states and 11615 transitions. Second operand  has 7 states, 7 states have (on average 593.0) internal successors, (4151), 7 states have internal predecessors, (4151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 17:06:42,603 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 17:06:42,603 INFO  L93              Difference]: Finished difference Result 19370 states and 32265 transitions.
[2023-12-25 17:06:42,603 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-12-25 17:06:42,604 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 593.0) internal successors, (4151), 7 states have internal predecessors, (4151), 0 states have call successors, (0), 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 4500
[2023-12-25 17:06:42,607 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 17:06:42,619 INFO  L225             Difference]: With dead ends: 19370
[2023-12-25 17:06:42,619 INFO  L226             Difference]: Without dead ends: 13120
[2023-12-25 17:06:42,626 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 4509 GetRequests, 4497 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-12-25 17:06:42,626 INFO  L413           NwaCegarLoop]: 11477 mSDtfsCounter, 30053 mSDsluCounter, 45017 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30053 SdHoareTripleChecker+Valid, 56494 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-12-25 17:06:42,626 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [30053 Valid, 56494 Invalid, 48 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-12-25 17:06:42,636 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 13120 states.
[2023-12-25 17:06:42,699 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 13120 to 6975.
[2023-12-25 17:06:42,704 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 6975 states, 6974 states have (on average 1.665758531689131) internal successors, (11617), 6974 states have internal predecessors, (11617), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 17:06:42,711 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 6975 states to 6975 states and 11617 transitions.
[2023-12-25 17:06:42,712 INFO  L78                 Accepts]: Start accepts. Automaton has 6975 states and 11617 transitions. Word has length 4500
[2023-12-25 17:06:42,713 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 17:06:42,714 INFO  L495      AbstractCegarLoop]: Abstraction has 6975 states and 11617 transitions.
[2023-12-25 17:06:42,714 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 593.0) internal successors, (4151), 7 states have internal predecessors, (4151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 17:06:42,714 INFO  L276                IsEmpty]: Start isEmpty. Operand 6975 states and 11617 transitions.
[2023-12-25 17:06:42,816 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 4502
[2023-12-25 17:06:42,816 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 17:06:42,817 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-12-25 17:06:42,894 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 17:06:43,040 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 17:06:43,040 INFO  L420      AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 17:06:43,041 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 17:06:43,041 INFO  L85        PathProgramCache]: Analyzing trace with hash -845921045, now seen corresponding path program 1 times
[2023-12-25 17:06:43,041 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 17:06:43,041 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [59172829]
[2023-12-25 17:06:43,041 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 17:06:43,042 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 17:06:43,376 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 17:06:43,376 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [178191098]
[2023-12-25 17:06:43,377 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 17:06:43,377 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 17:06:43,377 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 17:06:43,378 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 17:06:43,402 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 17:06:49,249 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 17:06:49,414 INFO  L262         TraceCheckSpWp]: Trace formula consists of 25756 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-12-25 17:06:49,463 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 17:06:49,641 INFO  L134       CoverageAnalysis]: Checked inductivity of 390 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 348 trivial. 0 not checked.
[2023-12-25 17:06:49,641 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 17:06:49,641 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 17:06:49,641 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [59172829]
[2023-12-25 17:06:49,641 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 17:06:49,641 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [178191098]
[2023-12-25 17:06:49,641 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [178191098] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 17:06:49,642 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 17:06:49,642 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-12-25 17:06:49,642 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2056181429]
[2023-12-25 17:06:49,642 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 17:06:49,644 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-12-25 17:06:49,644 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 17:06:49,646 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-12-25 17:06:49,647 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-12-25 17:06:49,647 INFO  L87              Difference]: Start difference. First operand 6975 states and 11617 transitions. Second operand  has 7 states, 7 states have (on average 593.4285714285714) internal successors, (4154), 7 states have internal predecessors, (4154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 17:06:49,953 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 17:06:49,953 INFO  L93              Difference]: Finished difference Result 19376 states and 32271 transitions.
[2023-12-25 17:06:49,953 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-12-25 17:06:49,954 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 593.4285714285714) internal successors, (4154), 7 states have internal predecessors, (4154), 0 states have call successors, (0), 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 4501
[2023-12-25 17:06:49,957 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 17:06:49,967 INFO  L225             Difference]: With dead ends: 19376
[2023-12-25 17:06:49,968 INFO  L226             Difference]: Without dead ends: 13121
[2023-12-25 17:06:49,974 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 4510 GetRequests, 4498 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-12-25 17:06:49,975 INFO  L413           NwaCegarLoop]: 11472 mSDtfsCounter, 30052 mSDsluCounter, 45002 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30052 SdHoareTripleChecker+Valid, 56474 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-12-25 17:06:49,975 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [30052 Valid, 56474 Invalid, 48 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-12-25 17:06:49,983 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 13121 states.
[2023-12-25 17:06:50,041 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 13121 to 6977.
[2023-12-25 17:06:50,046 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 6977 states, 6976 states have (on average 1.6655676605504588) internal successors, (11619), 6976 states have internal predecessors, (11619), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 17:06:50,052 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 6977 states to 6977 states and 11619 transitions.
[2023-12-25 17:06:50,053 INFO  L78                 Accepts]: Start accepts. Automaton has 6977 states and 11619 transitions. Word has length 4501
[2023-12-25 17:06:50,054 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 17:06:50,054 INFO  L495      AbstractCegarLoop]: Abstraction has 6977 states and 11619 transitions.
[2023-12-25 17:06:50,055 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 593.4285714285714) internal successors, (4154), 7 states have internal predecessors, (4154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 17:06:50,055 INFO  L276                IsEmpty]: Start isEmpty. Operand 6977 states and 11619 transitions.
[2023-12-25 17:06:50,156 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 4503
[2023-12-25 17:06:50,156 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 17:06:50,157 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-12-25 17:06:50,232 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0
[2023-12-25 17:06:50,371 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 17:06:50,371 INFO  L420      AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 17:06:50,372 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 17:06:50,372 INFO  L85        PathProgramCache]: Analyzing trace with hash -89773055, now seen corresponding path program 1 times
[2023-12-25 17:06:50,372 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 17:06:50,372 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1804556636]
[2023-12-25 17:06:50,372 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 17:06:50,372 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 17:06:50,848 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 17:06:50,849 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1977117459]
[2023-12-25 17:06:50,850 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 17:06:50,850 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 17:06:50,850 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 17:06:50,851 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 17:06:50,853 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 17:06:56,665 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 17:06:56,826 INFO  L262         TraceCheckSpWp]: Trace formula consists of 25759 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-12-25 17:06:56,879 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 17:06:57,056 INFO  L134       CoverageAnalysis]: Checked inductivity of 390 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 346 trivial. 0 not checked.
[2023-12-25 17:06:57,056 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 17:06:57,056 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 17:06:57,056 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1804556636]
[2023-12-25 17:06:57,056 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 17:06:57,056 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1977117459]
[2023-12-25 17:06:57,056 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1977117459] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 17:06:57,057 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 17:06:57,057 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-12-25 17:06:57,057 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [85855685]
[2023-12-25 17:06:57,057 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 17:06:57,059 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-12-25 17:06:57,059 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 17:06:57,061 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-12-25 17:06:57,061 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-12-25 17:06:57,061 INFO  L87              Difference]: Start difference. First operand 6977 states and 11619 transitions. Second operand  has 7 states, 7 states have (on average 593.8571428571429) internal successors, (4157), 7 states have internal predecessors, (4157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 17:06:57,471 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 17:06:57,471 INFO  L93              Difference]: Finished difference Result 19382 states and 32277 transitions.
[2023-12-25 17:06:57,472 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-12-25 17:06:57,473 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 593.8571428571429) internal successors, (4157), 7 states have internal predecessors, (4157), 0 states have call successors, (0), 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 4502
[2023-12-25 17:06:57,475 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 17:06:57,483 INFO  L225             Difference]: With dead ends: 19382
[2023-12-25 17:06:57,484 INFO  L226             Difference]: Without dead ends: 13122
[2023-12-25 17:06:57,488 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 4511 GetRequests, 4499 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-12-25 17:06:57,493 INFO  L413           NwaCegarLoop]: 11467 mSDtfsCounter, 30051 mSDsluCounter, 44987 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30051 SdHoareTripleChecker+Valid, 56454 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-12-25 17:06:57,493 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [30051 Valid, 56454 Invalid, 48 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-12-25 17:06:57,501 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 13122 states.
[2023-12-25 17:06:57,548 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 13122 to 6979.
[2023-12-25 17:06:57,553 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 6979 states, 6978 states have (on average 1.6653768988248783) internal successors, (11621), 6978 states have internal predecessors, (11621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 17:06:57,559 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 6979 states to 6979 states and 11621 transitions.
[2023-12-25 17:06:57,559 INFO  L78                 Accepts]: Start accepts. Automaton has 6979 states and 11621 transitions. Word has length 4502
[2023-12-25 17:06:57,561 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 17:06:57,561 INFO  L495      AbstractCegarLoop]: Abstraction has 6979 states and 11621 transitions.
[2023-12-25 17:06:57,561 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 593.8571428571429) internal successors, (4157), 7 states have internal predecessors, (4157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 17:06:57,561 INFO  L276                IsEmpty]: Start isEmpty. Operand 6979 states and 11621 transitions.
[2023-12-25 17:06:57,662 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 4504
[2023-12-25 17:06:57,662 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 17:06:57,663 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-12-25 17:06:57,738 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 17:06:57,876 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 17:06:57,876 INFO  L420      AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 17:06:57,877 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 17:06:57,877 INFO  L85        PathProgramCache]: Analyzing trace with hash 1501505607, now seen corresponding path program 1 times
[2023-12-25 17:06:57,877 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 17:06:57,877 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [438598888]
[2023-12-25 17:06:57,878 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 17:06:57,878 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 17:06:58,205 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 17:06:58,205 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2926709]
[2023-12-25 17:06:58,206 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 17:06:58,206 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 17:06:58,206 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 17:06:58,207 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 17:06:58,231 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 17:07:04,192 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 17:07:04,359 INFO  L262         TraceCheckSpWp]: Trace formula consists of 25763 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-12-25 17:07:04,415 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 17:07:04,594 INFO  L134       CoverageAnalysis]: Checked inductivity of 390 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 344 trivial. 0 not checked.
[2023-12-25 17:07:04,595 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 17:07:04,595 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 17:07:04,595 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [438598888]
[2023-12-25 17:07:04,595 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 17:07:04,595 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2926709]
[2023-12-25 17:07:04,595 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [2926709] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 17:07:04,595 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 17:07:04,595 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-12-25 17:07:04,595 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [878224295]
[2023-12-25 17:07:04,595 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 17:07:04,598 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-12-25 17:07:04,598 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 17:07:04,600 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-12-25 17:07:04,600 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-12-25 17:07:04,601 INFO  L87              Difference]: Start difference. First operand 6979 states and 11621 transitions. Second operand  has 7 states, 7 states have (on average 594.2857142857143) internal successors, (4160), 7 states have internal predecessors, (4160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 17:07:04,911 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 17:07:04,911 INFO  L93              Difference]: Finished difference Result 19388 states and 32283 transitions.
[2023-12-25 17:07:04,911 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-12-25 17:07:04,912 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 594.2857142857143) internal successors, (4160), 7 states have internal predecessors, (4160), 0 states have call successors, (0), 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 4503
[2023-12-25 17:07:04,915 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 17:07:04,927 INFO  L225             Difference]: With dead ends: 19388
[2023-12-25 17:07:04,928 INFO  L226             Difference]: Without dead ends: 13123
[2023-12-25 17:07:04,935 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 4512 GetRequests, 4500 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-12-25 17:07:04,935 INFO  L413           NwaCegarLoop]: 11462 mSDtfsCounter, 30050 mSDsluCounter, 44972 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30050 SdHoareTripleChecker+Valid, 56434 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-12-25 17:07:04,935 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [30050 Valid, 56434 Invalid, 48 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-12-25 17:07:04,945 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 13123 states.
[2023-12-25 17:07:05,012 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 13123 to 6981.
[2023-12-25 17:07:05,018 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 6981 states, 6980 states have (on average 1.665186246418338) internal successors, (11623), 6980 states have internal predecessors, (11623), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 17:07:05,025 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 6981 states to 6981 states and 11623 transitions.
[2023-12-25 17:07:05,026 INFO  L78                 Accepts]: Start accepts. Automaton has 6981 states and 11623 transitions. Word has length 4503
[2023-12-25 17:07:05,027 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 17:07:05,028 INFO  L495      AbstractCegarLoop]: Abstraction has 6981 states and 11623 transitions.
[2023-12-25 17:07:05,028 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 594.2857142857143) internal successors, (4160), 7 states have internal predecessors, (4160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 17:07:05,028 INFO  L276                IsEmpty]: Start isEmpty. Operand 6981 states and 11623 transitions.
[2023-12-25 17:07:05,130 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 4505
[2023-12-25 17:07:05,131 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 17:07:05,131 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-12-25 17:07:05,205 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 17:07:05,356 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 17:07:05,356 INFO  L420      AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 17:07:05,357 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 17:07:05,357 INFO  L85        PathProgramCache]: Analyzing trace with hash -1157503831, now seen corresponding path program 1 times
[2023-12-25 17:07:05,357 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 17:07:05,357 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1556927526]
[2023-12-25 17:07:05,357 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 17:07:05,357 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 17:07:05,777 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 17:07:05,778 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2140035867]
[2023-12-25 17:07:05,779 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 17:07:05,779 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 17:07:05,779 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 17:07:05,780 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 17:07:05,781 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 17:07:11,618 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 17:07:11,783 INFO  L262         TraceCheckSpWp]: Trace formula consists of 25766 conjuncts, 21 conjunts are in the unsatisfiable core
[2023-12-25 17:07:11,838 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 17:07:12,023 INFO  L134       CoverageAnalysis]: Checked inductivity of 390 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 342 trivial. 0 not checked.
[2023-12-25 17:07:12,023 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 17:07:12,023 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 17:07:12,023 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1556927526]
[2023-12-25 17:07:12,024 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 17:07:12,024 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2140035867]
[2023-12-25 17:07:12,024 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [2140035867] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 17:07:12,024 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 17:07:12,024 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8
[2023-12-25 17:07:12,024 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [964524527]
[2023-12-25 17:07:12,024 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 17:07:12,026 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 8 states
[2023-12-25 17:07:12,026 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 17:07:12,028 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2023-12-25 17:07:12,028 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56
[2023-12-25 17:07:12,028 INFO  L87              Difference]: Start difference. First operand 6981 states and 11623 transitions. Second operand  has 8 states, 8 states have (on average 520.375) internal successors, (4163), 8 states have internal predecessors, (4163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 17:07:12,519 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 17:07:12,519 INFO  L93              Difference]: Finished difference Result 19394 states and 32289 transitions.
[2023-12-25 17:07:12,520 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-12-25 17:07:12,521 INFO  L78                 Accepts]: Start accepts. Automaton has  has 8 states, 8 states have (on average 520.375) internal successors, (4163), 8 states have internal predecessors, (4163), 0 states have call successors, (0), 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 4504
[2023-12-25 17:07:12,523 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 17:07:12,531 INFO  L225             Difference]: With dead ends: 19394
[2023-12-25 17:07:12,531 INFO  L226             Difference]: Without dead ends: 13124
[2023-12-25 17:07:12,534 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 4513 GetRequests, 4500 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=51, Invalid=159, Unknown=0, NotChecked=0, Total=210
[2023-12-25 17:07:12,536 INFO  L413           NwaCegarLoop]: 11457 mSDtfsCounter, 30049 mSDsluCounter, 56411 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30049 SdHoareTripleChecker+Valid, 67868 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-12-25 17:07:12,536 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [30049 Valid, 67868 Invalid, 59 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-12-25 17:07:12,544 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 13124 states.
[2023-12-25 17:07:12,598 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 13124 to 6983.
[2023-12-25 17:07:12,604 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 6983 states, 6982 states have (on average 1.664995703236895) internal successors, (11625), 6982 states have internal predecessors, (11625), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 17:07:12,611 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 6983 states to 6983 states and 11625 transitions.
[2023-12-25 17:07:12,612 INFO  L78                 Accepts]: Start accepts. Automaton has 6983 states and 11625 transitions. Word has length 4504
[2023-12-25 17:07:12,614 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 17:07:12,614 INFO  L495      AbstractCegarLoop]: Abstraction has 6983 states and 11625 transitions.
[2023-12-25 17:07:12,614 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 8 states, 8 states have (on average 520.375) internal successors, (4163), 8 states have internal predecessors, (4163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 17:07:12,615 INFO  L276                IsEmpty]: Start isEmpty. Operand 6983 states and 11625 transitions.
[2023-12-25 17:07:12,718 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 4506
[2023-12-25 17:07:12,718 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 17:07:12,719 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-12-25 17:07:12,795 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 17:07:12,932 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 17:07:12,932 INFO  L420      AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 17:07:12,933 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 17:07:12,933 INFO  L85        PathProgramCache]: Analyzing trace with hash -1489436127, now seen corresponding path program 1 times
[2023-12-25 17:07:12,933 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 17:07:12,933 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [537341843]
[2023-12-25 17:07:12,934 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 17:07:12,934 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 17:07:13,292 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 17:07:13,292 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [45842710]
[2023-12-25 17:07:13,293 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 17:07:13,293 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 17:07:13,293 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 17:07:13,294 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 17:07:13,296 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 17:07:19,049 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 17:07:19,204 INFO  L262         TraceCheckSpWp]: Trace formula consists of 25769 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-12-25 17:07:19,258 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 17:07:19,417 INFO  L134       CoverageAnalysis]: Checked inductivity of 390 backedges. 50 proven. 0 refuted. 0 times theorem prover too weak. 340 trivial. 0 not checked.
[2023-12-25 17:07:19,417 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 17:07:19,417 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 17:07:19,417 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [537341843]
[2023-12-25 17:07:19,417 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 17:07:19,417 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [45842710]
[2023-12-25 17:07:19,417 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [45842710] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 17:07:19,417 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 17:07:19,418 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-12-25 17:07:19,418 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1352671141]
[2023-12-25 17:07:19,418 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 17:07:19,420 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-12-25 17:07:19,420 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 17:07:19,422 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-12-25 17:07:19,422 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-12-25 17:07:19,422 INFO  L87              Difference]: Start difference. First operand 6983 states and 11625 transitions. Second operand  has 7 states, 7 states have (on average 595.1428571428571) internal successors, (4166), 7 states have internal predecessors, (4166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 17:07:19,721 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 17:07:19,722 INFO  L93              Difference]: Finished difference Result 19400 states and 32295 transitions.
[2023-12-25 17:07:19,722 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-12-25 17:07:19,723 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 595.1428571428571) internal successors, (4166), 7 states have internal predecessors, (4166), 0 states have call successors, (0), 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 4505
[2023-12-25 17:07:19,725 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 17:07:19,736 INFO  L225             Difference]: With dead ends: 19400
[2023-12-25 17:07:19,736 INFO  L226             Difference]: Without dead ends: 13125
[2023-12-25 17:07:19,742 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 4514 GetRequests, 4502 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-12-25 17:07:19,742 INFO  L413           NwaCegarLoop]: 11452 mSDtfsCounter, 30048 mSDsluCounter, 44942 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30048 SdHoareTripleChecker+Valid, 56394 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-12-25 17:07:19,742 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [30048 Valid, 56394 Invalid, 48 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-12-25 17:07:19,749 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 13125 states.
[2023-12-25 17:07:19,805 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 13125 to 6985.
[2023-12-25 17:07:19,810 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 6985 states, 6984 states have (on average 1.6648052691867126) internal successors, (11627), 6984 states have internal predecessors, (11627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 17:07:19,815 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 6985 states to 6985 states and 11627 transitions.
[2023-12-25 17:07:19,816 INFO  L78                 Accepts]: Start accepts. Automaton has 6985 states and 11627 transitions. Word has length 4505
[2023-12-25 17:07:19,817 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 17:07:19,817 INFO  L495      AbstractCegarLoop]: Abstraction has 6985 states and 11627 transitions.
[2023-12-25 17:07:19,818 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 595.1428571428571) internal successors, (4166), 7 states have internal predecessors, (4166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 17:07:19,818 INFO  L276                IsEmpty]: Start isEmpty. Operand 6985 states and 11627 transitions.
[2023-12-25 17:07:20,005 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 4507
[2023-12-25 17:07:20,006 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 17:07:20,007 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-12-25 17:07:20,075 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0
[2023-12-25 17:07:20,220 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 17:07:20,220 INFO  L420      AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 17:07:20,221 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 17:07:20,221 INFO  L85        PathProgramCache]: Analyzing trace with hash -1266014257, now seen corresponding path program 1 times
[2023-12-25 17:07:20,221 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 17:07:20,221 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [328718914]
[2023-12-25 17:07:20,222 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 17:07:20,222 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 17:07:20,560 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 17:07:20,561 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [683812868]
[2023-12-25 17:07:20,561 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 17:07:20,562 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 17:07:20,562 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 17:07:20,578 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 17:07:20,579 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 17:07:26,413 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 17:07:26,586 INFO  L262         TraceCheckSpWp]: Trace formula consists of 25772 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-12-25 17:07:26,644 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 17:07:26,824 INFO  L134       CoverageAnalysis]: Checked inductivity of 390 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 338 trivial. 0 not checked.
[2023-12-25 17:07:26,824 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 17:07:26,824 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 17:07:26,825 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [328718914]
[2023-12-25 17:07:26,825 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 17:07:26,825 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [683812868]
[2023-12-25 17:07:26,825 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [683812868] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 17:07:26,825 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 17:07:26,825 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-12-25 17:07:26,825 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1442927965]
[2023-12-25 17:07:26,825 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 17:07:26,827 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-12-25 17:07:26,827 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 17:07:26,829 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-12-25 17:07:26,829 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-12-25 17:07:26,830 INFO  L87              Difference]: Start difference. First operand 6985 states and 11627 transitions. Second operand  has 7 states, 7 states have (on average 595.5714285714286) internal successors, (4169), 7 states have internal predecessors, (4169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 17:07:27,134 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 17:07:27,136 INFO  L93              Difference]: Finished difference Result 19406 states and 32301 transitions.
[2023-12-25 17:07:27,136 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-12-25 17:07:27,140 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 595.5714285714286) internal successors, (4169), 7 states have internal predecessors, (4169), 0 states have call successors, (0), 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 4506
[2023-12-25 17:07:27,143 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 17:07:27,155 INFO  L225             Difference]: With dead ends: 19406
[2023-12-25 17:07:27,155 INFO  L226             Difference]: Without dead ends: 13126
[2023-12-25 17:07:27,162 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 4515 GetRequests, 4503 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-12-25 17:07:27,162 INFO  L413           NwaCegarLoop]: 11447 mSDtfsCounter, 30047 mSDsluCounter, 44927 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30047 SdHoareTripleChecker+Valid, 56374 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-12-25 17:07:27,163 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [30047 Valid, 56374 Invalid, 48 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-12-25 17:07:27,172 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 13126 states.
[2023-12-25 17:07:27,234 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 13126 to 6987.
[2023-12-25 17:07:27,239 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 6987 states, 6986 states have (on average 1.6646149441740623) internal successors, (11629), 6986 states have internal predecessors, (11629), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 17:07:27,246 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 6987 states to 6987 states and 11629 transitions.
[2023-12-25 17:07:27,246 INFO  L78                 Accepts]: Start accepts. Automaton has 6987 states and 11629 transitions. Word has length 4506
[2023-12-25 17:07:27,248 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 17:07:27,248 INFO  L495      AbstractCegarLoop]: Abstraction has 6987 states and 11629 transitions.
[2023-12-25 17:07:27,249 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 595.5714285714286) internal successors, (4169), 7 states have internal predecessors, (4169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 17:07:27,249 INFO  L276                IsEmpty]: Start isEmpty. Operand 6987 states and 11629 transitions.
[2023-12-25 17:07:27,351 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 4508
[2023-12-25 17:07:27,351 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 17:07:27,352 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-12-25 17:07:27,425 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 17:07:27,552 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 17:07:27,553 INFO  L420      AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 17:07:27,553 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 17:07:27,553 INFO  L85        PathProgramCache]: Analyzing trace with hash 2112073341, now seen corresponding path program 1 times
[2023-12-25 17:07:27,553 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 17:07:27,554 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1726123104]
[2023-12-25 17:07:27,554 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 17:07:27,554 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 17:07:27,992 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 17:07:27,992 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1423444644]
[2023-12-25 17:07:27,993 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 17:07:27,993 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 17:07:27,993 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 17:07:27,994 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 17:07:28,016 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 17:07:33,818 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 17:07:33,990 INFO  L262         TraceCheckSpWp]: Trace formula consists of 25776 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-12-25 17:07:34,049 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 17:07:34,231 INFO  L134       CoverageAnalysis]: Checked inductivity of 390 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 336 trivial. 0 not checked.
[2023-12-25 17:07:34,231 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 17:07:34,231 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 17:07:34,231 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1726123104]
[2023-12-25 17:07:34,231 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 17:07:34,231 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1423444644]
[2023-12-25 17:07:34,231 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1423444644] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 17:07:34,231 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 17:07:34,232 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-12-25 17:07:34,232 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1597635171]
[2023-12-25 17:07:34,232 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 17:07:34,235 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-12-25 17:07:34,235 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 17:07:34,238 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-12-25 17:07:34,238 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-12-25 17:07:34,239 INFO  L87              Difference]: Start difference. First operand 6987 states and 11629 transitions. Second operand  has 7 states, 7 states have (on average 596.0) internal successors, (4172), 7 states have internal predecessors, (4172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 17:07:34,547 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 17:07:34,547 INFO  L93              Difference]: Finished difference Result 19412 states and 32307 transitions.
[2023-12-25 17:07:34,547 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-12-25 17:07:34,548 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 596.0) internal successors, (4172), 7 states have internal predecessors, (4172), 0 states have call successors, (0), 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 4507
[2023-12-25 17:07:34,551 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 17:07:34,563 INFO  L225             Difference]: With dead ends: 19412
[2023-12-25 17:07:34,563 INFO  L226             Difference]: Without dead ends: 13127
[2023-12-25 17:07:34,570 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 4516 GetRequests, 4504 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-12-25 17:07:34,570 INFO  L413           NwaCegarLoop]: 11442 mSDtfsCounter, 30046 mSDsluCounter, 44912 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30046 SdHoareTripleChecker+Valid, 56354 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-12-25 17:07:34,571 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [30046 Valid, 56354 Invalid, 48 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-12-25 17:07:34,580 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 13127 states.
[2023-12-25 17:07:34,644 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 13127 to 6989.
[2023-12-25 17:07:34,649 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 6989 states, 6988 states have (on average 1.6644247281053235) internal successors, (11631), 6988 states have internal predecessors, (11631), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 17:07:34,656 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 6989 states to 6989 states and 11631 transitions.
[2023-12-25 17:07:34,656 INFO  L78                 Accepts]: Start accepts. Automaton has 6989 states and 11631 transitions. Word has length 4507
[2023-12-25 17:07:34,658 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 17:07:34,658 INFO  L495      AbstractCegarLoop]: Abstraction has 6989 states and 11631 transitions.
[2023-12-25 17:07:34,659 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 596.0) internal successors, (4172), 7 states have internal predecessors, (4172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 17:07:34,659 INFO  L276                IsEmpty]: Start isEmpty. Operand 6989 states and 11631 transitions.
[2023-12-25 17:07:34,762 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 4509
[2023-12-25 17:07:34,762 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 17:07:34,763 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-12-25 17:07:34,840 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Ended with exit code 0
[2023-12-25 17:07:34,963 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 17:07:34,964 INFO  L420      AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 17:07:34,964 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 17:07:34,964 INFO  L85        PathProgramCache]: Analyzing trace with hash -1666697, now seen corresponding path program 1 times
[2023-12-25 17:07:34,964 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 17:07:34,964 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [790776483]
[2023-12-25 17:07:34,965 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 17:07:34,965 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 17:07:35,378 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 17:07:35,378 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [463520593]
[2023-12-25 17:07:35,379 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 17:07:35,379 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 17:07:35,379 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 17:07:35,380 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 17:07:35,405 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 17:07:41,133 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 17:07:41,292 INFO  L262         TraceCheckSpWp]: Trace formula consists of 25779 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-12-25 17:07:41,344 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 17:07:41,496 INFO  L134       CoverageAnalysis]: Checked inductivity of 390 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 334 trivial. 0 not checked.
[2023-12-25 17:07:41,497 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 17:07:41,497 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 17:07:41,497 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [790776483]
[2023-12-25 17:07:41,497 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 17:07:41,497 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [463520593]
[2023-12-25 17:07:41,497 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [463520593] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 17:07:41,497 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 17:07:41,497 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-12-25 17:07:41,497 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1122780696]
[2023-12-25 17:07:41,497 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 17:07:41,500 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-12-25 17:07:41,500 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 17:07:41,502 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-12-25 17:07:41,502 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-12-25 17:07:41,502 INFO  L87              Difference]: Start difference. First operand 6989 states and 11631 transitions. Second operand  has 7 states, 7 states have (on average 596.4285714285714) internal successors, (4175), 7 states have internal predecessors, (4175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 17:07:41,800 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 17:07:41,800 INFO  L93              Difference]: Finished difference Result 19418 states and 32313 transitions.
[2023-12-25 17:07:41,800 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-12-25 17:07:41,801 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 596.4285714285714) internal successors, (4175), 7 states have internal predecessors, (4175), 0 states have call successors, (0), 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 4508
[2023-12-25 17:07:41,804 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 17:07:41,814 INFO  L225             Difference]: With dead ends: 19418
[2023-12-25 17:07:41,815 INFO  L226             Difference]: Without dead ends: 13128
[2023-12-25 17:07:41,821 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 4517 GetRequests, 4505 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-12-25 17:07:41,824 INFO  L413           NwaCegarLoop]: 11437 mSDtfsCounter, 30045 mSDsluCounter, 44897 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30045 SdHoareTripleChecker+Valid, 56334 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-12-25 17:07:41,824 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [30045 Valid, 56334 Invalid, 48 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-12-25 17:07:41,833 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 13128 states.
[2023-12-25 17:07:41,889 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 13128 to 6991.
[2023-12-25 17:07:41,893 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 6991 states, 6990 states have (on average 1.6642346208869814) internal successors, (11633), 6990 states have internal predecessors, (11633), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 17:07:41,899 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 6991 states to 6991 states and 11633 transitions.
[2023-12-25 17:07:41,900 INFO  L78                 Accepts]: Start accepts. Automaton has 6991 states and 11633 transitions. Word has length 4508
[2023-12-25 17:07:41,902 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 17:07:41,905 INFO  L495      AbstractCegarLoop]: Abstraction has 6991 states and 11633 transitions.
[2023-12-25 17:07:41,907 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 596.4285714285714) internal successors, (4175), 7 states have internal predecessors, (4175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 17:07:41,908 INFO  L276                IsEmpty]: Start isEmpty. Operand 6991 states and 11633 transitions.
[2023-12-25 17:07:42,010 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 4510
[2023-12-25 17:07:42,010 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 17:07:42,011 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-12-25 17:07:42,084 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 17:07:42,214 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 17:07:42,215 INFO  L420      AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 17:07:42,215 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 17:07:42,216 INFO  L85        PathProgramCache]: Analyzing trace with hash -1133984681, now seen corresponding path program 1 times
[2023-12-25 17:07:42,216 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 17:07:42,216 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [466832519]
[2023-12-25 17:07:42,216 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 17:07:42,216 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 17:07:42,686 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 17:07:42,686 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [571330638]
[2023-12-25 17:07:42,687 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 17:07:42,687 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 17:07:42,687 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 17:07:42,688 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 17:07:42,714 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 17:07:48,400 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 17:07:48,562 INFO  L262         TraceCheckSpWp]: Trace formula consists of 25782 conjuncts, 21 conjunts are in the unsatisfiable core
[2023-12-25 17:07:48,616 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 17:07:48,776 INFO  L134       CoverageAnalysis]: Checked inductivity of 390 backedges. 58 proven. 0 refuted. 0 times theorem prover too weak. 332 trivial. 0 not checked.
[2023-12-25 17:07:48,776 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 17:07:48,776 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 17:07:48,776 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [466832519]
[2023-12-25 17:07:48,776 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 17:07:48,776 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [571330638]
[2023-12-25 17:07:48,776 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [571330638] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 17:07:48,776 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 17:07:48,777 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8
[2023-12-25 17:07:48,777 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1490461710]
[2023-12-25 17:07:48,777 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 17:07:48,780 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 8 states
[2023-12-25 17:07:48,780 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 17:07:48,781 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2023-12-25 17:07:48,781 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56
[2023-12-25 17:07:48,782 INFO  L87              Difference]: Start difference. First operand 6991 states and 11633 transitions. Second operand  has 8 states, 8 states have (on average 522.25) internal successors, (4178), 8 states have internal predecessors, (4178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 17:07:49,107 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 17:07:49,107 INFO  L93              Difference]: Finished difference Result 19424 states and 32319 transitions.
[2023-12-25 17:07:49,108 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-12-25 17:07:49,109 INFO  L78                 Accepts]: Start accepts. Automaton has  has 8 states, 8 states have (on average 522.25) internal successors, (4178), 8 states have internal predecessors, (4178), 0 states have call successors, (0), 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 4509
[2023-12-25 17:07:49,111 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 17:07:49,122 INFO  L225             Difference]: With dead ends: 19424
[2023-12-25 17:07:49,123 INFO  L226             Difference]: Without dead ends: 13129
[2023-12-25 17:07:49,130 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 4518 GetRequests, 4505 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=51, Invalid=159, Unknown=0, NotChecked=0, Total=210
[2023-12-25 17:07:49,130 INFO  L413           NwaCegarLoop]: 11432 mSDtfsCounter, 30044 mSDsluCounter, 55074 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30044 SdHoareTripleChecker+Valid, 66506 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-12-25 17:07:49,130 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [30044 Valid, 66506 Invalid, 54 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-12-25 17:07:49,139 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 13129 states.
[2023-12-25 17:07:49,195 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 13129 to 6993.
[2023-12-25 17:07:49,200 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 6993 states, 6992 states have (on average 1.6640446224256293) internal successors, (11635), 6992 states have internal predecessors, (11635), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 17:07:49,207 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 6993 states to 6993 states and 11635 transitions.
[2023-12-25 17:07:49,207 INFO  L78                 Accepts]: Start accepts. Automaton has 6993 states and 11635 transitions. Word has length 4509
[2023-12-25 17:07:49,208 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 17:07:49,209 INFO  L495      AbstractCegarLoop]: Abstraction has 6993 states and 11635 transitions.
[2023-12-25 17:07:49,209 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 8 states, 8 states have (on average 522.25) internal successors, (4178), 8 states have internal predecessors, (4178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 17:07:49,209 INFO  L276                IsEmpty]: Start isEmpty. Operand 6993 states and 11635 transitions.
