/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.lifts.1.prop1-back-serstep.c


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


This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m
[2023-12-25 19:28:57,050 INFO  L188        SettingsManager]: Resetting all preferences to default values...
[2023-12-25 19:28:57,122 INFO  L114        SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf
[2023-12-25 19:28:57,126 WARN  L101        SettingsManager]: Preference file contains the following unknown settings:
[2023-12-25 19:28:57,126 WARN  L103        SettingsManager]:   * de.uni_freiburg.informatik.ultimate.core.Log level for class
[2023-12-25 19:28:57,148 INFO  L130        SettingsManager]: Preferences different from defaults after loading the file:
[2023-12-25 19:28:57,148 INFO  L151        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2023-12-25 19:28:57,148 INFO  L153        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2023-12-25 19:28:57,149 INFO  L151        SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults:
[2023-12-25 19:28:57,152 INFO  L153        SettingsManager]:  * Use memory slicer=true
[2023-12-25 19:28:57,152 INFO  L151        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2023-12-25 19:28:57,153 INFO  L153        SettingsManager]:  * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2023-12-25 19:28:57,153 INFO  L151        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2023-12-25 19:28:57,154 INFO  L153        SettingsManager]:  * Create parallel compositions if possible=false
[2023-12-25 19:28:57,154 INFO  L153        SettingsManager]:  * Use SBE=true
[2023-12-25 19:28:57,154 INFO  L151        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2023-12-25 19:28:57,154 INFO  L153        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2023-12-25 19:28:57,155 INFO  L153        SettingsManager]:  * Overapproximate operations on floating types=true
[2023-12-25 19:28:57,155 INFO  L153        SettingsManager]:  * Check division by zero=IGNORE
[2023-12-25 19:28:57,156 INFO  L153        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2023-12-25 19:28:57,156 INFO  L153        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2023-12-25 19:28:57,156 INFO  L153        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2023-12-25 19:28:57,157 INFO  L153        SettingsManager]:  * Allow undefined functions=false
[2023-12-25 19:28:57,157 INFO  L153        SettingsManager]:  * Check if freed pointer was valid=false
[2023-12-25 19:28:57,157 INFO  L153        SettingsManager]:  * Use constant arrays=true
[2023-12-25 19:28:57,157 INFO  L151        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2023-12-25 19:28:57,157 INFO  L153        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2023-12-25 19:28:57,158 INFO  L153        SettingsManager]:  * Only consider context switches at boundaries of atomic blocks=true
[2023-12-25 19:28:57,158 INFO  L153        SettingsManager]:  * SMT solver=External_DefaultMode
[2023-12-25 19:28:57,158 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2023-12-25 19:28:57,159 INFO  L151        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2023-12-25 19:28:57,159 INFO  L153        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2023-12-25 19:28:57,159 INFO  L153        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopHeads
[2023-12-25 19:28:57,159 INFO  L153        SettingsManager]:  * Trace refinement strategy=CAMEL
[2023-12-25 19:28:57,159 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2023-12-25 19:28:57,159 INFO  L153        SettingsManager]:  * Apply one-shot large block encoding in concurrent analysis=false
[2023-12-25 19:28:57,159 INFO  L153        SettingsManager]:  * Automaton type used in concurrency analysis=PETRI_NET
[2023-12-25 19:28:57,160 INFO  L153        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2023-12-25 19:28:57,160 INFO  L153        SettingsManager]:  * Order on configurations for Petri net unfoldings=DBO
[2023-12-25 19:28:57,160 INFO  L153        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2023-12-25 19:28:57,160 INFO  L153        SettingsManager]:  * Looper check in Petri net analysis=SEMANTIC
WARNING: An illegal reflective access operation has occurred
WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int)
WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true
[2023-12-25 19:28:57,346 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2023-12-25 19:28:57,372 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2023-12-25 19:28:57,373 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2023-12-25 19:28:57,374 INFO  L270        PluginConnector]: Initializing CDTParser...
[2023-12-25 19:28:57,375 INFO  L274        PluginConnector]: CDTParser initialized
[2023-12-25 19:28:57,375 INFO  L431   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.lifts.1.prop1-back-serstep.c
[2023-12-25 19:28:58,505 INFO  L533              CDTParser]: Created temporary CDT project at NULL
[2023-12-25 19:28:58,905 INFO  L384              CDTParser]: Found 1 translation units.
[2023-12-25 19:28:58,906 INFO  L180              CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.lifts.1.prop1-back-serstep.c
[2023-12-25 19:28:58,931 INFO  L427              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3d1bf1396/6c122a10c5de4ae5904f026b2d586e81/FLAG5adbd132a
[2023-12-25 19:28:58,944 INFO  L435              CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3d1bf1396/6c122a10c5de4ae5904f026b2d586e81
[2023-12-25 19:28:58,947 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2023-12-25 19:28:58,948 INFO  L133        ToolchainWalker]: Walking toolchain with 5 elements.
[2023-12-25 19:28:58,949 INFO  L112        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2023-12-25 19:28:58,950 INFO  L270        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2023-12-25 19:28:58,953 INFO  L274        PluginConnector]: CACSL2BoogieTranslator initialized
[2023-12-25 19:28:58,953 INFO  L184        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.12 07:28:58" (1/1) ...
[2023-12-25 19:28:58,954 INFO  L204        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1a63e4b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 07:28:58, skipping insertion in model container
[2023-12-25 19:28:58,954 INFO  L184        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.12 07:28:58" (1/1) ...
[2023-12-25 19:28:59,056 INFO  L177         MainTranslator]: Built tables and reachable declarations
[2023-12-25 19:28:59,270 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.lifts.1.prop1-back-serstep.c[1173,1186]
[2023-12-25 19:28:59,851 INFO  L209          PostProcessor]: Analyzing one entry point: main
[2023-12-25 19:28:59,858 INFO  L202         MainTranslator]: Completed pre-run
[2023-12-25 19:28:59,865 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.lifts.1.prop1-back-serstep.c[1173,1186]
[2023-12-25 19:29:00,347 INFO  L209          PostProcessor]: Analyzing one entry point: main
[2023-12-25 19:29:00,357 INFO  L206         MainTranslator]: Completed translation
[2023-12-25 19:29:00,357 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 07:29:00 WrapperNode
[2023-12-25 19:29:00,357 INFO  L131        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2023-12-25 19:29:00,358 INFO  L112        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2023-12-25 19:29:00,359 INFO  L270        PluginConnector]: Initializing Boogie Procedure Inliner...
[2023-12-25 19:29:00,359 INFO  L274        PluginConnector]: Boogie Procedure Inliner initialized
[2023-12-25 19:29:00,363 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 07:29:00" (1/1) ...
[2023-12-25 19:29:00,641 INFO  L184        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 07:29:00" (1/1) ...
[2023-12-25 19:29:03,123 INFO  L138                Inliner]: procedures = 17, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 36527
[2023-12-25 19:29:03,123 INFO  L131        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2023-12-25 19:29:03,124 INFO  L112        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2023-12-25 19:29:03,124 INFO  L270        PluginConnector]: Initializing Boogie Preprocessor...
[2023-12-25 19:29:03,124 INFO  L274        PluginConnector]: Boogie Preprocessor initialized
[2023-12-25 19:29:03,131 INFO  L184        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 07:29:00" (1/1) ...
[2023-12-25 19:29:03,131 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 07:29:00" (1/1) ...
[2023-12-25 19:29:03,852 INFO  L184        PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 07:29:00" (1/1) ...
[2023-12-25 19:29:04,236 INFO  L175           MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0].
[2023-12-25 19:29:04,236 INFO  L184        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 07:29:00" (1/1) ...
[2023-12-25 19:29:04,236 INFO  L184        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 07:29:00" (1/1) ...
[2023-12-25 19:29:05,074 INFO  L184        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 07:29:00" (1/1) ...
[2023-12-25 19:29:05,175 INFO  L184        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 07:29:00" (1/1) ...
[2023-12-25 19:29:05,299 INFO  L184        PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 07:29:00" (1/1) ...
[2023-12-25 19:29:05,395 INFO  L184        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 07:29:00" (1/1) ...
[2023-12-25 19:29:05,881 INFO  L131        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2023-12-25 19:29:05,883 INFO  L112        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2023-12-25 19:29:05,883 INFO  L270        PluginConnector]: Initializing RCFGBuilder...
[2023-12-25 19:29:05,883 INFO  L274        PluginConnector]: RCFGBuilder initialized
[2023-12-25 19:29:05,884 INFO  L184        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 07:29:00" (1/1) ...
[2023-12-25 19:29:05,914 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2023-12-25 19:29:05,926 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 19:29:05,947 INFO  L229       MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null)
[2023-12-25 19:29:05,985 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process
[2023-12-25 19:29:05,989 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2023-12-25 19:29:05,989 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int#0
[2023-12-25 19:29:05,989 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2023-12-25 19:29:05,989 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2023-12-25 19:29:07,300 INFO  L241             CfgBuilder]: Building ICFG
[2023-12-25 19:29:07,302 INFO  L267             CfgBuilder]: Building CFG for each procedure with an implementation
[2023-12-25 19:29:19,830 INFO  L282             CfgBuilder]: Performing block encoding
[2023-12-25 19:29:20,374 INFO  L304             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2023-12-25 19:29:20,374 INFO  L309             CfgBuilder]: Removed 1 assume(true) statements.
[2023-12-25 19:29:20,374 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.12 07:29:20 BoogieIcfgContainer
[2023-12-25 19:29:20,374 INFO  L131        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2023-12-25 19:29:20,376 INFO  L112        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2023-12-25 19:29:20,376 INFO  L270        PluginConnector]: Initializing TraceAbstraction...
[2023-12-25 19:29:20,378 INFO  L274        PluginConnector]: TraceAbstraction initialized
[2023-12-25 19:29:20,378 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.12 07:28:58" (1/3) ...
[2023-12-25 19:29:20,379 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c2eb1ba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.12 07:29:20, skipping insertion in model container
[2023-12-25 19:29:20,379 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 07:29:00" (2/3) ...
[2023-12-25 19:29:20,379 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c2eb1ba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.12 07:29:20, skipping insertion in model container
[2023-12-25 19:29:20,379 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.12 07:29:20" (3/3) ...
[2023-12-25 19:29:20,380 INFO  L112   eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.lifts.1.prop1-back-serstep.c
[2023-12-25 19:29:20,391 INFO  L204   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2023-12-25 19:29:20,391 INFO  L163   ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2023-12-25 19:29:20,503 INFO  L356      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2023-12-25 19:29:20,508 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;@5927a780, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2023-12-25 19:29:20,508 INFO  L358      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2023-12-25 19:29:20,528 INFO  L276                IsEmpty]: Start isEmpty. Operand  has 8475 states, 8473 states have (on average 1.6701286439277705) internal successors, (14151), 8474 states have internal predecessors, (14151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 19:29:20,558 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 685
[2023-12-25 19:29:20,558 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 19:29:20,559 INFO  L195           NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-12-25 19:29:20,560 INFO  L420      AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 19:29:20,579 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 19:29:20,580 INFO  L85        PathProgramCache]: Analyzing trace with hash 1080449071, now seen corresponding path program 1 times
[2023-12-25 19:29:20,587 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 19:29:20,587 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1644478148]
[2023-12-25 19:29:20,588 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 19:29:20,588 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 19:29:21,142 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 19:29:22,945 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-25 19:29:22,946 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 19:29:22,946 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1644478148]
[2023-12-25 19:29:22,946 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1644478148] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 19:29:22,946 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 19:29:22,947 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-12-25 19:29:22,948 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [733231678]
[2023-12-25 19:29:22,949 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 19:29:22,954 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-12-25 19:29:22,954 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 19:29:22,977 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-12-25 19:29:22,978 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-12-25 19:29:22,993 INFO  L87              Difference]: Start difference. First operand  has 8475 states, 8473 states have (on average 1.6701286439277705) internal successors, (14151), 8474 states have internal predecessors, (14151), 0 states have call successors, (0), 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 171.0) internal successors, (684), 4 states have internal predecessors, (684), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 19:29:23,293 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 19:29:23,293 INFO  L93              Difference]: Finished difference Result 16745 states and 27963 transitions.
[2023-12-25 19:29:23,294 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-12-25 19:29:23,296 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 171.0) internal successors, (684), 4 states have internal predecessors, (684), 0 states have call successors, (0), 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 684
[2023-12-25 19:29:23,299 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 19:29:23,336 INFO  L225             Difference]: With dead ends: 16745
[2023-12-25 19:29:23,336 INFO  L226             Difference]: Without dead ends: 8475
[2023-12-25 19:29:23,353 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-12-25 19:29:23,355 INFO  L413           NwaCegarLoop]: 14144 mSDtfsCounter, 1 mSDsluCounter, 28283 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 42427 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-12-25 19:29:23,357 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 42427 Invalid, 13 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-12-25 19:29:23,378 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 8475 states.
[2023-12-25 19:29:23,495 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 8475 to 8475.
[2023-12-25 19:29:23,518 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 8475 states, 8474 states have (on average 1.6696955392966721) internal successors, (14149), 8474 states have internal predecessors, (14149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 19:29:23,535 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 8475 states to 8475 states and 14149 transitions.
[2023-12-25 19:29:23,536 INFO  L78                 Accepts]: Start accepts. Automaton has 8475 states and 14149 transitions. Word has length 684
[2023-12-25 19:29:23,538 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 19:29:23,538 INFO  L495      AbstractCegarLoop]: Abstraction has 8475 states and 14149 transitions.
[2023-12-25 19:29:23,539 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 171.0) internal successors, (684), 4 states have internal predecessors, (684), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 19:29:23,539 INFO  L276                IsEmpty]: Start isEmpty. Operand 8475 states and 14149 transitions.
[2023-12-25 19:29:23,548 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 686
[2023-12-25 19:29:23,548 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 19:29:23,548 INFO  L195           NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-12-25 19:29:23,549 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2023-12-25 19:29:23,549 INFO  L420      AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 19:29:23,549 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 19:29:23,549 INFO  L85        PathProgramCache]: Analyzing trace with hash -864088139, now seen corresponding path program 1 times
[2023-12-25 19:29:23,549 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 19:29:23,550 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1267924463]
[2023-12-25 19:29:23,550 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 19:29:23,550 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 19:29:23,793 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 19:29:24,505 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-25 19:29:24,506 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 19:29:24,506 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1267924463]
[2023-12-25 19:29:24,506 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1267924463] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 19:29:24,506 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 19:29:24,506 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-12-25 19:29:24,506 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [488357788]
[2023-12-25 19:29:24,507 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 19:29:24,509 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-12-25 19:29:24,512 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 19:29:24,513 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-12-25 19:29:24,513 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-12-25 19:29:24,513 INFO  L87              Difference]: Start difference. First operand 8475 states and 14149 transitions. Second operand  has 4 states, 4 states have (on average 171.25) internal successors, (685), 4 states have internal predecessors, (685), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 19:29:24,766 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 19:29:24,767 INFO  L93              Difference]: Finished difference Result 16748 states and 27961 transitions.
[2023-12-25 19:29:24,768 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-12-25 19:29:24,768 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 171.25) internal successors, (685), 4 states have internal predecessors, (685), 0 states have call successors, (0), 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 685
[2023-12-25 19:29:24,769 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 19:29:24,788 INFO  L225             Difference]: With dead ends: 16748
[2023-12-25 19:29:24,788 INFO  L226             Difference]: Without dead ends: 8478
[2023-12-25 19:29:24,794 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-12-25 19:29:24,795 INFO  L413           NwaCegarLoop]: 14144 mSDtfsCounter, 1 mSDsluCounter, 28281 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 42425 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 19:29:24,796 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 42425 Invalid, 15 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-12-25 19:29:24,805 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 8478 states.
[2023-12-25 19:29:24,896 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 8478 to 8477.
[2023-12-25 19:29:24,907 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 8477 states, 8476 states have (on average 1.6695375176970269) internal successors, (14151), 8476 states have internal predecessors, (14151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 19:29:24,924 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 8477 states to 8477 states and 14151 transitions.
[2023-12-25 19:29:24,924 INFO  L78                 Accepts]: Start accepts. Automaton has 8477 states and 14151 transitions. Word has length 685
[2023-12-25 19:29:24,925 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 19:29:24,925 INFO  L495      AbstractCegarLoop]: Abstraction has 8477 states and 14151 transitions.
[2023-12-25 19:29:24,926 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 171.25) internal successors, (685), 4 states have internal predecessors, (685), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 19:29:24,926 INFO  L276                IsEmpty]: Start isEmpty. Operand 8477 states and 14151 transitions.
[2023-12-25 19:29:24,934 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 687
[2023-12-25 19:29:24,935 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 19:29:24,935 INFO  L195           NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-12-25 19:29:24,936 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2023-12-25 19:29:24,936 INFO  L420      AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 19:29:24,936 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 19:29:24,937 INFO  L85        PathProgramCache]: Analyzing trace with hash -1227356919, now seen corresponding path program 1 times
[2023-12-25 19:29:24,937 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 19:29:24,937 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [875639391]
[2023-12-25 19:29:24,937 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 19:29:24,937 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 19:29:25,128 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 19:29:25,958 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-25 19:29:25,958 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 19:29:25,958 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [875639391]
[2023-12-25 19:29:25,959 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [875639391] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 19:29:25,959 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 19:29:25,959 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-12-25 19:29:25,959 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1869776643]
[2023-12-25 19:29:25,959 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 19:29:25,960 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-12-25 19:29:25,960 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 19:29:25,961 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-12-25 19:29:25,962 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2023-12-25 19:29:25,963 INFO  L87              Difference]: Start difference. First operand 8477 states and 14151 transitions. Second operand  has 5 states, 5 states have (on average 137.2) internal successors, (686), 4 states have internal predecessors, (686), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 19:29:26,373 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 19:29:26,374 INFO  L93              Difference]: Finished difference Result 25824 states and 43111 transitions.
[2023-12-25 19:29:26,374 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2023-12-25 19:29:26,375 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 137.2) internal successors, (686), 4 states have internal predecessors, (686), 0 states have call successors, (0), 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 686
[2023-12-25 19:29:26,375 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 19:29:26,421 INFO  L225             Difference]: With dead ends: 25824
[2023-12-25 19:29:26,421 INFO  L226             Difference]: Without dead ends: 17552
[2023-12-25 19:29:26,437 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 19:29:26,439 INFO  L413           NwaCegarLoop]: 15493 mSDtfsCounter, 56214 mSDsluCounter, 28282 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56214 SdHoareTripleChecker+Valid, 43775 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 19:29:26,440 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [56214 Valid, 43775 Invalid, 16 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-12-25 19:29:26,457 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 17552 states.
[2023-12-25 19:29:26,638 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 17552 to 9289.
[2023-12-25 19:29:26,651 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 9289 states, 9288 states have (on average 1.669142980189492) internal successors, (15503), 9288 states have internal predecessors, (15503), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 19:29:26,665 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 9289 states to 9289 states and 15503 transitions.
[2023-12-25 19:29:26,666 INFO  L78                 Accepts]: Start accepts. Automaton has 9289 states and 15503 transitions. Word has length 686
[2023-12-25 19:29:26,666 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 19:29:26,666 INFO  L495      AbstractCegarLoop]: Abstraction has 9289 states and 15503 transitions.
[2023-12-25 19:29:26,667 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 137.2) internal successors, (686), 4 states have internal predecessors, (686), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 19:29:26,668 INFO  L276                IsEmpty]: Start isEmpty. Operand 9289 states and 15503 transitions.
[2023-12-25 19:29:26,939 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 6052
[2023-12-25 19:29:26,940 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 19:29:26,946 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-12-25 19:29:26,947 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2023-12-25 19:29:26,947 INFO  L420      AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 19:29:26,947 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 19:29:26,948 INFO  L85        PathProgramCache]: Analyzing trace with hash 666661584, now seen corresponding path program 1 times
[2023-12-25 19:29:26,948 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 19:29:26,948 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1142125037]
[2023-12-25 19:29:26,949 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 19:29:26,949 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 19:29:27,397 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 19:29:27,397 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1329683121]
[2023-12-25 19:29:27,399 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 19:29:27,399 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 19:29:27,399 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 19:29:27,402 INFO  L229       MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-25 19:29:27,418 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process
[2023-12-25 19:29:33,694 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 19:29:33,878 INFO  L262         TraceCheckSpWp]: Trace formula consists of 26643 conjuncts, 6 conjunts are in the unsatisfiable core
[2023-12-25 19:29:33,974 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 19:29:34,105 INFO  L134       CoverageAnalysis]: Checked inductivity of 546 backedges. 546 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-25 19:29:34,105 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 19:29:34,106 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 19:29:34,106 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1142125037]
[2023-12-25 19:29:34,106 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 19:29:34,106 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1329683121]
[2023-12-25 19:29:34,106 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1329683121] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 19:29:34,106 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 19:29:34,107 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-12-25 19:29:34,107 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2049406663]
[2023-12-25 19:29:34,107 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 19:29:34,111 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-12-25 19:29:34,111 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 19:29:34,116 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-12-25 19:29:34,116 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-12-25 19:29:34,118 INFO  L87              Difference]: Start difference. First operand 9289 states and 15503 transitions. Second operand  has 4 states, 4 states have (on average 1512.75) internal successors, (6051), 4 states have internal predecessors, (6051), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 19:29:34,313 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 19:29:34,313 INFO  L93              Difference]: Finished difference Result 17571 states and 29329 transitions.
[2023-12-25 19:29:34,313 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-12-25 19:29:34,315 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 1512.75) internal successors, (6051), 4 states have internal predecessors, (6051), 0 states have call successors, (0), 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 6051
[2023-12-25 19:29:34,316 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 19:29:34,444 INFO  L225             Difference]: With dead ends: 17571
[2023-12-25 19:29:34,444 INFO  L226             Difference]: Without dead ends: 9299
[2023-12-25 19:29:34,451 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 6050 GetRequests, 6048 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-12-25 19:29:34,456 INFO  L413           NwaCegarLoop]: 14144 mSDtfsCounter, 12 mSDsluCounter, 28278 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 42422 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 19:29:34,456 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 42422 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-12-25 19:29:34,469 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 9299 states.
[2023-12-25 19:29:34,574 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 9299 to 9291.
[2023-12-25 19:29:34,587 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 9291 states, 9290 states have (on average 1.6689989235737352) internal successors, (15505), 9290 states have internal predecessors, (15505), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 19:29:34,604 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 9291 states to 9291 states and 15505 transitions.
[2023-12-25 19:29:34,604 INFO  L78                 Accepts]: Start accepts. Automaton has 9291 states and 15505 transitions. Word has length 6051
[2023-12-25 19:29:34,606 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 19:29:34,606 INFO  L495      AbstractCegarLoop]: Abstraction has 9291 states and 15505 transitions.
[2023-12-25 19:29:34,608 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 1512.75) internal successors, (6051), 4 states have internal predecessors, (6051), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 19:29:34,608 INFO  L276                IsEmpty]: Start isEmpty. Operand 9291 states and 15505 transitions.
[2023-12-25 19:29:34,805 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 6052
[2023-12-25 19:29:34,805 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 19:29:34,808 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 19:29:34,903 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 19:29:35,028 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 19:29:35,029 INFO  L420      AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 19:29:35,029 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 19:29:35,031 INFO  L85        PathProgramCache]: Analyzing trace with hash 2057667102, now seen corresponding path program 1 times
[2023-12-25 19:29:35,031 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 19:29:35,031 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1385984956]
[2023-12-25 19:29:35,032 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 19:29:35,032 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 19:29:35,507 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 19:29:35,507 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1643330515]
[2023-12-25 19:29:35,508 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 19:29:35,508 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 19:29:35,508 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 19:29:35,509 INFO  L229       MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-25 19:29:35,535 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process
[2023-12-25 19:29:41,759 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 19:29:41,964 INFO  L262         TraceCheckSpWp]: Trace formula consists of 26644 conjuncts, 6 conjunts are in the unsatisfiable core
[2023-12-25 19:29:42,249 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 19:29:42,346 INFO  L134       CoverageAnalysis]: Checked inductivity of 546 backedges. 546 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-25 19:29:42,346 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 19:29:42,347 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 19:29:42,347 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1385984956]
[2023-12-25 19:29:42,347 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 19:29:42,347 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1643330515]
[2023-12-25 19:29:42,347 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1643330515] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 19:29:42,347 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 19:29:42,347 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-12-25 19:29:42,348 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1399001514]
[2023-12-25 19:29:42,348 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 19:29:42,352 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-12-25 19:29:42,352 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 19:29:42,356 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-12-25 19:29:42,356 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-12-25 19:29:42,357 INFO  L87              Difference]: Start difference. First operand 9291 states and 15505 transitions. Second operand  has 4 states, 4 states have (on average 1512.75) internal successors, (6051), 4 states have internal predecessors, (6051), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 19:29:42,556 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 19:29:42,556 INFO  L93              Difference]: Finished difference Result 17574 states and 29331 transitions.
[2023-12-25 19:29:42,557 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-12-25 19:29:42,559 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 1512.75) internal successors, (6051), 4 states have internal predecessors, (6051), 0 states have call successors, (0), 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 6051
[2023-12-25 19:29:42,560 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 19:29:42,572 INFO  L225             Difference]: With dead ends: 17574
[2023-12-25 19:29:42,572 INFO  L226             Difference]: Without dead ends: 9300
[2023-12-25 19:29:42,582 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 6050 GetRequests, 6048 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-12-25 19:29:42,583 INFO  L413           NwaCegarLoop]: 14144 mSDtfsCounter, 12 mSDsluCounter, 28278 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 42422 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2023-12-25 19:29:42,583 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 42422 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-12-25 19:29:42,593 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 9300 states.
[2023-12-25 19:29:42,683 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 9300 to 9292.
[2023-12-25 19:29:42,697 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 9292 states, 9291 states have (on average 1.6689269185233022) internal successors, (15506), 9291 states have internal predecessors, (15506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 19:29:42,710 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 9292 states to 9292 states and 15506 transitions.
[2023-12-25 19:29:42,710 INFO  L78                 Accepts]: Start accepts. Automaton has 9292 states and 15506 transitions. Word has length 6051
[2023-12-25 19:29:42,711 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 19:29:42,712 INFO  L495      AbstractCegarLoop]: Abstraction has 9292 states and 15506 transitions.
[2023-12-25 19:29:42,713 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 1512.75) internal successors, (6051), 4 states have internal predecessors, (6051), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 19:29:42,714 INFO  L276                IsEmpty]: Start isEmpty. Operand 9292 states and 15506 transitions.
[2023-12-25 19:29:42,997 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 6052
[2023-12-25 19:29:42,997 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 19:29:42,999 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-12-25 19:29:43,080 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0
[2023-12-25 19:29:43,224 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 19:29:43,225 INFO  L420      AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 19:29:43,225 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 19:29:43,226 INFO  L85        PathProgramCache]: Analyzing trace with hash -1771888532, now seen corresponding path program 1 times
[2023-12-25 19:29:43,227 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 19:29:43,227 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1943346927]
[2023-12-25 19:29:43,227 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 19:29:43,227 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 19:29:43,793 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 19:29:43,794 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [726237068]
[2023-12-25 19:29:43,797 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 19:29:43,798 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 19:29:43,798 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 19:29:43,813 INFO  L229       MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-25 19:29:43,888 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process
[2023-12-25 19:29:49,815 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 19:29:50,014 INFO  L262         TraceCheckSpWp]: Trace formula consists of 26645 conjuncts, 6 conjunts are in the unsatisfiable core
[2023-12-25 19:29:50,112 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 19:29:50,310 INFO  L134       CoverageAnalysis]: Checked inductivity of 546 backedges. 546 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-25 19:29:50,310 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 19:29:50,310 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 19:29:50,310 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1943346927]
[2023-12-25 19:29:50,310 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 19:29:50,310 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [726237068]
[2023-12-25 19:29:50,310 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [726237068] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 19:29:50,310 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 19:29:50,311 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-12-25 19:29:50,311 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1933241710]
[2023-12-25 19:29:50,311 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 19:29:50,315 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-12-25 19:29:50,315 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 19:29:50,320 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-12-25 19:29:50,321 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-12-25 19:29:50,321 INFO  L87              Difference]: Start difference. First operand 9292 states and 15506 transitions. Second operand  has 4 states, 4 states have (on average 1512.75) internal successors, (6051), 4 states have internal predecessors, (6051), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 19:29:50,490 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 19:29:50,490 INFO  L93              Difference]: Finished difference Result 17576 states and 29333 transitions.
[2023-12-25 19:29:50,490 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-12-25 19:29:50,492 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 1512.75) internal successors, (6051), 4 states have internal predecessors, (6051), 0 states have call successors, (0), 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 6051
[2023-12-25 19:29:50,493 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 19:29:50,505 INFO  L225             Difference]: With dead ends: 17576
[2023-12-25 19:29:50,505 INFO  L226             Difference]: Without dead ends: 9301
[2023-12-25 19:29:50,516 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 6050 GetRequests, 6048 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-12-25 19:29:50,517 INFO  L413           NwaCegarLoop]: 14144 mSDtfsCounter, 12 mSDsluCounter, 28278 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 42422 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2023-12-25 19:29:50,517 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 42422 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-12-25 19:29:50,526 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 9301 states.
[2023-12-25 19:29:50,607 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 9301 to 9293.
[2023-12-25 19:29:50,618 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 9293 states, 9292 states have (on average 1.668854928971158) internal successors, (15507), 9292 states have internal predecessors, (15507), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 19:29:50,631 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 9293 states to 9293 states and 15507 transitions.
[2023-12-25 19:29:50,631 INFO  L78                 Accepts]: Start accepts. Automaton has 9293 states and 15507 transitions. Word has length 6051
[2023-12-25 19:29:50,632 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 19:29:50,633 INFO  L495      AbstractCegarLoop]: Abstraction has 9293 states and 15507 transitions.
[2023-12-25 19:29:50,634 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 1512.75) internal successors, (6051), 4 states have internal predecessors, (6051), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 19:29:50,635 INFO  L276                IsEmpty]: Start isEmpty. Operand 9293 states and 15507 transitions.
[2023-12-25 19:29:50,868 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 6052
[2023-12-25 19:29:50,869 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 19:29:50,872 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-12-25 19:29:50,941 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0
[2023-12-25 19:29:51,100 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 19:29:51,101 INFO  L420      AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 19:29:51,101 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 19:29:51,102 INFO  L85        PathProgramCache]: Analyzing trace with hash 59145914, now seen corresponding path program 1 times
[2023-12-25 19:29:51,103 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 19:29:51,103 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [391536697]
[2023-12-25 19:29:51,103 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 19:29:51,103 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 19:29:51,486 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 19:29:51,487 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1431866654]
[2023-12-25 19:29:51,488 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 19:29:51,488 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 19:29:51,488 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 19:29:51,489 INFO  L229       MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-25 19:29:51,513 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process
[2023-12-25 19:29:57,695 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 19:29:57,890 INFO  L262         TraceCheckSpWp]: Trace formula consists of 26646 conjuncts, 6 conjunts are in the unsatisfiable core
[2023-12-25 19:29:57,975 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 19:29:58,059 INFO  L134       CoverageAnalysis]: Checked inductivity of 546 backedges. 546 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-25 19:29:58,060 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 19:29:58,060 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 19:29:58,060 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [391536697]
[2023-12-25 19:29:58,060 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 19:29:58,060 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1431866654]
[2023-12-25 19:29:58,060 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1431866654] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 19:29:58,060 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 19:29:58,061 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-12-25 19:29:58,061 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [790375197]
[2023-12-25 19:29:58,061 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 19:29:58,065 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-12-25 19:29:58,065 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 19:29:58,069 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-12-25 19:29:58,070 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-12-25 19:29:58,071 INFO  L87              Difference]: Start difference. First operand 9293 states and 15507 transitions. Second operand  has 4 states, 4 states have (on average 1512.75) internal successors, (6051), 4 states have internal predecessors, (6051), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 19:29:58,270 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 19:29:58,270 INFO  L93              Difference]: Finished difference Result 17578 states and 29335 transitions.
[2023-12-25 19:29:58,271 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-12-25 19:29:58,272 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 1512.75) internal successors, (6051), 4 states have internal predecessors, (6051), 0 states have call successors, (0), 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 6051
[2023-12-25 19:29:58,274 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 19:29:58,286 INFO  L225             Difference]: With dead ends: 17578
[2023-12-25 19:29:58,287 INFO  L226             Difference]: Without dead ends: 9302
[2023-12-25 19:29:58,296 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 6050 GetRequests, 6048 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-12-25 19:29:58,297 INFO  L413           NwaCegarLoop]: 14144 mSDtfsCounter, 12 mSDsluCounter, 28278 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 42422 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2023-12-25 19:29:58,297 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 42422 Invalid, 17 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-12-25 19:29:58,307 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 9302 states.
[2023-12-25 19:29:58,388 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 9302 to 9294.
[2023-12-25 19:29:58,399 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 9294 states, 9293 states have (on average 1.6687829549122997) internal successors, (15508), 9293 states have internal predecessors, (15508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 19:29:58,413 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 9294 states to 9294 states and 15508 transitions.
[2023-12-25 19:29:58,414 INFO  L78                 Accepts]: Start accepts. Automaton has 9294 states and 15508 transitions. Word has length 6051
[2023-12-25 19:29:58,415 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 19:29:58,415 INFO  L495      AbstractCegarLoop]: Abstraction has 9294 states and 15508 transitions.
[2023-12-25 19:29:58,417 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 1512.75) internal successors, (6051), 4 states have internal predecessors, (6051), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 19:29:58,417 INFO  L276                IsEmpty]: Start isEmpty. Operand 9294 states and 15508 transitions.
