/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
[2023-12-16 19:35:37,088 INFO  L188        SettingsManager]: Resetting all preferences to default values...
[2023-12-16 19:35:37,144 INFO  L114        SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf
[2023-12-16 19:35:37,147 WARN  L101        SettingsManager]: Preference file contains the following unknown settings:
[2023-12-16 19:35:37,147 WARN  L103        SettingsManager]:   * de.uni_freiburg.informatik.ultimate.core.Log level for class
[2023-12-16 19:35:37,164 INFO  L130        SettingsManager]: Preferences different from defaults after loading the file:
[2023-12-16 19:35:37,164 INFO  L151        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2023-12-16 19:35:37,165 INFO  L153        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2023-12-16 19:35:37,165 INFO  L151        SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults:
[2023-12-16 19:35:37,168 INFO  L153        SettingsManager]:  * Use memory slicer=true
[2023-12-16 19:35:37,168 INFO  L151        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2023-12-16 19:35:37,168 INFO  L153        SettingsManager]:  * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2023-12-16 19:35:37,169 INFO  L151        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2023-12-16 19:35:37,170 INFO  L153        SettingsManager]:  * Create parallel compositions if possible=false
[2023-12-16 19:35:37,170 INFO  L153        SettingsManager]:  * Use SBE=true
[2023-12-16 19:35:37,170 INFO  L151        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2023-12-16 19:35:37,170 INFO  L153        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2023-12-16 19:35:37,170 INFO  L153        SettingsManager]:  * Overapproximate operations on floating types=true
[2023-12-16 19:35:37,171 INFO  L153        SettingsManager]:  * Check division by zero=IGNORE
[2023-12-16 19:35:37,171 INFO  L153        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2023-12-16 19:35:37,172 INFO  L153        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2023-12-16 19:35:37,172 INFO  L153        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2023-12-16 19:35:37,172 INFO  L153        SettingsManager]:  * Allow undefined functions=false
[2023-12-16 19:35:37,172 INFO  L153        SettingsManager]:  * Check if freed pointer was valid=false
[2023-12-16 19:35:37,172 INFO  L153        SettingsManager]:  * Use constant arrays=true
[2023-12-16 19:35:37,173 INFO  L151        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2023-12-16 19:35:37,173 INFO  L153        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2023-12-16 19:35:37,173 INFO  L153        SettingsManager]:  * Only consider context switches at boundaries of atomic blocks=true
[2023-12-16 19:35:37,173 INFO  L153        SettingsManager]:  * SMT solver=External_DefaultMode
[2023-12-16 19:35:37,173 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2023-12-16 19:35:37,174 INFO  L151        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2023-12-16 19:35:37,174 INFO  L153        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2023-12-16 19:35:37,174 INFO  L153        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopHeads
[2023-12-16 19:35:37,175 INFO  L153        SettingsManager]:  * Trace refinement strategy=CAMEL
[2023-12-16 19:35:37,175 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2023-12-16 19:35:37,175 INFO  L153        SettingsManager]:  * Apply one-shot large block encoding in concurrent analysis=false
[2023-12-16 19:35:37,175 INFO  L153        SettingsManager]:  * Automaton type used in concurrency analysis=PETRI_NET
[2023-12-16 19:35:37,175 INFO  L153        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2023-12-16 19:35:37,175 INFO  L153        SettingsManager]:  * Order on configurations for Petri net unfoldings=DBO
[2023-12-16 19:35:37,175 INFO  L153        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2023-12-16 19:35:37,175 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$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true
[2023-12-16 19:35:37,389 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2023-12-16 19:35:37,408 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2023-12-16 19:35:37,410 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2023-12-16 19:35:37,411 INFO  L270        PluginConnector]: Initializing CDTParser...
[2023-12-16 19:35:37,411 INFO  L274        PluginConnector]: CDTParser initialized
[2023-12-16 19:35:37,412 INFO  L431   ainManager$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
[2023-12-16 19:35:38,438 INFO  L533              CDTParser]: Created temporary CDT project at NULL
[2023-12-16 19:35:38,844 INFO  L384              CDTParser]: Found 1 translation units.