[2023-12-25 17:07:49,311 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 4511
[2023-12-25 17:07:49,312 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 17:07:49,312 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-12-25 17:07:49,388 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Ended with exit code 0
[2023-12-25 17:07:49,517 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 17:07:49,517 INFO  L420      AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 17:07:49,518 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 17:07:49,518 INFO  L85        PathProgramCache]: Analyzing trace with hash 1409710237, now seen corresponding path program 1 times
[2023-12-25 17:07:49,518 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 17:07:49,518 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1724252335]
[2023-12-25 17:07:49,519 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 17:07:49,519 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 17:07:49,956 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 17:07:49,957 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2130640720]
[2023-12-25 17:07:49,957 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 17:07:49,958 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 17:07:49,958 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 17:07:49,958 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 17:07:49,963 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 17:07:55,762 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 17:07:55,936 INFO  L262         TraceCheckSpWp]: Trace formula consists of 25785 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-12-25 17:07:55,998 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 17:07:56,179 INFO  L134       CoverageAnalysis]: Checked inductivity of 390 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 330 trivial. 0 not checked.
[2023-12-25 17:07:56,180 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 17:07:56,180 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 17:07:56,180 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1724252335]
[2023-12-25 17:07:56,180 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 17:07:56,180 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2130640720]
[2023-12-25 17:07:56,180 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [2130640720] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 17:07:56,180 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 17:07:56,180 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-12-25 17:07:56,180 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1679536604]
[2023-12-25 17:07:56,181 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 17:07:56,183 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-12-25 17:07:56,183 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 17:07:56,184 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-12-25 17:07:56,184 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-12-25 17:07:56,185 INFO  L87              Difference]: Start difference. First operand 6993 states and 11635 transitions. Second operand  has 7 states, 7 states have (on average 597.2857142857143) internal successors, (4181), 7 states have internal predecessors, (4181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 17:07:56,484 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 17:07:56,484 INFO  L93              Difference]: Finished difference Result 19430 states and 32325 transitions.
[2023-12-25 17:07:56,485 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-12-25 17:07:56,486 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 597.2857142857143) internal successors, (4181), 7 states have internal predecessors, (4181), 0 states have call successors, (0), 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 4510
[2023-12-25 17:07:56,488 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 17:07:56,501 INFO  L225             Difference]: With dead ends: 19430
[2023-12-25 17:07:56,501 INFO  L226             Difference]: Without dead ends: 13130
[2023-12-25 17:07:56,508 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 4519 GetRequests, 4507 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-12-25 17:07:56,508 INFO  L413           NwaCegarLoop]: 11427 mSDtfsCounter, 30043 mSDsluCounter, 44867 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30043 SdHoareTripleChecker+Valid, 56294 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-12-25 17:07:56,509 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [30043 Valid, 56294 Invalid, 48 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-12-25 17:07:56,518 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 13130 states.
[2023-12-25 17:07:56,580 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 13130 to 6995.
[2023-12-25 17:07:56,585 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 6995 states, 6994 states have (on average 1.663854732627967) internal successors, (11637), 6994 states have internal predecessors, (11637), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 17:07:56,592 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 6995 states to 6995 states and 11637 transitions.
[2023-12-25 17:07:56,592 INFO  L78                 Accepts]: Start accepts. Automaton has 6995 states and 11637 transitions. Word has length 4510
[2023-12-25 17:07:56,594 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 17:07:56,594 INFO  L495      AbstractCegarLoop]: Abstraction has 6995 states and 11637 transitions.
[2023-12-25 17:07:56,595 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 597.2857142857143) internal successors, (4181), 7 states have internal predecessors, (4181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 17:07:56,595 INFO  L276                IsEmpty]: Start isEmpty. Operand 6995 states and 11637 transitions.
[2023-12-25 17:07:56,697 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 4512
[2023-12-25 17:07:56,698 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 17:07:56,699 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-12-25 17:07:56,775 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Forceful destruction successful, exit code 0
[2023-12-25 17:07:56,899 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 17:07:56,900 INFO  L420      AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 17:07:56,900 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 17:07:56,900 INFO  L85        PathProgramCache]: Analyzing trace with hash 2101098931, now seen corresponding path program 1 times
[2023-12-25 17:07:56,900 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 17:07:56,900 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1738320951]
[2023-12-25 17:07:56,901 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 17:07:56,901 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 17:07:57,435 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 17:07:57,435 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2022961685]
[2023-12-25 17:07:57,436 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 17:07:57,436 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 17:07:57,436 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 17:07:57,437 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 17:07:57,440 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 17:08:03,437 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 17:08:03,592 INFO  L262         TraceCheckSpWp]: Trace formula consists of 25789 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-12-25 17:08:03,642 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 17:08:03,819 INFO  L134       CoverageAnalysis]: Checked inductivity of 390 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 328 trivial. 0 not checked.
[2023-12-25 17:08:03,819 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 17:08:03,819 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 17:08:03,819 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1738320951]
[2023-12-25 17:08:03,819 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 17:08:03,819 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2022961685]
[2023-12-25 17:08:03,819 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [2022961685] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 17:08:03,819 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 17:08:03,820 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-12-25 17:08:03,820 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1562214819]
[2023-12-25 17:08:03,820 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 17:08:03,822 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-12-25 17:08:03,822 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 17:08:03,824 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-12-25 17:08:03,824 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-12-25 17:08:03,824 INFO  L87              Difference]: Start difference. First operand 6995 states and 11637 transitions. Second operand  has 7 states, 7 states have (on average 597.7142857142857) internal successors, (4184), 7 states have internal predecessors, (4184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 17:08:04,215 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 17:08:04,215 INFO  L93              Difference]: Finished difference Result 19436 states and 32331 transitions.
[2023-12-25 17:08:04,215 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-12-25 17:08:04,216 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 597.7142857142857) internal successors, (4184), 7 states have internal predecessors, (4184), 0 states have call successors, (0), 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 4511
[2023-12-25 17:08:04,219 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 17:08:04,230 INFO  L225             Difference]: With dead ends: 19436
[2023-12-25 17:08:04,230 INFO  L226             Difference]: Without dead ends: 13131
[2023-12-25 17:08:04,236 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 4520 GetRequests, 4508 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-12-25 17:08:04,236 INFO  L413           NwaCegarLoop]: 11422 mSDtfsCounter, 30042 mSDsluCounter, 44852 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30042 SdHoareTripleChecker+Valid, 56274 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-12-25 17:08:04,236 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [30042 Valid, 56274 Invalid, 48 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-12-25 17:08:04,244 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 13131 states.
[2023-12-25 17:08:04,302 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 13131 to 6997.
[2023-12-25 17:08:04,307 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 6997 states, 6996 states have (on average 1.6636649514008004) internal successors, (11639), 6996 states have internal predecessors, (11639), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 17:08:04,314 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 6997 states to 6997 states and 11639 transitions.
[2023-12-25 17:08:04,314 INFO  L78                 Accepts]: Start accepts. Automaton has 6997 states and 11639 transitions. Word has length 4511
[2023-12-25 17:08:04,316 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 17:08:04,316 INFO  L495      AbstractCegarLoop]: Abstraction has 6997 states and 11639 transitions.
[2023-12-25 17:08:04,316 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 597.7142857142857) internal successors, (4184), 7 states have internal predecessors, (4184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 17:08:04,316 INFO  L276                IsEmpty]: Start isEmpty. Operand 6997 states and 11639 transitions.
[2023-12-25 17:08:04,418 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 4513
[2023-12-25 17:08:04,418 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 17:08:04,419 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-12-25 17:08:04,497 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 17:08:04,640 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 17:08:04,640 INFO  L420      AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 17:08:04,641 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 17:08:04,641 INFO  L85        PathProgramCache]: Analyzing trace with hash 367235909, now seen corresponding path program 1 times
[2023-12-25 17:08:04,641 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 17:08:04,641 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [728050118]
[2023-12-25 17:08:04,642 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 17:08:04,642 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 17:08:05,052 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 17:08:05,052 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1257419940]
[2023-12-25 17:08:05,053 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 17:08:05,053 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 17:08:05,053 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 17:08:05,054 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 17:08:05,057 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 17:08:10,936 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 17:08:11,107 INFO  L262         TraceCheckSpWp]: Trace formula consists of 25792 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-12-25 17:08:11,153 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 17:08:11,307 INFO  L134       CoverageAnalysis]: Checked inductivity of 390 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 326 trivial. 0 not checked.
[2023-12-25 17:08:11,308 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 17:08:11,308 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 17:08:11,308 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [728050118]
[2023-12-25 17:08:11,308 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 17:08:11,308 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1257419940]
[2023-12-25 17:08:11,308 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1257419940] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 17:08:11,308 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 17:08:11,308 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-12-25 17:08:11,308 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1307119622]
[2023-12-25 17:08:11,309 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 17:08:11,311 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-12-25 17:08:11,311 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 17:08:11,312 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-12-25 17:08:11,312 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-12-25 17:08:11,313 INFO  L87              Difference]: Start difference. First operand 6997 states and 11639 transitions. Second operand  has 7 states, 7 states have (on average 598.1428571428571) internal successors, (4187), 7 states have internal predecessors, (4187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 17:08:11,613 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 17:08:11,613 INFO  L93              Difference]: Finished difference Result 19442 states and 32337 transitions.
[2023-12-25 17:08:11,614 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-12-25 17:08:11,615 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 598.1428571428571) internal successors, (4187), 7 states have internal predecessors, (4187), 0 states have call successors, (0), 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 4512
[2023-12-25 17:08:11,617 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 17:08:11,629 INFO  L225             Difference]: With dead ends: 19442
[2023-12-25 17:08:11,629 INFO  L226             Difference]: Without dead ends: 13132
[2023-12-25 17:08:11,636 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 4521 GetRequests, 4509 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-12-25 17:08:11,636 INFO  L413           NwaCegarLoop]: 11417 mSDtfsCounter, 30041 mSDsluCounter, 44837 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30041 SdHoareTripleChecker+Valid, 56254 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-12-25 17:08:11,636 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [30041 Valid, 56254 Invalid, 48 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-12-25 17:08:11,646 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 13132 states.
[2023-12-25 17:08:11,711 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 13132 to 6999.
[2023-12-25 17:08:11,717 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 6999 states, 6998 states have (on average 1.6634752786510432) internal successors, (11641), 6998 states have internal predecessors, (11641), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 17:08:11,724 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 6999 states to 6999 states and 11641 transitions.
[2023-12-25 17:08:11,725 INFO  L78                 Accepts]: Start accepts. Automaton has 6999 states and 11641 transitions. Word has length 4512
[2023-12-25 17:08:11,726 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 17:08:11,727 INFO  L495      AbstractCegarLoop]: Abstraction has 6999 states and 11641 transitions.
[2023-12-25 17:08:11,727 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 598.1428571428571) internal successors, (4187), 7 states have internal predecessors, (4187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 17:08:11,727 INFO  L276                IsEmpty]: Start isEmpty. Operand 6999 states and 11641 transitions.
[2023-12-25 17:08:11,915 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 4514
[2023-12-25 17:08:11,915 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 17:08:11,916 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-12-25 17:08:11,991 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 17:08:12,132 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 17:08:12,132 INFO  L420      AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 17:08:12,133 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 17:08:12,133 INFO  L85        PathProgramCache]: Analyzing trace with hash 901843853, now seen corresponding path program 1 times
[2023-12-25 17:08:12,133 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 17:08:12,133 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [11041932]
[2023-12-25 17:08:12,134 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 17:08:12,134 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 17:08:12,451 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 17:08:12,452 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [594661375]
[2023-12-25 17:08:12,452 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 17:08:12,453 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 17:08:12,453 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 17:08:12,454 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 17:08:12,456 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 17:08:18,278 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 17:08:18,444 INFO  L262         TraceCheckSpWp]: Trace formula consists of 25795 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-12-25 17:08:18,499 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 17:08:18,649 INFO  L134       CoverageAnalysis]: Checked inductivity of 390 backedges. 66 proven. 0 refuted. 0 times theorem prover too weak. 324 trivial. 0 not checked.
[2023-12-25 17:08:18,649 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 17:08:18,649 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 17:08:18,649 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [11041932]
[2023-12-25 17:08:18,649 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 17:08:18,649 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [594661375]
[2023-12-25 17:08:18,649 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [594661375] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 17:08:18,649 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 17:08:18,650 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-12-25 17:08:18,650 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1730509006]
[2023-12-25 17:08:18,650 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 17:08:18,652 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-12-25 17:08:18,652 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 17:08:18,654 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-12-25 17:08:18,654 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-12-25 17:08:18,654 INFO  L87              Difference]: Start difference. First operand 6999 states and 11641 transitions. Second operand  has 7 states, 7 states have (on average 598.5714285714286) internal successors, (4190), 7 states have internal predecessors, (4190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 17:08:19,030 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 17:08:19,030 INFO  L93              Difference]: Finished difference Result 19448 states and 32343 transitions.
[2023-12-25 17:08:19,030 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-12-25 17:08:19,031 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 598.5714285714286) internal successors, (4190), 7 states have internal predecessors, (4190), 0 states have call successors, (0), 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 4513
[2023-12-25 17:08:19,034 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 17:08:19,044 INFO  L225             Difference]: With dead ends: 19448
[2023-12-25 17:08:19,044 INFO  L226             Difference]: Without dead ends: 13133
[2023-12-25 17:08:19,049 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 4522 GetRequests, 4510 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-12-25 17:08:19,050 INFO  L413           NwaCegarLoop]: 11412 mSDtfsCounter, 30040 mSDsluCounter, 44822 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30040 SdHoareTripleChecker+Valid, 56234 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-12-25 17:08:19,050 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [30040 Valid, 56234 Invalid, 48 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-12-25 17:08:19,060 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 13133 states.
[2023-12-25 17:08:19,114 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 13133 to 7001.
[2023-12-25 17:08:19,119 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7001 states, 7000 states have (on average 1.6632857142857143) internal successors, (11643), 7000 states have internal predecessors, (11643), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 17:08:19,125 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7001 states to 7001 states and 11643 transitions.
[2023-12-25 17:08:19,125 INFO  L78                 Accepts]: Start accepts. Automaton has 7001 states and 11643 transitions. Word has length 4513
[2023-12-25 17:08:19,127 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 17:08:19,127 INFO  L495      AbstractCegarLoop]: Abstraction has 7001 states and 11643 transitions.
[2023-12-25 17:08:19,128 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 598.5714285714286) internal successors, (4190), 7 states have internal predecessors, (4190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 17:08:19,128 INFO  L276                IsEmpty]: Start isEmpty. Operand 7001 states and 11643 transitions.
[2023-12-25 17:08:19,230 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 4515
[2023-12-25 17:08:19,230 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 17:08:19,231 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-12-25 17:08:19,302 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 17:08:19,452 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 17:08:19,452 INFO  L420      AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 17:08:19,453 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 17:08:19,453 INFO  L85        PathProgramCache]: Analyzing trace with hash 1676058219, now seen corresponding path program 1 times
[2023-12-25 17:08:19,453 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 17:08:19,453 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1199062588]
[2023-12-25 17:08:19,454 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 17:08:19,454 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 17:08:19,785 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 17:08:19,785 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2091440376]
[2023-12-25 17:08:19,786 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 17:08:19,786 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 17:08:19,786 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 17:08:19,787 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 17:08:19,788 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 17:08:25,631 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 17:08:25,796 INFO  L262         TraceCheckSpWp]: Trace formula consists of 25798 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-12-25 17:08:25,852 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 17:08:26,142 INFO  L134       CoverageAnalysis]: Checked inductivity of 390 backedges. 68 proven. 0 refuted. 0 times theorem prover too weak. 322 trivial. 0 not checked.
[2023-12-25 17:08:26,143 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 17:08:26,143 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 17:08:26,143 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1199062588]
[2023-12-25 17:08:26,143 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 17:08:26,143 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2091440376]
[2023-12-25 17:08:26,143 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [2091440376] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 17:08:26,143 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 17:08:26,144 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-12-25 17:08:26,144 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1546149011]
[2023-12-25 17:08:26,144 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 17:08:26,146 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-12-25 17:08:26,146 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 17:08:26,149 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-12-25 17:08:26,149 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-12-25 17:08:26,150 INFO  L87              Difference]: Start difference. First operand 7001 states and 11643 transitions. Second operand  has 7 states, 7 states have (on average 599.0) internal successors, (4193), 7 states have internal predecessors, (4193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 17:08:26,458 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 17:08:26,459 INFO  L93              Difference]: Finished difference Result 19454 states and 32349 transitions.
[2023-12-25 17:08:26,459 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-12-25 17:08:26,460 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 599.0) internal successors, (4193), 7 states have internal predecessors, (4193), 0 states have call successors, (0), 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 4514
[2023-12-25 17:08:26,463 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 17:08:26,474 INFO  L225             Difference]: With dead ends: 19454
[2023-12-25 17:08:26,474 INFO  L226             Difference]: Without dead ends: 13134
[2023-12-25 17:08:26,482 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 4523 GetRequests, 4511 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-12-25 17:08:26,487 INFO  L413           NwaCegarLoop]: 11407 mSDtfsCounter, 30039 mSDsluCounter, 44807 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30039 SdHoareTripleChecker+Valid, 56214 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-12-25 17:08:26,487 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [30039 Valid, 56214 Invalid, 48 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-12-25 17:08:26,496 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 13134 states.
[2023-12-25 17:08:26,555 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 13134 to 7003.
[2023-12-25 17:08:26,560 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7003 states, 7002 states have (on average 1.6630962582119395) internal successors, (11645), 7002 states have internal predecessors, (11645), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 17:08:26,567 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7003 states to 7003 states and 11645 transitions.
[2023-12-25 17:08:26,567 INFO  L78                 Accepts]: Start accepts. Automaton has 7003 states and 11645 transitions. Word has length 4514
[2023-12-25 17:08:26,569 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 17:08:26,570 INFO  L495      AbstractCegarLoop]: Abstraction has 7003 states and 11645 transitions.
[2023-12-25 17:08:26,571 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 599.0) internal successors, (4193), 7 states have internal predecessors, (4193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 17:08:26,571 INFO  L276                IsEmpty]: Start isEmpty. Operand 7003 states and 11645 transitions.
[2023-12-25 17:08:26,673 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 4516
[2023-12-25 17:08:26,673 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 17:08:26,674 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-12-25 17:08:26,749 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 17:08:26,888 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 17:08:26,888 INFO  L420      AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 17:08:26,889 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 17:08:26,889 INFO  L85        PathProgramCache]: Analyzing trace with hash 526797289, now seen corresponding path program 1 times
[2023-12-25 17:08:26,889 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 17:08:26,889 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [98058701]
[2023-12-25 17:08:26,890 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 17:08:26,890 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 17:08:27,283 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 17:08:27,284 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1573417122]
[2023-12-25 17:08:27,284 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 17:08:27,284 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 17:08:27,285 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 17:08:27,287 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 17:08:27,288 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 17:08:32,908 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 17:08:33,075 INFO  L262         TraceCheckSpWp]: Trace formula consists of 25802 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-12-25 17:08:33,340 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 17:08:33,520 INFO  L134       CoverageAnalysis]: Checked inductivity of 390 backedges. 70 proven. 0 refuted. 0 times theorem prover too weak. 320 trivial. 0 not checked.
[2023-12-25 17:08:33,520 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 17:08:33,521 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 17:08:33,521 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [98058701]
[2023-12-25 17:08:33,521 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 17:08:33,521 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1573417122]
[2023-12-25 17:08:33,521 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1573417122] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 17:08:33,521 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 17:08:33,521 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-12-25 17:08:33,521 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1389766685]
[2023-12-25 17:08:33,521 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 17:08:33,523 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-12-25 17:08:33,523 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 17:08:33,525 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-12-25 17:08:33,525 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-12-25 17:08:33,526 INFO  L87              Difference]: Start difference. First operand 7003 states and 11645 transitions. Second operand  has 7 states, 7 states have (on average 599.4285714285714) internal successors, (4196), 7 states have internal predecessors, (4196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 17:08:33,829 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 17:08:33,829 INFO  L93              Difference]: Finished difference Result 19460 states and 32355 transitions.
[2023-12-25 17:08:33,829 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-12-25 17:08:33,830 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 599.4285714285714) internal successors, (4196), 7 states have internal predecessors, (4196), 0 states have call successors, (0), 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 4515
[2023-12-25 17:08:33,833 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 17:08:33,844 INFO  L225             Difference]: With dead ends: 19460
[2023-12-25 17:08:33,844 INFO  L226             Difference]: Without dead ends: 13135
[2023-12-25 17:08:33,851 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 4524 GetRequests, 4512 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-12-25 17:08:33,852 INFO  L413           NwaCegarLoop]: 11402 mSDtfsCounter, 30038 mSDsluCounter, 44792 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30038 SdHoareTripleChecker+Valid, 56194 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-12-25 17:08:33,852 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [30038 Valid, 56194 Invalid, 48 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-12-25 17:08:33,862 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 13135 states.
[2023-12-25 17:08:33,924 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 13135 to 7005.
[2023-12-25 17:08:33,930 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7005 states, 7004 states have (on average 1.6629069103369503) internal successors, (11647), 7004 states have internal predecessors, (11647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 17:08:33,936 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7005 states to 7005 states and 11647 transitions.
[2023-12-25 17:08:33,937 INFO  L78                 Accepts]: Start accepts. Automaton has 7005 states and 11647 transitions. Word has length 4515
[2023-12-25 17:08:33,939 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 17:08:33,939 INFO  L495      AbstractCegarLoop]: Abstraction has 7005 states and 11647 transitions.
[2023-12-25 17:08:33,939 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 599.4285714285714) internal successors, (4196), 7 states have internal predecessors, (4196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 17:08:33,940 INFO  L276                IsEmpty]: Start isEmpty. Operand 7005 states and 11647 transitions.
[2023-12-25 17:08:34,041 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 4517
[2023-12-25 17:08:34,041 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 17:08:34,042 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-12-25 17:08:34,117 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 17:08:34,266 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 17:08:34,266 INFO  L420      AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 17:08:34,266 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 17:08:34,267 INFO  L85        PathProgramCache]: Analyzing trace with hash 1795451411, now seen corresponding path program 1 times
[2023-12-25 17:08:34,267 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 17:08:34,267 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1602016757]
[2023-12-25 17:08:34,267 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 17:08:34,267 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 17:08:34,673 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 17:08:34,673 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [306081312]
[2023-12-25 17:08:34,674 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 17:08:34,674 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 17:08:34,674 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 17:08:34,676 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 17:08:34,692 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 17:08:40,432 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 17:08:40,596 INFO  L262         TraceCheckSpWp]: Trace formula consists of 25805 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-12-25 17:08:40,878 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 17:08:41,057 INFO  L134       CoverageAnalysis]: Checked inductivity of 390 backedges. 72 proven. 0 refuted. 0 times theorem prover too weak. 318 trivial. 0 not checked.
[2023-12-25 17:08:41,058 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 17:08:41,058 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 17:08:41,058 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1602016757]
[2023-12-25 17:08:41,058 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 17:08:41,058 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [306081312]
[2023-12-25 17:08:41,058 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [306081312] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 17:08:41,058 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 17:08:41,058 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-12-25 17:08:41,058 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [929158840]
[2023-12-25 17:08:41,059 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 17:08:41,061 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-12-25 17:08:41,061 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 17:08:41,062 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-12-25 17:08:41,062 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-12-25 17:08:41,063 INFO  L87              Difference]: Start difference. First operand 7005 states and 11647 transitions. Second operand  has 7 states, 7 states have (on average 599.8571428571429) internal successors, (4199), 7 states have internal predecessors, (4199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 17:08:41,363 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 17:08:41,364 INFO  L93              Difference]: Finished difference Result 19466 states and 32361 transitions.
[2023-12-25 17:08:41,364 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-12-25 17:08:41,365 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 599.8571428571429) internal successors, (4199), 7 states have internal predecessors, (4199), 0 states have call successors, (0), 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 4516
[2023-12-25 17:08:41,367 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 17:08:41,379 INFO  L225             Difference]: With dead ends: 19466
[2023-12-25 17:08:41,379 INFO  L226             Difference]: Without dead ends: 13136
[2023-12-25 17:08:41,386 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 4525 GetRequests, 4513 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-12-25 17:08:41,388 INFO  L413           NwaCegarLoop]: 11397 mSDtfsCounter, 30037 mSDsluCounter, 44777 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30037 SdHoareTripleChecker+Valid, 56174 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-12-25 17:08:41,388 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [30037 Valid, 56174 Invalid, 48 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-12-25 17:08:41,398 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 13136 states.
[2023-12-25 17:08:41,458 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 13136 to 7007.
[2023-12-25 17:08:41,463 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7007 states, 7006 states have (on average 1.6627176705680844) internal successors, (11649), 7006 states have internal predecessors, (11649), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 17:08:41,470 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7007 states to 7007 states and 11649 transitions.
[2023-12-25 17:08:41,470 INFO  L78                 Accepts]: Start accepts. Automaton has 7007 states and 11649 transitions. Word has length 4516
[2023-12-25 17:08:41,472 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 17:08:41,472 INFO  L495      AbstractCegarLoop]: Abstraction has 7007 states and 11649 transitions.
[2023-12-25 17:08:41,473 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 599.8571428571429) internal successors, (4199), 7 states have internal predecessors, (4199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 17:08:41,473 INFO  L276                IsEmpty]: Start isEmpty. Operand 7007 states and 11649 transitions.
[2023-12-25 17:08:41,644 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 4518
[2023-12-25 17:08:41,644 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 17:08:41,645 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-12-25 17:08:41,713 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Forceful destruction successful, exit code 0
[2023-12-25 17:08:41,845 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 17:08:41,846 INFO  L420      AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 17:08:41,846 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 17:08:41,846 INFO  L85        PathProgramCache]: Analyzing trace with hash 1964988355, now seen corresponding path program 1 times
[2023-12-25 17:08:41,846 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 17:08:41,846 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2087862074]
[2023-12-25 17:08:41,847 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 17:08:41,847 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 17:08:42,189 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 17:08:42,189 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [813346458]
[2023-12-25 17:08:42,190 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 17:08:42,190 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 17:08:42,190 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 17:08:42,200 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 17:08:42,201 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 17:08:47,959 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 17:08:48,112 INFO  L262         TraceCheckSpWp]: Trace formula consists of 25808 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-12-25 17:08:48,165 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 17:08:48,341 INFO  L134       CoverageAnalysis]: Checked inductivity of 390 backedges. 74 proven. 0 refuted. 0 times theorem prover too weak. 316 trivial. 0 not checked.
[2023-12-25 17:08:48,341 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 17:08:48,341 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 17:08:48,341 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2087862074]
[2023-12-25 17:08:48,341 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 17:08:48,341 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [813346458]
[2023-12-25 17:08:48,341 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [813346458] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 17:08:48,341 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 17:08:48,341 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-12-25 17:08:48,342 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [201911304]
[2023-12-25 17:08:48,342 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 17:08:48,344 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-12-25 17:08:48,344 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 17:08:48,345 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-12-25 17:08:48,345 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-12-25 17:08:48,346 INFO  L87              Difference]: Start difference. First operand 7007 states and 11649 transitions. Second operand  has 7 states, 7 states have (on average 600.2857142857143) internal successors, (4202), 7 states have internal predecessors, (4202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 17:08:48,647 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 17:08:48,647 INFO  L93              Difference]: Finished difference Result 19472 states and 32367 transitions.
[2023-12-25 17:08:48,647 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-12-25 17:08:48,648 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 600.2857142857143) internal successors, (4202), 7 states have internal predecessors, (4202), 0 states have call successors, (0), 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 4517
[2023-12-25 17:08:48,651 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 17:08:48,663 INFO  L225             Difference]: With dead ends: 19472
[2023-12-25 17:08:48,663 INFO  L226             Difference]: Without dead ends: 13137
[2023-12-25 17:08:48,670 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 4526 GetRequests, 4514 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-12-25 17:08:48,670 INFO  L413           NwaCegarLoop]: 11392 mSDtfsCounter, 30036 mSDsluCounter, 44762 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30036 SdHoareTripleChecker+Valid, 56154 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-12-25 17:08:48,670 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [30036 Valid, 56154 Invalid, 48 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-12-25 17:08:48,680 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 13137 states.
[2023-12-25 17:08:48,742 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 13137 to 7009.
[2023-12-25 17:08:48,748 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7009 states, 7008 states have (on average 1.6625285388127853) internal successors, (11651), 7008 states have internal predecessors, (11651), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 17:08:48,754 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7009 states to 7009 states and 11651 transitions.
[2023-12-25 17:08:48,755 INFO  L78                 Accepts]: Start accepts. Automaton has 7009 states and 11651 transitions. Word has length 4517
[2023-12-25 17:08:48,756 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 17:08:48,757 INFO  L495      AbstractCegarLoop]: Abstraction has 7009 states and 11651 transitions.
[2023-12-25 17:08:48,758 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 600.2857142857143) internal successors, (4202), 7 states have internal predecessors, (4202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 17:08:48,758 INFO  L276                IsEmpty]: Start isEmpty. Operand 7009 states and 11651 transitions.
[2023-12-25 17:08:48,933 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 4519
[2023-12-25 17:08:48,933 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 17:08:48,934 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-12-25 17:08:49,010 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Ended with exit code 0
[2023-12-25 17:08:49,134 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 17:08:49,135 INFO  L420      AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 17:08:49,135 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 17:08:49,135 INFO  L85        PathProgramCache]: Analyzing trace with hash -1875502791, now seen corresponding path program 1 times
[2023-12-25 17:08:49,135 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 17:08:49,135 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [527657920]
[2023-12-25 17:08:49,136 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 17:08:49,136 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 17:08:49,468 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 17:08:49,468 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [679277585]
[2023-12-25 17:08:49,469 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 17:08:49,469 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 17:08:49,469 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 17:08:49,470 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 17:08:49,472 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 17:08:55,256 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 17:08:55,426 INFO  L262         TraceCheckSpWp]: Trace formula consists of 25811 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-12-25 17:08:55,627 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 17:08:55,821 INFO  L134       CoverageAnalysis]: Checked inductivity of 390 backedges. 76 proven. 0 refuted. 0 times theorem prover too weak. 314 trivial. 0 not checked.
[2023-12-25 17:08:55,822 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 17:08:55,822 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 17:08:55,822 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [527657920]
[2023-12-25 17:08:55,822 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 17:08:55,822 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [679277585]
[2023-12-25 17:08:55,822 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [679277585] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 17:08:55,822 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 17:08:55,822 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-12-25 17:08:55,822 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [901305750]
[2023-12-25 17:08:55,822 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 17:08:55,825 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-12-25 17:08:55,825 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 17:08:55,826 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-12-25 17:08:55,826 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-12-25 17:08:55,827 INFO  L87              Difference]: Start difference. First operand 7009 states and 11651 transitions. Second operand  has 7 states, 7 states have (on average 600.7142857142857) internal successors, (4205), 7 states have internal predecessors, (4205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 17:08:56,138 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 17:08:56,138 INFO  L93              Difference]: Finished difference Result 19478 states and 32373 transitions.
[2023-12-25 17:08:56,138 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-12-25 17:08:56,139 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 600.7142857142857) internal successors, (4205), 7 states have internal predecessors, (4205), 0 states have call successors, (0), 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 4518
[2023-12-25 17:08:56,142 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 17:08:56,154 INFO  L225             Difference]: With dead ends: 19478
[2023-12-25 17:08:56,155 INFO  L226             Difference]: Without dead ends: 13138
[2023-12-25 17:08:56,162 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 4527 GetRequests, 4515 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-12-25 17:08:56,163 INFO  L413           NwaCegarLoop]: 11387 mSDtfsCounter, 30035 mSDsluCounter, 44747 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30035 SdHoareTripleChecker+Valid, 56134 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-12-25 17:08:56,163 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [30035 Valid, 56134 Invalid, 48 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-12-25 17:08:56,173 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 13138 states.
[2023-12-25 17:08:56,236 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 13138 to 7011.
[2023-12-25 17:08:56,242 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7011 states, 7010 states have (on average 1.662339514978602) internal successors, (11653), 7010 states have internal predecessors, (11653), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 17:08:56,249 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7011 states to 7011 states and 11653 transitions.
[2023-12-25 17:08:56,250 INFO  L78                 Accepts]: Start accepts. Automaton has 7011 states and 11653 transitions. Word has length 4518
[2023-12-25 17:08:56,252 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 17:08:56,252 INFO  L495      AbstractCegarLoop]: Abstraction has 7011 states and 11653 transitions.
[2023-12-25 17:08:56,252 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 600.7142857142857) internal successors, (4205), 7 states have internal predecessors, (4205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 17:08:56,253 INFO  L276                IsEmpty]: Start isEmpty. Operand 7011 states and 11653 transitions.
[2023-12-25 17:08:56,356 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 4520
[2023-12-25 17:08:56,356 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 17:08:56,357 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-12-25 17:08:56,429 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 17:08:56,580 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 17:08:56,580 INFO  L420      AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 17:08:56,581 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 17:08:56,581 INFO  L85        PathProgramCache]: Analyzing trace with hash 629104415, now seen corresponding path program 1 times
[2023-12-25 17:08:56,581 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 17:08:56,581 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1107468202]
[2023-12-25 17:08:56,582 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 17:08:56,582 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 17:08:57,020 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 17:08:57,020 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [775450516]
[2023-12-25 17:08:57,021 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 17:08:57,021 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 17:08:57,021 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 17:08:57,022 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 17:08:57,044 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 17:09:02,910 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 17:09:03,084 INFO  L262         TraceCheckSpWp]: Trace formula consists of 25815 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-12-25 17:09:03,143 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 17:09:03,344 INFO  L134       CoverageAnalysis]: Checked inductivity of 390 backedges. 78 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked.
[2023-12-25 17:09:03,345 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 17:09:03,345 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 17:09:03,345 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1107468202]
[2023-12-25 17:09:03,345 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 17:09:03,345 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [775450516]
[2023-12-25 17:09:03,345 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [775450516] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 17:09:03,345 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 17:09:03,345 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-12-25 17:09:03,345 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [947439731]
[2023-12-25 17:09:03,345 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 17:09:03,347 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-12-25 17:09:03,348 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 17:09:03,349 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-12-25 17:09:03,349 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-12-25 17:09:03,350 INFO  L87              Difference]: Start difference. First operand 7011 states and 11653 transitions. Second operand  has 7 states, 7 states have (on average 601.1428571428571) internal successors, (4208), 7 states have internal predecessors, (4208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 17:09:03,757 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 17:09:03,757 INFO  L93              Difference]: Finished difference Result 19484 states and 32379 transitions.
[2023-12-25 17:09:03,757 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-12-25 17:09:03,758 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 601.1428571428571) internal successors, (4208), 7 states have internal predecessors, (4208), 0 states have call successors, (0), 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 4519
[2023-12-25 17:09:03,761 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 17:09:03,771 INFO  L225             Difference]: With dead ends: 19484
[2023-12-25 17:09:03,771 INFO  L226             Difference]: Without dead ends: 13139
[2023-12-25 17:09:03,777 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 4528 GetRequests, 4516 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-12-25 17:09:03,777 INFO  L413           NwaCegarLoop]: 11382 mSDtfsCounter, 30034 mSDsluCounter, 44732 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30034 SdHoareTripleChecker+Valid, 56114 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-12-25 17:09:03,777 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [30034 Valid, 56114 Invalid, 48 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-12-25 17:09:03,787 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 13139 states.