[2023-12-25 19:29:58,698 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 6052
[2023-12-25 19:29:58,699 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 19:29:58,701 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-12-25 19:29:58,775 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 19:29:58,919 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 19:29:58,920 INFO  L420      AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 19:29:58,920 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 19:29:58,922 INFO  L85        PathProgramCache]: Analyzing trace with hash 1481710600, now seen corresponding path program 1 times
[2023-12-25 19:29:58,922 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 19:29:58,922 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1571524805]
[2023-12-25 19:29:58,922 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 19:29:58,922 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 19:29:59,342 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 19:29:59,342 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1174403367]
[2023-12-25 19:29:59,343 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 19:29:59,343 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 19:29:59,343 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 19:29:59,357 INFO  L229       MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-25 19:29:59,401 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process
[2023-12-25 19:30:05,551 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 19:30:05,732 INFO  L262         TraceCheckSpWp]: Trace formula consists of 26647 conjuncts, 6 conjunts are in the unsatisfiable core
[2023-12-25 19:30:05,818 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 19:30:05,905 INFO  L134       CoverageAnalysis]: Checked inductivity of 546 backedges. 546 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-25 19:30:05,905 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 19:30:05,906 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 19:30:05,906 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1571524805]
[2023-12-25 19:30:05,906 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 19:30:05,906 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1174403367]
[2023-12-25 19:30:05,906 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1174403367] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 19:30:05,906 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 19:30:05,906 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-12-25 19:30:05,906 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [570752913]
[2023-12-25 19:30:05,907 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 19:30:05,911 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-12-25 19:30:05,911 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 19:30:05,914 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-12-25 19:30:05,915 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-12-25 19:30:05,916 INFO  L87              Difference]: Start difference. First operand 9294 states and 15508 transitions. Second operand  has 4 states, 4 states have (on average 1512.75) internal successors, (6051), 4 states have internal predecessors, (6051), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 19:30:06,146 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 19:30:06,146 INFO  L93              Difference]: Finished difference Result 17580 states and 29337 transitions.
[2023-12-25 19:30:06,147 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-12-25 19:30:06,148 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 1512.75) internal successors, (6051), 4 states have internal predecessors, (6051), 0 states have call successors, (0), 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 6051
[2023-12-25 19:30:06,150 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 19:30:06,160 INFO  L225             Difference]: With dead ends: 17580
[2023-12-25 19:30:06,160 INFO  L226             Difference]: Without dead ends: 9303
[2023-12-25 19:30:06,170 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 6050 GetRequests, 6048 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-12-25 19:30:06,171 INFO  L413           NwaCegarLoop]: 14144 mSDtfsCounter, 12 mSDsluCounter, 28278 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 42422 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2023-12-25 19:30:06,171 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 42422 Invalid, 17 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-12-25 19:30:06,179 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 9303 states.
[2023-12-25 19:30:06,253 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 9303 to 9295.
[2023-12-25 19:30:06,262 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 9295 states, 9294 states have (on average 1.668710996341726) internal successors, (15509), 9294 states have internal predecessors, (15509), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 19:30:06,275 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 9295 states to 9295 states and 15509 transitions.
[2023-12-25 19:30:06,275 INFO  L78                 Accepts]: Start accepts. Automaton has 9295 states and 15509 transitions. Word has length 6051
[2023-12-25 19:30:06,277 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 19:30:06,277 INFO  L495      AbstractCegarLoop]: Abstraction has 9295 states and 15509 transitions.
[2023-12-25 19:30:06,278 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 1512.75) internal successors, (6051), 4 states have internal predecessors, (6051), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 19:30:06,278 INFO  L276                IsEmpty]: Start isEmpty. Operand 9295 states and 15509 transitions.
[2023-12-25 19:30:06,536 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 6052
[2023-12-25 19:30:06,538 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 19:30:06,540 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-12-25 19:30:06,611 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0
[2023-12-25 19:30:06,756 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 19:30:06,756 INFO  L420      AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 19:30:06,757 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 19:30:06,758 INFO  L85        PathProgramCache]: Analyzing trace with hash 531942742, now seen corresponding path program 1 times
[2023-12-25 19:30:06,758 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 19:30:06,758 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1706998519]
[2023-12-25 19:30:06,759 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 19:30:06,759 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 19:30:07,219 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 19:30:07,219 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [145991597]
[2023-12-25 19:30:07,220 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 19:30:07,220 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 19:30:07,220 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 19:30:07,240 INFO  L229       MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-25 19:30:07,241 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process
[2023-12-25 19:30:13,299 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 19:30:13,479 INFO  L262         TraceCheckSpWp]: Trace formula consists of 26648 conjuncts, 6 conjunts are in the unsatisfiable core
[2023-12-25 19:30:13,545 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 19:30:13,685 INFO  L134       CoverageAnalysis]: Checked inductivity of 546 backedges. 546 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-25 19:30:13,685 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 19:30:13,685 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 19:30:13,685 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1706998519]
[2023-12-25 19:30:13,685 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 19:30:13,685 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [145991597]
[2023-12-25 19:30:13,685 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [145991597] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 19:30:13,685 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 19:30:13,686 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-12-25 19:30:13,686 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1960708494]
[2023-12-25 19:30:13,686 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 19:30:13,690 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-12-25 19:30:13,690 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 19:30:13,694 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-12-25 19:30:13,695 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-12-25 19:30:13,697 INFO  L87              Difference]: Start difference. First operand 9295 states and 15509 transitions. Second operand  has 4 states, 4 states have (on average 1512.75) internal successors, (6051), 4 states have internal predecessors, (6051), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 19:30:13,876 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 19:30:13,876 INFO  L93              Difference]: Finished difference Result 17582 states and 29339 transitions.
[2023-12-25 19:30:13,876 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-12-25 19:30:13,878 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 1512.75) internal successors, (6051), 4 states have internal predecessors, (6051), 0 states have call successors, (0), 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 6051
[2023-12-25 19:30:13,879 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 19:30:13,891 INFO  L225             Difference]: With dead ends: 17582
[2023-12-25 19:30:13,892 INFO  L226             Difference]: Without dead ends: 9304
[2023-12-25 19:30:13,900 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 6050 GetRequests, 6048 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-12-25 19:30:13,901 INFO  L413           NwaCegarLoop]: 14144 mSDtfsCounter, 12 mSDsluCounter, 28278 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 42422 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2023-12-25 19:30:13,901 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 42422 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-12-25 19:30:13,911 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 9304 states.
[2023-12-25 19:30:13,992 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 9304 to 9296.
[2023-12-25 19:30:14,002 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 9296 states, 9295 states have (on average 1.668639053254438) internal successors, (15510), 9295 states have internal predecessors, (15510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 19:30:14,018 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 9296 states to 9296 states and 15510 transitions.
[2023-12-25 19:30:14,019 INFO  L78                 Accepts]: Start accepts. Automaton has 9296 states and 15510 transitions. Word has length 6051
[2023-12-25 19:30:14,025 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 19:30:14,025 INFO  L495      AbstractCegarLoop]: Abstraction has 9296 states and 15510 transitions.
[2023-12-25 19:30:14,026 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 1512.75) internal successors, (6051), 4 states have internal predecessors, (6051), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 19:30:14,026 INFO  L276                IsEmpty]: Start isEmpty. Operand 9296 states and 15510 transitions.
[2023-12-25 19:30:14,269 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 6052
[2023-12-25 19:30:14,269 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 19:30:14,272 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-12-25 19:30:14,356 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0
[2023-12-25 19:30:14,476 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 19:30:14,477 INFO  L420      AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 19:30:14,477 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 19:30:14,478 INFO  L85        PathProgramCache]: Analyzing trace with hash 1833948324, now seen corresponding path program 1 times
[2023-12-25 19:30:14,478 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 19:30:14,479 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2057350875]
[2023-12-25 19:30:14,479 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 19:30:14,479 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 19:30:14,896 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 19:30:14,896 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [362062867]
[2023-12-25 19:30:14,897 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 19:30:14,898 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 19:30:14,898 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 19:30:14,919 INFO  L229       MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-25 19:30:14,970 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process
[2023-12-25 19:30:20,987 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 19:30:21,169 INFO  L262         TraceCheckSpWp]: Trace formula consists of 26649 conjuncts, 6 conjunts are in the unsatisfiable core
[2023-12-25 19:30:21,228 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 19:30:21,306 INFO  L134       CoverageAnalysis]: Checked inductivity of 546 backedges. 546 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-25 19:30:21,307 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 19:30:21,307 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 19:30:21,307 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2057350875]
[2023-12-25 19:30:21,307 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 19:30:21,307 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [362062867]
[2023-12-25 19:30:21,307 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [362062867] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 19:30:21,307 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 19:30:21,308 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-12-25 19:30:21,308 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1553346098]
[2023-12-25 19:30:21,308 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 19:30:21,312 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-12-25 19:30:21,312 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 19:30:21,316 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-12-25 19:30:21,316 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-12-25 19:30:21,317 INFO  L87              Difference]: Start difference. First operand 9296 states and 15510 transitions. Second operand  has 4 states, 4 states have (on average 1512.75) internal successors, (6051), 4 states have internal predecessors, (6051), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 19:30:21,468 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 19:30:21,468 INFO  L93              Difference]: Finished difference Result 17584 states and 29341 transitions.
[2023-12-25 19:30:21,469 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-12-25 19:30:21,470 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 1512.75) internal successors, (6051), 4 states have internal predecessors, (6051), 0 states have call successors, (0), 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 6051
[2023-12-25 19:30:21,472 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 19:30:21,483 INFO  L225             Difference]: With dead ends: 17584
[2023-12-25 19:30:21,483 INFO  L226             Difference]: Without dead ends: 9305
[2023-12-25 19:30:21,491 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 6050 GetRequests, 6048 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-12-25 19:30:21,491 INFO  L413           NwaCegarLoop]: 14144 mSDtfsCounter, 12 mSDsluCounter, 28278 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 42422 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2023-12-25 19:30:21,491 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 42422 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-12-25 19:30:21,499 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 9305 states.
[2023-12-25 19:30:21,569 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 9305 to 9297.
[2023-12-25 19:30:21,578 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 9297 states, 9296 states have (on average 1.6685671256454389) internal successors, (15511), 9296 states have internal predecessors, (15511), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 19:30:21,588 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 9297 states to 9297 states and 15511 transitions.
[2023-12-25 19:30:21,588 INFO  L78                 Accepts]: Start accepts. Automaton has 9297 states and 15511 transitions. Word has length 6051
[2023-12-25 19:30:21,591 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 19:30:21,591 INFO  L495      AbstractCegarLoop]: Abstraction has 9297 states and 15511 transitions.
[2023-12-25 19:30:21,592 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 1512.75) internal successors, (6051), 4 states have internal predecessors, (6051), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 19:30:21,592 INFO  L276                IsEmpty]: Start isEmpty. Operand 9297 states and 15511 transitions.
[2023-12-25 19:30:21,842 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 6052
[2023-12-25 19:30:21,842 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 19:30:21,844 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-12-25 19:30:21,918 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0
[2023-12-25 19:30:22,064 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 19:30:22,064 INFO  L420      AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 19:30:22,065 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 19:30:22,066 INFO  L85        PathProgramCache]: Analyzing trace with hash -299768334, now seen corresponding path program 1 times
[2023-12-25 19:30:22,066 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 19:30:22,066 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1406731812]
[2023-12-25 19:30:22,067 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 19:30:22,067 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 19:30:22,543 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 19:30:22,543 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [197046180]
[2023-12-25 19:30:22,544 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 19:30:22,544 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 19:30:22,545 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 19:30:22,566 INFO  L229       MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-25 19:30:22,589 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process
[2023-12-25 19:30:28,824 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 19:30:29,017 INFO  L262         TraceCheckSpWp]: Trace formula consists of 26650 conjuncts, 6 conjunts are in the unsatisfiable core
[2023-12-25 19:30:29,082 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 19:30:29,156 INFO  L134       CoverageAnalysis]: Checked inductivity of 546 backedges. 546 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-25 19:30:29,156 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 19:30:29,156 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 19:30:29,156 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1406731812]
[2023-12-25 19:30:29,157 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 19:30:29,157 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [197046180]
[2023-12-25 19:30:29,157 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [197046180] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 19:30:29,157 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 19:30:29,157 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-12-25 19:30:29,157 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [165093575]
[2023-12-25 19:30:29,157 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 19:30:29,161 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-12-25 19:30:29,161 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 19:30:29,166 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-12-25 19:30:29,166 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-12-25 19:30:29,167 INFO  L87              Difference]: Start difference. First operand 9297 states and 15511 transitions. Second operand  has 4 states, 4 states have (on average 1512.75) internal successors, (6051), 4 states have internal predecessors, (6051), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 19:30:29,359 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 19:30:29,359 INFO  L93              Difference]: Finished difference Result 17586 states and 29343 transitions.
[2023-12-25 19:30:29,359 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-12-25 19:30:29,360 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 1512.75) internal successors, (6051), 4 states have internal predecessors, (6051), 0 states have call successors, (0), 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 6051
[2023-12-25 19:30:29,362 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 19:30:29,373 INFO  L225             Difference]: With dead ends: 17586
[2023-12-25 19:30:29,373 INFO  L226             Difference]: Without dead ends: 9306
[2023-12-25 19:30:29,380 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 6050 GetRequests, 6048 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-12-25 19:30:29,380 INFO  L413           NwaCegarLoop]: 14144 mSDtfsCounter, 12 mSDsluCounter, 28278 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 42422 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-12-25 19:30:29,380 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 42422 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-12-25 19:30:29,390 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 9306 states.
[2023-12-25 19:30:29,467 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 9306 to 9298.
[2023-12-25 19:30:29,476 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 9298 states, 9297 states have (on average 1.6684952135097344) internal successors, (15512), 9297 states have internal predecessors, (15512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 19:30:29,489 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 9298 states to 9298 states and 15512 transitions.
[2023-12-25 19:30:29,489 INFO  L78                 Accepts]: Start accepts. Automaton has 9298 states and 15512 transitions. Word has length 6051
[2023-12-25 19:30:29,491 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 19:30:29,491 INFO  L495      AbstractCegarLoop]: Abstraction has 9298 states and 15512 transitions.
[2023-12-25 19:30:29,492 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 1512.75) internal successors, (6051), 4 states have internal predecessors, (6051), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 19:30:29,492 INFO  L276                IsEmpty]: Start isEmpty. Operand 9298 states and 15512 transitions.
[2023-12-25 19:30:29,720 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 6052
[2023-12-25 19:30:29,720 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 19:30:29,722 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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[2023-12-25 19:30:29,793 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0
[2023-12-25 19:30:29,948 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,SelfDestructingSolverStorable10
[2023-12-25 19:30:29,949 INFO  L420      AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 19:30:29,949 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 19:30:29,950 INFO  L85        PathProgramCache]: Analyzing trace with hash -1580922048, now seen corresponding path program 1 times
[2023-12-25 19:30:29,950 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 19:30:29,951 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1742080469]
[2023-12-25 19:30:29,951 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 19:30:29,951 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 19:30:30,354 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 19:30:30,354 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1201283474]
[2023-12-25 19:30:30,355 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 19:30:30,355 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 19:30:30,355 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 19:30:30,356 INFO  L229       MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-25 19:30:30,358 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process
[2023-12-25 19:30:36,457 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 19:30:36,639 INFO  L262         TraceCheckSpWp]: Trace formula consists of 26651 conjuncts, 6 conjunts are in the unsatisfiable core
[2023-12-25 19:30:36,704 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 19:30:36,799 INFO  L134       CoverageAnalysis]: Checked inductivity of 546 backedges. 546 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-25 19:30:36,800 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 19:30:36,800 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 19:30:36,800 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1742080469]
[2023-12-25 19:30:36,800 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 19:30:36,800 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1201283474]
[2023-12-25 19:30:36,800 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1201283474] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 19:30:36,800 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 19:30:36,801 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-12-25 19:30:36,801 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [162121224]
[2023-12-25 19:30:36,801 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 19:30:36,805 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-12-25 19:30:36,805 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 19:30:36,808 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-12-25 19:30:36,809 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-12-25 19:30:36,809 INFO  L87              Difference]: Start difference. First operand 9298 states and 15512 transitions. Second operand  has 4 states, 4 states have (on average 1512.75) internal successors, (6051), 4 states have internal predecessors, (6051), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 19:30:36,952 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 19:30:36,953 INFO  L93              Difference]: Finished difference Result 17588 states and 29345 transitions.
[2023-12-25 19:30:36,953 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-12-25 19:30:36,955 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 1512.75) internal successors, (6051), 4 states have internal predecessors, (6051), 0 states have call successors, (0), 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 6051
[2023-12-25 19:30:36,956 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 19:30:36,966 INFO  L225             Difference]: With dead ends: 17588
[2023-12-25 19:30:36,966 INFO  L226             Difference]: Without dead ends: 9307
[2023-12-25 19:30:36,974 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 6050 GetRequests, 6048 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-12-25 19:30:36,975 INFO  L413           NwaCegarLoop]: 14144 mSDtfsCounter, 12 mSDsluCounter, 28278 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 42422 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2023-12-25 19:30:36,975 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 42422 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-12-25 19:30:36,985 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 9307 states.
[2023-12-25 19:30:37,060 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 9307 to 9299.
[2023-12-25 19:30:37,070 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 9299 states, 9298 states have (on average 1.6684233168423317) internal successors, (15513), 9298 states have internal predecessors, (15513), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 19:30:37,228 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 9299 states to 9299 states and 15513 transitions.
[2023-12-25 19:30:37,229 INFO  L78                 Accepts]: Start accepts. Automaton has 9299 states and 15513 transitions. Word has length 6051
[2023-12-25 19:30:37,230 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 19:30:37,230 INFO  L495      AbstractCegarLoop]: Abstraction has 9299 states and 15513 transitions.
[2023-12-25 19:30:37,231 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 1512.75) internal successors, (6051), 4 states have internal predecessors, (6051), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 19:30:37,231 INFO  L276                IsEmpty]: Start isEmpty. Operand 9299 states and 15513 transitions.
[2023-12-25 19:30:37,472 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 6052
[2023-12-25 19:30:37,472 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 19:30:37,475 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-12-25 19:30:37,556 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0
[2023-12-25 19:30:37,688 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 19:30:37,688 INFO  L420      AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 19:30:37,689 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 19:30:37,690 INFO  L85        PathProgramCache]: Analyzing trace with hash 1955577742, now seen corresponding path program 1 times
[2023-12-25 19:30:37,690 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 19:30:37,691 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [149676630]
[2023-12-25 19:30:37,691 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 19:30:37,691 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 19:30:38,068 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 19:30:38,068 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [219874692]
[2023-12-25 19:30:38,070 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 19:30:38,070 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 19:30:38,070 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 19:30:38,071 INFO  L229       MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-25 19:30:38,096 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process
[2023-12-25 19:30:44,192 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 19:30:44,350 INFO  L262         TraceCheckSpWp]: Trace formula consists of 26652 conjuncts, 6 conjunts are in the unsatisfiable core
[2023-12-25 19:30:44,406 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 19:30:44,483 INFO  L134       CoverageAnalysis]: Checked inductivity of 546 backedges. 546 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-25 19:30:44,483 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 19:30:44,484 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 19:30:44,484 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [149676630]
[2023-12-25 19:30:44,484 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 19:30:44,484 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [219874692]
[2023-12-25 19:30:44,484 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [219874692] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 19:30:44,484 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 19:30:44,484 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-12-25 19:30:44,484 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1851244361]
[2023-12-25 19:30:44,485 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 19:30:44,490 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-12-25 19:30:44,490 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 19:30:44,498 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-12-25 19:30:44,498 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-12-25 19:30:44,499 INFO  L87              Difference]: Start difference. First operand 9299 states and 15513 transitions. Second operand  has 4 states, 4 states have (on average 1512.75) internal successors, (6051), 4 states have internal predecessors, (6051), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 19:30:44,639 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 19:30:44,640 INFO  L93              Difference]: Finished difference Result 17590 states and 29347 transitions.
[2023-12-25 19:30:44,640 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-12-25 19:30:44,641 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 1512.75) internal successors, (6051), 4 states have internal predecessors, (6051), 0 states have call successors, (0), 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 6051
[2023-12-25 19:30:44,643 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 19:30:44,650 INFO  L225             Difference]: With dead ends: 17590
[2023-12-25 19:30:44,650 INFO  L226             Difference]: Without dead ends: 9308
[2023-12-25 19:30:44,659 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 6050 GetRequests, 6048 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-12-25 19:30:44,660 INFO  L413           NwaCegarLoop]: 14144 mSDtfsCounter, 12 mSDsluCounter, 28278 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 42422 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2023-12-25 19:30:44,661 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 42422 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-12-25 19:30:44,671 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 9308 states.
[2023-12-25 19:30:44,731 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 9308 to 9300.
[2023-12-25 19:30:44,739 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 9300 states, 9299 states have (on average 1.6683514356382407) internal successors, (15514), 9299 states have internal predecessors, (15514), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 19:30:44,748 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 9300 states to 9300 states and 15514 transitions.
[2023-12-25 19:30:44,748 INFO  L78                 Accepts]: Start accepts. Automaton has 9300 states and 15514 transitions. Word has length 6051
[2023-12-25 19:30:44,749 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 19:30:44,749 INFO  L495      AbstractCegarLoop]: Abstraction has 9300 states and 15514 transitions.
[2023-12-25 19:30:44,750 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 1512.75) internal successors, (6051), 4 states have internal predecessors, (6051), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 19:30:44,751 INFO  L276                IsEmpty]: Start isEmpty. Operand 9300 states and 15514 transitions.
[2023-12-25 19:30:45,033 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 6052
[2023-12-25 19:30:45,034 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 19:30:45,035 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-12-25 19:30:45,105 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0
[2023-12-25 19:30:45,246 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,SelfDestructingSolverStorable12
[2023-12-25 19:30:45,247 INFO  L420      AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 19:30:45,247 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 19:30:45,248 INFO  L85        PathProgramCache]: Analyzing trace with hash 797850332, now seen corresponding path program 1 times
[2023-12-25 19:30:45,248 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 19:30:45,248 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1826621818]
[2023-12-25 19:30:45,249 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 19:30:45,249 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 19:30:45,688 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 19:30:45,688 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1188183418]
[2023-12-25 19:30:45,689 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 19:30:45,689 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 19:30:45,689 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 19:30:45,690 INFO  L229       MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-25 19:30:45,710 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process
[2023-12-25 19:30:51,863 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 19:30:52,049 INFO  L262         TraceCheckSpWp]: Trace formula consists of 26653 conjuncts, 6 conjunts are in the unsatisfiable core
[2023-12-25 19:30:52,171 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 19:30:52,237 INFO  L134       CoverageAnalysis]: Checked inductivity of 546 backedges. 546 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-25 19:30:52,238 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 19:30:52,238 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 19:30:52,239 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1826621818]
[2023-12-25 19:30:52,239 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 19:30:52,239 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1188183418]
[2023-12-25 19:30:52,239 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1188183418] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 19:30:52,239 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 19:30:52,239 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-12-25 19:30:52,239 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1313742151]
[2023-12-25 19:30:52,240 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 19:30:52,244 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-12-25 19:30:52,244 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 19:30:52,247 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-12-25 19:30:52,247 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-12-25 19:30:52,248 INFO  L87              Difference]: Start difference. First operand 9300 states and 15514 transitions. Second operand  has 4 states, 4 states have (on average 1512.75) internal successors, (6051), 4 states have internal predecessors, (6051), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 19:30:52,399 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 19:30:52,399 INFO  L93              Difference]: Finished difference Result 17592 states and 29349 transitions.
[2023-12-25 19:30:52,400 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-12-25 19:30:52,401 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 1512.75) internal successors, (6051), 4 states have internal predecessors, (6051), 0 states have call successors, (0), 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 6051
[2023-12-25 19:30:52,403 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 19:30:52,411 INFO  L225             Difference]: With dead ends: 17592
[2023-12-25 19:30:52,411 INFO  L226             Difference]: Without dead ends: 9309
[2023-12-25 19:30:52,419 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 6050 GetRequests, 6048 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-12-25 19:30:52,422 INFO  L413           NwaCegarLoop]: 14144 mSDtfsCounter, 12 mSDsluCounter, 28278 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 42422 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2023-12-25 19:30:52,423 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 42422 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-12-25 19:30:52,431 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 9309 states.
[2023-12-25 19:30:52,653 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 9309 to 9301.
[2023-12-25 19:30:52,662 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 9301 states, 9300 states have (on average 1.668279569892473) internal successors, (15515), 9300 states have internal predecessors, (15515), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 19:30:52,674 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 9301 states to 9301 states and 15515 transitions.
[2023-12-25 19:30:52,675 INFO  L78                 Accepts]: Start accepts. Automaton has 9301 states and 15515 transitions. Word has length 6051
[2023-12-25 19:30:52,676 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 19:30:52,676 INFO  L495      AbstractCegarLoop]: Abstraction has 9301 states and 15515 transitions.
[2023-12-25 19:30:52,677 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 1512.75) internal successors, (6051), 4 states have internal predecessors, (6051), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 19:30:52,677 INFO  L276                IsEmpty]: Start isEmpty. Operand 9301 states and 15515 transitions.
[2023-12-25 19:30:52,921 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 6052
[2023-12-25 19:30:52,922 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 19:30:52,923 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-12-25 19:30:52,996 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0
[2023-12-25 19:30:53,136 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,SelfDestructingSolverStorable13
[2023-12-25 19:30:53,136 INFO  L420      AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 19:30:53,137 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 19:30:53,138 INFO  L85        PathProgramCache]: Analyzing trace with hash 2016196906, now seen corresponding path program 1 times
[2023-12-25 19:30:53,138 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 19:30:53,138 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [328965598]
[2023-12-25 19:30:53,138 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 19:30:53,138 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 19:30:53,538 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 19:30:53,539 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1360947238]
[2023-12-25 19:30:53,540 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 19:30:53,540 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 19:30:53,540 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 19:30:53,541 INFO  L229       MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-25 19:30:53,543 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process
[2023-12-25 19:30:59,902 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 19:31:00,077 INFO  L262         TraceCheckSpWp]: Trace formula consists of 26654 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-12-25 19:31:00,154 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 19:31:00,854 INFO  L134       CoverageAnalysis]: Checked inductivity of 546 backedges. 6 proven. 507 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked.
[2023-12-25 19:31:00,854 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-12-25 19:31:00,989 INFO  L134       CoverageAnalysis]: Checked inductivity of 546 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 540 trivial. 0 not checked.
[2023-12-25 19:31:00,989 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 19:31:00,989 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [328965598]
[2023-12-25 19:31:00,990 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 19:31:00,990 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1360947238]
[2023-12-25 19:31:00,990 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1360947238] provided 1 perfect and 1 imperfect interpolant sequences
[2023-12-25 19:31:00,990 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2023-12-25 19:31:00,991 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8] total 12
[2023-12-25 19:31:00,991 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [959135869]
[2023-12-25 19:31:00,991 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 19:31:00,995 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2023-12-25 19:31:00,995 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 19:31:00,997 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2023-12-25 19:31:00,997 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132
[2023-12-25 19:31:00,998 INFO  L87              Difference]: Start difference. First operand 9301 states and 15515 transitions. Second operand  has 6 states, 6 states have (on average 918.6666666666666) internal successors, (5512), 6 states have internal predecessors, (5512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 19:31:14,410 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 19:31:14,410 INFO  L93              Difference]: Finished difference Result 41777 states and 69489 transitions.
[2023-12-25 19:31:14,410 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. 
[2023-12-25 19:31:14,412 INFO  L78                 Accepts]: Start accepts. Automaton has  has 6 states, 6 states have (on average 918.6666666666666) internal successors, (5512), 6 states have internal predecessors, (5512), 0 states have call successors, (0), 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 6051
[2023-12-25 19:31:14,415 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 19:31:14,433 INFO  L225             Difference]: With dead ends: 41777
[2023-12-25 19:31:14,433 INFO  L226             Difference]: Without dead ends: 25862
[2023-12-25 19:31:14,473 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 12102 GetRequests, 12090 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182
[2023-12-25 19:31:14,475 INFO  L413           NwaCegarLoop]: 24108 mSDtfsCounter, 63161 mSDsluCounter, 57623 mSDsCounter, 0 mSdLazyCounter, 20316 mSolverCounterSat, 651 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63161 SdHoareTripleChecker+Valid, 81731 SdHoareTripleChecker+Invalid, 20967 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 651 IncrementalHoareTripleChecker+Valid, 20316 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.6s IncrementalHoareTripleChecker+Time
[2023-12-25 19:31:14,475 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [63161 Valid, 81731 Invalid, 20967 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [651 Valid, 20316 Invalid, 0 Unknown, 0 Unchecked, 12.6s Time]
[2023-12-25 19:31:14,494 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 25862 states.
[2023-12-25 19:31:14,711 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 25862 to 9301.
[2023-12-25 19:31:14,720 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 9301 states, 9300 states have (on average 1.668279569892473) internal successors, (15515), 9300 states have internal predecessors, (15515), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 19:31:14,730 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 9301 states to 9301 states and 15515 transitions.
[2023-12-25 19:31:14,730 INFO  L78                 Accepts]: Start accepts. Automaton has 9301 states and 15515 transitions. Word has length 6051
[2023-12-25 19:31:14,733 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 19:31:14,733 INFO  L495      AbstractCegarLoop]: Abstraction has 9301 states and 15515 transitions.
[2023-12-25 19:31:14,734 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 6 states, 6 states have (on average 918.6666666666666) internal successors, (5512), 6 states have internal predecessors, (5512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 19:31:14,734 INFO  L276                IsEmpty]: Start isEmpty. Operand 9301 states and 15515 transitions.
[2023-12-25 19:31:14,962 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 6053
[2023-12-25 19:31:14,962 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 19:31:14,963 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-12-25 19:31:15,039 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0
[2023-12-25 19:31:15,176 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,SelfDestructingSolverStorable14
[2023-12-25 19:31:15,176 INFO  L420      AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 19:31:15,177 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 19:31:15,178 INFO  L85        PathProgramCache]: Analyzing trace with hash -715521512, now seen corresponding path program 1 times
[2023-12-25 19:31:15,178 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 19:31:15,178 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [995771427]
[2023-12-25 19:31:15,178 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 19:31:15,178 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 19:31:15,567 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 19:31:15,567 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1430944689]
[2023-12-25 19:31:15,568 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 19:31:15,569 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 19:31:15,569 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 19:31:15,570 INFO  L229       MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-25 19:31:15,571 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process
[2023-12-25 19:31:21,967 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 19:31:22,149 INFO  L262         TraceCheckSpWp]: Trace formula consists of 26658 conjuncts, 17 conjunts are in the unsatisfiable core
[2023-12-25 19:31:22,211 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 19:31:22,823 INFO  L134       CoverageAnalysis]: Checked inductivity of 546 backedges. 8 proven. 507 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked.
[2023-12-25 19:31:22,824 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-12-25 19:31:22,974 INFO  L134       CoverageAnalysis]: Checked inductivity of 546 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 538 trivial. 0 not checked.
[2023-12-25 19:31:22,975 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 19:31:22,975 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [995771427]
[2023-12-25 19:31:22,975 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 19:31:22,975 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1430944689]
[2023-12-25 19:31:22,976 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1430944689] provided 1 perfect and 1 imperfect interpolant sequences
[2023-12-25 19:31:22,976 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2023-12-25 19:31:22,977 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10
[2023-12-25 19:31:22,977 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1271719744]
[2023-12-25 19:31:22,977 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 19:31:22,980 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-12-25 19:31:22,980 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 19:31:22,982 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-12-25 19:31:22,983 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90
[2023-12-25 19:31:22,983 INFO  L87              Difference]: Start difference. First operand 9301 states and 15515 transitions. Second operand  has 5 states, 5 states have (on average 1103.0) internal successors, (5515), 5 states have internal predecessors, (5515), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 19:31:31,194 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 19:31:31,194 INFO  L93              Difference]: Finished difference Result 33500 states and 55676 transitions.
[2023-12-25 19:31:31,194 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2023-12-25 19:31:31,195 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 1103.0) internal successors, (5515), 5 states have internal predecessors, (5515), 0 states have call successors, (0), 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 6052
[2023-12-25 19:31:31,199 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 19:31:31,217 INFO  L225             Difference]: With dead ends: 33500
[2023-12-25 19:31:31,217 INFO  L226             Difference]: Without dead ends: 17580
[2023-12-25 19:31:31,226 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 12103 GetRequests, 12094 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110
[2023-12-25 19:31:31,227 INFO  L413           NwaCegarLoop]: 24098 mSDtfsCounter, 25645 mSDsluCounter, 35209 mSDsCounter, 0 mSdLazyCounter, 13170 mSolverCounterSat, 648 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25645 SdHoareTripleChecker+Valid, 59307 SdHoareTripleChecker+Invalid, 13818 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 648 IncrementalHoareTripleChecker+Valid, 13170 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.7s IncrementalHoareTripleChecker+Time
[2023-12-25 19:31:31,227 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [25645 Valid, 59307 Invalid, 13818 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [648 Valid, 13170 Invalid, 0 Unknown, 0 Unchecked, 7.7s Time]
[2023-12-25 19:31:31,240 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 17580 states.
[2023-12-25 19:31:31,341 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 17580 to 9303.
[2023-12-25 19:31:31,351 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 9303 states, 9302 states have (on average 1.6681358847559664) internal successors, (15517), 9302 states have internal predecessors, (15517), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 19:31:31,361 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 9303 states to 9303 states and 15517 transitions.
[2023-12-25 19:31:31,361 INFO  L78                 Accepts]: Start accepts. Automaton has 9303 states and 15517 transitions. Word has length 6052
[2023-12-25 19:31:31,364 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 19:31:31,364 INFO  L495      AbstractCegarLoop]: Abstraction has 9303 states and 15517 transitions.
[2023-12-25 19:31:31,365 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 1103.0) internal successors, (5515), 5 states have internal predecessors, (5515), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 19:31:31,365 INFO  L276                IsEmpty]: Start isEmpty. Operand 9303 states and 15517 transitions.