[2023-12-16 19:35:38,845 INFO  L180              CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.lifts.1.prop1-back-serstep.c
[2023-12-16 19:35:38,874 INFO  L427              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1fddd02cb/6f677fe318364ae482a91938ca1b1118/FLAG3d70c82df
[2023-12-16 19:35:38,887 INFO  L435              CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1fddd02cb/6f677fe318364ae482a91938ca1b1118
[2023-12-16 19:35:38,889 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2023-12-16 19:35:38,890 INFO  L133        ToolchainWalker]: Walking toolchain with 5 elements.
[2023-12-16 19:35:38,892 INFO  L112        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2023-12-16 19:35:38,892 INFO  L270        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2023-12-16 19:35:38,895 INFO  L274        PluginConnector]: CACSL2BoogieTranslator initialized
[2023-12-16 19:35:38,895 INFO  L184        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 07:35:38" (1/1) ...
[2023-12-16 19:35:38,896 INFO  L204        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@56eeb7e0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 07:35:38, skipping insertion in model container
[2023-12-16 19:35:38,896 INFO  L184        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 07:35:38" (1/1) ...
[2023-12-16 19:35:39,004 INFO  L177         MainTranslator]: Built tables and reachable declarations
[2023-12-16 19:35:39,235 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]
[2023-12-16 19:35:39,984 INFO  L209          PostProcessor]: Analyzing one entry point: main
[2023-12-16 19:35:39,991 INFO  L202         MainTranslator]: Completed pre-run
[2023-12-16 19:35:39,998 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]
[2023-12-16 19:35:40,512 INFO  L209          PostProcessor]: Analyzing one entry point: main
[2023-12-16 19:35:40,523 INFO  L206         MainTranslator]: Completed translation
[2023-12-16 19:35:40,526 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 07:35:40 WrapperNode
[2023-12-16 19:35:40,526 INFO  L131        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2023-12-16 19:35:40,528 INFO  L112        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2023-12-16 19:35:40,530 INFO  L270        PluginConnector]: Initializing Boogie Procedure Inliner...
[2023-12-16 19:35:40,530 INFO  L274        PluginConnector]: Boogie Procedure Inliner initialized
[2023-12-16 19:35:40,535 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 07:35:40" (1/1) ...
[2023-12-16 19:35:40,741 INFO  L184        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 07:35:40" (1/1) ...
[2023-12-16 19:35:43,082 INFO  L138                Inliner]: procedures = 17, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 36527
[2023-12-16 19:35:43,082 INFO  L131        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2023-12-16 19:35:43,083 INFO  L112        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2023-12-16 19:35:43,083 INFO  L270        PluginConnector]: Initializing Boogie Preprocessor...
[2023-12-16 19:35:43,083 INFO  L274        PluginConnector]: Boogie Preprocessor initialized
[2023-12-16 19:35:43,091 INFO  L184        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 07:35:40" (1/1) ...
[2023-12-16 19:35:43,092 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 07:35:40" (1/1) ...
[2023-12-16 19:35:43,775 INFO  L184        PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 07:35:40" (1/1) ...
[2023-12-16 19:35:44,190 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].
[2023-12-16 19:35:44,190 INFO  L184        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 07:35:40" (1/1) ...
[2023-12-16 19:35:44,190 INFO  L184        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 07:35:40" (1/1) ...
[2023-12-16 19:35:44,974 INFO  L184        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 07:35:40" (1/1) ...
[2023-12-16 19:35:45,064 INFO  L184        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 07:35:40" (1/1) ...
[2023-12-16 19:35:45,220 INFO  L184        PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 07:35:40" (1/1) ...
[2023-12-16 19:35:45,323 INFO  L184        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 07:35:40" (1/1) ...
[2023-12-16 19:35:45,801 INFO  L131        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2023-12-16 19:35:45,805 INFO  L112        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2023-12-16 19:35:45,806 INFO  L270        PluginConnector]: Initializing RCFGBuilder...
[2023-12-16 19:35:45,806 INFO  L274        PluginConnector]: RCFGBuilder initialized
[2023-12-16 19:35:45,807 INFO  L184        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 07:35:40" (1/1) ...
[2023-12-16 19:35:45,811 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2023-12-16 19:35:45,819 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-16 19:35:45,830 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)
[2023-12-16 19:35:45,839 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
[2023-12-16 19:35:45,858 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2023-12-16 19:35:45,858 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int#0
[2023-12-16 19:35:45,858 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2023-12-16 19:35:45,858 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2023-12-16 19:35:47,238 INFO  L241             CfgBuilder]: Building ICFG
[2023-12-16 19:35:47,240 INFO  L267             CfgBuilder]: Building CFG for each procedure with an implementation
[2023-12-16 19:35:59,872 INFO  L282             CfgBuilder]: Performing block encoding
[2023-12-16 19:36:00,236 INFO  L304             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2023-12-16 19:36:00,237 INFO  L309             CfgBuilder]: Removed 1 assume(true) statements.