[2023-12-25 17:09:03,850 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 13139 to 7013.
[2023-12-25 17:09:03,856 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7013 states, 7012 states have (on average 1.6621505989731888) internal successors, (11655), 7012 states have internal predecessors, (11655), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 17:09:03,864 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7013 states to 7013 states and 11655 transitions.
[2023-12-25 17:09:03,864 INFO  L78                 Accepts]: Start accepts. Automaton has 7013 states and 11655 transitions. Word has length 4519
[2023-12-25 17:09:03,866 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 17:09:03,866 INFO  L495      AbstractCegarLoop]: Abstraction has 7013 states and 11655 transitions.
[2023-12-25 17:09:03,867 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 601.1428571428571) internal successors, (4208), 7 states have internal predecessors, (4208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 17:09:03,867 INFO  L276                IsEmpty]: Start isEmpty. Operand 7013 states and 11655 transitions.
[2023-12-25 17:09:03,969 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 4521
[2023-12-25 17:09:03,970 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 17:09:03,971 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-12-25 17:09:04,055 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Forceful destruction successful, exit code 0
[2023-12-25 17:09:04,189 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 17:09:04,190 INFO  L420      AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 17:09:04,190 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 17:09:04,190 INFO  L85        PathProgramCache]: Analyzing trace with hash 244618721, now seen corresponding path program 1 times
[2023-12-25 17:09:04,190 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 17:09:04,190 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [420352680]
[2023-12-25 17:09:04,191 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 17:09:04,191 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 17:09:04,527 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 17:09:04,527 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1425586122]
[2023-12-25 17:09:04,528 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 17:09:04,528 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 17:09:04,528 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 17:09:04,529 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 17:09:04,532 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 17:09:10,529 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 17:09:10,692 INFO  L262         TraceCheckSpWp]: Trace formula consists of 25818 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-12-25 17:09:10,745 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 17:09:10,925 INFO  L134       CoverageAnalysis]: Checked inductivity of 390 backedges. 80 proven. 0 refuted. 0 times theorem prover too weak. 310 trivial. 0 not checked.
[2023-12-25 17:09:10,925 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 17:09:10,925 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 17:09:10,925 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [420352680]
[2023-12-25 17:09:10,925 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 17:09:10,925 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1425586122]
[2023-12-25 17:09:10,925 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1425586122] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 17:09:10,925 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 17:09:10,925 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-12-25 17:09:10,926 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2081741681]
[2023-12-25 17:09:10,926 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 17:09:10,928 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-12-25 17:09:10,928 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 17:09:10,930 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-12-25 17:09:10,930 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-12-25 17:09:10,930 INFO  L87              Difference]: Start difference. First operand 7013 states and 11655 transitions. Second operand  has 7 states, 7 states have (on average 601.5714285714286) internal successors, (4211), 7 states have internal predecessors, (4211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 17:09:11,244 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 17:09:11,244 INFO  L93              Difference]: Finished difference Result 19490 states and 32385 transitions.
[2023-12-25 17:09:11,244 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-12-25 17:09:11,245 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 601.5714285714286) internal successors, (4211), 7 states have internal predecessors, (4211), 0 states have call successors, (0), 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 4520
[2023-12-25 17:09:11,248 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 17:09:11,260 INFO  L225             Difference]: With dead ends: 19490
[2023-12-25 17:09:11,260 INFO  L226             Difference]: Without dead ends: 13140
[2023-12-25 17:09:11,267 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 4529 GetRequests, 4517 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-12-25 17:09:11,268 INFO  L413           NwaCegarLoop]: 11377 mSDtfsCounter, 30033 mSDsluCounter, 44717 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30033 SdHoareTripleChecker+Valid, 56094 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-12-25 17:09:11,268 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [30033 Valid, 56094 Invalid, 48 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-12-25 17:09:11,278 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 13140 states.
[2023-12-25 17:09:11,341 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 13140 to 7015.
[2023-12-25 17:09:11,347 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7015 states, 7014 states have (on average 1.6619617907043056) internal successors, (11657), 7014 states have internal predecessors, (11657), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 17:09:11,355 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7015 states to 7015 states and 11657 transitions.
[2023-12-25 17:09:11,355 INFO  L78                 Accepts]: Start accepts. Automaton has 7015 states and 11657 transitions. Word has length 4520
[2023-12-25 17:09:11,357 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 17:09:11,357 INFO  L495      AbstractCegarLoop]: Abstraction has 7015 states and 11657 transitions.
[2023-12-25 17:09:11,358 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 601.5714285714286) internal successors, (4211), 7 states have internal predecessors, (4211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 17:09:11,358 INFO  L276                IsEmpty]: Start isEmpty. Operand 7015 states and 11657 transitions.
[2023-12-25 17:09:11,549 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 4522
[2023-12-25 17:09:11,550 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 17:09:11,550 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-12-25 17:09:11,631 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Ended with exit code 0
[2023-12-25 17:09:11,752 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 17:09:11,753 INFO  L420      AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 17:09:11,753 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 17:09:11,753 INFO  L85        PathProgramCache]: Analyzing trace with hash 1973496057, now seen corresponding path program 1 times
[2023-12-25 17:09:11,753 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 17:09:11,753 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1852537548]
[2023-12-25 17:09:11,754 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 17:09:11,754 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 17:09:12,091 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 17:09:12,091 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1009405867]
[2023-12-25 17:09:12,092 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 17:09:12,092 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 17:09:12,092 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 17:09:12,093 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 17:09:12,097 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 17:09:17,796 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 17:09:17,969 INFO  L262         TraceCheckSpWp]: Trace formula consists of 25821 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-12-25 17:09:18,024 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 17:09:18,173 INFO  L134       CoverageAnalysis]: Checked inductivity of 390 backedges. 82 proven. 0 refuted. 0 times theorem prover too weak. 308 trivial. 0 not checked.
[2023-12-25 17:09:18,173 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 17:09:18,173 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 17:09:18,173 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1852537548]
[2023-12-25 17:09:18,173 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 17:09:18,173 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1009405867]
[2023-12-25 17:09:18,173 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1009405867] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 17:09:18,173 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 17:09:18,174 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-12-25 17:09:18,174 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1416530003]
[2023-12-25 17:09:18,174 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 17:09:18,176 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-12-25 17:09:18,176 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 17:09:18,178 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-12-25 17:09:18,178 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-12-25 17:09:18,178 INFO  L87              Difference]: Start difference. First operand 7015 states and 11657 transitions. Second operand  has 7 states, 7 states have (on average 602.0) internal successors, (4214), 7 states have internal predecessors, (4214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 17:09:18,476 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 17:09:18,476 INFO  L93              Difference]: Finished difference Result 19496 states and 32391 transitions.
[2023-12-25 17:09:18,476 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-12-25 17:09:18,477 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 602.0) internal successors, (4214), 7 states have internal predecessors, (4214), 0 states have call successors, (0), 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 4521
[2023-12-25 17:09:18,480 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 17:09:18,492 INFO  L225             Difference]: With dead ends: 19496
[2023-12-25 17:09:18,492 INFO  L226             Difference]: Without dead ends: 13141
[2023-12-25 17:09:18,499 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 4530 GetRequests, 4518 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-12-25 17:09:18,500 INFO  L413           NwaCegarLoop]: 11372 mSDtfsCounter, 30032 mSDsluCounter, 44702 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30032 SdHoareTripleChecker+Valid, 56074 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-12-25 17:09:18,500 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [30032 Valid, 56074 Invalid, 48 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-12-25 17:09:18,509 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 13141 states.
[2023-12-25 17:09:18,712 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 13141 to 7017.
[2023-12-25 17:09:18,718 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7017 states, 7016 states have (on average 1.6617730900798175) internal successors, (11659), 7016 states have internal predecessors, (11659), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 17:09:18,725 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7017 states to 7017 states and 11659 transitions.
[2023-12-25 17:09:18,725 INFO  L78                 Accepts]: Start accepts. Automaton has 7017 states and 11659 transitions. Word has length 4521
[2023-12-25 17:09:18,727 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 17:09:18,728 INFO  L495      AbstractCegarLoop]: Abstraction has 7017 states and 11659 transitions.
[2023-12-25 17:09:18,728 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 602.0) internal successors, (4214), 7 states have internal predecessors, (4214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 17:09:18,728 INFO  L276                IsEmpty]: Start isEmpty. Operand 7017 states and 11659 transitions.
[2023-12-25 17:09:18,832 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 4523
[2023-12-25 17:09:18,832 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 17:09:18,833 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-12-25 17:09:18,908 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 17:09:19,060 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 17:09:19,060 INFO  L420      AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 17:09:19,061 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 17:09:19,061 INFO  L85        PathProgramCache]: Analyzing trace with hash -2042599161, now seen corresponding path program 1 times
[2023-12-25 17:09:19,061 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 17:09:19,061 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [260675413]
[2023-12-25 17:09:19,061 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 17:09:19,061 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 17:09:19,390 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 17:09:19,390 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1059615235]
[2023-12-25 17:09:19,391 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 17:09:19,391 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 17:09:19,391 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 17:09:19,392 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 17:09:19,394 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 17:09:25,282 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 17:09:25,444 INFO  L262         TraceCheckSpWp]: Trace formula consists of 25824 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-12-25 17:09:25,492 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 17:09:25,650 INFO  L134       CoverageAnalysis]: Checked inductivity of 390 backedges. 84 proven. 0 refuted. 0 times theorem prover too weak. 306 trivial. 0 not checked.
[2023-12-25 17:09:25,650 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 17:09:25,650 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 17:09:25,650 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [260675413]
[2023-12-25 17:09:25,650 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 17:09:25,650 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1059615235]
[2023-12-25 17:09:25,651 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1059615235] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 17:09:25,651 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 17:09:25,651 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-12-25 17:09:25,651 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [102614144]
[2023-12-25 17:09:25,651 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 17:09:25,653 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-12-25 17:09:25,653 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 17:09:25,655 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-12-25 17:09:25,655 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-12-25 17:09:25,655 INFO  L87              Difference]: Start difference. First operand 7017 states and 11659 transitions. Second operand  has 7 states, 7 states have (on average 602.4285714285714) internal successors, (4217), 7 states have internal predecessors, (4217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 17:09:25,969 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 17:09:25,970 INFO  L93              Difference]: Finished difference Result 19502 states and 32397 transitions.
[2023-12-25 17:09:25,970 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-12-25 17:09:25,972 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 602.4285714285714) internal successors, (4217), 7 states have internal predecessors, (4217), 0 states have call successors, (0), 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 4522
[2023-12-25 17:09:25,975 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 17:09:25,988 INFO  L225             Difference]: With dead ends: 19502
[2023-12-25 17:09:25,988 INFO  L226             Difference]: Without dead ends: 13142
[2023-12-25 17:09:25,997 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 4531 GetRequests, 4519 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-12-25 17:09:25,999 INFO  L413           NwaCegarLoop]: 11367 mSDtfsCounter, 30031 mSDsluCounter, 44687 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30031 SdHoareTripleChecker+Valid, 56054 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-12-25 17:09:25,999 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [30031 Valid, 56054 Invalid, 48 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-12-25 17:09:26,012 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 13142 states.
[2023-12-25 17:09:26,080 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 13142 to 7019.
[2023-12-25 17:09:26,087 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7019 states, 7018 states have (on average 1.6615844970076945) internal successors, (11661), 7018 states have internal predecessors, (11661), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 17:09:26,095 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7019 states to 7019 states and 11661 transitions.
[2023-12-25 17:09:26,096 INFO  L78                 Accepts]: Start accepts. Automaton has 7019 states and 11661 transitions. Word has length 4522
[2023-12-25 17:09:26,098 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 17:09:26,098 INFO  L495      AbstractCegarLoop]: Abstraction has 7019 states and 11661 transitions.
[2023-12-25 17:09:26,099 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 602.4285714285714) internal successors, (4217), 7 states have internal predecessors, (4217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 17:09:26,099 INFO  L276                IsEmpty]: Start isEmpty. Operand 7019 states and 11661 transitions.
[2023-12-25 17:09:26,206 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 4524
[2023-12-25 17:09:26,206 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 17:09:26,207 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-12-25 17:09:26,294 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Forceful destruction successful, exit code 0
[2023-12-25 17:09:26,416 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 17:09:26,417 INFO  L420      AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 17:09:26,417 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 17:09:26,417 INFO  L85        PathProgramCache]: Analyzing trace with hash -1444611755, now seen corresponding path program 1 times
[2023-12-25 17:09:26,417 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 17:09:26,417 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1177159333]
[2023-12-25 17:09:26,418 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 17:09:26,418 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 17:09:27,039 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 17:09:27,040 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1294260535]
[2023-12-25 17:09:27,041 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 17:09:27,041 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 17:09:27,041 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 17:09:27,042 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 17:09:27,044 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 17:09:33,139 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 17:09:33,313 INFO  L262         TraceCheckSpWp]: Trace formula consists of 25828 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-12-25 17:09:33,367 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 17:09:33,595 INFO  L134       CoverageAnalysis]: Checked inductivity of 390 backedges. 86 proven. 0 refuted. 0 times theorem prover too weak. 304 trivial. 0 not checked.
[2023-12-25 17:09:33,595 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 17:09:33,595 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 17:09:33,595 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1177159333]
[2023-12-25 17:09:33,595 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 17:09:33,595 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1294260535]
[2023-12-25 17:09:33,595 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1294260535] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 17:09:33,595 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 17:09:33,596 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-12-25 17:09:33,596 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1234812463]
[2023-12-25 17:09:33,596 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 17:09:33,598 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-12-25 17:09:33,598 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 17:09:33,601 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-12-25 17:09:33,602 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-12-25 17:09:33,602 INFO  L87              Difference]: Start difference. First operand 7019 states and 11661 transitions. Second operand  has 7 states, 7 states have (on average 602.8571428571429) internal successors, (4220), 7 states have internal predecessors, (4220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 17:09:33,906 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 17:09:33,906 INFO  L93              Difference]: Finished difference Result 19508 states and 32403 transitions.
[2023-12-25 17:09:33,906 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-12-25 17:09:33,907 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 602.8571428571429) internal successors, (4220), 7 states have internal predecessors, (4220), 0 states have call successors, (0), 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 4523
[2023-12-25 17:09:33,910 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 17:09:33,922 INFO  L225             Difference]: With dead ends: 19508
[2023-12-25 17:09:33,923 INFO  L226             Difference]: Without dead ends: 13143
[2023-12-25 17:09:33,930 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 4532 GetRequests, 4520 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-12-25 17:09:33,936 INFO  L413           NwaCegarLoop]: 11362 mSDtfsCounter, 30030 mSDsluCounter, 44672 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30030 SdHoareTripleChecker+Valid, 56034 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-12-25 17:09:33,936 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [30030 Valid, 56034 Invalid, 48 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-12-25 17:09:33,947 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 13143 states.
[2023-12-25 17:09:34,057 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 13143 to 7021.
[2023-12-25 17:09:34,062 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7021 states, 7020 states have (on average 1.6613960113960113) internal successors, (11663), 7020 states have internal predecessors, (11663), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 17:09:34,069 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7021 states to 7021 states and 11663 transitions.
[2023-12-25 17:09:34,069 INFO  L78                 Accepts]: Start accepts. Automaton has 7021 states and 11663 transitions. Word has length 4523
[2023-12-25 17:09:34,071 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 17:09:34,071 INFO  L495      AbstractCegarLoop]: Abstraction has 7021 states and 11663 transitions.
[2023-12-25 17:09:34,071 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 602.8571428571429) internal successors, (4220), 7 states have internal predecessors, (4220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 17:09:34,072 INFO  L276                IsEmpty]: Start isEmpty. Operand 7021 states and 11663 transitions.
[2023-12-25 17:09:34,174 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 4525
[2023-12-25 17:09:34,175 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 17:09:34,175 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-12-25 17:09:34,256 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Forceful destruction successful, exit code 0
[2023-12-25 17:09:34,404 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 17:09:34,404 INFO  L420      AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 17:09:34,405 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 17:09:34,405 INFO  L85        PathProgramCache]: Analyzing trace with hash -1860200785, now seen corresponding path program 1 times
[2023-12-25 17:09:34,405 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 17:09:34,405 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [183957788]
[2023-12-25 17:09:34,406 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 17:09:34,406 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 17:09:34,769 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 17:09:34,769 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1657978792]
[2023-12-25 17:09:34,770 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 17:09:34,770 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 17:09:34,770 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 17:09:34,771 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 17:09:34,774 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 17:09:40,676 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 17:09:40,845 INFO  L262         TraceCheckSpWp]: Trace formula consists of 25831 conjuncts, 21 conjunts are in the unsatisfiable core
[2023-12-25 17:09:40,900 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 17:09:41,195 INFO  L134       CoverageAnalysis]: Checked inductivity of 390 backedges. 90 proven. 0 refuted. 0 times theorem prover too weak. 300 trivial. 0 not checked.
[2023-12-25 17:09:41,195 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 17:09:41,196 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 17:09:41,196 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [183957788]
[2023-12-25 17:09:41,196 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 17:09:41,196 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1657978792]
[2023-12-25 17:09:41,196 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1657978792] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 17:09:41,196 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 17:09:41,196 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8
[2023-12-25 17:09:41,196 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [590831944]
[2023-12-25 17:09:41,196 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 17:09:41,198 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 8 states
[2023-12-25 17:09:41,199 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 17:09:41,200 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2023-12-25 17:09:41,200 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56
[2023-12-25 17:09:41,201 INFO  L87              Difference]: Start difference. First operand 7021 states and 11663 transitions. Second operand  has 8 states, 8 states have (on average 528.125) internal successors, (4225), 8 states have internal predecessors, (4225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 17:09:41,570 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 17:09:41,570 INFO  L93              Difference]: Finished difference Result 19519 states and 32416 transitions.
[2023-12-25 17:09:41,570 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. 
[2023-12-25 17:09:41,571 INFO  L78                 Accepts]: Start accepts. Automaton has  has 8 states, 8 states have (on average 528.125) internal successors, (4225), 8 states have internal predecessors, (4225), 0 states have call successors, (0), 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 4524
[2023-12-25 17:09:41,574 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 17:09:41,586 INFO  L225             Difference]: With dead ends: 19519
[2023-12-25 17:09:41,586 INFO  L226             Difference]: Without dead ends: 13149
[2023-12-25 17:09:41,593 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 4534 GetRequests, 4520 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240
[2023-12-25 17:09:41,594 INFO  L413           NwaCegarLoop]: 11351 mSDtfsCounter, 30031 mSDsluCounter, 55983 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30031 SdHoareTripleChecker+Valid, 67334 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-12-25 17:09:41,594 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [30031 Valid, 67334 Invalid, 74 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-12-25 17:09:41,603 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 13149 states.
[2023-12-25 17:09:41,666 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 13149 to 7026.
[2023-12-25 17:09:41,672 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7026 states, 7025 states have (on average 1.6612099644128113) internal successors, (11670), 7025 states have internal predecessors, (11670), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 17:09:41,678 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7026 states to 7026 states and 11670 transitions.
[2023-12-25 17:09:41,679 INFO  L78                 Accepts]: Start accepts. Automaton has 7026 states and 11670 transitions. Word has length 4524
[2023-12-25 17:09:41,680 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 17:09:41,681 INFO  L495      AbstractCegarLoop]: Abstraction has 7026 states and 11670 transitions.
[2023-12-25 17:09:41,681 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 8 states, 8 states have (on average 528.125) internal successors, (4225), 8 states have internal predecessors, (4225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 17:09:41,681 INFO  L276                IsEmpty]: Start isEmpty. Operand 7026 states and 11670 transitions.
[2023-12-25 17:09:41,828 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 4526
[2023-12-25 17:09:41,828 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 17:09:41,829 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-12-25 17:09:41,906 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 17:09:42,056 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 17:09:42,057 INFO  L420      AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 17:09:42,057 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 17:09:42,057 INFO  L85        PathProgramCache]: Analyzing trace with hash -660399287, now seen corresponding path program 1 times
[2023-12-25 17:09:42,057 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 17:09:42,057 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1181043617]
[2023-12-25 17:09:42,058 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 17:09:42,058 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 17:09:42,394 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 17:09:42,395 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2039142185]
[2023-12-25 17:09:42,395 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 17:09:42,395 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 17:09:42,396 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 17:09:42,398 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 17:09:42,420 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 17:09:48,366 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 17:09:48,556 INFO  L262         TraceCheckSpWp]: Trace formula consists of 25834 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-12-25 17:09:48,615 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 17:09:48,945 INFO  L134       CoverageAnalysis]: Checked inductivity of 390 backedges. 94 proven. 0 refuted. 0 times theorem prover too weak. 296 trivial. 0 not checked.
[2023-12-25 17:09:48,945 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 17:09:48,945 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 17:09:48,945 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1181043617]
[2023-12-25 17:09:48,945 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 17:09:48,945 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2039142185]
[2023-12-25 17:09:48,945 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [2039142185] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 17:09:48,945 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 17:09:48,946 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-12-25 17:09:48,946 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [572313875]
[2023-12-25 17:09:48,946 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 17:09:48,949 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-12-25 17:09:48,949 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 17:09:48,951 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-12-25 17:09:48,951 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-12-25 17:09:48,951 INFO  L87              Difference]: Start difference. First operand 7026 states and 11670 transitions. Second operand  has 7 states, 7 states have (on average 604.2857142857143) internal successors, (4230), 7 states have internal predecessors, (4230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 17:09:49,250 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 17:09:49,250 INFO  L93              Difference]: Finished difference Result 19532 states and 32435 transitions.
[2023-12-25 17:09:49,250 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-12-25 17:09:49,251 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 604.2857142857143) internal successors, (4230), 7 states have internal predecessors, (4230), 0 states have call successors, (0), 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 4525
[2023-12-25 17:09:49,254 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 17:09:49,265 INFO  L225             Difference]: With dead ends: 19532
[2023-12-25 17:09:49,266 INFO  L226             Difference]: Without dead ends: 13151
[2023-12-25 17:09:49,272 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 4534 GetRequests, 4522 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-12-25 17:09:49,273 INFO  L413           NwaCegarLoop]: 11342 mSDtfsCounter, 30036 mSDsluCounter, 44612 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30036 SdHoareTripleChecker+Valid, 55954 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-12-25 17:09:49,273 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [30036 Valid, 55954 Invalid, 48 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-12-25 17:09:49,281 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 13151 states.
[2023-12-25 17:09:49,340 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 13151 to 7031.
[2023-12-25 17:09:49,345 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7031 states, 7030 states have (on average 1.6610241820768137) internal successors, (11677), 7030 states have internal predecessors, (11677), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 17:09:49,352 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7031 states to 7031 states and 11677 transitions.
[2023-12-25 17:09:49,352 INFO  L78                 Accepts]: Start accepts. Automaton has 7031 states and 11677 transitions. Word has length 4525
[2023-12-25 17:09:49,354 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 17:09:49,354 INFO  L495      AbstractCegarLoop]: Abstraction has 7031 states and 11677 transitions.
[2023-12-25 17:09:49,355 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 604.2857142857143) internal successors, (4230), 7 states have internal predecessors, (4230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 17:09:49,355 INFO  L276                IsEmpty]: Start isEmpty. Operand 7031 states and 11677 transitions.
[2023-12-25 17:09:49,458 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 4527
[2023-12-25 17:09:49,458 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 17:09:49,459 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-12-25 17:09:49,541 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Ended with exit code 0
[2023-12-25 17:09:49,673 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 17:09:49,673 INFO  L420      AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 17:09:49,673 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 17:09:49,674 INFO  L85        PathProgramCache]: Analyzing trace with hash -613956677, now seen corresponding path program 1 times
[2023-12-25 17:09:49,674 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 17:09:49,674 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [429731864]
[2023-12-25 17:09:49,674 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 17:09:49,674 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 17:09:50,129 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 17:09:50,129 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1767606396]
[2023-12-25 17:09:50,130 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 17:09:50,130 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 17:09:50,130 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 17:09:50,131 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 17:09:50,133 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 17:09:56,131 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 17:09:56,298 INFO  L262         TraceCheckSpWp]: Trace formula consists of 25837 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-12-25 17:09:56,354 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 17:09:56,533 INFO  L134       CoverageAnalysis]: Checked inductivity of 390 backedges. 98 proven. 0 refuted. 0 times theorem prover too weak. 292 trivial. 0 not checked.
[2023-12-25 17:09:56,533 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 17:09:56,534 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 17:09:56,534 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [429731864]
[2023-12-25 17:09:56,534 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 17:09:56,534 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1767606396]
[2023-12-25 17:09:56,534 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1767606396] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 17:09:56,534 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 17:09:56,534 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-12-25 17:09:56,534 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2125390178]
[2023-12-25 17:09:56,534 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 17:09:56,536 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-12-25 17:09:56,537 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 17:09:56,538 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-12-25 17:09:56,538 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-12-25 17:09:56,539 INFO  L87              Difference]: Start difference. First operand 7031 states and 11677 transitions. Second operand  has 7 states, 7 states have (on average 605.0) internal successors, (4235), 7 states have internal predecessors, (4235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 17:09:56,927 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 17:09:56,927 INFO  L93              Difference]: Finished difference Result 19547 states and 32456 transitions.
[2023-12-25 17:09:56,927 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-12-25 17:09:56,928 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 605.0) internal successors, (4235), 7 states have internal predecessors, (4235), 0 states have call successors, (0), 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 4526
[2023-12-25 17:09:56,931 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 17:09:56,941 INFO  L225             Difference]: With dead ends: 19547
[2023-12-25 17:09:56,941 INFO  L226             Difference]: Without dead ends: 13155
[2023-12-25 17:09:56,946 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 4535 GetRequests, 4523 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-12-25 17:09:56,946 INFO  L413           NwaCegarLoop]: 11332 mSDtfsCounter, 30040 mSDsluCounter, 44582 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30040 SdHoareTripleChecker+Valid, 55914 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-12-25 17:09:56,946 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [30040 Valid, 55914 Invalid, 48 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-12-25 17:09:56,953 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 13155 states.
[2023-12-25 17:09:57,009 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 13155 to 7036.
[2023-12-25 17:09:57,015 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7036 states, 7035 states have (on average 1.6608386638237385) internal successors, (11684), 7035 states have internal predecessors, (11684), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 17:09:57,022 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7036 states to 7036 states and 11684 transitions.
[2023-12-25 17:09:57,022 INFO  L78                 Accepts]: Start accepts. Automaton has 7036 states and 11684 transitions. Word has length 4526
[2023-12-25 17:09:57,024 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 17:09:57,024 INFO  L495      AbstractCegarLoop]: Abstraction has 7036 states and 11684 transitions.
[2023-12-25 17:09:57,025 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 605.0) internal successors, (4235), 7 states have internal predecessors, (4235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 17:09:57,025 INFO  L276                IsEmpty]: Start isEmpty. Operand 7036 states and 11684 transitions.
[2023-12-25 17:09:57,129 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 4528
[2023-12-25 17:09:57,129 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 17:09:57,130 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-12-25 17:09:57,210 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Forceful destruction successful, exit code 0
[2023-12-25 17:09:57,348 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 17:09:57,349 INFO  L420      AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 17:09:57,349 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 17:09:57,349 INFO  L85        PathProgramCache]: Analyzing trace with hash -682307779, now seen corresponding path program 1 times
[2023-12-25 17:09:57,349 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 17:09:57,349 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1593869654]
[2023-12-25 17:09:57,350 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 17:09:57,350 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 17:09:57,698 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 17:09:57,698 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1932940984]
[2023-12-25 17:09:57,699 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 17:09:57,699 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 17:09:57,699 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 17:09:57,700 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 17:09:57,700 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 17:10:03,904 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 17:10:04,075 INFO  L262         TraceCheckSpWp]: Trace formula consists of 25840 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-12-25 17:10:04,128 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 17:10:04,310 INFO  L134       CoverageAnalysis]: Checked inductivity of 390 backedges. 102 proven. 0 refuted. 0 times theorem prover too weak. 288 trivial. 0 not checked.
[2023-12-25 17:10:04,310 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 17:10:04,311 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 17:10:04,311 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1593869654]
[2023-12-25 17:10:04,311 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 17:10:04,311 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1932940984]
[2023-12-25 17:10:04,311 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1932940984] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 17:10:04,311 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 17:10:04,311 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-12-25 17:10:04,311 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1469213260]
[2023-12-25 17:10:04,311 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 17:10:04,313 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-12-25 17:10:04,313 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 17:10:04,315 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-12-25 17:10:04,315 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-12-25 17:10:04,315 INFO  L87              Difference]: Start difference. First operand 7036 states and 11684 transitions. Second operand  has 7 states, 7 states have (on average 605.7142857142857) internal successors, (4240), 7 states have internal predecessors, (4240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 17:10:04,615 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 17:10:04,615 INFO  L93              Difference]: Finished difference Result 19562 states and 32477 transitions.
[2023-12-25 17:10:04,615 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-12-25 17:10:04,616 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 605.7142857142857) internal successors, (4240), 7 states have internal predecessors, (4240), 0 states have call successors, (0), 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 4527
[2023-12-25 17:10:04,619 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 17:10:04,631 INFO  L225             Difference]: With dead ends: 19562
[2023-12-25 17:10:04,631 INFO  L226             Difference]: Without dead ends: 13159
[2023-12-25 17:10:04,638 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 4536 GetRequests, 4524 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-12-25 17:10:04,652 INFO  L413           NwaCegarLoop]: 11322 mSDtfsCounter, 30044 mSDsluCounter, 44552 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30044 SdHoareTripleChecker+Valid, 55874 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-12-25 17:10:04,652 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [30044 Valid, 55874 Invalid, 48 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-12-25 17:10:04,662 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 13159 states.
[2023-12-25 17:10:04,818 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 13159 to 7041.
[2023-12-25 17:10:04,823 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7041 states, 7040 states have (on average 1.660653409090909) internal successors, (11691), 7040 states have internal predecessors, (11691), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 17:10:04,830 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7041 states to 7041 states and 11691 transitions.
[2023-12-25 17:10:04,830 INFO  L78                 Accepts]: Start accepts. Automaton has 7041 states and 11691 transitions. Word has length 4527
[2023-12-25 17:10:04,833 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 17:10:04,833 INFO  L495      AbstractCegarLoop]: Abstraction has 7041 states and 11691 transitions.
[2023-12-25 17:10:04,833 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 605.7142857142857) internal successors, (4240), 7 states have internal predecessors, (4240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 17:10:04,833 INFO  L276                IsEmpty]: Start isEmpty. Operand 7041 states and 11691 transitions.
[2023-12-25 17:10:04,937 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 4529
[2023-12-25 17:10:04,938 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 17:10:04,939 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-12-25 17:10:05,022 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 17:10:05,164 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 17:10:05,164 INFO  L420      AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 17:10:05,165 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 17:10:05,165 INFO  L85        PathProgramCache]: Analyzing trace with hash -416022841, now seen corresponding path program 1 times
[2023-12-25 17:10:05,165 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 17:10:05,165 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [609361155]
[2023-12-25 17:10:05,165 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 17:10:05,166 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 17:10:05,494 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 17:10:05,494 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1442820703]
[2023-12-25 17:10:05,495 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 17:10:05,495 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 17:10:05,495 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 17:10:05,498 INFO  L229       MonitoredProcess]: Starting monitored process 54 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-25 17:10:05,516 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Waiting until timeout for monitored process
[2023-12-25 17:10:11,404 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 17:10:11,579 INFO  L262         TraceCheckSpWp]: Trace formula consists of 25843 conjuncts, 21 conjunts are in the unsatisfiable core
[2023-12-25 17:10:11,766 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 17:10:11,959 INFO  L134       CoverageAnalysis]: Checked inductivity of 390 backedges. 106 proven. 0 refuted. 0 times theorem prover too weak. 284 trivial. 0 not checked.
[2023-12-25 17:10:11,959 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 17:10:11,960 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 17:10:11,960 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [609361155]
[2023-12-25 17:10:11,960 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 17:10:11,960 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1442820703]
[2023-12-25 17:10:11,960 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1442820703] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 17:10:11,960 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 17:10:11,960 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8
[2023-12-25 17:10:11,960 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [845373318]
[2023-12-25 17:10:11,960 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 17:10:11,963 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 8 states
[2023-12-25 17:10:11,963 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 17:10:11,964 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2023-12-25 17:10:11,964 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56
[2023-12-25 17:10:11,965 INFO  L87              Difference]: Start difference. First operand 7041 states and 11691 transitions. Second operand  has 8 states, 8 states have (on average 530.625) internal successors, (4245), 8 states have internal predecessors, (4245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 17:10:12,332 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 17:10:12,332 INFO  L93              Difference]: Finished difference Result 19579 states and 32500 transitions.
[2023-12-25 17:10:12,332 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. 
[2023-12-25 17:10:12,333 INFO  L78                 Accepts]: Start accepts. Automaton has  has 8 states, 8 states have (on average 530.625) internal successors, (4245), 8 states have internal predecessors, (4245), 0 states have call successors, (0), 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 4528
[2023-12-25 17:10:12,336 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 17:10:12,347 INFO  L225             Difference]: With dead ends: 19579
[2023-12-25 17:10:12,347 INFO  L226             Difference]: Without dead ends: 13165
[2023-12-25 17:10:12,354 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 4538 GetRequests, 4524 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240
[2023-12-25 17:10:12,354 INFO  L413           NwaCegarLoop]: 11311 mSDtfsCounter, 30047 mSDsluCounter, 55823 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30047 SdHoareTripleChecker+Valid, 67134 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-12-25 17:10:12,354 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [30047 Valid, 67134 Invalid, 74 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-12-25 17:10:12,363 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 13165 states.
[2023-12-25 17:10:12,420 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 13165 to 7046.
[2023-12-25 17:10:12,425 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7046 states, 7045 states have (on average 1.6604684173172464) internal successors, (11698), 7045 states have internal predecessors, (11698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 17:10:12,431 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7046 states to 7046 states and 11698 transitions.
[2023-12-25 17:10:12,432 INFO  L78                 Accepts]: Start accepts. Automaton has 7046 states and 11698 transitions. Word has length 4528
[2023-12-25 17:10:12,433 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 17:10:12,433 INFO  L495      AbstractCegarLoop]: Abstraction has 7046 states and 11698 transitions.
[2023-12-25 17:10:12,434 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 8 states, 8 states have (on average 530.625) internal successors, (4245), 8 states have internal predecessors, (4245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 17:10:12,434 INFO  L276                IsEmpty]: Start isEmpty. Operand 7046 states and 11698 transitions.