[2023-12-25 19:31:31,579 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 6054
[2023-12-25 19:31:31,580 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 19:31:31,581 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-12-25 19:31:31,664 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0
[2023-12-25 19:31:31,808 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,SelfDestructingSolverStorable15
[2023-12-25 19:31:31,808 INFO  L420      AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 19:31:31,809 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 19:31:31,810 INFO  L85        PathProgramCache]: Analyzing trace with hash -288607742, now seen corresponding path program 1 times
[2023-12-25 19:31:31,810 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 19:31:31,810 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [206460772]
[2023-12-25 19:31:31,811 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 19:31:31,811 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 19:31:32,178 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 19:31:32,178 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1737022191]
[2023-12-25 19:31:32,179 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 19:31:32,179 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 19:31:32,180 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 19:31:32,181 INFO  L229       MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-25 19:31:32,197 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process
[2023-12-25 19:31:38,197 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 19:31:38,392 INFO  L262         TraceCheckSpWp]: Trace formula consists of 26661 conjuncts, 17 conjunts are in the unsatisfiable core
[2023-12-25 19:31:38,634 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 19:31:39,076 INFO  L134       CoverageAnalysis]: Checked inductivity of 546 backedges. 10 proven. 507 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked.
[2023-12-25 19:31:39,077 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-12-25 19:31:39,172 INFO  L134       CoverageAnalysis]: Checked inductivity of 546 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 536 trivial. 0 not checked.
[2023-12-25 19:31:39,172 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 19:31:39,172 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [206460772]
[2023-12-25 19:31:39,172 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 19:31:39,172 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1737022191]
[2023-12-25 19:31:39,172 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1737022191] provided 1 perfect and 1 imperfect interpolant sequences
[2023-12-25 19:31:39,172 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2023-12-25 19:31:39,173 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10
[2023-12-25 19:31:39,173 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2433631]
[2023-12-25 19:31:39,173 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 19:31:39,177 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-12-25 19:31:39,177 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 19:31:39,180 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-12-25 19:31:39,180 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90
[2023-12-25 19:31:39,181 INFO  L87              Difference]: Start difference. First operand 9303 states and 15517 transitions. Second operand  has 5 states, 5 states have (on average 1103.6) internal successors, (5518), 5 states have internal predecessors, (5518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 19:31:45,946 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 19:31:45,947 INFO  L93              Difference]: Finished difference Result 33508 states and 55684 transitions.
[2023-12-25 19:31:45,947 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2023-12-25 19:31:45,948 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 1103.6) internal successors, (5518), 5 states have internal predecessors, (5518), 0 states have call successors, (0), 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 6053
[2023-12-25 19:31:45,952 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 19:31:46,084 INFO  L225             Difference]: With dead ends: 33508
[2023-12-25 19:31:46,084 INFO  L226             Difference]: Without dead ends: 17581
[2023-12-25 19:31:46,091 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 12105 GetRequests, 12096 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110
[2023-12-25 19:31:46,091 INFO  L413           NwaCegarLoop]: 24090 mSDtfsCounter, 25639 mSDsluCounter, 35199 mSDsCounter, 0 mSdLazyCounter, 13170 mSolverCounterSat, 648 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25639 SdHoareTripleChecker+Valid, 59289 SdHoareTripleChecker+Invalid, 13818 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 648 IncrementalHoareTripleChecker+Valid, 13170 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.4s IncrementalHoareTripleChecker+Time
[2023-12-25 19:31:46,091 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [25639 Valid, 59289 Invalid, 13818 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [648 Valid, 13170 Invalid, 0 Unknown, 0 Unchecked, 6.4s Time]
[2023-12-25 19:31:46,099 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 17581 states.
[2023-12-25 19:31:46,259 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 17581 to 9305.
[2023-12-25 19:31:46,268 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 9305 states, 9304 states have (on average 1.6679922613929492) internal successors, (15519), 9304 states have internal predecessors, (15519), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 19:31:46,277 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 9305 states to 9305 states and 15519 transitions.
[2023-12-25 19:31:46,278 INFO  L78                 Accepts]: Start accepts. Automaton has 9305 states and 15519 transitions. Word has length 6053
[2023-12-25 19:31:46,280 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 19:31:46,280 INFO  L495      AbstractCegarLoop]: Abstraction has 9305 states and 15519 transitions.
[2023-12-25 19:31:46,281 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 1103.6) internal successors, (5518), 5 states have internal predecessors, (5518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 19:31:46,281 INFO  L276                IsEmpty]: Start isEmpty. Operand 9305 states and 15519 transitions.
[2023-12-25 19:31:46,457 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 6055
[2023-12-25 19:31:46,457 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 19:31:46,459 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 19:31:46,552 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 19:31:46,672 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 19:31:46,672 INFO  L420      AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 19:31:46,673 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 19:31:46,674 INFO  L85        PathProgramCache]: Analyzing trace with hash -200392578, now seen corresponding path program 1 times
[2023-12-25 19:31:46,674 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 19:31:46,674 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2028860544]
[2023-12-25 19:31:46,674 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 19:31:46,674 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 19:31:47,194 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 19:31:47,194 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [614896091]
[2023-12-25 19:31:47,195 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 19:31:47,196 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 19:31:47,196 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 19:31:47,197 INFO  L229       MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-25 19:31:47,220 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process
[2023-12-25 19:31:53,517 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 19:31:53,686 INFO  L262         TraceCheckSpWp]: Trace formula consists of 26664 conjuncts, 17 conjunts are in the unsatisfiable core
[2023-12-25 19:31:53,743 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 19:31:54,292 INFO  L134       CoverageAnalysis]: Checked inductivity of 546 backedges. 12 proven. 507 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked.
[2023-12-25 19:31:54,292 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-12-25 19:31:54,390 INFO  L134       CoverageAnalysis]: Checked inductivity of 546 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 534 trivial. 0 not checked.
[2023-12-25 19:31:54,390 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 19:31:54,390 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2028860544]
[2023-12-25 19:31:54,390 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 19:31:54,390 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [614896091]
[2023-12-25 19:31:54,390 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [614896091] provided 1 perfect and 1 imperfect interpolant sequences
[2023-12-25 19:31:54,390 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2023-12-25 19:31:54,391 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10
[2023-12-25 19:31:54,391 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [407098781]
[2023-12-25 19:31:54,391 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 19:31:54,397 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-12-25 19:31:54,397 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 19:31:54,399 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-12-25 19:31:54,399 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90
[2023-12-25 19:31:54,400 INFO  L87              Difference]: Start difference. First operand 9305 states and 15519 transitions. Second operand  has 5 states, 5 states have (on average 1104.2) internal successors, (5521), 5 states have internal predecessors, (5521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 19:32:00,941 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 19:32:00,941 INFO  L93              Difference]: Finished difference Result 33516 states and 55692 transitions.
[2023-12-25 19:32:00,941 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2023-12-25 19:32:00,942 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 1104.2) internal successors, (5521), 5 states have internal predecessors, (5521), 0 states have call successors, (0), 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 6054
[2023-12-25 19:32:00,947 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 19:32:00,967 INFO  L225             Difference]: With dead ends: 33516
[2023-12-25 19:32:00,967 INFO  L226             Difference]: Without dead ends: 17582
[2023-12-25 19:32:00,981 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 12107 GetRequests, 12098 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110
[2023-12-25 19:32:00,981 INFO  L413           NwaCegarLoop]: 24082 mSDtfsCounter, 25633 mSDsluCounter, 35189 mSDsCounter, 0 mSdLazyCounter, 13170 mSolverCounterSat, 648 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25633 SdHoareTripleChecker+Valid, 59271 SdHoareTripleChecker+Invalid, 13818 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 648 IncrementalHoareTripleChecker+Valid, 13170 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.2s IncrementalHoareTripleChecker+Time
[2023-12-25 19:32:00,981 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [25633 Valid, 59271 Invalid, 13818 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [648 Valid, 13170 Invalid, 0 Unknown, 0 Unchecked, 6.2s Time]
[2023-12-25 19:32:00,996 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 17582 states.
[2023-12-25 19:32:01,094 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 17582 to 9307.
[2023-12-25 19:32:01,103 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 9307 states, 9306 states have (on average 1.6678486997635933) internal successors, (15521), 9306 states have internal predecessors, (15521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 19:32:01,113 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 9307 states to 9307 states and 15521 transitions.
[2023-12-25 19:32:01,113 INFO  L78                 Accepts]: Start accepts. Automaton has 9307 states and 15521 transitions. Word has length 6054
[2023-12-25 19:32:01,116 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 19:32:01,116 INFO  L495      AbstractCegarLoop]: Abstraction has 9307 states and 15521 transitions.
[2023-12-25 19:32:01,117 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 1104.2) internal successors, (5521), 5 states have internal predecessors, (5521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 19:32:01,117 INFO  L276                IsEmpty]: Start isEmpty. Operand 9307 states and 15521 transitions.
[2023-12-25 19:32:01,344 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 6056
[2023-12-25 19:32:01,344 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 19:32:01,346 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-12-25 19:32:01,424 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0
[2023-12-25 19:32:01,572 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17
[2023-12-25 19:32:01,573 INFO  L420      AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 19:32:01,574 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 19:32:01,574 INFO  L85        PathProgramCache]: Analyzing trace with hash -981637476, now seen corresponding path program 1 times
[2023-12-25 19:32:01,575 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 19:32:01,575 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1436687832]
[2023-12-25 19:32:01,575 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 19:32:01,575 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 19:32:01,937 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 19:32:01,937 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1126145601]
[2023-12-25 19:32:01,938 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 19:32:01,938 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 19:32:01,939 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 19:32:01,939 INFO  L229       MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-25 19:32:01,942 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process
[2023-12-25 19:32:08,242 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 19:32:08,432 INFO  L262         TraceCheckSpWp]: Trace formula consists of 26667 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-12-25 19:32:08,498 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 19:32:09,324 INFO  L134       CoverageAnalysis]: Checked inductivity of 546 backedges. 14 proven. 507 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked.
[2023-12-25 19:32:09,324 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-12-25 19:32:09,463 INFO  L134       CoverageAnalysis]: Checked inductivity of 546 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 532 trivial. 0 not checked.
[2023-12-25 19:32:09,463 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 19:32:09,463 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1436687832]
[2023-12-25 19:32:09,463 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 19:32:09,463 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1126145601]
[2023-12-25 19:32:09,463 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1126145601] provided 1 perfect and 1 imperfect interpolant sequences
[2023-12-25 19:32:09,463 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2023-12-25 19:32:09,464 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8] total 12
[2023-12-25 19:32:09,464 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1848998546]
[2023-12-25 19:32:09,465 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 19:32:09,468 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2023-12-25 19:32:09,468 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 19:32:09,470 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2023-12-25 19:32:09,470 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132
[2023-12-25 19:32:09,471 INFO  L87              Difference]: Start difference. First operand 9307 states and 15521 transitions. Second operand  has 6 states, 6 states have (on average 920.6666666666666) internal successors, (5524), 6 states have internal predecessors, (5524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 19:32:20,396 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 19:32:20,396 INFO  L93              Difference]: Finished difference Result 41822 states and 69540 transitions.
[2023-12-25 19:32:20,396 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. 
[2023-12-25 19:32:20,398 INFO  L78                 Accepts]: Start accepts. Automaton has  has 6 states, 6 states have (on average 920.6666666666666) internal successors, (5524), 6 states have internal predecessors, (5524), 0 states have call successors, (0), 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 6055
[2023-12-25 19:32:20,468 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 19:32:20,513 INFO  L225             Difference]: With dead ends: 41822
[2023-12-25 19:32:20,513 INFO  L226             Difference]: Without dead ends: 25881
[2023-12-25 19:32:20,537 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 12110 GetRequests, 12098 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182
[2023-12-25 19:32:20,538 INFO  L413           NwaCegarLoop]: 24076 mSDtfsCounter, 51269 mSDsluCounter, 57586 mSDsCounter, 0 mSdLazyCounter, 20316 mSolverCounterSat, 651 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51269 SdHoareTripleChecker+Valid, 81662 SdHoareTripleChecker+Invalid, 20967 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 651 IncrementalHoareTripleChecker+Valid, 20316 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.3s IncrementalHoareTripleChecker+Time
[2023-12-25 19:32:20,552 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [51269 Valid, 81662 Invalid, 20967 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [651 Valid, 20316 Invalid, 0 Unknown, 0 Unchecked, 10.3s Time]
[2023-12-25 19:32:20,587 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 25881 states.
[2023-12-25 19:32:20,791 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 25881 to 9309.
[2023-12-25 19:32:20,801 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 9309 states, 9308 states have (on average 1.667705199828105) internal successors, (15523), 9308 states have internal predecessors, (15523), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 19:32:20,811 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 9309 states to 9309 states and 15523 transitions.
[2023-12-25 19:32:20,811 INFO  L78                 Accepts]: Start accepts. Automaton has 9309 states and 15523 transitions. Word has length 6055
[2023-12-25 19:32:20,814 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 19:32:20,814 INFO  L495      AbstractCegarLoop]: Abstraction has 9309 states and 15523 transitions.
[2023-12-25 19:32:20,815 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 6 states, 6 states have (on average 920.6666666666666) internal successors, (5524), 6 states have internal predecessors, (5524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 19:32:20,815 INFO  L276                IsEmpty]: Start isEmpty. Operand 9309 states and 15523 transitions.
[2023-12-25 19:32:20,995 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 6057
[2023-12-25 19:32:20,996 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 19:32:20,997 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-12-25 19:32:21,074 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0
[2023-12-25 19:32:21,224 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 19:32:21,224 INFO  L420      AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 19:32:21,225 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 19:32:21,226 INFO  L85        PathProgramCache]: Analyzing trace with hash -467352030, now seen corresponding path program 1 times
[2023-12-25 19:32:21,226 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 19:32:21,226 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1239338180]
[2023-12-25 19:32:21,226 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 19:32:21,226 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 19:32:21,606 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 19:32:21,607 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1064682595]
[2023-12-25 19:32:21,608 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 19:32:21,608 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 19:32:21,608 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 19:32:21,609 INFO  L229       MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-25 19:32:21,611 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process
[2023-12-25 19:32:27,688 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 19:32:27,853 INFO  L262         TraceCheckSpWp]: Trace formula consists of 26671 conjuncts, 17 conjunts are in the unsatisfiable core
[2023-12-25 19:32:27,912 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 19:32:28,632 INFO  L134       CoverageAnalysis]: Checked inductivity of 546 backedges. 16 proven. 507 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked.
[2023-12-25 19:32:28,633 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-12-25 19:32:28,720 INFO  L134       CoverageAnalysis]: Checked inductivity of 546 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 530 trivial. 0 not checked.
[2023-12-25 19:32:28,721 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 19:32:28,721 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1239338180]
[2023-12-25 19:32:28,721 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 19:32:28,721 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1064682595]
[2023-12-25 19:32:28,721 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1064682595] provided 1 perfect and 1 imperfect interpolant sequences
[2023-12-25 19:32:28,721 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2023-12-25 19:32:28,722 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10
[2023-12-25 19:32:28,722 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [803880082]
[2023-12-25 19:32:28,722 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 19:32:28,725 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-12-25 19:32:28,725 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 19:32:28,727 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-12-25 19:32:28,728 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90
[2023-12-25 19:32:28,729 INFO  L87              Difference]: Start difference. First operand 9309 states and 15523 transitions. Second operand  has 5 states, 5 states have (on average 1105.4) internal successors, (5527), 5 states have internal predecessors, (5527), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 19:32:35,387 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 19:32:35,387 INFO  L93              Difference]: Finished difference Result 33532 states and 55708 transitions.
[2023-12-25 19:32:35,388 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2023-12-25 19:32:35,389 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 1105.4) internal successors, (5527), 5 states have internal predecessors, (5527), 0 states have call successors, (0), 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 6056
[2023-12-25 19:32:35,393 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 19:32:35,421 INFO  L225             Difference]: With dead ends: 33532
[2023-12-25 19:32:35,421 INFO  L226             Difference]: Without dead ends: 17584
[2023-12-25 19:32:35,429 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 12111 GetRequests, 12102 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110
[2023-12-25 19:32:35,431 INFO  L413           NwaCegarLoop]: 24066 mSDtfsCounter, 37465 mSDsluCounter, 23253 mSDsCounter, 0 mSdLazyCounter, 9614 mSolverCounterSat, 648 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37465 SdHoareTripleChecker+Valid, 47319 SdHoareTripleChecker+Invalid, 10262 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 648 IncrementalHoareTripleChecker+Valid, 9614 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.2s IncrementalHoareTripleChecker+Time
[2023-12-25 19:32:35,431 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [37465 Valid, 47319 Invalid, 10262 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [648 Valid, 9614 Invalid, 0 Unknown, 0 Unchecked, 6.2s Time]
[2023-12-25 19:32:35,445 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 17584 states.
[2023-12-25 19:32:35,519 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 17584 to 9311.
[2023-12-25 19:32:35,526 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 9311 states, 9310 states have (on average 1.667561761546724) internal successors, (15525), 9310 states have internal predecessors, (15525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 19:32:35,533 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 9311 states to 9311 states and 15525 transitions.
[2023-12-25 19:32:35,533 INFO  L78                 Accepts]: Start accepts. Automaton has 9311 states and 15525 transitions. Word has length 6056
[2023-12-25 19:32:35,536 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 19:32:35,536 INFO  L495      AbstractCegarLoop]: Abstraction has 9311 states and 15525 transitions.
[2023-12-25 19:32:35,536 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 1105.4) internal successors, (5527), 5 states have internal predecessors, (5527), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 19:32:35,536 INFO  L276                IsEmpty]: Start isEmpty. Operand 9311 states and 15525 transitions.
[2023-12-25 19:32:35,844 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 6058
[2023-12-25 19:32:35,845 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 19:32:35,847 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 19:32:35,920 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0
[2023-12-25 19:32:36,060 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 19:32:36,061 INFO  L420      AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 19:32:36,062 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 19:32:36,062 INFO  L85        PathProgramCache]: Analyzing trace with hash -1711813004, now seen corresponding path program 1 times
[2023-12-25 19:32:36,062 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 19:32:36,063 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [769493197]
[2023-12-25 19:32:36,063 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 19:32:36,063 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 19:32:36,417 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 19:32:36,418 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [61112838]
[2023-12-25 19:32:36,419 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 19:32:36,419 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 19:32:36,419 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 19:32:36,431 INFO  L229       MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-25 19:32:36,433 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process
[2023-12-25 19:32:42,510 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 19:32:42,674 INFO  L262         TraceCheckSpWp]: Trace formula consists of 26674 conjuncts, 17 conjunts are in the unsatisfiable core
[2023-12-25 19:32:42,734 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 19:32:43,373 INFO  L134       CoverageAnalysis]: Checked inductivity of 546 backedges. 18 proven. 507 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked.
[2023-12-25 19:32:43,373 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-12-25 19:32:43,472 INFO  L134       CoverageAnalysis]: Checked inductivity of 546 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 528 trivial. 0 not checked.
[2023-12-25 19:32:43,473 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 19:32:43,474 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [769493197]
[2023-12-25 19:32:43,474 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 19:32:43,474 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [61112838]
[2023-12-25 19:32:43,474 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [61112838] provided 1 perfect and 1 imperfect interpolant sequences
[2023-12-25 19:32:43,474 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2023-12-25 19:32:43,475 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10
[2023-12-25 19:32:43,475 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [628928359]
[2023-12-25 19:32:43,475 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 19:32:43,491 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-12-25 19:32:43,492 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 19:32:43,494 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-12-25 19:32:43,494 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90
[2023-12-25 19:32:43,495 INFO  L87              Difference]: Start difference. First operand 9311 states and 15525 transitions. Second operand  has 5 states, 5 states have (on average 1106.0) internal successors, (5530), 5 states have internal predecessors, (5530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 19:32:52,079 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 19:32:52,079 INFO  L93              Difference]: Finished difference Result 33540 states and 55716 transitions.
[2023-12-25 19:32:52,079 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2023-12-25 19:32:52,081 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 1106.0) internal successors, (5530), 5 states have internal predecessors, (5530), 0 states have call successors, (0), 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 6057
[2023-12-25 19:32:52,085 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 19:32:52,121 INFO  L225             Difference]: With dead ends: 33540
[2023-12-25 19:32:52,121 INFO  L226             Difference]: Without dead ends: 17585
[2023-12-25 19:32:52,151 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 12113 GetRequests, 12104 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110
[2023-12-25 19:32:52,152 INFO  L413           NwaCegarLoop]: 24058 mSDtfsCounter, 25615 mSDsluCounter, 35159 mSDsCounter, 0 mSdLazyCounter, 13170 mSolverCounterSat, 648 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25615 SdHoareTripleChecker+Valid, 59217 SdHoareTripleChecker+Invalid, 13818 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 648 IncrementalHoareTripleChecker+Valid, 13170 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.2s IncrementalHoareTripleChecker+Time
[2023-12-25 19:32:52,153 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [25615 Valid, 59217 Invalid, 13818 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [648 Valid, 13170 Invalid, 0 Unknown, 0 Unchecked, 8.2s Time]
[2023-12-25 19:32:52,167 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 17585 states.
[2023-12-25 19:32:52,266 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 17585 to 9313.
[2023-12-25 19:32:52,275 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 9313 states, 9312 states have (on average 1.667418384879725) internal successors, (15527), 9312 states have internal predecessors, (15527), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 19:32:52,284 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 9313 states to 9313 states and 15527 transitions.
[2023-12-25 19:32:52,284 INFO  L78                 Accepts]: Start accepts. Automaton has 9313 states and 15527 transitions. Word has length 6057
[2023-12-25 19:32:52,287 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 19:32:52,287 INFO  L495      AbstractCegarLoop]: Abstraction has 9313 states and 15527 transitions.
[2023-12-25 19:32:52,288 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 1106.0) internal successors, (5530), 5 states have internal predecessors, (5530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 19:32:52,288 INFO  L276                IsEmpty]: Start isEmpty. Operand 9313 states and 15527 transitions.
[2023-12-25 19:32:52,493 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 6059
[2023-12-25 19:32:52,494 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 19:32:52,495 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-12-25 19:32:52,574 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 19:32:52,700 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 19:32:52,700 INFO  L420      AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 19:32:52,701 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 19:32:52,702 INFO  L85        PathProgramCache]: Analyzing trace with hash 101550216, now seen corresponding path program 1 times
[2023-12-25 19:32:52,702 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 19:32:52,702 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1403262903]
[2023-12-25 19:32:52,703 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 19:32:52,703 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 19:32:53,063 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 19:32:53,063 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1672346917]
[2023-12-25 19:32:53,064 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 19:32:53,064 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 19:32:53,064 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 19:32:53,065 INFO  L229       MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-25 19:32:53,073 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process
[2023-12-25 19:32:59,083 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 19:32:59,244 INFO  L262         TraceCheckSpWp]: Trace formula consists of 26677 conjuncts, 17 conjunts are in the unsatisfiable core
[2023-12-25 19:32:59,303 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 19:33:00,031 INFO  L134       CoverageAnalysis]: Checked inductivity of 546 backedges. 20 proven. 507 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked.
[2023-12-25 19:33:00,031 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-12-25 19:33:00,165 INFO  L134       CoverageAnalysis]: Checked inductivity of 546 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 526 trivial. 0 not checked.
[2023-12-25 19:33:00,165 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 19:33:00,165 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1403262903]
[2023-12-25 19:33:00,165 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 19:33:00,165 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1672346917]
[2023-12-25 19:33:00,165 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1672346917] provided 1 perfect and 1 imperfect interpolant sequences
[2023-12-25 19:33:00,165 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2023-12-25 19:33:00,166 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10
[2023-12-25 19:33:00,167 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2012657998]
[2023-12-25 19:33:00,167 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 19:33:00,170 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-12-25 19:33:00,170 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 19:33:00,173 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-12-25 19:33:00,173 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90
[2023-12-25 19:33:00,174 INFO  L87              Difference]: Start difference. First operand 9313 states and 15527 transitions. Second operand  has 5 states, 5 states have (on average 1106.6) internal successors, (5533), 5 states have internal predecessors, (5533), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 19:33:07,021 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 19:33:07,022 INFO  L93              Difference]: Finished difference Result 33548 states and 55724 transitions.
[2023-12-25 19:33:07,022 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2023-12-25 19:33:07,024 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 1106.6) internal successors, (5533), 5 states have internal predecessors, (5533), 0 states have call successors, (0), 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 6058
[2023-12-25 19:33:07,028 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 19:33:07,046 INFO  L225             Difference]: With dead ends: 33548
[2023-12-25 19:33:07,046 INFO  L226             Difference]: Without dead ends: 17586
[2023-12-25 19:33:07,061 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 12115 GetRequests, 12106 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110
[2023-12-25 19:33:07,062 INFO  L413           NwaCegarLoop]: 24050 mSDtfsCounter, 37449 mSDsluCounter, 23243 mSDsCounter, 0 mSdLazyCounter, 9614 mSolverCounterSat, 648 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37449 SdHoareTripleChecker+Valid, 47293 SdHoareTripleChecker+Invalid, 10262 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 648 IncrementalHoareTripleChecker+Valid, 9614 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.4s IncrementalHoareTripleChecker+Time
[2023-12-25 19:33:07,062 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [37449 Valid, 47293 Invalid, 10262 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [648 Valid, 9614 Invalid, 0 Unknown, 0 Unchecked, 6.4s Time]
[2023-12-25 19:33:07,077 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 17586 states.
[2023-12-25 19:33:07,196 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 17586 to 9315.
[2023-12-25 19:33:07,205 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 9315 states, 9314 states have (on average 1.6672750697874168) internal successors, (15529), 9314 states have internal predecessors, (15529), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 19:33:07,214 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 9315 states to 9315 states and 15529 transitions.
[2023-12-25 19:33:07,215 INFO  L78                 Accepts]: Start accepts. Automaton has 9315 states and 15529 transitions. Word has length 6058
[2023-12-25 19:33:07,217 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 19:33:07,218 INFO  L495      AbstractCegarLoop]: Abstraction has 9315 states and 15529 transitions.
[2023-12-25 19:33:07,219 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 1106.6) internal successors, (5533), 5 states have internal predecessors, (5533), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 19:33:07,219 INFO  L276                IsEmpty]: Start isEmpty. Operand 9315 states and 15529 transitions.
[2023-12-25 19:33:07,450 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 6060
[2023-12-25 19:33:07,450 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 19:33:07,451 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-12-25 19:33:07,523 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0
[2023-12-25 19:33:07,668 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 19:33:07,668 INFO  L420      AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 19:33:07,669 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 19:33:07,669 INFO  L85        PathProgramCache]: Analyzing trace with hash 125673230, now seen corresponding path program 1 times
[2023-12-25 19:33:07,669 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 19:33:07,669 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [923578616]
[2023-12-25 19:33:07,670 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 19:33:07,670 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 19:33:08,163 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 19:33:08,163 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1389553006]
[2023-12-25 19:33:08,165 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 19:33:08,165 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 19:33:08,165 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 19:33:08,176 INFO  L229       MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-25 19:33:08,179 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process
[2023-12-25 19:33:13,885 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 19:33:14,052 INFO  L262         TraceCheckSpWp]: Trace formula consists of 26680 conjuncts, 17 conjunts are in the unsatisfiable core
[2023-12-25 19:33:14,134 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 19:33:14,574 INFO  L134       CoverageAnalysis]: Checked inductivity of 546 backedges. 22 proven. 507 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked.
[2023-12-25 19:33:14,574 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-12-25 19:33:14,659 INFO  L134       CoverageAnalysis]: Checked inductivity of 546 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 524 trivial. 0 not checked.
[2023-12-25 19:33:14,659 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 19:33:14,659 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [923578616]
[2023-12-25 19:33:14,659 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 19:33:14,659 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1389553006]
[2023-12-25 19:33:14,659 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1389553006] provided 1 perfect and 1 imperfect interpolant sequences
[2023-12-25 19:33:14,659 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2023-12-25 19:33:14,660 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10
[2023-12-25 19:33:14,660 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1813646328]
[2023-12-25 19:33:14,660 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 19:33:14,663 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-12-25 19:33:14,663 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 19:33:14,666 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-12-25 19:33:14,666 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90
[2023-12-25 19:33:14,666 INFO  L87              Difference]: Start difference. First operand 9315 states and 15529 transitions. Second operand  has 5 states, 5 states have (on average 1107.2) internal successors, (5536), 5 states have internal predecessors, (5536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 19:33:21,554 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 19:33:21,554 INFO  L93              Difference]: Finished difference Result 33556 states and 55732 transitions.
[2023-12-25 19:33:21,554 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2023-12-25 19:33:21,556 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 1107.2) internal successors, (5536), 5 states have internal predecessors, (5536), 0 states have call successors, (0), 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 6059
[2023-12-25 19:33:21,560 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 19:33:21,581 INFO  L225             Difference]: With dead ends: 33556
[2023-12-25 19:33:21,581 INFO  L226             Difference]: Without dead ends: 17587
[2023-12-25 19:33:21,596 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 12117 GetRequests, 12108 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110
[2023-12-25 19:33:21,597 INFO  L413           NwaCegarLoop]: 24042 mSDtfsCounter, 25603 mSDsluCounter, 35139 mSDsCounter, 0 mSdLazyCounter, 13170 mSolverCounterSat, 648 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25603 SdHoareTripleChecker+Valid, 59181 SdHoareTripleChecker+Invalid, 13818 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 648 IncrementalHoareTripleChecker+Valid, 13170 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.5s IncrementalHoareTripleChecker+Time
[2023-12-25 19:33:21,597 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [25603 Valid, 59181 Invalid, 13818 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [648 Valid, 13170 Invalid, 0 Unknown, 0 Unchecked, 6.5s Time]
[2023-12-25 19:33:21,614 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 17587 states.
[2023-12-25 19:33:21,883 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 17587 to 9317.
[2023-12-25 19:33:21,889 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 9317 states, 9316 states have (on average 1.6671318162301416) internal successors, (15531), 9316 states have internal predecessors, (15531), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 19:33:21,913 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 9317 states to 9317 states and 15531 transitions.
[2023-12-25 19:33:21,914 INFO  L78                 Accepts]: Start accepts. Automaton has 9317 states and 15531 transitions. Word has length 6059
[2023-12-25 19:33:21,916 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 19:33:21,916 INFO  L495      AbstractCegarLoop]: Abstraction has 9317 states and 15531 transitions.
[2023-12-25 19:33:21,917 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 1107.2) internal successors, (5536), 5 states have internal predecessors, (5536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 19:33:21,917 INFO  L276                IsEmpty]: Start isEmpty. Operand 9317 states and 15531 transitions.
[2023-12-25 19:33:22,091 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 6061
[2023-12-25 19:33:22,091 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 19:33:22,093 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-12-25 19:33:22,167 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0
[2023-12-25 19:33:22,312 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,SelfDestructingSolverStorable22
[2023-12-25 19:33:22,312 INFO  L420      AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 19:33:22,313 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 19:33:22,314 INFO  L85        PathProgramCache]: Analyzing trace with hash 1767531820, now seen corresponding path program 1 times
[2023-12-25 19:33:22,314 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 19:33:22,314 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2143487266]
[2023-12-25 19:33:22,314 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 19:33:22,315 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 19:33:22,702 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 19:33:22,703 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [74049998]
[2023-12-25 19:33:22,704 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 19:33:22,704 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 19:33:22,704 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 19:33:22,705 INFO  L229       MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-25 19:33:22,753 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process
[2023-12-25 19:33:28,802 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 19:33:28,978 INFO  L262         TraceCheckSpWp]: Trace formula consists of 26684 conjuncts, 17 conjunts are in the unsatisfiable core
[2023-12-25 19:33:29,038 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 19:33:29,581 INFO  L134       CoverageAnalysis]: Checked inductivity of 546 backedges. 24 proven. 507 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked.
[2023-12-25 19:33:29,581 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-12-25 19:33:29,683 INFO  L134       CoverageAnalysis]: Checked inductivity of 546 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 522 trivial. 0 not checked.
[2023-12-25 19:33:29,683 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 19:33:29,683 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2143487266]
[2023-12-25 19:33:29,683 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 19:33:29,683 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [74049998]
[2023-12-25 19:33:29,683 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [74049998] provided 1 perfect and 1 imperfect interpolant sequences
[2023-12-25 19:33:29,683 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2023-12-25 19:33:29,684 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10
[2023-12-25 19:33:29,684 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1830148446]
[2023-12-25 19:33:29,684 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 19:33:29,687 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-12-25 19:33:29,687 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 19:33:29,690 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-12-25 19:33:29,690 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90
[2023-12-25 19:33:29,691 INFO  L87              Difference]: Start difference. First operand 9317 states and 15531 transitions. Second operand  has 5 states, 5 states have (on average 1107.8) internal successors, (5539), 5 states have internal predecessors, (5539), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 19:33:36,006 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 19:33:36,007 INFO  L93              Difference]: Finished difference Result 33564 states and 55740 transitions.
[2023-12-25 19:33:36,007 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2023-12-25 19:33:36,008 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 1107.8) internal successors, (5539), 5 states have internal predecessors, (5539), 0 states have call successors, (0), 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 6060
[2023-12-25 19:33:36,012 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 19:33:36,028 INFO  L225             Difference]: With dead ends: 33564
[2023-12-25 19:33:36,028 INFO  L226             Difference]: Without dead ends: 17588
[2023-12-25 19:33:36,040 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 12119 GetRequests, 12110 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110
[2023-12-25 19:33:36,041 INFO  L413           NwaCegarLoop]: 24034 mSDtfsCounter, 37433 mSDsluCounter, 23233 mSDsCounter, 0 mSdLazyCounter, 9614 mSolverCounterSat, 648 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37433 SdHoareTripleChecker+Valid, 47267 SdHoareTripleChecker+Invalid, 10262 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 648 IncrementalHoareTripleChecker+Valid, 9614 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.9s IncrementalHoareTripleChecker+Time
[2023-12-25 19:33:36,041 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [37433 Valid, 47267 Invalid, 10262 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [648 Valid, 9614 Invalid, 0 Unknown, 0 Unchecked, 5.9s Time]
[2023-12-25 19:33:36,054 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 17588 states.
[2023-12-25 19:33:36,135 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 17588 to 9319.
[2023-12-25 19:33:36,143 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 9319 states, 9318 states have (on average 1.6669886241682765) internal successors, (15533), 9318 states have internal predecessors, (15533), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 19:33:36,152 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 9319 states to 9319 states and 15533 transitions.