[2023-12-16 19:36:00,237 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 07:36:00 BoogieIcfgContainer
[2023-12-16 19:36:00,238 INFO  L131        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2023-12-16 19:36:00,240 INFO  L112        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2023-12-16 19:36:00,240 INFO  L270        PluginConnector]: Initializing TraceAbstraction...
[2023-12-16 19:36:00,242 INFO  L274        PluginConnector]: TraceAbstraction initialized
[2023-12-16 19:36:00,243 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.12 07:35:38" (1/3) ...
[2023-12-16 19:36:00,243 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39d473e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 07:36:00, skipping insertion in model container
[2023-12-16 19:36:00,243 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 07:35:40" (2/3) ...
[2023-12-16 19:36:00,244 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39d473e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 07:36:00, skipping insertion in model container
[2023-12-16 19:36:00,244 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 07:36:00" (3/3) ...
[2023-12-16 19:36:00,246 INFO  L112   eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.lifts.1.prop1-back-serstep.c
[2023-12-16 19:36:00,258 INFO  L204   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2023-12-16 19:36:00,259 INFO  L163   ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2023-12-16 19:36:00,361 INFO  L356      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2023-12-16 19:36:00,390 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;@16287b75, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2023-12-16 19:36:00,390 INFO  L358      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2023-12-16 19:36:00,411 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)
[2023-12-16 19:36:00,440 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 685
[2023-12-16 19:36:00,441 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-16 19:36:00,442 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]
[2023-12-16 19:36:00,442 INFO  L420      AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-16 19:36:00,447 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-16 19:36:00,448 INFO  L85        PathProgramCache]: Analyzing trace with hash 1080449071, now seen corresponding path program 1 times
[2023-12-16 19:36:00,454 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-16 19:36:00,454 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1860615005]
[2023-12-16 19:36:00,454 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-16 19:36:00,455 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-16 19:36:01,006 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-16 19:36:02,713 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-16 19:36:02,713 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-16 19:36:02,714 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1860615005]
[2023-12-16 19:36:02,714 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1860615005] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-16 19:36:02,714 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-16 19:36:02,714 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-12-16 19:36:02,716 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1852697586]
[2023-12-16 19:36:02,717 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-16 19:36:02,722 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-12-16 19:36:02,722 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-16 19:36:02,747 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-12-16 19:36:02,747 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-12-16 19:36:02,762 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)
[2023-12-16 19:36:03,068 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-16 19:36:03,070 INFO  L93              Difference]: Finished difference Result 16745 states and 27963 transitions.
[2023-12-16 19:36:03,071 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-12-16 19:36:03,072 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
[2023-12-16 19:36:03,075 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-16 19:36:03,114 INFO  L225             Difference]: With dead ends: 16745
[2023-12-16 19:36:03,114 INFO  L226             Difference]: Without dead ends: 8475
[2023-12-16 19:36:03,132 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
[2023-12-16 19:36:03,135 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
[2023-12-16 19:36:03,136 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]
[2023-12-16 19:36:03,159 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 8475 states.
[2023-12-16 19:36:03,302 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 8475 to 8475.
[2023-12-16 19:36:03,327 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)
[2023-12-16 19:36:03,348 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 8475 states to 8475 states and 14149 transitions.
[2023-12-16 19:36:03,349 INFO  L78                 Accepts]: Start accepts. Automaton has 8475 states and 14149 transitions. Word has length 684
[2023-12-16 19:36:03,351 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-16 19:36:03,351 INFO  L495      AbstractCegarLoop]: Abstraction has 8475 states and 14149 transitions.
[2023-12-16 19:36:03,352 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)
[2023-12-16 19:36:03,352 INFO  L276                IsEmpty]: Start isEmpty. Operand 8475 states and 14149 transitions.