[2023-12-25 17:10:12,605 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 4530
[2023-12-25 17:10:12,605 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 17:10:12,606 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-12-25 17:10:12,690 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Ended with exit code 0
[2023-12-25 17:10:12,832 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 54 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable56
[2023-12-25 17:10:12,832 INFO  L420      AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 17:10:12,833 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 17:10:12,833 INFO  L85        PathProgramCache]: Analyzing trace with hash -1638214351, now seen corresponding path program 1 times
[2023-12-25 17:10:12,833 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 17:10:12,833 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [264982747]
[2023-12-25 17:10:12,834 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 17:10:12,834 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 17:10:13,179 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 17:10:13,179 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1037930482]
[2023-12-25 17:10:13,180 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 17:10:13,180 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 17:10:13,180 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 17:10:13,182 INFO  L229       MonitoredProcess]: Starting monitored process 55 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-25 17:10:13,184 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Waiting until timeout for monitored process
[2023-12-25 17:10:19,155 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 17:10:19,325 INFO  L262         TraceCheckSpWp]: Trace formula consists of 25846 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-12-25 17:10:19,377 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 17:10:19,557 INFO  L134       CoverageAnalysis]: Checked inductivity of 390 backedges. 110 proven. 0 refuted. 0 times theorem prover too weak. 280 trivial. 0 not checked.
[2023-12-25 17:10:19,558 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 17:10:19,558 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 17:10:19,558 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [264982747]
[2023-12-25 17:10:19,558 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 17:10:19,558 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1037930482]
[2023-12-25 17:10:19,558 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1037930482] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 17:10:19,558 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 17:10:19,558 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-12-25 17:10:19,558 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1302878694]
[2023-12-25 17:10:19,559 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 17:10:19,561 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-12-25 17:10:19,561 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 17:10:19,562 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-12-25 17:10:19,562 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-12-25 17:10:19,563 INFO  L87              Difference]: Start difference. First operand 7046 states and 11698 transitions. Second operand  has 7 states, 7 states have (on average 607.1428571428571) internal successors, (4250), 7 states have internal predecessors, (4250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 17:10:19,950 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 17:10:19,950 INFO  L93              Difference]: Finished difference Result 19592 states and 32519 transitions.
[2023-12-25 17:10:19,950 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-12-25 17:10:19,951 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 607.1428571428571) internal successors, (4250), 7 states have internal predecessors, (4250), 0 states have call successors, (0), 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 4529
[2023-12-25 17:10:19,954 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 17:10:19,963 INFO  L225             Difference]: With dead ends: 19592
[2023-12-25 17:10:19,963 INFO  L226             Difference]: Without dead ends: 13167
[2023-12-25 17:10:19,966 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 4538 GetRequests, 4526 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-12-25 17:10:19,966 INFO  L413           NwaCegarLoop]: 11302 mSDtfsCounter, 30052 mSDsluCounter, 44492 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30052 SdHoareTripleChecker+Valid, 55794 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-12-25 17:10:19,967 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [30052 Valid, 55794 Invalid, 48 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-12-25 17:10:19,973 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 13167 states.
[2023-12-25 17:10:20,033 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 13167 to 7051.
[2023-12-25 17:10:20,040 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7051 states, 7050 states have (on average 1.6602836879432623) internal successors, (11705), 7050 states have internal predecessors, (11705), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 17:10:20,048 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7051 states to 7051 states and 11705 transitions.
[2023-12-25 17:10:20,048 INFO  L78                 Accepts]: Start accepts. Automaton has 7051 states and 11705 transitions. Word has length 4529
[2023-12-25 17:10:20,050 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 17:10:20,050 INFO  L495      AbstractCegarLoop]: Abstraction has 7051 states and 11705 transitions.
[2023-12-25 17:10:20,051 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 607.1428571428571) internal successors, (4250), 7 states have internal predecessors, (4250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 17:10:20,051 INFO  L276                IsEmpty]: Start isEmpty. Operand 7051 states and 11705 transitions.
[2023-12-25 17:10:20,156 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 4531
[2023-12-25 17:10:20,156 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 17:10:20,157 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-12-25 17:10:20,243 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Forceful destruction successful, exit code 0
[2023-12-25 17:10:20,380 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57,55 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 17:10:20,381 INFO  L420      AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 17:10:20,381 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 17:10:20,381 INFO  L85        PathProgramCache]: Analyzing trace with hash 1224968147, now seen corresponding path program 1 times
[2023-12-25 17:10:20,381 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 17:10:20,381 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [753256269]
[2023-12-25 17:10:20,382 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 17:10:20,382 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 17:10:20,722 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 17:10:20,722 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1950957924]
[2023-12-25 17:10:20,723 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 17:10:20,723 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 17:10:20,723 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 17:10:20,724 INFO  L229       MonitoredProcess]: Starting monitored process 56 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-25 17:10:20,726 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Waiting until timeout for monitored process
[2023-12-25 17:10:26,645 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 17:10:26,814 INFO  L262         TraceCheckSpWp]: Trace formula consists of 25849 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-12-25 17:10:26,873 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 17:10:27,248 INFO  L134       CoverageAnalysis]: Checked inductivity of 390 backedges. 114 proven. 0 refuted. 0 times theorem prover too weak. 276 trivial. 0 not checked.
[2023-12-25 17:10:27,248 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 17:10:27,248 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 17:10:27,249 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [753256269]
[2023-12-25 17:10:27,249 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 17:10:27,249 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1950957924]
[2023-12-25 17:10:27,249 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1950957924] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 17:10:27,249 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 17:10:27,249 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-12-25 17:10:27,249 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [69415873]
[2023-12-25 17:10:27,249 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 17:10:27,251 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-12-25 17:10:27,251 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 17:10:27,253 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-12-25 17:10:27,253 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-12-25 17:10:27,253 INFO  L87              Difference]: Start difference. First operand 7051 states and 11705 transitions. Second operand  has 7 states, 7 states have (on average 607.8571428571429) internal successors, (4255), 7 states have internal predecessors, (4255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 17:10:27,548 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 17:10:27,549 INFO  L93              Difference]: Finished difference Result 19607 states and 32540 transitions.
[2023-12-25 17:10:27,549 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-12-25 17:10:27,550 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 607.8571428571429) internal successors, (4255), 7 states have internal predecessors, (4255), 0 states have call successors, (0), 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 4530
[2023-12-25 17:10:27,552 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 17:10:27,562 INFO  L225             Difference]: With dead ends: 19607
[2023-12-25 17:10:27,562 INFO  L226             Difference]: Without dead ends: 13171
[2023-12-25 17:10:27,568 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 4539 GetRequests, 4527 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-12-25 17:10:27,569 INFO  L413           NwaCegarLoop]: 11292 mSDtfsCounter, 30056 mSDsluCounter, 44462 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30056 SdHoareTripleChecker+Valid, 55754 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-12-25 17:10:27,569 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [30056 Valid, 55754 Invalid, 48 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-12-25 17:10:27,576 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 13171 states.
[2023-12-25 17:10:27,627 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 13171 to 7056.
[2023-12-25 17:10:27,632 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7056 states, 7055 states have (on average 1.660099220411056) internal successors, (11712), 7055 states have internal predecessors, (11712), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 17:10:27,637 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7056 states to 7056 states and 11712 transitions.
[2023-12-25 17:10:27,637 INFO  L78                 Accepts]: Start accepts. Automaton has 7056 states and 11712 transitions. Word has length 4530
[2023-12-25 17:10:27,639 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 17:10:27,639 INFO  L495      AbstractCegarLoop]: Abstraction has 7056 states and 11712 transitions.
[2023-12-25 17:10:27,640 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 607.8571428571429) internal successors, (4255), 7 states have internal predecessors, (4255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 17:10:27,640 INFO  L276                IsEmpty]: Start isEmpty. Operand 7056 states and 11712 transitions.
[2023-12-25 17:10:27,742 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 4532
[2023-12-25 17:10:27,742 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 17:10:27,743 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-12-25 17:10:27,813 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Forceful destruction successful, exit code 0
[2023-12-25 17:10:27,968 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58,56 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 17:10:27,968 INFO  L420      AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 17:10:27,969 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 17:10:27,969 INFO  L85        PathProgramCache]: Analyzing trace with hash -447353563, now seen corresponding path program 1 times
[2023-12-25 17:10:27,969 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 17:10:27,969 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1282842002]
[2023-12-25 17:10:27,970 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 17:10:27,970 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 17:10:28,363 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 17:10:28,363 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1213669086]
[2023-12-25 17:10:28,364 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 17:10:28,364 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 17:10:28,364 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 17:10:28,365 INFO  L229       MonitoredProcess]: Starting monitored process 57 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-25 17:10:28,389 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Waiting until timeout for monitored process
[2023-12-25 17:10:34,332 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 17:10:34,492 INFO  L262         TraceCheckSpWp]: Trace formula consists of 25852 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-12-25 17:10:34,541 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 17:10:34,719 INFO  L134       CoverageAnalysis]: Checked inductivity of 390 backedges. 118 proven. 0 refuted. 0 times theorem prover too weak. 272 trivial. 0 not checked.
[2023-12-25 17:10:34,719 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 17:10:34,719 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 17:10:34,720 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1282842002]
[2023-12-25 17:10:34,720 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 17:10:34,720 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1213669086]
[2023-12-25 17:10:34,720 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1213669086] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 17:10:34,720 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 17:10:34,720 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-12-25 17:10:34,720 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1401349686]
[2023-12-25 17:10:34,720 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 17:10:34,722 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-12-25 17:10:34,722 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 17:10:34,724 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-12-25 17:10:34,724 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-12-25 17:10:34,724 INFO  L87              Difference]: Start difference. First operand 7056 states and 11712 transitions. Second operand  has 7 states, 7 states have (on average 608.5714285714286) internal successors, (4260), 7 states have internal predecessors, (4260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 17:10:35,017 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 17:10:35,017 INFO  L93              Difference]: Finished difference Result 19622 states and 32561 transitions.
[2023-12-25 17:10:35,017 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-12-25 17:10:35,018 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 608.5714285714286) internal successors, (4260), 7 states have internal predecessors, (4260), 0 states have call successors, (0), 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 4531
[2023-12-25 17:10:35,021 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 17:10:35,032 INFO  L225             Difference]: With dead ends: 19622
[2023-12-25 17:10:35,032 INFO  L226             Difference]: Without dead ends: 13175
[2023-12-25 17:10:35,039 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 4540 GetRequests, 4528 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-12-25 17:10:35,039 INFO  L413           NwaCegarLoop]: 11282 mSDtfsCounter, 30060 mSDsluCounter, 44432 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30060 SdHoareTripleChecker+Valid, 55714 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-12-25 17:10:35,128 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [30060 Valid, 55714 Invalid, 48 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-12-25 17:10:35,135 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 13175 states.
[2023-12-25 17:10:35,185 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 13175 to 7061.
[2023-12-25 17:10:35,190 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7061 states, 7060 states have (on average 1.659915014164306) internal successors, (11719), 7060 states have internal predecessors, (11719), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 17:10:35,196 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7061 states to 7061 states and 11719 transitions.
[2023-12-25 17:10:35,196 INFO  L78                 Accepts]: Start accepts. Automaton has 7061 states and 11719 transitions. Word has length 4531
[2023-12-25 17:10:35,198 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 17:10:35,198 INFO  L495      AbstractCegarLoop]: Abstraction has 7061 states and 11719 transitions.
[2023-12-25 17:10:35,198 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 608.5714285714286) internal successors, (4260), 7 states have internal predecessors, (4260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 17:10:35,198 INFO  L276                IsEmpty]: Start isEmpty. Operand 7061 states and 11719 transitions.
[2023-12-25 17:10:35,301 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 4533
[2023-12-25 17:10:35,301 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 17:10:35,302 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-12-25 17:10:35,377 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Forceful destruction successful, exit code 0
[2023-12-25 17:10:35,528 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 57 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable59
[2023-12-25 17:10:35,528 INFO  L420      AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 17:10:35,529 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 17:10:35,529 INFO  L85        PathProgramCache]: Analyzing trace with hash 1679138527, now seen corresponding path program 1 times
[2023-12-25 17:10:35,529 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 17:10:35,529 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [214353032]
[2023-12-25 17:10:35,529 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 17:10:35,529 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 17:10:35,849 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 17:10:35,850 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1807341752]
[2023-12-25 17:10:35,850 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 17:10:35,851 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 17:10:35,851 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 17:10:35,851 INFO  L229       MonitoredProcess]: Starting monitored process 58 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-25 17:10:35,873 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Waiting until timeout for monitored process
[2023-12-25 17:10:41,800 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 17:10:41,967 INFO  L262         TraceCheckSpWp]: Trace formula consists of 25855 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-12-25 17:10:42,018 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 17:10:42,169 INFO  L134       CoverageAnalysis]: Checked inductivity of 390 backedges. 122 proven. 0 refuted. 0 times theorem prover too weak. 268 trivial. 0 not checked.
[2023-12-25 17:10:42,169 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 17:10:42,169 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 17:10:42,169 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [214353032]
[2023-12-25 17:10:42,169 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 17:10:42,169 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1807341752]
[2023-12-25 17:10:42,170 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1807341752] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 17:10:42,170 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 17:10:42,170 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-12-25 17:10:42,170 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [547150719]
[2023-12-25 17:10:42,170 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 17:10:42,172 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-12-25 17:10:42,172 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 17:10:42,174 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-12-25 17:10:42,174 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-12-25 17:10:42,174 INFO  L87              Difference]: Start difference. First operand 7061 states and 11719 transitions. Second operand  has 7 states, 7 states have (on average 609.2857142857143) internal successors, (4265), 7 states have internal predecessors, (4265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 17:10:42,548 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 17:10:42,548 INFO  L93              Difference]: Finished difference Result 19637 states and 32582 transitions.
[2023-12-25 17:10:42,549 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-12-25 17:10:42,550 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 609.2857142857143) internal successors, (4265), 7 states have internal predecessors, (4265), 0 states have call successors, (0), 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 4532
[2023-12-25 17:10:42,552 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 17:10:42,562 INFO  L225             Difference]: With dead ends: 19637
[2023-12-25 17:10:42,563 INFO  L226             Difference]: Without dead ends: 13179
[2023-12-25 17:10:42,569 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 4541 GetRequests, 4529 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-12-25 17:10:42,569 INFO  L413           NwaCegarLoop]: 11272 mSDtfsCounter, 30064 mSDsluCounter, 44402 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30064 SdHoareTripleChecker+Valid, 55674 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-12-25 17:10:42,578 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [30064 Valid, 55674 Invalid, 48 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-12-25 17:10:42,587 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 13179 states.
[2023-12-25 17:10:42,647 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 13179 to 7066.
[2023-12-25 17:10:42,652 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7066 states, 7065 states have (on average 1.659731068648266) internal successors, (11726), 7065 states have internal predecessors, (11726), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 17:10:42,659 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7066 states to 7066 states and 11726 transitions.
[2023-12-25 17:10:42,659 INFO  L78                 Accepts]: Start accepts. Automaton has 7066 states and 11726 transitions. Word has length 4532
[2023-12-25 17:10:42,661 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 17:10:42,661 INFO  L495      AbstractCegarLoop]: Abstraction has 7066 states and 11726 transitions.
[2023-12-25 17:10:42,661 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 609.2857142857143) internal successors, (4265), 7 states have internal predecessors, (4265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 17:10:42,661 INFO  L276                IsEmpty]: Start isEmpty. Operand 7066 states and 11726 transitions.
[2023-12-25 17:10:42,765 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 4534
[2023-12-25 17:10:42,765 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 17:10:42,766 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-12-25 17:10:42,840 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Ended with exit code 0
[2023-12-25 17:10:42,992 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60,58 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 17:10:42,992 INFO  L420      AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 17:10:42,993 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 17:10:42,993 INFO  L85        PathProgramCache]: Analyzing trace with hash -2027497703, now seen corresponding path program 1 times
[2023-12-25 17:10:42,993 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 17:10:42,993 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [618915560]
[2023-12-25 17:10:42,994 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 17:10:42,994 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 17:10:43,342 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 17:10:43,342 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2025376323]
[2023-12-25 17:10:43,343 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 17:10:43,343 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 17:10:43,343 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 17:10:43,344 INFO  L229       MonitoredProcess]: Starting monitored process 59 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-25 17:10:43,346 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Waiting until timeout for monitored process
[2023-12-25 17:10:49,384 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 17:10:49,549 INFO  L262         TraceCheckSpWp]: Trace formula consists of 25858 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-12-25 17:10:49,601 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 17:10:49,752 INFO  L134       CoverageAnalysis]: Checked inductivity of 390 backedges. 126 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked.
[2023-12-25 17:10:49,752 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 17:10:49,752 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 17:10:49,753 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [618915560]
[2023-12-25 17:10:49,753 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 17:10:49,753 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2025376323]
[2023-12-25 17:10:49,753 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [2025376323] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 17:10:49,753 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 17:10:49,753 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-12-25 17:10:49,753 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1081100955]
[2023-12-25 17:10:49,753 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 17:10:49,755 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-12-25 17:10:49,755 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 17:10:49,757 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-12-25 17:10:49,757 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-12-25 17:10:49,759 INFO  L87              Difference]: Start difference. First operand 7066 states and 11726 transitions. Second operand  has 7 states, 7 states have (on average 610.0) internal successors, (4270), 7 states have internal predecessors, (4270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 17:10:50,168 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 17:10:50,168 INFO  L93              Difference]: Finished difference Result 19652 states and 32603 transitions.
[2023-12-25 17:10:50,169 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-12-25 17:10:50,170 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 610.0) internal successors, (4270), 7 states have internal predecessors, (4270), 0 states have call successors, (0), 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 4533
[2023-12-25 17:10:50,173 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 17:10:50,182 INFO  L225             Difference]: With dead ends: 19652
[2023-12-25 17:10:50,182 INFO  L226             Difference]: Without dead ends: 13183
[2023-12-25 17:10:50,186 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 4542 GetRequests, 4530 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-12-25 17:10:50,187 INFO  L413           NwaCegarLoop]: 11262 mSDtfsCounter, 30068 mSDsluCounter, 44372 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30068 SdHoareTripleChecker+Valid, 55634 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-12-25 17:10:50,187 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [30068 Valid, 55634 Invalid, 48 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-12-25 17:10:50,193 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 13183 states.
[2023-12-25 17:10:50,243 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 13183 to 7071.
[2023-12-25 17:10:50,248 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7071 states, 7070 states have (on average 1.6595473833097596) internal successors, (11733), 7070 states have internal predecessors, (11733), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 17:10:50,254 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7071 states to 7071 states and 11733 transitions.
[2023-12-25 17:10:50,254 INFO  L78                 Accepts]: Start accepts. Automaton has 7071 states and 11733 transitions. Word has length 4533
[2023-12-25 17:10:50,256 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 17:10:50,256 INFO  L495      AbstractCegarLoop]: Abstraction has 7071 states and 11733 transitions.
[2023-12-25 17:10:50,256 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 610.0) internal successors, (4270), 7 states have internal predecessors, (4270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 17:10:50,256 INFO  L276                IsEmpty]: Start isEmpty. Operand 7071 states and 11733 transitions.
[2023-12-25 17:10:50,359 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 4535
[2023-12-25 17:10:50,359 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 17:10:50,360 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-12-25 17:10:50,436 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Forceful destruction successful, exit code 0
[2023-12-25 17:10:50,584 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 59 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable61
[2023-12-25 17:10:50,584 INFO  L420      AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 17:10:50,585 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 17:10:50,585 INFO  L85        PathProgramCache]: Analyzing trace with hash 107578347, now seen corresponding path program 1 times
[2023-12-25 17:10:50,585 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 17:10:50,585 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [638044348]
[2023-12-25 17:10:50,585 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 17:10:50,586 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 17:10:50,905 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 17:10:50,905 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [668734935]
[2023-12-25 17:10:50,906 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 17:10:50,906 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 17:10:50,906 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 17:10:50,907 INFO  L229       MonitoredProcess]: Starting monitored process 60 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-25 17:10:50,912 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Waiting until timeout for monitored process
[2023-12-25 17:10:56,881 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 17:10:57,072 INFO  L262         TraceCheckSpWp]: Trace formula consists of 25861 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-12-25 17:10:57,132 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 17:10:57,313 INFO  L134       CoverageAnalysis]: Checked inductivity of 390 backedges. 130 proven. 0 refuted. 0 times theorem prover too weak. 260 trivial. 0 not checked.
[2023-12-25 17:10:57,313 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 17:10:57,313 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 17:10:57,314 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [638044348]
[2023-12-25 17:10:57,314 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 17:10:57,314 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [668734935]
[2023-12-25 17:10:57,314 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [668734935] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 17:10:57,314 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 17:10:57,314 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-12-25 17:10:57,314 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1494788567]
[2023-12-25 17:10:57,314 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 17:10:57,316 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-12-25 17:10:57,316 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 17:10:57,318 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-12-25 17:10:57,318 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-12-25 17:10:57,318 INFO  L87              Difference]: Start difference. First operand 7071 states and 11733 transitions. Second operand  has 7 states, 7 states have (on average 610.7142857142857) internal successors, (4275), 7 states have internal predecessors, (4275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 17:10:57,717 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 17:10:57,717 INFO  L93              Difference]: Finished difference Result 19667 states and 32624 transitions.
[2023-12-25 17:10:57,717 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-12-25 17:10:57,718 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 610.7142857142857) internal successors, (4275), 7 states have internal predecessors, (4275), 0 states have call successors, (0), 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 4534
[2023-12-25 17:10:57,721 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 17:10:57,730 INFO  L225             Difference]: With dead ends: 19667
[2023-12-25 17:10:57,731 INFO  L226             Difference]: Without dead ends: 13187
[2023-12-25 17:10:57,735 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 4543 GetRequests, 4531 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-12-25 17:10:57,736 INFO  L413           NwaCegarLoop]: 11252 mSDtfsCounter, 30072 mSDsluCounter, 44342 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30072 SdHoareTripleChecker+Valid, 55594 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-12-25 17:10:57,736 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [30072 Valid, 55594 Invalid, 48 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-12-25 17:10:57,746 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 13187 states.
[2023-12-25 17:10:57,802 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 13187 to 7076.
[2023-12-25 17:10:57,807 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7076 states, 7075 states have (on average 1.6593639575971733) internal successors, (11740), 7075 states have internal predecessors, (11740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 17:10:57,813 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7076 states to 7076 states and 11740 transitions.
[2023-12-25 17:10:57,814 INFO  L78                 Accepts]: Start accepts. Automaton has 7076 states and 11740 transitions. Word has length 4534
[2023-12-25 17:10:57,815 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 17:10:57,815 INFO  L495      AbstractCegarLoop]: Abstraction has 7076 states and 11740 transitions.
[2023-12-25 17:10:57,816 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 610.7142857142857) internal successors, (4275), 7 states have internal predecessors, (4275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 17:10:57,816 INFO  L276                IsEmpty]: Start isEmpty. Operand 7076 states and 11740 transitions.
[2023-12-25 17:10:57,918 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 4536
[2023-12-25 17:10:57,919 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 17:10:57,920 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-12-25 17:10:57,998 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Forceful destruction successful, exit code 0
[2023-12-25 17:10:58,136 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 60 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable62
[2023-12-25 17:10:58,136 INFO  L420      AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 17:10:58,137 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 17:10:58,137 INFO  L85        PathProgramCache]: Analyzing trace with hash -437366003, now seen corresponding path program 1 times
[2023-12-25 17:10:58,137 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 17:10:58,137 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2087961835]
[2023-12-25 17:10:58,138 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 17:10:58,138 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 17:10:58,478 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 17:10:58,478 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1663192679]
[2023-12-25 17:10:58,479 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 17:10:58,479 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 17:10:58,480 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 17:10:58,480 INFO  L229       MonitoredProcess]: Starting monitored process 61 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-25 17:10:58,485 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Waiting until timeout for monitored process
[2023-12-25 17:11:04,538 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 17:11:04,693 INFO  L262         TraceCheckSpWp]: Trace formula consists of 25864 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-12-25 17:11:04,742 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 17:11:04,919 INFO  L134       CoverageAnalysis]: Checked inductivity of 390 backedges. 132 proven. 0 refuted. 0 times theorem prover too weak. 258 trivial. 0 not checked.
[2023-12-25 17:11:04,920 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 17:11:04,920 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 17:11:04,920 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2087961835]
[2023-12-25 17:11:04,920 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 17:11:04,920 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1663192679]
[2023-12-25 17:11:04,920 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1663192679] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 17:11:04,920 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 17:11:04,920 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-12-25 17:11:04,920 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [43596042]
[2023-12-25 17:11:04,920 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 17:11:04,922 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-12-25 17:11:04,923 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 17:11:04,924 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-12-25 17:11:04,924 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-12-25 17:11:04,925 INFO  L87              Difference]: Start difference. First operand 7076 states and 11740 transitions. Second operand  has 7 states, 7 states have (on average 611.1428571428571) internal successors, (4278), 7 states have internal predecessors, (4278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 17:11:05,220 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 17:11:05,220 INFO  L93              Difference]: Finished difference Result 19679 states and 32640 transitions.
[2023-12-25 17:11:05,221 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-12-25 17:11:05,222 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 611.1428571428571) internal successors, (4278), 7 states have internal predecessors, (4278), 0 states have call successors, (0), 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 4535
[2023-12-25 17:11:05,224 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 17:11:05,236 INFO  L225             Difference]: With dead ends: 19679
[2023-12-25 17:11:05,237 INFO  L226             Difference]: Without dead ends: 13188
[2023-12-25 17:11:05,243 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 4544 GetRequests, 4532 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-12-25 17:11:05,244 INFO  L413           NwaCegarLoop]: 11247 mSDtfsCounter, 30073 mSDsluCounter, 44327 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30073 SdHoareTripleChecker+Valid, 55574 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-12-25 17:11:05,244 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [30073 Valid, 55574 Invalid, 48 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-12-25 17:11:05,253 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 13188 states.
[2023-12-25 17:11:05,316 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 13188 to 7078.
[2023-12-25 17:11:05,322 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7078 states, 7077 states have (on average 1.659177617634591) internal successors, (11742), 7077 states have internal predecessors, (11742), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 17:11:05,329 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7078 states to 7078 states and 11742 transitions.
[2023-12-25 17:11:05,329 INFO  L78                 Accepts]: Start accepts. Automaton has 7078 states and 11742 transitions. Word has length 4535
[2023-12-25 17:11:05,331 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 17:11:05,331 INFO  L495      AbstractCegarLoop]: Abstraction has 7078 states and 11742 transitions.
[2023-12-25 17:11:05,332 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 611.1428571428571) internal successors, (4278), 7 states have internal predecessors, (4278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 17:11:05,332 INFO  L276                IsEmpty]: Start isEmpty. Operand 7078 states and 11742 transitions.
[2023-12-25 17:11:05,536 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 4537
[2023-12-25 17:11:05,536 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 17:11:05,537 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-12-25 17:11:05,615 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Forceful destruction successful, exit code 0
[2023-12-25 17:11:05,741 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63,61 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 17:11:05,741 INFO  L420      AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 17:11:05,742 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 17:11:05,742 INFO  L85        PathProgramCache]: Analyzing trace with hash 409362191, now seen corresponding path program 1 times
[2023-12-25 17:11:05,742 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 17:11:05,742 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [224388483]
[2023-12-25 17:11:05,742 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 17:11:05,742 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 17:11:06,059 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 17:11:06,059 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [532765318]
[2023-12-25 17:11:06,060 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 17:11:06,060 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 17:11:06,060 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 17:11:06,061 INFO  L229       MonitoredProcess]: Starting monitored process 62 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-25 17:11:06,062 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Waiting until timeout for monitored process
[2023-12-25 17:11:11,867 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 17:11:12,033 INFO  L262         TraceCheckSpWp]: Trace formula consists of 25868 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-12-25 17:11:12,089 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 17:11:12,241 INFO  L134       CoverageAnalysis]: Checked inductivity of 390 backedges. 136 proven. 0 refuted. 0 times theorem prover too weak. 254 trivial. 0 not checked.
[2023-12-25 17:11:12,241 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 17:11:12,241 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 17:11:12,241 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [224388483]
[2023-12-25 17:11:12,241 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 17:11:12,241 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [532765318]
[2023-12-25 17:11:12,241 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [532765318] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 17:11:12,241 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 17:11:12,242 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-12-25 17:11:12,242 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [353488871]
[2023-12-25 17:11:12,242 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 17:11:12,244 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-12-25 17:11:12,244 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 17:11:12,246 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-12-25 17:11:12,246 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-12-25 17:11:12,246 INFO  L87              Difference]: Start difference. First operand 7078 states and 11742 transitions. Second operand  has 7 states, 7 states have (on average 611.8571428571429) internal successors, (4283), 7 states have internal predecessors, (4283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 17:11:12,539 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 17:11:12,539 INFO  L93              Difference]: Finished difference Result 19688 states and 32651 transitions.
[2023-12-25 17:11:12,540 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-12-25 17:11:12,540 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 611.8571428571429) internal successors, (4283), 7 states have internal predecessors, (4283), 0 states have call successors, (0), 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 4536
[2023-12-25 17:11:12,543 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 17:11:12,554 INFO  L225             Difference]: With dead ends: 19688
[2023-12-25 17:11:12,555 INFO  L226             Difference]: Without dead ends: 13192
[2023-12-25 17:11:12,561 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 4545 GetRequests, 4533 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-12-25 17:11:12,561 INFO  L413           NwaCegarLoop]: 11237 mSDtfsCounter, 30075 mSDsluCounter, 44297 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30075 SdHoareTripleChecker+Valid, 55534 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-12-25 17:11:12,562 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [30075 Valid, 55534 Invalid, 48 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-12-25 17:11:12,569 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 13192 states.
[2023-12-25 17:11:12,626 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 13192 to 7083.
[2023-12-25 17:11:12,631 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7083 states, 7082 states have (on average 1.6589946342841004) internal successors, (11749), 7082 states have internal predecessors, (11749), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 17:11:12,637 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7083 states to 7083 states and 11749 transitions.
[2023-12-25 17:11:12,638 INFO  L78                 Accepts]: Start accepts. Automaton has 7083 states and 11749 transitions. Word has length 4536
[2023-12-25 17:11:12,640 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 17:11:12,640 INFO  L495      AbstractCegarLoop]: Abstraction has 7083 states and 11749 transitions.
[2023-12-25 17:11:12,641 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 611.8571428571429) internal successors, (4283), 7 states have internal predecessors, (4283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 17:11:12,641 INFO  L276                IsEmpty]: Start isEmpty. Operand 7083 states and 11749 transitions.
[2023-12-25 17:11:12,821 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 4538
[2023-12-25 17:11:12,821 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 17:11:12,822 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-12-25 17:11:12,894 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Forceful destruction successful, exit code 0
[2023-12-25 17:11:13,024 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64,62 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 17:11:13,025 INFO  L420      AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 17:11:13,025 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 17:11:13,025 INFO  L85        PathProgramCache]: Analyzing trace with hash 146120703, now seen corresponding path program 1 times
[2023-12-25 17:11:13,025 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 17:11:13,025 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [116272054]
[2023-12-25 17:11:13,026 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 17:11:13,026 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 17:11:13,346 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 17:11:13,346 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1127465512]
[2023-12-25 17:11:13,347 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 17:11:13,347 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 17:11:13,347 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 17:11:13,349 INFO  L229       MonitoredProcess]: Starting monitored process 63 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-25 17:11:13,351 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Waiting until timeout for monitored process
[2023-12-25 17:11:19,001 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 17:11:19,167 INFO  L262         TraceCheckSpWp]: Trace formula consists of 25871 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-12-25 17:11:19,223 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 17:11:19,616 INFO  L134       CoverageAnalysis]: Checked inductivity of 390 backedges. 140 proven. 0 refuted. 0 times theorem prover too weak. 250 trivial. 0 not checked.
[2023-12-25 17:11:19,616 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 17:11:19,616 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 17:11:19,616 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [116272054]
[2023-12-25 17:11:19,616 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 17:11:19,616 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1127465512]
[2023-12-25 17:11:19,616 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1127465512] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 17:11:19,616 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 17:11:19,617 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-12-25 17:11:19,617 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1186781229]
[2023-12-25 17:11:19,617 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 17:11:19,619 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-12-25 17:11:19,619 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 17:11:19,621 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-12-25 17:11:19,621 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-12-25 17:11:19,621 INFO  L87              Difference]: Start difference. First operand 7083 states and 11749 transitions. Second operand  has 7 states, 7 states have (on average 612.5714285714286) internal successors, (4288), 7 states have internal predecessors, (4288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 17:11:19,921 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 17:11:19,921 INFO  L93              Difference]: Finished difference Result 19703 states and 32672 transitions.
[2023-12-25 17:11:19,921 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-12-25 17:11:19,922 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 612.5714285714286) internal successors, (4288), 7 states have internal predecessors, (4288), 0 states have call successors, (0), 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 4537
[2023-12-25 17:11:19,925 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 17:11:19,936 INFO  L225             Difference]: With dead ends: 19703
[2023-12-25 17:11:19,937 INFO  L226             Difference]: Without dead ends: 13196
[2023-12-25 17:11:19,943 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 4546 GetRequests, 4534 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-12-25 17:11:19,943 INFO  L413           NwaCegarLoop]: 11227 mSDtfsCounter, 30079 mSDsluCounter, 44267 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30079 SdHoareTripleChecker+Valid, 55494 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-12-25 17:11:19,944 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [30079 Valid, 55494 Invalid, 48 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-12-25 17:11:19,951 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 13196 states.
[2023-12-25 17:11:20,010 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 13196 to 7088.
[2023-12-25 17:11:20,015 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7088 states, 7087 states have (on average 1.6588119091293918) internal successors, (11756), 7087 states have internal predecessors, (11756), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 17:11:20,021 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7088 states to 7088 states and 11756 transitions.
[2023-12-25 17:11:20,021 INFO  L78                 Accepts]: Start accepts. Automaton has 7088 states and 11756 transitions. Word has length 4537
[2023-12-25 17:11:20,023 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 17:11:20,023 INFO  L495      AbstractCegarLoop]: Abstraction has 7088 states and 11756 transitions.
[2023-12-25 17:11:20,024 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 612.5714285714286) internal successors, (4288), 7 states have internal predecessors, (4288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 17:11:20,024 INFO  L276                IsEmpty]: Start isEmpty. Operand 7088 states and 11756 transitions.
[2023-12-25 17:11:20,127 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 4539
[2023-12-25 17:11:20,127 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 17:11:20,128 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-12-25 17:11:20,206 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Forceful destruction successful, exit code 0
[2023-12-25 17:11:20,351 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 63 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable65
[2023-12-25 17:11:20,351 INFO  L420      AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 17:11:20,351 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 17:11:20,352 INFO  L85        PathProgramCache]: Analyzing trace with hash -1231888103, now seen corresponding path program 1 times
[2023-12-25 17:11:20,352 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 17:11:20,352 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [207154640]
[2023-12-25 17:11:20,352 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 17:11:20,352 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 17:11:20,734 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 17:11:20,735 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [81475325]
[2023-12-25 17:11:20,735 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 17:11:20,736 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 17:11:20,736 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 17:11:20,736 INFO  L229       MonitoredProcess]: Starting monitored process 64 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-25 17:11:20,738 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Waiting until timeout for monitored process
[2023-12-25 17:11:26,602 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 17:11:26,769 INFO  L262         TraceCheckSpWp]: Trace formula consists of 25875 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-12-25 17:11:26,825 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 17:11:27,003 INFO  L134       CoverageAnalysis]: Checked inductivity of 390 backedges. 144 proven. 0 refuted. 0 times theorem prover too weak. 246 trivial. 0 not checked.
