/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.pgm_protocol.6.prop6-func-interl.c


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


This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m
[2023-12-25 20:53:11,153 INFO  L188        SettingsManager]: Resetting all preferences to default values...
[2023-12-25 20:53:11,221 INFO  L114        SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf
[2023-12-25 20:53:11,224 WARN  L101        SettingsManager]: Preference file contains the following unknown settings:
[2023-12-25 20:53:11,224 WARN  L103        SettingsManager]:   * de.uni_freiburg.informatik.ultimate.core.Log level for class
[2023-12-25 20:53:11,247 INFO  L130        SettingsManager]: Preferences different from defaults after loading the file:
[2023-12-25 20:53:11,248 INFO  L151        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2023-12-25 20:53:11,248 INFO  L153        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2023-12-25 20:53:11,249 INFO  L151        SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults:
[2023-12-25 20:53:11,252 INFO  L153        SettingsManager]:  * Use memory slicer=true
[2023-12-25 20:53:11,253 INFO  L151        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2023-12-25 20:53:11,253 INFO  L153        SettingsManager]:  * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2023-12-25 20:53:11,254 INFO  L151        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2023-12-25 20:53:11,255 INFO  L153        SettingsManager]:  * Create parallel compositions if possible=false
[2023-12-25 20:53:11,255 INFO  L153        SettingsManager]:  * Use SBE=true
[2023-12-25 20:53:11,255 INFO  L151        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2023-12-25 20:53:11,255 INFO  L153        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2023-12-25 20:53:11,256 INFO  L153        SettingsManager]:  * Overapproximate operations on floating types=true
[2023-12-25 20:53:11,256 INFO  L153        SettingsManager]:  * Check division by zero=IGNORE
[2023-12-25 20:53:11,256 INFO  L153        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2023-12-25 20:53:11,256 INFO  L153        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2023-12-25 20:53:11,257 INFO  L153        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2023-12-25 20:53:11,257 INFO  L153        SettingsManager]:  * Allow undefined functions=false
[2023-12-25 20:53:11,257 INFO  L153        SettingsManager]:  * Check if freed pointer was valid=false
[2023-12-25 20:53:11,257 INFO  L153        SettingsManager]:  * Use constant arrays=true
[2023-12-25 20:53:11,258 INFO  L151        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2023-12-25 20:53:11,258 INFO  L153        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2023-12-25 20:53:11,258 INFO  L153        SettingsManager]:  * Only consider context switches at boundaries of atomic blocks=true
[2023-12-25 20:53:11,258 INFO  L153        SettingsManager]:  * SMT solver=External_DefaultMode
[2023-12-25 20:53:11,258 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2023-12-25 20:53:11,259 INFO  L151        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2023-12-25 20:53:11,259 INFO  L153        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2023-12-25 20:53:11,260 INFO  L153        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopHeads
[2023-12-25 20:53:11,260 INFO  L153        SettingsManager]:  * Trace refinement strategy=CAMEL
[2023-12-25 20:53:11,260 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2023-12-25 20:53:11,260 INFO  L153        SettingsManager]:  * Apply one-shot large block encoding in concurrent analysis=false
[2023-12-25 20:53:11,260 INFO  L153        SettingsManager]:  * Automaton type used in concurrency analysis=PETRI_NET
[2023-12-25 20:53:11,260 INFO  L153        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2023-12-25 20:53:11,260 INFO  L153        SettingsManager]:  * Order on configurations for Petri net unfoldings=DBO
[2023-12-25 20:53:11,261 INFO  L153        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2023-12-25 20:53:11,261 INFO  L153        SettingsManager]:  * Looper check in Petri net analysis=SEMANTIC
WARNING: An illegal reflective access operation has occurred
WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int)
WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true
[2023-12-25 20:53:11,490 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2023-12-25 20:53:11,511 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2023-12-25 20:53:11,513 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2023-12-25 20:53:11,514 INFO  L270        PluginConnector]: Initializing CDTParser...
[2023-12-25 20:53:11,515 INFO  L274        PluginConnector]: CDTParser initialized
[2023-12-25 20:53:11,516 INFO  L431   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.pgm_protocol.6.prop6-func-interl.c
[2023-12-25 20:53:12,716 INFO  L533              CDTParser]: Created temporary CDT project at NULL
[2023-12-25 20:53:13,202 INFO  L384              CDTParser]: Found 1 translation units.
[2023-12-25 20:53:13,203 INFO  L180              CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.pgm_protocol.6.prop6-func-interl.c
[2023-12-25 20:53:13,244 INFO  L427              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/784775883/db694d763a76407a9279a4d11cf92c7c/FLAG5c4cb2a74
[2023-12-25 20:53:13,259 INFO  L435              CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/784775883/db694d763a76407a9279a4d11cf92c7c
[2023-12-25 20:53:13,262 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2023-12-25 20:53:13,263 INFO  L133        ToolchainWalker]: Walking toolchain with 5 elements.
[2023-12-25 20:53:13,266 INFO  L112        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2023-12-25 20:53:13,266 INFO  L270        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2023-12-25 20:53:13,271 INFO  L274        PluginConnector]: CACSL2BoogieTranslator initialized
[2023-12-25 20:53:13,272 INFO  L184        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.12 08:53:13" (1/1) ...
[2023-12-25 20:53:13,272 INFO  L204        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@100cb99b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 08:53:13, skipping insertion in model container
[2023-12-25 20:53:13,273 INFO  L184        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.12 08:53:13" (1/1) ...
[2023-12-25 20:53:13,475 INFO  L177         MainTranslator]: Built tables and reachable declarations
[2023-12-25 20:53:13,730 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.pgm_protocol.6.prop6-func-interl.c[1179,1192]
[2023-12-25 20:53:14,815 INFO  L209          PostProcessor]: Analyzing one entry point: main
[2023-12-25 20:53:14,826 INFO  L202         MainTranslator]: Completed pre-run
[2023-12-25 20:53:14,837 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.pgm_protocol.6.prop6-func-interl.c[1179,1192]
[2023-12-25 20:53:15,587 INFO  L209          PostProcessor]: Analyzing one entry point: main
[2023-12-25 20:53:15,601 INFO  L206         MainTranslator]: Completed translation
[2023-12-25 20:53:15,602 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 08:53:15 WrapperNode
[2023-12-25 20:53:15,602 INFO  L131        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2023-12-25 20:53:15,603 INFO  L112        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2023-12-25 20:53:15,603 INFO  L270        PluginConnector]: Initializing Boogie Procedure Inliner...
[2023-12-25 20:53:15,603 INFO  L274        PluginConnector]: Boogie Procedure Inliner initialized
[2023-12-25 20:53:15,609 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 08:53:15" (1/1) ...
[2023-12-25 20:53:15,977 INFO  L184        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 08:53:15" (1/1) ...
[2023-12-25 20:53:19,766 INFO  L138                Inliner]: procedures = 17, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 49604
[2023-12-25 20:53:19,766 INFO  L131        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2023-12-25 20:53:19,767 INFO  L112        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2023-12-25 20:53:19,767 INFO  L270        PluginConnector]: Initializing Boogie Preprocessor...
[2023-12-25 20:53:19,767 INFO  L274        PluginConnector]: Boogie Preprocessor initialized
[2023-12-25 20:53:19,775 INFO  L184        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 08:53:15" (1/1) ...
[2023-12-25 20:53:19,775 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 08:53:15" (1/1) ...
[2023-12-25 20:53:20,772 INFO  L184        PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 08:53:15" (1/1) ...
[2023-12-25 20:53:21,360 INFO  L175           MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0].
[2023-12-25 20:53:21,361 INFO  L184        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 08:53:15" (1/1) ...
[2023-12-25 20:53:21,361 INFO  L184        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 08:53:15" (1/1) ...
[2023-12-25 20:53:22,500 INFO  L184        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 08:53:15" (1/1) ...
[2023-12-25 20:53:22,657 INFO  L184        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 08:53:15" (1/1) ...
[2023-12-25 20:53:23,079 INFO  L184        PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 08:53:15" (1/1) ...
[2023-12-25 20:53:23,233 INFO  L184        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 08:53:15" (1/1) ...
[2023-12-25 20:53:24,001 INFO  L131        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2023-12-25 20:53:24,002 INFO  L112        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2023-12-25 20:53:24,002 INFO  L270        PluginConnector]: Initializing RCFGBuilder...
[2023-12-25 20:53:24,002 INFO  L274        PluginConnector]: RCFGBuilder initialized
[2023-12-25 20:53:24,003 INFO  L184        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 08:53:15" (1/1) ...
[2023-12-25 20:53:24,020 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2023-12-25 20:53:24,042 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 20:53:24,087 INFO  L229       MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null)
[2023-12-25 20:53:24,108 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process
[2023-12-25 20:53:24,116 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2023-12-25 20:53:24,116 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int#0
[2023-12-25 20:53:24,116 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2023-12-25 20:53:24,116 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2023-12-25 20:53:25,972 INFO  L241             CfgBuilder]: Building ICFG
[2023-12-25 20:53:25,975 INFO  L267             CfgBuilder]: Building CFG for each procedure with an implementation
[2023-12-25 20:53:45,384 INFO  L282             CfgBuilder]: Performing block encoding
[2023-12-25 20:53:46,177 INFO  L304             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2023-12-25 20:53:46,177 INFO  L309             CfgBuilder]: Removed 1 assume(true) statements.
[2023-12-25 20:53:46,177 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.12 08:53:46 BoogieIcfgContainer
[2023-12-25 20:53:46,179 INFO  L131        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2023-12-25 20:53:46,181 INFO  L112        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2023-12-25 20:53:46,181 INFO  L270        PluginConnector]: Initializing TraceAbstraction...