[2023-12-16 19:36:03,361 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 686
[2023-12-16 19:36:03,361 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-16 19:36:03,362 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]
[2023-12-16 19:36:03,362 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2023-12-16 19:36:03,362 INFO  L420      AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-16 19:36:03,362 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-16 19:36:03,363 INFO  L85        PathProgramCache]: Analyzing trace with hash -864088139, now seen corresponding path program 1 times
[2023-12-16 19:36:03,363 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-16 19:36:03,363 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1529896982]
[2023-12-16 19:36:03,363 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-16 19:36:03,364 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-16 19:36:03,680 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-16 19:36:04,399 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-16 19:36:04,399 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-16 19:36:04,400 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1529896982]
[2023-12-16 19:36:04,400 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1529896982] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-16 19:36:04,400 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-16 19:36:04,400 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-12-16 19:36:04,400 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [18628308]
[2023-12-16 19:36:04,400 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-16 19:36:04,403 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-12-16 19:36:04,406 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-16 19:36:04,407 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-12-16 19:36:04,407 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-12-16 19:36:04,407 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)
[2023-12-16 19:36:04,619 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-16 19:36:04,620 INFO  L93              Difference]: Finished difference Result 16748 states and 27961 transitions.
[2023-12-16 19:36:04,621 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-12-16 19:36:04,621 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
[2023-12-16 19:36:04,622 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-16 19:36:04,647 INFO  L225             Difference]: With dead ends: 16748
[2023-12-16 19:36:04,647 INFO  L226             Difference]: Without dead ends: 8478
[2023-12-16 19:36:04,660 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
[2023-12-16 19:36:04,661 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, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2023-12-16 19:36:04,661 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 42425 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-12-16 19:36:04,674 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 8478 states.
[2023-12-16 19:36:04,788 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 8478 to 8477.
[2023-12-16 19:36:04,801 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)
[2023-12-16 19:36:04,818 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 8477 states to 8477 states and 14151 transitions.
[2023-12-16 19:36:04,819 INFO  L78                 Accepts]: Start accepts. Automaton has 8477 states and 14151 transitions. Word has length 685
[2023-12-16 19:36:04,820 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-16 19:36:04,820 INFO  L495      AbstractCegarLoop]: Abstraction has 8477 states and 14151 transitions.
[2023-12-16 19:36:04,820 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)
[2023-12-16 19:36:04,820 INFO  L276                IsEmpty]: Start isEmpty. Operand 8477 states and 14151 transitions.
[2023-12-16 19:36:04,824 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 687
[2023-12-16 19:36:04,825 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-16 19:36:04,825 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]
[2023-12-16 19:36:04,826 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2023-12-16 19:36:04,826 INFO  L420      AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-16 19:36:04,826 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-16 19:36:04,827 INFO  L85        PathProgramCache]: Analyzing trace with hash -1227356919, now seen corresponding path program 1 times
[2023-12-16 19:36:04,827 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-16 19:36:04,827 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1611326623]
[2023-12-16 19:36:04,827 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-16 19:36:04,827 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-16 19:36:05,118 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-16 19:36:05,985 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-16 19:36:05,986 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-16 19:36:05,986 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1611326623]
[2023-12-16 19:36:05,986 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1611326623] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-16 19:36:05,986 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-16 19:36:05,986 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-12-16 19:36:05,987 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [923976124]
[2023-12-16 19:36:05,987 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-16 19:36:05,987 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-12-16 19:36:05,988 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-16 19:36:05,988 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-12-16 19:36:05,990 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2023-12-16 19:36:05,990 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)
[2023-12-16 19:36:06,404 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-16 19:36:06,404 INFO  L93              Difference]: Finished difference Result 25824 states and 43111 transitions.
[2023-12-16 19:36:06,405 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2023-12-16 19:36:06,405 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
[2023-12-16 19:36:06,406 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-16 19:36:06,451 INFO  L225             Difference]: With dead ends: 25824
[2023-12-16 19:36:06,452 INFO  L226             Difference]: Without dead ends: 17552
[2023-12-16 19:36:06,469 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
[2023-12-16 19:36:06,471 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
[2023-12-16 19:36:06,472 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]
[2023-12-16 19:36:06,492 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 17552 states.
[2023-12-16 19:36:06,687 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 17552 to 9289.
[2023-12-16 19:36:06,701 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)
[2023-12-16 19:36:06,716 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 9289 states to 9289 states and 15503 transitions.
[2023-12-16 19:36:06,717 INFO  L78                 Accepts]: Start accepts. Automaton has 9289 states and 15503 transitions. Word has length 686
[2023-12-16 19:36:06,718 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-16 19:36:06,718 INFO  L495      AbstractCegarLoop]: Abstraction has 9289 states and 15503 transitions.