[2023-12-25 17:11:27,003 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 17:11:27,003 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 17:11:27,003 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [207154640]
[2023-12-25 17:11:27,003 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 17:11:27,003 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [81475325]
[2023-12-25 17:11:27,003 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [81475325] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 17:11:27,003 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 17:11:27,004 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-12-25 17:11:27,004 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1400203813]
[2023-12-25 17:11:27,004 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 17:11:27,006 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-12-25 17:11:27,006 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 17:11:27,007 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-12-25 17:11:27,008 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-12-25 17:11:27,008 INFO  L87              Difference]: Start difference. First operand 7088 states and 11756 transitions. Second operand  has 7 states, 7 states have (on average 613.2857142857143) internal successors, (4293), 7 states have internal predecessors, (4293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 17:11:27,391 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 17:11:27,391 INFO  L93              Difference]: Finished difference Result 19718 states and 32693 transitions.
[2023-12-25 17:11:27,391 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-12-25 17:11:27,392 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 613.2857142857143) internal successors, (4293), 7 states have internal predecessors, (4293), 0 states have call successors, (0), 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 4538
[2023-12-25 17:11:27,395 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 17:11:27,405 INFO  L225             Difference]: With dead ends: 19718
[2023-12-25 17:11:27,405 INFO  L226             Difference]: Without dead ends: 13200
[2023-12-25 17:11:27,410 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 4547 GetRequests, 4535 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-12-25 17:11:27,410 INFO  L413           NwaCegarLoop]: 11217 mSDtfsCounter, 30083 mSDsluCounter, 44237 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30083 SdHoareTripleChecker+Valid, 55454 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-12-25 17:11:27,410 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [30083 Valid, 55454 Invalid, 48 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-12-25 17:11:27,418 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 13200 states.
[2023-12-25 17:11:27,470 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 13200 to 7093.
[2023-12-25 17:11:27,475 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7093 states, 7092 states have (on average 1.6586294416243654) internal successors, (11763), 7092 states have internal predecessors, (11763), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 17:11:27,480 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7093 states to 7093 states and 11763 transitions.
[2023-12-25 17:11:27,481 INFO  L78                 Accepts]: Start accepts. Automaton has 7093 states and 11763 transitions. Word has length 4538
[2023-12-25 17:11:27,482 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 17:11:27,482 INFO  L495      AbstractCegarLoop]: Abstraction has 7093 states and 11763 transitions.
[2023-12-25 17:11:27,483 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 613.2857142857143) internal successors, (4293), 7 states have internal predecessors, (4293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 17:11:27,483 INFO  L276                IsEmpty]: Start isEmpty. Operand 7093 states and 11763 transitions.
[2023-12-25 17:11:27,586 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 4540
[2023-12-25 17:11:27,586 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 17:11:27,587 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-12-25 17:11:27,657 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Forceful destruction successful, exit code 0
[2023-12-25 17:11:27,800 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 64 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable66
[2023-12-25 17:11:27,800 INFO  L420      AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 17:11:27,801 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 17:11:27,801 INFO  L85        PathProgramCache]: Analyzing trace with hash 727243121, now seen corresponding path program 1 times
[2023-12-25 17:11:27,801 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 17:11:27,801 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [112747108]
[2023-12-25 17:11:27,801 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 17:11:27,802 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 17:11:28,124 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 17:11:28,124 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1366463683]
[2023-12-25 17:11:28,125 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 17:11:28,125 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 17:11:28,125 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 17:11:28,126 INFO  L229       MonitoredProcess]: Starting monitored process 65 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-25 17:11:28,127 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Waiting until timeout for monitored process
[2023-12-25 17:11:34,016 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 17:11:34,175 INFO  L262         TraceCheckSpWp]: Trace formula consists of 25878 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-12-25 17:11:34,225 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 17:11:34,405 INFO  L134       CoverageAnalysis]: Checked inductivity of 390 backedges. 148 proven. 0 refuted. 0 times theorem prover too weak. 242 trivial. 0 not checked.
[2023-12-25 17:11:34,405 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 17:11:34,405 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 17:11:34,405 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [112747108]
[2023-12-25 17:11:34,405 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 17:11:34,405 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1366463683]
[2023-12-25 17:11:34,405 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1366463683] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 17:11:34,405 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 17:11:34,406 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-12-25 17:11:34,406 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [228285536]
[2023-12-25 17:11:34,406 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 17:11:34,408 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-12-25 17:11:34,408 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 17:11:34,410 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-12-25 17:11:34,410 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-12-25 17:11:34,410 INFO  L87              Difference]: Start difference. First operand 7093 states and 11763 transitions. Second operand  has 7 states, 7 states have (on average 614.0) internal successors, (4298), 7 states have internal predecessors, (4298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 17:11:34,707 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 17:11:34,707 INFO  L93              Difference]: Finished difference Result 19733 states and 32714 transitions.
[2023-12-25 17:11:34,708 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-12-25 17:11:34,709 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 614.0) internal successors, (4298), 7 states have internal predecessors, (4298), 0 states have call successors, (0), 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 4539
[2023-12-25 17:11:34,711 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 17:11:34,724 INFO  L225             Difference]: With dead ends: 19733
[2023-12-25 17:11:34,724 INFO  L226             Difference]: Without dead ends: 13204
[2023-12-25 17:11:34,731 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 4548 GetRequests, 4536 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-12-25 17:11:34,731 INFO  L413           NwaCegarLoop]: 11207 mSDtfsCounter, 30087 mSDsluCounter, 44207 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30087 SdHoareTripleChecker+Valid, 55414 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-12-25 17:11:34,731 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [30087 Valid, 55414 Invalid, 48 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-12-25 17:11:34,739 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 13204 states.
[2023-12-25 17:11:34,801 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 13204 to 7098.
[2023-12-25 17:11:34,806 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7098 states, 7097 states have (on average 1.6584472312244611) internal successors, (11770), 7097 states have internal predecessors, (11770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 17:11:34,812 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7098 states to 7098 states and 11770 transitions.
[2023-12-25 17:11:34,813 INFO  L78                 Accepts]: Start accepts. Automaton has 7098 states and 11770 transitions. Word has length 4539
[2023-12-25 17:11:34,814 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 17:11:34,814 INFO  L495      AbstractCegarLoop]: Abstraction has 7098 states and 11770 transitions.
[2023-12-25 17:11:34,815 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 614.0) internal successors, (4298), 7 states have internal predecessors, (4298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 17:11:34,815 INFO  L276                IsEmpty]: Start isEmpty. Operand 7098 states and 11770 transitions.
[2023-12-25 17:11:35,009 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 4541
[2023-12-25 17:11:35,009 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 17:11:35,010 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-12-25 17:11:35,086 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Forceful destruction successful, exit code 0
[2023-12-25 17:11:35,210 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67,65 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 17:11:35,211 INFO  L420      AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 17:11:35,211 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 17:11:35,212 INFO  L85        PathProgramCache]: Analyzing trace with hash -2057811037, now seen corresponding path program 1 times
[2023-12-25 17:11:35,212 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 17:11:35,212 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [360070129]
[2023-12-25 17:11:35,212 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 17:11:35,212 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 17:11:35,538 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 17:11:35,538 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1699034287]
[2023-12-25 17:11:35,539 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 17:11:35,539 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 17:11:35,539 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 17:11:35,541 INFO  L229       MonitoredProcess]: Starting monitored process 66 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-25 17:11:35,544 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Waiting until timeout for monitored process
[2023-12-25 17:11:41,273 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 17:11:41,445 INFO  L262         TraceCheckSpWp]: Trace formula consists of 25882 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-12-25 17:11:41,502 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 17:11:41,650 INFO  L134       CoverageAnalysis]: Checked inductivity of 390 backedges. 152 proven. 0 refuted. 0 times theorem prover too weak. 238 trivial. 0 not checked.
[2023-12-25 17:11:41,651 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 17:11:41,651 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 17:11:41,651 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [360070129]
[2023-12-25 17:11:41,651 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 17:11:41,651 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1699034287]
[2023-12-25 17:11:41,651 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1699034287] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 17:11:41,651 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 17:11:41,651 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-12-25 17:11:41,651 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1177928041]
[2023-12-25 17:11:41,652 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 17:11:41,654 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-12-25 17:11:41,654 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 17:11:41,655 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-12-25 17:11:41,655 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-12-25 17:11:41,656 INFO  L87              Difference]: Start difference. First operand 7098 states and 11770 transitions. Second operand  has 7 states, 7 states have (on average 614.7142857142857) internal successors, (4303), 7 states have internal predecessors, (4303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 17:11:42,103 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 17:11:42,104 INFO  L93              Difference]: Finished difference Result 19748 states and 32735 transitions.
[2023-12-25 17:11:42,104 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-12-25 17:11:42,105 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 614.7142857142857) internal successors, (4303), 7 states have internal predecessors, (4303), 0 states have call successors, (0), 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 4540
[2023-12-25 17:11:42,107 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 17:11:42,115 INFO  L225             Difference]: With dead ends: 19748
[2023-12-25 17:11:42,116 INFO  L226             Difference]: Without dead ends: 13208
[2023-12-25 17:11:42,118 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 4549 GetRequests, 4537 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-12-25 17:11:42,118 INFO  L413           NwaCegarLoop]: 11197 mSDtfsCounter, 30091 mSDsluCounter, 44177 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30091 SdHoareTripleChecker+Valid, 55374 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-12-25 17:11:42,118 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [30091 Valid, 55374 Invalid, 48 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-12-25 17:11:42,125 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 13208 states.
[2023-12-25 17:11:42,174 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 13208 to 7103.
[2023-12-25 17:11:42,179 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7103 states, 7102 states have (on average 1.6582652773866517) internal successors, (11777), 7102 states have internal predecessors, (11777), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 17:11:42,186 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7103 states to 7103 states and 11777 transitions.
[2023-12-25 17:11:42,186 INFO  L78                 Accepts]: Start accepts. Automaton has 7103 states and 11777 transitions. Word has length 4540
[2023-12-25 17:11:42,188 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 17:11:42,188 INFO  L495      AbstractCegarLoop]: Abstraction has 7103 states and 11777 transitions.
[2023-12-25 17:11:42,188 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 614.7142857142857) internal successors, (4303), 7 states have internal predecessors, (4303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 17:11:42,188 INFO  L276                IsEmpty]: Start isEmpty. Operand 7103 states and 11777 transitions.
[2023-12-25 17:11:42,292 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 4542
[2023-12-25 17:11:42,292 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 17:11:42,293 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-12-25 17:11:42,369 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Forceful destruction successful, exit code 0
[2023-12-25 17:11:42,501 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 66 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable68
[2023-12-25 17:11:42,502 INFO  L420      AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 17:11:42,502 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 17:11:42,502 INFO  L85        PathProgramCache]: Analyzing trace with hash 1351196515, now seen corresponding path program 1 times
[2023-12-25 17:11:42,502 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 17:11:42,502 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [92282248]
[2023-12-25 17:11:42,503 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 17:11:42,503 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 17:11:42,825 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 17:11:42,835 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [836604909]
[2023-12-25 17:11:42,837 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 17:11:42,837 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 17:11:42,837 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 17:11:42,838 INFO  L229       MonitoredProcess]: Starting monitored process 67 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-25 17:11:42,839 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (67)] Waiting until timeout for monitored process
[2023-12-25 17:11:48,653 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 17:11:48,819 INFO  L262         TraceCheckSpWp]: Trace formula consists of 25885 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-12-25 17:11:48,874 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 17:11:49,053 INFO  L134       CoverageAnalysis]: Checked inductivity of 390 backedges. 156 proven. 0 refuted. 0 times theorem prover too weak. 234 trivial. 0 not checked.
[2023-12-25 17:11:49,053 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 17:11:49,053 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 17:11:49,053 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [92282248]
[2023-12-25 17:11:49,053 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 17:11:49,053 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [836604909]
[2023-12-25 17:11:49,053 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [836604909] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 17:11:49,053 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 17:11:49,054 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-12-25 17:11:49,054 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2062276419]
[2023-12-25 17:11:49,054 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 17:11:49,056 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-12-25 17:11:49,056 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 17:11:49,057 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-12-25 17:11:49,058 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-12-25 17:11:49,058 INFO  L87              Difference]: Start difference. First operand 7103 states and 11777 transitions. Second operand  has 7 states, 7 states have (on average 615.4285714285714) internal successors, (4308), 7 states have internal predecessors, (4308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 17:11:49,354 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 17:11:49,354 INFO  L93              Difference]: Finished difference Result 19763 states and 32756 transitions.
[2023-12-25 17:11:49,355 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-12-25 17:11:49,355 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 615.4285714285714) internal successors, (4308), 7 states have internal predecessors, (4308), 0 states have call successors, (0), 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 4541
[2023-12-25 17:11:49,358 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 17:11:49,369 INFO  L225             Difference]: With dead ends: 19763
[2023-12-25 17:11:49,369 INFO  L226             Difference]: Without dead ends: 13212
[2023-12-25 17:11:49,376 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 4550 GetRequests, 4538 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-12-25 17:11:49,376 INFO  L413           NwaCegarLoop]: 11187 mSDtfsCounter, 30095 mSDsluCounter, 44147 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30095 SdHoareTripleChecker+Valid, 55334 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-12-25 17:11:49,377 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [30095 Valid, 55334 Invalid, 48 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-12-25 17:11:49,385 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 13212 states.
[2023-12-25 17:11:49,443 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 13212 to 7108.
[2023-12-25 17:11:49,448 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7108 states, 7107 states have (on average 1.6580835795694386) internal successors, (11784), 7107 states have internal predecessors, (11784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 17:11:49,454 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7108 states to 7108 states and 11784 transitions.
[2023-12-25 17:11:49,454 INFO  L78                 Accepts]: Start accepts. Automaton has 7108 states and 11784 transitions. Word has length 4541
[2023-12-25 17:11:49,456 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 17:11:49,456 INFO  L495      AbstractCegarLoop]: Abstraction has 7108 states and 11784 transitions.
[2023-12-25 17:11:49,456 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 615.4285714285714) internal successors, (4308), 7 states have internal predecessors, (4308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 17:11:49,457 INFO  L276                IsEmpty]: Start isEmpty. Operand 7108 states and 11784 transitions.
[2023-12-25 17:11:49,560 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 4543
[2023-12-25 17:11:49,560 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 17:11:49,561 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-12-25 17:11:49,633 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (67)] Ended with exit code 0
[2023-12-25 17:11:49,761 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 67 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable69
[2023-12-25 17:11:49,762 INFO  L420      AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 17:11:49,762 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 17:11:49,762 INFO  L85        PathProgramCache]: Analyzing trace with hash -207176019, now seen corresponding path program 1 times
[2023-12-25 17:11:49,762 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 17:11:49,762 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1676732255]
[2023-12-25 17:11:49,763 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 17:11:49,763 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 17:11:50,214 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 17:11:50,215 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [154722924]
[2023-12-25 17:11:50,216 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 17:11:50,216 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 17:11:50,216 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 17:11:50,217 INFO  L229       MonitoredProcess]: Starting monitored process 68 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-25 17:11:50,240 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (68)] Waiting until timeout for monitored process
[2023-12-25 17:11:56,071 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 17:11:56,229 INFO  L262         TraceCheckSpWp]: Trace formula consists of 25889 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-12-25 17:11:56,280 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 17:11:56,457 INFO  L134       CoverageAnalysis]: Checked inductivity of 390 backedges. 160 proven. 0 refuted. 0 times theorem prover too weak. 230 trivial. 0 not checked.
[2023-12-25 17:11:56,458 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 17:11:56,458 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 17:11:56,458 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1676732255]
[2023-12-25 17:11:56,458 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 17:11:56,458 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [154722924]
[2023-12-25 17:11:56,458 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [154722924] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 17:11:56,458 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 17:11:56,458 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-12-25 17:11:56,458 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1672104086]
[2023-12-25 17:11:56,458 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 17:11:56,460 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-12-25 17:11:56,460 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 17:11:56,462 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-12-25 17:11:56,462 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-12-25 17:11:56,462 INFO  L87              Difference]: Start difference. First operand 7108 states and 11784 transitions. Second operand  has 7 states, 7 states have (on average 616.1428571428571) internal successors, (4313), 7 states have internal predecessors, (4313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 17:11:56,757 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 17:11:56,757 INFO  L93              Difference]: Finished difference Result 19778 states and 32777 transitions.
[2023-12-25 17:11:56,757 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-12-25 17:11:56,758 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 616.1428571428571) internal successors, (4313), 7 states have internal predecessors, (4313), 0 states have call successors, (0), 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 4542
[2023-12-25 17:11:56,761 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 17:11:56,771 INFO  L225             Difference]: With dead ends: 19778
[2023-12-25 17:11:56,772 INFO  L226             Difference]: Without dead ends: 13216
[2023-12-25 17:11:56,778 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 4551 GetRequests, 4539 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-12-25 17:11:56,778 INFO  L413           NwaCegarLoop]: 11177 mSDtfsCounter, 30099 mSDsluCounter, 44117 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30099 SdHoareTripleChecker+Valid, 55294 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-12-25 17:11:56,778 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [30099 Valid, 55294 Invalid, 48 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-12-25 17:11:56,786 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 13216 states.
[2023-12-25 17:11:56,842 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 13216 to 7113.
[2023-12-25 17:11:56,846 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7113 states, 7112 states have (on average 1.657902137232846) internal successors, (11791), 7112 states have internal predecessors, (11791), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 17:11:56,852 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7113 states to 7113 states and 11791 transitions.
[2023-12-25 17:11:56,852 INFO  L78                 Accepts]: Start accepts. Automaton has 7113 states and 11791 transitions. Word has length 4542
[2023-12-25 17:11:56,854 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 17:11:56,854 INFO  L495      AbstractCegarLoop]: Abstraction has 7113 states and 11791 transitions.
[2023-12-25 17:11:56,855 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 616.1428571428571) internal successors, (4313), 7 states have internal predecessors, (4313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 17:11:56,855 INFO  L276                IsEmpty]: Start isEmpty. Operand 7113 states and 11791 transitions.
[2023-12-25 17:11:57,048 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 4544
[2023-12-25 17:11:57,048 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 17:11:57,049 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-12-25 17:11:57,122 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (68)] Forceful destruction successful, exit code 0
[2023-12-25 17:11:57,276 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70,68 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 17:11:57,276 INFO  L420      AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 17:11:57,276 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 17:11:57,277 INFO  L85        PathProgramCache]: Analyzing trace with hash 1788973525, now seen corresponding path program 1 times
[2023-12-25 17:11:57,277 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 17:11:57,277 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1454961674]
[2023-12-25 17:11:57,277 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 17:11:57,277 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 17:11:57,598 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 17:11:57,599 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [621099225]
[2023-12-25 17:11:57,600 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 17:11:57,600 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 17:11:57,600 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 17:11:57,601 INFO  L229       MonitoredProcess]: Starting monitored process 69 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-25 17:11:57,601 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (69)] Waiting until timeout for monitored process
[2023-12-25 17:12:03,371 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 17:12:03,543 INFO  L262         TraceCheckSpWp]: Trace formula consists of 25892 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-12-25 17:12:03,598 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 17:12:03,746 INFO  L134       CoverageAnalysis]: Checked inductivity of 390 backedges. 164 proven. 0 refuted. 0 times theorem prover too weak. 226 trivial. 0 not checked.
[2023-12-25 17:12:03,746 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 17:12:03,746 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 17:12:03,746 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1454961674]
[2023-12-25 17:12:03,746 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 17:12:03,746 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [621099225]
[2023-12-25 17:12:03,747 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [621099225] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 17:12:03,747 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 17:12:03,747 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-12-25 17:12:03,747 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1723733503]
[2023-12-25 17:12:03,747 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 17:12:03,749 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-12-25 17:12:03,749 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 17:12:03,751 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-12-25 17:12:03,751 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-12-25 17:12:03,751 INFO  L87              Difference]: Start difference. First operand 7113 states and 11791 transitions. Second operand  has 7 states, 7 states have (on average 616.8571428571429) internal successors, (4318), 7 states have internal predecessors, (4318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 17:12:04,160 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 17:12:04,160 INFO  L93              Difference]: Finished difference Result 19793 states and 32798 transitions.
[2023-12-25 17:12:04,160 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-12-25 17:12:04,161 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 616.8571428571429) internal successors, (4318), 7 states have internal predecessors, (4318), 0 states have call successors, (0), 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 4543
[2023-12-25 17:12:04,163 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 17:12:04,173 INFO  L225             Difference]: With dead ends: 19793
[2023-12-25 17:12:04,173 INFO  L226             Difference]: Without dead ends: 13220
[2023-12-25 17:12:04,178 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 4552 GetRequests, 4540 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-12-25 17:12:04,179 INFO  L413           NwaCegarLoop]: 11167 mSDtfsCounter, 30103 mSDsluCounter, 44087 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30103 SdHoareTripleChecker+Valid, 55254 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-12-25 17:12:04,179 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [30103 Valid, 55254 Invalid, 48 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-12-25 17:12:04,191 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 13220 states.
[2023-12-25 17:12:04,248 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 13220 to 7118.
[2023-12-25 17:12:04,253 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7118 states, 7117 states have (on average 1.6577209498384151) internal successors, (11798), 7117 states have internal predecessors, (11798), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 17:12:04,259 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7118 states to 7118 states and 11798 transitions.
[2023-12-25 17:12:04,260 INFO  L78                 Accepts]: Start accepts. Automaton has 7118 states and 11798 transitions. Word has length 4543
[2023-12-25 17:12:04,261 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 17:12:04,262 INFO  L495      AbstractCegarLoop]: Abstraction has 7118 states and 11798 transitions.
[2023-12-25 17:12:04,262 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 616.8571428571429) internal successors, (4318), 7 states have internal predecessors, (4318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 17:12:04,262 INFO  L276                IsEmpty]: Start isEmpty. Operand 7118 states and 11798 transitions.
[2023-12-25 17:12:04,366 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 4545
[2023-12-25 17:12:04,366 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 17:12:04,367 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-12-25 17:12:04,442 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (69)] Forceful destruction successful, exit code 0
[2023-12-25 17:12:04,568 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 69 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable71
[2023-12-25 17:12:04,568 INFO  L420      AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 17:12:04,569 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 17:12:04,569 INFO  L85        PathProgramCache]: Analyzing trace with hash 1469471287, now seen corresponding path program 1 times
[2023-12-25 17:12:04,569 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 17:12:04,569 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2037680693]
[2023-12-25 17:12:04,569 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 17:12:04,570 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 17:12:04,891 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 17:12:04,892 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2064737430]
[2023-12-25 17:12:04,893 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 17:12:04,893 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 17:12:04,893 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 17:12:04,895 INFO  L229       MonitoredProcess]: Starting monitored process 70 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-25 17:12:04,896 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (70)] Waiting until timeout for monitored process
[2023-12-25 17:12:10,783 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 17:12:10,942 INFO  L262         TraceCheckSpWp]: Trace formula consists of 25896 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-12-25 17:12:11,187 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 17:12:11,334 INFO  L134       CoverageAnalysis]: Checked inductivity of 390 backedges. 168 proven. 0 refuted. 0 times theorem prover too weak. 222 trivial. 0 not checked.
[2023-12-25 17:12:11,335 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 17:12:11,335 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 17:12:11,335 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2037680693]
[2023-12-25 17:12:11,335 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 17:12:11,335 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2064737430]
[2023-12-25 17:12:11,335 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [2064737430] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 17:12:11,335 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 17:12:11,335 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-12-25 17:12:11,335 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1821840107]
[2023-12-25 17:12:11,335 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 17:12:11,337 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-12-25 17:12:11,337 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 17:12:11,339 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-12-25 17:12:11,339 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-12-25 17:12:11,340 INFO  L87              Difference]: Start difference. First operand 7118 states and 11798 transitions. Second operand  has 7 states, 7 states have (on average 617.5714285714286) internal successors, (4323), 7 states have internal predecessors, (4323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 17:12:11,633 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 17:12:11,633 INFO  L93              Difference]: Finished difference Result 19808 states and 32819 transitions.
[2023-12-25 17:12:11,633 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-12-25 17:12:11,634 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 617.5714285714286) internal successors, (4323), 7 states have internal predecessors, (4323), 0 states have call successors, (0), 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 4544
[2023-12-25 17:12:11,637 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 17:12:11,648 INFO  L225             Difference]: With dead ends: 19808
[2023-12-25 17:12:11,649 INFO  L226             Difference]: Without dead ends: 13224
[2023-12-25 17:12:11,656 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 4553 GetRequests, 4541 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-12-25 17:12:11,657 INFO  L413           NwaCegarLoop]: 11157 mSDtfsCounter, 30107 mSDsluCounter, 44057 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30107 SdHoareTripleChecker+Valid, 55214 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-12-25 17:12:11,657 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [30107 Valid, 55214 Invalid, 48 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-12-25 17:12:11,666 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 13224 states.
[2023-12-25 17:12:11,726 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 13224 to 7123.
[2023-12-25 17:12:11,732 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7123 states, 7122 states have (on average 1.6575400168491996) internal successors, (11805), 7122 states have internal predecessors, (11805), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 17:12:11,738 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7123 states to 7123 states and 11805 transitions.
[2023-12-25 17:12:11,739 INFO  L78                 Accepts]: Start accepts. Automaton has 7123 states and 11805 transitions. Word has length 4544
[2023-12-25 17:12:11,740 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 17:12:11,740 INFO  L495      AbstractCegarLoop]: Abstraction has 7123 states and 11805 transitions.
[2023-12-25 17:12:11,741 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 617.5714285714286) internal successors, (4323), 7 states have internal predecessors, (4323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 17:12:11,741 INFO  L276                IsEmpty]: Start isEmpty. Operand 7123 states and 11805 transitions.
[2023-12-25 17:12:11,845 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 4546
[2023-12-25 17:12:11,846 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 17:12:11,847 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-12-25 17:12:11,931 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (70)] Forceful destruction successful, exit code 0
[2023-12-25 17:12:12,060 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72,70 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 17:12:12,060 INFO  L420      AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 17:12:12,060 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 17:12:12,061 INFO  L85        PathProgramCache]: Analyzing trace with hash 1570918599, now seen corresponding path program 1 times
[2023-12-25 17:12:12,061 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 17:12:12,061 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1836280319]
[2023-12-25 17:12:12,061 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 17:12:12,061 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 17:12:12,384 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 17:12:12,385 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [508961488]
[2023-12-25 17:12:12,386 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 17:12:12,386 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 17:12:12,386 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 17:12:12,387 INFO  L229       MonitoredProcess]: Starting monitored process 71 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-25 17:12:12,391 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (71)] Waiting until timeout for monitored process
[2023-12-25 17:12:18,175 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 17:12:18,351 INFO  L262         TraceCheckSpWp]: Trace formula consists of 25899 conjuncts, 21 conjunts are in the unsatisfiable core
[2023-12-25 17:12:18,408 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 17:12:18,593 INFO  L134       CoverageAnalysis]: Checked inductivity of 390 backedges. 170 proven. 0 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked.
[2023-12-25 17:12:18,593 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 17:12:18,593 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 17:12:18,593 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1836280319]
[2023-12-25 17:12:18,593 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 17:12:18,593 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [508961488]
[2023-12-25 17:12:18,594 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [508961488] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 17:12:18,594 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 17:12:18,594 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8
[2023-12-25 17:12:18,594 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2050194663]
[2023-12-25 17:12:18,594 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 17:12:18,596 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 8 states
[2023-12-25 17:12:18,596 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 17:12:18,598 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2023-12-25 17:12:18,598 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56
[2023-12-25 17:12:18,598 INFO  L87              Difference]: Start difference. First operand 7123 states and 11805 transitions. Second operand  has 8 states, 8 states have (on average 540.75) internal successors, (4326), 8 states have internal predecessors, (4326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 17:12:18,926 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 17:12:18,926 INFO  L93              Difference]: Finished difference Result 19816 states and 32829 transitions.
[2023-12-25 17:12:18,926 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. 
[2023-12-25 17:12:18,927 INFO  L78                 Accepts]: Start accepts. Automaton has  has 8 states, 8 states have (on average 540.75) internal successors, (4326), 8 states have internal predecessors, (4326), 0 states have call successors, (0), 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 4545
[2023-12-25 17:12:18,930 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 17:12:18,942 INFO  L225             Difference]: With dead ends: 19816
[2023-12-25 17:12:18,943 INFO  L226             Difference]: Without dead ends: 13221
[2023-12-25 17:12:18,950 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 4553 GetRequests, 4541 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182
[2023-12-25 17:12:18,950 INFO  L413           NwaCegarLoop]: 11148 mSDtfsCounter, 30103 mSDsluCounter, 54107 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30103 SdHoareTripleChecker+Valid, 65255 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-12-25 17:12:18,950 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [30103 Valid, 65255 Invalid, 52 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-12-25 17:12:18,960 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 13221 states.
[2023-12-25 17:12:19,025 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 13221 to 7125.
[2023-12-25 17:12:19,031 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7125 states, 7124 states have (on average 1.6573554183043233) internal successors, (11807), 7124 states have internal predecessors, (11807), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 17:12:19,038 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7125 states to 7125 states and 11807 transitions.
[2023-12-25 17:12:19,038 INFO  L78                 Accepts]: Start accepts. Automaton has 7125 states and 11807 transitions. Word has length 4545
[2023-12-25 17:12:19,040 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 17:12:19,040 INFO  L495      AbstractCegarLoop]: Abstraction has 7125 states and 11807 transitions.
[2023-12-25 17:12:19,041 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 8 states, 8 states have (on average 540.75) internal successors, (4326), 8 states have internal predecessors, (4326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 17:12:19,041 INFO  L276                IsEmpty]: Start isEmpty. Operand 7125 states and 11807 transitions.
[2023-12-25 17:12:19,145 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 4547
[2023-12-25 17:12:19,145 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 17:12:19,146 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-12-25 17:12:19,221 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (71)] Forceful destruction successful, exit code 0
[2023-12-25 17:12:19,354 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73,71 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 17:12:19,355 INFO  L420      AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 17:12:19,355 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 17:12:19,355 INFO  L85        PathProgramCache]: Analyzing trace with hash 218581085, now seen corresponding path program 1 times
[2023-12-25 17:12:19,355 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 17:12:19,355 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1880742034]
[2023-12-25 17:12:19,356 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 17:12:19,356 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 17:12:19,758 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 17:12:19,759 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1604037660]
[2023-12-25 17:12:19,760 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 17:12:19,760 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 17:12:19,760 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 17:12:19,761 INFO  L229       MonitoredProcess]: Starting monitored process 72 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-25 17:12:19,762 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (72)] Waiting until timeout for monitored process
[2023-12-25 17:12:25,504 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 17:12:25,670 INFO  L262         TraceCheckSpWp]: Trace formula consists of 25902 conjuncts, 17 conjunts are in the unsatisfiable core
[2023-12-25 17:12:25,724 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 17:12:25,920 INFO  L134       CoverageAnalysis]: Checked inductivity of 390 backedges. 166 proven. 0 refuted. 0 times theorem prover too weak. 224 trivial. 0 not checked.
[2023-12-25 17:12:25,920 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 17:12:25,920 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 17:12:25,920 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1880742034]
[2023-12-25 17:12:25,920 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 17:12:25,920 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1604037660]
[2023-12-25 17:12:25,920 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1604037660] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 17:12:25,920 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 17:12:25,921 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-12-25 17:12:25,921 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1455782623]
[2023-12-25 17:12:25,921 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 17:12:25,923 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-12-25 17:12:25,923 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 17:12:25,925 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-12-25 17:12:25,925 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-12-25 17:12:25,925 INFO  L87              Difference]: Start difference. First operand 7125 states and 11807 transitions. Second operand  has 7 states, 7 states have (on average 617.8571428571429) internal successors, (4325), 7 states have internal predecessors, (4325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 17:12:26,226 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 17:12:26,226 INFO  L93              Difference]: Finished difference Result 19820 states and 32831 transitions.
[2023-12-25 17:12:26,226 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. 
[2023-12-25 17:12:26,227 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 617.8571428571429) internal successors, (4325), 7 states have internal predecessors, (4325), 0 states have call successors, (0), 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 4546
[2023-12-25 17:12:26,230 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 17:12:26,241 INFO  L225             Difference]: With dead ends: 19820
[2023-12-25 17:12:26,241 INFO  L226             Difference]: Without dead ends: 13229
[2023-12-25 17:12:26,248 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 4554 GetRequests, 4543 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156
[2023-12-25 17:12:26,248 INFO  L413           NwaCegarLoop]: 11158 mSDtfsCounter, 30099 mSDsluCounter, 44058 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30099 SdHoareTripleChecker+Valid, 55216 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-12-25 17:12:26,248 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [30099 Valid, 55216 Invalid, 47 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-12-25 17:12:26,259 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 13229 states.
[2023-12-25 17:12:26,319 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 13229 to 7125.
[2023-12-25 17:12:26,325 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7125 states, 7124 states have (on average 1.6573554183043233) internal successors, (11807), 7124 states have internal predecessors, (11807), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 17:12:26,331 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7125 states to 7125 states and 11807 transitions.
[2023-12-25 17:12:26,331 INFO  L78                 Accepts]: Start accepts. Automaton has 7125 states and 11807 transitions. Word has length 4546
[2023-12-25 17:12:26,333 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 17:12:26,333 INFO  L495      AbstractCegarLoop]: Abstraction has 7125 states and 11807 transitions.
[2023-12-25 17:12:26,334 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 617.8571428571429) internal successors, (4325), 7 states have internal predecessors, (4325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 17:12:26,334 INFO  L276                IsEmpty]: Start isEmpty. Operand 7125 states and 11807 transitions.
[2023-12-25 17:12:26,437 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 4548
[2023-12-25 17:12:26,437 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 17:12:26,438 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-12-25 17:12:26,520 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (72)] Forceful destruction successful, exit code 0
[2023-12-25 17:12:26,660 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74,72 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 17:12:26,661 INFO  L420      AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 17:12:26,661 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 17:12:26,661 INFO  L85        PathProgramCache]: Analyzing trace with hash -1542626873, now seen corresponding path program 1 times
[2023-12-25 17:12:26,661 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 17:12:26,661 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [645573206]
[2023-12-25 17:12:26,662 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 17:12:26,662 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 17:12:27,163 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 17:12:27,163 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [837954538]
[2023-12-25 17:12:27,164 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 17:12:27,164 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 17:12:27,164 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 17:12:27,165 INFO  L229       MonitoredProcess]: Starting monitored process 73 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-25 17:12:27,166 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (73)] Waiting until timeout for monitored process
[2023-12-25 17:12:32,966 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 17:12:33,133 INFO  L262         TraceCheckSpWp]: Trace formula consists of 25905 conjuncts, 21 conjunts are in the unsatisfiable core
[2023-12-25 17:12:33,191 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 17:12:33,376 INFO  L134       CoverageAnalysis]: Checked inductivity of 390 backedges. 162 proven. 0 refuted. 0 times theorem prover too weak. 228 trivial. 0 not checked.