[2023-12-25 20:53:46,184 INFO  L274        PluginConnector]: TraceAbstraction initialized
[2023-12-25 20:53:46,184 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.12 08:53:13" (1/3) ...
[2023-12-25 20:53:46,185 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@273ca313 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.12 08:53:46, skipping insertion in model container
[2023-12-25 20:53:46,185 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 08:53:15" (2/3) ...
[2023-12-25 20:53:46,187 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@273ca313 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.12 08:53:46, skipping insertion in model container
[2023-12-25 20:53:46,187 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.12 08:53:46" (3/3) ...
[2023-12-25 20:53:46,188 INFO  L112   eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.pgm_protocol.6.prop6-func-interl.c
[2023-12-25 20:53:46,201 INFO  L204   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2023-12-25 20:53:46,202 INFO  L163   ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2023-12-25 20:53:46,354 INFO  L356      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2023-12-25 20:53:46,360 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;@9ff68bd, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2023-12-25 20:53:46,360 INFO  L358      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2023-12-25 20:53:46,392 INFO  L276                IsEmpty]: Start isEmpty. Operand  has 10876 states, 10874 states have (on average 1.6672797498620562) internal successors, (18130), 10875 states have internal predecessors, (18130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 20:53:46,436 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 489
[2023-12-25 20:53:46,436 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 20:53:46,438 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]
[2023-12-25 20:53:46,438 INFO  L420      AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 20:53:46,445 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 20:53:46,446 INFO  L85        PathProgramCache]: Analyzing trace with hash -2001547807, now seen corresponding path program 1 times
[2023-12-25 20:53:46,454 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 20:53:46,454 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1954672087]
[2023-12-25 20:53:46,454 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 20:53:46,455 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 20:53:47,019 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 20:53:48,730 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-25 20:53:48,731 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 20:53:48,731 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1954672087]
[2023-12-25 20:53:48,732 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1954672087] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 20:53:48,732 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 20:53:48,732 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-12-25 20:53:48,733 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [749726775]
[2023-12-25 20:53:48,734 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 20:53:48,740 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-12-25 20:53:48,740 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 20:53:48,773 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-12-25 20:53:48,774 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-12-25 20:53:48,797 INFO  L87              Difference]: Start difference. First operand  has 10876 states, 10874 states have (on average 1.6672797498620562) internal successors, (18130), 10875 states have internal predecessors, (18130), 0 states have call successors, (0), 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 122.0) internal successors, (488), 4 states have internal predecessors, (488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 20:53:49,386 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 20:53:49,386 INFO  L93              Difference]: Finished difference Result 21220 states and 35376 transitions.
[2023-12-25 20:53:49,387 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-12-25 20:53:49,389 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 122.0) internal successors, (488), 4 states have internal predecessors, (488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 488
[2023-12-25 20:53:49,393 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 20:53:49,450 INFO  L225             Difference]: With dead ends: 21220
[2023-12-25 20:53:49,450 INFO  L226             Difference]: Without dead ends: 10876
[2023-12-25 20:53:49,471 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-12-25 20:53:49,474 INFO  L413           NwaCegarLoop]: 18123 mSDtfsCounter, 1 mSDsluCounter, 36241 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 54364 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2023-12-25 20:53:49,474 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 54364 Invalid, 13 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2023-12-25 20:53:49,505 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 10876 states.
[2023-12-25 20:53:49,696 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 10876 to 10876.
[2023-12-25 20:53:49,720 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 10876 states, 10875 states have (on average 1.666942528735632) internal successors, (18128), 10875 states have internal predecessors, (18128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 20:53:49,747 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 10876 states to 10876 states and 18128 transitions.
[2023-12-25 20:53:49,749 INFO  L78                 Accepts]: Start accepts. Automaton has 10876 states and 18128 transitions. Word has length 488
[2023-12-25 20:53:49,750 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 20:53:49,750 INFO  L495      AbstractCegarLoop]: Abstraction has 10876 states and 18128 transitions.
[2023-12-25 20:53:49,751 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 122.0) internal successors, (488), 4 states have internal predecessors, (488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 20:53:49,751 INFO  L276                IsEmpty]: Start isEmpty. Operand 10876 states and 18128 transitions.
[2023-12-25 20:53:49,758 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 490
[2023-12-25 20:53:49,758 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 20:53:49,759 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]
[2023-12-25 20:53:49,759 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2023-12-25 20:53:49,759 INFO  L420      AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 20:53:49,760 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 20:53:49,760 INFO  L85        PathProgramCache]: Analyzing trace with hash -1916652439, now seen corresponding path program 1 times
[2023-12-25 20:53:49,760 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 20:53:49,760 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [387683923]
[2023-12-25 20:53:49,760 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 20:53:49,761 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 20:53:50,073 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 20:53:50,742 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-25 20:53:50,742 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 20:53:50,742 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [387683923]
[2023-12-25 20:53:50,743 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [387683923] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 20:53:50,743 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 20:53:50,743 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-12-25 20:53:50,743 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [397329912]
[2023-12-25 20:53:50,743 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 20:53:50,746 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-12-25 20:53:50,749 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 20:53:50,750 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-12-25 20:53:50,751 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-12-25 20:53:50,751 INFO  L87              Difference]: Start difference. First operand 10876 states and 18128 transitions. Second operand  has 4 states, 4 states have (on average 122.25) internal successors, (489), 4 states have internal predecessors, (489), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 20:53:51,175 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 20:53:51,175 INFO  L93              Difference]: Finished difference Result 21223 states and 35374 transitions.
[2023-12-25 20:53:51,176 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-12-25 20:53:51,176 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 122.25) internal successors, (489), 4 states have internal predecessors, (489), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 489
[2023-12-25 20:53:51,177 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 20:53:51,214 INFO  L225             Difference]: With dead ends: 21223
[2023-12-25 20:53:51,214 INFO  L226             Difference]: Without dead ends: 10879
[2023-12-25 20:53:51,228 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-12-25 20:53:51,230 INFO  L413           NwaCegarLoop]: 18123 mSDtfsCounter, 1 mSDsluCounter, 36239 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 54362 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-12-25 20:53:51,231 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 54362 Invalid, 15 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-12-25 20:53:51,249 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 10879 states.
[2023-12-25 20:53:51,401 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 10879 to 10878.
[2023-12-25 20:53:51,420 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 10878 states, 10877 states have (on average 1.6668198951916888) internal successors, (18130), 10877 states have internal predecessors, (18130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 20:53:51,450 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 10878 states to 10878 states and 18130 transitions.
[2023-12-25 20:53:51,451 INFO  L78                 Accepts]: Start accepts. Automaton has 10878 states and 18130 transitions. Word has length 489
[2023-12-25 20:53:51,452 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 20:53:51,452 INFO  L495      AbstractCegarLoop]: Abstraction has 10878 states and 18130 transitions.
[2023-12-25 20:53:51,452 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 122.25) internal successors, (489), 4 states have internal predecessors, (489), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 20:53:51,452 INFO  L276                IsEmpty]: Start isEmpty. Operand 10878 states and 18130 transitions.
[2023-12-25 20:53:51,458 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 491
[2023-12-25 20:53:51,459 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 20:53:51,460 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]
[2023-12-25 20:53:51,460 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2023-12-25 20:53:51,460 INFO  L420      AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 20:53:51,467 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 20:53:51,468 INFO  L85        PathProgramCache]: Analyzing trace with hash 501099513, now seen corresponding path program 1 times
[2023-12-25 20:53:51,468 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 20:53:51,468 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1613616145]
[2023-12-25 20:53:51,468 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 20:53:51,468 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 20:53:51,697 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 20:53:52,408 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-25 20:53:52,408 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 20:53:52,408 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1613616145]
[2023-12-25 20:53:52,409 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1613616145] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 20:53:52,409 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 20:53:52,409 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-12-25 20:53:52,409 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [828121964]
[2023-12-25 20:53:52,409 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 20:53:52,410 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-12-25 20:53:52,410 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 20:53:52,411 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-12-25 20:53:52,411 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-12-25 20:53:52,411 INFO  L87              Difference]: Start difference. First operand 10878 states and 18130 transitions. Second operand  has 4 states, 4 states have (on average 122.5) internal successors, (490), 4 states have internal predecessors, (490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 20:53:52,945 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 20:53:52,945 INFO  L93              Difference]: Finished difference Result 31560 states and 52603 transitions.
[2023-12-25 20:53:52,946 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-12-25 20:53:52,946 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 122.5) internal successors, (490), 4 states have internal predecessors, (490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 490
[2023-12-25 20:53:52,947 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 20:53:53,006 INFO  L225             Difference]: With dead ends: 31560
[2023-12-25 20:53:53,007 INFO  L226             Difference]: Without dead ends: 21214
[2023-12-25 20:53:53,025 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-12-25 20:53:53,027 INFO  L413           NwaCegarLoop]: 18434 mSDtfsCounter, 17226 mSDsluCounter, 36546 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17226 SdHoareTripleChecker+Valid, 54980 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-12-25 20:53:53,028 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [17226 Valid, 54980 Invalid, 20 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-12-25 20:53:53,054 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 21214 states.
[2023-12-25 20:53:53,253 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 21214 to 10880.
[2023-12-25 20:53:53,271 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 10880 states, 10879 states have (on average 1.6666973067377517) internal successors, (18132), 10879 states have internal predecessors, (18132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 20:53:53,291 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 10880 states to 10880 states and 18132 transitions.
[2023-12-25 20:53:53,292 INFO  L78                 Accepts]: Start accepts. Automaton has 10880 states and 18132 transitions. Word has length 490
[2023-12-25 20:53:53,292 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 20:53:53,292 INFO  L495      AbstractCegarLoop]: Abstraction has 10880 states and 18132 transitions.