[2023-12-16 19:36:06,719 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)
[2023-12-16 19:36:06,720 INFO  L276                IsEmpty]: Start isEmpty. Operand 9289 states and 15503 transitions.
[2023-12-16 19:36:07,030 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 6052
[2023-12-16 19:36:07,030 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-16 19:36:07,033 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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]
[2023-12-16 19:36:07,034 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2023-12-16 19:36:07,034 INFO  L420      AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-16 19:36:07,034 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-16 19:36:07,035 INFO  L85        PathProgramCache]: Analyzing trace with hash 666661584, now seen corresponding path program 1 times
[2023-12-16 19:36:07,035 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-16 19:36:07,035 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [623377570]
[2023-12-16 19:36:07,036 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-16 19:36:07,036 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-16 19:36:07,660 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-16 19:36:07,660 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1860712625]
[2023-12-16 19:36:07,662 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-16 19:36:07,662 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-16 19:36:07,662 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-16 19:36:07,664 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)
[2023-12-16 19:36:07,665 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process
[2023-12-16 19:36:14,005 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-16 19:36:14,244 INFO  L262         TraceCheckSpWp]: Trace formula consists of 26643 conjuncts, 6 conjunts are in the unsatisfiable core
[2023-12-16 19:36:14,375 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-16 19:36:14,578 INFO  L134       CoverageAnalysis]: Checked inductivity of 546 backedges. 546 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-16 19:36:14,578 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-16 19:36:14,579 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-16 19:36:14,579 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [623377570]
[2023-12-16 19:36:14,579 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-16 19:36:14,579 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1860712625]
[2023-12-16 19:36:14,579 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1860712625] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-16 19:36:14,579 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-16 19:36:14,580 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-12-16 19:36:14,580 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [23624483]
[2023-12-16 19:36:14,580 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-16 19:36:14,585 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-12-16 19:36:14,585 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-16 19:36:14,589 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-12-16 19:36:14,590 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-12-16 19:36:14,591 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)
[2023-12-16 19:36:14,821 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-16 19:36:14,821 INFO  L93              Difference]: Finished difference Result 17571 states and 29329 transitions.
[2023-12-16 19:36:14,821 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-12-16 19:36:14,823 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
[2023-12-16 19:36:14,825 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-16 19:36:14,837 INFO  L225             Difference]: With dead ends: 17571
[2023-12-16 19:36:14,837 INFO  L226             Difference]: Without dead ends: 9299
[2023-12-16 19:36:14,847 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
[2023-12-16 19:36:14,852 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, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2023-12-16 19:36:14,852 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 42422 Invalid, 18 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-12-16 19:36:14,866 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 9299 states.
[2023-12-16 19:36:14,964 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 9299 to 9291.
[2023-12-16 19:36:14,978 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)
[2023-12-16 19:36:14,993 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 9291 states to 9291 states and 15505 transitions.
[2023-12-16 19:36:14,993 INFO  L78                 Accepts]: Start accepts. Automaton has 9291 states and 15505 transitions. Word has length 6051
[2023-12-16 19:36:14,996 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-16 19:36:14,997 INFO  L495      AbstractCegarLoop]: Abstraction has 9291 states and 15505 transitions.
[2023-12-16 19:36:14,998 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)
[2023-12-16 19:36:14,999 INFO  L276                IsEmpty]: Start isEmpty. Operand 9291 states and 15505 transitions.