[2023-12-25 17:12:33,376 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 17:12:33,376 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 17:12:33,376 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [645573206]
[2023-12-25 17:12:33,376 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 17:12:33,376 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [837954538]
[2023-12-25 17:12:33,376 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [837954538] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 17:12:33,376 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 17:12:33,377 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8
[2023-12-25 17:12:33,377 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [416031813]
[2023-12-25 17:12:33,377 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 17:12:33,379 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 8 states
[2023-12-25 17:12:33,379 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 17:12:33,381 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2023-12-25 17:12:33,381 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56
[2023-12-25 17:12:33,381 INFO  L87              Difference]: Start difference. First operand 7125 states and 11807 transitions. Second operand  has 8 states, 8 states have (on average 540.5) internal successors, (4324), 8 states have internal predecessors, (4324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 17:12:33,715 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 17:12:33,715 INFO  L93              Difference]: Finished difference Result 19820 states and 32831 transitions.
[2023-12-25 17:12:33,715 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. 
[2023-12-25 17:12:33,716 INFO  L78                 Accepts]: Start accepts. Automaton has  has 8 states, 8 states have (on average 540.5) internal successors, (4324), 8 states have internal predecessors, (4324), 0 states have call successors, (0), 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 4547
[2023-12-25 17:12:33,719 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 17:12:33,732 INFO  L225             Difference]: With dead ends: 19820
[2023-12-25 17:12:33,732 INFO  L226             Difference]: Without dead ends: 13235
[2023-12-25 17:12:33,740 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 4555 GetRequests, 4543 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182
[2023-12-25 17:12:33,740 INFO  L413           NwaCegarLoop]: 11168 mSDtfsCounter, 30095 mSDsluCounter, 55247 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30095 SdHoareTripleChecker+Valid, 66415 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-12-25 17:12:33,740 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [30095 Valid, 66415 Invalid, 63 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-12-25 17:12:33,749 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 13235 states.
[2023-12-25 17:12:33,948 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 13235 to 7125.
[2023-12-25 17:12:33,954 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7125 states, 7124 states have (on average 1.6573554183043233) internal successors, (11807), 7124 states have internal predecessors, (11807), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 17:12:33,961 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7125 states to 7125 states and 11807 transitions.
[2023-12-25 17:12:33,961 INFO  L78                 Accepts]: Start accepts. Automaton has 7125 states and 11807 transitions. Word has length 4547
[2023-12-25 17:12:33,963 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 17:12:33,963 INFO  L495      AbstractCegarLoop]: Abstraction has 7125 states and 11807 transitions.
[2023-12-25 17:12:33,963 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 8 states, 8 states have (on average 540.5) internal successors, (4324), 8 states have internal predecessors, (4324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 17:12:33,963 INFO  L276                IsEmpty]: Start isEmpty. Operand 7125 states and 11807 transitions.
[2023-12-25 17:12:34,067 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 4549
[2023-12-25 17:12:34,067 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 17:12:34,068 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-12-25 17:12:34,140 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (73)] Ended with exit code 0
[2023-12-25 17:12:34,284 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 73 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable75
[2023-12-25 17:12:34,284 INFO  L420      AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 17:12:34,285 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 17:12:34,285 INFO  L85        PathProgramCache]: Analyzing trace with hash -1941355103, now seen corresponding path program 1 times
[2023-12-25 17:12:34,285 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 17:12:34,285 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [991280869]
[2023-12-25 17:12:34,285 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 17:12:34,285 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 17:12:34,658 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 17:12:34,658 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1699588466]
[2023-12-25 17:12:34,659 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 17:12:34,659 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 17:12:34,659 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 17:12:34,660 INFO  L229       MonitoredProcess]: Starting monitored process 74 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-25 17:12:34,662 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (74)] Waiting until timeout for monitored process
[2023-12-25 17:12:40,312 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 17:12:40,470 INFO  L262         TraceCheckSpWp]: Trace formula consists of 25908 conjuncts, 17 conjunts are in the unsatisfiable core
[2023-12-25 17:12:40,521 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 17:12:40,694 INFO  L134       CoverageAnalysis]: Checked inductivity of 390 backedges. 158 proven. 0 refuted. 0 times theorem prover too weak. 232 trivial. 0 not checked.
[2023-12-25 17:12:40,694 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 17:12:40,694 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 17:12:40,694 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [991280869]
[2023-12-25 17:12:40,694 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 17:12:40,695 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1699588466]
[2023-12-25 17:12:40,695 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1699588466] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 17:12:40,695 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 17:12:40,695 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-12-25 17:12:40,695 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [800916588]
[2023-12-25 17:12:40,695 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 17:12:40,697 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-12-25 17:12:40,697 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 17:12:40,699 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-12-25 17:12:40,699 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-12-25 17:12:40,699 INFO  L87              Difference]: Start difference. First operand 7125 states and 11807 transitions. Second operand  has 7 states, 7 states have (on average 617.5714285714286) internal successors, (4323), 7 states have internal predecessors, (4323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 17:12:41,002 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 17:12:41,002 INFO  L93              Difference]: Finished difference Result 19820 states and 32831 transitions.
[2023-12-25 17:12:41,002 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. 
[2023-12-25 17:12:41,003 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 617.5714285714286) internal successors, (4323), 7 states have internal predecessors, (4323), 0 states have call successors, (0), 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 4548
[2023-12-25 17:12:41,006 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 17:12:41,019 INFO  L225             Difference]: With dead ends: 19820
[2023-12-25 17:12:41,019 INFO  L226             Difference]: Without dead ends: 13241
[2023-12-25 17:12:41,026 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 4556 GetRequests, 4545 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156
[2023-12-25 17:12:41,027 INFO  L413           NwaCegarLoop]: 11178 mSDtfsCounter, 30091 mSDsluCounter, 44118 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30091 SdHoareTripleChecker+Valid, 55296 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-12-25 17:12:41,027 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [30091 Valid, 55296 Invalid, 47 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-12-25 17:12:41,035 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 13241 states.
[2023-12-25 17:12:41,211 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 13241 to 7125.
[2023-12-25 17:12:41,218 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7125 states, 7124 states have (on average 1.6573554183043233) internal successors, (11807), 7124 states have internal predecessors, (11807), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 17:12:41,225 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7125 states to 7125 states and 11807 transitions.
[2023-12-25 17:12:41,225 INFO  L78                 Accepts]: Start accepts. Automaton has 7125 states and 11807 transitions. Word has length 4548
[2023-12-25 17:12:41,227 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 17:12:41,227 INFO  L495      AbstractCegarLoop]: Abstraction has 7125 states and 11807 transitions.
[2023-12-25 17:12:41,228 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 617.5714285714286) internal successors, (4323), 7 states have internal predecessors, (4323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 17:12:41,228 INFO  L276                IsEmpty]: Start isEmpty. Operand 7125 states and 11807 transitions.
[2023-12-25 17:12:41,333 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 4550
[2023-12-25 17:12:41,333 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 17:12:41,334 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-12-25 17:12:41,410 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (74)] Forceful destruction successful, exit code 0
[2023-12-25 17:12:41,538 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76,74 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 17:12:41,539 INFO  L420      AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 17:12:41,539 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 17:12:41,539 INFO  L85        PathProgramCache]: Analyzing trace with hash 2046479175, now seen corresponding path program 1 times
[2023-12-25 17:12:41,539 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 17:12:41,539 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [912731090]
[2023-12-25 17:12:41,540 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 17:12:41,540 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 17:12:41,863 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 17:12:41,863 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [23855371]
[2023-12-25 17:12:41,864 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 17:12:41,864 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 17:12:41,864 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 17:12:41,866 INFO  L229       MonitoredProcess]: Starting monitored process 75 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-25 17:12:41,867 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (75)] Waiting until timeout for monitored process
[2023-12-25 17:12:47,807 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 17:12:47,967 INFO  L262         TraceCheckSpWp]: Trace formula consists of 25911 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-12-25 17:12:48,021 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 17:12:48,186 INFO  L134       CoverageAnalysis]: Checked inductivity of 390 backedges. 154 proven. 0 refuted. 0 times theorem prover too weak. 236 trivial. 0 not checked.
[2023-12-25 17:12:48,186 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 17:12:48,186 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 17:12:48,186 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [912731090]
[2023-12-25 17:12:48,186 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 17:12:48,186 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [23855371]
[2023-12-25 17:12:48,186 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [23855371] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 17:12:48,186 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 17:12:48,187 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8
[2023-12-25 17:12:48,187 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1520554511]
[2023-12-25 17:12:48,187 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 17:12:48,189 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 8 states
[2023-12-25 17:12:48,189 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 17:12:48,191 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2023-12-25 17:12:48,191 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56
[2023-12-25 17:12:48,191 INFO  L87              Difference]: Start difference. First operand 7125 states and 11807 transitions. Second operand  has 8 states, 8 states have (on average 540.25) internal successors, (4322), 8 states have internal predecessors, (4322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 17:12:48,530 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 17:12:48,530 INFO  L93              Difference]: Finished difference Result 19820 states and 32831 transitions.
[2023-12-25 17:12:48,531 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. 
[2023-12-25 17:12:48,532 INFO  L78                 Accepts]: Start accepts. Automaton has  has 8 states, 8 states have (on average 540.25) internal successors, (4322), 8 states have internal predecessors, (4322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4549
[2023-12-25 17:12:48,534 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 17:12:48,546 INFO  L225             Difference]: With dead ends: 19820
[2023-12-25 17:12:48,547 INFO  L226             Difference]: Without dead ends: 13247
[2023-12-25 17:12:48,554 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 4557 GetRequests, 4545 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182
[2023-12-25 17:12:48,554 INFO  L413           NwaCegarLoop]: 11188 mSDtfsCounter, 30087 mSDsluCounter, 55327 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30087 SdHoareTripleChecker+Valid, 66515 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-12-25 17:12:48,554 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [30087 Valid, 66515 Invalid, 63 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-12-25 17:12:48,563 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 13247 states.
[2023-12-25 17:12:48,627 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 13247 to 7125.
[2023-12-25 17:12:48,632 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7125 states, 7124 states have (on average 1.6573554183043233) internal successors, (11807), 7124 states have internal predecessors, (11807), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 17:12:48,639 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7125 states to 7125 states and 11807 transitions.
[2023-12-25 17:12:48,639 INFO  L78                 Accepts]: Start accepts. Automaton has 7125 states and 11807 transitions. Word has length 4549
[2023-12-25 17:12:48,641 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 17:12:48,641 INFO  L495      AbstractCegarLoop]: Abstraction has 7125 states and 11807 transitions.
[2023-12-25 17:12:48,642 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 8 states, 8 states have (on average 540.25) internal successors, (4322), 8 states have internal predecessors, (4322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 17:12:48,642 INFO  L276                IsEmpty]: Start isEmpty. Operand 7125 states and 11807 transitions.
[2023-12-25 17:12:48,820 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 4551
[2023-12-25 17:12:48,820 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 17:12:48,821 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-12-25 17:12:48,898 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (75)] Ended with exit code 0
[2023-12-25 17:12:49,036 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77,75 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 17:12:49,037 INFO  L420      AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 17:12:49,037 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 17:12:49,037 INFO  L85        PathProgramCache]: Analyzing trace with hash -1632092315, now seen corresponding path program 1 times
[2023-12-25 17:12:49,037 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 17:12:49,037 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [937473299]
[2023-12-25 17:12:49,038 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 17:12:49,038 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 17:12:49,370 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 17:12:49,370 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1869756479]
[2023-12-25 17:12:49,371 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 17:12:49,371 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 17:12:49,372 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 17:12:49,374 INFO  L229       MonitoredProcess]: Starting monitored process 76 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-25 17:12:49,374 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (76)] Waiting until timeout for monitored process
[2023-12-25 17:12:55,112 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 17:12:55,283 INFO  L262         TraceCheckSpWp]: Trace formula consists of 25914 conjuncts, 17 conjunts are in the unsatisfiable core
[2023-12-25 17:12:55,494 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 17:12:55,677 INFO  L134       CoverageAnalysis]: Checked inductivity of 390 backedges. 150 proven. 0 refuted. 0 times theorem prover too weak. 240 trivial. 0 not checked.
[2023-12-25 17:12:55,677 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 17:12:55,677 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 17:12:55,677 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [937473299]
[2023-12-25 17:12:55,677 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 17:12:55,677 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1869756479]
[2023-12-25 17:12:55,677 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1869756479] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 17:12:55,677 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 17:12:55,678 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-12-25 17:12:55,678 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [845886846]
[2023-12-25 17:12:55,678 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 17:12:55,680 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-12-25 17:12:55,680 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 17:12:55,682 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-12-25 17:12:55,682 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-12-25 17:12:55,683 INFO  L87              Difference]: Start difference. First operand 7125 states and 11807 transitions. Second operand  has 7 states, 7 states have (on average 617.2857142857143) internal successors, (4321), 7 states have internal predecessors, (4321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 17:12:55,983 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 17:12:55,983 INFO  L93              Difference]: Finished difference Result 19820 states and 32831 transitions.
[2023-12-25 17:12:55,984 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. 
[2023-12-25 17:12:55,985 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 617.2857142857143) internal successors, (4321), 7 states have internal predecessors, (4321), 0 states have call successors, (0), 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 4550
[2023-12-25 17:12:55,987 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 17:12:55,999 INFO  L225             Difference]: With dead ends: 19820
[2023-12-25 17:12:55,999 INFO  L226             Difference]: Without dead ends: 13253
[2023-12-25 17:12:56,006 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 4558 GetRequests, 4547 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156
[2023-12-25 17:12:56,007 INFO  L413           NwaCegarLoop]: 11198 mSDtfsCounter, 30083 mSDsluCounter, 44178 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30083 SdHoareTripleChecker+Valid, 55376 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-12-25 17:12:56,007 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [30083 Valid, 55376 Invalid, 47 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-12-25 17:12:56,016 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 13253 states.
[2023-12-25 17:12:56,079 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 13253 to 7125.
[2023-12-25 17:12:56,086 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7125 states, 7124 states have (on average 1.6573554183043233) internal successors, (11807), 7124 states have internal predecessors, (11807), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 17:12:56,094 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7125 states to 7125 states and 11807 transitions.
[2023-12-25 17:12:56,094 INFO  L78                 Accepts]: Start accepts. Automaton has 7125 states and 11807 transitions. Word has length 4550
[2023-12-25 17:12:56,096 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 17:12:56,096 INFO  L495      AbstractCegarLoop]: Abstraction has 7125 states and 11807 transitions.
[2023-12-25 17:12:56,097 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 617.2857142857143) internal successors, (4321), 7 states have internal predecessors, (4321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 17:12:56,097 INFO  L276                IsEmpty]: Start isEmpty. Operand 7125 states and 11807 transitions.
[2023-12-25 17:12:56,202 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 4552
[2023-12-25 17:12:56,203 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 17:12:56,203 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-12-25 17:12:56,281 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (76)] Ended with exit code 0
[2023-12-25 17:12:56,421 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 76 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable78
[2023-12-25 17:12:56,421 INFO  L420      AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 17:12:56,422 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 17:12:56,422 INFO  L85        PathProgramCache]: Analyzing trace with hash 629345607, now seen corresponding path program 1 times
[2023-12-25 17:12:56,422 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 17:12:56,422 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1316731172]
[2023-12-25 17:12:56,422 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 17:12:56,423 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 17:12:56,896 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 17:12:56,896 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [702927017]
[2023-12-25 17:12:56,897 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 17:12:56,897 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 17:12:56,897 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 17:12:56,898 INFO  L229       MonitoredProcess]: Starting monitored process 77 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-25 17:12:56,899 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (77)] Waiting until timeout for monitored process
[2023-12-25 17:13:02,706 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 17:13:02,866 INFO  L262         TraceCheckSpWp]: Trace formula consists of 25917 conjuncts, 21 conjunts are in the unsatisfiable core
[2023-12-25 17:13:02,920 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 17:13:03,077 INFO  L134       CoverageAnalysis]: Checked inductivity of 390 backedges. 146 proven. 0 refuted. 0 times theorem prover too weak. 244 trivial. 0 not checked.
[2023-12-25 17:13:03,077 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 17:13:03,078 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 17:13:03,078 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1316731172]
[2023-12-25 17:13:03,078 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 17:13:03,078 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [702927017]
[2023-12-25 17:13:03,078 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [702927017] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 17:13:03,078 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 17:13:03,078 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8
[2023-12-25 17:13:03,078 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1914966377]
[2023-12-25 17:13:03,078 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 17:13:03,080 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 8 states
[2023-12-25 17:13:03,080 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 17:13:03,082 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2023-12-25 17:13:03,082 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56
[2023-12-25 17:13:03,083 INFO  L87              Difference]: Start difference. First operand 7125 states and 11807 transitions. Second operand  has 8 states, 8 states have (on average 540.0) internal successors, (4320), 8 states have internal predecessors, (4320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 17:13:03,548 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 17:13:03,548 INFO  L93              Difference]: Finished difference Result 19820 states and 32831 transitions.
[2023-12-25 17:13:03,549 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. 
[2023-12-25 17:13:03,549 INFO  L78                 Accepts]: Start accepts. Automaton has  has 8 states, 8 states have (on average 540.0) internal successors, (4320), 8 states have internal predecessors, (4320), 0 states have call successors, (0), 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 4551
[2023-12-25 17:13:03,552 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 17:13:03,564 INFO  L225             Difference]: With dead ends: 19820
[2023-12-25 17:13:03,564 INFO  L226             Difference]: Without dead ends: 13259
[2023-12-25 17:13:03,570 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 4559 GetRequests, 4547 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182
[2023-12-25 17:13:03,570 INFO  L413           NwaCegarLoop]: 11208 mSDtfsCounter, 30079 mSDsluCounter, 54305 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30079 SdHoareTripleChecker+Valid, 65513 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-12-25 17:13:03,571 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [30079 Valid, 65513 Invalid, 52 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-12-25 17:13:03,579 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 13259 states.
[2023-12-25 17:13:03,643 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 13259 to 7125.
[2023-12-25 17:13:03,649 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7125 states, 7124 states have (on average 1.6573554183043233) internal successors, (11807), 7124 states have internal predecessors, (11807), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 17:13:03,655 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7125 states to 7125 states and 11807 transitions.
[2023-12-25 17:13:03,656 INFO  L78                 Accepts]: Start accepts. Automaton has 7125 states and 11807 transitions. Word has length 4551
[2023-12-25 17:13:03,657 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 17:13:03,658 INFO  L495      AbstractCegarLoop]: Abstraction has 7125 states and 11807 transitions.
[2023-12-25 17:13:03,658 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 8 states, 8 states have (on average 540.0) internal successors, (4320), 8 states have internal predecessors, (4320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 17:13:03,658 INFO  L276                IsEmpty]: Start isEmpty. Operand 7125 states and 11807 transitions.
[2023-12-25 17:13:03,762 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 4553
[2023-12-25 17:13:03,763 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 17:13:03,763 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-12-25 17:13:03,839 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (77)] Ended with exit code 0
[2023-12-25 17:13:03,983 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 77 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable79
[2023-12-25 17:13:03,983 INFO  L420      AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 17:13:03,983 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 17:13:03,984 INFO  L85        PathProgramCache]: Analyzing trace with hash -1182295, now seen corresponding path program 1 times
[2023-12-25 17:13:03,984 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 17:13:03,984 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [995565744]
[2023-12-25 17:13:03,984 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 17:13:03,984 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 17:13:04,318 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 17:13:04,318 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1379620314]
[2023-12-25 17:13:04,319 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 17:13:04,319 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 17:13:04,319 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 17:13:04,320 INFO  L229       MonitoredProcess]: Starting monitored process 78 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-25 17:13:04,321 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (78)] Waiting until timeout for monitored process
[2023-12-25 17:13:10,334 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 17:13:10,507 INFO  L262         TraceCheckSpWp]: Trace formula consists of 25920 conjuncts, 17 conjunts are in the unsatisfiable core
[2023-12-25 17:13:10,565 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 17:13:10,716 INFO  L134       CoverageAnalysis]: Checked inductivity of 390 backedges. 142 proven. 0 refuted. 0 times theorem prover too weak. 248 trivial. 0 not checked.
[2023-12-25 17:13:10,716 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 17:13:10,716 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 17:13:10,716 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [995565744]
[2023-12-25 17:13:10,717 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 17:13:10,717 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1379620314]
[2023-12-25 17:13:10,717 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1379620314] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 17:13:10,717 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 17:13:10,717 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-12-25 17:13:10,717 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1096296972]
[2023-12-25 17:13:10,717 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 17:13:10,719 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-12-25 17:13:10,719 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 17:13:10,721 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-12-25 17:13:10,721 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-12-25 17:13:10,721 INFO  L87              Difference]: Start difference. First operand 7125 states and 11807 transitions. Second operand  has 7 states, 7 states have (on average 617.0) internal successors, (4319), 7 states have internal predecessors, (4319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 17:13:11,107 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 17:13:11,107 INFO  L93              Difference]: Finished difference Result 19820 states and 32831 transitions.
[2023-12-25 17:13:11,107 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. 
[2023-12-25 17:13:11,108 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 617.0) internal successors, (4319), 7 states have internal predecessors, (4319), 0 states have call successors, (0), 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 4552
[2023-12-25 17:13:11,111 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 17:13:11,123 INFO  L225             Difference]: With dead ends: 19820
[2023-12-25 17:13:11,123 INFO  L226             Difference]: Without dead ends: 13265
[2023-12-25 17:13:11,130 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 4560 GetRequests, 4549 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156
[2023-12-25 17:13:11,131 INFO  L413           NwaCegarLoop]: 11218 mSDtfsCounter, 30075 mSDsluCounter, 44238 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30075 SdHoareTripleChecker+Valid, 55456 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-12-25 17:13:11,131 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [30075 Valid, 55456 Invalid, 47 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [0 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-12-25 17:13:11,141 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 13265 states.
[2023-12-25 17:13:11,209 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 13265 to 7125.
[2023-12-25 17:13:11,215 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7125 states, 7124 states have (on average 1.6573554183043233) internal successors, (11807), 7124 states have internal predecessors, (11807), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 17:13:11,222 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7125 states to 7125 states and 11807 transitions.
[2023-12-25 17:13:11,223 INFO  L78                 Accepts]: Start accepts. Automaton has 7125 states and 11807 transitions. Word has length 4552
[2023-12-25 17:13:11,225 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 17:13:11,225 INFO  L495      AbstractCegarLoop]: Abstraction has 7125 states and 11807 transitions.
[2023-12-25 17:13:11,225 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 617.0) internal successors, (4319), 7 states have internal predecessors, (4319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 17:13:11,225 INFO  L276                IsEmpty]: Start isEmpty. Operand 7125 states and 11807 transitions.
[2023-12-25 17:13:11,330 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 4554
[2023-12-25 17:13:11,330 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 17:13:11,331 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-12-25 17:13:11,413 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (78)] Forceful destruction successful, exit code 0
[2023-12-25 17:13:11,531 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80,78 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 17:13:11,532 INFO  L420      AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 17:13:11,532 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 17:13:11,532 INFO  L85        PathProgramCache]: Analyzing trace with hash 31893447, now seen corresponding path program 1 times
[2023-12-25 17:13:11,532 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 17:13:11,532 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [909468363]
[2023-12-25 17:13:11,533 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 17:13:11,533 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 17:13:11,845 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 17:13:11,845 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [385849913]
[2023-12-25 17:13:11,846 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 17:13:11,846 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 17:13:11,847 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 17:13:11,849 INFO  L229       MonitoredProcess]: Starting monitored process 79 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-25 17:13:11,850 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (79)] Waiting until timeout for monitored process
[2023-12-25 17:13:17,885 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 17:13:18,061 INFO  L262         TraceCheckSpWp]: Trace formula consists of 25923 conjuncts, 21 conjunts are in the unsatisfiable core
[2023-12-25 17:13:18,116 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 17:13:18,278 INFO  L134       CoverageAnalysis]: Checked inductivity of 390 backedges. 138 proven. 0 refuted. 0 times theorem prover too weak. 252 trivial. 0 not checked.
[2023-12-25 17:13:18,278 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 17:13:18,278 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 17:13:18,278 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [909468363]
[2023-12-25 17:13:18,278 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 17:13:18,278 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [385849913]
[2023-12-25 17:13:18,278 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [385849913] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 17:13:18,278 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 17:13:18,278 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8
[2023-12-25 17:13:18,279 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1777921449]
[2023-12-25 17:13:18,279 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 17:13:18,281 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 8 states
[2023-12-25 17:13:18,281 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 17:13:18,282 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2023-12-25 17:13:18,283 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56
[2023-12-25 17:13:18,283 INFO  L87              Difference]: Start difference. First operand 7125 states and 11807 transitions. Second operand  has 8 states, 8 states have (on average 539.75) internal successors, (4318), 8 states have internal predecessors, (4318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 17:13:18,603 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 17:13:18,603 INFO  L93              Difference]: Finished difference Result 19820 states and 32831 transitions.
[2023-12-25 17:13:18,603 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. 
[2023-12-25 17:13:18,604 INFO  L78                 Accepts]: Start accepts. Automaton has  has 8 states, 8 states have (on average 539.75) internal successors, (4318), 8 states have internal predecessors, (4318), 0 states have call successors, (0), 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 4553
[2023-12-25 17:13:18,607 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 17:13:18,619 INFO  L225             Difference]: With dead ends: 19820
[2023-12-25 17:13:18,619 INFO  L226             Difference]: Without dead ends: 13271
[2023-12-25 17:13:18,626 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 4561 GetRequests, 4549 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182
[2023-12-25 17:13:18,626 INFO  L413           NwaCegarLoop]: 11228 mSDtfsCounter, 30071 mSDsluCounter, 54371 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30071 SdHoareTripleChecker+Valid, 65599 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-12-25 17:13:18,626 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [30071 Valid, 65599 Invalid, 52 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-12-25 17:13:18,634 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 13271 states.
[2023-12-25 17:13:18,695 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 13271 to 7125.
[2023-12-25 17:13:18,701 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7125 states, 7124 states have (on average 1.6573554183043233) internal successors, (11807), 7124 states have internal predecessors, (11807), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 17:13:18,707 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7125 states to 7125 states and 11807 transitions.
[2023-12-25 17:13:18,707 INFO  L78                 Accepts]: Start accepts. Automaton has 7125 states and 11807 transitions. Word has length 4553
[2023-12-25 17:13:18,709 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 17:13:18,709 INFO  L495      AbstractCegarLoop]: Abstraction has 7125 states and 11807 transitions.
[2023-12-25 17:13:18,709 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 8 states, 8 states have (on average 539.75) internal successors, (4318), 8 states have internal predecessors, (4318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 17:13:18,710 INFO  L276                IsEmpty]: Start isEmpty. Operand 7125 states and 11807 transitions.
[2023-12-25 17:13:18,903 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 4555
[2023-12-25 17:13:18,903 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 17:13:18,904 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-12-25 17:13:18,980 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (79)] Ended with exit code 0
[2023-12-25 17:13:19,132 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81,79 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 17:13:19,132 INFO  L420      AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 17:13:19,133 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 17:13:19,133 INFO  L85        PathProgramCache]: Analyzing trace with hash 892086381, now seen corresponding path program 1 times
[2023-12-25 17:13:19,133 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 17:13:19,133 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1942546092]
[2023-12-25 17:13:19,133 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 17:13:19,134 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 17:13:19,455 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 17:13:19,455 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1177665995]
[2023-12-25 17:13:19,456 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 17:13:19,456 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 17:13:19,456 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 17:13:19,457 INFO  L229       MonitoredProcess]: Starting monitored process 80 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-25 17:13:19,458 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (80)] Waiting until timeout for monitored process
[2023-12-25 17:13:25,414 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 17:13:25,562 INFO  L262         TraceCheckSpWp]: Trace formula consists of 25926 conjuncts, 17 conjunts are in the unsatisfiable core
[2023-12-25 17:13:25,605 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 17:13:25,797 INFO  L134       CoverageAnalysis]: Checked inductivity of 390 backedges. 134 proven. 0 refuted. 0 times theorem prover too weak. 256 trivial. 0 not checked.
[2023-12-25 17:13:25,797 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 17:13:25,797 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 17:13:25,797 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1942546092]
[2023-12-25 17:13:25,797 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 17:13:25,797 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1177665995]
[2023-12-25 17:13:25,797 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1177665995] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 17:13:25,797 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 17:13:25,798 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-12-25 17:13:25,798 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1129774655]
[2023-12-25 17:13:25,798 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 17:13:25,800 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-12-25 17:13:25,800 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 17:13:25,802 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-12-25 17:13:25,802 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-12-25 17:13:25,802 INFO  L87              Difference]: Start difference. First operand 7125 states and 11807 transitions. Second operand  has 7 states, 7 states have (on average 616.7142857142857) internal successors, (4317), 7 states have internal predecessors, (4317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 17:13:26,104 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 17:13:26,104 INFO  L93              Difference]: Finished difference Result 19820 states and 32831 transitions.
[2023-12-25 17:13:26,105 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. 
[2023-12-25 17:13:26,106 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 616.7142857142857) internal successors, (4317), 7 states have internal predecessors, (4317), 0 states have call successors, (0), 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 4554
[2023-12-25 17:13:26,108 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 17:13:26,120 INFO  L225             Difference]: With dead ends: 19820
[2023-12-25 17:13:26,120 INFO  L226             Difference]: Without dead ends: 13277
[2023-12-25 17:13:26,127 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 4562 GetRequests, 4551 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156
[2023-12-25 17:13:26,127 INFO  L413           NwaCegarLoop]: 11238 mSDtfsCounter, 30067 mSDsluCounter, 44298 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30067 SdHoareTripleChecker+Valid, 55536 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-12-25 17:13:26,128 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [30067 Valid, 55536 Invalid, 47 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-12-25 17:13:26,139 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 13277 states.
[2023-12-25 17:13:26,200 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 13277 to 7125.
[2023-12-25 17:13:26,205 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7125 states, 7124 states have (on average 1.6573554183043233) internal successors, (11807), 7124 states have internal predecessors, (11807), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 17:13:26,211 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7125 states to 7125 states and 11807 transitions.
[2023-12-25 17:13:26,212 INFO  L78                 Accepts]: Start accepts. Automaton has 7125 states and 11807 transitions. Word has length 4554
[2023-12-25 17:13:26,213 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 17:13:26,213 INFO  L495      AbstractCegarLoop]: Abstraction has 7125 states and 11807 transitions.
[2023-12-25 17:13:26,214 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 616.7142857142857) internal successors, (4317), 7 states have internal predecessors, (4317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 17:13:26,214 INFO  L276                IsEmpty]: Start isEmpty. Operand 7125 states and 11807 transitions.
[2023-12-25 17:13:26,318 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 4556
[2023-12-25 17:13:26,318 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 17:13:26,319 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-12-25 17:13:26,395 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (80)] Forceful destruction successful, exit code 0
[2023-12-25 17:13:26,532 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 80 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable82
[2023-12-25 17:13:26,532 INFO  L420      AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 17:13:26,532 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 17:13:26,533 INFO  L85        PathProgramCache]: Analyzing trace with hash 1334713031, now seen corresponding path program 1 times
[2023-12-25 17:13:26,533 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 17:13:26,533 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1625053153]
[2023-12-25 17:13:26,533 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 17:13:26,533 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 17:13:26,928 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 17:13:26,928 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1583197717]
[2023-12-25 17:13:26,929 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 17:13:26,929 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 17:13:26,930 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 17:13:26,930 INFO  L229       MonitoredProcess]: Starting monitored process 81 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-25 17:13:26,932 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (81)] Waiting until timeout for monitored process
[2023-12-25 17:13:32,533 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 17:13:32,709 INFO  L262         TraceCheckSpWp]: Trace formula consists of 25929 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-12-25 17:13:32,768 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 17:13:32,923 INFO  L134       CoverageAnalysis]: Checked inductivity of 390 backedges. 128 proven. 0 refuted. 0 times theorem prover too weak. 262 trivial. 0 not checked.
[2023-12-25 17:13:32,923 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 17:13:32,924 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 17:13:32,924 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1625053153]
[2023-12-25 17:13:32,924 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 17:13:32,924 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1583197717]
[2023-12-25 17:13:32,924 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1583197717] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 17:13:32,924 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 17:13:32,924 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8
[2023-12-25 17:13:32,924 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1374284444]
[2023-12-25 17:13:32,924 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 17:13:32,927 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 8 states
[2023-12-25 17:13:32,927 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 17:13:32,928 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2023-12-25 17:13:32,928 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56
[2023-12-25 17:13:32,929 INFO  L87              Difference]: Start difference. First operand 7125 states and 11807 transitions. Second operand  has 8 states, 8 states have (on average 539.375) internal successors, (4315), 8 states have internal predecessors, (4315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 17:13:33,380 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 17:13:33,380 INFO  L93              Difference]: Finished difference Result 19820 states and 32831 transitions.
[2023-12-25 17:13:33,380 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. 
[2023-12-25 17:13:33,381 INFO  L78                 Accepts]: Start accepts. Automaton has  has 8 states, 8 states have (on average 539.375) internal successors, (4315), 8 states have internal predecessors, (4315), 0 states have call successors, (0), 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 4555
[2023-12-25 17:13:33,384 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 17:13:33,392 INFO  L225             Difference]: With dead ends: 19820
[2023-12-25 17:13:33,392 INFO  L226             Difference]: Without dead ends: 13286
[2023-12-25 17:13:33,395 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 4563 GetRequests, 4551 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182
[2023-12-25 17:13:33,395 INFO  L413           NwaCegarLoop]: 11253 mSDtfsCounter, 30064 mSDsluCounter, 54455 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30064 SdHoareTripleChecker+Valid, 65708 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-12-25 17:13:33,395 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [30064 Valid, 65708 Invalid, 52 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-12-25 17:13:33,401 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 13286 states.
[2023-12-25 17:13:33,452 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 13286 to 7125.
[2023-12-25 17:13:33,457 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7125 states, 7124 states have (on average 1.6573554183043233) internal successors, (11807), 7124 states have internal predecessors, (11807), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 17:13:33,464 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7125 states to 7125 states and 11807 transitions.
[2023-12-25 17:13:33,465 INFO  L78                 Accepts]: Start accepts. Automaton has 7125 states and 11807 transitions. Word has length 4555
[2023-12-25 17:13:33,466 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 17:13:33,466 INFO  L495      AbstractCegarLoop]: Abstraction has 7125 states and 11807 transitions.
[2023-12-25 17:13:33,467 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 8 states, 8 states have (on average 539.375) internal successors, (4315), 8 states have internal predecessors, (4315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 17:13:33,467 INFO  L276                IsEmpty]: Start isEmpty. Operand 7125 states and 11807 transitions.