[2023-12-25 19:33:36,152 INFO  L78                 Accepts]: Start accepts. Automaton has 9319 states and 15533 transitions. Word has length 6060
[2023-12-25 19:33:36,154 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 19:33:36,155 INFO  L495      AbstractCegarLoop]: Abstraction has 9319 states and 15533 transitions.
[2023-12-25 19:33:36,156 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 1107.8) internal successors, (5539), 5 states have internal predecessors, (5539), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 19:33:36,156 INFO  L276                IsEmpty]: Start isEmpty. Operand 9319 states and 15533 transitions.
[2023-12-25 19:33:36,425 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 6062
[2023-12-25 19:33:36,425 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 19:33:36,426 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-12-25 19:33:36,498 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0
[2023-12-25 19:33:36,640 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,SelfDestructingSolverStorable23
[2023-12-25 19:33:36,641 INFO  L420      AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 19:33:36,642 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 19:33:36,642 INFO  L85        PathProgramCache]: Analyzing trace with hash -1577912858, now seen corresponding path program 1 times
[2023-12-25 19:33:36,642 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 19:33:36,642 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [123957266]
[2023-12-25 19:33:36,643 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 19:33:36,643 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 19:33:36,988 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 19:33:36,988 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [185371175]
[2023-12-25 19:33:36,989 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 19:33:36,989 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 19:33:36,989 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 19:33:36,990 INFO  L229       MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-25 19:33:36,991 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process
[2023-12-25 19:33:42,936 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 19:33:43,108 INFO  L262         TraceCheckSpWp]: Trace formula consists of 26687 conjuncts, 17 conjunts are in the unsatisfiable core
[2023-12-25 19:33:43,167 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 19:33:43,700 INFO  L134       CoverageAnalysis]: Checked inductivity of 546 backedges. 26 proven. 507 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked.
[2023-12-25 19:33:43,700 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-12-25 19:33:43,804 INFO  L134       CoverageAnalysis]: Checked inductivity of 546 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 520 trivial. 0 not checked.
[2023-12-25 19:33:43,805 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 19:33:43,806 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [123957266]
[2023-12-25 19:33:43,806 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 19:33:43,806 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [185371175]
[2023-12-25 19:33:43,806 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [185371175] provided 1 perfect and 1 imperfect interpolant sequences
[2023-12-25 19:33:43,807 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2023-12-25 19:33:43,808 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10
[2023-12-25 19:33:43,808 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1466676351]
[2023-12-25 19:33:43,808 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 19:33:43,810 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-12-25 19:33:43,810 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 19:33:43,812 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-12-25 19:33:43,812 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90
[2023-12-25 19:33:43,813 INFO  L87              Difference]: Start difference. First operand 9319 states and 15533 transitions. Second operand  has 5 states, 5 states have (on average 1108.4) internal successors, (5542), 5 states have internal predecessors, (5542), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 19:33:49,482 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 19:33:49,482 INFO  L93              Difference]: Finished difference Result 33572 states and 55748 transitions.
[2023-12-25 19:33:49,483 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2023-12-25 19:33:49,484 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 1108.4) internal successors, (5542), 5 states have internal predecessors, (5542), 0 states have call successors, (0), 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 6061
[2023-12-25 19:33:49,487 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 19:33:49,499 INFO  L225             Difference]: With dead ends: 33572
[2023-12-25 19:33:49,499 INFO  L226             Difference]: Without dead ends: 17589
[2023-12-25 19:33:49,506 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 12121 GetRequests, 12112 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110
[2023-12-25 19:33:49,506 INFO  L413           NwaCegarLoop]: 24026 mSDtfsCounter, 37425 mSDsluCounter, 23228 mSDsCounter, 0 mSdLazyCounter, 9614 mSolverCounterSat, 648 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37425 SdHoareTripleChecker+Valid, 47254 SdHoareTripleChecker+Invalid, 10262 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 648 IncrementalHoareTripleChecker+Valid, 9614 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.3s IncrementalHoareTripleChecker+Time
[2023-12-25 19:33:49,506 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [37425 Valid, 47254 Invalid, 10262 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [648 Valid, 9614 Invalid, 0 Unknown, 0 Unchecked, 5.3s Time]
[2023-12-25 19:33:49,517 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 17589 states.
[2023-12-25 19:33:49,586 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 17589 to 9321.
[2023-12-25 19:33:49,594 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 9321 states, 9320 states have (on average 1.6668454935622317) internal successors, (15535), 9320 states have internal predecessors, (15535), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 19:33:49,603 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 9321 states to 9321 states and 15535 transitions.
[2023-12-25 19:33:49,603 INFO  L78                 Accepts]: Start accepts. Automaton has 9321 states and 15535 transitions. Word has length 6061
[2023-12-25 19:33:49,605 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 19:33:49,606 INFO  L495      AbstractCegarLoop]: Abstraction has 9321 states and 15535 transitions.
[2023-12-25 19:33:49,606 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 1108.4) internal successors, (5542), 5 states have internal predecessors, (5542), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 19:33:49,606 INFO  L276                IsEmpty]: Start isEmpty. Operand 9321 states and 15535 transitions.
[2023-12-25 19:33:49,782 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 6063
[2023-12-25 19:33:49,782 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 19:33:49,783 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-12-25 19:33:49,853 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0
[2023-12-25 19:33:50,008 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 19:33:50,008 INFO  L420      AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 19:33:50,009 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 19:33:50,009 INFO  L85        PathProgramCache]: Analyzing trace with hash 1704143762, now seen corresponding path program 1 times
[2023-12-25 19:33:50,009 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 19:33:50,009 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1581977787]
[2023-12-25 19:33:50,010 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 19:33:50,010 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 19:33:50,362 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 19:33:50,362 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [126374544]
[2023-12-25 19:33:50,363 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 19:33:50,364 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 19:33:50,364 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 19:33:50,365 INFO  L229       MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-25 19:33:50,366 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process
[2023-12-25 19:33:56,644 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 19:33:56,810 INFO  L262         TraceCheckSpWp]: Trace formula consists of 26690 conjuncts, 17 conjunts are in the unsatisfiable core
[2023-12-25 19:33:56,868 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 19:33:57,414 INFO  L134       CoverageAnalysis]: Checked inductivity of 546 backedges. 28 proven. 507 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked.
[2023-12-25 19:33:57,414 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-12-25 19:33:57,529 INFO  L134       CoverageAnalysis]: Checked inductivity of 546 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 518 trivial. 0 not checked.
[2023-12-25 19:33:57,529 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 19:33:57,530 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1581977787]
[2023-12-25 19:33:57,530 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 19:33:57,530 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [126374544]
[2023-12-25 19:33:57,530 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [126374544] provided 1 perfect and 1 imperfect interpolant sequences
[2023-12-25 19:33:57,530 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2023-12-25 19:33:57,531 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10
[2023-12-25 19:33:57,531 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1299019542]
[2023-12-25 19:33:57,531 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 19:33:57,534 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-12-25 19:33:57,534 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 19:33:57,537 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-12-25 19:33:57,537 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90
[2023-12-25 19:33:57,539 INFO  L87              Difference]: Start difference. First operand 9321 states and 15535 transitions. Second operand  has 5 states, 5 states have (on average 1109.0) internal successors, (5545), 5 states have internal predecessors, (5545), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 19:34:04,611 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 19:34:04,611 INFO  L93              Difference]: Finished difference Result 33580 states and 55756 transitions.
[2023-12-25 19:34:04,611 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2023-12-25 19:34:04,612 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 1109.0) internal successors, (5545), 5 states have internal predecessors, (5545), 0 states have call successors, (0), 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 6062
[2023-12-25 19:34:04,616 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 19:34:04,631 INFO  L225             Difference]: With dead ends: 33580
[2023-12-25 19:34:04,631 INFO  L226             Difference]: Without dead ends: 17590
[2023-12-25 19:34:04,641 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 12123 GetRequests, 12114 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110
[2023-12-25 19:34:04,642 INFO  L413           NwaCegarLoop]: 24018 mSDtfsCounter, 25585 mSDsluCounter, 35109 mSDsCounter, 0 mSdLazyCounter, 13170 mSolverCounterSat, 648 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25585 SdHoareTripleChecker+Valid, 59127 SdHoareTripleChecker+Invalid, 13818 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 648 IncrementalHoareTripleChecker+Valid, 13170 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.7s IncrementalHoareTripleChecker+Time
[2023-12-25 19:34:04,642 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [25585 Valid, 59127 Invalid, 13818 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [648 Valid, 13170 Invalid, 0 Unknown, 0 Unchecked, 6.7s Time]
[2023-12-25 19:34:04,653 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 17590 states.
[2023-12-25 19:34:04,731 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 17590 to 9323.
[2023-12-25 19:34:04,739 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 9323 states, 9322 states have (on average 1.6667024243724522) internal successors, (15537), 9322 states have internal predecessors, (15537), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 19:34:04,747 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 9323 states to 9323 states and 15537 transitions.
[2023-12-25 19:34:04,748 INFO  L78                 Accepts]: Start accepts. Automaton has 9323 states and 15537 transitions. Word has length 6062
[2023-12-25 19:34:04,750 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 19:34:04,750 INFO  L495      AbstractCegarLoop]: Abstraction has 9323 states and 15537 transitions.
[2023-12-25 19:34:04,751 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 1109.0) internal successors, (5545), 5 states have internal predecessors, (5545), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 19:34:04,751 INFO  L276                IsEmpty]: Start isEmpty. Operand 9323 states and 15537 transitions.
[2023-12-25 19:34:04,928 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 6064
[2023-12-25 19:34:04,928 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 19:34:04,929 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-12-25 19:34:04,999 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0
[2023-12-25 19:34:05,156 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 19:34:05,156 INFO  L420      AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 19:34:05,157 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 19:34:05,157 INFO  L85        PathProgramCache]: Analyzing trace with hash 582083200, now seen corresponding path program 1 times
[2023-12-25 19:34:05,157 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 19:34:05,157 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1299100874]
[2023-12-25 19:34:05,158 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 19:34:05,158 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 19:34:05,515 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 19:34:05,515 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1273000115]
[2023-12-25 19:34:05,517 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 19:34:05,517 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 19:34:05,517 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 19:34:05,518 INFO  L229       MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-25 19:34:05,520 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process
[2023-12-25 19:34:11,490 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 19:34:11,675 INFO  L262         TraceCheckSpWp]: Trace formula consists of 26693 conjuncts, 17 conjunts are in the unsatisfiable core
[2023-12-25 19:34:11,739 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 19:34:12,485 INFO  L134       CoverageAnalysis]: Checked inductivity of 546 backedges. 30 proven. 507 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked.
[2023-12-25 19:34:12,485 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-12-25 19:34:12,589 INFO  L134       CoverageAnalysis]: Checked inductivity of 546 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 516 trivial. 0 not checked.
[2023-12-25 19:34:12,589 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 19:34:12,589 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1299100874]
[2023-12-25 19:34:12,589 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 19:34:12,589 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1273000115]
[2023-12-25 19:34:12,589 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1273000115] provided 1 perfect and 1 imperfect interpolant sequences
[2023-12-25 19:34:12,590 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2023-12-25 19:34:12,590 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10
[2023-12-25 19:34:12,591 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [592764456]
[2023-12-25 19:34:12,591 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 19:34:12,593 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-12-25 19:34:12,593 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 19:34:12,595 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-12-25 19:34:12,595 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90
[2023-12-25 19:34:12,596 INFO  L87              Difference]: Start difference. First operand 9323 states and 15537 transitions. Second operand  has 5 states, 5 states have (on average 1109.6) internal successors, (5548), 5 states have internal predecessors, (5548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 19:34:20,030 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 19:34:20,030 INFO  L93              Difference]: Finished difference Result 33588 states and 55764 transitions.
[2023-12-25 19:34:20,031 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2023-12-25 19:34:20,032 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 1109.6) internal successors, (5548), 5 states have internal predecessors, (5548), 0 states have call successors, (0), 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 6063
[2023-12-25 19:34:20,035 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 19:34:20,048 INFO  L225             Difference]: With dead ends: 33588
[2023-12-25 19:34:20,048 INFO  L226             Difference]: Without dead ends: 17591
[2023-12-25 19:34:20,054 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 12125 GetRequests, 12116 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110
[2023-12-25 19:34:20,055 INFO  L413           NwaCegarLoop]: 24010 mSDtfsCounter, 25579 mSDsluCounter, 35099 mSDsCounter, 0 mSdLazyCounter, 13170 mSolverCounterSat, 648 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25579 SdHoareTripleChecker+Valid, 59109 SdHoareTripleChecker+Invalid, 13818 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 648 IncrementalHoareTripleChecker+Valid, 13170 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.8s IncrementalHoareTripleChecker+Time
[2023-12-25 19:34:20,055 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [25579 Valid, 59109 Invalid, 13818 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [648 Valid, 13170 Invalid, 0 Unknown, 0 Unchecked, 6.8s Time]
[2023-12-25 19:34:20,067 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 17591 states.
[2023-12-25 19:34:20,143 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 17591 to 9325.
[2023-12-25 19:34:20,151 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 9325 states, 9324 states have (on average 1.6665594165594166) internal successors, (15539), 9324 states have internal predecessors, (15539), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 19:34:20,160 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 9325 states to 9325 states and 15539 transitions.
[2023-12-25 19:34:20,160 INFO  L78                 Accepts]: Start accepts. Automaton has 9325 states and 15539 transitions. Word has length 6063
[2023-12-25 19:34:20,162 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 19:34:20,163 INFO  L495      AbstractCegarLoop]: Abstraction has 9325 states and 15539 transitions.
[2023-12-25 19:34:20,163 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 1109.6) internal successors, (5548), 5 states have internal predecessors, (5548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 19:34:20,163 INFO  L276                IsEmpty]: Start isEmpty. Operand 9325 states and 15539 transitions.
[2023-12-25 19:34:20,340 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 6065
[2023-12-25 19:34:20,340 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 19:34:20,341 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-12-25 19:34:20,411 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0
[2023-12-25 19:34:20,554 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,SelfDestructingSolverStorable26
[2023-12-25 19:34:20,554 INFO  L420      AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 19:34:20,555 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 19:34:20,555 INFO  L85        PathProgramCache]: Analyzing trace with hash -1381146826, now seen corresponding path program 1 times
[2023-12-25 19:34:20,555 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 19:34:20,555 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2096428195]
[2023-12-25 19:34:20,556 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 19:34:20,556 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 19:34:20,897 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 19:34:20,897 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [126180709]
[2023-12-25 19:34:20,898 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 19:34:20,898 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 19:34:20,898 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 19:34:20,899 INFO  L229       MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-25 19:34:20,902 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process
[2023-12-25 19:34:26,858 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 19:34:27,029 INFO  L262         TraceCheckSpWp]: Trace formula consists of 26697 conjuncts, 17 conjunts are in the unsatisfiable core
[2023-12-25 19:34:27,091 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 19:34:27,886 INFO  L134       CoverageAnalysis]: Checked inductivity of 546 backedges. 32 proven. 507 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked.
[2023-12-25 19:34:27,886 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-12-25 19:34:28,001 INFO  L134       CoverageAnalysis]: Checked inductivity of 546 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 514 trivial. 0 not checked.
[2023-12-25 19:34:28,001 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 19:34:28,001 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2096428195]
[2023-12-25 19:34:28,001 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 19:34:28,001 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [126180709]
[2023-12-25 19:34:28,001 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [126180709] provided 1 perfect and 1 imperfect interpolant sequences
[2023-12-25 19:34:28,001 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2023-12-25 19:34:28,002 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10
[2023-12-25 19:34:28,002 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [366282429]
[2023-12-25 19:34:28,002 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 19:34:28,005 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-12-25 19:34:28,005 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 19:34:28,007 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-12-25 19:34:28,007 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90
[2023-12-25 19:34:28,007 INFO  L87              Difference]: Start difference. First operand 9325 states and 15539 transitions. Second operand  has 5 states, 5 states have (on average 1110.2) internal successors, (5551), 5 states have internal predecessors, (5551), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 19:34:34,379 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 19:34:34,380 INFO  L93              Difference]: Finished difference Result 33596 states and 55772 transitions.
[2023-12-25 19:34:34,380 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2023-12-25 19:34:34,381 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 1110.2) internal successors, (5551), 5 states have internal predecessors, (5551), 0 states have call successors, (0), 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 6064
[2023-12-25 19:34:34,384 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 19:34:34,397 INFO  L225             Difference]: With dead ends: 33596
[2023-12-25 19:34:34,398 INFO  L226             Difference]: Without dead ends: 17592
[2023-12-25 19:34:34,406 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 12127 GetRequests, 12118 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110
[2023-12-25 19:34:34,411 INFO  L413           NwaCegarLoop]: 24002 mSDtfsCounter, 25587 mSDsluCounter, 34376 mSDsCounter, 0 mSdLazyCounter, 12210 mSolverCounterSat, 648 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25587 SdHoareTripleChecker+Valid, 58378 SdHoareTripleChecker+Invalid, 12858 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 648 IncrementalHoareTripleChecker+Valid, 12210 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.9s IncrementalHoareTripleChecker+Time
[2023-12-25 19:34:34,412 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [25587 Valid, 58378 Invalid, 12858 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [648 Valid, 12210 Invalid, 0 Unknown, 0 Unchecked, 5.9s Time]
[2023-12-25 19:34:34,424 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 17592 states.
[2023-12-25 19:34:34,504 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 17592 to 9327.
[2023-12-25 19:34:34,513 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 9327 states, 9326 states have (on average 1.6664164700836372) internal successors, (15541), 9326 states have internal predecessors, (15541), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 19:34:34,523 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 9327 states to 9327 states and 15541 transitions.
[2023-12-25 19:34:34,523 INFO  L78                 Accepts]: Start accepts. Automaton has 9327 states and 15541 transitions. Word has length 6064
[2023-12-25 19:34:34,526 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 19:34:34,526 INFO  L495      AbstractCegarLoop]: Abstraction has 9327 states and 15541 transitions.
[2023-12-25 19:34:34,526 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 1110.2) internal successors, (5551), 5 states have internal predecessors, (5551), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 19:34:34,527 INFO  L276                IsEmpty]: Start isEmpty. Operand 9327 states and 15541 transitions.
[2023-12-25 19:34:34,705 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 6066
[2023-12-25 19:34:34,705 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 19:34:34,709 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-12-25 19:34:34,784 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 19:34:34,912 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,SelfDestructingSolverStorable27
[2023-12-25 19:34:34,913 INFO  L420      AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 19:34:34,913 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 19:34:34,913 INFO  L85        PathProgramCache]: Analyzing trace with hash 268576856, now seen corresponding path program 1 times
[2023-12-25 19:34:34,913 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 19:34:34,913 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1621658055]
[2023-12-25 19:34:34,914 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 19:34:34,914 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 19:34:35,254 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 19:34:35,254 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [912323099]
[2023-12-25 19:34:35,255 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 19:34:35,255 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 19:34:35,255 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 19:34:35,256 INFO  L229       MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-25 19:34:35,258 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process
[2023-12-25 19:34:41,180 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 19:34:41,337 INFO  L262         TraceCheckSpWp]: Trace formula consists of 26700 conjuncts, 17 conjunts are in the unsatisfiable core
[2023-12-25 19:34:41,390 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 19:34:41,833 INFO  L134       CoverageAnalysis]: Checked inductivity of 546 backedges. 34 proven. 507 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked.
[2023-12-25 19:34:41,833 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-12-25 19:34:41,927 INFO  L134       CoverageAnalysis]: Checked inductivity of 546 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 512 trivial. 0 not checked.
[2023-12-25 19:34:41,927 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 19:34:41,927 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1621658055]
[2023-12-25 19:34:41,927 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 19:34:41,927 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [912323099]
[2023-12-25 19:34:41,927 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [912323099] provided 1 perfect and 1 imperfect interpolant sequences
[2023-12-25 19:34:41,928 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2023-12-25 19:34:41,928 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10
[2023-12-25 19:34:41,929 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [212785012]
[2023-12-25 19:34:41,929 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 19:34:41,932 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-12-25 19:34:41,932 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 19:34:41,935 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-12-25 19:34:41,935 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90
[2023-12-25 19:34:41,935 INFO  L87              Difference]: Start difference. First operand 9327 states and 15541 transitions. Second operand  has 5 states, 5 states have (on average 1110.8) internal successors, (5554), 5 states have internal predecessors, (5554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 19:34:48,220 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 19:34:48,220 INFO  L93              Difference]: Finished difference Result 33604 states and 55780 transitions.
[2023-12-25 19:34:48,221 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2023-12-25 19:34:48,222 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 1110.8) internal successors, (5554), 5 states have internal predecessors, (5554), 0 states have call successors, (0), 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 6065
[2023-12-25 19:34:48,226 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 19:34:48,245 INFO  L225             Difference]: With dead ends: 33604
[2023-12-25 19:34:48,245 INFO  L226             Difference]: Without dead ends: 17593
[2023-12-25 19:34:48,258 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 12129 GetRequests, 12120 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110
[2023-12-25 19:34:48,258 INFO  L413           NwaCegarLoop]: 23994 mSDtfsCounter, 37393 mSDsluCounter, 23208 mSDsCounter, 0 mSdLazyCounter, 9614 mSolverCounterSat, 648 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37393 SdHoareTripleChecker+Valid, 47202 SdHoareTripleChecker+Invalid, 10262 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 648 IncrementalHoareTripleChecker+Valid, 9614 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.9s IncrementalHoareTripleChecker+Time
[2023-12-25 19:34:48,258 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [37393 Valid, 47202 Invalid, 10262 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [648 Valid, 9614 Invalid, 0 Unknown, 0 Unchecked, 5.9s Time]
[2023-12-25 19:34:48,275 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 17593 states.
[2023-12-25 19:34:48,379 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 17593 to 9329.
[2023-12-25 19:34:48,389 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 9329 states, 9328 states have (on average 1.6662735849056605) internal successors, (15543), 9328 states have internal predecessors, (15543), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 19:34:48,399 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 9329 states to 9329 states and 15543 transitions.
[2023-12-25 19:34:48,399 INFO  L78                 Accepts]: Start accepts. Automaton has 9329 states and 15543 transitions. Word has length 6065
[2023-12-25 19:34:48,402 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 19:34:48,402 INFO  L495      AbstractCegarLoop]: Abstraction has 9329 states and 15543 transitions.
[2023-12-25 19:34:48,404 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 1110.8) internal successors, (5554), 5 states have internal predecessors, (5554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 19:34:48,404 INFO  L276                IsEmpty]: Start isEmpty. Operand 9329 states and 15543 transitions.
[2023-12-25 19:34:48,580 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 6067
[2023-12-25 19:34:48,581 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 19:34:48,582 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-12-25 19:34:48,674 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0
[2023-12-25 19:34:48,808 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28
[2023-12-25 19:34:48,809 INFO  L420      AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 19:34:48,809 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 19:34:48,809 INFO  L85        PathProgramCache]: Analyzing trace with hash 1364306332, now seen corresponding path program 1 times
[2023-12-25 19:34:48,809 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 19:34:48,809 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1031434280]
[2023-12-25 19:34:48,810 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 19:34:48,810 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 19:34:49,197 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 19:34:49,197 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1565525591]
[2023-12-25 19:34:49,198 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 19:34:49,198 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 19:34:49,198 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 19:34:49,199 INFO  L229       MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-25 19:34:49,202 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process
[2023-12-25 19:34:55,299 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 19:34:55,474 INFO  L262         TraceCheckSpWp]: Trace formula consists of 26703 conjuncts, 17 conjunts are in the unsatisfiable core
[2023-12-25 19:34:55,532 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 19:34:56,052 INFO  L134       CoverageAnalysis]: Checked inductivity of 546 backedges. 36 proven. 507 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked.
[2023-12-25 19:34:56,053 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-12-25 19:34:56,164 INFO  L134       CoverageAnalysis]: Checked inductivity of 546 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 510 trivial. 0 not checked.
[2023-12-25 19:34:56,165 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 19:34:56,165 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1031434280]
[2023-12-25 19:34:56,165 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 19:34:56,165 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1565525591]
[2023-12-25 19:34:56,165 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1565525591] provided 1 perfect and 1 imperfect interpolant sequences
[2023-12-25 19:34:56,165 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2023-12-25 19:34:56,166 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10
[2023-12-25 19:34:56,166 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1032540645]
[2023-12-25 19:34:56,166 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 19:34:56,169 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-12-25 19:34:56,169 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 19:34:56,171 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-12-25 19:34:56,171 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90
[2023-12-25 19:34:56,172 INFO  L87              Difference]: Start difference. First operand 9329 states and 15543 transitions. Second operand  has 5 states, 5 states have (on average 1111.4) internal successors, (5557), 5 states have internal predecessors, (5557), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 19:35:02,015 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 19:35:02,015 INFO  L93              Difference]: Finished difference Result 33612 states and 55788 transitions.
[2023-12-25 19:35:02,015 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2023-12-25 19:35:02,016 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 1111.4) internal successors, (5557), 5 states have internal predecessors, (5557), 0 states have call successors, (0), 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 6066
[2023-12-25 19:35:02,020 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 19:35:02,035 INFO  L225             Difference]: With dead ends: 33612
[2023-12-25 19:35:02,035 INFO  L226             Difference]: Without dead ends: 17594
[2023-12-25 19:35:02,049 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 12131 GetRequests, 12122 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110
[2023-12-25 19:35:02,049 INFO  L413           NwaCegarLoop]: 23986 mSDtfsCounter, 37385 mSDsluCounter, 23203 mSDsCounter, 0 mSdLazyCounter, 9614 mSolverCounterSat, 648 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37385 SdHoareTripleChecker+Valid, 47189 SdHoareTripleChecker+Invalid, 10262 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 648 IncrementalHoareTripleChecker+Valid, 9614 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.5s IncrementalHoareTripleChecker+Time
[2023-12-25 19:35:02,050 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [37385 Valid, 47189 Invalid, 10262 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [648 Valid, 9614 Invalid, 0 Unknown, 0 Unchecked, 5.5s Time]
[2023-12-25 19:35:02,064 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 17594 states.
[2023-12-25 19:35:02,152 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 17594 to 9331.
[2023-12-25 19:35:02,160 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 9331 states, 9330 states have (on average 1.6661307609860665) internal successors, (15545), 9330 states have internal predecessors, (15545), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 19:35:02,169 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 9331 states to 9331 states and 15545 transitions.
[2023-12-25 19:35:02,169 INFO  L78                 Accepts]: Start accepts. Automaton has 9331 states and 15545 transitions. Word has length 6066
[2023-12-25 19:35:02,172 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 19:35:02,172 INFO  L495      AbstractCegarLoop]: Abstraction has 9331 states and 15545 transitions.
[2023-12-25 19:35:02,173 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 1111.4) internal successors, (5557), 5 states have internal predecessors, (5557), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 19:35:02,173 INFO  L276                IsEmpty]: Start isEmpty. Operand 9331 states and 15545 transitions.
[2023-12-25 19:35:02,349 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 6068
[2023-12-25 19:35:02,350 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 19:35:02,351 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-12-25 19:35:02,434 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 19:35:02,576 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 19:35:02,577 INFO  L420      AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 19:35:02,577 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 19:35:02,577 INFO  L85        PathProgramCache]: Analyzing trace with hash 1381937394, now seen corresponding path program 1 times
[2023-12-25 19:35:02,577 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 19:35:02,577 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [637904302]
[2023-12-25 19:35:02,578 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 19:35:02,578 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 19:35:02,948 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 19:35:02,948 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [336496172]
[2023-12-25 19:35:02,949 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 19:35:02,949 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 19:35:02,949 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 19:35:02,950 INFO  L229       MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-25 19:35:02,952 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process
[2023-12-25 19:35:09,258 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 19:35:09,422 INFO  L262         TraceCheckSpWp]: Trace formula consists of 26706 conjuncts, 17 conjunts are in the unsatisfiable core
[2023-12-25 19:35:09,478 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 19:35:09,971 INFO  L134       CoverageAnalysis]: Checked inductivity of 546 backedges. 38 proven. 507 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2023-12-25 19:35:09,971 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-12-25 19:35:10,081 INFO  L134       CoverageAnalysis]: Checked inductivity of 546 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 508 trivial. 0 not checked.
[2023-12-25 19:35:10,081 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 19:35:10,082 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [637904302]
[2023-12-25 19:35:10,082 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 19:35:10,082 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [336496172]
[2023-12-25 19:35:10,082 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [336496172] provided 1 perfect and 1 imperfect interpolant sequences
[2023-12-25 19:35:10,082 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2023-12-25 19:35:10,083 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10
[2023-12-25 19:35:10,083 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1699412132]
[2023-12-25 19:35:10,083 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 19:35:10,086 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-12-25 19:35:10,086 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 19:35:10,088 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-12-25 19:35:10,088 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90
[2023-12-25 19:35:10,088 INFO  L87              Difference]: Start difference. First operand 9331 states and 15545 transitions. Second operand  has 5 states, 5 states have (on average 1112.0) internal successors, (5560), 5 states have internal predecessors, (5560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 19:35:17,226 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 19:35:17,227 INFO  L93              Difference]: Finished difference Result 33620 states and 55796 transitions.
[2023-12-25 19:35:17,227 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2023-12-25 19:35:17,228 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 1112.0) internal successors, (5560), 5 states have internal predecessors, (5560), 0 states have call successors, (0), 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 6067
[2023-12-25 19:35:17,232 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 19:35:17,248 INFO  L225             Difference]: With dead ends: 33620
[2023-12-25 19:35:17,248 INFO  L226             Difference]: Without dead ends: 17595
[2023-12-25 19:35:17,259 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 12133 GetRequests, 12124 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110
[2023-12-25 19:35:17,260 INFO  L413           NwaCegarLoop]: 23978 mSDtfsCounter, 25555 mSDsluCounter, 35059 mSDsCounter, 0 mSdLazyCounter, 13170 mSolverCounterSat, 648 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25555 SdHoareTripleChecker+Valid, 59037 SdHoareTripleChecker+Invalid, 13818 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 648 IncrementalHoareTripleChecker+Valid, 13170 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.8s IncrementalHoareTripleChecker+Time
[2023-12-25 19:35:17,260 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [25555 Valid, 59037 Invalid, 13818 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [648 Valid, 13170 Invalid, 0 Unknown, 0 Unchecked, 6.8s Time]
[2023-12-25 19:35:17,273 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 17595 states.
[2023-12-25 19:35:17,365 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 17595 to 9333.
[2023-12-25 19:35:17,374 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 9333 states, 9332 states have (on average 1.6659879982854693) internal successors, (15547), 9332 states have internal predecessors, (15547), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 19:35:17,383 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 9333 states to 9333 states and 15547 transitions.
[2023-12-25 19:35:17,383 INFO  L78                 Accepts]: Start accepts. Automaton has 9333 states and 15547 transitions. Word has length 6067
[2023-12-25 19:35:17,386 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 19:35:17,386 INFO  L495      AbstractCegarLoop]: Abstraction has 9333 states and 15547 transitions.
[2023-12-25 19:35:17,387 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 1112.0) internal successors, (5560), 5 states have internal predecessors, (5560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 19:35:17,387 INFO  L276                IsEmpty]: Start isEmpty. Operand 9333 states and 15547 transitions.
[2023-12-25 19:35:17,567 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 6069
[2023-12-25 19:35:17,567 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 19:35:17,569 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-12-25 19:35:17,656 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Ended with exit code 0
[2023-12-25 19:35:17,784 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 19:35:17,784 INFO  L420      AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 19:35:17,785 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 19:35:17,785 INFO  L85        PathProgramCache]: Analyzing trace with hash -1198508992, now seen corresponding path program 1 times
[2023-12-25 19:35:17,785 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 19:35:17,785 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [213188898]
[2023-12-25 19:35:17,786 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 19:35:17,786 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 19:35:18,154 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 19:35:18,154 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [236924122]
[2023-12-25 19:35:18,155 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 19:35:18,156 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 19:35:18,156 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 19:35:18,170 INFO  L229       MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-25 19:35:18,177 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process
[2023-12-25 19:35:24,330 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 19:35:24,497 INFO  L262         TraceCheckSpWp]: Trace formula consists of 26710 conjuncts, 17 conjunts are in the unsatisfiable core
[2023-12-25 19:35:24,550 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 19:35:25,161 INFO  L134       CoverageAnalysis]: Checked inductivity of 546 backedges. 39 proven. 507 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-25 19:35:25,161 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-12-25 19:35:25,292 INFO  L134       CoverageAnalysis]: Checked inductivity of 546 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 506 trivial. 0 not checked.
[2023-12-25 19:35:25,293 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 19:35:25,293 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [213188898]
[2023-12-25 19:35:25,293 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 19:35:25,293 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [236924122]
[2023-12-25 19:35:25,293 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [236924122] provided 1 perfect and 1 imperfect interpolant sequences
[2023-12-25 19:35:25,293 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2023-12-25 19:35:25,294 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10
[2023-12-25 19:35:25,294 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [908708542]
[2023-12-25 19:35:25,294 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 19:35:25,297 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-12-25 19:35:25,297 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 19:35:25,299 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-12-25 19:35:25,299 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90
[2023-12-25 19:35:25,300 INFO  L87              Difference]: Start difference. First operand 9333 states and 15547 transitions. Second operand  has 5 states, 5 states have (on average 1112.6) internal successors, (5563), 5 states have internal predecessors, (5563), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 19:35:32,015 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 19:35:32,016 INFO  L93              Difference]: Finished difference Result 33628 states and 55804 transitions.