[2023-12-25 20:53:53,293 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 122.5) internal successors, (490), 4 states have internal predecessors, (490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 20:53:53,295 INFO  L276                IsEmpty]: Start isEmpty. Operand 10880 states and 18132 transitions.
[2023-12-25 20:53:53,303 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 492
[2023-12-25 20:53:53,304 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 20:53:53,309 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]
[2023-12-25 20:53:53,309 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2023-12-25 20:53:53,309 INFO  L420      AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 20:53:53,309 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 20:53:53,310 INFO  L85        PathProgramCache]: Analyzing trace with hash -47662065, now seen corresponding path program 1 times
[2023-12-25 20:53:53,310 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 20:53:53,310 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1478636213]
[2023-12-25 20:53:53,310 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 20:53:53,310 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 20:53:53,526 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 20:53:54,276 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-25 20:53:54,276 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 20:53:54,276 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1478636213]
[2023-12-25 20:53:54,276 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1478636213] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 20:53:54,276 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 20:53:54,277 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2023-12-25 20:53:54,277 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [41350590]
[2023-12-25 20:53:54,277 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 20:53:54,277 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2023-12-25 20:53:54,278 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 20:53:54,278 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2023-12-25 20:53:54,278 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30
[2023-12-25 20:53:54,279 INFO  L87              Difference]: Start difference. First operand 10880 states and 18132 transitions. Second operand  has 6 states, 6 states have (on average 81.83333333333333) internal successors, (491), 6 states have internal predecessors, (491), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 20:53:55,032 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 20:53:55,033 INFO  L93              Difference]: Finished difference Result 31578 states and 52627 transitions.
[2023-12-25 20:53:55,033 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. 
[2023-12-25 20:53:55,033 INFO  L78                 Accepts]: Start accepts. Automaton has  has 6 states, 6 states have (on average 81.83333333333333) internal successors, (491), 6 states have internal predecessors, (491), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 491
[2023-12-25 20:53:55,034 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 20:53:55,071 INFO  L225             Difference]: With dead ends: 31578
[2023-12-25 20:53:55,071 INFO  L226             Difference]: Without dead ends: 21230
[2023-12-25 20:53:55,088 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72
[2023-12-25 20:53:55,094 INFO  L413           NwaCegarLoop]: 18434 mSDtfsCounter, 34469 mSDsluCounter, 71897 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34469 SdHoareTripleChecker+Valid, 90331 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-12-25 20:53:55,095 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [34469 Valid, 90331 Invalid, 48 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [3 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-12-25 20:53:55,115 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 21230 states.
[2023-12-25 20:53:55,302 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 21230 to 10883.
[2023-12-25 20:53:55,321 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 10883 states, 10882 states have (on average 1.6666972982907553) internal successors, (18137), 10882 states have internal predecessors, (18137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 20:53:55,339 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 10883 states to 10883 states and 18137 transitions.
[2023-12-25 20:53:55,339 INFO  L78                 Accepts]: Start accepts. Automaton has 10883 states and 18137 transitions. Word has length 491
[2023-12-25 20:53:55,340 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 20:53:55,340 INFO  L495      AbstractCegarLoop]: Abstraction has 10883 states and 18137 transitions.
[2023-12-25 20:53:55,340 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 6 states, 6 states have (on average 81.83333333333333) internal successors, (491), 6 states have internal predecessors, (491), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 20:53:55,341 INFO  L276                IsEmpty]: Start isEmpty. Operand 10883 states and 18137 transitions.
[2023-12-25 20:53:55,347 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 493
[2023-12-25 20:53:55,347 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 20:53:55,348 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]
[2023-12-25 20:53:55,348 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3
[2023-12-25 20:53:55,348 INFO  L420      AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 20:53:55,348 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 20:53:55,349 INFO  L85        PathProgramCache]: Analyzing trace with hash 32501587, now seen corresponding path program 1 times
[2023-12-25 20:53:55,349 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 20:53:55,349 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [456101720]
[2023-12-25 20:53:55,349 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 20:53:55,349 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 20:53:55,547 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 20:53:56,328 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-25 20:53:56,330 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 20:53:56,330 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [456101720]
[2023-12-25 20:53:56,330 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [456101720] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 20:53:56,330 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 20:53:56,330 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2023-12-25 20:53:56,330 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [841463808]
[2023-12-25 20:53:56,330 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 20:53:56,331 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2023-12-25 20:53:56,331 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 20:53:56,332 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2023-12-25 20:53:56,332 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30
[2023-12-25 20:53:56,332 INFO  L87              Difference]: Start difference. First operand 10883 states and 18137 transitions. Second operand  has 6 states, 6 states have (on average 82.0) internal successors, (492), 5 states have internal predecessors, (492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 20:53:57,114 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 20:53:57,115 INFO  L93              Difference]: Finished difference Result 31755 states and 52924 transitions.
[2023-12-25 20:53:57,115 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2023-12-25 20:53:57,116 INFO  L78                 Accepts]: Start accepts. Automaton has  has 6 states, 6 states have (on average 82.0) internal successors, (492), 5 states have internal predecessors, (492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 492
[2023-12-25 20:53:57,117 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 20:53:57,157 INFO  L225             Difference]: With dead ends: 31755
[2023-12-25 20:53:57,157 INFO  L226             Difference]: Without dead ends: 21404
[2023-12-25 20:53:57,174 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72
[2023-12-25 20:53:57,175 INFO  L413           NwaCegarLoop]: 18424 mSDtfsCounter, 69641 mSDsluCounter, 53459 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69641 SdHoareTripleChecker+Valid, 71883 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-12-25 20:53:57,175 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [69641 Valid, 71883 Invalid, 30 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [1 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-12-25 20:53:57,197 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 21404 states.
[2023-12-25 20:53:57,380 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 21404 to 11068.
[2023-12-25 20:53:57,395 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 11068 states, 11067 states have (on average 1.6665763079425318) internal successors, (18444), 11067 states have internal predecessors, (18444), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 20:53:57,413 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 11068 states to 11068 states and 18444 transitions.
[2023-12-25 20:53:57,413 INFO  L78                 Accepts]: Start accepts. Automaton has 11068 states and 18444 transitions. Word has length 492
[2023-12-25 20:53:57,414 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 20:53:57,414 INFO  L495      AbstractCegarLoop]: Abstraction has 11068 states and 18444 transitions.
[2023-12-25 20:53:57,414 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 6 states, 6 states have (on average 82.0) internal successors, (492), 5 states have internal predecessors, (492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 20:53:57,414 INFO  L276                IsEmpty]: Start isEmpty. Operand 11068 states and 18444 transitions.
[2023-12-25 20:53:57,880 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 7368
[2023-12-25 20:53:57,881 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 20:53:57,884 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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[2023-12-25 20:53:57,885 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4
[2023-12-25 20:53:57,885 INFO  L420      AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 20:53:57,885 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 20:53:57,887 INFO  L85        PathProgramCache]: Analyzing trace with hash -1869277280, now seen corresponding path program 1 times
[2023-12-25 20:53:57,887 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 20:53:57,887 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1038361828]
[2023-12-25 20:53:57,888 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 20:53:57,888 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 20:53:58,931 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 20:53:58,931 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [673728327]
[2023-12-25 20:53:58,933 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 20:53:58,933 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 20:53:58,934 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 20:53:58,936 INFO  L229       MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-25 20:53:58,943 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process
[2023-12-25 20:54:08,594 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 20:54:08,823 INFO  L262         TraceCheckSpWp]: Trace formula consists of 36908 conjuncts, 6 conjunts are in the unsatisfiable core
[2023-12-25 20:54:09,069 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 20:54:09,269 INFO  L134       CoverageAnalysis]: Checked inductivity of 132 backedges. 132 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-25 20:54:09,269 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 20:54:09,269 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 20:54:09,269 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1038361828]
[2023-12-25 20:54:09,270 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 20:54:09,270 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [673728327]
[2023-12-25 20:54:09,270 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [673728327] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 20:54:09,270 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 20:54:09,271 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2023-12-25 20:54:09,271 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1870070574]
[2023-12-25 20:54:09,271 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 20:54:09,279 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2023-12-25 20:54:09,279 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 20:54:09,286 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2023-12-25 20:54:09,286 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2023-12-25 20:54:09,289 INFO  L87              Difference]: Start difference. First operand 11068 states and 18444 transitions. Second operand  has 3 states, 3 states have (on average 2455.6666666666665) internal successors, (7367), 3 states have internal predecessors, (7367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 20:54:09,615 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 20:54:09,615 INFO  L93              Difference]: Finished difference Result 21424 states and 35703 transitions.
[2023-12-25 20:54:09,619 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2023-12-25 20:54:09,622 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 2455.6666666666665) internal successors, (7367), 3 states have internal predecessors, (7367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7367
[2023-12-25 20:54:09,624 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 20:54:09,641 INFO  L225             Difference]: With dead ends: 21424
[2023-12-25 20:54:09,641 INFO  L226             Difference]: Without dead ends: 11073
[2023-12-25 20:54:09,652 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 7366 GetRequests, 7365 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2023-12-25 20:54:09,653 INFO  L413           NwaCegarLoop]: 18124 mSDtfsCounter, 6 mSDsluCounter, 18119 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 36243 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2023-12-25 20:54:09,653 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 36243 Invalid, 8 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-12-25 20:54:09,667 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 11073 states.
[2023-12-25 20:54:09,784 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 11073 to 11069.
[2023-12-25 20:54:09,798 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 11069 states, 11068 states have (on average 1.666516082399711) internal successors, (18445), 11068 states have internal predecessors, (18445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 20:54:09,820 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 11069 states to 11069 states and 18445 transitions.