[2023-12-25 17:13:33,571 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 4557
[2023-12-25 17:13:33,571 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 17:13:33,572 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-12-25 17:13:33,649 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (81)] Forceful destruction successful, exit code 0
[2023-12-25 17:13:33,788 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83,81 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 17:13:33,788 INFO  L420      AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 17:13:33,789 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 17:13:33,789 INFO  L85        PathProgramCache]: Analyzing trace with hash 1589343767, now seen corresponding path program 1 times
[2023-12-25 17:13:33,789 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 17:13:33,789 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [969870160]
[2023-12-25 17:13:33,790 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 17:13:33,790 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 17:13:34,115 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 17:13:34,115 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2077845711]
[2023-12-25 17:13:34,116 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 17:13:34,116 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 17:13:34,116 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 17:13:34,117 INFO  L229       MonitoredProcess]: Starting monitored process 82 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-25 17:13:34,118 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (82)] Waiting until timeout for monitored process
[2023-12-25 17:13:39,643 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 17:13:39,805 INFO  L262         TraceCheckSpWp]: Trace formula consists of 25932 conjuncts, 21 conjunts are in the unsatisfiable core
[2023-12-25 17:13:39,855 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 17:13:40,011 INFO  L134       CoverageAnalysis]: Checked inductivity of 390 backedges. 124 proven. 0 refuted. 0 times theorem prover too weak. 266 trivial. 0 not checked.
[2023-12-25 17:13:40,012 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 17:13:40,012 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 17:13:40,012 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [969870160]
[2023-12-25 17:13:40,012 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 17:13:40,012 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2077845711]
[2023-12-25 17:13:40,012 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [2077845711] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 17:13:40,012 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 17:13:40,012 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8
[2023-12-25 17:13:40,012 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1079624523]
[2023-12-25 17:13:40,012 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 17:13:40,015 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 8 states
[2023-12-25 17:13:40,015 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 17:13:40,016 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2023-12-25 17:13:40,016 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56
[2023-12-25 17:13:40,017 INFO  L87              Difference]: Start difference. First operand 7125 states and 11807 transitions. Second operand  has 8 states, 8 states have (on average 539.25) internal successors, (4314), 8 states have internal predecessors, (4314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 17:13:40,361 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 17:13:40,361 INFO  L93              Difference]: Finished difference Result 19820 states and 32831 transitions.
[2023-12-25 17:13:40,362 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. 
[2023-12-25 17:13:40,363 INFO  L78                 Accepts]: Start accepts. Automaton has  has 8 states, 8 states have (on average 539.25) internal successors, (4314), 8 states have internal predecessors, (4314), 0 states have call successors, (0), 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 4556
[2023-12-25 17:13:40,365 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 17:13:40,379 INFO  L225             Difference]: With dead ends: 19820
[2023-12-25 17:13:40,379 INFO  L226             Difference]: Without dead ends: 13292
[2023-12-25 17:13:40,386 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 4564 GetRequests, 4552 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182
[2023-12-25 17:13:40,387 INFO  L413           NwaCegarLoop]: 11263 mSDtfsCounter, 30060 mSDsluCounter, 55627 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30060 SdHoareTripleChecker+Valid, 66890 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-12-25 17:13:40,387 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [30060 Valid, 66890 Invalid, 63 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-12-25 17:13:40,398 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 13292 states.
[2023-12-25 17:13:40,470 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 13292 to 7125.
[2023-12-25 17:13:40,476 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7125 states, 7124 states have (on average 1.6573554183043233) internal successors, (11807), 7124 states have internal predecessors, (11807), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 17:13:40,484 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7125 states to 7125 states and 11807 transitions.
[2023-12-25 17:13:40,485 INFO  L78                 Accepts]: Start accepts. Automaton has 7125 states and 11807 transitions. Word has length 4556
[2023-12-25 17:13:40,487 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 17:13:40,487 INFO  L495      AbstractCegarLoop]: Abstraction has 7125 states and 11807 transitions.
[2023-12-25 17:13:40,487 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 8 states, 8 states have (on average 539.25) internal successors, (4314), 8 states have internal predecessors, (4314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 17:13:40,488 INFO  L276                IsEmpty]: Start isEmpty. Operand 7125 states and 11807 transitions.
[2023-12-25 17:13:40,594 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 4558
[2023-12-25 17:13:40,595 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 17:13:40,595 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-12-25 17:13:40,671 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (82)] Forceful destruction successful, exit code 0
[2023-12-25 17:13:40,820 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84,82 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 17:13:40,820 INFO  L420      AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 17:13:40,821 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 17:13:40,821 INFO  L85        PathProgramCache]: Analyzing trace with hash -583570747, now seen corresponding path program 1 times
[2023-12-25 17:13:40,821 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 17:13:40,821 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1908378036]
[2023-12-25 17:13:40,822 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 17:13:40,822 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 17:13:41,249 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 17:13:41,250 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [200608420]
[2023-12-25 17:13:41,251 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 17:13:41,251 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 17:13:41,251 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 17:13:41,252 INFO  L229       MonitoredProcess]: Starting monitored process 83 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-25 17:13:41,254 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (83)] Waiting until timeout for monitored process
[2023-12-25 17:13:46,587 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 17:13:46,755 INFO  L262         TraceCheckSpWp]: Trace formula consists of 25936 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-12-25 17:13:46,811 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 17:13:46,970 INFO  L134       CoverageAnalysis]: Checked inductivity of 390 backedges. 120 proven. 0 refuted. 0 times theorem prover too weak. 270 trivial. 0 not checked.
[2023-12-25 17:13:46,971 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 17:13:46,971 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 17:13:46,971 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1908378036]
[2023-12-25 17:13:46,971 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 17:13:46,971 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [200608420]
[2023-12-25 17:13:46,971 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [200608420] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 17:13:46,971 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 17:13:46,971 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8
[2023-12-25 17:13:46,971 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1300090403]
[2023-12-25 17:13:46,972 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 17:13:46,974 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 8 states
[2023-12-25 17:13:46,974 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 17:13:46,977 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2023-12-25 17:13:46,977 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56
[2023-12-25 17:13:46,977 INFO  L87              Difference]: Start difference. First operand 7125 states and 11807 transitions. Second operand  has 8 states, 8 states have (on average 539.125) internal successors, (4313), 8 states have internal predecessors, (4313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 17:13:47,299 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 17:13:47,299 INFO  L93              Difference]: Finished difference Result 19820 states and 32831 transitions.
[2023-12-25 17:13:47,299 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. 
[2023-12-25 17:13:47,300 INFO  L78                 Accepts]: Start accepts. Automaton has  has 8 states, 8 states have (on average 539.125) internal successors, (4313), 8 states have internal predecessors, (4313), 0 states have call successors, (0), 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 4557
[2023-12-25 17:13:47,303 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 17:13:47,318 INFO  L225             Difference]: With dead ends: 19820
[2023-12-25 17:13:47,318 INFO  L226             Difference]: Without dead ends: 13298
[2023-12-25 17:13:47,326 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 4565 GetRequests, 4553 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182
[2023-12-25 17:13:47,326 INFO  L413           NwaCegarLoop]: 11273 mSDtfsCounter, 30056 mSDsluCounter, 54521 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30056 SdHoareTripleChecker+Valid, 65794 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-12-25 17:13:47,326 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [30056 Valid, 65794 Invalid, 52 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-12-25 17:13:47,336 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 13298 states.
[2023-12-25 17:13:47,399 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 13298 to 7125.
[2023-12-25 17:13:47,405 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7125 states, 7124 states have (on average 1.6573554183043233) internal successors, (11807), 7124 states have internal predecessors, (11807), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 17:13:47,412 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7125 states to 7125 states and 11807 transitions.
[2023-12-25 17:13:47,412 INFO  L78                 Accepts]: Start accepts. Automaton has 7125 states and 11807 transitions. Word has length 4557
[2023-12-25 17:13:47,414 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 17:13:47,415 INFO  L495      AbstractCegarLoop]: Abstraction has 7125 states and 11807 transitions.
[2023-12-25 17:13:47,415 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 8 states, 8 states have (on average 539.125) internal successors, (4313), 8 states have internal predecessors, (4313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 17:13:47,415 INFO  L276                IsEmpty]: Start isEmpty. Operand 7125 states and 11807 transitions.
[2023-12-25 17:13:47,621 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 4559
[2023-12-25 17:13:47,621 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 17:13:47,622 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-12-25 17:13:47,701 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (83)] Ended with exit code 0
[2023-12-25 17:13:47,832 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 83 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable85
[2023-12-25 17:13:47,832 INFO  L420      AbstractCegarLoop]: === Iteration 87 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 17:13:47,833 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 17:13:47,833 INFO  L85        PathProgramCache]: Analyzing trace with hash -481882663, now seen corresponding path program 1 times
[2023-12-25 17:13:47,833 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 17:13:47,833 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2024729856]
[2023-12-25 17:13:47,834 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 17:13:47,834 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 17:13:48,159 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 17:13:48,160 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [911769296]
[2023-12-25 17:13:48,161 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 17:13:48,161 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 17:13:48,161 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 17:13:48,162 INFO  L229       MonitoredProcess]: Starting monitored process 84 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-25 17:13:48,163 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (84)] Waiting until timeout for monitored process
[2023-12-25 17:13:53,802 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 17:13:53,986 INFO  L262         TraceCheckSpWp]: Trace formula consists of 25939 conjuncts, 21 conjunts are in the unsatisfiable core
[2023-12-25 17:13:54,046 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 17:13:54,234 INFO  L134       CoverageAnalysis]: Checked inductivity of 390 backedges. 116 proven. 0 refuted. 0 times theorem prover too weak. 274 trivial. 0 not checked.
[2023-12-25 17:13:54,234 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 17:13:54,234 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 17:13:54,234 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2024729856]
[2023-12-25 17:13:54,234 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 17:13:54,234 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [911769296]
[2023-12-25 17:13:54,234 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [911769296] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 17:13:54,234 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 17:13:54,235 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8
[2023-12-25 17:13:54,235 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2078986683]
[2023-12-25 17:13:54,235 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 17:13:54,237 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 8 states
[2023-12-25 17:13:54,237 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 17:13:54,239 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2023-12-25 17:13:54,239 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56
[2023-12-25 17:13:54,239 INFO  L87              Difference]: Start difference. First operand 7125 states and 11807 transitions. Second operand  has 8 states, 8 states have (on average 539.0) internal successors, (4312), 8 states have internal predecessors, (4312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 17:13:54,695 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 17:13:54,695 INFO  L93              Difference]: Finished difference Result 19820 states and 32831 transitions.
[2023-12-25 17:13:54,695 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. 
[2023-12-25 17:13:54,696 INFO  L78                 Accepts]: Start accepts. Automaton has  has 8 states, 8 states have (on average 539.0) internal successors, (4312), 8 states have internal predecessors, (4312), 0 states have call successors, (0), 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 4558
[2023-12-25 17:13:54,699 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 17:13:54,709 INFO  L225             Difference]: With dead ends: 19820
[2023-12-25 17:13:54,709 INFO  L226             Difference]: Without dead ends: 13304
[2023-12-25 17:13:54,714 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 4566 GetRequests, 4554 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182
[2023-12-25 17:13:54,714 INFO  L413           NwaCegarLoop]: 11283 mSDtfsCounter, 30052 mSDsluCounter, 54554 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30052 SdHoareTripleChecker+Valid, 65837 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-12-25 17:13:54,714 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [30052 Valid, 65837 Invalid, 52 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [1 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-12-25 17:13:54,725 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 13304 states.
[2023-12-25 17:13:54,792 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 13304 to 7125.
[2023-12-25 17:13:54,799 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7125 states, 7124 states have (on average 1.6573554183043233) internal successors, (11807), 7124 states have internal predecessors, (11807), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 17:13:54,807 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7125 states to 7125 states and 11807 transitions.
[2023-12-25 17:13:54,807 INFO  L78                 Accepts]: Start accepts. Automaton has 7125 states and 11807 transitions. Word has length 4558
[2023-12-25 17:13:54,809 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 17:13:54,809 INFO  L495      AbstractCegarLoop]: Abstraction has 7125 states and 11807 transitions.
[2023-12-25 17:13:54,810 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 8 states, 8 states have (on average 539.0) internal successors, (4312), 8 states have internal predecessors, (4312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 17:13:54,810 INFO  L276                IsEmpty]: Start isEmpty. Operand 7125 states and 11807 transitions.
[2023-12-25 17:13:54,915 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 4560
[2023-12-25 17:13:54,915 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 17:13:54,916 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-12-25 17:13:55,000 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (84)] Forceful destruction successful, exit code 0
[2023-12-25 17:13:55,140 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86,84 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 17:13:55,140 INFO  L420      AbstractCegarLoop]: === Iteration 88 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 17:13:55,141 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 17:13:55,141 INFO  L85        PathProgramCache]: Analyzing trace with hash 1207138499, now seen corresponding path program 1 times
[2023-12-25 17:13:55,141 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 17:13:55,141 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1404011671]
[2023-12-25 17:13:55,141 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 17:13:55,142 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 17:13:55,472 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 17:13:55,472 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [215393821]
[2023-12-25 17:13:55,473 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 17:13:55,473 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 17:13:55,473 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 17:13:55,475 INFO  L229       MonitoredProcess]: Starting monitored process 85 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-25 17:13:55,475 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (85)] Waiting until timeout for monitored process
[2023-12-25 17:14:01,287 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 17:14:01,455 INFO  L262         TraceCheckSpWp]: Trace formula consists of 25943 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-12-25 17:14:01,511 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 17:14:01,860 INFO  L134       CoverageAnalysis]: Checked inductivity of 390 backedges. 112 proven. 0 refuted. 0 times theorem prover too weak. 278 trivial. 0 not checked.
[2023-12-25 17:14:01,861 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 17:14:01,861 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 17:14:01,861 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1404011671]
[2023-12-25 17:14:01,861 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 17:14:01,861 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [215393821]
[2023-12-25 17:14:01,861 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [215393821] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 17:14:01,861 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 17:14:01,861 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8
[2023-12-25 17:14:01,861 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [245674969]
[2023-12-25 17:14:01,861 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 17:14:01,864 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 8 states
[2023-12-25 17:14:01,864 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 17:14:01,865 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2023-12-25 17:14:01,865 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56
[2023-12-25 17:14:01,866 INFO  L87              Difference]: Start difference. First operand 7125 states and 11807 transitions. Second operand  has 8 states, 8 states have (on average 538.875) internal successors, (4311), 8 states have internal predecessors, (4311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 17:14:02,207 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 17:14:02,208 INFO  L93              Difference]: Finished difference Result 19820 states and 32831 transitions.
[2023-12-25 17:14:02,208 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. 
[2023-12-25 17:14:02,209 INFO  L78                 Accepts]: Start accepts. Automaton has  has 8 states, 8 states have (on average 538.875) internal successors, (4311), 8 states have internal predecessors, (4311), 0 states have call successors, (0), 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 4559
[2023-12-25 17:14:02,212 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 17:14:02,224 INFO  L225             Difference]: With dead ends: 19820
[2023-12-25 17:14:02,225 INFO  L226             Difference]: Without dead ends: 13310
[2023-12-25 17:14:02,232 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 4567 GetRequests, 4555 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182
[2023-12-25 17:14:02,232 INFO  L413           NwaCegarLoop]: 11293 mSDtfsCounter, 30048 mSDsluCounter, 54587 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30048 SdHoareTripleChecker+Valid, 65880 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-12-25 17:14:02,232 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [30048 Valid, 65880 Invalid, 52 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-12-25 17:14:02,244 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 13310 states.
[2023-12-25 17:14:02,309 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 13310 to 7125.
[2023-12-25 17:14:02,315 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7125 states, 7124 states have (on average 1.6573554183043233) internal successors, (11807), 7124 states have internal predecessors, (11807), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 17:14:02,322 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7125 states to 7125 states and 11807 transitions.
[2023-12-25 17:14:02,322 INFO  L78                 Accepts]: Start accepts. Automaton has 7125 states and 11807 transitions. Word has length 4559
[2023-12-25 17:14:02,324 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 17:14:02,324 INFO  L495      AbstractCegarLoop]: Abstraction has 7125 states and 11807 transitions.
[2023-12-25 17:14:02,325 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 8 states, 8 states have (on average 538.875) internal successors, (4311), 8 states have internal predecessors, (4311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 17:14:02,325 INFO  L276                IsEmpty]: Start isEmpty. Operand 7125 states and 11807 transitions.
[2023-12-25 17:14:02,429 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 4561
[2023-12-25 17:14:02,430 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 17:14:02,431 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-12-25 17:14:02,513 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (85)] Forceful destruction successful, exit code 0
[2023-12-25 17:14:02,656 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87,85 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 17:14:02,656 INFO  L420      AbstractCegarLoop]: === Iteration 89 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 17:14:02,656 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 17:14:02,657 INFO  L85        PathProgramCache]: Analyzing trace with hash 169453467, now seen corresponding path program 1 times
[2023-12-25 17:14:02,657 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 17:14:02,657 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1670993439]
[2023-12-25 17:14:02,657 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 17:14:02,658 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 17:14:03,000 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 17:14:03,000 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [752294756]
[2023-12-25 17:14:03,001 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 17:14:03,001 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 17:14:03,001 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 17:14:03,022 INFO  L229       MonitoredProcess]: Starting monitored process 86 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-25 17:14:03,037 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (86)] Waiting until timeout for monitored process
[2023-12-25 17:14:09,020 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 17:14:09,186 INFO  L262         TraceCheckSpWp]: Trace formula consists of 25946 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-12-25 17:14:09,239 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 17:14:09,400 INFO  L134       CoverageAnalysis]: Checked inductivity of 390 backedges. 108 proven. 0 refuted. 0 times theorem prover too weak. 282 trivial. 0 not checked.
[2023-12-25 17:14:09,400 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 17:14:09,400 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 17:14:09,400 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1670993439]
[2023-12-25 17:14:09,401 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 17:14:09,401 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [752294756]
[2023-12-25 17:14:09,401 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [752294756] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 17:14:09,401 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 17:14:09,401 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8
[2023-12-25 17:14:09,401 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1053532617]
[2023-12-25 17:14:09,401 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 17:14:09,418 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 8 states
[2023-12-25 17:14:09,418 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 17:14:09,420 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2023-12-25 17:14:09,420 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56
[2023-12-25 17:14:09,420 INFO  L87              Difference]: Start difference. First operand 7125 states and 11807 transitions. Second operand  has 8 states, 8 states have (on average 538.75) internal successors, (4310), 8 states have internal predecessors, (4310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 17:14:09,756 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 17:14:09,757 INFO  L93              Difference]: Finished difference Result 19820 states and 32831 transitions.
[2023-12-25 17:14:09,757 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. 
[2023-12-25 17:14:09,758 INFO  L78                 Accepts]: Start accepts. Automaton has  has 8 states, 8 states have (on average 538.75) internal successors, (4310), 8 states have internal predecessors, (4310), 0 states have call successors, (0), 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 4560
[2023-12-25 17:14:09,760 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 17:14:09,772 INFO  L225             Difference]: With dead ends: 19820
[2023-12-25 17:14:09,772 INFO  L226             Difference]: Without dead ends: 13316
[2023-12-25 17:14:09,779 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 4568 GetRequests, 4556 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182
[2023-12-25 17:14:09,779 INFO  L413           NwaCegarLoop]: 11303 mSDtfsCounter, 30044 mSDsluCounter, 55787 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30044 SdHoareTripleChecker+Valid, 67090 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-12-25 17:14:09,779 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [30044 Valid, 67090 Invalid, 63 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-12-25 17:14:09,788 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 13316 states.
[2023-12-25 17:14:09,849 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 13316 to 7125.
[2023-12-25 17:14:09,854 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7125 states, 7124 states have (on average 1.6573554183043233) internal successors, (11807), 7124 states have internal predecessors, (11807), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 17:14:09,860 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7125 states to 7125 states and 11807 transitions.
[2023-12-25 17:14:09,861 INFO  L78                 Accepts]: Start accepts. Automaton has 7125 states and 11807 transitions. Word has length 4560
[2023-12-25 17:14:09,862 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 17:14:09,862 INFO  L495      AbstractCegarLoop]: Abstraction has 7125 states and 11807 transitions.
[2023-12-25 17:14:09,863 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 8 states, 8 states have (on average 538.75) internal successors, (4310), 8 states have internal predecessors, (4310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 17:14:09,863 INFO  L276                IsEmpty]: Start isEmpty. Operand 7125 states and 11807 transitions.
[2023-12-25 17:14:09,968 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 4562
[2023-12-25 17:14:09,968 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 17:14:09,969 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-12-25 17:14:10,047 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (86)] Forceful destruction successful, exit code 0
[2023-12-25 17:14:10,172 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 86 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable88
[2023-12-25 17:14:10,172 INFO  L420      AbstractCegarLoop]: === Iteration 90 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 17:14:10,173 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 17:14:10,173 INFO  L85        PathProgramCache]: Analyzing trace with hash 1027318977, now seen corresponding path program 1 times
[2023-12-25 17:14:10,173 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 17:14:10,173 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1568396762]
[2023-12-25 17:14:10,174 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 17:14:10,174 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 17:14:10,629 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 17:14:10,629 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [515865445]
[2023-12-25 17:14:10,630 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 17:14:10,630 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 17:14:10,630 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 17:14:10,631 INFO  L229       MonitoredProcess]: Starting monitored process 87 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-25 17:14:10,633 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (87)] Waiting until timeout for monitored process
[2023-12-25 17:14:16,421 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 17:14:16,601 INFO  L262         TraceCheckSpWp]: Trace formula consists of 25950 conjuncts, 21 conjunts are in the unsatisfiable core
[2023-12-25 17:14:16,659 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 17:14:16,983 INFO  L134       CoverageAnalysis]: Checked inductivity of 390 backedges. 104 proven. 0 refuted. 0 times theorem prover too weak. 286 trivial. 0 not checked.
[2023-12-25 17:14:16,983 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 17:14:16,983 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 17:14:16,984 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1568396762]
[2023-12-25 17:14:16,984 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 17:14:16,984 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [515865445]
[2023-12-25 17:14:16,984 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [515865445] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 17:14:16,984 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 17:14:16,984 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8
[2023-12-25 17:14:16,984 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [366480715]
[2023-12-25 17:14:16,984 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 17:14:16,986 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 8 states
[2023-12-25 17:14:16,986 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 17:14:16,988 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2023-12-25 17:14:16,988 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56
[2023-12-25 17:14:16,988 INFO  L87              Difference]: Start difference. First operand 7125 states and 11807 transitions. Second operand  has 8 states, 8 states have (on average 538.625) internal successors, (4309), 8 states have internal predecessors, (4309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 17:14:17,329 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 17:14:17,329 INFO  L93              Difference]: Finished difference Result 19820 states and 32831 transitions.
[2023-12-25 17:14:17,330 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. 
[2023-12-25 17:14:17,331 INFO  L78                 Accepts]: Start accepts. Automaton has  has 8 states, 8 states have (on average 538.625) internal successors, (4309), 8 states have internal predecessors, (4309), 0 states have call successors, (0), 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 4561
[2023-12-25 17:14:17,333 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 17:14:17,345 INFO  L225             Difference]: With dead ends: 19820
[2023-12-25 17:14:17,345 INFO  L226             Difference]: Without dead ends: 13322
[2023-12-25 17:14:17,352 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 4569 GetRequests, 4557 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182
[2023-12-25 17:14:17,353 INFO  L413           NwaCegarLoop]: 11313 mSDtfsCounter, 30040 mSDsluCounter, 55827 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30040 SdHoareTripleChecker+Valid, 67140 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-12-25 17:14:17,353 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [30040 Valid, 67140 Invalid, 63 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-12-25 17:14:17,361 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 13322 states.
[2023-12-25 17:14:17,423 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 13322 to 7125.
[2023-12-25 17:14:17,428 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7125 states, 7124 states have (on average 1.6573554183043233) internal successors, (11807), 7124 states have internal predecessors, (11807), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 17:14:17,435 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7125 states to 7125 states and 11807 transitions.
[2023-12-25 17:14:17,435 INFO  L78                 Accepts]: Start accepts. Automaton has 7125 states and 11807 transitions. Word has length 4561
[2023-12-25 17:14:17,437 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 17:14:17,437 INFO  L495      AbstractCegarLoop]: Abstraction has 7125 states and 11807 transitions.
[2023-12-25 17:14:17,438 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 8 states, 8 states have (on average 538.625) internal successors, (4309), 8 states have internal predecessors, (4309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 17:14:17,438 INFO  L276                IsEmpty]: Start isEmpty. Operand 7125 states and 11807 transitions.
[2023-12-25 17:14:17,541 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 4563
[2023-12-25 17:14:17,542 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 17:14:17,543 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-12-25 17:14:17,622 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (87)] Ended with exit code 0
[2023-12-25 17:14:17,764 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89,87 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 17:14:17,764 INFO  L420      AbstractCegarLoop]: === Iteration 91 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 17:14:17,765 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 17:14:17,765 INFO  L85        PathProgramCache]: Analyzing trace with hash -815406243, now seen corresponding path program 1 times
[2023-12-25 17:14:17,765 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 17:14:17,765 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1823997414]
[2023-12-25 17:14:17,765 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 17:14:17,766 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 17:14:18,166 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 17:14:18,166 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [296595990]
[2023-12-25 17:14:18,167 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 17:14:18,167 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 17:14:18,167 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 17:14:18,168 INFO  L229       MonitoredProcess]: Starting monitored process 88 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-25 17:14:18,169 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (88)] Waiting until timeout for monitored process
[2023-12-25 17:14:23,819 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 17:14:23,979 INFO  L262         TraceCheckSpWp]: Trace formula consists of 25953 conjuncts, 21 conjunts are in the unsatisfiable core
[2023-12-25 17:14:24,033 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 17:14:24,219 INFO  L134       CoverageAnalysis]: Checked inductivity of 390 backedges. 100 proven. 0 refuted. 0 times theorem prover too weak. 290 trivial. 0 not checked.
[2023-12-25 17:14:24,219 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 17:14:24,219 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 17:14:24,219 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1823997414]
[2023-12-25 17:14:24,219 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 17:14:24,219 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [296595990]
[2023-12-25 17:14:24,219 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [296595990] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 17:14:24,219 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 17:14:24,219 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8
[2023-12-25 17:14:24,219 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [490757981]
[2023-12-25 17:14:24,220 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 17:14:24,222 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 8 states
[2023-12-25 17:14:24,222 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 17:14:24,223 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2023-12-25 17:14:24,223 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56
[2023-12-25 17:14:24,224 INFO  L87              Difference]: Start difference. First operand 7125 states and 11807 transitions. Second operand  has 8 states, 8 states have (on average 538.5) internal successors, (4308), 8 states have internal predecessors, (4308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 17:14:24,675 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 17:14:24,675 INFO  L93              Difference]: Finished difference Result 19820 states and 32831 transitions.
[2023-12-25 17:14:24,675 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. 
[2023-12-25 17:14:24,676 INFO  L78                 Accepts]: Start accepts. Automaton has  has 8 states, 8 states have (on average 538.5) internal successors, (4308), 8 states have internal predecessors, (4308), 0 states have call successors, (0), 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 4562
[2023-12-25 17:14:24,678 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 17:14:24,688 INFO  L225             Difference]: With dead ends: 19820
[2023-12-25 17:14:24,688 INFO  L226             Difference]: Without dead ends: 13328
[2023-12-25 17:14:24,693 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 4570 GetRequests, 4558 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182
[2023-12-25 17:14:24,693 INFO  L413           NwaCegarLoop]: 11323 mSDtfsCounter, 30036 mSDsluCounter, 54686 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30036 SdHoareTripleChecker+Valid, 66009 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-12-25 17:14:24,693 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [30036 Valid, 66009 Invalid, 52 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-12-25 17:14:24,701 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 13328 states.
[2023-12-25 17:14:24,756 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 13328 to 7125.
[2023-12-25 17:14:24,761 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7125 states, 7124 states have (on average 1.6573554183043233) internal successors, (11807), 7124 states have internal predecessors, (11807), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 17:14:24,768 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7125 states to 7125 states and 11807 transitions.
[2023-12-25 17:14:24,768 INFO  L78                 Accepts]: Start accepts. Automaton has 7125 states and 11807 transitions. Word has length 4562
[2023-12-25 17:14:24,770 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 17:14:24,770 INFO  L495      AbstractCegarLoop]: Abstraction has 7125 states and 11807 transitions.
[2023-12-25 17:14:24,771 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 8 states, 8 states have (on average 538.5) internal successors, (4308), 8 states have internal predecessors, (4308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 17:14:24,771 INFO  L276                IsEmpty]: Start isEmpty. Operand 7125 states and 11807 transitions.
[2023-12-25 17:14:24,876 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 4564
[2023-12-25 17:14:24,876 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 17:14:24,877 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-12-25 17:14:24,953 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (88)] Forceful destruction successful, exit code 0
[2023-12-25 17:14:25,104 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90,88 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 17:14:25,104 INFO  L420      AbstractCegarLoop]: === Iteration 92 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 17:14:25,105 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 17:14:25,105 INFO  L85        PathProgramCache]: Analyzing trace with hash 793333439, now seen corresponding path program 1 times
[2023-12-25 17:14:25,105 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 17:14:25,105 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1203754525]
[2023-12-25 17:14:25,105 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 17:14:25,106 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 17:14:25,453 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 17:14:25,454 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1277323786]
[2023-12-25 17:14:25,455 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 17:14:25,455 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 17:14:25,455 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 17:14:25,456 INFO  L229       MonitoredProcess]: Starting monitored process 89 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-25 17:14:25,460 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (89)] Waiting until timeout for monitored process
[2023-12-25 17:14:31,431 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 17:14:31,591 INFO  L262         TraceCheckSpWp]: Trace formula consists of 25957 conjuncts, 21 conjunts are in the unsatisfiable core
[2023-12-25 17:14:31,641 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 17:14:31,830 INFO  L134       CoverageAnalysis]: Checked inductivity of 390 backedges. 96 proven. 0 refuted. 0 times theorem prover too weak. 294 trivial. 0 not checked.
[2023-12-25 17:14:31,830 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 17:14:31,830 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 17:14:31,830 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1203754525]
[2023-12-25 17:14:31,830 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 17:14:31,830 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1277323786]
[2023-12-25 17:14:31,830 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1277323786] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 17:14:31,830 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 17:14:31,831 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8
[2023-12-25 17:14:31,831 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1922200174]
[2023-12-25 17:14:31,831 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 17:14:31,833 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 8 states
[2023-12-25 17:14:31,833 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 17:14:31,835 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2023-12-25 17:14:31,835 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56
[2023-12-25 17:14:31,835 INFO  L87              Difference]: Start difference. First operand 7125 states and 11807 transitions. Second operand  has 8 states, 8 states have (on average 538.375) internal successors, (4307), 8 states have internal predecessors, (4307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 17:14:32,169 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 17:14:32,169 INFO  L93              Difference]: Finished difference Result 19820 states and 32831 transitions.
[2023-12-25 17:14:32,169 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. 
[2023-12-25 17:14:32,170 INFO  L78                 Accepts]: Start accepts. Automaton has  has 8 states, 8 states have (on average 538.375) internal successors, (4307), 8 states have internal predecessors, (4307), 0 states have call successors, (0), 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 4563
[2023-12-25 17:14:32,173 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 17:14:32,185 INFO  L225             Difference]: With dead ends: 19820
[2023-12-25 17:14:32,185 INFO  L226             Difference]: Without dead ends: 13334
[2023-12-25 17:14:32,193 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 4571 GetRequests, 4559 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182
[2023-12-25 17:14:32,193 INFO  L413           NwaCegarLoop]: 11333 mSDtfsCounter, 30032 mSDsluCounter, 54719 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30032 SdHoareTripleChecker+Valid, 66052 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-12-25 17:14:32,193 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [30032 Valid, 66052 Invalid, 52 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-12-25 17:14:32,202 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 13334 states.
[2023-12-25 17:14:32,261 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 13334 to 7125.
[2023-12-25 17:14:32,267 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7125 states, 7124 states have (on average 1.6573554183043233) internal successors, (11807), 7124 states have internal predecessors, (11807), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 17:14:32,273 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7125 states to 7125 states and 11807 transitions.
[2023-12-25 17:14:32,274 INFO  L78                 Accepts]: Start accepts. Automaton has 7125 states and 11807 transitions. Word has length 4563
[2023-12-25 17:14:32,276 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 17:14:32,276 INFO  L495      AbstractCegarLoop]: Abstraction has 7125 states and 11807 transitions.
[2023-12-25 17:14:32,276 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 8 states, 8 states have (on average 538.375) internal successors, (4307), 8 states have internal predecessors, (4307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 17:14:32,276 INFO  L276                IsEmpty]: Start isEmpty. Operand 7125 states and 11807 transitions.
[2023-12-25 17:14:32,465 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 4565
[2023-12-25 17:14:32,465 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 17:14:32,466 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 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[2023-12-25 17:14:32,542 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (89)] Forceful destruction successful, exit code 0
[2023-12-25 17:14:32,680 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91,89 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 17:14:32,680 INFO  L420      AbstractCegarLoop]: === Iteration 93 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 17:14:32,680 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 17:14:32,681 INFO  L85        PathProgramCache]: Analyzing trace with hash 580804895, now seen corresponding path program 1 times
[2023-12-25 17:14:32,681 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 17:14:32,681 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [890561686]
[2023-12-25 17:14:32,681 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 17:14:32,681 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 17:14:33,009 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 17:14:33,009 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1402703835]
[2023-12-25 17:14:33,010 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 17:14:33,010 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 17:14:33,010 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 17:14:33,011 INFO  L229       MonitoredProcess]: Starting monitored process 90 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-25 17:14:33,012 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (90)] Waiting until timeout for monitored process
[2023-12-25 17:14:38,729 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 17:14:38,892 INFO  L262         TraceCheckSpWp]: Trace formula consists of 25960 conjuncts, 17 conjunts are in the unsatisfiable core
[2023-12-25 17:14:38,948 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 17:14:39,128 INFO  L134       CoverageAnalysis]: Checked inductivity of 390 backedges. 92 proven. 0 refuted. 0 times theorem prover too weak. 298 trivial. 0 not checked.
[2023-12-25 17:14:39,129 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 17:14:39,129 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 17:14:39,129 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [890561686]
[2023-12-25 17:14:39,129 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 17:14:39,129 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1402703835]
[2023-12-25 17:14:39,129 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1402703835] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 17:14:39,129 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 17:14:39,129 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-12-25 17:14:39,129 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [466149206]
[2023-12-25 17:14:39,129 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 17:14:39,131 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-12-25 17:14:39,132 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 17:14:39,133 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-12-25 17:14:39,133 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-12-25 17:14:39,134 INFO  L87              Difference]: Start difference. First operand 7125 states and 11807 transitions. Second operand  has 7 states, 7 states have (on average 615.1428571428571) internal successors, (4306), 7 states have internal predecessors, (4306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 17:14:39,527 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 17:14:39,527 INFO  L93              Difference]: Finished difference Result 19820 states and 32831 transitions.