[2023-12-25 19:35:32,016 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2023-12-25 19:35:32,017 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 1112.6) internal successors, (5563), 5 states have internal predecessors, (5563), 0 states have call successors, (0), 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 6068
[2023-12-25 19:35:32,021 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 19:35:32,038 INFO  L225             Difference]: With dead ends: 33628
[2023-12-25 19:35:32,038 INFO  L226             Difference]: Without dead ends: 17596
[2023-12-25 19:35:32,050 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 12135 GetRequests, 12126 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110
[2023-12-25 19:35:32,051 INFO  L413           NwaCegarLoop]: 23970 mSDtfsCounter, 37369 mSDsluCounter, 23193 mSDsCounter, 0 mSdLazyCounter, 9614 mSolverCounterSat, 648 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37369 SdHoareTripleChecker+Valid, 47163 SdHoareTripleChecker+Invalid, 10262 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 648 IncrementalHoareTripleChecker+Valid, 9614 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.3s IncrementalHoareTripleChecker+Time
[2023-12-25 19:35:32,051 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [37369 Valid, 47163 Invalid, 10262 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [648 Valid, 9614 Invalid, 0 Unknown, 0 Unchecked, 6.3s Time]
[2023-12-25 19:35:32,066 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 17596 states.
[2023-12-25 19:35:32,156 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 17596 to 9335.
[2023-12-25 19:35:32,165 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 9335 states, 9334 states have (on average 1.6658452967645168) internal successors, (15549), 9334 states have internal predecessors, (15549), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 19:35:32,175 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 9335 states to 9335 states and 15549 transitions.
[2023-12-25 19:35:32,175 INFO  L78                 Accepts]: Start accepts. Automaton has 9335 states and 15549 transitions. Word has length 6068
[2023-12-25 19:35:32,178 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 19:35:32,178 INFO  L495      AbstractCegarLoop]: Abstraction has 9335 states and 15549 transitions.
[2023-12-25 19:35:32,179 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 1112.6) internal successors, (5563), 5 states have internal predecessors, (5563), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 19:35:32,179 INFO  L276                IsEmpty]: Start isEmpty. Operand 9335 states and 15549 transitions.
[2023-12-25 19:35:32,357 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 6070
[2023-12-25 19:35:32,357 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 19:35:32,358 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-12-25 19:35:32,440 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0
[2023-12-25 19:35:32,580 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 19:35:32,580 INFO  L420      AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 19:35:32,581 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 19:35:32,581 INFO  L85        PathProgramCache]: Analyzing trace with hash -1003887158, now seen corresponding path program 1 times
[2023-12-25 19:35:32,581 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 19:35:32,581 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1942283438]
[2023-12-25 19:35:32,582 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 19:35:32,582 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 19:35:32,952 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 19:35:32,953 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [707751406]
[2023-12-25 19:35:32,954 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 19:35:32,954 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 19:35:32,954 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 19:35:32,955 INFO  L229       MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-25 19:35:32,955 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process
[2023-12-25 19:35:38,979 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 19:35:39,161 INFO  L262         TraceCheckSpWp]: Trace formula consists of 26713 conjuncts, 17 conjunts are in the unsatisfiable core
[2023-12-25 19:35:39,224 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 19:35:39,885 INFO  L134       CoverageAnalysis]: Checked inductivity of 546 backedges. 40 proven. 506 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-25 19:35:39,885 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-12-25 19:35:40,259 INFO  L134       CoverageAnalysis]: Checked inductivity of 546 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 502 trivial. 0 not checked.
[2023-12-25 19:35:40,259 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 19:35:40,259 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1942283438]
[2023-12-25 19:35:40,259 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 19:35:40,260 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [707751406]
[2023-12-25 19:35:40,260 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [707751406] provided 1 perfect and 1 imperfect interpolant sequences
[2023-12-25 19:35:40,260 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2023-12-25 19:35:40,261 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10
[2023-12-25 19:35:40,261 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1016154472]
[2023-12-25 19:35:40,262 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 19:35:40,264 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-12-25 19:35:40,264 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 19:35:40,266 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-12-25 19:35:40,266 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90
[2023-12-25 19:35:40,267 INFO  L87              Difference]: Start difference. First operand 9335 states and 15549 transitions. Second operand  has 5 states, 5 states have (on average 1113.6) internal successors, (5568), 5 states have internal predecessors, (5568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 19:35:47,210 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 19:35:47,211 INFO  L93              Difference]: Finished difference Result 33639 states and 55817 transitions.
[2023-12-25 19:35:47,211 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2023-12-25 19:35:47,212 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 1113.6) internal successors, (5568), 5 states have internal predecessors, (5568), 0 states have call successors, (0), 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 6069
[2023-12-25 19:35:47,215 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 19:35:47,227 INFO  L225             Difference]: With dead ends: 33639
[2023-12-25 19:35:47,227 INFO  L226             Difference]: Without dead ends: 17600
[2023-12-25 19:35:47,234 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 12137 GetRequests, 12128 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110
[2023-12-25 19:35:47,234 INFO  L413           NwaCegarLoop]: 23957 mSDtfsCounter, 25541 mSDsluCounter, 35037 mSDsCounter, 0 mSdLazyCounter, 13162 mSolverCounterSat, 648 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25541 SdHoareTripleChecker+Valid, 58994 SdHoareTripleChecker+Invalid, 13810 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 648 IncrementalHoareTripleChecker+Valid, 13162 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.5s IncrementalHoareTripleChecker+Time
[2023-12-25 19:35:47,234 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [25541 Valid, 58994 Invalid, 13810 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [648 Valid, 13162 Invalid, 0 Unknown, 0 Unchecked, 6.5s Time]
[2023-12-25 19:35:47,247 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 17600 states.
[2023-12-25 19:35:47,320 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 17600 to 9340.
[2023-12-25 19:35:47,329 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 9340 states, 9339 states have (on average 1.665702966056323) internal successors, (15556), 9339 states have internal predecessors, (15556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 19:35:47,338 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 9340 states to 9340 states and 15556 transitions.
[2023-12-25 19:35:47,338 INFO  L78                 Accepts]: Start accepts. Automaton has 9340 states and 15556 transitions. Word has length 6069
[2023-12-25 19:35:47,341 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 19:35:47,341 INFO  L495      AbstractCegarLoop]: Abstraction has 9340 states and 15556 transitions.
[2023-12-25 19:35:47,342 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 1113.6) internal successors, (5568), 5 states have internal predecessors, (5568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 19:35:47,342 INFO  L276                IsEmpty]: Start isEmpty. Operand 9340 states and 15556 transitions.
[2023-12-25 19:35:47,517 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 6071
[2023-12-25 19:35:47,518 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 19:35:47,519 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-12-25 19:35:47,589 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0
[2023-12-25 19:35:47,732 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,SelfDestructingSolverStorable32
[2023-12-25 19:35:47,732 INFO  L420      AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 19:35:47,733 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 19:35:47,733 INFO  L85        PathProgramCache]: Analyzing trace with hash 954068556, now seen corresponding path program 1 times
[2023-12-25 19:35:47,733 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 19:35:47,733 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [824476770]
[2023-12-25 19:35:47,734 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 19:35:47,735 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 19:35:48,069 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 19:35:48,069 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2010332108]
[2023-12-25 19:35:48,070 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 19:35:48,070 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 19:35:48,070 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 19:35:48,071 INFO  L229       MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-25 19:35:48,073 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process
[2023-12-25 19:35:53,922 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 19:35:54,086 INFO  L262         TraceCheckSpWp]: Trace formula consists of 26716 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-12-25 19:35:54,145 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 19:35:54,868 INFO  L134       CoverageAnalysis]: Checked inductivity of 546 backedges. 44 proven. 502 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-25 19:35:54,868 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-12-25 19:35:55,018 INFO  L134       CoverageAnalysis]: Checked inductivity of 546 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 498 trivial. 0 not checked.
[2023-12-25 19:35:55,018 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 19:35:55,019 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [824476770]
[2023-12-25 19:35:55,019 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 19:35:55,019 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2010332108]
[2023-12-25 19:35:55,019 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [2010332108] provided 1 perfect and 1 imperfect interpolant sequences
[2023-12-25 19:35:55,019 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2023-12-25 19:35:55,020 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8] total 12
[2023-12-25 19:35:55,020 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [422898040]
[2023-12-25 19:35:55,020 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 19:35:55,023 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2023-12-25 19:35:55,023 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 19:35:55,025 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2023-12-25 19:35:55,025 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132
[2023-12-25 19:35:55,026 INFO  L87              Difference]: Start difference. First operand 9340 states and 15556 transitions. Second operand  has 6 states, 6 states have (on average 928.8333333333334) internal successors, (5573), 6 states have internal predecessors, (5573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 19:36:07,742 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 19:36:07,742 INFO  L93              Difference]: Finished difference Result 42087 states and 69880 transitions.
[2023-12-25 19:36:07,742 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. 
[2023-12-25 19:36:07,744 INFO  L78                 Accepts]: Start accepts. Automaton has  has 6 states, 6 states have (on average 928.8333333333334) internal successors, (5573), 6 states have internal predecessors, (5573), 0 states have call successors, (0), 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 6070
[2023-12-25 19:36:07,747 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 19:36:07,770 INFO  L225             Difference]: With dead ends: 42087
[2023-12-25 19:36:07,770 INFO  L226             Difference]: Without dead ends: 25979
[2023-12-25 19:36:07,782 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 12141 GetRequests, 12128 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210
[2023-12-25 19:36:07,783 INFO  L413           NwaCegarLoop]: 23947 mSDtfsCounter, 39331 mSDsluCounter, 80477 mSDsCounter, 0 mSdLazyCounter, 26432 mSolverCounterSat, 651 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39331 SdHoareTripleChecker+Valid, 104424 SdHoareTripleChecker+Invalid, 27083 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 651 IncrementalHoareTripleChecker+Valid, 26432 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.0s IncrementalHoareTripleChecker+Time
[2023-12-25 19:36:07,783 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [39331 Valid, 104424 Invalid, 27083 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [651 Valid, 26432 Invalid, 0 Unknown, 0 Unchecked, 12.0s Time]
[2023-12-25 19:36:07,801 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 25979 states.
[2023-12-25 19:36:07,908 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 25979 to 9345.
[2023-12-25 19:36:07,916 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 9345 states, 9344 states have (on average 1.6655607876712328) internal successors, (15563), 9344 states have internal predecessors, (15563), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 19:36:07,925 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 9345 states to 9345 states and 15563 transitions.
[2023-12-25 19:36:07,926 INFO  L78                 Accepts]: Start accepts. Automaton has 9345 states and 15563 transitions. Word has length 6070
[2023-12-25 19:36:07,928 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 19:36:07,928 INFO  L495      AbstractCegarLoop]: Abstraction has 9345 states and 15563 transitions.
[2023-12-25 19:36:07,929 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 6 states, 6 states have (on average 928.8333333333334) internal successors, (5573), 6 states have internal predecessors, (5573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 19:36:07,929 INFO  L276                IsEmpty]: Start isEmpty. Operand 9345 states and 15563 transitions.
[2023-12-25 19:36:08,107 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 6072
[2023-12-25 19:36:08,107 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 19:36:08,108 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-12-25 19:36:08,180 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 19:36:08,318 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,32 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 19:36:08,319 INFO  L420      AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 19:36:08,320 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 19:36:08,321 INFO  L85        PathProgramCache]: Analyzing trace with hash 1394937022, now seen corresponding path program 1 times
[2023-12-25 19:36:08,324 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 19:36:08,324 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1410295292]
[2023-12-25 19:36:08,325 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 19:36:08,325 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 19:36:08,687 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 19:36:08,687 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1672054972]
[2023-12-25 19:36:08,688 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 19:36:08,688 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 19:36:08,688 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 19:36:08,689 INFO  L229       MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-25 19:36:08,691 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process
[2023-12-25 19:36:14,927 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 19:36:15,096 INFO  L262         TraceCheckSpWp]: Trace formula consists of 26719 conjuncts, 17 conjunts are in the unsatisfiable core
[2023-12-25 19:36:15,155 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 19:36:15,683 INFO  L134       CoverageAnalysis]: Checked inductivity of 546 backedges. 48 proven. 498 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-25 19:36:15,683 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-12-25 19:36:15,815 INFO  L134       CoverageAnalysis]: Checked inductivity of 546 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 494 trivial. 0 not checked.
[2023-12-25 19:36:15,815 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 19:36:15,815 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1410295292]
[2023-12-25 19:36:15,815 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 19:36:15,815 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1672054972]
[2023-12-25 19:36:15,815 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1672054972] provided 1 perfect and 1 imperfect interpolant sequences
[2023-12-25 19:36:15,815 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2023-12-25 19:36:15,816 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10
[2023-12-25 19:36:15,816 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [834734923]
[2023-12-25 19:36:15,816 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 19:36:15,819 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-12-25 19:36:15,819 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 19:36:15,821 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-12-25 19:36:15,821 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90
[2023-12-25 19:36:15,821 INFO  L87              Difference]: Start difference. First operand 9345 states and 15563 transitions. Second operand  has 5 states, 5 states have (on average 1115.6) internal successors, (5578), 5 states have internal predecessors, (5578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 19:36:24,703 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 19:36:24,704 INFO  L93              Difference]: Finished difference Result 33736 states and 55967 transitions.
[2023-12-25 19:36:24,704 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2023-12-25 19:36:24,705 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 1115.6) internal successors, (5578), 5 states have internal predecessors, (5578), 0 states have call successors, (0), 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 6071
[2023-12-25 19:36:24,709 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 19:36:24,721 INFO  L225             Difference]: With dead ends: 33736
[2023-12-25 19:36:24,721 INFO  L226             Difference]: Without dead ends: 17608
[2023-12-25 19:36:24,729 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 12141 GetRequests, 12132 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110
[2023-12-25 19:36:24,729 INFO  L413           NwaCegarLoop]: 23931 mSDtfsCounter, 25525 mSDsluCounter, 35013 mSDsCounter, 0 mSdLazyCounter, 13146 mSolverCounterSat, 648 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25525 SdHoareTripleChecker+Valid, 58944 SdHoareTripleChecker+Invalid, 13794 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 648 IncrementalHoareTripleChecker+Valid, 13146 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.3s IncrementalHoareTripleChecker+Time
[2023-12-25 19:36:24,730 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [25525 Valid, 58944 Invalid, 13794 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [648 Valid, 13146 Invalid, 0 Unknown, 0 Unchecked, 8.3s Time]
[2023-12-25 19:36:24,740 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 17608 states.
[2023-12-25 19:36:24,819 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 17608 to 9350.
[2023-12-25 19:36:24,827 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 9350 states, 9349 states have (on average 1.665418761364852) internal successors, (15570), 9349 states have internal predecessors, (15570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 19:36:24,836 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 9350 states to 9350 states and 15570 transitions.
[2023-12-25 19:36:24,836 INFO  L78                 Accepts]: Start accepts. Automaton has 9350 states and 15570 transitions. Word has length 6071
[2023-12-25 19:36:24,839 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 19:36:24,839 INFO  L495      AbstractCegarLoop]: Abstraction has 9350 states and 15570 transitions.
[2023-12-25 19:36:24,839 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 1115.6) internal successors, (5578), 5 states have internal predecessors, (5578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 19:36:24,839 INFO  L276                IsEmpty]: Start isEmpty. Operand 9350 states and 15570 transitions.
[2023-12-25 19:36:25,015 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 6073
[2023-12-25 19:36:25,015 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 19:36:25,016 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-12-25 19:36:25,097 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Forceful destruction successful, exit code 0
[2023-12-25 19:36:25,244 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,33 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 19:36:25,245 INFO  L420      AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 19:36:25,245 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 19:36:25,245 INFO  L85        PathProgramCache]: Analyzing trace with hash -2092059048, now seen corresponding path program 1 times
[2023-12-25 19:36:25,245 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 19:36:25,245 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1906263692]
[2023-12-25 19:36:25,246 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 19:36:25,246 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 19:36:25,594 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 19:36:25,594 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1062116835]
[2023-12-25 19:36:25,595 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 19:36:25,595 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 19:36:25,595 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 19:36:25,596 INFO  L229       MonitoredProcess]: Starting monitored process 34 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-25 19:36:25,597 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process
[2023-12-25 19:36:31,611 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 19:36:31,777 INFO  L262         TraceCheckSpWp]: Trace formula consists of 26722 conjuncts, 17 conjunts are in the unsatisfiable core
[2023-12-25 19:36:31,834 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 19:36:32,363 INFO  L134       CoverageAnalysis]: Checked inductivity of 546 backedges. 52 proven. 494 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-25 19:36:32,364 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-12-25 19:36:32,516 INFO  L134       CoverageAnalysis]: Checked inductivity of 546 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 490 trivial. 0 not checked.
[2023-12-25 19:36:32,516 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 19:36:32,516 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1906263692]
[2023-12-25 19:36:32,516 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 19:36:32,516 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1062116835]
[2023-12-25 19:36:32,516 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1062116835] provided 1 perfect and 1 imperfect interpolant sequences
[2023-12-25 19:36:32,516 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2023-12-25 19:36:32,517 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10
[2023-12-25 19:36:32,517 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1918892439]
[2023-12-25 19:36:32,517 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 19:36:32,520 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-12-25 19:36:32,520 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 19:36:32,522 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-12-25 19:36:32,522 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90
[2023-12-25 19:36:32,523 INFO  L87              Difference]: Start difference. First operand 9350 states and 15570 transitions. Second operand  has 5 states, 5 states have (on average 1116.6) internal successors, (5583), 5 states have internal predecessors, (5583), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 19:36:38,807 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 19:36:38,807 INFO  L93              Difference]: Finished difference Result 33760 states and 56001 transitions.
[2023-12-25 19:36:38,807 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2023-12-25 19:36:38,809 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 1116.6) internal successors, (5583), 5 states have internal predecessors, (5583), 0 states have call successors, (0), 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 6072
[2023-12-25 19:36:38,812 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 19:36:38,825 INFO  L225             Difference]: With dead ends: 33760
[2023-12-25 19:36:38,825 INFO  L226             Difference]: Without dead ends: 17612
[2023-12-25 19:36:38,834 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 12143 GetRequests, 12134 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110
[2023-12-25 19:36:38,836 INFO  L413           NwaCegarLoop]: 23918 mSDtfsCounter, 37323 mSDsluCounter, 23169 mSDsCounter, 0 mSdLazyCounter, 9598 mSolverCounterSat, 648 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37323 SdHoareTripleChecker+Valid, 47087 SdHoareTripleChecker+Invalid, 10246 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 648 IncrementalHoareTripleChecker+Valid, 9598 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.9s IncrementalHoareTripleChecker+Time
[2023-12-25 19:36:38,836 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [37323 Valid, 47087 Invalid, 10246 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [648 Valid, 9598 Invalid, 0 Unknown, 0 Unchecked, 5.9s Time]
[2023-12-25 19:36:38,849 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 17612 states.
[2023-12-25 19:36:38,924 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 17612 to 9355.
[2023-12-25 19:36:38,932 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 9355 states, 9354 states have (on average 1.6652768868933077) internal successors, (15577), 9354 states have internal predecessors, (15577), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 19:36:38,941 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 9355 states to 9355 states and 15577 transitions.
[2023-12-25 19:36:38,942 INFO  L78                 Accepts]: Start accepts. Automaton has 9355 states and 15577 transitions. Word has length 6072
[2023-12-25 19:36:38,944 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 19:36:38,944 INFO  L495      AbstractCegarLoop]: Abstraction has 9355 states and 15577 transitions.
[2023-12-25 19:36:38,945 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 1116.6) internal successors, (5583), 5 states have internal predecessors, (5583), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 19:36:38,945 INFO  L276                IsEmpty]: Start isEmpty. Operand 9355 states and 15577 transitions.
[2023-12-25 19:36:39,122 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 6074
[2023-12-25 19:36:39,122 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 19:36:39,124 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-12-25 19:36:39,198 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Forceful destruction successful, exit code 0
[2023-12-25 19:36:39,339 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,SelfDestructingSolverStorable35
[2023-12-25 19:36:39,340 INFO  L420      AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 19:36:39,340 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 19:36:39,341 INFO  L85        PathProgramCache]: Analyzing trace with hash -664894030, now seen corresponding path program 1 times
[2023-12-25 19:36:39,341 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 19:36:39,341 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1935403180]
[2023-12-25 19:36:39,341 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 19:36:39,341 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 19:36:39,704 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 19:36:39,704 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1168021244]
[2023-12-25 19:36:39,705 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 19:36:39,706 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 19:36:39,706 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 19:36:39,708 INFO  L229       MonitoredProcess]: Starting monitored process 35 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-25 19:36:39,709 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process
[2023-12-25 19:36:45,792 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 19:36:45,970 INFO  L262         TraceCheckSpWp]: Trace formula consists of 26725 conjuncts, 17 conjunts are in the unsatisfiable core
[2023-12-25 19:36:46,029 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 19:36:46,614 INFO  L134       CoverageAnalysis]: Checked inductivity of 546 backedges. 56 proven. 490 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-25 19:36:46,615 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-12-25 19:36:46,737 INFO  L134       CoverageAnalysis]: Checked inductivity of 546 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 486 trivial. 0 not checked.
[2023-12-25 19:36:46,738 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 19:36:46,738 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1935403180]
[2023-12-25 19:36:46,738 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 19:36:46,738 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1168021244]
[2023-12-25 19:36:46,738 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1168021244] provided 1 perfect and 1 imperfect interpolant sequences
[2023-12-25 19:36:46,738 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2023-12-25 19:36:46,739 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10
[2023-12-25 19:36:46,739 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1905247518]
[2023-12-25 19:36:46,739 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 19:36:46,742 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-12-25 19:36:46,742 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 19:36:46,744 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-12-25 19:36:46,744 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90
[2023-12-25 19:36:46,745 INFO  L87              Difference]: Start difference. First operand 9355 states and 15577 transitions. Second operand  has 5 states, 5 states have (on average 1117.6) internal successors, (5588), 5 states have internal predecessors, (5588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 19:36:53,183 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 19:36:53,183 INFO  L93              Difference]: Finished difference Result 33784 states and 56035 transitions.
[2023-12-25 19:36:53,184 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2023-12-25 19:36:53,185 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 1117.6) internal successors, (5588), 5 states have internal predecessors, (5588), 0 states have call successors, (0), 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 6073
[2023-12-25 19:36:53,188 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 19:36:53,203 INFO  L225             Difference]: With dead ends: 33784
[2023-12-25 19:36:53,203 INFO  L226             Difference]: Without dead ends: 17616
[2023-12-25 19:36:53,214 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 12145 GetRequests, 12136 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110
[2023-12-25 19:36:53,214 INFO  L413           NwaCegarLoop]: 23905 mSDtfsCounter, 25509 mSDsluCounter, 34989 mSDsCounter, 0 mSdLazyCounter, 13130 mSolverCounterSat, 648 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25509 SdHoareTripleChecker+Valid, 58894 SdHoareTripleChecker+Invalid, 13778 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 648 IncrementalHoareTripleChecker+Valid, 13130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.0s IncrementalHoareTripleChecker+Time
[2023-12-25 19:36:53,214 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [25509 Valid, 58894 Invalid, 13778 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [648 Valid, 13130 Invalid, 0 Unknown, 0 Unchecked, 6.0s Time]
[2023-12-25 19:36:53,228 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 17616 states.
[2023-12-25 19:36:53,309 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 17616 to 9360.
[2023-12-25 19:36:53,316 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 9360 states, 9359 states have (on average 1.6651351640132492) internal successors, (15584), 9359 states have internal predecessors, (15584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 19:36:53,324 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 9360 states to 9360 states and 15584 transitions.
[2023-12-25 19:36:53,325 INFO  L78                 Accepts]: Start accepts. Automaton has 9360 states and 15584 transitions. Word has length 6073
[2023-12-25 19:36:53,327 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 19:36:53,327 INFO  L495      AbstractCegarLoop]: Abstraction has 9360 states and 15584 transitions.
[2023-12-25 19:36:53,328 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 1117.6) internal successors, (5588), 5 states have internal predecessors, (5588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 19:36:53,328 INFO  L276                IsEmpty]: Start isEmpty. Operand 9360 states and 15584 transitions.
[2023-12-25 19:36:53,504 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 6075
[2023-12-25 19:36:53,505 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 19:36:53,506 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-12-25 19:36:53,575 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Forceful destruction successful, exit code 0
[2023-12-25 19:36:53,725 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,SelfDestructingSolverStorable36
[2023-12-25 19:36:53,726 INFO  L420      AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 19:36:53,726 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 19:36:53,727 INFO  L85        PathProgramCache]: Analyzing trace with hash 223267940, now seen corresponding path program 1 times
[2023-12-25 19:36:53,727 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 19:36:53,727 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [36763285]
[2023-12-25 19:36:53,727 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 19:36:53,727 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 19:36:54,086 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 19:36:54,086 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [251391050]
[2023-12-25 19:36:54,087 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 19:36:54,087 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 19:36:54,087 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 19:36:54,088 INFO  L229       MonitoredProcess]: Starting monitored process 36 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-25 19:36:54,090 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process
[2023-12-25 19:37:00,318 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 19:37:00,491 INFO  L262         TraceCheckSpWp]: Trace formula consists of 26728 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-12-25 19:37:00,550 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 19:37:01,164 INFO  L134       CoverageAnalysis]: Checked inductivity of 546 backedges. 60 proven. 486 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-25 19:37:01,165 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-12-25 19:37:01,335 INFO  L134       CoverageAnalysis]: Checked inductivity of 546 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 484 trivial. 0 not checked.
[2023-12-25 19:37:01,336 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 19:37:01,336 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [36763285]
[2023-12-25 19:37:01,336 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 19:37:01,336 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [251391050]
[2023-12-25 19:37:01,336 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [251391050] provided 1 perfect and 1 imperfect interpolant sequences
[2023-12-25 19:37:01,336 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2023-12-25 19:37:01,337 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8] total 12
[2023-12-25 19:37:01,337 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [570648595]
[2023-12-25 19:37:01,337 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 19:37:01,340 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2023-12-25 19:37:01,340 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 19:37:01,342 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2023-12-25 19:37:01,342 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132
[2023-12-25 19:37:01,343 INFO  L87              Difference]: Start difference. First operand 9360 states and 15584 transitions. Second operand  has 6 states, 6 states have (on average 931.8333333333334) internal successors, (5591), 6 states have internal predecessors, (5591), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 19:37:14,185 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 19:37:14,185 INFO  L93              Difference]: Finished difference Result 42225 states and 70082 transitions.
[2023-12-25 19:37:14,185 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. 
[2023-12-25 19:37:14,186 INFO  L78                 Accepts]: Start accepts. Automaton has  has 6 states, 6 states have (on average 931.8333333333334) internal successors, (5591), 6 states have internal predecessors, (5591), 0 states have call successors, (0), 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 6074
[2023-12-25 19:37:14,190 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 19:37:14,216 INFO  L225             Difference]: With dead ends: 42225
[2023-12-25 19:37:14,216 INFO  L226             Difference]: Without dead ends: 26037
[2023-12-25 19:37:14,233 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 12148 GetRequests, 12136 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182
[2023-12-25 19:37:14,233 INFO  L413           NwaCegarLoop]: 23899 mSDtfsCounter, 51078 mSDsluCounter, 57386 mSDsCounter, 0 mSdLazyCounter, 20276 mSolverCounterSat, 651 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51078 SdHoareTripleChecker+Valid, 81285 SdHoareTripleChecker+Invalid, 20927 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 651 IncrementalHoareTripleChecker+Valid, 20276 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.1s IncrementalHoareTripleChecker+Time
[2023-12-25 19:37:14,233 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [51078 Valid, 81285 Invalid, 20927 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [651 Valid, 20276 Invalid, 0 Unknown, 0 Unchecked, 12.1s Time]
[2023-12-25 19:37:14,251 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 26037 states.
[2023-12-25 19:37:14,429 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 26037 to 9362.
[2023-12-25 19:37:14,436 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 9362 states, 9361 states have (on average 1.664993056297404) internal successors, (15586), 9361 states have internal predecessors, (15586), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 19:37:14,444 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 9362 states to 9362 states and 15586 transitions.
[2023-12-25 19:37:14,445 INFO  L78                 Accepts]: Start accepts. Automaton has 9362 states and 15586 transitions. Word has length 6074
[2023-12-25 19:37:14,447 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 19:37:14,447 INFO  L495      AbstractCegarLoop]: Abstraction has 9362 states and 15586 transitions.
[2023-12-25 19:37:14,448 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 6 states, 6 states have (on average 931.8333333333334) internal successors, (5591), 6 states have internal predecessors, (5591), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 19:37:14,448 INFO  L276                IsEmpty]: Start isEmpty. Operand 9362 states and 15586 transitions.
[2023-12-25 19:37:14,622 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 6076
[2023-12-25 19:37:14,622 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 19:37:14,623 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-12-25 19:37:14,689 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 19:37:14,852 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,SelfDestructingSolverStorable37
[2023-12-25 19:37:14,852 INFO  L420      AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 19:37:14,853 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 19:37:14,853 INFO  L85        PathProgramCache]: Analyzing trace with hash -3227762, now seen corresponding path program 1 times
[2023-12-25 19:37:14,853 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 19:37:14,853 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [734415314]
[2023-12-25 19:37:14,854 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 19:37:14,854 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 19:37:15,202 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 19:37:15,202 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2075651685]
[2023-12-25 19:37:15,204 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 19:37:15,204 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 19:37:15,204 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 19:37:15,205 INFO  L229       MonitoredProcess]: Starting monitored process 37 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-25 19:37:15,206 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process
[2023-12-25 19:37:21,155 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 19:37:21,325 INFO  L262         TraceCheckSpWp]: Trace formula consists of 26732 conjuncts, 17 conjunts are in the unsatisfiable core
[2023-12-25 19:37:21,383 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 19:37:21,906 INFO  L134       CoverageAnalysis]: Checked inductivity of 546 backedges. 62 proven. 484 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-25 19:37:21,906 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-12-25 19:37:22,055 INFO  L134       CoverageAnalysis]: Checked inductivity of 546 backedges. 66 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked.
[2023-12-25 19:37:22,055 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 19:37:22,055 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [734415314]
[2023-12-25 19:37:22,055 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 19:37:22,055 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2075651685]
[2023-12-25 19:37:22,056 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [2075651685] provided 1 perfect and 1 imperfect interpolant sequences
[2023-12-25 19:37:22,056 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2023-12-25 19:37:22,057 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10
[2023-12-25 19:37:22,057 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [120824214]
[2023-12-25 19:37:22,057 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 19:37:22,060 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-12-25 19:37:22,060 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 19:37:22,062 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-12-25 19:37:22,062 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90
[2023-12-25 19:37:22,063 INFO  L87              Difference]: Start difference. First operand 9362 states and 15586 transitions. Second operand  has 5 states, 5 states have (on average 1119.2) internal successors, (5596), 5 states have internal predecessors, (5596), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 19:37:29,164 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 19:37:29,164 INFO  L93              Difference]: Finished difference Result 33816 states and 56077 transitions.
[2023-12-25 19:37:29,164 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2023-12-25 19:37:29,165 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 1119.2) internal successors, (5596), 5 states have internal predecessors, (5596), 0 states have call successors, (0), 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 6075
[2023-12-25 19:37:29,169 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 19:37:29,184 INFO  L225             Difference]: With dead ends: 33816
[2023-12-25 19:37:29,184 INFO  L226             Difference]: Without dead ends: 17621
[2023-12-25 19:37:29,195 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 12149 GetRequests, 12140 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110
[2023-12-25 19:37:29,195 INFO  L413           NwaCegarLoop]: 23884 mSDtfsCounter, 37291 mSDsluCounter, 23152 mSDsCounter, 0 mSdLazyCounter, 9590 mSolverCounterSat, 648 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37291 SdHoareTripleChecker+Valid, 47036 SdHoareTripleChecker+Invalid, 10238 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 648 IncrementalHoareTripleChecker+Valid, 9590 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.7s IncrementalHoareTripleChecker+Time
[2023-12-25 19:37:29,196 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [37291 Valid, 47036 Invalid, 10238 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [648 Valid, 9590 Invalid, 0 Unknown, 0 Unchecked, 6.7s Time]
[2023-12-25 19:37:29,207 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 17621 states.
[2023-12-25 19:37:29,286 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 17621 to 9367.
[2023-12-25 19:37:29,293 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 9367 states, 9366 states have (on average 1.6648515908605594) internal successors, (15593), 9366 states have internal predecessors, (15593), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 19:37:29,301 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 9367 states to 9367 states and 15593 transitions.
[2023-12-25 19:37:29,302 INFO  L78                 Accepts]: Start accepts. Automaton has 9367 states and 15593 transitions. Word has length 6075
[2023-12-25 19:37:29,304 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 19:37:29,304 INFO  L495      AbstractCegarLoop]: Abstraction has 9367 states and 15593 transitions.
[2023-12-25 19:37:29,305 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 1119.2) internal successors, (5596), 5 states have internal predecessors, (5596), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 19:37:29,305 INFO  L276                IsEmpty]: Start isEmpty. Operand 9367 states and 15593 transitions.
[2023-12-25 19:37:29,480 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 6077
[2023-12-25 19:37:29,480 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 19:37:29,481 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-12-25 19:37:29,548 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Forceful destruction successful, exit code 0
[2023-12-25 19:37:29,696 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,SelfDestructingSolverStorable38
[2023-12-25 19:37:29,696 INFO  L420      AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 19:37:29,697 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 19:37:29,697 INFO  L85        PathProgramCache]: Analyzing trace with hash 1594956338, now seen corresponding path program 1 times
[2023-12-25 19:37:29,697 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 19:37:29,697 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [873628046]
[2023-12-25 19:37:29,698 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 19:37:29,698 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 19:37:30,079 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 19:37:30,079 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [619785832]
[2023-12-25 19:37:30,080 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 19:37:30,080 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 19:37:30,080 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 19:37:30,081 INFO  L229       MonitoredProcess]: Starting monitored process 38 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-25 19:37:30,082 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process
[2023-12-25 19:37:35,944 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 19:37:36,124 INFO  L262         TraceCheckSpWp]: Trace formula consists of 26735 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-12-25 19:37:36,187 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 19:37:36,777 INFO  L134       CoverageAnalysis]: Checked inductivity of 546 backedges. 66 proven. 480 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-25 19:37:36,777 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-12-25 19:37:36,923 INFO  L134       CoverageAnalysis]: Checked inductivity of 546 backedges. 70 proven. 0 refuted. 0 times theorem prover too weak. 476 trivial. 0 not checked.