[2023-12-25 20:54:09,820 INFO  L78                 Accepts]: Start accepts. Automaton has 11069 states and 18445 transitions. Word has length 7367
[2023-12-25 20:54:09,822 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 20:54:09,822 INFO  L495      AbstractCegarLoop]: Abstraction has 11069 states and 18445 transitions.
[2023-12-25 20:54:09,824 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 2455.6666666666665) internal successors, (7367), 3 states have internal predecessors, (7367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 20:54:09,825 INFO  L276                IsEmpty]: Start isEmpty. Operand 11069 states and 18445 transitions.
[2023-12-25 20:54:10,235 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 7368
[2023-12-25 20:54:10,235 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 20:54:10,238 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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[2023-12-25 20:54:10,345 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0
[2023-12-25 20:54:10,443 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5
[2023-12-25 20:54:10,443 INFO  L420      AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 20:54:10,444 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 20:54:10,446 INFO  L85        PathProgramCache]: Analyzing trace with hash 1973174418, now seen corresponding path program 1 times
[2023-12-25 20:54:10,446 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 20:54:10,446 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [92718969]
[2023-12-25 20:54:10,447 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 20:54:10,447 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 20:54:11,195 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 20:54:11,196 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1650270351]
[2023-12-25 20:54:11,198 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 20:54:11,198 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 20:54:11,198 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 20:54:11,199 INFO  L229       MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-25 20:54:11,201 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process
[2023-12-25 20:54:20,527 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 20:54:20,744 INFO  L262         TraceCheckSpWp]: Trace formula consists of 36909 conjuncts, 12 conjunts are in the unsatisfiable core
[2023-12-25 20:54:20,915 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 20:54:23,321 INFO  L134       CoverageAnalysis]: Checked inductivity of 132 backedges. 132 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-25 20:54:23,321 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 20:54:23,321 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 20:54:23,321 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [92718969]
[2023-12-25 20:54:23,322 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 20:54:23,322 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1650270351]
[2023-12-25 20:54:23,322 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1650270351] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 20:54:23,322 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 20:54:23,323 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2023-12-25 20:54:23,323 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1352334675]
[2023-12-25 20:54:23,323 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 20:54:23,330 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-12-25 20:54:23,330 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 20:54:23,336 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-12-25 20:54:23,336 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-12-25 20:54:23,339 INFO  L87              Difference]: Start difference. First operand 11069 states and 18445 transitions. Second operand  has 4 states, 4 states have (on average 1841.75) internal successors, (7367), 3 states have internal predecessors, (7367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 20:54:28,891 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 20:54:28,891 INFO  L93              Difference]: Finished difference Result 21998 states and 36656 transitions.
[2023-12-25 20:54:28,891 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-12-25 20:54:28,893 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 1841.75) internal successors, (7367), 3 states have internal predecessors, (7367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7367
[2023-12-25 20:54:28,894 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 20:54:28,915 INFO  L225             Difference]: With dead ends: 21998
[2023-12-25 20:54:28,915 INFO  L226             Difference]: Without dead ends: 11646
[2023-12-25 20:54:28,925 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 7367 GetRequests, 7364 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2023-12-25 20:54:28,925 INFO  L413           NwaCegarLoop]: 14041 mSDtfsCounter, 34502 mSDsluCounter, 1457 mSDsCounter, 0 mSdLazyCounter, 6044 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34502 SdHoareTripleChecker+Valid, 15498 SdHoareTripleChecker+Invalid, 6044 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6044 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.3s IncrementalHoareTripleChecker+Time
[2023-12-25 20:54:28,926 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [34502 Valid, 15498 Invalid, 6044 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 6044 Invalid, 0 Unknown, 0 Unchecked, 5.3s Time]
[2023-12-25 20:54:28,940 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 11646 states.
[2023-12-25 20:54:29,054 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 11646 to 11069.
[2023-12-25 20:54:29,068 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 11069 states, 11068 states have (on average 1.6664257318395375) internal successors, (18444), 11068 states have internal predecessors, (18444), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 20:54:29,085 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 11069 states to 11069 states and 18444 transitions.
[2023-12-25 20:54:29,086 INFO  L78                 Accepts]: Start accepts. Automaton has 11069 states and 18444 transitions. Word has length 7367
[2023-12-25 20:54:29,088 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 20:54:29,088 INFO  L495      AbstractCegarLoop]: Abstraction has 11069 states and 18444 transitions.
[2023-12-25 20:54:29,090 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 1841.75) internal successors, (7367), 3 states have internal predecessors, (7367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 20:54:29,090 INFO  L276                IsEmpty]: Start isEmpty. Operand 11069 states and 18444 transitions.
[2023-12-25 20:54:29,470 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 7369
[2023-12-25 20:54:29,470 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 20:54:29,474 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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[2023-12-25 20:54:29,576 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0
[2023-12-25 20:54:29,679 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6
[2023-12-25 20:54:29,679 INFO  L420      AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 20:54:29,680 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 20:54:29,683 INFO  L85        PathProgramCache]: Analyzing trace with hash -572587704, now seen corresponding path program 1 times
[2023-12-25 20:54:29,683 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 20:54:29,683 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1875886654]
[2023-12-25 20:54:29,684 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 20:54:29,684 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 20:54:30,521 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 20:54:30,522 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1529896670]
[2023-12-25 20:54:30,524 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 20:54:30,524 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 20:54:30,524 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 20:54:30,525 INFO  L229       MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-25 20:54:30,527 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process
[2023-12-25 20:54:39,610 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 20:54:39,825 INFO  L262         TraceCheckSpWp]: Trace formula consists of 36910 conjuncts, 12 conjunts are in the unsatisfiable core
[2023-12-25 20:54:39,956 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 20:54:42,210 INFO  L134       CoverageAnalysis]: Checked inductivity of 132 backedges. 132 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-25 20:54:42,211 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 20:54:42,211 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 20:54:42,211 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1875886654]
[2023-12-25 20:54:42,211 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 20:54:42,211 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1529896670]
[2023-12-25 20:54:42,211 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1529896670] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 20:54:42,211 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 20:54:42,212 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2023-12-25 20:54:42,212 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1185574739]
[2023-12-25 20:54:42,212 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 20:54:42,220 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-12-25 20:54:42,220 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 20:54:42,226 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-12-25 20:54:42,226 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-12-25 20:54:42,227 INFO  L87              Difference]: Start difference. First operand 11069 states and 18444 transitions. Second operand  has 4 states, 4 states have (on average 1842.0) internal successors, (7368), 3 states have internal predecessors, (7368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 20:54:47,433 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 20:54:47,433 INFO  L93              Difference]: Finished difference Result 22011 states and 36675 transitions.
[2023-12-25 20:54:47,434 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-12-25 20:54:47,435 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 1842.0) internal successors, (7368), 3 states have internal predecessors, (7368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7368
[2023-12-25 20:54:47,436 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 20:54:47,456 INFO  L225             Difference]: With dead ends: 22011
[2023-12-25 20:54:47,456 INFO  L226             Difference]: Without dead ends: 11659
[2023-12-25 20:54:47,465 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 7368 GetRequests, 7365 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2023-12-25 20:54:47,466 INFO  L413           NwaCegarLoop]: 14060 mSDtfsCounter, 34491 mSDsluCounter, 1477 mSDsCounter, 0 mSdLazyCounter, 6046 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34491 SdHoareTripleChecker+Valid, 15537 SdHoareTripleChecker+Invalid, 6046 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6046 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time
[2023-12-25 20:54:47,466 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [34491 Valid, 15537 Invalid, 6046 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 6046 Invalid, 0 Unknown, 0 Unchecked, 5.0s Time]
[2023-12-25 20:54:47,478 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 11659 states.
[2023-12-25 20:54:47,577 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 11659 to 11069.
[2023-12-25 20:54:47,589 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 11069 states, 11068 states have (on average 1.666335381279364) internal successors, (18443), 11068 states have internal predecessors, (18443), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 20:54:47,604 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 11069 states to 11069 states and 18443 transitions.
[2023-12-25 20:54:47,605 INFO  L78                 Accepts]: Start accepts. Automaton has 11069 states and 18443 transitions. Word has length 7368
[2023-12-25 20:54:47,606 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 20:54:47,607 INFO  L495      AbstractCegarLoop]: Abstraction has 11069 states and 18443 transitions.
[2023-12-25 20:54:47,608 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 1842.0) internal successors, (7368), 3 states have internal predecessors, (7368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 20:54:47,609 INFO  L276                IsEmpty]: Start isEmpty. Operand 11069 states and 18443 transitions.
[2023-12-25 20:54:48,027 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 7370
[2023-12-25 20:54:48,027 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 20:54:48,030 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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[2023-12-25 20:54:48,120 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0
[2023-12-25 20:54:48,230 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 20:54:48,231 INFO  L420      AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 20:54:48,232 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 20:54:48,234 INFO  L85        PathProgramCache]: Analyzing trace with hash 1236146415, now seen corresponding path program 1 times
[2023-12-25 20:54:48,234 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 20:54:48,234 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [496625274]
[2023-12-25 20:54:48,234 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 20:54:48,234 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 20:54:48,872 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 20:54:48,872 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1898789387]
[2023-12-25 20:54:48,874 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 20:54:48,874 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 20:54:48,874 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 20:54:48,875 INFO  L229       MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-25 20:54:48,878 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process
[2023-12-25 20:54:57,992 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 20:54:58,215 INFO  L262         TraceCheckSpWp]: Trace formula consists of 36911 conjuncts, 12 conjunts are in the unsatisfiable core
[2023-12-25 20:54:58,486 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 20:55:00,584 INFO  L134       CoverageAnalysis]: Checked inductivity of 132 backedges. 132 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-25 20:55:00,584 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 20:55:00,584 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 20:55:00,584 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [496625274]
[2023-12-25 20:55:00,584 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 20:55:00,587 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1898789387]
[2023-12-25 20:55:00,587 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1898789387] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 20:55:00,587 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 20:55:00,588 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2023-12-25 20:55:00,589 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [287140588]
[2023-12-25 20:55:00,589 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 20:55:00,597 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-12-25 20:55:00,598 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 20:55:00,608 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-12-25 20:55:00,609 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-12-25 20:55:00,612 INFO  L87              Difference]: Start difference. First operand 11069 states and 18443 transitions. Second operand  has 4 states, 4 states have (on average 1842.25) internal successors, (7369), 3 states have internal predecessors, (7369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 20:55:05,693 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 20:55:05,693 INFO  L93              Difference]: Finished difference Result 22027 states and 36699 transitions.