[2023-12-16 19:36:15,401 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 6052
[2023-12-16 19:36:15,401 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-16 19:36:15,404 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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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[2023-12-16 19:36:15,482 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0
[2023-12-16 19:36:15,620 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
[2023-12-16 19:36:15,621 INFO  L420      AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-16 19:36:15,623 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-16 19:36:15,625 INFO  L85        PathProgramCache]: Analyzing trace with hash 2057667102, now seen corresponding path program 1 times
[2023-12-16 19:36:15,625 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-16 19:36:15,625 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [466392857]
[2023-12-16 19:36:15,626 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-16 19:36:15,626 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-16 19:36:16,250 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-16 19:36:16,250 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1646213996]
[2023-12-16 19:36:16,251 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-16 19:36:16,251 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-16 19:36:16,251 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-16 19:36:16,267 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)
[2023-12-16 19:36:16,292 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process
[2023-12-16 19:36:22,112 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-16 19:36:22,294 INFO  L262         TraceCheckSpWp]: Trace formula consists of 26644 conjuncts, 6 conjunts are in the unsatisfiable core
[2023-12-16 19:36:22,373 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-16 19:36:22,572 INFO  L134       CoverageAnalysis]: Checked inductivity of 546 backedges. 546 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-16 19:36:22,572 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-16 19:36:22,573 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-16 19:36:22,573 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [466392857]
[2023-12-16 19:36:22,573 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-16 19:36:22,573 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1646213996]
[2023-12-16 19:36:22,573 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1646213996] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-16 19:36:22,573 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-16 19:36:22,573 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-12-16 19:36:22,573 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [243249523]
[2023-12-16 19:36:22,573 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-16 19:36:22,578 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-12-16 19:36:22,578 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-16 19:36:22,581 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-12-16 19:36:22,581 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-12-16 19:36:22,582 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)
[2023-12-16 19:36:22,757 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-16 19:36:22,757 INFO  L93              Difference]: Finished difference Result 17574 states and 29331 transitions.
[2023-12-16 19:36:22,757 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-12-16 19:36:22,759 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
[2023-12-16 19:36:22,760 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-16 19:36:22,771 INFO  L225             Difference]: With dead ends: 17574
[2023-12-16 19:36:22,772 INFO  L226             Difference]: Without dead ends: 9300
[2023-12-16 19:36:22,780 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
[2023-12-16 19:36:22,781 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
[2023-12-16 19:36:22,781 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]
[2023-12-16 19:36:22,789 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 9300 states.
[2023-12-16 19:36:22,859 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 9300 to 9292.
[2023-12-16 19:36:22,868 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)
[2023-12-16 19:36:22,878 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 9292 states to 9292 states and 15506 transitions.
[2023-12-16 19:36:22,879 INFO  L78                 Accepts]: Start accepts. Automaton has 9292 states and 15506 transitions. Word has length 6051
[2023-12-16 19:36:22,880 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-16 19:36:22,880 INFO  L495      AbstractCegarLoop]: Abstraction has 9292 states and 15506 transitions.
[2023-12-16 19:36:22,882 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)
[2023-12-16 19:36:22,882 INFO  L276                IsEmpty]: Start isEmpty. Operand 9292 states and 15506 transitions.
[2023-12-16 19:36:23,132 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 6052
[2023-12-16 19:36:23,132 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-16 19:36:23,134 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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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[2023-12-16 19:36:23,202 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0
[2023-12-16 19:36:23,348 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
[2023-12-16 19:36:23,348 INFO  L420      AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-16 19:36:23,349 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-16 19:36:23,350 INFO  L85        PathProgramCache]: Analyzing trace with hash -1771888532, now seen corresponding path program 1 times
[2023-12-16 19:36:23,350 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-16 19:36:23,350 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1403713917]
[2023-12-16 19:36:23,351 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-16 19:36:23,351 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-16 19:36:23,792 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-16 19:36:23,793 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [967810153]
[2023-12-16 19:36:23,796 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-16 19:36:23,796 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-16 19:36:23,797 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-16 19:36:23,800 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)
[2023-12-16 19:36:23,803 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process
[2023-12-16 19:36:29,687 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-16 19:36:29,845 INFO  L262         TraceCheckSpWp]: Trace formula consists of 26645 conjuncts, 6 conjunts are in the unsatisfiable core
[2023-12-16 19:36:29,906 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-16 19:36:30,002 INFO  L134       CoverageAnalysis]: Checked inductivity of 546 backedges. 546 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-16 19:36:30,003 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-16 19:36:30,003 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-16 19:36:30,003 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1403713917]
[2023-12-16 19:36:30,003 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-16 19:36:30,003 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [967810153]
[2023-12-16 19:36:30,003 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [967810153] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-16 19:36:30,003 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-16 19:36:30,003 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-12-16 19:36:30,004 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1951026521]
[2023-12-16 19:36:30,004 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-16 19:36:30,008 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-12-16 19:36:30,008 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-16 19:36:30,011 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-12-16 19:36:30,011 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-12-16 19:36:30,012 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)
[2023-12-16 19:36:30,188 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-16 19:36:30,188 INFO  L93              Difference]: Finished difference Result 17576 states and 29333 transitions.