[2023-12-25 19:37:36,924 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 19:37:36,924 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [873628046]
[2023-12-25 19:37:36,924 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 19:37:36,924 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [619785832]
[2023-12-25 19:37:36,924 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [619785832] provided 1 perfect and 1 imperfect interpolant sequences
[2023-12-25 19:37:36,924 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2023-12-25 19:37:36,925 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8] total 12
[2023-12-25 19:37:36,925 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [108237706]
[2023-12-25 19:37:36,925 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 19:37:36,928 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2023-12-25 19:37:36,928 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 19:37:36,930 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2023-12-25 19:37:36,930 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132
[2023-12-25 19:37:36,930 INFO  L87              Difference]: Start difference. First operand 9367 states and 15593 transitions. Second operand  has 6 states, 6 states have (on average 933.5) internal successors, (5601), 6 states have internal predecessors, (5601), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 19:37:49,494 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 19:37:49,494 INFO  L93              Difference]: Finished difference Result 42278 states and 70155 transitions.
[2023-12-25 19:37:49,495 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. 
[2023-12-25 19:37:49,496 INFO  L78                 Accepts]: Start accepts. Automaton has  has 6 states, 6 states have (on average 933.5) internal successors, (5601), 6 states have internal predecessors, (5601), 0 states have call successors, (0), 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 6076
[2023-12-25 19:37:49,501 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 19:37:49,532 INFO  L225             Difference]: With dead ends: 42278
[2023-12-25 19:37:49,532 INFO  L226             Difference]: Without dead ends: 26060
[2023-12-25 19:37:49,550 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 12153 GetRequests, 12140 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210
[2023-12-25 19:37:49,550 INFO  L413           NwaCegarLoop]: 23874 mSDtfsCounter, 39312 mSDsluCounter, 68486 mSDsCounter, 0 mSdLazyCounter, 22848 mSolverCounterSat, 651 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39312 SdHoareTripleChecker+Valid, 92360 SdHoareTripleChecker+Invalid, 23499 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 651 IncrementalHoareTripleChecker+Valid, 22848 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.8s IncrementalHoareTripleChecker+Time
[2023-12-25 19:37:49,550 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [39312 Valid, 92360 Invalid, 23499 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [651 Valid, 22848 Invalid, 0 Unknown, 0 Unchecked, 11.8s Time]
[2023-12-25 19:37:49,574 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 26060 states.
[2023-12-25 19:37:49,705 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 26060 to 9372.
[2023-12-25 19:37:49,714 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 9372 states, 9371 states have (on average 1.6647102763845907) internal successors, (15600), 9371 states have internal predecessors, (15600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 19:37:49,724 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 9372 states to 9372 states and 15600 transitions.
[2023-12-25 19:37:49,724 INFO  L78                 Accepts]: Start accepts. Automaton has 9372 states and 15600 transitions. Word has length 6076
[2023-12-25 19:37:49,814 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 19:37:49,814 INFO  L495      AbstractCegarLoop]: Abstraction has 9372 states and 15600 transitions.
[2023-12-25 19:37:49,815 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 6 states, 6 states have (on average 933.5) internal successors, (5601), 6 states have internal predecessors, (5601), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 19:37:49,815 INFO  L276                IsEmpty]: Start isEmpty. Operand 9372 states and 15600 transitions.
[2023-12-25 19:37:49,990 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 6078
[2023-12-25 19:37:49,990 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 19:37:49,991 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-12-25 19:37:50,066 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Forceful destruction successful, exit code 0
[2023-12-25 19:37:50,204 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39
[2023-12-25 19:37:50,204 INFO  L420      AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 19:37:50,205 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 19:37:50,206 INFO  L85        PathProgramCache]: Analyzing trace with hash -321371068, now seen corresponding path program 1 times
[2023-12-25 19:37:50,206 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 19:37:50,206 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1433889321]
[2023-12-25 19:37:50,206 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 19:37:50,206 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 19:37:50,571 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 19:37:50,571 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1248697204]
[2023-12-25 19:37:50,572 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 19:37:50,573 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 19:37:50,573 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 19:37:50,573 INFO  L229       MonitoredProcess]: Starting monitored process 39 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-25 19:37:50,574 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process
[2023-12-25 19:37:56,810 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 19:37:56,970 INFO  L262         TraceCheckSpWp]: Trace formula consists of 26739 conjuncts, 17 conjunts are in the unsatisfiable core
[2023-12-25 19:37:57,022 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 19:37:57,517 INFO  L134       CoverageAnalysis]: Checked inductivity of 546 backedges. 70 proven. 476 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-25 19:37:57,517 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-12-25 19:37:57,664 INFO  L134       CoverageAnalysis]: Checked inductivity of 546 backedges. 74 proven. 0 refuted. 0 times theorem prover too weak. 472 trivial. 0 not checked.
[2023-12-25 19:37:57,665 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 19:37:57,665 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1433889321]
[2023-12-25 19:37:57,665 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 19:37:57,665 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1248697204]
[2023-12-25 19:37:57,665 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1248697204] provided 1 perfect and 1 imperfect interpolant sequences
[2023-12-25 19:37:57,665 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2023-12-25 19:37:57,666 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10
[2023-12-25 19:37:57,666 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [401840632]
[2023-12-25 19:37:57,666 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 19:37:57,669 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-12-25 19:37:57,669 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 19:37:57,671 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-12-25 19:37:57,671 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90
[2023-12-25 19:37:57,672 INFO  L87              Difference]: Start difference. First operand 9372 states and 15600 transitions. Second operand  has 5 states, 5 states have (on average 1121.2) internal successors, (5606), 5 states have internal predecessors, (5606), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 19:38:04,651 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 19:38:04,652 INFO  L93              Difference]: Finished difference Result 33867 states and 56150 transitions.
[2023-12-25 19:38:04,652 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2023-12-25 19:38:04,653 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 1121.2) internal successors, (5606), 5 states have internal predecessors, (5606), 0 states have call successors, (0), 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 6077
[2023-12-25 19:38:04,657 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 19:38:04,668 INFO  L225             Difference]: With dead ends: 33867
[2023-12-25 19:38:04,668 INFO  L226             Difference]: Without dead ends: 17629
[2023-12-25 19:38:04,673 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 12153 GetRequests, 12144 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110
[2023-12-25 19:38:04,673 INFO  L413           NwaCegarLoop]: 23858 mSDtfsCounter, 25479 mSDsluCounter, 34943 mSDsCounter, 0 mSdLazyCounter, 13106 mSolverCounterSat, 648 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25479 SdHoareTripleChecker+Valid, 58801 SdHoareTripleChecker+Invalid, 13754 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 648 IncrementalHoareTripleChecker+Valid, 13106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.4s IncrementalHoareTripleChecker+Time
[2023-12-25 19:38:04,674 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [25479 Valid, 58801 Invalid, 13754 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [648 Valid, 13106 Invalid, 0 Unknown, 0 Unchecked, 6.4s Time]
[2023-12-25 19:38:04,685 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 17629 states.
[2023-12-25 19:38:04,756 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 17629 to 9377.
[2023-12-25 19:38:04,764 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 9377 states, 9376 states have (on average 1.6645691126279865) internal successors, (15607), 9376 states have internal predecessors, (15607), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 19:38:04,773 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 9377 states to 9377 states and 15607 transitions.
[2023-12-25 19:38:04,774 INFO  L78                 Accepts]: Start accepts. Automaton has 9377 states and 15607 transitions. Word has length 6077
[2023-12-25 19:38:04,776 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 19:38:04,776 INFO  L495      AbstractCegarLoop]: Abstraction has 9377 states and 15607 transitions.
[2023-12-25 19:38:04,777 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 1121.2) internal successors, (5606), 5 states have internal predecessors, (5606), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 19:38:04,777 INFO  L276                IsEmpty]: Start isEmpty. Operand 9377 states and 15607 transitions.
[2023-12-25 19:38:04,954 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 6079
[2023-12-25 19:38:04,955 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 19:38:04,956 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-12-25 19:38:05,025 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Forceful destruction successful, exit code 0
[2023-12-25 19:38:05,172 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,SelfDestructingSolverStorable40
[2023-12-25 19:38:05,173 INFO  L420      AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 19:38:05,173 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 19:38:05,173 INFO  L85        PathProgramCache]: Analyzing trace with hash -623678592, now seen corresponding path program 1 times
[2023-12-25 19:38:05,173 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 19:38:05,173 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1457536066]
[2023-12-25 19:38:05,174 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 19:38:05,174 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 19:38:05,518 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 19:38:05,518 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1997839721]
[2023-12-25 19:38:05,519 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 19:38:05,519 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 19:38:05,519 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 19:38:05,521 INFO  L229       MonitoredProcess]: Starting monitored process 40 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-25 19:38:05,523 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process
[2023-12-25 19:38:11,759 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 19:38:11,938 INFO  L262         TraceCheckSpWp]: Trace formula consists of 26742 conjuncts, 17 conjunts are in the unsatisfiable core
[2023-12-25 19:38:11,987 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 19:38:12,608 INFO  L134       CoverageAnalysis]: Checked inductivity of 546 backedges. 74 proven. 472 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-25 19:38:12,608 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-12-25 19:38:12,781 INFO  L134       CoverageAnalysis]: Checked inductivity of 546 backedges. 78 proven. 0 refuted. 0 times theorem prover too weak. 468 trivial. 0 not checked.
[2023-12-25 19:38:12,781 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 19:38:12,781 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1457536066]
[2023-12-25 19:38:12,781 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 19:38:12,781 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1997839721]
[2023-12-25 19:38:12,781 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1997839721] provided 1 perfect and 1 imperfect interpolant sequences
[2023-12-25 19:38:12,781 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2023-12-25 19:38:12,782 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10
[2023-12-25 19:38:12,782 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1424822082]
[2023-12-25 19:38:12,782 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 19:38:12,785 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-12-25 19:38:12,785 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 19:38:12,787 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-12-25 19:38:12,787 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90
[2023-12-25 19:38:12,788 INFO  L87              Difference]: Start difference. First operand 9377 states and 15607 transitions. Second operand  has 5 states, 5 states have (on average 1122.2) internal successors, (5611), 5 states have internal predecessors, (5611), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 19:38:19,971 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 19:38:19,971 INFO  L93              Difference]: Finished difference Result 33891 states and 56184 transitions.
[2023-12-25 19:38:19,971 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2023-12-25 19:38:19,972 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 1122.2) internal successors, (5611), 5 states have internal predecessors, (5611), 0 states have call successors, (0), 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 6078
[2023-12-25 19:38:19,976 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 19:38:19,990 INFO  L225             Difference]: With dead ends: 33891
[2023-12-25 19:38:19,990 INFO  L226             Difference]: Without dead ends: 17633
[2023-12-25 19:38:19,999 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 12155 GetRequests, 12146 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110
[2023-12-25 19:38:19,999 INFO  L413           NwaCegarLoop]: 23845 mSDtfsCounter, 37255 mSDsluCounter, 23134 mSDsCounter, 0 mSdLazyCounter, 9578 mSolverCounterSat, 648 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37255 SdHoareTripleChecker+Valid, 46979 SdHoareTripleChecker+Invalid, 10226 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 648 IncrementalHoareTripleChecker+Valid, 9578 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.7s IncrementalHoareTripleChecker+Time
[2023-12-25 19:38:20,000 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [37255 Valid, 46979 Invalid, 10226 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [648 Valid, 9578 Invalid, 0 Unknown, 0 Unchecked, 6.7s Time]
[2023-12-25 19:38:20,013 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 17633 states.
[2023-12-25 19:38:20,095 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 17633 to 9382.
[2023-12-25 19:38:20,102 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 9382 states, 9381 states have (on average 1.6644280993497496) internal successors, (15614), 9381 states have internal predecessors, (15614), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 19:38:20,111 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 9382 states to 9382 states and 15614 transitions.
[2023-12-25 19:38:20,112 INFO  L78                 Accepts]: Start accepts. Automaton has 9382 states and 15614 transitions. Word has length 6078
[2023-12-25 19:38:20,115 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 19:38:20,115 INFO  L495      AbstractCegarLoop]: Abstraction has 9382 states and 15614 transitions.
[2023-12-25 19:38:20,116 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 1122.2) internal successors, (5611), 5 states have internal predecessors, (5611), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 19:38:20,116 INFO  L276                IsEmpty]: Start isEmpty. Operand 9382 states and 15614 transitions.
[2023-12-25 19:38:20,294 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 6080
[2023-12-25 19:38:20,294 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 19:38:20,295 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-12-25 19:38:20,372 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Ended with exit code 0
[2023-12-25 19:38:20,508 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,SelfDestructingSolverStorable41
[2023-12-25 19:38:20,508 INFO  L420      AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 19:38:20,509 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 19:38:20,509 INFO  L85        PathProgramCache]: Analyzing trace with hash -1522724742, now seen corresponding path program 1 times
[2023-12-25 19:38:20,509 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 19:38:20,509 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1617007840]
[2023-12-25 19:38:20,510 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 19:38:20,510 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 19:38:20,940 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 19:38:20,941 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [933672361]
[2023-12-25 19:38:20,942 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 19:38:20,942 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 19:38:20,942 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 19:38:20,943 INFO  L229       MonitoredProcess]: Starting monitored process 41 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-25 19:38:20,945 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Waiting until timeout for monitored process
[2023-12-25 19:38:27,299 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 19:38:27,462 INFO  L262         TraceCheckSpWp]: Trace formula consists of 26746 conjuncts, 17 conjunts are in the unsatisfiable core
[2023-12-25 19:38:27,518 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 19:38:28,219 INFO  L134       CoverageAnalysis]: Checked inductivity of 546 backedges. 78 proven. 468 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-25 19:38:28,219 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-12-25 19:38:28,411 INFO  L134       CoverageAnalysis]: Checked inductivity of 546 backedges. 82 proven. 0 refuted. 0 times theorem prover too weak. 464 trivial. 0 not checked.
[2023-12-25 19:38:28,412 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 19:38:28,412 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1617007840]
[2023-12-25 19:38:28,412 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 19:38:28,412 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [933672361]
[2023-12-25 19:38:28,412 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [933672361] provided 1 perfect and 1 imperfect interpolant sequences
[2023-12-25 19:38:28,412 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2023-12-25 19:38:28,413 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10
[2023-12-25 19:38:28,413 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [772700443]
[2023-12-25 19:38:28,413 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 19:38:28,416 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-12-25 19:38:28,417 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 19:38:28,420 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-12-25 19:38:28,420 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90
[2023-12-25 19:38:28,421 INFO  L87              Difference]: Start difference. First operand 9382 states and 15614 transitions. Second operand  has 5 states, 5 states have (on average 1123.2) internal successors, (5616), 5 states have internal predecessors, (5616), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 19:38:34,534 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 19:38:34,534 INFO  L93              Difference]: Finished difference Result 33915 states and 56218 transitions.
[2023-12-25 19:38:34,534 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2023-12-25 19:38:34,535 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 1123.2) internal successors, (5616), 5 states have internal predecessors, (5616), 0 states have call successors, (0), 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 6079
[2023-12-25 19:38:34,539 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 19:38:34,550 INFO  L225             Difference]: With dead ends: 33915
[2023-12-25 19:38:34,550 INFO  L226             Difference]: Without dead ends: 17637
[2023-12-25 19:38:34,555 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 12157 GetRequests, 12148 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110
[2023-12-25 19:38:34,560 INFO  L413           NwaCegarLoop]: 23832 mSDtfsCounter, 37243 mSDsluCounter, 23128 mSDsCounter, 0 mSdLazyCounter, 9574 mSolverCounterSat, 648 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37243 SdHoareTripleChecker+Valid, 46960 SdHoareTripleChecker+Invalid, 10222 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 648 IncrementalHoareTripleChecker+Valid, 9574 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.7s IncrementalHoareTripleChecker+Time
[2023-12-25 19:38:34,560 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [37243 Valid, 46960 Invalid, 10222 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [648 Valid, 9574 Invalid, 0 Unknown, 0 Unchecked, 5.7s Time]
[2023-12-25 19:38:34,570 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 17637 states.
[2023-12-25 19:38:34,633 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 17637 to 9387.
[2023-12-25 19:38:34,640 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 9387 states, 9386 states have (on average 1.664287236309397) internal successors, (15621), 9386 states have internal predecessors, (15621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 19:38:34,648 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 9387 states to 9387 states and 15621 transitions.
[2023-12-25 19:38:34,649 INFO  L78                 Accepts]: Start accepts. Automaton has 9387 states and 15621 transitions. Word has length 6079
[2023-12-25 19:38:34,651 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 19:38:34,652 INFO  L495      AbstractCegarLoop]: Abstraction has 9387 states and 15621 transitions.
[2023-12-25 19:38:34,653 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 1123.2) internal successors, (5616), 5 states have internal predecessors, (5616), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 19:38:34,653 INFO  L276                IsEmpty]: Start isEmpty. Operand 9387 states and 15621 transitions.
[2023-12-25 19:38:34,829 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 6081
[2023-12-25 19:38:34,829 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 19:38:34,830 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-12-25 19:38:34,905 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Forceful destruction successful, exit code 0
[2023-12-25 19:38:35,030 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,SelfDestructingSolverStorable42
[2023-12-25 19:38:35,031 INFO  L420      AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 19:38:35,031 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 19:38:35,032 INFO  L85        PathProgramCache]: Analyzing trace with hash 1168121934, now seen corresponding path program 1 times
[2023-12-25 19:38:35,032 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 19:38:35,032 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [34347843]
[2023-12-25 19:38:35,032 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 19:38:35,032 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 19:38:35,421 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 19:38:35,421 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [27687279]
[2023-12-25 19:38:35,422 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 19:38:35,422 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 19:38:35,423 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 19:38:35,423 INFO  L229       MonitoredProcess]: Starting monitored process 42 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-25 19:38:35,425 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Waiting until timeout for monitored process
[2023-12-25 19:38:41,312 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 19:38:41,487 INFO  L262         TraceCheckSpWp]: Trace formula consists of 26749 conjuncts, 17 conjunts are in the unsatisfiable core
[2023-12-25 19:38:41,697 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 19:38:42,220 INFO  L134       CoverageAnalysis]: Checked inductivity of 546 backedges. 82 proven. 464 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-25 19:38:42,220 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-12-25 19:38:42,389 INFO  L134       CoverageAnalysis]: Checked inductivity of 546 backedges. 86 proven. 0 refuted. 0 times theorem prover too weak. 460 trivial. 0 not checked.
[2023-12-25 19:38:42,389 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 19:38:42,389 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [34347843]
[2023-12-25 19:38:42,389 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 19:38:42,389 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [27687279]
[2023-12-25 19:38:42,389 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [27687279] provided 1 perfect and 1 imperfect interpolant sequences
[2023-12-25 19:38:42,389 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2023-12-25 19:38:42,390 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10
[2023-12-25 19:38:42,390 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [616258991]
[2023-12-25 19:38:42,391 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 19:38:42,393 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-12-25 19:38:42,393 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 19:38:42,395 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-12-25 19:38:42,395 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90
[2023-12-25 19:38:42,396 INFO  L87              Difference]: Start difference. First operand 9387 states and 15621 transitions. Second operand  has 5 states, 5 states have (on average 1124.2) internal successors, (5621), 5 states have internal predecessors, (5621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 19:38:48,563 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 19:38:48,563 INFO  L93              Difference]: Finished difference Result 33939 states and 56252 transitions.
[2023-12-25 19:38:48,564 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2023-12-25 19:38:48,565 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 1124.2) internal successors, (5621), 5 states have internal predecessors, (5621), 0 states have call successors, (0), 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 6080
[2023-12-25 19:38:48,569 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 19:38:48,583 INFO  L225             Difference]: With dead ends: 33939
[2023-12-25 19:38:48,584 INFO  L226             Difference]: Without dead ends: 17641
[2023-12-25 19:38:48,593 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 12159 GetRequests, 12150 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110
[2023-12-25 19:38:48,594 INFO  L413           NwaCegarLoop]: 23819 mSDtfsCounter, 25455 mSDsluCounter, 34907 mSDsCounter, 0 mSdLazyCounter, 13082 mSolverCounterSat, 648 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25455 SdHoareTripleChecker+Valid, 58726 SdHoareTripleChecker+Invalid, 13730 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 648 IncrementalHoareTripleChecker+Valid, 13082 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.7s IncrementalHoareTripleChecker+Time
[2023-12-25 19:38:48,594 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [25455 Valid, 58726 Invalid, 13730 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [648 Valid, 13082 Invalid, 0 Unknown, 0 Unchecked, 5.7s Time]
[2023-12-25 19:38:48,606 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 17641 states.
[2023-12-25 19:38:48,691 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 17641 to 9392.
[2023-12-25 19:38:48,699 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 9392 states, 9391 states have (on average 1.6641465232669577) internal successors, (15628), 9391 states have internal predecessors, (15628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 19:38:48,709 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 9392 states to 9392 states and 15628 transitions.
[2023-12-25 19:38:48,709 INFO  L78                 Accepts]: Start accepts. Automaton has 9392 states and 15628 transitions. Word has length 6080
[2023-12-25 19:38:48,711 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 19:38:48,712 INFO  L495      AbstractCegarLoop]: Abstraction has 9392 states and 15628 transitions.
[2023-12-25 19:38:48,712 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 1124.2) internal successors, (5621), 5 states have internal predecessors, (5621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 19:38:48,712 INFO  L276                IsEmpty]: Start isEmpty. Operand 9392 states and 15628 transitions.
[2023-12-25 19:38:48,889 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 6082
[2023-12-25 19:38:48,889 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 19:38:48,890 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 19:38:48,967 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 19:38:49,104 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43,42 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 19:38:49,104 INFO  L420      AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 19:38:49,104 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 19:38:49,105 INFO  L85        PathProgramCache]: Analyzing trace with hash 1101595696, now seen corresponding path program 1 times
[2023-12-25 19:38:49,105 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 19:38:49,105 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [784309666]
[2023-12-25 19:38:49,105 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 19:38:49,105 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 19:38:49,476 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 19:38:49,477 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1202547265]
[2023-12-25 19:38:49,478 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 19:38:49,478 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 19:38:49,478 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 19:38:49,479 INFO  L229       MonitoredProcess]: Starting monitored process 43 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-25 19:38:49,480 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Waiting until timeout for monitored process
[2023-12-25 19:38:55,395 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 19:38:55,566 INFO  L262         TraceCheckSpWp]: Trace formula consists of 26753 conjuncts, 17 conjunts are in the unsatisfiable core
[2023-12-25 19:38:55,624 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 19:38:56,034 INFO  L134       CoverageAnalysis]: Checked inductivity of 546 backedges. 86 proven. 460 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-25 19:38:56,035 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-12-25 19:38:56,173 INFO  L134       CoverageAnalysis]: Checked inductivity of 546 backedges. 90 proven. 0 refuted. 0 times theorem prover too weak. 456 trivial. 0 not checked.
[2023-12-25 19:38:56,174 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 19:38:56,174 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [784309666]
[2023-12-25 19:38:56,174 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 19:38:56,174 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1202547265]
[2023-12-25 19:38:56,174 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1202547265] provided 1 perfect and 1 imperfect interpolant sequences
[2023-12-25 19:38:56,174 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2023-12-25 19:38:56,175 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10
[2023-12-25 19:38:56,175 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [981272235]
[2023-12-25 19:38:56,175 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 19:38:56,177 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-12-25 19:38:56,178 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 19:38:56,179 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-12-25 19:38:56,180 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90
[2023-12-25 19:38:56,180 INFO  L87              Difference]: Start difference. First operand 9392 states and 15628 transitions. Second operand  has 5 states, 5 states have (on average 1125.2) internal successors, (5626), 5 states have internal predecessors, (5626), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 19:39:02,936 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 19:39:02,936 INFO  L93              Difference]: Finished difference Result 33963 states and 56286 transitions.
[2023-12-25 19:39:02,937 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2023-12-25 19:39:02,938 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 1125.2) internal successors, (5626), 5 states have internal predecessors, (5626), 0 states have call successors, (0), 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 6081
[2023-12-25 19:39:02,942 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 19:39:02,957 INFO  L225             Difference]: With dead ends: 33963
[2023-12-25 19:39:02,958 INFO  L226             Difference]: Without dead ends: 17645
[2023-12-25 19:39:02,971 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 12161 GetRequests, 12152 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110
[2023-12-25 19:39:02,971 INFO  L413           NwaCegarLoop]: 23806 mSDtfsCounter, 25447 mSDsluCounter, 34895 mSDsCounter, 0 mSdLazyCounter, 13074 mSolverCounterSat, 648 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25447 SdHoareTripleChecker+Valid, 58701 SdHoareTripleChecker+Invalid, 13722 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 648 IncrementalHoareTripleChecker+Valid, 13074 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.3s IncrementalHoareTripleChecker+Time
[2023-12-25 19:39:02,971 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [25447 Valid, 58701 Invalid, 13722 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [648 Valid, 13074 Invalid, 0 Unknown, 0 Unchecked, 6.3s Time]
[2023-12-25 19:39:02,987 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 17645 states.
[2023-12-25 19:39:03,083 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 17645 to 9397.
[2023-12-25 19:39:03,090 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 9397 states, 9396 states have (on average 1.6640059599829715) internal successors, (15635), 9396 states have internal predecessors, (15635), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 19:39:03,099 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 9397 states to 9397 states and 15635 transitions.
[2023-12-25 19:39:03,099 INFO  L78                 Accepts]: Start accepts. Automaton has 9397 states and 15635 transitions. Word has length 6081
[2023-12-25 19:39:03,102 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 19:39:03,102 INFO  L495      AbstractCegarLoop]: Abstraction has 9397 states and 15635 transitions.
[2023-12-25 19:39:03,103 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 1125.2) internal successors, (5626), 5 states have internal predecessors, (5626), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 19:39:03,103 INFO  L276                IsEmpty]: Start isEmpty. Operand 9397 states and 15635 transitions.
[2023-12-25 19:39:03,279 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 6083
[2023-12-25 19:39:03,279 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 19:39:03,280 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-12-25 19:39:03,356 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Forceful destruction successful, exit code 0
[2023-12-25 19:39:03,494 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44,43 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 19:39:03,495 INFO  L420      AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 19:39:03,495 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 19:39:03,496 INFO  L85        PathProgramCache]: Analyzing trace with hash 534354076, now seen corresponding path program 1 times
[2023-12-25 19:39:03,496 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 19:39:03,496 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1684589867]
[2023-12-25 19:39:03,496 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 19:39:03,497 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 19:39:03,883 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 19:39:03,884 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1320081847]
[2023-12-25 19:39:03,885 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 19:39:03,885 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 19:39:03,885 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 19:39:03,886 INFO  L229       MonitoredProcess]: Starting monitored process 44 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-25 19:39:03,888 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Waiting until timeout for monitored process
[2023-12-25 19:39:09,806 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 19:39:09,984 INFO  L262         TraceCheckSpWp]: Trace formula consists of 26756 conjuncts, 17 conjunts are in the unsatisfiable core
[2023-12-25 19:39:10,048 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 19:39:10,540 INFO  L134       CoverageAnalysis]: Checked inductivity of 546 backedges. 90 proven. 456 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-25 19:39:10,540 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-12-25 19:39:10,716 INFO  L134       CoverageAnalysis]: Checked inductivity of 546 backedges. 94 proven. 0 refuted. 0 times theorem prover too weak. 452 trivial. 0 not checked.
[2023-12-25 19:39:10,716 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 19:39:10,716 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1684589867]
[2023-12-25 19:39:10,717 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 19:39:10,717 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1320081847]
[2023-12-25 19:39:10,717 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1320081847] provided 1 perfect and 1 imperfect interpolant sequences
[2023-12-25 19:39:10,717 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2023-12-25 19:39:10,718 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10
[2023-12-25 19:39:10,718 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1772019387]
[2023-12-25 19:39:10,718 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 19:39:10,720 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-12-25 19:39:10,720 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 19:39:10,722 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-12-25 19:39:10,722 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90
[2023-12-25 19:39:10,723 INFO  L87              Difference]: Start difference. First operand 9397 states and 15635 transitions. Second operand  has 5 states, 5 states have (on average 1126.2) internal successors, (5631), 5 states have internal predecessors, (5631), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 19:39:18,555 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 19:39:18,555 INFO  L93              Difference]: Finished difference Result 33987 states and 56320 transitions.
[2023-12-25 19:39:18,555 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2023-12-25 19:39:18,556 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 1126.2) internal successors, (5631), 5 states have internal predecessors, (5631), 0 states have call successors, (0), 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 6082
[2023-12-25 19:39:18,560 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 19:39:18,574 INFO  L225             Difference]: With dead ends: 33987
[2023-12-25 19:39:18,574 INFO  L226             Difference]: Without dead ends: 17649
[2023-12-25 19:39:18,586 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 12163 GetRequests, 12154 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110
[2023-12-25 19:39:18,586 INFO  L413           NwaCegarLoop]: 23793 mSDtfsCounter, 25439 mSDsluCounter, 34883 mSDsCounter, 0 mSdLazyCounter, 13066 mSolverCounterSat, 648 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25439 SdHoareTripleChecker+Valid, 58676 SdHoareTripleChecker+Invalid, 13714 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 648 IncrementalHoareTripleChecker+Valid, 13066 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.4s IncrementalHoareTripleChecker+Time
[2023-12-25 19:39:18,587 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [25439 Valid, 58676 Invalid, 13714 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [648 Valid, 13066 Invalid, 0 Unknown, 0 Unchecked, 7.4s Time]
[2023-12-25 19:39:18,600 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 17649 states.
[2023-12-25 19:39:18,685 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 17649 to 9402.
[2023-12-25 19:39:18,694 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 9402 states, 9401 states have (on average 1.6638655462184875) internal successors, (15642), 9401 states have internal predecessors, (15642), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 19:39:18,703 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 9402 states to 9402 states and 15642 transitions.
[2023-12-25 19:39:18,704 INFO  L78                 Accepts]: Start accepts. Automaton has 9402 states and 15642 transitions. Word has length 6082
[2023-12-25 19:39:18,707 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 19:39:18,707 INFO  L495      AbstractCegarLoop]: Abstraction has 9402 states and 15642 transitions.
[2023-12-25 19:39:18,707 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 1126.2) internal successors, (5631), 5 states have internal predecessors, (5631), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 19:39:18,708 INFO  L276                IsEmpty]: Start isEmpty. Operand 9402 states and 15642 transitions.
[2023-12-25 19:39:18,887 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 6084
[2023-12-25 19:39:18,887 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 19:39:18,889 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-12-25 19:39:18,966 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Forceful destruction successful, exit code 0
[2023-12-25 19:39:19,097 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,SelfDestructingSolverStorable45
[2023-12-25 19:39:19,097 INFO  L420      AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 19:39:19,097 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 19:39:19,098 INFO  L85        PathProgramCache]: Analyzing trace with hash -1163919514, now seen corresponding path program 1 times
[2023-12-25 19:39:19,098 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 19:39:19,098 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1577248192]
[2023-12-25 19:39:19,098 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 19:39:19,099 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 19:39:19,448 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 19:39:19,448 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1979237760]
[2023-12-25 19:39:19,450 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 19:39:19,450 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 19:39:19,450 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 19:39:19,451 INFO  L229       MonitoredProcess]: Starting monitored process 45 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-25 19:39:19,455 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Waiting until timeout for monitored process
[2023-12-25 19:39:25,685 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 19:39:25,868 INFO  L262         TraceCheckSpWp]: Trace formula consists of 26760 conjuncts, 17 conjunts are in the unsatisfiable core
[2023-12-25 19:39:25,931 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 19:39:26,612 INFO  L134       CoverageAnalysis]: Checked inductivity of 546 backedges. 94 proven. 452 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-25 19:39:26,612 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-12-25 19:39:26,809 INFO  L134       CoverageAnalysis]: Checked inductivity of 546 backedges. 98 proven. 0 refuted. 0 times theorem prover too weak. 448 trivial. 0 not checked.
[2023-12-25 19:39:26,809 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 19:39:26,809 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1577248192]
[2023-12-25 19:39:26,809 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 19:39:26,809 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1979237760]
[2023-12-25 19:39:26,809 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1979237760] provided 1 perfect and 1 imperfect interpolant sequences
[2023-12-25 19:39:26,809 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2023-12-25 19:39:26,810 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10
[2023-12-25 19:39:26,810 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [430028325]
[2023-12-25 19:39:26,810 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 19:39:26,813 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-12-25 19:39:26,813 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 19:39:26,815 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-12-25 19:39:26,816 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90
[2023-12-25 19:39:26,817 INFO  L87              Difference]: Start difference. First operand 9402 states and 15642 transitions. Second operand  has 5 states, 5 states have (on average 1127.2) internal successors, (5636), 5 states have internal predecessors, (5636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 19:39:33,554 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 19:39:33,554 INFO  L93              Difference]: Finished difference Result 34011 states and 56354 transitions.
[2023-12-25 19:39:33,555 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2023-12-25 19:39:33,556 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 1127.2) internal successors, (5636), 5 states have internal predecessors, (5636), 0 states have call successors, (0), 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 6083
[2023-12-25 19:39:33,559 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 19:39:33,571 INFO  L225             Difference]: With dead ends: 34011
[2023-12-25 19:39:33,571 INFO  L226             Difference]: Without dead ends: 17653
[2023-12-25 19:39:33,578 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 12165 GetRequests, 12156 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110
[2023-12-25 19:39:33,578 INFO  L413           NwaCegarLoop]: 23780 mSDtfsCounter, 25431 mSDsluCounter, 34871 mSDsCounter, 0 mSdLazyCounter, 13058 mSolverCounterSat, 648 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25431 SdHoareTripleChecker+Valid, 58651 SdHoareTripleChecker+Invalid, 13706 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 648 IncrementalHoareTripleChecker+Valid, 13058 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.3s IncrementalHoareTripleChecker+Time
[2023-12-25 19:39:33,578 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [25431 Valid, 58651 Invalid, 13706 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [648 Valid, 13058 Invalid, 0 Unknown, 0 Unchecked, 6.3s Time]
[2023-12-25 19:39:33,591 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 17653 states.