[2023-12-25 20:55:05,700 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-12-25 20:55:05,702 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 1842.25) internal successors, (7369), 3 states have internal predecessors, (7369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7369
[2023-12-25 20:55:05,703 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 20:55:05,716 INFO  L225             Difference]: With dead ends: 22027
[2023-12-25 20:55:05,717 INFO  L226             Difference]: Without dead ends: 11675
[2023-12-25 20:55:05,724 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 7369 GetRequests, 7366 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2023-12-25 20:55:05,727 INFO  L413           NwaCegarLoop]: 14084 mSDtfsCounter, 34478 mSDsluCounter, 1502 mSDsCounter, 0 mSdLazyCounter, 6048 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34478 SdHoareTripleChecker+Valid, 15586 SdHoareTripleChecker+Invalid, 6048 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6048 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time
[2023-12-25 20:55:05,727 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [34478 Valid, 15586 Invalid, 6048 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6048 Invalid, 0 Unknown, 0 Unchecked, 4.9s Time]
[2023-12-25 20:55:05,741 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 11675 states.
[2023-12-25 20:55:05,834 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 11675 to 11069.
[2023-12-25 20:55:05,847 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 11069 states, 11068 states have (on average 1.6662450307191905) internal successors, (18442), 11068 states have internal predecessors, (18442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 20:55:05,865 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 11069 states to 11069 states and 18442 transitions.
[2023-12-25 20:55:05,865 INFO  L78                 Accepts]: Start accepts. Automaton has 11069 states and 18442 transitions. Word has length 7369
[2023-12-25 20:55:05,867 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 20:55:05,867 INFO  L495      AbstractCegarLoop]: Abstraction has 11069 states and 18442 transitions.
[2023-12-25 20:55:05,869 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 1842.25) internal successors, (7369), 3 states have internal predecessors, (7369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 20:55:05,869 INFO  L276                IsEmpty]: Start isEmpty. Operand 11069 states and 18442 transitions.
[2023-12-25 20:55:06,226 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 7371
[2023-12-25 20:55:06,226 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 20:55:06,229 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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[2023-12-25 20:55:06,325 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0
[2023-12-25 20:55:06,430 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 20:55:06,430 INFO  L420      AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 20:55:06,431 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 20:55:06,432 INFO  L85        PathProgramCache]: Analyzing trace with hash -858846421, now seen corresponding path program 1 times
[2023-12-25 20:55:06,433 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 20:55:06,433 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [285011160]
[2023-12-25 20:55:06,433 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 20:55:06,434 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 20:55:07,087 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 20:55:07,087 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [358334052]
[2023-12-25 20:55:07,089 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 20:55:07,089 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 20:55:07,089 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 20:55:07,090 INFO  L229       MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-25 20:55:07,093 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process
[2023-12-25 20:55:16,302 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 20:55:16,546 INFO  L262         TraceCheckSpWp]: Trace formula consists of 36912 conjuncts, 12 conjunts are in the unsatisfiable core
[2023-12-25 20:55:16,679 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 20:55:18,718 INFO  L134       CoverageAnalysis]: Checked inductivity of 132 backedges. 132 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-25 20:55:18,718 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 20:55:18,718 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 20:55:18,718 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [285011160]
[2023-12-25 20:55:18,718 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 20:55:18,718 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [358334052]
[2023-12-25 20:55:18,719 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [358334052] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 20:55:18,719 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 20:55:18,719 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2023-12-25 20:55:18,720 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1010688250]
[2023-12-25 20:55:18,720 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 20:55:18,727 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-12-25 20:55:18,727 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 20:55:18,733 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-12-25 20:55:18,733 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-12-25 20:55:18,734 INFO  L87              Difference]: Start difference. First operand 11069 states and 18442 transitions. Second operand  has 4 states, 4 states have (on average 1842.5) internal successors, (7370), 3 states have internal predecessors, (7370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 20:55:23,820 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 20:55:23,820 INFO  L93              Difference]: Finished difference Result 22034 states and 36708 transitions.
[2023-12-25 20:55:23,821 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-12-25 20:55:23,823 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 1842.5) internal successors, (7370), 3 states have internal predecessors, (7370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7370
[2023-12-25 20:55:23,824 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 20:55:23,838 INFO  L225             Difference]: With dead ends: 22034
[2023-12-25 20:55:23,838 INFO  L226             Difference]: Without dead ends: 11682
[2023-12-25 20:55:23,847 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 7370 GetRequests, 7367 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2023-12-25 20:55:23,848 INFO  L413           NwaCegarLoop]: 14093 mSDtfsCounter, 34471 mSDsluCounter, 1512 mSDsCounter, 0 mSdLazyCounter, 6050 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34471 SdHoareTripleChecker+Valid, 15605 SdHoareTripleChecker+Invalid, 6050 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6050 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time
[2023-12-25 20:55:23,848 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [34471 Valid, 15605 Invalid, 6050 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6050 Invalid, 0 Unknown, 0 Unchecked, 4.9s Time]
[2023-12-25 20:55:23,863 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 11682 states.
[2023-12-25 20:55:23,965 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 11682 to 11069.
[2023-12-25 20:55:23,978 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 11069 states, 11068 states have (on average 1.666154680159017) internal successors, (18441), 11068 states have internal predecessors, (18441), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 20:55:23,992 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 11069 states to 11069 states and 18441 transitions.
[2023-12-25 20:55:23,993 INFO  L78                 Accepts]: Start accepts. Automaton has 11069 states and 18441 transitions. Word has length 7370
[2023-12-25 20:55:23,994 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 20:55:23,995 INFO  L495      AbstractCegarLoop]: Abstraction has 11069 states and 18441 transitions.
[2023-12-25 20:55:23,996 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 1842.5) internal successors, (7370), 3 states have internal predecessors, (7370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 20:55:23,997 INFO  L276                IsEmpty]: Start isEmpty. Operand 11069 states and 18441 transitions.
[2023-12-25 20:55:24,386 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 7372
[2023-12-25 20:55:24,387 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 20:55:24,390 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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[2023-12-25 20:55:24,512 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0
[2023-12-25 20:55:24,616 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9
[2023-12-25 20:55:24,616 INFO  L420      AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 20:55:24,617 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 20:55:24,619 INFO  L85        PathProgramCache]: Analyzing trace with hash 1476028416, now seen corresponding path program 1 times
[2023-12-25 20:55:24,619 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 20:55:24,619 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [326508047]
[2023-12-25 20:55:24,620 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 20:55:24,620 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 20:55:25,207 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 20:55:25,207 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [32416067]
[2023-12-25 20:55:25,209 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 20:55:25,209 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 20:55:25,210 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 20:55:25,211 INFO  L229       MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-25 20:55:25,213 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process
[2023-12-25 20:55:34,234 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 20:55:34,462 INFO  L262         TraceCheckSpWp]: Trace formula consists of 36913 conjuncts, 12 conjunts are in the unsatisfiable core
[2023-12-25 20:55:34,685 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 20:55:36,641 INFO  L134       CoverageAnalysis]: Checked inductivity of 132 backedges. 132 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-25 20:55:36,641 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 20:55:36,641 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 20:55:36,641 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [326508047]
[2023-12-25 20:55:36,642 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 20:55:36,642 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [32416067]
[2023-12-25 20:55:36,642 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [32416067] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 20:55:36,642 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 20:55:36,643 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2023-12-25 20:55:36,643 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [621115786]
[2023-12-25 20:55:36,643 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 20:55:36,650 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-12-25 20:55:36,650 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 20:55:36,655 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-12-25 20:55:36,656 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-12-25 20:55:36,657 INFO  L87              Difference]: Start difference. First operand 11069 states and 18441 transitions. Second operand  has 4 states, 4 states have (on average 1842.75) internal successors, (7371), 3 states have internal predecessors, (7371), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 20:55:41,820 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 20:55:41,820 INFO  L93              Difference]: Finished difference Result 22038 states and 36712 transitions.
[2023-12-25 20:55:41,820 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-12-25 20:55:41,822 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 1842.75) internal successors, (7371), 3 states have internal predecessors, (7371), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7371
[2023-12-25 20:55:41,823 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 20:55:41,833 INFO  L225             Difference]: With dead ends: 22038
[2023-12-25 20:55:41,833 INFO  L226             Difference]: Without dead ends: 11686
[2023-12-25 20:55:41,843 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 7371 GetRequests, 7368 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2023-12-25 20:55:41,843 INFO  L413           NwaCegarLoop]: 14097 mSDtfsCounter, 34466 mSDsluCounter, 1517 mSDsCounter, 0 mSdLazyCounter, 6052 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34466 SdHoareTripleChecker+Valid, 15614 SdHoareTripleChecker+Invalid, 6052 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6052 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time
[2023-12-25 20:55:41,844 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [34466 Valid, 15614 Invalid, 6052 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 6052 Invalid, 0 Unknown, 0 Unchecked, 5.0s Time]
[2023-12-25 20:55:41,857 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 11686 states.