[2023-12-16 19:36:30,189 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-12-16 19:36:30,190 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
[2023-12-16 19:36:30,191 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-16 19:36:30,202 INFO  L225             Difference]: With dead ends: 17576
[2023-12-16 19:36:30,202 INFO  L226             Difference]: Without dead ends: 9301
[2023-12-16 19:36:30,211 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
[2023-12-16 19:36:30,212 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
[2023-12-16 19:36:30,212 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]
[2023-12-16 19:36:30,221 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 9301 states.
[2023-12-16 19:36:30,291 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 9301 to 9293.
[2023-12-16 19:36:30,302 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)
[2023-12-16 19:36:30,312 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 9293 states to 9293 states and 15507 transitions.
[2023-12-16 19:36:30,312 INFO  L78                 Accepts]: Start accepts. Automaton has 9293 states and 15507 transitions. Word has length 6051
[2023-12-16 19:36:30,314 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-16 19:36:30,314 INFO  L495      AbstractCegarLoop]: Abstraction has 9293 states and 15507 transitions.
[2023-12-16 19:36:30,316 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)
[2023-12-16 19:36:30,316 INFO  L276                IsEmpty]: Start isEmpty. Operand 9293 states and 15507 transitions.
[2023-12-16 19:36:30,595 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 6052
[2023-12-16 19:36:30,595 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-16 19:36:30,598 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-12-16 19:36:30,669 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0
[2023-12-16 19:36:30,798 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
[2023-12-16 19:36:30,798 INFO  L420      AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-16 19:36:30,799 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-16 19:36:30,800 INFO  L85        PathProgramCache]: Analyzing trace with hash 59145914, now seen corresponding path program 1 times
[2023-12-16 19:36:30,800 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-16 19:36:30,800 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1141466793]
[2023-12-16 19:36:30,801 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-16 19:36:30,801 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-16 19:36:31,243 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-16 19:36:31,243 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1158209722]
[2023-12-16 19:36:31,244 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-16 19:36:31,244 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-16 19:36:31,244 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-16 19:36:31,245 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)
[2023-12-16 19:36:31,249 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process
Received shutdown request...
[2023-12-16 19:36:33,752 WARN  L340       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Timeout while monitored process is still running, waiting 1000 ms for graceful end
[2023-12-16 19:36:33,771 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
[2023-12-16 19:36:34,753 ERROR L246   FreeRefinementEngine]: Caught known exception: Timeout or Toolchain cancelled by user
[2023-12-16 19:36:34,757 INFO  L805   garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining)
[2023-12-16 19:36:34,827 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0
[2023-12-16 19:36:34,832 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0
[2023-12-16 19:36:34,957 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
[2023-12-16 19:36:34,958 WARN  L619      AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was analyzing trace of length 6052 with TraceHistMax 2,while AutomatonFreeRefinementEngine was Timeout during CAMEL.
[2023-12-16 19:36:34,961 INFO  L445         BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1]
[2023-12-16 19:36:34,963 INFO  L179   ceAbstractionStarter]: Computing trace abstraction results
[2023-12-16 19:36:34,964 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.12 07:36:34 BoogieIcfgContainer
[2023-12-16 19:36:34,964 INFO  L131        PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2023-12-16 19:36:34,964 INFO  L158              Benchmark]: Toolchain (without parser) took 56074.53ms. Allocated memory was 269.5MB in the beginning and 5.0GB in the end (delta: 4.8GB). Free memory was 206.7MB in the beginning and 3.2GB in the end (delta: -3.0GB). Peak memory consumption was 1.8GB. Max. memory is 8.0GB.
[2023-12-16 19:36:34,965 INFO  L158              Benchmark]: CDTParser took 0.09ms. Allocated memory is still 204.5MB. Free memory is still 151.8MB. There was no memory consumed. Max. memory is 8.0GB.
[2023-12-16 19:36:34,965 INFO  L158              Benchmark]: CACSL2BoogieTranslator took 1634.81ms. Allocated memory was 269.5MB in the beginning and 527.4MB in the end (delta: 257.9MB). Free memory was 206.4MB in the beginning and 355.8MB in the end (delta: -149.3MB). Peak memory consumption was 248.5MB. Max. memory is 8.0GB.