[2023-12-25 17:14:39,527 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. 
[2023-12-25 17:14:39,528 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 615.1428571428571) internal successors, (4306), 7 states have internal predecessors, (4306), 0 states have call successors, (0), 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 4564
[2023-12-25 17:14:39,530 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 17:14:39,541 INFO  L225             Difference]: With dead ends: 19820
[2023-12-25 17:14:39,541 INFO  L226             Difference]: Without dead ends: 13340
[2023-12-25 17:14:39,546 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 4572 GetRequests, 4561 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156
[2023-12-25 17:14:39,547 INFO  L413           NwaCegarLoop]: 11343 mSDtfsCounter, 30028 mSDsluCounter, 44613 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30028 SdHoareTripleChecker+Valid, 55956 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-12-25 17:14:39,547 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [30028 Valid, 55956 Invalid, 47 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-12-25 17:14:39,554 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 13340 states.
[2023-12-25 17:14:39,613 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 13340 to 7125.
[2023-12-25 17:14:39,619 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7125 states, 7124 states have (on average 1.6573554183043233) internal successors, (11807), 7124 states have internal predecessors, (11807), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 17:14:39,625 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7125 states to 7125 states and 11807 transitions.
[2023-12-25 17:14:39,625 INFO  L78                 Accepts]: Start accepts. Automaton has 7125 states and 11807 transitions. Word has length 4564
[2023-12-25 17:14:39,627 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 17:14:39,627 INFO  L495      AbstractCegarLoop]: Abstraction has 7125 states and 11807 transitions.
[2023-12-25 17:14:39,628 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 615.1428571428571) internal successors, (4306), 7 states have internal predecessors, (4306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 17:14:39,628 INFO  L276                IsEmpty]: Start isEmpty. Operand 7125 states and 11807 transitions.
[2023-12-25 17:14:39,732 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 4566
[2023-12-25 17:14:39,732 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 17:14:39,733 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 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[2023-12-25 17:14:39,808 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (90)] Forceful destruction successful, exit code 0
[2023-12-25 17:14:39,956 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 90 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable92
[2023-12-25 17:14:39,956 INFO  L420      AbstractCegarLoop]: === Iteration 94 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 17:14:39,956 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 17:14:39,957 INFO  L85        PathProgramCache]: Analyzing trace with hash -1021978947, now seen corresponding path program 1 times
[2023-12-25 17:14:39,957 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 17:14:39,957 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1459193169]
[2023-12-25 17:14:39,957 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 17:14:39,957 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 17:14:40,291 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 17:14:40,292 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [540926158]
[2023-12-25 17:14:40,293 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 17:14:40,293 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 17:14:40,293 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 17:14:40,294 INFO  L229       MonitoredProcess]: Starting monitored process 91 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-25 17:14:40,295 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (91)] Waiting until timeout for monitored process
[2023-12-25 17:14:46,084 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 17:14:46,258 INFO  L262         TraceCheckSpWp]: Trace formula consists of 25964 conjuncts, 21 conjunts are in the unsatisfiable core
[2023-12-25 17:14:46,311 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 17:14:46,470 INFO  L134       CoverageAnalysis]: Checked inductivity of 390 backedges. 88 proven. 0 refuted. 0 times theorem prover too weak. 302 trivial. 0 not checked.
[2023-12-25 17:14:46,470 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 17:14:46,470 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 17:14:46,470 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1459193169]
[2023-12-25 17:14:46,470 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 17:14:46,470 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [540926158]
[2023-12-25 17:14:46,471 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [540926158] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 17:14:46,471 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 17:14:46,471 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8
[2023-12-25 17:14:46,471 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1185234768]
[2023-12-25 17:14:46,471 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 17:14:46,473 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 8 states
[2023-12-25 17:14:46,473 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 17:14:46,475 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2023-12-25 17:14:46,475 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56
[2023-12-25 17:14:46,476 INFO  L87              Difference]: Start difference. First operand 7125 states and 11807 transitions. Second operand  has 8 states, 8 states have (on average 538.125) internal successors, (4305), 8 states have internal predecessors, (4305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 17:14:46,811 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 17:14:46,811 INFO  L93              Difference]: Finished difference Result 19820 states and 32831 transitions.
[2023-12-25 17:14:46,811 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. 
[2023-12-25 17:14:46,812 INFO  L78                 Accepts]: Start accepts. Automaton has  has 8 states, 8 states have (on average 538.125) internal successors, (4305), 8 states have internal predecessors, (4305), 0 states have call successors, (0), 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 4565
[2023-12-25 17:14:46,815 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 17:14:46,828 INFO  L225             Difference]: With dead ends: 19820
[2023-12-25 17:14:46,828 INFO  L226             Difference]: Without dead ends: 13346
[2023-12-25 17:14:46,835 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 4573 GetRequests, 4561 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182
[2023-12-25 17:14:46,835 INFO  L413           NwaCegarLoop]: 11353 mSDtfsCounter, 30024 mSDsluCounter, 54785 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30024 SdHoareTripleChecker+Valid, 66138 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-12-25 17:14:46,835 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [30024 Valid, 66138 Invalid, 52 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-12-25 17:14:46,844 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 13346 states.
[2023-12-25 17:14:46,909 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 13346 to 7125.
[2023-12-25 17:14:46,915 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7125 states, 7124 states have (on average 1.6573554183043233) internal successors, (11807), 7124 states have internal predecessors, (11807), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 17:14:46,921 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7125 states to 7125 states and 11807 transitions.
[2023-12-25 17:14:46,922 INFO  L78                 Accepts]: Start accepts. Automaton has 7125 states and 11807 transitions. Word has length 4565
[2023-12-25 17:14:46,923 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 17:14:46,924 INFO  L495      AbstractCegarLoop]: Abstraction has 7125 states and 11807 transitions.
[2023-12-25 17:14:46,924 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 8 states, 8 states have (on average 538.125) internal successors, (4305), 8 states have internal predecessors, (4305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 17:14:46,924 INFO  L276                IsEmpty]: Start isEmpty. Operand 7125 states and 11807 transitions.
[2023-12-25 17:14:47,029 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 4567
[2023-12-25 17:14:47,029 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 17:14:47,030 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 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[2023-12-25 17:14:47,111 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (91)] Ended with exit code 0
[2023-12-25 17:14:47,256 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93,91 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 17:14:47,256 INFO  L420      AbstractCegarLoop]: === Iteration 95 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 17:14:47,257 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 17:14:47,257 INFO  L85        PathProgramCache]: Analyzing trace with hash 947241185, now seen corresponding path program 1 times
[2023-12-25 17:14:47,257 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 17:14:47,257 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [597089790]
[2023-12-25 17:14:47,257 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 17:14:47,257 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 17:14:47,682 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 17:14:47,682 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1799290614]
[2023-12-25 17:14:47,683 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 17:14:47,683 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 17:14:47,683 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 17:14:47,684 INFO  L229       MonitoredProcess]: Starting monitored process 92 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-25 17:14:47,685 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (92)] Waiting until timeout for monitored process
[2023-12-25 17:14:53,705 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 17:14:53,875 INFO  L262         TraceCheckSpWp]: Trace formula consists of 25967 conjuncts, 10 conjunts are in the unsatisfiable core
[2023-12-25 17:14:53,929 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 17:14:53,985 INFO  L134       CoverageAnalysis]: Checked inductivity of 390 backedges. 390 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-25 17:14:53,985 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 17:14:53,986 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 17:14:53,986 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [597089790]
[2023-12-25 17:14:53,986 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 17:14:53,986 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1799290614]
[2023-12-25 17:14:53,986 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1799290614] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 17:14:53,986 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 17:14:53,986 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2023-12-25 17:14:53,986 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [884788447]
[2023-12-25 17:14:53,986 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 17:14:53,988 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2023-12-25 17:14:53,988 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 17:14:53,990 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2023-12-25 17:14:53,990 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30
[2023-12-25 17:14:53,991 INFO  L87              Difference]: Start difference. First operand 7125 states and 11807 transitions. Second operand  has 6 states, 6 states have (on average 761.0) internal successors, (4566), 6 states have internal predecessors, (4566), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 17:14:54,251 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 17:14:54,251 INFO  L93              Difference]: Finished difference Result 19830 states and 32844 transitions.
[2023-12-25 17:14:54,252 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. 
[2023-12-25 17:14:54,253 INFO  L78                 Accepts]: Start accepts. Automaton has  has 6 states, 6 states have (on average 761.0) internal successors, (4566), 6 states have internal predecessors, (4566), 0 states have call successors, (0), 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 4566
[2023-12-25 17:14:54,253 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 17:14:54,267 INFO  L225             Difference]: With dead ends: 19830
[2023-12-25 17:14:54,267 INFO  L226             Difference]: Without dead ends: 13477
[2023-12-25 17:14:54,274 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 4568 GetRequests, 4562 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 17:14:54,275 INFO  L413           NwaCegarLoop]: 11617 mSDtfsCounter, 10274 mSDsluCounter, 45422 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10274 SdHoareTripleChecker+Valid, 57039 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 17:14:54,275 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [10274 Valid, 57039 Invalid, 64 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-12-25 17:14:54,284 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 13477 states.
[2023-12-25 17:14:54,451 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 13477 to 7130.
[2023-12-25 17:14:54,456 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7130 states, 7129 states have (on average 1.6568943750876701) internal successors, (11812), 7129 states have internal predecessors, (11812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 17:14:54,463 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7130 states to 7130 states and 11812 transitions.
[2023-12-25 17:14:54,463 INFO  L78                 Accepts]: Start accepts. Automaton has 7130 states and 11812 transitions. Word has length 4566
[2023-12-25 17:14:54,464 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 17:14:54,464 INFO  L495      AbstractCegarLoop]: Abstraction has 7130 states and 11812 transitions.
[2023-12-25 17:14:54,465 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 6 states, 6 states have (on average 761.0) internal successors, (4566), 6 states have internal predecessors, (4566), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 17:14:54,465 INFO  L276                IsEmpty]: Start isEmpty. Operand 7130 states and 11812 transitions.
[2023-12-25 17:14:54,569 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 4567
[2023-12-25 17:14:54,569 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 17:14:54,570 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 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[2023-12-25 17:14:54,663 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (92)] Forceful destruction successful, exit code 0
[2023-12-25 17:14:54,792 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94,92 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 17:14:54,792 INFO  L420      AbstractCegarLoop]: === Iteration 96 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 17:14:54,793 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 17:14:54,793 INFO  L85        PathProgramCache]: Analyzing trace with hash 728168031, now seen corresponding path program 1 times
[2023-12-25 17:14:54,793 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 17:14:54,793 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1549858998]
[2023-12-25 17:14:54,793 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 17:14:54,793 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 17:14:55,130 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 17:14:55,130 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1723205522]
[2023-12-25 17:14:55,131 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 17:14:55,131 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 17:14:55,131 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 17:14:55,132 INFO  L229       MonitoredProcess]: Starting monitored process 93 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-25 17:14:55,132 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (93)] Waiting until timeout for monitored process
[2023-12-25 17:15:01,145 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 17:15:01,304 INFO  L262         TraceCheckSpWp]: Trace formula consists of 25967 conjuncts, 10 conjunts are in the unsatisfiable core
[2023-12-25 17:15:01,353 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 17:15:01,421 INFO  L134       CoverageAnalysis]: Checked inductivity of 390 backedges. 390 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-25 17:15:01,421 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 17:15:01,421 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 17:15:01,421 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1549858998]
[2023-12-25 17:15:01,421 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 17:15:01,421 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1723205522]
[2023-12-25 17:15:01,421 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1723205522] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 17:15:01,421 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 17:15:01,422 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2023-12-25 17:15:01,422 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2108947603]
[2023-12-25 17:15:01,422 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 17:15:01,424 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2023-12-25 17:15:01,424 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 17:15:01,425 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2023-12-25 17:15:01,425 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30
[2023-12-25 17:15:01,426 INFO  L87              Difference]: Start difference. First operand 7130 states and 11812 transitions. Second operand  has 6 states, 6 states have (on average 761.0) internal successors, (4566), 6 states have internal predecessors, (4566), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 17:15:01,680 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 17:15:01,680 INFO  L93              Difference]: Finished difference Result 19844 states and 32858 transitions.
[2023-12-25 17:15:01,680 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. 
[2023-12-25 17:15:01,681 INFO  L78                 Accepts]: Start accepts. Automaton has  has 6 states, 6 states have (on average 761.0) internal successors, (4566), 6 states have internal predecessors, (4566), 0 states have call successors, (0), 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 4566
[2023-12-25 17:15:01,682 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 17:15:01,693 INFO  L225             Difference]: With dead ends: 19844
[2023-12-25 17:15:01,693 INFO  L226             Difference]: Without dead ends: 13486
[2023-12-25 17:15:01,700 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 4568 GetRequests, 4562 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 17:15:01,701 INFO  L413           NwaCegarLoop]: 11775 mSDtfsCounter, 10274 mSDsluCounter, 45896 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10274 SdHoareTripleChecker+Valid, 57671 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 17:15:01,701 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [10274 Valid, 57671 Invalid, 64 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-12-25 17:15:01,710 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 13486 states.
[2023-12-25 17:15:01,773 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 13486 to 7135.
[2023-12-25 17:15:01,778 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7135 states, 7134 states have (on average 1.6564339781328847) internal successors, (11817), 7134 states have internal predecessors, (11817), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 17:15:01,784 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7135 states to 7135 states and 11817 transitions.
[2023-12-25 17:15:01,785 INFO  L78                 Accepts]: Start accepts. Automaton has 7135 states and 11817 transitions. Word has length 4566
[2023-12-25 17:15:01,785 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 17:15:01,785 INFO  L495      AbstractCegarLoop]: Abstraction has 7135 states and 11817 transitions.
[2023-12-25 17:15:01,786 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 6 states, 6 states have (on average 761.0) internal successors, (4566), 6 states have internal predecessors, (4566), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 17:15:01,786 INFO  L276                IsEmpty]: Start isEmpty. Operand 7135 states and 11817 transitions.
[2023-12-25 17:15:01,891 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 4567
[2023-12-25 17:15:01,891 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 17:15:01,892 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 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[2023-12-25 17:15:01,989 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (93)] Ended with exit code 0
[2023-12-25 17:15:02,120 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95,93 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 17:15:02,120 INFO  L420      AbstractCegarLoop]: === Iteration 97 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 17:15:02,120 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 17:15:02,121 INFO  L85        PathProgramCache]: Analyzing trace with hash -813908515, now seen corresponding path program 1 times
[2023-12-25 17:15:02,121 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 17:15:02,121 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2104544216]
[2023-12-25 17:15:02,121 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 17:15:02,121 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 17:15:02,462 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 17:15:02,463 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1104553778]
[2023-12-25 17:15:02,463 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 17:15:02,464 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 17:15:02,464 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 17:15:02,466 INFO  L229       MonitoredProcess]: Starting monitored process 94 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-25 17:15:02,489 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (94)] Waiting until timeout for monitored process
[2023-12-25 17:15:08,558 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 17:15:08,725 INFO  L262         TraceCheckSpWp]: Trace formula consists of 25967 conjuncts, 10 conjunts are in the unsatisfiable core
[2023-12-25 17:15:08,776 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 17:15:08,829 INFO  L134       CoverageAnalysis]: Checked inductivity of 390 backedges. 390 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-25 17:15:08,829 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 17:15:08,829 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 17:15:08,829 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2104544216]
[2023-12-25 17:15:08,829 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 17:15:08,829 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1104553778]
[2023-12-25 17:15:08,829 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1104553778] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 17:15:08,829 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 17:15:08,830 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2023-12-25 17:15:08,830 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1146976503]
[2023-12-25 17:15:08,830 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 17:15:08,832 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2023-12-25 17:15:08,832 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 17:15:08,834 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2023-12-25 17:15:08,834 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30
[2023-12-25 17:15:08,834 INFO  L87              Difference]: Start difference. First operand 7135 states and 11817 transitions. Second operand  has 6 states, 6 states have (on average 761.0) internal successors, (4566), 6 states have internal predecessors, (4566), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 17:15:09,095 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 17:15:09,095 INFO  L93              Difference]: Finished difference Result 19860 states and 32874 transitions.
[2023-12-25 17:15:09,095 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. 
[2023-12-25 17:15:09,096 INFO  L78                 Accepts]: Start accepts. Automaton has  has 6 states, 6 states have (on average 761.0) internal successors, (4566), 6 states have internal predecessors, (4566), 0 states have call successors, (0), 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 4566
[2023-12-25 17:15:09,097 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 17:15:09,108 INFO  L225             Difference]: With dead ends: 19860
[2023-12-25 17:15:09,108 INFO  L226             Difference]: Without dead ends: 13497
[2023-12-25 17:15:09,115 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 4568 GetRequests, 4562 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 17:15:09,115 INFO  L413           NwaCegarLoop]: 12135 mSDtfsCounter, 10274 mSDsluCounter, 46976 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10274 SdHoareTripleChecker+Valid, 59111 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 17:15:09,115 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [10274 Valid, 59111 Invalid, 64 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-12-25 17:15:09,123 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 13497 states.
[2023-12-25 17:15:09,185 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 13497 to 7140.
[2023-12-25 17:15:09,191 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7140 states, 7139 states have (on average 1.6559742260820842) internal successors, (11822), 7139 states have internal predecessors, (11822), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 17:15:09,197 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7140 states to 7140 states and 11822 transitions.
[2023-12-25 17:15:09,198 INFO  L78                 Accepts]: Start accepts. Automaton has 7140 states and 11822 transitions. Word has length 4566
[2023-12-25 17:15:09,198 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 17:15:09,198 INFO  L495      AbstractCegarLoop]: Abstraction has 7140 states and 11822 transitions.
[2023-12-25 17:15:09,199 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 6 states, 6 states have (on average 761.0) internal successors, (4566), 6 states have internal predecessors, (4566), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 17:15:09,199 INFO  L276                IsEmpty]: Start isEmpty. Operand 7140 states and 11822 transitions.
[2023-12-25 17:15:09,389 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 4567
[2023-12-25 17:15:09,389 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 17:15:09,390 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 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[2023-12-25 17:15:09,477 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (94)] Forceful destruction successful, exit code 0
[2023-12-25 17:15:09,612 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96,94 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 17:15:09,612 INFO  L420      AbstractCegarLoop]: === Iteration 98 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 17:15:09,613 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 17:15:09,613 INFO  L85        PathProgramCache]: Analyzing trace with hash 1220312539, now seen corresponding path program 1 times
[2023-12-25 17:15:09,613 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 17:15:09,613 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [567406920]
[2023-12-25 17:15:09,613 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 17:15:09,613 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 17:15:09,940 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 17:15:09,940 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1093738632]
[2023-12-25 17:15:09,941 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 17:15:09,941 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 17:15:09,941 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 17:15:09,942 INFO  L229       MonitoredProcess]: Starting monitored process 95 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-25 17:15:09,944 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (95)] Waiting until timeout for monitored process
[2023-12-25 17:15:16,195 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 17:15:16,355 INFO  L262         TraceCheckSpWp]: Trace formula consists of 25967 conjuncts, 10 conjunts are in the unsatisfiable core
[2023-12-25 17:15:16,400 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 17:15:16,458 INFO  L134       CoverageAnalysis]: Checked inductivity of 390 backedges. 390 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-25 17:15:16,459 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 17:15:16,459 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 17:15:16,459 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [567406920]
[2023-12-25 17:15:16,459 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 17:15:16,459 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1093738632]
[2023-12-25 17:15:16,459 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1093738632] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 17:15:16,459 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 17:15:16,459 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2023-12-25 17:15:16,459 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1773733699]
[2023-12-25 17:15:16,459 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 17:15:16,461 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2023-12-25 17:15:16,461 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 17:15:16,463 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2023-12-25 17:15:16,463 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30
[2023-12-25 17:15:16,464 INFO  L87              Difference]: Start difference. First operand 7140 states and 11822 transitions. Second operand  has 6 states, 6 states have (on average 761.0) internal successors, (4566), 6 states have internal predecessors, (4566), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 17:15:16,741 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 17:15:16,742 INFO  L93              Difference]: Finished difference Result 19875 states and 32889 transitions.
[2023-12-25 17:15:16,742 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. 
[2023-12-25 17:15:16,743 INFO  L78                 Accepts]: Start accepts. Automaton has  has 6 states, 6 states have (on average 761.0) internal successors, (4566), 6 states have internal predecessors, (4566), 0 states have call successors, (0), 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 4566
[2023-12-25 17:15:16,744 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 17:15:16,756 INFO  L225             Difference]: With dead ends: 19875
[2023-12-25 17:15:16,756 INFO  L226             Difference]: Without dead ends: 13507
[2023-12-25 17:15:16,763 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 4568 GetRequests, 4562 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 17:15:16,763 INFO  L413           NwaCegarLoop]: 15440 mSDtfsCounter, 10274 mSDsluCounter, 56891 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10274 SdHoareTripleChecker+Valid, 72331 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 17:15:16,763 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [10274 Valid, 72331 Invalid, 64 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-12-25 17:15:16,771 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 13507 states.
[2023-12-25 17:15:16,830 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 13507 to 7145.
[2023-12-25 17:15:16,835 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7145 states, 7144 states have (on average 1.655515117581187) internal successors, (11827), 7144 states have internal predecessors, (11827), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 17:15:16,841 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7145 states to 7145 states and 11827 transitions.
[2023-12-25 17:15:16,841 INFO  L78                 Accepts]: Start accepts. Automaton has 7145 states and 11827 transitions. Word has length 4566
[2023-12-25 17:15:16,842 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 17:15:16,842 INFO  L495      AbstractCegarLoop]: Abstraction has 7145 states and 11827 transitions.
[2023-12-25 17:15:16,843 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 6 states, 6 states have (on average 761.0) internal successors, (4566), 6 states have internal predecessors, (4566), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 17:15:16,843 INFO  L276                IsEmpty]: Start isEmpty. Operand 7145 states and 11827 transitions.
[2023-12-25 17:15:16,947 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 4567
[2023-12-25 17:15:16,947 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 17:15:16,948 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 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[2023-12-25 17:15:17,037 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (95)] Forceful destruction successful, exit code 0
[2023-12-25 17:15:17,175 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 95 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable97
[2023-12-25 17:15:17,176 INFO  L420      AbstractCegarLoop]: === Iteration 99 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 17:15:17,176 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 17:15:17,176 INFO  L85        PathProgramCache]: Analyzing trace with hash 1270181209, now seen corresponding path program 1 times
[2023-12-25 17:15:17,176 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 17:15:17,176 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1900326922]
[2023-12-25 17:15:17,177 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 17:15:17,177 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 17:15:17,640 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 17:15:17,640 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1511624502]
[2023-12-25 17:15:17,641 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 17:15:17,641 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 17:15:17,641 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 17:15:17,642 INFO  L229       MonitoredProcess]: Starting monitored process 96 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-25 17:15:17,644 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (96)] Waiting until timeout for monitored process
[2023-12-25 17:15:23,704 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 17:15:23,889 INFO  L262         TraceCheckSpWp]: Trace formula consists of 25967 conjuncts, 47 conjunts are in the unsatisfiable core
[2023-12-25 17:15:23,951 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 17:15:27,567 INFO  L134       CoverageAnalysis]: Checked inductivity of 390 backedges. 246 proven. 144 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-25 17:15:27,567 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-12-25 17:15:39,549 INFO  L134       CoverageAnalysis]: Checked inductivity of 390 backedges. 238 proven. 152 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-25 17:15:39,550 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 17:15:39,550 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1900326922]
[2023-12-25 17:15:39,550 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 17:15:39,550 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1511624502]
[2023-12-25 17:15:39,550 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1511624502] provided 0 perfect and 2 imperfect interpolant sequences
[2023-12-25 17:15:39,550 INFO  L185   FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2023-12-25 17:15:39,551 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 16] total 27
[2023-12-25 17:15:39,551 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [693685240]
[2023-12-25 17:15:39,551 INFO  L85    oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2023-12-25 17:15:39,556 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 27 states
[2023-12-25 17:15:39,556 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 17:15:39,559 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants.
[2023-12-25 17:15:39,559 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=614, Unknown=0, NotChecked=0, Total=702
[2023-12-25 17:15:39,560 INFO  L87              Difference]: Start difference. First operand 7145 states and 11827 transitions. Second operand  has 27 states, 27 states have (on average 326.48148148148147) internal successors, (8815), 27 states have internal predecessors, (8815), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 17:17:03,095 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 17:17:03,095 INFO  L93              Difference]: Finished difference Result 148885 states and 245012 transitions.
[2023-12-25 17:17:03,096 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 186 states. 
[2023-12-25 17:17:03,097 INFO  L78                 Accepts]: Start accepts. Automaton has  has 27 states, 27 states have (on average 326.48148148148147) internal successors, (8815), 27 states have internal predecessors, (8815), 0 states have call successors, (0), 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 4566
[2023-12-25 17:17:03,100 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 17:17:03,240 INFO  L225             Difference]: With dead ends: 148885
[2023-12-25 17:17:03,240 INFO  L226             Difference]: Without dead ends: 142268
[2023-12-25 17:17:03,268 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 9346 GetRequests, 9138 SyntacticMatches, 0 SemanticMatches, 208 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17489 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=5440, Invalid=38450, Unknown=0, NotChecked=0, Total=43890
[2023-12-25 17:17:03,269 INFO  L413           NwaCegarLoop]: 44423 mSDtfsCounter, 496679 mSDsluCounter, 781668 mSDsCounter, 0 mSdLazyCounter, 159800 mSolverCounterSat, 1186 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 57.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 496679 SdHoareTripleChecker+Valid, 826091 SdHoareTripleChecker+Invalid, 160986 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.8s SdHoareTripleChecker+Time, 1186 IncrementalHoareTripleChecker+Valid, 159800 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 68.0s IncrementalHoareTripleChecker+Time
[2023-12-25 17:17:03,269 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [496679 Valid, 826091 Invalid, 160986 Unknown, 0 Unchecked, 1.8s Time], IncrementalHoareTripleChecker [1186 Valid, 159800 Invalid, 0 Unknown, 0 Unchecked, 68.0s Time]
[2023-12-25 17:17:03,347 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 142268 states.
[2023-12-25 17:17:04,143 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 142268 to 13366.
[2023-12-25 17:17:04,155 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 13366 states, 13365 states have (on average 1.6548447437336327) internal successors, (22117), 13365 states have internal predecessors, (22117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 17:17:04,169 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 13366 states to 13366 states and 22117 transitions.
[2023-12-25 17:17:04,170 INFO  L78                 Accepts]: Start accepts. Automaton has 13366 states and 22117 transitions. Word has length 4566
[2023-12-25 17:17:04,172 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 17:17:04,172 INFO  L495      AbstractCegarLoop]: Abstraction has 13366 states and 22117 transitions.
[2023-12-25 17:17:04,173 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 27 states, 27 states have (on average 326.48148148148147) internal successors, (8815), 27 states have internal predecessors, (8815), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 17:17:04,173 INFO  L276                IsEmpty]: Start isEmpty. Operand 13366 states and 22117 transitions.
[2023-12-25 17:17:04,357 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 4568
[2023-12-25 17:17:04,357 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 17:17:04,358 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 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[2023-12-25 17:17:04,454 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (96)] Forceful destruction successful, exit code 0
[2023-12-25 17:17:04,584 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 96 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable98
[2023-12-25 17:17:04,584 INFO  L420      AbstractCegarLoop]: === Iteration 100 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 17:17:04,584 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 17:17:04,585 INFO  L85        PathProgramCache]: Analyzing trace with hash -676036425, now seen corresponding path program 1 times
[2023-12-25 17:17:04,585 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 17:17:04,585 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1839202596]
[2023-12-25 17:17:04,585 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 17:17:04,585 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 17:17:04,925 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 17:17:04,926 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1825953278]
[2023-12-25 17:17:04,926 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 17:17:04,927 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 17:17:04,927 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 17:17:04,927 INFO  L229       MonitoredProcess]: Starting monitored process 97 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-25 17:17:04,929 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (97)] Waiting until timeout for monitored process
Received shutdown request...
[2023-12-25 17:17:06,410 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 17:17:06,410 WARN  L340       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (97)] Timeout while monitored process is still running, waiting 1000 ms for graceful end
[2023-12-25 17:17:07,416 ERROR L246   FreeRefinementEngine]: Caught known exception: Timeout or Toolchain cancelled by user
[2023-12-25 17:17:07,419 INFO  L805   garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining)
[2023-12-25 17:17:07,463 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (97)] Forceful destruction successful, exit code 0
[2023-12-25 17:17:07,611 WARN  L435       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forcibly destroying the process
[2023-12-25 17:17:07,621 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 97 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable99
[2023-12-25 17:17:07,621 WARN  L619      AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was analyzing trace of length 4568 with TraceHistMax 2,while AutomatonFreeRefinementEngine was Timeout during CAMEL.
[2023-12-25 17:17:07,624 INFO  L445         BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:17:07,626 INFO  L179   ceAbstractionStarter]: Computing trace abstraction results
[2023-12-25 17:17:07,627 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.12 05:17:07 BoogieIcfgContainer
[2023-12-25 17:17:07,627 INFO  L131        PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2023-12-25 17:17:07,627 INFO  L158              Benchmark]: Toolchain (without parser) took 836330.56ms. Allocated memory was 288.4MB in the beginning and 4.8GB in the end (delta: 4.5GB). Free memory was 232.9MB in the beginning and 849.6MB in the end (delta: -616.7MB). Peak memory consumption was 3.9GB. Max. memory is 8.0GB.
[2023-12-25 17:17:07,627 INFO  L158              Benchmark]: CDTParser took 0.08ms. Allocated memory is still 208.7MB. Free memory is still 161.3MB. There was no memory consumed. Max. memory is 8.0GB.
[2023-12-25 17:17:07,627 INFO  L158              Benchmark]: CACSL2BoogieTranslator took 1446.38ms. Allocated memory was 288.4MB in the beginning and 481.3MB in the end (delta: 192.9MB). Free memory was 232.8MB in the beginning and 267.7MB in the end (delta: -34.9MB). Peak memory consumption was 165.9MB. Max. memory is 8.0GB.
[2023-12-25 17:17:07,627 INFO  L158              Benchmark]: Boogie Procedure Inliner took 2368.34ms. Allocated memory was 481.3MB in the beginning and 2.3GB in the end (delta: 1.8GB). Free memory was 267.7MB in the beginning and 1.8GB in the end (delta: -1.5GB). Peak memory consumption was 346.6MB. Max. memory is 8.0GB.
[2023-12-25 17:17:07,627 INFO  L158              Benchmark]: Boogie Preprocessor took 2455.11ms. Allocated memory is still 2.3GB. Free memory was 1.8GB in the beginning and 1.6GB in the end (delta: 166.7MB). Peak memory consumption was 189.3MB. Max. memory is 8.0GB.
[2023-12-25 17:17:07,627 INFO  L158              Benchmark]: RCFGBuilder took 11878.59ms. Allocated memory was 2.3GB in the beginning and 4.2GB in the end (delta: 2.0GB). Free memory was 1.6GB in the beginning and 3.1GB in the end (delta: -1.4GB). Peak memory consumption was 632.3MB. Max. memory is 8.0GB.
[2023-12-25 17:17:07,627 INFO  L158              Benchmark]: TraceAbstraction took 818175.58ms. Allocated memory was 4.2GB in the beginning and 4.8GB in the end (delta: 590.3MB). Free memory was 3.1GB in the beginning and 849.6MB in the end (delta: 2.2GB). Peak memory consumption was 2.8GB. Max. memory is 8.0GB.
[2023-12-25 17:17:07,628 INFO  L338   ainManager$Toolchain]: #######################  End [Toolchain 1] #######################
 --- Results ---
 * Results from de.uni_freiburg.informatik.ultimate.core:
  - StatisticsResult: Toolchain Benchmarks
    Benchmark results are:
 * CDTParser took 0.08ms. Allocated memory is still 208.7MB. Free memory is still 161.3MB. There was no memory consumed. Max. memory is 8.0GB.
 * CACSL2BoogieTranslator took 1446.38ms. Allocated memory was 288.4MB in the beginning and 481.3MB in the end (delta: 192.9MB). Free memory was 232.8MB in the beginning and 267.7MB in the end (delta: -34.9MB). Peak memory consumption was 165.9MB. Max. memory is 8.0GB.
 * Boogie Procedure Inliner took 2368.34ms. Allocated memory was 481.3MB in the beginning and 2.3GB in the end (delta: 1.8GB). Free memory was 267.7MB in the beginning and 1.8GB in the end (delta: -1.5GB). Peak memory consumption was 346.6MB. Max. memory is 8.0GB.
 * Boogie Preprocessor took 2455.11ms. Allocated memory is still 2.3GB. Free memory was 1.8GB in the beginning and 1.6GB in the end (delta: 166.7MB). Peak memory consumption was 189.3MB. Max. memory is 8.0GB.
 * RCFGBuilder took 11878.59ms. Allocated memory was 2.3GB in the beginning and 4.2GB in the end (delta: 2.0GB). Free memory was 1.6GB in the beginning and 3.1GB in the end (delta: -1.4GB). Peak memory consumption was 632.3MB. Max. memory is 8.0GB.
 * TraceAbstraction took 818175.58ms. Allocated memory was 4.2GB in the beginning and 4.8GB in the end (delta: 590.3MB). Free memory was 3.1GB in the beginning and 849.6MB in the end (delta: 2.2GB). 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 analyzing trace of length 4568 with TraceHistMax 2,while AutomatonFreeRefinementEngine was Timeout during CAMEL.
  - StatisticsResult: Ultimate Automizer benchmark data
    CFG has 1 procedures, 6352 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 818.1s, OverallIterations: 100, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 12.4s, AutomataDifference: 117.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 3054796 SdHoareTripleChecker+Valid, 74.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 3054796 mSDsluCounter, 6250386 SdHoareTripleChecker+Invalid, 63.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 5094834 mSDsCounter, 1213 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 164343 IncrementalHoareTripleChecker+Invalid, 165556 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1213 mSolverCounterUnsat, 1155552 mSDtfsCounter, 164343 mSolverCounterSat, 9.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 435233 GetRequests, 433988 SyntacticMatches, 0 SemanticMatches, 1245 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18874 ImplicationChecksByTransitivity, 6.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=13366occurred in iteration=99, InterpolantAutomatonStates: 1066, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 10.1s AutomataMinimizationTime, 99 MinimizatonAttempts, 670032 StatesRemovedByMinimization, 98 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 131.7s SsaConstructionTime, 337.9s SatisfiabilityAnalysisTime, 57.7s InterpolantComputationTime, 431805 NumberOfCodeBlocks, 431805 NumberOfCodeBlocksAsserted, 99 NumberOfCheckSat, 436271 ConstructedInterpolants, 0 QuantifiedInterpolants, 518770 SizeOfPredicates, 440 NumberOfNonLiveVariables, 2453617 ConjunctsInSsa, 1709 ConjunctsInUnsatCore, 100 InterpolantComputations, 98 PerfectInterpolantSequences, 37144/37440 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