[2023-12-25 20:55:41,962 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 11686 to 11069.
[2023-12-25 20:55:41,976 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 11069 states, 11068 states have (on average 1.6660643295988435) internal successors, (18440), 11068 states have internal predecessors, (18440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 20:55:41,991 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 11069 states to 11069 states and 18440 transitions.
[2023-12-25 20:55:41,991 INFO  L78                 Accepts]: Start accepts. Automaton has 11069 states and 18440 transitions. Word has length 7371
[2023-12-25 20:55:41,994 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 20:55:41,994 INFO  L495      AbstractCegarLoop]: Abstraction has 11069 states and 18440 transitions.
[2023-12-25 20:55:41,996 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 1842.75) internal successors, (7371), 3 states have internal predecessors, (7371), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 20:55:41,996 INFO  L276                IsEmpty]: Start isEmpty. Operand 11069 states and 18440 transitions.
[2023-12-25 20:55:42,352 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 7373
[2023-12-25 20:55:42,352 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 20:55:42,355 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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[2023-12-25 20:55:42,461 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0
[2023-12-25 20:55:42,575 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 20:55:42,576 INFO  L420      AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 20:55:42,577 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 20:55:42,579 INFO  L85        PathProgramCache]: Analyzing trace with hash -1290800778, now seen corresponding path program 1 times
[2023-12-25 20:55:42,579 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 20:55:42,579 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [207083034]
[2023-12-25 20:55:42,580 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 20:55:42,580 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 20:55:43,261 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 20:55:43,261 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1180564147]
[2023-12-25 20:55:43,263 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 20:55:43,264 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 20:55:43,264 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 20:55:43,265 INFO  L229       MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-25 20:55:43,267 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process
[2023-12-25 20:55:52,358 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 20:55:52,591 INFO  L262         TraceCheckSpWp]: Trace formula consists of 36914 conjuncts, 12 conjunts are in the unsatisfiable core
[2023-12-25 20:55:52,688 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 20:55:54,683 INFO  L134       CoverageAnalysis]: Checked inductivity of 132 backedges. 132 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-25 20:55:54,683 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 20:55:54,683 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 20:55:54,683 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [207083034]
[2023-12-25 20:55:54,683 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 20:55:54,683 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1180564147]
[2023-12-25 20:55:54,683 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1180564147] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 20:55:54,683 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 20:55:54,684 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2023-12-25 20:55:54,684 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1290775034]
[2023-12-25 20:55:54,684 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 20:55:54,689 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-12-25 20:55:54,689 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 20:55:54,693 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-12-25 20:55:54,693 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-12-25 20:55:54,693 INFO  L87              Difference]: Start difference. First operand 11069 states and 18440 transitions. Second operand  has 4 states, 4 states have (on average 1843.0) internal successors, (7372), 3 states have internal predecessors, (7372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 20:55:59,790 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 20:55:59,791 INFO  L93              Difference]: Finished difference Result 22063 states and 36751 transitions.
[2023-12-25 20:55:59,791 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-12-25 20:55:59,793 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 1843.0) internal successors, (7372), 3 states have internal predecessors, (7372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7372
[2023-12-25 20:55:59,794 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 20:55:59,804 INFO  L225             Difference]: With dead ends: 22063
[2023-12-25 20:55:59,805 INFO  L226             Difference]: Without dead ends: 11711
[2023-12-25 20:55:59,813 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 7372 GetRequests, 7369 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2023-12-25 20:55:59,815 INFO  L413           NwaCegarLoop]: 14136 mSDtfsCounter, 34447 mSDsluCounter, 1557 mSDsCounter, 0 mSdLazyCounter, 6054 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34447 SdHoareTripleChecker+Valid, 15693 SdHoareTripleChecker+Invalid, 6054 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6054 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time
[2023-12-25 20:55:59,815 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [34447 Valid, 15693 Invalid, 6054 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 6054 Invalid, 0 Unknown, 0 Unchecked, 4.9s Time]
[2023-12-25 20:55:59,828 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 11711 states.
[2023-12-25 20:55:59,936 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 11711 to 11069.
[2023-12-25 20:55:59,949 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 11069 states, 11068 states have (on average 1.66597397903867) internal successors, (18439), 11068 states have internal predecessors, (18439), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 20:55:59,963 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 11069 states to 11069 states and 18439 transitions.
[2023-12-25 20:55:59,963 INFO  L78                 Accepts]: Start accepts. Automaton has 11069 states and 18439 transitions. Word has length 7372
[2023-12-25 20:55:59,965 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 20:55:59,965 INFO  L495      AbstractCegarLoop]: Abstraction has 11069 states and 18439 transitions.
[2023-12-25 20:55:59,967 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 1843.0) internal successors, (7372), 3 states have internal predecessors, (7372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 20:55:59,967 INFO  L276                IsEmpty]: Start isEmpty. Operand 11069 states and 18439 transitions.
[2023-12-25 20:56:00,296 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 7374
[2023-12-25 20:56:00,296 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 20:56:00,299 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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[2023-12-25 20:56:00,402 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0
[2023-12-25 20:56:00,524 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 20:56:00,524 INFO  L420      AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 20:56:00,525 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 20:56:00,527 INFO  L85        PathProgramCache]: Analyzing trace with hash -1173638667, now seen corresponding path program 1 times
[2023-12-25 20:56:00,527 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 20:56:00,527 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1384110381]
[2023-12-25 20:56:00,528 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 20:56:00,528 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 20:56:01,240 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 20:56:01,240 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2027855638]
[2023-12-25 20:56:01,242 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 20:56:01,242 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 20:56:01,242 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 20:56:01,243 INFO  L229       MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-25 20:56:01,245 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process
[2023-12-25 20:56:10,368 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 20:56:10,610 INFO  L262         TraceCheckSpWp]: Trace formula consists of 36915 conjuncts, 12 conjunts are in the unsatisfiable core
[2023-12-25 20:56:10,703 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 20:56:12,710 INFO  L134       CoverageAnalysis]: Checked inductivity of 132 backedges. 132 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-25 20:56:12,711 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 20:56:12,711 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 20:56:12,711 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1384110381]
[2023-12-25 20:56:12,711 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 20:56:12,711 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2027855638]
[2023-12-25 20:56:12,711 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [2027855638] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 20:56:12,711 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 20:56:12,712 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2023-12-25 20:56:12,712 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [502010986]
[2023-12-25 20:56:12,712 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 20:56:12,717 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-12-25 20:56:12,717 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 20:56:12,722 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-12-25 20:56:12,722 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-12-25 20:56:12,724 INFO  L87              Difference]: Start difference. First operand 11069 states and 18439 transitions. Second operand  has 4 states, 4 states have (on average 1843.25) internal successors, (7373), 3 states have internal predecessors, (7373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 20:56:17,833 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 20:56:17,833 INFO  L93              Difference]: Finished difference Result 22082 states and 36780 transitions.
[2023-12-25 20:56:17,833 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-12-25 20:56:17,835 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 1843.25) internal successors, (7373), 3 states have internal predecessors, (7373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7373
[2023-12-25 20:56:17,835 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 20:56:17,845 INFO  L225             Difference]: With dead ends: 22082
[2023-12-25 20:56:17,845 INFO  L226             Difference]: Without dead ends: 11730
[2023-12-25 20:56:17,852 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 7373 GetRequests, 7370 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2023-12-25 20:56:17,852 INFO  L413           NwaCegarLoop]: 14165 mSDtfsCounter, 34432 mSDsluCounter, 1587 mSDsCounter, 0 mSdLazyCounter, 6056 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34432 SdHoareTripleChecker+Valid, 15752 SdHoareTripleChecker+Invalid, 6056 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6056 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time
[2023-12-25 20:56:17,853 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [34432 Valid, 15752 Invalid, 6056 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6056 Invalid, 0 Unknown, 0 Unchecked, 4.9s Time]
[2023-12-25 20:56:17,863 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 11730 states.
[2023-12-25 20:56:17,962 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 11730 to 11069.
[2023-12-25 20:56:17,974 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 11069 states, 11068 states have (on average 1.6658836284784966) internal successors, (18438), 11068 states have internal predecessors, (18438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 20:56:17,987 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 11069 states to 11069 states and 18438 transitions.
[2023-12-25 20:56:17,987 INFO  L78                 Accepts]: Start accepts. Automaton has 11069 states and 18438 transitions. Word has length 7373
[2023-12-25 20:56:17,988 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 20:56:17,989 INFO  L495      AbstractCegarLoop]: Abstraction has 11069 states and 18438 transitions.
[2023-12-25 20:56:17,990 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 1843.25) internal successors, (7373), 3 states have internal predecessors, (7373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 20:56:17,991 INFO  L276                IsEmpty]: Start isEmpty. Operand 11069 states and 18438 transitions.