[2023-12-16 19:36:34,965 INFO  L158              Benchmark]: Boogie Procedure Inliner took 2554.92ms. Allocated memory was 527.4MB in the beginning and 3.1GB in the end (delta: 2.5GB). Free memory was 355.8MB in the beginning and 2.5GB in the end (delta: -2.1GB). Peak memory consumption was 518.0MB. Max. memory is 8.0GB.
[2023-12-16 19:36:34,965 INFO  L158              Benchmark]: Boogie Preprocessor took 2718.11ms. Allocated memory is still 3.1GB. Free memory was 2.5GB in the beginning and 2.3GB in the end (delta: 210.7MB). Peak memory consumption was 250.1MB. Max. memory is 8.0GB.
[2023-12-16 19:36:34,965 INFO  L158              Benchmark]: RCFGBuilder took 14432.64ms. Allocated memory was 3.1GB in the beginning and 5.0GB in the end (delta: 2.0GB). Free memory was 2.3GB in the beginning and 3.9GB in the end (delta: -1.6GB). Peak memory consumption was 547.6MB. Max. memory is 8.0GB.
[2023-12-16 19:36:34,965 INFO  L158              Benchmark]: TraceAbstraction took 34724.23ms. Allocated memory is still 5.0GB. Free memory was 3.9GB in the beginning and 3.2GB in the end (delta: 630.5MB). Peak memory consumption was 630.0MB. Max. memory is 8.0GB.
[2023-12-16 19:36:34,966 INFO  L338   ainManager$Toolchain]: #######################  End [Toolchain 1] #######################
 --- Results ---
 * Results from de.uni_freiburg.informatik.ultimate.core:
  - StatisticsResult: Toolchain Benchmarks
    Benchmark results are:
 * CDTParser took 0.09ms. Allocated memory is still 204.5MB. Free memory is still 151.8MB. There was no memory consumed. Max. memory is 8.0GB.
 * CACSL2BoogieTranslator took 1634.81ms. Allocated memory was 269.5MB in the beginning and 527.4MB in the end (delta: 257.9MB). Free memory was 206.4MB in the beginning and 355.8MB in the end (delta: -149.3MB). Peak memory consumption was 248.5MB. Max. memory is 8.0GB.
 * Boogie Procedure Inliner took 2554.92ms. Allocated memory was 527.4MB in the beginning and 3.1GB in the end (delta: 2.5GB). Free memory was 355.8MB in the beginning and 2.5GB in the end (delta: -2.1GB). Peak memory consumption was 518.0MB. Max. memory is 8.0GB.
 * Boogie Preprocessor took 2718.11ms. Allocated memory is still 3.1GB. Free memory was 2.5GB in the beginning and 2.3GB in the end (delta: 210.7MB). Peak memory consumption was 250.1MB. Max. memory is 8.0GB.
 * RCFGBuilder took 14432.64ms. Allocated memory was 3.1GB in the beginning and 5.0GB in the end (delta: 2.0GB). Free memory was 2.3GB in the beginning and 3.9GB in the end (delta: -1.6GB). Peak memory consumption was 547.6MB. Max. memory is 8.0GB.
 * TraceAbstraction took 34724.23ms. Allocated memory is still 5.0GB. Free memory was 3.9GB in the beginning and 3.2GB in the end (delta: 630.5MB). Peak memory consumption was 630.0MB. 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 6052 with TraceHistMax 2,while AutomatonFreeRefinementEngine was Timeout during CAMEL.
  - StatisticsResult: Ultimate Automizer benchmark data
    CFG has 1 procedures, 8475 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 34.7s, OverallIterations: 7, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 1.3s, AutomataDifference: 1.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 56252 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 56252 mSDsluCounter, 255893 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 169680 mSDsCounter, 2 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 94 IncrementalHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 2 mSolverCounterUnsat, 86213 mSDtfsCounter, 94 mSolverCounterSat, 0.4s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 18167 GetRequests, 18151 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=9293occurred in iteration=6, InterpolantAutomatonStates: 26, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.9s AutomataMinimizationTime, 6 MinimizatonAttempts, 8288 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 5.0s SsaConstructionTime, 11.5s SatisfiabilityAnalysisTime, 4.6s InterpolantComputationTime, 20208 NumberOfCodeBlocks, 20208 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 20202 ConstructedInterpolants, 0 QuantifiedInterpolants, 21579 SizeOfPredicates, 3 NumberOfNonLiveVariables, 79932 ConjunctsInSsa, 18 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 PerfectInterpolantSequences, 1638/1638 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