[2023-12-25 19:39:33,671 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 17653 to 9407.
[2023-12-25 19:39:33,681 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 9407 states, 9406 states have (on average 1.6637252817350627) internal successors, (15649), 9406 states have internal predecessors, (15649), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 19:39:33,691 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 9407 states to 9407 states and 15649 transitions.
[2023-12-25 19:39:33,691 INFO  L78                 Accepts]: Start accepts. Automaton has 9407 states and 15649 transitions. Word has length 6083
[2023-12-25 19:39:33,694 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 19:39:33,694 INFO  L495      AbstractCegarLoop]: Abstraction has 9407 states and 15649 transitions.
[2023-12-25 19:39:33,695 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 1127.2) internal successors, (5636), 5 states have internal predecessors, (5636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 19:39:33,695 INFO  L276                IsEmpty]: Start isEmpty. Operand 9407 states and 15649 transitions.
[2023-12-25 19:39:33,874 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 6085
[2023-12-25 19:39:33,874 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 19:39:33,875 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-12-25 19:39:33,964 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 19:39:34,098 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,SelfDestructingSolverStorable46
[2023-12-25 19:39:34,098 INFO  L420      AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 19:39:34,099 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 19:39:34,099 INFO  L85        PathProgramCache]: Analyzing trace with hash 1664758890, now seen corresponding path program 1 times
[2023-12-25 19:39:34,099 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 19:39:34,099 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [669493892]
[2023-12-25 19:39:34,100 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 19:39:34,100 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 19:39:34,476 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 19:39:34,477 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [397705078]
[2023-12-25 19:39:34,478 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 19:39:34,478 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 19:39:34,478 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 19:39:34,479 INFO  L229       MonitoredProcess]: Starting monitored process 46 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-25 19:39:34,481 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Waiting until timeout for monitored process
[2023-12-25 19:39:40,404 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 19:39:40,579 INFO  L262         TraceCheckSpWp]: Trace formula consists of 26763 conjuncts, 17 conjunts are in the unsatisfiable core
[2023-12-25 19:39:40,645 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 19:39:41,250 INFO  L134       CoverageAnalysis]: Checked inductivity of 546 backedges. 98 proven. 448 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-25 19:39:41,250 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-12-25 19:39:41,416 INFO  L134       CoverageAnalysis]: Checked inductivity of 546 backedges. 102 proven. 0 refuted. 0 times theorem prover too weak. 444 trivial. 0 not checked.
[2023-12-25 19:39:41,416 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 19:39:41,416 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [669493892]
[2023-12-25 19:39:41,416 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 19:39:41,416 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [397705078]
[2023-12-25 19:39:41,416 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [397705078] provided 1 perfect and 1 imperfect interpolant sequences
[2023-12-25 19:39:41,416 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2023-12-25 19:39:41,417 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10
[2023-12-25 19:39:41,417 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1115989790]
[2023-12-25 19:39:41,418 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 19:39:41,420 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-12-25 19:39:41,420 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 19:39:41,423 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-12-25 19:39:41,423 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90
[2023-12-25 19:39:41,423 INFO  L87              Difference]: Start difference. First operand 9407 states and 15649 transitions. Second operand  has 5 states, 5 states have (on average 1128.2) internal successors, (5641), 5 states have internal predecessors, (5641), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 19:39:48,124 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 19:39:48,124 INFO  L93              Difference]: Finished difference Result 34035 states and 56388 transitions.
[2023-12-25 19:39:48,124 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2023-12-25 19:39:48,126 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 1128.2) internal successors, (5641), 5 states have internal predecessors, (5641), 0 states have call successors, (0), 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 6084
[2023-12-25 19:39:48,130 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 19:39:48,148 INFO  L225             Difference]: With dead ends: 34035
[2023-12-25 19:39:48,148 INFO  L226             Difference]: Without dead ends: 17657
[2023-12-25 19:39:48,164 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 12167 GetRequests, 12158 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110
[2023-12-25 19:39:48,164 INFO  L413           NwaCegarLoop]: 23767 mSDtfsCounter, 37149 mSDsluCounter, 23099 mSDsCounter, 0 mSdLazyCounter, 9554 mSolverCounterSat, 648 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37149 SdHoareTripleChecker+Valid, 46866 SdHoareTripleChecker+Invalid, 10202 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 648 IncrementalHoareTripleChecker+Valid, 9554 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.3s IncrementalHoareTripleChecker+Time
[2023-12-25 19:39:48,164 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [37149 Valid, 46866 Invalid, 10202 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [648 Valid, 9554 Invalid, 0 Unknown, 0 Unchecked, 6.3s Time]
[2023-12-25 19:39:48,181 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 17657 states.
[2023-12-25 19:39:48,285 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 17657 to 9412.
[2023-12-25 19:39:48,294 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 9412 states, 9411 states have (on average 1.6635851662947614) internal successors, (15656), 9411 states have internal predecessors, (15656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 19:39:48,304 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 9412 states to 9412 states and 15656 transitions.
[2023-12-25 19:39:48,304 INFO  L78                 Accepts]: Start accepts. Automaton has 9412 states and 15656 transitions. Word has length 6084
[2023-12-25 19:39:48,307 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 19:39:48,307 INFO  L495      AbstractCegarLoop]: Abstraction has 9412 states and 15656 transitions.
[2023-12-25 19:39:48,308 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 1128.2) internal successors, (5641), 5 states have internal predecessors, (5641), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 19:39:48,309 INFO  L276                IsEmpty]: Start isEmpty. Operand 9412 states and 15656 transitions.
[2023-12-25 19:39:48,572 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 6086
[2023-12-25 19:39:48,572 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 19:39:48,573 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-12-25 19:39:48,654 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Forceful destruction successful, exit code 0
[2023-12-25 19:39:48,784 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,SelfDestructingSolverStorable47
[2023-12-25 19:39:48,785 INFO  L420      AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 19:39:48,786 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 19:39:48,786 INFO  L85        PathProgramCache]: Analyzing trace with hash 1853743644, now seen corresponding path program 1 times
[2023-12-25 19:39:48,786 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 19:39:48,786 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2062540239]
[2023-12-25 19:39:48,787 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 19:39:48,787 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 19:39:49,150 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 19:39:49,150 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1013675750]
[2023-12-25 19:39:49,152 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 19:39:49,152 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 19:39:49,152 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 19:39:49,153 INFO  L229       MonitoredProcess]: Starting monitored process 47 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-25 19:39:49,154 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Waiting until timeout for monitored process
[2023-12-25 19:39:55,124 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 19:39:55,290 INFO  L262         TraceCheckSpWp]: Trace formula consists of 26767 conjuncts, 17 conjunts are in the unsatisfiable core
[2023-12-25 19:39:55,351 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 19:39:55,837 INFO  L134       CoverageAnalysis]: Checked inductivity of 546 backedges. 102 proven. 444 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-25 19:39:55,837 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-12-25 19:39:56,025 INFO  L134       CoverageAnalysis]: Checked inductivity of 546 backedges. 106 proven. 0 refuted. 0 times theorem prover too weak. 440 trivial. 0 not checked.
[2023-12-25 19:39:56,025 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 19:39:56,025 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2062540239]
[2023-12-25 19:39:56,025 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 19:39:56,025 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1013675750]
[2023-12-25 19:39:56,025 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1013675750] provided 1 perfect and 1 imperfect interpolant sequences
[2023-12-25 19:39:56,025 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2023-12-25 19:39:56,026 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10
[2023-12-25 19:39:56,026 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [63288170]
[2023-12-25 19:39:56,026 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 19:39:56,030 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-12-25 19:39:56,030 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 19:39:56,032 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-12-25 19:39:56,032 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90
[2023-12-25 19:39:56,033 INFO  L87              Difference]: Start difference. First operand 9412 states and 15656 transitions. Second operand  has 5 states, 5 states have (on average 1129.2) internal successors, (5646), 5 states have internal predecessors, (5646), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 19:40:02,431 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 19:40:02,432 INFO  L93              Difference]: Finished difference Result 34059 states and 56422 transitions.
[2023-12-25 19:40:02,432 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2023-12-25 19:40:02,433 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 1129.2) internal successors, (5646), 5 states have internal predecessors, (5646), 0 states have call successors, (0), 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 6085
[2023-12-25 19:40:02,437 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 19:40:02,453 INFO  L225             Difference]: With dead ends: 34059
[2023-12-25 19:40:02,453 INFO  L226             Difference]: Without dead ends: 17661
[2023-12-25 19:40:02,466 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 12169 GetRequests, 12160 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110
[2023-12-25 19:40:02,480 INFO  L413           NwaCegarLoop]: 23754 mSDtfsCounter, 37171 mSDsluCounter, 23092 mSDsCounter, 0 mSdLazyCounter, 9550 mSolverCounterSat, 648 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37171 SdHoareTripleChecker+Valid, 46846 SdHoareTripleChecker+Invalid, 10198 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 648 IncrementalHoareTripleChecker+Valid, 9550 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.9s IncrementalHoareTripleChecker+Time
[2023-12-25 19:40:02,480 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [37171 Valid, 46846 Invalid, 10198 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [648 Valid, 9550 Invalid, 0 Unknown, 0 Unchecked, 5.9s Time]
[2023-12-25 19:40:02,495 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 17661 states.
[2023-12-25 19:40:02,583 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 17661 to 9417.
[2023-12-25 19:40:02,591 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 9417 states, 9416 states have (on average 1.663445199660153) internal successors, (15663), 9416 states have internal predecessors, (15663), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 19:40:02,600 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 9417 states to 9417 states and 15663 transitions.
[2023-12-25 19:40:02,600 INFO  L78                 Accepts]: Start accepts. Automaton has 9417 states and 15663 transitions. Word has length 6085
[2023-12-25 19:40:02,603 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 19:40:02,603 INFO  L495      AbstractCegarLoop]: Abstraction has 9417 states and 15663 transitions.
[2023-12-25 19:40:02,604 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 1129.2) internal successors, (5646), 5 states have internal predecessors, (5646), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 19:40:02,604 INFO  L276                IsEmpty]: Start isEmpty. Operand 9417 states and 15663 transitions.
[2023-12-25 19:40:02,779 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 6087
[2023-12-25 19:40:02,780 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 19:40:02,781 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-12-25 19:40:02,859 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Forceful destruction successful, exit code 0
[2023-12-25 19:40:02,985 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48,47 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 19:40:02,985 INFO  L420      AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 19:40:02,985 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 19:40:02,986 INFO  L85        PathProgramCache]: Analyzing trace with hash -1059826760, now seen corresponding path program 1 times
[2023-12-25 19:40:02,986 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 19:40:02,986 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1106350374]
[2023-12-25 19:40:02,986 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 19:40:02,986 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 19:40:03,323 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 19:40:03,323 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1407573529]
[2023-12-25 19:40:03,324 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 19:40:03,324 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 19:40:03,325 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 19:40:03,325 INFO  L229       MonitoredProcess]: Starting monitored process 48 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-25 19:40:03,326 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Waiting until timeout for monitored process
[2023-12-25 19:40:09,424 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 19:40:09,594 INFO  L262         TraceCheckSpWp]: Trace formula consists of 26770 conjuncts, 17 conjunts are in the unsatisfiable core
[2023-12-25 19:40:09,651 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 19:40:10,398 INFO  L134       CoverageAnalysis]: Checked inductivity of 546 backedges. 106 proven. 440 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-25 19:40:10,399 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-12-25 19:40:10,551 INFO  L134       CoverageAnalysis]: Checked inductivity of 546 backedges. 110 proven. 0 refuted. 0 times theorem prover too weak. 436 trivial. 0 not checked.
[2023-12-25 19:40:10,551 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 19:40:10,551 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1106350374]
[2023-12-25 19:40:10,551 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 19:40:10,551 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1407573529]
[2023-12-25 19:40:10,552 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1407573529] provided 1 perfect and 1 imperfect interpolant sequences
[2023-12-25 19:40:10,552 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2023-12-25 19:40:10,552 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10
[2023-12-25 19:40:10,553 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1362603881]
[2023-12-25 19:40:10,553 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 19:40:10,555 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-12-25 19:40:10,555 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 19:40:10,557 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-12-25 19:40:10,557 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90
[2023-12-25 19:40:10,558 INFO  L87              Difference]: Start difference. First operand 9417 states and 15663 transitions. Second operand  has 5 states, 5 states have (on average 1130.2) internal successors, (5651), 5 states have internal predecessors, (5651), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 19:40:16,799 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 19:40:16,799 INFO  L93              Difference]: Finished difference Result 34083 states and 56456 transitions.
[2023-12-25 19:40:16,799 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2023-12-25 19:40:16,800 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 1130.2) internal successors, (5651), 5 states have internal predecessors, (5651), 0 states have call successors, (0), 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 6086
[2023-12-25 19:40:16,804 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 19:40:16,820 INFO  L225             Difference]: With dead ends: 34083
[2023-12-25 19:40:16,821 INFO  L226             Difference]: Without dead ends: 17665
[2023-12-25 19:40:16,834 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 12171 GetRequests, 12162 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110
[2023-12-25 19:40:16,834 INFO  L413           NwaCegarLoop]: 23741 mSDtfsCounter, 25443 mSDsluCounter, 34183 mSDsCounter, 0 mSdLazyCounter, 12142 mSolverCounterSat, 648 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25443 SdHoareTripleChecker+Valid, 57924 SdHoareTripleChecker+Invalid, 12790 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 648 IncrementalHoareTripleChecker+Valid, 12142 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.9s IncrementalHoareTripleChecker+Time
[2023-12-25 19:40:16,834 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [25443 Valid, 57924 Invalid, 12790 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [648 Valid, 12142 Invalid, 0 Unknown, 0 Unchecked, 5.9s Time]
[2023-12-25 19:40:16,847 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 17665 states.
[2023-12-25 19:40:16,930 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 17665 to 9422.
[2023-12-25 19:40:16,938 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 9422 states, 9421 states have (on average 1.6633053815943106) internal successors, (15670), 9421 states have internal predecessors, (15670), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 19:40:16,947 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 9422 states to 9422 states and 15670 transitions.
[2023-12-25 19:40:16,947 INFO  L78                 Accepts]: Start accepts. Automaton has 9422 states and 15670 transitions. Word has length 6086
[2023-12-25 19:40:16,950 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 19:40:16,950 INFO  L495      AbstractCegarLoop]: Abstraction has 9422 states and 15670 transitions.
[2023-12-25 19:40:16,951 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 1130.2) internal successors, (5651), 5 states have internal predecessors, (5651), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 19:40:16,951 INFO  L276                IsEmpty]: Start isEmpty. Operand 9422 states and 15670 transitions.
[2023-12-25 19:40:17,166 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 6088
[2023-12-25 19:40:17,166 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 19:40:17,167 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-12-25 19:40:17,241 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Forceful destruction successful, exit code 0
[2023-12-25 19:40:17,380 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 48 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable49
[2023-12-25 19:40:17,381 INFO  L420      AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 19:40:17,381 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 19:40:17,382 INFO  L85        PathProgramCache]: Analyzing trace with hash 662080594, now seen corresponding path program 1 times
[2023-12-25 19:40:17,382 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 19:40:17,382 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [826031879]
[2023-12-25 19:40:17,383 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 19:40:17,383 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 19:40:17,728 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 19:40:17,728 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [639523538]
[2023-12-25 19:40:17,729 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 19:40:17,729 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 19:40:17,729 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 19:40:17,730 INFO  L229       MonitoredProcess]: Starting monitored process 49 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-25 19:40:17,732 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Waiting until timeout for monitored process
[2023-12-25 19:40:23,693 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 19:40:23,861 INFO  L262         TraceCheckSpWp]: Trace formula consists of 26774 conjuncts, 17 conjunts are in the unsatisfiable core
[2023-12-25 19:40:23,922 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 19:40:24,471 INFO  L134       CoverageAnalysis]: Checked inductivity of 546 backedges. 110 proven. 436 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-25 19:40:24,471 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-12-25 19:40:24,679 INFO  L134       CoverageAnalysis]: Checked inductivity of 546 backedges. 114 proven. 0 refuted. 0 times theorem prover too weak. 432 trivial. 0 not checked.
[2023-12-25 19:40:24,679 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 19:40:24,679 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [826031879]
[2023-12-25 19:40:24,680 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 19:40:24,680 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [639523538]
[2023-12-25 19:40:24,680 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [639523538] provided 1 perfect and 1 imperfect interpolant sequences
[2023-12-25 19:40:24,680 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2023-12-25 19:40:24,681 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10
[2023-12-25 19:40:24,681 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1142884569]
[2023-12-25 19:40:24,681 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 19:40:24,683 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-12-25 19:40:24,683 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 19:40:24,685 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-12-25 19:40:24,685 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90
[2023-12-25 19:40:24,686 INFO  L87              Difference]: Start difference. First operand 9422 states and 15670 transitions. Second operand  has 5 states, 5 states have (on average 1131.2) internal successors, (5656), 5 states have internal predecessors, (5656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 19:40:30,288 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 19:40:30,288 INFO  L93              Difference]: Finished difference Result 34107 states and 56490 transitions.
[2023-12-25 19:40:30,288 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2023-12-25 19:40:30,289 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 1131.2) internal successors, (5656), 5 states have internal predecessors, (5656), 0 states have call successors, (0), 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 6087
[2023-12-25 19:40:30,293 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 19:40:30,310 INFO  L225             Difference]: With dead ends: 34107
[2023-12-25 19:40:30,310 INFO  L226             Difference]: Without dead ends: 17669
[2023-12-25 19:40:30,323 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 12173 GetRequests, 12164 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110
[2023-12-25 19:40:30,323 INFO  L413           NwaCegarLoop]: 23728 mSDtfsCounter, 37110 mSDsluCounter, 23081 mSDsCounter, 0 mSdLazyCounter, 9542 mSolverCounterSat, 648 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37110 SdHoareTripleChecker+Valid, 46809 SdHoareTripleChecker+Invalid, 10190 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 648 IncrementalHoareTripleChecker+Valid, 9542 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.2s IncrementalHoareTripleChecker+Time
[2023-12-25 19:40:30,324 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [37110 Valid, 46809 Invalid, 10190 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [648 Valid, 9542 Invalid, 0 Unknown, 0 Unchecked, 5.2s Time]
[2023-12-25 19:40:30,339 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 17669 states.
[2023-12-25 19:40:30,432 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 17669 to 9427.
[2023-12-25 19:40:30,440 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 9427 states, 9426 states have (on average 1.6631657118608105) internal successors, (15677), 9426 states have internal predecessors, (15677), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 19:40:30,450 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 9427 states to 9427 states and 15677 transitions.
[2023-12-25 19:40:30,451 INFO  L78                 Accepts]: Start accepts. Automaton has 9427 states and 15677 transitions. Word has length 6087
[2023-12-25 19:40:30,453 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 19:40:30,453 INFO  L495      AbstractCegarLoop]: Abstraction has 9427 states and 15677 transitions.
[2023-12-25 19:40:30,454 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 1131.2) internal successors, (5656), 5 states have internal predecessors, (5656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 19:40:30,454 INFO  L276                IsEmpty]: Start isEmpty. Operand 9427 states and 15677 transitions.
[2023-12-25 19:40:30,633 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 6089
[2023-12-25 19:40:30,633 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 19:40:30,634 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-12-25 19:40:30,716 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Forceful destruction successful, exit code 0
[2023-12-25 19:40:30,848 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50,49 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 19:40:30,848 INFO  L420      AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 19:40:30,849 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 19:40:30,849 INFO  L85        PathProgramCache]: Analyzing trace with hash 1595037318, now seen corresponding path program 1 times
[2023-12-25 19:40:30,849 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 19:40:30,849 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1332839613]
[2023-12-25 19:40:30,850 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 19:40:30,850 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 19:40:31,326 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 19:40:31,326 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [706995091]
[2023-12-25 19:40:31,328 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 19:40:31,328 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 19:40:31,328 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 19:40:31,329 INFO  L229       MonitoredProcess]: Starting monitored process 50 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-25 19:40:31,330 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Waiting until timeout for monitored process
[2023-12-25 19:40:37,362 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 19:40:37,555 INFO  L262         TraceCheckSpWp]: Trace formula consists of 26777 conjuncts, 17 conjunts are in the unsatisfiable core
[2023-12-25 19:40:37,616 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 19:40:38,005 INFO  L134       CoverageAnalysis]: Checked inductivity of 546 backedges. 114 proven. 432 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-25 19:40:38,005 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-12-25 19:40:38,192 INFO  L134       CoverageAnalysis]: Checked inductivity of 546 backedges. 118 proven. 0 refuted. 0 times theorem prover too weak. 428 trivial. 0 not checked.
[2023-12-25 19:40:38,192 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 19:40:38,192 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1332839613]
[2023-12-25 19:40:38,193 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 19:40:38,193 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [706995091]
[2023-12-25 19:40:38,193 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [706995091] provided 1 perfect and 1 imperfect interpolant sequences
[2023-12-25 19:40:38,193 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2023-12-25 19:40:38,194 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10
[2023-12-25 19:40:38,194 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [717605707]
[2023-12-25 19:40:38,194 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 19:40:38,196 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-12-25 19:40:38,196 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 19:40:38,198 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-12-25 19:40:38,199 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90
[2023-12-25 19:40:38,199 INFO  L87              Difference]: Start difference. First operand 9427 states and 15677 transitions. Second operand  has 5 states, 5 states have (on average 1132.2) internal successors, (5661), 5 states have internal predecessors, (5661), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 19:40:44,006 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 19:40:44,006 INFO  L93              Difference]: Finished difference Result 34131 states and 56524 transitions.
[2023-12-25 19:40:44,007 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2023-12-25 19:40:44,008 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 1132.2) internal successors, (5661), 5 states have internal predecessors, (5661), 0 states have call successors, (0), 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 6088
[2023-12-25 19:40:44,011 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 19:40:44,026 INFO  L225             Difference]: With dead ends: 34131
[2023-12-25 19:40:44,026 INFO  L226             Difference]: Without dead ends: 17673
[2023-12-25 19:40:44,036 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 12175 GetRequests, 12166 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110
[2023-12-25 19:40:44,036 INFO  L413           NwaCegarLoop]: 23715 mSDtfsCounter, 37097 mSDsluCounter, 23075 mSDsCounter, 0 mSdLazyCounter, 9538 mSolverCounterSat, 648 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37097 SdHoareTripleChecker+Valid, 46790 SdHoareTripleChecker+Invalid, 10186 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 648 IncrementalHoareTripleChecker+Valid, 9538 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.3s IncrementalHoareTripleChecker+Time
[2023-12-25 19:40:44,036 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [37097 Valid, 46790 Invalid, 10186 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [648 Valid, 9538 Invalid, 0 Unknown, 0 Unchecked, 5.3s Time]
[2023-12-25 19:40:44,047 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 17673 states.
[2023-12-25 19:40:44,125 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 17673 to 9432.
[2023-12-25 19:40:44,133 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 9432 states, 9431 states have (on average 1.6630261902237302) internal successors, (15684), 9431 states have internal predecessors, (15684), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 19:40:44,141 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 9432 states to 9432 states and 15684 transitions.
[2023-12-25 19:40:44,142 INFO  L78                 Accepts]: Start accepts. Automaton has 9432 states and 15684 transitions. Word has length 6088
[2023-12-25 19:40:44,144 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 19:40:44,144 INFO  L495      AbstractCegarLoop]: Abstraction has 9432 states and 15684 transitions.
[2023-12-25 19:40:44,145 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 1132.2) internal successors, (5661), 5 states have internal predecessors, (5661), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 19:40:44,145 INFO  L276                IsEmpty]: Start isEmpty. Operand 9432 states and 15684 transitions.
[2023-12-25 19:40:44,323 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 6090
[2023-12-25 19:40:44,323 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 19:40:44,324 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-12-25 19:40:44,401 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Forceful destruction successful, exit code 0
[2023-12-25 19:40:44,542 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,SelfDestructingSolverStorable51
[2023-12-25 19:40:44,543 INFO  L420      AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 19:40:44,544 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 19:40:44,544 INFO  L85        PathProgramCache]: Analyzing trace with hash -1584013816, now seen corresponding path program 1 times
[2023-12-25 19:40:44,544 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 19:40:44,544 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1395875239]
[2023-12-25 19:40:44,545 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 19:40:44,545 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 19:40:44,895 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 19:40:44,895 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [574532176]
[2023-12-25 19:40:44,896 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 19:40:44,896 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 19:40:44,896 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 19:40:44,897 INFO  L229       MonitoredProcess]: Starting monitored process 51 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-25 19:40:44,911 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Waiting until timeout for monitored process
[2023-12-25 19:40:51,000 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 19:40:51,192 INFO  L262         TraceCheckSpWp]: Trace formula consists of 26781 conjuncts, 17 conjunts are in the unsatisfiable core
[2023-12-25 19:40:51,254 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 19:40:51,651 INFO  L134       CoverageAnalysis]: Checked inductivity of 546 backedges. 118 proven. 428 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-25 19:40:51,652 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-12-25 19:40:51,815 INFO  L134       CoverageAnalysis]: Checked inductivity of 546 backedges. 122 proven. 0 refuted. 0 times theorem prover too weak. 424 trivial. 0 not checked.
[2023-12-25 19:40:51,815 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 19:40:51,815 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1395875239]
[2023-12-25 19:40:51,815 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 19:40:51,816 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [574532176]
[2023-12-25 19:40:51,816 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [574532176] provided 1 perfect and 1 imperfect interpolant sequences
[2023-12-25 19:40:51,816 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2023-12-25 19:40:51,817 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10
[2023-12-25 19:40:51,817 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [712683165]
[2023-12-25 19:40:51,817 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 19:40:51,820 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-12-25 19:40:51,820 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 19:40:51,823 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-12-25 19:40:51,823 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90
[2023-12-25 19:40:51,824 INFO  L87              Difference]: Start difference. First operand 9432 states and 15684 transitions. Second operand  has 5 states, 5 states have (on average 1133.2) internal successors, (5666), 5 states have internal predecessors, (5666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 19:40:58,405 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 19:40:58,405 INFO  L93              Difference]: Finished difference Result 34155 states and 56558 transitions.
[2023-12-25 19:40:58,405 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2023-12-25 19:40:58,406 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 1133.2) internal successors, (5666), 5 states have internal predecessors, (5666), 0 states have call successors, (0), 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 6089
[2023-12-25 19:40:58,410 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 19:40:58,424 INFO  L225             Difference]: With dead ends: 34155
[2023-12-25 19:40:58,424 INFO  L226             Difference]: Without dead ends: 17677
[2023-12-25 19:40:58,435 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 12177 GetRequests, 12168 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110
[2023-12-25 19:40:58,435 INFO  L413           NwaCegarLoop]: 23702 mSDtfsCounter, 37123 mSDsluCounter, 23068 mSDsCounter, 0 mSdLazyCounter, 9534 mSolverCounterSat, 648 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37123 SdHoareTripleChecker+Valid, 46770 SdHoareTripleChecker+Invalid, 10182 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 648 IncrementalHoareTripleChecker+Valid, 9534 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.1s IncrementalHoareTripleChecker+Time
[2023-12-25 19:40:58,435 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [37123 Valid, 46770 Invalid, 10182 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [648 Valid, 9534 Invalid, 0 Unknown, 0 Unchecked, 6.1s Time]
[2023-12-25 19:40:58,447 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 17677 states.
[2023-12-25 19:40:58,527 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 17677 to 9437.
[2023-12-25 19:40:58,535 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 9437 states, 9436 states have (on average 1.6628868164476474) internal successors, (15691), 9436 states have internal predecessors, (15691), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 19:40:58,544 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 9437 states to 9437 states and 15691 transitions.
[2023-12-25 19:40:58,544 INFO  L78                 Accepts]: Start accepts. Automaton has 9437 states and 15691 transitions. Word has length 6089
[2023-12-25 19:40:58,546 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 19:40:58,546 INFO  L495      AbstractCegarLoop]: Abstraction has 9437 states and 15691 transitions.
[2023-12-25 19:40:58,547 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 1133.2) internal successors, (5666), 5 states have internal predecessors, (5666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 19:40:58,547 INFO  L276                IsEmpty]: Start isEmpty. Operand 9437 states and 15691 transitions.
[2023-12-25 19:40:58,725 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 6091
[2023-12-25 19:40:58,726 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 19:40:58,727 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-12-25 19:40:58,809 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Forceful destruction successful, exit code 0
[2023-12-25 19:40:58,952 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,SelfDestructingSolverStorable52
[2023-12-25 19:40:58,952 INFO  L420      AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 19:40:58,953 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 19:40:58,953 INFO  L85        PathProgramCache]: Analyzing trace with hash 397843668, now seen corresponding path program 1 times
[2023-12-25 19:40:58,953 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 19:40:58,953 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2072940550]
[2023-12-25 19:40:58,954 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 19:40:58,954 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 19:40:59,304 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 19:40:59,305 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2089664711]
[2023-12-25 19:40:59,306 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 19:40:59,306 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 19:40:59,306 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 19:40:59,307 INFO  L229       MonitoredProcess]: Starting monitored process 52 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-25 19:40:59,309 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Waiting until timeout for monitored process
[2023-12-25 19:41:05,308 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 19:41:05,497 INFO  L262         TraceCheckSpWp]: Trace formula consists of 26784 conjuncts, 17 conjunts are in the unsatisfiable core
[2023-12-25 19:41:05,743 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 19:41:06,161 INFO  L134       CoverageAnalysis]: Checked inductivity of 546 backedges. 122 proven. 424 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-25 19:41:06,161 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-12-25 19:41:06,343 INFO  L134       CoverageAnalysis]: Checked inductivity of 546 backedges. 126 proven. 0 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked.
[2023-12-25 19:41:06,343 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 19:41:06,344 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2072940550]
[2023-12-25 19:41:06,344 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 19:41:06,344 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2089664711]
[2023-12-25 19:41:06,344 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [2089664711] provided 1 perfect and 1 imperfect interpolant sequences
[2023-12-25 19:41:06,344 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2023-12-25 19:41:06,345 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10
[2023-12-25 19:41:06,345 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [459424848]
[2023-12-25 19:41:06,345 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 19:41:06,347 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-12-25 19:41:06,347 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 19:41:06,349 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-12-25 19:41:06,350 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90
[2023-12-25 19:41:06,350 INFO  L87              Difference]: Start difference. First operand 9437 states and 15691 transitions. Second operand  has 5 states, 5 states have (on average 1134.2) internal successors, (5671), 5 states have internal predecessors, (5671), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 19:41:11,737 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 19:41:11,737 INFO  L93              Difference]: Finished difference Result 34179 states and 56592 transitions.
[2023-12-25 19:41:11,737 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2023-12-25 19:41:11,738 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 1134.2) internal successors, (5671), 5 states have internal predecessors, (5671), 0 states have call successors, (0), 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 6090
[2023-12-25 19:41:11,742 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 19:41:11,756 INFO  L225             Difference]: With dead ends: 34179
[2023-12-25 19:41:11,756 INFO  L226             Difference]: Without dead ends: 17681
[2023-12-25 19:41:11,764 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 12179 GetRequests, 12170 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110
[2023-12-25 19:41:11,765 INFO  L413           NwaCegarLoop]: 23689 mSDtfsCounter, 37111 mSDsluCounter, 23062 mSDsCounter, 0 mSdLazyCounter, 9530 mSolverCounterSat, 648 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37111 SdHoareTripleChecker+Valid, 46751 SdHoareTripleChecker+Invalid, 10178 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 648 IncrementalHoareTripleChecker+Valid, 9530 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time
[2023-12-25 19:41:11,765 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [37111 Valid, 46751 Invalid, 10178 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [648 Valid, 9530 Invalid, 0 Unknown, 0 Unchecked, 4.9s Time]
[2023-12-25 19:41:11,777 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 17681 states.
[2023-12-25 19:41:11,862 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 17681 to 9442.
[2023-12-25 19:41:11,871 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 9442 states, 9441 states have (on average 1.6627475902976379) internal successors, (15698), 9441 states have internal predecessors, (15698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 19:41:11,880 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 9442 states to 9442 states and 15698 transitions.
[2023-12-25 19:41:11,881 INFO  L78                 Accepts]: Start accepts. Automaton has 9442 states and 15698 transitions. Word has length 6090
[2023-12-25 19:41:11,883 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 19:41:11,883 INFO  L495      AbstractCegarLoop]: Abstraction has 9442 states and 15698 transitions.
[2023-12-25 19:41:11,884 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 1134.2) internal successors, (5671), 5 states have internal predecessors, (5671), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 19:41:11,884 INFO  L276                IsEmpty]: Start isEmpty. Operand 9442 states and 15698 transitions.
[2023-12-25 19:41:12,062 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 6092
[2023-12-25 19:41:12,063 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 19:41:12,064 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-12-25 19:41:12,141 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Ended with exit code 0
[2023-12-25 19:41:12,284 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53,52 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 19:41:12,284 INFO  L420      AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 19:41:12,285 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 19:41:12,285 INFO  L85        PathProgramCache]: Analyzing trace with hash -1866483906, now seen corresponding path program 1 times
[2023-12-25 19:41:12,285 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 19:41:12,285 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1506182855]
[2023-12-25 19:41:12,286 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 19:41:12,286 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 19:41:12,631 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 19:41:12,631 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [367459313]
[2023-12-25 19:41:12,632 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 19:41:12,632 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 19:41:12,632 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 19:41:12,633 INFO  L229       MonitoredProcess]: Starting monitored process 53 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-25 19:41:12,636 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Waiting until timeout for monitored process
[2023-12-25 19:41:18,625 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 19:41:18,813 INFO  L262         TraceCheckSpWp]: Trace formula consists of 26788 conjuncts, 17 conjunts are in the unsatisfiable core
[2023-12-25 19:41:18,878 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 19:41:19,280 INFO  L134       CoverageAnalysis]: Checked inductivity of 546 backedges. 126 proven. 420 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-25 19:41:19,281 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-12-25 19:41:19,452 INFO  L134       CoverageAnalysis]: Checked inductivity of 546 backedges. 130 proven. 0 refuted. 0 times theorem prover too weak. 416 trivial. 0 not checked.