[2023-12-25 20:56:18,326 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 7375
[2023-12-25 20:56:18,326 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 20:56:18,328 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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[2023-12-25 20:56:18,429 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0
[2023-12-25 20:56:18,529 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12
[2023-12-25 20:56:18,529 INFO  L420      AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 20:56:18,530 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 20:56:18,532 INFO  L85        PathProgramCache]: Analyzing trace with hash 2043331135, now seen corresponding path program 1 times
[2023-12-25 20:56:18,532 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 20:56:18,532 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1158834149]
[2023-12-25 20:56:18,532 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 20:56:18,533 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 20:56:19,159 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 20:56:19,160 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [788675853]
[2023-12-25 20:56:19,162 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 20:56:19,162 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 20:56:19,162 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 20:56:19,163 INFO  L229       MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-25 20:56:19,165 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process
[2023-12-25 20:56:28,297 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 20:56:28,526 INFO  L262         TraceCheckSpWp]: Trace formula consists of 36916 conjuncts, 12 conjunts are in the unsatisfiable core
[2023-12-25 20:56:28,611 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 20:56:30,571 INFO  L134       CoverageAnalysis]: Checked inductivity of 132 backedges. 132 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-25 20:56:30,571 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 20:56:30,571 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 20:56:30,572 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1158834149]
[2023-12-25 20:56:30,572 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 20:56:30,572 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [788675853]
[2023-12-25 20:56:30,572 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [788675853] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 20:56:30,572 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 20:56:30,572 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2023-12-25 20:56:30,573 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [285091876]
[2023-12-25 20:56:30,573 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 20:56:30,577 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-12-25 20:56:30,577 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 20:56:30,581 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-12-25 20:56:30,582 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-12-25 20:56:30,583 INFO  L87              Difference]: Start difference. First operand 11069 states and 18438 transitions. Second operand  has 4 states, 4 states have (on average 1843.5) internal successors, (7374), 3 states have internal predecessors, (7374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 20:56:35,707 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 20:56:35,708 INFO  L93              Difference]: Finished difference Result 22095 states and 36799 transitions.
[2023-12-25 20:56:35,708 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-12-25 20:56:35,709 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 1843.5) internal successors, (7374), 3 states have internal predecessors, (7374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7374
[2023-12-25 20:56:35,710 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 20:56:35,720 INFO  L225             Difference]: With dead ends: 22095
[2023-12-25 20:56:35,720 INFO  L226             Difference]: Without dead ends: 11743
[2023-12-25 20:56:35,728 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 7374 GetRequests, 7371 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2023-12-25 20:56:35,729 INFO  L413           NwaCegarLoop]: 14184 mSDtfsCounter, 34421 mSDsluCounter, 1607 mSDsCounter, 0 mSdLazyCounter, 6058 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34421 SdHoareTripleChecker+Valid, 15791 SdHoareTripleChecker+Invalid, 6058 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6058 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time
[2023-12-25 20:56:35,729 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [34421 Valid, 15791 Invalid, 6058 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 6058 Invalid, 0 Unknown, 0 Unchecked, 4.9s Time]
[2023-12-25 20:56:35,738 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 11743 states.
[2023-12-25 20:56:35,924 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 11743 to 11069.
[2023-12-25 20:56:35,936 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 11069 states, 11068 states have (on average 1.665793277918323) internal successors, (18437), 11068 states have internal predecessors, (18437), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 20:56:35,950 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 11069 states to 11069 states and 18437 transitions.
[2023-12-25 20:56:35,950 INFO  L78                 Accepts]: Start accepts. Automaton has 11069 states and 18437 transitions. Word has length 7374
[2023-12-25 20:56:35,951 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 20:56:35,951 INFO  L495      AbstractCegarLoop]: Abstraction has 11069 states and 18437 transitions.
[2023-12-25 20:56:35,953 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 1843.5) internal successors, (7374), 3 states have internal predecessors, (7374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 20:56:35,953 INFO  L276                IsEmpty]: Start isEmpty. Operand 11069 states and 18437 transitions.
[2023-12-25 20:56:36,289 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 7376
[2023-12-25 20:56:36,289 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 20:56:36,291 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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[2023-12-25 20:56:36,399 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0
[2023-12-25 20:56:36,491 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13
[2023-12-25 20:56:36,492 INFO  L420      AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 20:56:36,492 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 20:56:36,493 INFO  L85        PathProgramCache]: Analyzing trace with hash -1746378414, now seen corresponding path program 1 times
[2023-12-25 20:56:36,493 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 20:56:36,493 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [54231251]
[2023-12-25 20:56:36,494 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 20:56:36,494 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 20:56:37,108 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 20:56:37,108 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [197477351]
[2023-12-25 20:56:37,110 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 20:56:37,110 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 20:56:37,110 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 20:56:37,111 INFO  L229       MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-25 20:56:37,113 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process
[2023-12-25 20:56:47,377 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 20:56:47,614 INFO  L262         TraceCheckSpWp]: Trace formula consists of 36917 conjuncts, 23 conjunts are in the unsatisfiable core
[2023-12-25 20:56:47,719 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 20:56:51,373 INFO  L134       CoverageAnalysis]: Checked inductivity of 132 backedges. 132 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-25 20:56:51,373 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 20:56:51,374 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 20:56:51,374 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [54231251]
[2023-12-25 20:56:51,374 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 20:56:51,374 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [197477351]
[2023-12-25 20:56:51,374 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [197477351] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 20:56:51,374 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 20:56:51,374 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9
[2023-12-25 20:56:51,375 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1072892048]
[2023-12-25 20:56:51,375 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 20:56:51,378 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 9 states
[2023-12-25 20:56:51,378 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 20:56:51,381 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants.
[2023-12-25 20:56:51,382 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72
[2023-12-25 20:56:51,382 INFO  L87              Difference]: Start difference. First operand 11069 states and 18437 transitions. Second operand  has 9 states, 9 states have (on average 819.4444444444445) internal successors, (7375), 9 states have internal predecessors, (7375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 20:56:52,457 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 20:56:52,457 INFO  L93              Difference]: Finished difference Result 47708 states and 79475 transitions.
[2023-12-25 20:56:52,457 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. 
[2023-12-25 20:56:52,459 INFO  L78                 Accepts]: Start accepts. Automaton has  has 9 states, 9 states have (on average 819.4444444444445) internal successors, (7375), 9 states have internal predecessors, (7375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7375
[2023-12-25 20:56:52,465 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 20:56:52,509 INFO  L225             Difference]: With dead ends: 47708
[2023-12-25 20:56:52,510 INFO  L226             Difference]: Without dead ends: 37356
[2023-12-25 20:56:52,526 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 7397 GetRequests, 7375 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 95 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=139, Invalid=413, Unknown=0, NotChecked=0, Total=552
[2023-12-25 20:56:52,527 INFO  L413           NwaCegarLoop]: 26281 mSDtfsCounter, 125418 mSDsluCounter, 133758 mSDsCounter, 0 mSdLazyCounter, 116 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 125418 SdHoareTripleChecker+Valid, 160039 SdHoareTripleChecker+Invalid, 117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-12-25 20:56:52,527 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [125418 Valid, 160039 Invalid, 117 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [1 Valid, 116 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-12-25 20:56:52,557 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 37356 states.
[2023-12-25 20:56:52,874 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 37356 to 16494.
[2023-12-25 20:56:52,889 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 16494 states, 16493 states have (on average 1.6660401382404657) internal successors, (27478), 16493 states have internal predecessors, (27478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 20:56:52,910 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 16494 states to 16494 states and 27478 transitions.
[2023-12-25 20:56:52,910 INFO  L78                 Accepts]: Start accepts. Automaton has 16494 states and 27478 transitions. Word has length 7375
[2023-12-25 20:56:52,915 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 20:56:52,915 INFO  L495      AbstractCegarLoop]: Abstraction has 16494 states and 27478 transitions.
[2023-12-25 20:56:52,917 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 9 states, 9 states have (on average 819.4444444444445) internal successors, (7375), 9 states have internal predecessors, (7375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 20:56:52,917 INFO  L276                IsEmpty]: Start isEmpty. Operand 16494 states and 27478 transitions.
[2023-12-25 20:56:53,279 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 7377
[2023-12-25 20:56:53,279 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 20:56:53,281 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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[2023-12-25 20:56:53,409 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0
[2023-12-25 20:56:53,481 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14
[2023-12-25 20:56:53,482 INFO  L420      AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 20:56:53,482 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 20:56:53,483 INFO  L85        PathProgramCache]: Analyzing trace with hash -1968463152, now seen corresponding path program 1 times
[2023-12-25 20:56:53,483 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 20:56:53,483 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1402611533]
[2023-12-25 20:56:53,484 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 20:56:53,484 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 20:56:54,043 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 20:56:54,043 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1536013477]
[2023-12-25 20:56:54,044 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 20:56:54,044 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 20:56:54,045 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 20:56:54,045 INFO  L229       MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-25 20:56:54,046 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process
[2023-12-25 20:57:02,993 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 20:57:03,210 INFO  L262         TraceCheckSpWp]: Trace formula consists of 36920 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-12-25 20:57:03,288 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 20:57:03,778 INFO  L134       CoverageAnalysis]: Checked inductivity of 132 backedges. 132 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-25 20:57:03,778 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 20:57:03,779 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 20:57:03,779 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1402611533]
[2023-12-25 20:57:03,779 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 20:57:03,779 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1536013477]
[2023-12-25 20:57:03,779 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1536013477] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 20:57:03,779 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 20:57:03,780 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8
[2023-12-25 20:57:03,780 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [571164152]
[2023-12-25 20:57:03,780 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 20:57:03,785 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 8 states
[2023-12-25 20:57:03,785 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 20:57:03,789 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2023-12-25 20:57:03,789 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56
[2023-12-25 20:57:03,790 INFO  L87              Difference]: Start difference. First operand 16494 states and 27478 transitions. Second operand  has 8 states, 8 states have (on average 922.0) internal successors, (7376), 8 states have internal predecessors, (7376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 20:57:04,622 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 20:57:04,622 INFO  L93              Difference]: Finished difference Result 42792 states and 71287 transitions.
[2023-12-25 20:57:04,623 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. 