[2023-12-25 19:41:19,453 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 19:41:19,453 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1506182855]
[2023-12-25 19:41:19,453 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 19:41:19,453 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [367459313]
[2023-12-25 19:41:19,453 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [367459313] provided 1 perfect and 1 imperfect interpolant sequences
[2023-12-25 19:41:19,453 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2023-12-25 19:41:19,454 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10
[2023-12-25 19:41:19,454 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1714114976]
[2023-12-25 19:41:19,454 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 19:41:19,457 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-12-25 19:41:19,457 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 19:41:19,459 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-12-25 19:41:19,459 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90
[2023-12-25 19:41:19,459 INFO  L87              Difference]: Start difference. First operand 9442 states and 15698 transitions. Second operand  has 5 states, 5 states have (on average 1135.2) internal successors, (5676), 5 states have internal predecessors, (5676), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 19:41:25,681 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 19:41:25,681 INFO  L93              Difference]: Finished difference Result 34203 states and 56626 transitions.
[2023-12-25 19:41:25,681 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2023-12-25 19:41:25,683 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 1135.2) internal successors, (5676), 5 states have internal predecessors, (5676), 0 states have call successors, (0), 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 6091
[2023-12-25 19:41:25,686 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 19:41:25,697 INFO  L225             Difference]: With dead ends: 34203
[2023-12-25 19:41:25,698 INFO  L226             Difference]: Without dead ends: 17685
[2023-12-25 19:41:25,704 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 12181 GetRequests, 12172 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110
[2023-12-25 19:41:25,704 INFO  L413           NwaCegarLoop]: 23676 mSDtfsCounter, 25408 mSDsluCounter, 34138 mSDsCounter, 0 mSdLazyCounter, 12122 mSolverCounterSat, 648 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25408 SdHoareTripleChecker+Valid, 57814 SdHoareTripleChecker+Invalid, 12770 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 648 IncrementalHoareTripleChecker+Valid, 12122 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.8s IncrementalHoareTripleChecker+Time
[2023-12-25 19:41:25,704 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [25408 Valid, 57814 Invalid, 12770 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [648 Valid, 12122 Invalid, 0 Unknown, 0 Unchecked, 5.8s Time]
[2023-12-25 19:41:25,714 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 17685 states.
[2023-12-25 19:41:25,785 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 17685 to 9447.
[2023-12-25 19:41:25,793 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 9447 states, 9446 states have (on average 1.662608511539276) internal successors, (15705), 9446 states have internal predecessors, (15705), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 19:41:25,802 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 9447 states to 9447 states and 15705 transitions.
[2023-12-25 19:41:25,802 INFO  L78                 Accepts]: Start accepts. Automaton has 9447 states and 15705 transitions. Word has length 6091
[2023-12-25 19:41:25,805 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 19:41:25,805 INFO  L495      AbstractCegarLoop]: Abstraction has 9447 states and 15705 transitions.
[2023-12-25 19:41:25,806 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 1135.2) internal successors, (5676), 5 states have internal predecessors, (5676), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 19:41:25,806 INFO  L276                IsEmpty]: Start isEmpty. Operand 9447 states and 15705 transitions.
[2023-12-25 19:41:25,986 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 6093
[2023-12-25 19:41:25,987 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 19:41:25,988 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-12-25 19:41:26,072 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Forceful destruction successful, exit code 0
[2023-12-25 19:41:26,216 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,SelfDestructingSolverStorable54
[2023-12-25 19:41:26,216 INFO  L420      AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 19:41:26,217 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 19:41:26,217 INFO  L85        PathProgramCache]: Analyzing trace with hash 903579298, now seen corresponding path program 1 times
[2023-12-25 19:41:26,217 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 19:41:26,217 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [712040873]
[2023-12-25 19:41:26,218 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 19:41:26,218 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 19:41:26,587 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 19:41:26,588 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [472293228]
[2023-12-25 19:41:26,589 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 19:41:26,589 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 19:41:26,589 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 19:41:26,590 INFO  L229       MonitoredProcess]: Starting monitored process 54 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-25 19:41:26,592 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Waiting until timeout for monitored process
[2023-12-25 19:41:32,608 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 19:41:32,776 INFO  L262         TraceCheckSpWp]: Trace formula consists of 26791 conjuncts, 17 conjunts are in the unsatisfiable core
[2023-12-25 19:41:32,836 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 19:41:33,664 INFO  L134       CoverageAnalysis]: Checked inductivity of 546 backedges. 130 proven. 416 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-25 19:41:33,664 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-12-25 19:41:33,887 INFO  L134       CoverageAnalysis]: Checked inductivity of 546 backedges. 132 proven. 0 refuted. 0 times theorem prover too weak. 414 trivial. 0 not checked.
[2023-12-25 19:41:33,887 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 19:41:33,888 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [712040873]
[2023-12-25 19:41:33,888 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 19:41:33,888 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [472293228]
[2023-12-25 19:41:33,888 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [472293228] provided 1 perfect and 1 imperfect interpolant sequences
[2023-12-25 19:41:33,888 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2023-12-25 19:41:33,889 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10
[2023-12-25 19:41:33,889 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1493513534]
[2023-12-25 19:41:33,889 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 19:41:33,892 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-12-25 19:41:33,892 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 19:41:33,894 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-12-25 19:41:33,894 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90
[2023-12-25 19:41:33,894 INFO  L87              Difference]: Start difference. First operand 9447 states and 15705 transitions. Second operand  has 5 states, 5 states have (on average 1135.8) internal successors, (5679), 5 states have internal predecessors, (5679), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 19:41:40,114 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 19:41:40,115 INFO  L93              Difference]: Finished difference Result 34224 states and 56655 transitions.
[2023-12-25 19:41:40,115 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2023-12-25 19:41:40,116 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 1135.8) internal successors, (5679), 5 states have internal predecessors, (5679), 0 states have call successors, (0), 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 6092
[2023-12-25 19:41:40,119 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 19:41:40,131 INFO  L225             Difference]: With dead ends: 34224
[2023-12-25 19:41:40,131 INFO  L226             Difference]: Without dead ends: 17686
[2023-12-25 19:41:40,139 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 12183 GetRequests, 12174 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110
[2023-12-25 19:41:40,139 INFO  L413           NwaCegarLoop]: 23668 mSDtfsCounter, 37047 mSDsluCounter, 23052 mSDsCounter, 0 mSdLazyCounter, 9526 mSolverCounterSat, 648 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37047 SdHoareTripleChecker+Valid, 46720 SdHoareTripleChecker+Invalid, 10174 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 648 IncrementalHoareTripleChecker+Valid, 9526 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.8s IncrementalHoareTripleChecker+Time
[2023-12-25 19:41:40,140 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [37047 Valid, 46720 Invalid, 10174 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [648 Valid, 9526 Invalid, 0 Unknown, 0 Unchecked, 5.8s Time]
[2023-12-25 19:41:40,151 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 17686 states.
[2023-12-25 19:41:40,223 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 17686 to 9449.
[2023-12-25 19:41:40,231 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 9449 states, 9448 states have (on average 1.662468247248095) internal successors, (15707), 9448 states have internal predecessors, (15707), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 19:41:40,241 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 9449 states to 9449 states and 15707 transitions.
[2023-12-25 19:41:40,241 INFO  L78                 Accepts]: Start accepts. Automaton has 9449 states and 15707 transitions. Word has length 6092
[2023-12-25 19:41:40,243 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 19:41:40,244 INFO  L495      AbstractCegarLoop]: Abstraction has 9449 states and 15707 transitions.
[2023-12-25 19:41:40,244 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 1135.8) internal successors, (5679), 5 states have internal predecessors, (5679), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 19:41:40,244 INFO  L276                IsEmpty]: Start isEmpty. Operand 9449 states and 15707 transitions.
[2023-12-25 19:41:40,423 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 6094
[2023-12-25 19:41:40,423 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 19:41:40,424 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-12-25 19:41:40,497 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Forceful destruction successful, exit code 0
[2023-12-25 19:41:40,638 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,SelfDestructingSolverStorable55
[2023-12-25 19:41:40,639 INFO  L420      AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 19:41:40,639 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 19:41:40,639 INFO  L85        PathProgramCache]: Analyzing trace with hash -1556414632, now seen corresponding path program 1 times
[2023-12-25 19:41:40,639 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 19:41:40,639 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [278105916]
[2023-12-25 19:41:40,640 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 19:41:40,640 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 19:41:40,990 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 19:41:40,990 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1270716757]
[2023-12-25 19:41:40,991 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 19:41:40,992 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 19:41:40,992 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 19:41:40,992 INFO  L229       MonitoredProcess]: Starting monitored process 55 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-25 19:41:40,995 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Waiting until timeout for monitored process
[2023-12-25 19:41:47,055 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 19:41:47,239 INFO  L262         TraceCheckSpWp]: Trace formula consists of 26794 conjuncts, 17 conjunts are in the unsatisfiable core
[2023-12-25 19:41:47,303 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 19:41:47,701 INFO  L134       CoverageAnalysis]: Checked inductivity of 546 backedges. 132 proven. 414 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-25 19:41:47,702 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-12-25 19:41:47,878 INFO  L134       CoverageAnalysis]: Checked inductivity of 546 backedges. 136 proven. 0 refuted. 0 times theorem prover too weak. 410 trivial. 0 not checked.
[2023-12-25 19:41:47,882 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 19:41:47,882 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [278105916]
[2023-12-25 19:41:47,883 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 19:41:47,883 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1270716757]
[2023-12-25 19:41:47,883 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1270716757] provided 1 perfect and 1 imperfect interpolant sequences
[2023-12-25 19:41:47,883 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2023-12-25 19:41:47,884 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10
[2023-12-25 19:41:47,891 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1750772819]
[2023-12-25 19:41:47,891 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 19:41:47,894 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-12-25 19:41:47,894 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 19:41:47,896 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-12-25 19:41:47,896 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90
[2023-12-25 19:41:47,896 INFO  L87              Difference]: Start difference. First operand 9449 states and 15707 transitions. Second operand  has 5 states, 5 states have (on average 1136.8) internal successors, (5684), 5 states have internal predecessors, (5684), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 19:41:53,626 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 19:41:53,626 INFO  L93              Difference]: Finished difference Result 34235 states and 56668 transitions.
[2023-12-25 19:41:53,626 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2023-12-25 19:41:53,628 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 1136.8) internal successors, (5684), 5 states have internal predecessors, (5684), 0 states have call successors, (0), 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 6093
[2023-12-25 19:41:53,632 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 19:41:53,650 INFO  L225             Difference]: With dead ends: 34235
[2023-12-25 19:41:53,650 INFO  L226             Difference]: Without dead ends: 17690
[2023-12-25 19:41:53,664 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 12185 GetRequests, 12176 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110
[2023-12-25 19:41:53,666 INFO  L413           NwaCegarLoop]: 23655 mSDtfsCounter, 37079 mSDsluCounter, 23045 mSDsCounter, 0 mSdLazyCounter, 9522 mSolverCounterSat, 648 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37079 SdHoareTripleChecker+Valid, 46700 SdHoareTripleChecker+Invalid, 10170 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 648 IncrementalHoareTripleChecker+Valid, 9522 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.3s IncrementalHoareTripleChecker+Time
[2023-12-25 19:41:53,666 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [37079 Valid, 46700 Invalid, 10170 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [648 Valid, 9522 Invalid, 0 Unknown, 0 Unchecked, 5.3s Time]
[2023-12-25 19:41:53,690 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 17690 states.
[2023-12-25 19:41:53,978 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 17690 to 9454.
[2023-12-25 19:41:53,986 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 9454 states, 9453 states have (on average 1.6623294192319897) internal successors, (15714), 9453 states have internal predecessors, (15714), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 19:41:53,995 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 9454 states to 9454 states and 15714 transitions.
[2023-12-25 19:41:53,996 INFO  L78                 Accepts]: Start accepts. Automaton has 9454 states and 15714 transitions. Word has length 6093
[2023-12-25 19:41:53,998 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 19:41:53,998 INFO  L495      AbstractCegarLoop]: Abstraction has 9454 states and 15714 transitions.
[2023-12-25 19:41:53,999 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 1136.8) internal successors, (5684), 5 states have internal predecessors, (5684), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 19:41:53,999 INFO  L276                IsEmpty]: Start isEmpty. Operand 9454 states and 15714 transitions.
[2023-12-25 19:41:54,178 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 6095
[2023-12-25 19:41:54,178 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 19:41:54,180 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-12-25 19:41:54,255 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Forceful destruction successful, exit code 0
[2023-12-25 19:41:54,396 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56,55 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 19:41:54,396 INFO  L420      AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 19:41:54,397 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 19:41:54,397 INFO  L85        PathProgramCache]: Analyzing trace with hash -902350802, now seen corresponding path program 1 times
[2023-12-25 19:41:54,397 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 19:41:54,397 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [408446489]
[2023-12-25 19:41:54,398 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 19:41:54,398 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 19:41:54,748 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 19:41:54,749 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [343141457]
[2023-12-25 19:41:54,750 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 19:41:54,750 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 19:41:54,750 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 19:41:54,751 INFO  L229       MonitoredProcess]: Starting monitored process 56 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-25 19:41:54,755 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Waiting until timeout for monitored process
[2023-12-25 19:42:00,897 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 19:42:01,077 INFO  L262         TraceCheckSpWp]: Trace formula consists of 26797 conjuncts, 17 conjunts are in the unsatisfiable core
[2023-12-25 19:42:01,136 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 19:42:01,543 INFO  L134       CoverageAnalysis]: Checked inductivity of 546 backedges. 136 proven. 410 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-25 19:42:01,543 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-12-25 19:42:01,722 INFO  L134       CoverageAnalysis]: Checked inductivity of 546 backedges. 140 proven. 0 refuted. 0 times theorem prover too weak. 406 trivial. 0 not checked.
[2023-12-25 19:42:01,723 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 19:42:01,723 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [408446489]
[2023-12-25 19:42:01,723 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 19:42:01,723 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [343141457]
[2023-12-25 19:42:01,723 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [343141457] provided 1 perfect and 1 imperfect interpolant sequences
[2023-12-25 19:42:01,723 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2023-12-25 19:42:01,724 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10
[2023-12-25 19:42:01,724 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [345024931]
[2023-12-25 19:42:01,724 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 19:42:01,727 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-12-25 19:42:01,727 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 19:42:01,729 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-12-25 19:42:01,729 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90
[2023-12-25 19:42:01,729 INFO  L87              Difference]: Start difference. First operand 9454 states and 15714 transitions. Second operand  has 5 states, 5 states have (on average 1137.8) internal successors, (5689), 5 states have internal predecessors, (5689), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 19:42:07,955 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 19:42:07,955 INFO  L93              Difference]: Finished difference Result 34262 states and 56707 transitions.
[2023-12-25 19:42:07,956 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2023-12-25 19:42:07,957 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 1137.8) internal successors, (5689), 5 states have internal predecessors, (5689), 0 states have call successors, (0), 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 6094
[2023-12-25 19:42:07,961 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 19:42:07,978 INFO  L225             Difference]: With dead ends: 34262
[2023-12-25 19:42:07,978 INFO  L226             Difference]: Without dead ends: 17694
[2023-12-25 19:42:07,992 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 12187 GetRequests, 12178 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110
[2023-12-25 19:42:07,992 INFO  L413           NwaCegarLoop]: 23642 mSDtfsCounter, 25345 mSDsluCounter, 34741 mSDsCounter, 0 mSdLazyCounter, 12978 mSolverCounterSat, 648 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25345 SdHoareTripleChecker+Valid, 58383 SdHoareTripleChecker+Invalid, 13626 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 648 IncrementalHoareTripleChecker+Valid, 12978 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.8s IncrementalHoareTripleChecker+Time
[2023-12-25 19:42:07,992 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [25345 Valid, 58383 Invalid, 13626 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [648 Valid, 12978 Invalid, 0 Unknown, 0 Unchecked, 5.8s Time]
[2023-12-25 19:42:08,006 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 17694 states.
[2023-12-25 19:42:08,093 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 17694 to 9459.
[2023-12-25 19:42:08,101 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 9459 states, 9458 states have (on average 1.662190737999577) internal successors, (15721), 9458 states have internal predecessors, (15721), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 19:42:08,110 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 9459 states to 9459 states and 15721 transitions.
[2023-12-25 19:42:08,111 INFO  L78                 Accepts]: Start accepts. Automaton has 9459 states and 15721 transitions. Word has length 6094
[2023-12-25 19:42:08,113 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 19:42:08,113 INFO  L495      AbstractCegarLoop]: Abstraction has 9459 states and 15721 transitions.
[2023-12-25 19:42:08,114 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 1137.8) internal successors, (5689), 5 states have internal predecessors, (5689), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 19:42:08,115 INFO  L276                IsEmpty]: Start isEmpty. Operand 9459 states and 15721 transitions.
[2023-12-25 19:42:08,387 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 6096
[2023-12-25 19:42:08,387 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 19:42:08,388 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-12-25 19:42:08,472 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Forceful destruction successful, exit code 0
[2023-12-25 19:42:08,590 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57,56 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 19:42:08,591 INFO  L420      AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 19:42:08,591 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 19:42:08,592 INFO  L85        PathProgramCache]: Analyzing trace with hash 608329420, now seen corresponding path program 1 times
[2023-12-25 19:42:08,592 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 19:42:08,592 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [246735143]
[2023-12-25 19:42:08,593 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 19:42:08,593 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 19:42:08,952 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 19:42:08,952 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1836903258]
[2023-12-25 19:42:08,954 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 19:42:08,954 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 19:42:08,954 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 19:42:08,956 INFO  L229       MonitoredProcess]: Starting monitored process 57 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-25 19:42:08,957 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Waiting until timeout for monitored process
[2023-12-25 19:42:14,978 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 19:42:15,160 INFO  L262         TraceCheckSpWp]: Trace formula consists of 26800 conjuncts, 17 conjunts are in the unsatisfiable core
[2023-12-25 19:42:15,222 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 19:42:15,618 INFO  L134       CoverageAnalysis]: Checked inductivity of 546 backedges. 140 proven. 406 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-25 19:42:15,618 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-12-25 19:42:15,827 INFO  L134       CoverageAnalysis]: Checked inductivity of 546 backedges. 144 proven. 0 refuted. 0 times theorem prover too weak. 402 trivial. 0 not checked.
[2023-12-25 19:42:15,827 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 19:42:15,827 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [246735143]
[2023-12-25 19:42:15,827 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 19:42:15,827 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1836903258]
[2023-12-25 19:42:15,827 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1836903258] provided 1 perfect and 1 imperfect interpolant sequences
[2023-12-25 19:42:15,827 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2023-12-25 19:42:15,828 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10
[2023-12-25 19:42:15,828 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1634408935]
[2023-12-25 19:42:15,829 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 19:42:15,831 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-12-25 19:42:15,831 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 19:42:15,833 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-12-25 19:42:15,833 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90
[2023-12-25 19:42:15,834 INFO  L87              Difference]: Start difference. First operand 9459 states and 15721 transitions. Second operand  has 5 states, 5 states have (on average 1138.8) internal successors, (5694), 5 states have internal predecessors, (5694), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 19:42:22,037 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 19:42:22,037 INFO  L93              Difference]: Finished difference Result 34286 states and 56741 transitions.
[2023-12-25 19:42:22,037 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2023-12-25 19:42:22,039 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 1138.8) internal successors, (5694), 5 states have internal predecessors, (5694), 0 states have call successors, (0), 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 6095
[2023-12-25 19:42:22,043 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 19:42:22,063 INFO  L225             Difference]: With dead ends: 34286
[2023-12-25 19:42:22,063 INFO  L226             Difference]: Without dead ends: 17698
[2023-12-25 19:42:22,077 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 12189 GetRequests, 12180 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110
[2023-12-25 19:42:22,077 INFO  L413           NwaCegarLoop]: 23629 mSDtfsCounter, 25382 mSDsluCounter, 34103 mSDsCounter, 0 mSdLazyCounter, 12110 mSolverCounterSat, 648 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25382 SdHoareTripleChecker+Valid, 57732 SdHoareTripleChecker+Invalid, 12758 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 648 IncrementalHoareTripleChecker+Valid, 12110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.8s IncrementalHoareTripleChecker+Time
[2023-12-25 19:42:22,077 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [25382 Valid, 57732 Invalid, 12758 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [648 Valid, 12110 Invalid, 0 Unknown, 0 Unchecked, 5.8s Time]
[2023-12-25 19:42:22,092 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 17698 states.
[2023-12-25 19:42:22,355 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 17698 to 9464.
[2023-12-25 19:42:22,364 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 9464 states, 9463 states have (on average 1.6620522033181866) internal successors, (15728), 9463 states have internal predecessors, (15728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 19:42:22,374 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 9464 states to 9464 states and 15728 transitions.
[2023-12-25 19:42:22,374 INFO  L78                 Accepts]: Start accepts. Automaton has 9464 states and 15728 transitions. Word has length 6095
[2023-12-25 19:42:22,377 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 19:42:22,377 INFO  L495      AbstractCegarLoop]: Abstraction has 9464 states and 15728 transitions.
[2023-12-25 19:42:22,378 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 1138.8) internal successors, (5694), 5 states have internal predecessors, (5694), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 19:42:22,378 INFO  L276                IsEmpty]: Start isEmpty. Operand 9464 states and 15728 transitions.
[2023-12-25 19:42:22,558 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 6097
[2023-12-25 19:42:22,558 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 19:42:22,559 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-12-25 19:42:22,641 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Forceful destruction successful, exit code 0
[2023-12-25 19:42:22,780 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58,57 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 19:42:22,780 INFO  L420      AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 19:42:22,781 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 19:42:22,781 INFO  L85        PathProgramCache]: Analyzing trace with hash -1764845638, now seen corresponding path program 1 times
[2023-12-25 19:42:22,781 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 19:42:22,781 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1311633623]
[2023-12-25 19:42:22,782 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 19:42:22,782 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 19:42:23,139 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 19:42:23,139 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [196410591]
[2023-12-25 19:42:23,141 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 19:42:23,141 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 19:42:23,141 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 19:42:23,142 INFO  L229       MonitoredProcess]: Starting monitored process 58 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-25 19:42:23,143 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Waiting until timeout for monitored process
[2023-12-25 19:42:29,049 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 19:42:29,224 INFO  L262         TraceCheckSpWp]: Trace formula consists of 26803 conjuncts, 17 conjunts are in the unsatisfiable core
[2023-12-25 19:42:29,286 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 19:42:29,872 INFO  L134       CoverageAnalysis]: Checked inductivity of 546 backedges. 144 proven. 402 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-25 19:42:29,872 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-12-25 19:42:30,066 INFO  L134       CoverageAnalysis]: Checked inductivity of 546 backedges. 148 proven. 0 refuted. 0 times theorem prover too weak. 398 trivial. 0 not checked.
[2023-12-25 19:42:30,066 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 19:42:30,066 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1311633623]
[2023-12-25 19:42:30,066 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 19:42:30,066 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [196410591]
[2023-12-25 19:42:30,067 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [196410591] provided 1 perfect and 1 imperfect interpolant sequences
[2023-12-25 19:42:30,067 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2023-12-25 19:42:30,068 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10
[2023-12-25 19:42:30,068 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [473551973]
[2023-12-25 19:42:30,068 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 19:42:30,070 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-12-25 19:42:30,070 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 19:42:30,072 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-12-25 19:42:30,073 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90
[2023-12-25 19:42:30,073 INFO  L87              Difference]: Start difference. First operand 9464 states and 15728 transitions. Second operand  has 5 states, 5 states have (on average 1139.8) internal successors, (5699), 5 states have internal predecessors, (5699), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 19:42:35,874 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 19:42:35,874 INFO  L93              Difference]: Finished difference Result 34310 states and 56775 transitions.
[2023-12-25 19:42:35,874 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2023-12-25 19:42:35,875 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 1139.8) internal successors, (5699), 5 states have internal predecessors, (5699), 0 states have call successors, (0), 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 6096
[2023-12-25 19:42:35,880 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 19:42:35,898 INFO  L225             Difference]: With dead ends: 34310
[2023-12-25 19:42:35,899 INFO  L226             Difference]: Without dead ends: 17702
[2023-12-25 19:42:35,913 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 12191 GetRequests, 12182 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110
[2023-12-25 19:42:35,914 INFO  L413           NwaCegarLoop]: 23616 mSDtfsCounter, 37043 mSDsluCounter, 23027 mSDsCounter, 0 mSdLazyCounter, 9510 mSolverCounterSat, 648 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37043 SdHoareTripleChecker+Valid, 46643 SdHoareTripleChecker+Invalid, 10158 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 648 IncrementalHoareTripleChecker+Valid, 9510 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.4s IncrementalHoareTripleChecker+Time
[2023-12-25 19:42:35,914 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [37043 Valid, 46643 Invalid, 10158 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [648 Valid, 9510 Invalid, 0 Unknown, 0 Unchecked, 5.4s Time]
[2023-12-25 19:42:35,928 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 17702 states.
[2023-12-25 19:42:36,143 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 17702 to 9469.
[2023-12-25 19:42:36,151 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 9469 states, 9468 states have (on average 1.66191381495564) internal successors, (15735), 9468 states have internal predecessors, (15735), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 19:42:36,160 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 9469 states to 9469 states and 15735 transitions.
[2023-12-25 19:42:36,161 INFO  L78                 Accepts]: Start accepts. Automaton has 9469 states and 15735 transitions. Word has length 6096
[2023-12-25 19:42:36,163 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 19:42:36,163 INFO  L495      AbstractCegarLoop]: Abstraction has 9469 states and 15735 transitions.
[2023-12-25 19:42:36,164 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 1139.8) internal successors, (5699), 5 states have internal predecessors, (5699), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 19:42:36,164 INFO  L276                IsEmpty]: Start isEmpty. Operand 9469 states and 15735 transitions.
[2023-12-25 19:42:36,343 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 6098
[2023-12-25 19:42:36,344 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 19:42:36,345 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-12-25 19:42:36,428 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Forceful destruction successful, exit code 0
[2023-12-25 19:42:36,560 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 58 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable59
[2023-12-25 19:42:36,561 INFO  L420      AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 19:42:36,561 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 19:42:36,561 INFO  L85        PathProgramCache]: Analyzing trace with hash -1483575232, now seen corresponding path program 1 times
[2023-12-25 19:42:36,561 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 19:42:36,561 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [481445771]
[2023-12-25 19:42:36,562 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 19:42:36,562 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 19:42:36,928 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 19:42:36,928 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [625275887]
[2023-12-25 19:42:36,929 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 19:42:36,929 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 19:42:36,930 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 19:42:36,930 INFO  L229       MonitoredProcess]: Starting monitored process 59 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-25 19:42:36,951 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Waiting until timeout for monitored process
[2023-12-25 19:42:42,912 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 19:42:43,091 INFO  L262         TraceCheckSpWp]: Trace formula consists of 26806 conjuncts, 17 conjunts are in the unsatisfiable core
[2023-12-25 19:42:43,155 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 19:42:43,819 INFO  L134       CoverageAnalysis]: Checked inductivity of 546 backedges. 148 proven. 398 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-25 19:42:43,819 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
Received shutdown request...
[2023-12-25 19:42:44,195 INFO  L805   garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining)
[2023-12-25 19:42:44,196 WARN  L340       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Timeout while monitored process is still running, waiting 1000 ms for graceful end
[2023-12-25 19:42:44,196 WARN  L340       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end
[2023-12-25 19:42:44,282 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Ended with exit code 0
[2023-12-25 19:42:44,408 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,SelfDestructingSolverStorable60
[2023-12-25 19:42:44,408 WARN  L619      AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was analyzing trace of length 6098 with TraceHistMax 2,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ∨-2-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ATOM-1 context.
[2023-12-25 19:42:44,412 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]
[2023-12-25 19:42:44,413 INFO  L179   ceAbstractionStarter]: Computing trace abstraction results
[2023-12-25 19:42:44,414 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.12 07:42:44 BoogieIcfgContainer
[2023-12-25 19:42:44,414 INFO  L131        PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2023-12-25 19:42:44,415 INFO  L158              Benchmark]: Toolchain (without parser) took 825467.08ms. Allocated memory was 191.9MB in the beginning and 5.4GB in the end (delta: 5.2GB). Free memory was 146.7MB in the beginning and 3.5GB in the end (delta: -3.3GB). Peak memory consumption was 1.9GB. Max. memory is 8.0GB.
[2023-12-25 19:42:44,415 INFO  L158              Benchmark]: CDTParser took 0.10ms. Allocated memory is still 191.9MB. Free memory was 147.9MB in the beginning and 147.7MB in the end (delta: 227.2kB). There was no memory consumed. Max. memory is 8.0GB.
[2023-12-25 19:42:44,415 INFO  L158              Benchmark]: CACSL2BoogieTranslator took 1408.09ms. Allocated memory was 191.9MB in the beginning and 275.8MB in the end (delta: 83.9MB). Free memory was 146.3MB in the beginning and 104.1MB in the end (delta: 42.1MB). Peak memory consumption was 187.7MB. Max. memory is 8.0GB.
[2023-12-25 19:42:44,415 INFO  L158              Benchmark]: Boogie Procedure Inliner took 2764.60ms. Allocated memory was 275.8MB in the beginning and 3.0GB in the end (delta: 2.7GB). Free memory was 103.6MB in the beginning and 2.4GB in the end (delta: -2.3GB). Peak memory consumption was 438.3MB. Max. memory is 8.0GB.
[2023-12-25 19:42:44,415 INFO  L158              Benchmark]: Boogie Preprocessor took 2757.62ms. Allocated memory is still 3.0GB. Free memory was 2.4GB in the beginning and 2.2GB in the end (delta: 212.9MB). Peak memory consumption was 256.9MB. Max. memory is 8.0GB.
[2023-12-25 19:42:44,415 INFO  L158              Benchmark]: RCFGBuilder took 14491.73ms. Allocated memory was 3.0GB in the beginning and 5.0GB in the end (delta: 2.1GB). Free memory was 2.2GB in the beginning and 4.2GB in the end (delta: -2.0GB). Peak memory consumption was 636.0MB. Max. memory is 8.0GB.
[2023-12-25 19:42:44,415 INFO  L158              Benchmark]: TraceAbstraction took 804038.54ms. Allocated memory was 5.0GB in the beginning and 5.4GB in the end (delta: 386.9MB). Free memory was 4.2GB in the beginning and 3.5GB in the end (delta: 669.0MB). Peak memory consumption was 1.1GB. Max. memory is 8.0GB.
[2023-12-25 19:42:44,416 INFO  L338   ainManager$Toolchain]: #######################  End [Toolchain 1] #######################
 --- Results ---
 * Results from de.uni_freiburg.informatik.ultimate.core:
  - StatisticsResult: Toolchain Benchmarks
    Benchmark results are:
 * CDTParser took 0.10ms. Allocated memory is still 191.9MB. Free memory was 147.9MB in the beginning and 147.7MB in the end (delta: 227.2kB). There was no memory consumed. Max. memory is 8.0GB.
 * CACSL2BoogieTranslator took 1408.09ms. Allocated memory was 191.9MB in the beginning and 275.8MB in the end (delta: 83.9MB). Free memory was 146.3MB in the beginning and 104.1MB in the end (delta: 42.1MB). Peak memory consumption was 187.7MB. Max. memory is 8.0GB.
 * Boogie Procedure Inliner took 2764.60ms. Allocated memory was 275.8MB in the beginning and 3.0GB in the end (delta: 2.7GB). Free memory was 103.6MB in the beginning and 2.4GB in the end (delta: -2.3GB). Peak memory consumption was 438.3MB. Max. memory is 8.0GB.
 * Boogie Preprocessor took 2757.62ms. Allocated memory is still 3.0GB. Free memory was 2.4GB in the beginning and 2.2GB in the end (delta: 212.9MB). Peak memory consumption was 256.9MB. Max. memory is 8.0GB.
 * RCFGBuilder took 14491.73ms. Allocated memory was 3.0GB in the beginning and 5.0GB in the end (delta: 2.1GB). Free memory was 2.2GB in the beginning and 4.2GB in the end (delta: -2.0GB). Peak memory consumption was 636.0MB. Max. memory is 8.0GB.
 * TraceAbstraction took 804038.54ms. Allocated memory was 5.0GB in the beginning and 5.4GB in the end (delta: 386.9MB). Free memory was 4.2GB in the beginning and 3.5GB in the end (delta: 669.0MB). Peak memory consumption was 1.1GB. 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 6098 with TraceHistMax 2,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ∨-2-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ATOM-1 context.
  - StatisticsResult: Ultimate Automizer benchmark data
    CFG has 1 procedures, 8475 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 804.0s, OverallIterations: 61, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 11.9s, AutomataDifference: 339.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1581305 SdHoareTripleChecker+Valid, 313.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1581305 mSDsluCounter, 3210531 SdHoareTripleChecker+Invalid, 260.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1912448 mSDsCounter, 29825 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 573608 IncrementalHoareTripleChecker+Invalid, 603433 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 29825 mSolverCounterUnsat, 1298083 mSDtfsCounter, 573608 mSolverCounterSat, 5.5s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 625290 GetRequests, 624827 SyntacticMatches, 0 SemanticMatches, 463 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 99 ImplicationChecksByTransitivity, 2.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=9469occurred in iteration=60, InterpolantAutomatonStates: 346, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 8.6s AutomataMinimizationTime, 60 MinimizatonAttempts, 429916 StatesRemovedByMinimization, 59 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 84.5s SsaConstructionTime, 208.9s SatisfiabilityAnalysisTime, 52.1s InterpolantComputationTime, 347997 NumberOfCodeBlocks, 347997 NumberOfCodeBlocksAsserted, 60 NumberOfCheckSat, 627272 ConstructedInterpolants, 0 QuantifiedInterpolants, 705627 SizeOfPredicates, 200 NumberOfNonLiveVariables, 1522628 ConjunctsInSsa, 858 ConjunctsInUnsatCore, 106 InterpolantComputations, 60 PerfectInterpolantSequences, 34404/56238 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