[2023-12-25 20:57:04,625 INFO  L78                 Accepts]: Start accepts. Automaton has  has 8 states, 8 states have (on average 922.0) internal successors, (7376), 8 states have internal predecessors, (7376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7376
[2023-12-25 20:57:04,628 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 20:57:04,651 INFO  L225             Difference]: With dead ends: 42792
[2023-12-25 20:57:04,651 INFO  L226             Difference]: Without dead ends: 26830
[2023-12-25 20:57:04,661 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 7384 GetRequests, 7372 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182
[2023-12-25 20:57:04,665 INFO  L413           NwaCegarLoop]: 26281 mSDtfsCounter, 44023 mSDsluCounter, 114144 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44023 SdHoareTripleChecker+Valid, 140425 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-12-25 20:57:04,665 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [44023 Valid, 140425 Invalid, 59 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [1 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-12-25 20:57:04,685 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 26830 states.
[2023-12-25 20:57:04,832 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 26830 to 16496.
[2023-12-25 20:57:04,846 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 16496 states, 16495 states have (on average 1.6659593816307972) internal successors, (27480), 16495 states have internal predecessors, (27480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 20:57:04,863 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 16496 states to 16496 states and 27480 transitions.
[2023-12-25 20:57:04,863 INFO  L78                 Accepts]: Start accepts. Automaton has 16496 states and 27480 transitions. Word has length 7376
[2023-12-25 20:57:04,865 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 20:57:04,865 INFO  L495      AbstractCegarLoop]: Abstraction has 16496 states and 27480 transitions.
[2023-12-25 20:57:04,866 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 8 states, 8 states have (on average 922.0) internal successors, (7376), 8 states have internal predecessors, (7376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 20:57:04,867 INFO  L276                IsEmpty]: Start isEmpty. Operand 16496 states and 27480 transitions.
[2023-12-25 20:57:05,219 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 7378
[2023-12-25 20:57:05,219 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 20:57:05,221 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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[2023-12-25 20:57:05,311 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0
[2023-12-25 20:57:05,421 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15
[2023-12-25 20:57:05,421 INFO  L420      AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 20:57:05,422 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 20:57:05,423 INFO  L85        PathProgramCache]: Analyzing trace with hash -2129484042, now seen corresponding path program 1 times
[2023-12-25 20:57:05,423 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 20:57:05,423 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1327692129]
[2023-12-25 20:57:05,423 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 20:57:05,423 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 20:57:06,068 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 20:57:06,068 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1240737765]
[2023-12-25 20:57:06,070 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 20:57:06,070 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 20:57:06,070 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 20:57:06,071 INFO  L229       MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-25 20:57:06,085 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process
[2023-12-25 20:57:15,125 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 20:57:15,344 INFO  L262         TraceCheckSpWp]: Trace formula consists of 36924 conjuncts, 9 conjunts are in the unsatisfiable core
[2023-12-25 20:57:15,424 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 20:57:22,826 INFO  L134       CoverageAnalysis]: Checked inductivity of 132 backedges. 132 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-25 20:57:22,826 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 20:57:22,826 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 20:57:22,826 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1327692129]
[2023-12-25 20:57:22,826 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 20:57:22,826 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1240737765]
[2023-12-25 20:57:22,827 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1240737765] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 20:57:22,827 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 20:57:22,827 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2023-12-25 20:57:22,828 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1422451891]
[2023-12-25 20:57:22,828 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 20:57:22,832 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-12-25 20:57:22,832 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 20:57:22,836 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-12-25 20:57:22,836 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2023-12-25 20:57:22,838 INFO  L87              Difference]: Start difference. First operand 16496 states and 27480 transitions. Second operand  has 5 states, 5 states have (on average 1475.4) internal successors, (7377), 5 states have internal predecessors, (7377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 20:57:32,724 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 20:57:32,725 INFO  L93              Difference]: Finished difference Result 37952 states and 63226 transitions.
[2023-12-25 20:57:32,725 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2023-12-25 20:57:32,727 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 1475.4) internal successors, (7377), 5 states have internal predecessors, (7377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7377
[2023-12-25 20:57:32,730 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 20:57:32,747 INFO  L225             Difference]: With dead ends: 37952
[2023-12-25 20:57:32,747 INFO  L226             Difference]: Without dead ends: 21988
[2023-12-25 20:57:32,759 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 7378 GetRequests, 7373 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42
[2023-12-25 20:57:32,759 INFO  L413           NwaCegarLoop]: 25442 mSDtfsCounter, 6948 mSDsluCounter, 59223 mSDsCounter, 0 mSdLazyCounter, 15252 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6948 SdHoareTripleChecker+Valid, 84665 SdHoareTripleChecker+Invalid, 15252 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15252 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.4s IncrementalHoareTripleChecker+Time
[2023-12-25 20:57:32,759 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [6948 Valid, 84665 Invalid, 15252 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [0 Valid, 15252 Invalid, 0 Unknown, 0 Unchecked, 9.4s Time]
[2023-12-25 20:57:32,778 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 21988 states.
[2023-12-25 20:57:32,963 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 21988 to 19816.
[2023-12-25 20:57:32,982 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 19816 states, 19815 states have (on average 1.6659601312137269) internal successors, (33011), 19815 states have internal predecessors, (33011), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 20:57:33,002 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 19816 states to 19816 states and 33011 transitions.
[2023-12-25 20:57:33,002 INFO  L78                 Accepts]: Start accepts. Automaton has 19816 states and 33011 transitions. Word has length 7377
[2023-12-25 20:57:33,005 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 20:57:33,005 INFO  L495      AbstractCegarLoop]: Abstraction has 19816 states and 33011 transitions.
[2023-12-25 20:57:33,006 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 1475.4) internal successors, (7377), 5 states have internal predecessors, (7377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 20:57:33,007 INFO  L276                IsEmpty]: Start isEmpty. Operand 19816 states and 33011 transitions.
[2023-12-25 20:57:33,357 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 7379
[2023-12-25 20:57:33,357 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 20:57:33,358 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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[2023-12-25 20:57:33,452 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0
[2023-12-25 20:57:33,559 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16
[2023-12-25 20:57:33,559 INFO  L420      AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 20:57:33,560 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 20:57:33,561 INFO  L85        PathProgramCache]: Analyzing trace with hash 1641753536, now seen corresponding path program 1 times
[2023-12-25 20:57:33,561 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 20:57:33,561 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [191150185]
[2023-12-25 20:57:33,562 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 20:57:33,562 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 20:57:34,317 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 20:57:34,317 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1602736551]
[2023-12-25 20:57:34,319 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 20:57:34,319 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 20:57:34,319 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 20:57:34,320 INFO  L229       MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-25 20:57:34,324 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process
[2023-12-25 20:57:43,334 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 20:57:43,556 INFO  L262         TraceCheckSpWp]: Trace formula consists of 36928 conjuncts, 7 conjunts are in the unsatisfiable core
[2023-12-25 20:57:43,628 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 20:57:46,397 INFO  L134       CoverageAnalysis]: Checked inductivity of 132 backedges. 132 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-25 20:57:46,397 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 20:57:46,397 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 20:57:46,397 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [191150185]
[2023-12-25 20:57:46,397 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 20:57:46,397 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1602736551]
[2023-12-25 20:57:46,398 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1602736551] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 20:57:46,398 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 20:57:46,398 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2023-12-25 20:57:46,399 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1972814836]
[2023-12-25 20:57:46,399 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 20:57:46,403 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2023-12-25 20:57:46,403 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 20:57:46,407 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2023-12-25 20:57:46,408 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30
[2023-12-25 20:57:46,409 INFO  L87              Difference]: Start difference. First operand 19816 states and 33011 transitions. Second operand  has 6 states, 6 states have (on average 1229.6666666666667) internal successors, (7378), 6 states have internal predecessors, (7378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 20:57:57,136 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 20:57:57,136 INFO  L93              Difference]: Finished difference Result 49602 states and 82635 transitions.
[2023-12-25 20:57:57,140 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. 
[2023-12-25 20:57:57,142 INFO  L78                 Accepts]: Start accepts. Automaton has  has 6 states, 6 states have (on average 1229.6666666666667) internal successors, (7378), 6 states have internal predecessors, (7378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7378
[2023-12-25 20:57:57,145 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 20:57:57,167 INFO  L225             Difference]: With dead ends: 49602
[2023-12-25 20:57:57,167 INFO  L226             Difference]: Without dead ends: 24764
[2023-12-25 20:57:57,184 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 7381 GetRequests, 7374 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72
[2023-12-25 20:57:57,184 INFO  L413           NwaCegarLoop]: 13280 mSDtfsCounter, 32278 mSDsluCounter, 39770 mSDsCounter, 0 mSdLazyCounter, 19750 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32278 SdHoareTripleChecker+Valid, 53050 SdHoareTripleChecker+Invalid, 19751 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19750 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.3s IncrementalHoareTripleChecker+Time
[2023-12-25 20:57:57,184 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [32278 Valid, 53050 Invalid, 19751 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 19750 Invalid, 0 Unknown, 0 Unchecked, 10.3s Time]
[2023-12-25 20:57:57,201 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 24764 states.
[2023-12-25 20:57:57,350 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 24764 to 22593.
[2023-12-25 20:57:57,369 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 22593 states, 22592 states have (on average 1.6658994334277621) internal successors, (37636), 22592 states have internal predecessors, (37636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 20:57:57,390 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 22593 states to 22593 states and 37636 transitions.
[2023-12-25 20:57:57,390 INFO  L78                 Accepts]: Start accepts. Automaton has 22593 states and 37636 transitions. Word has length 7378
[2023-12-25 20:57:57,392 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 20:57:57,392 INFO  L495      AbstractCegarLoop]: Abstraction has 22593 states and 37636 transitions.
[2023-12-25 20:57:57,394 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 6 states, 6 states have (on average 1229.6666666666667) internal successors, (7378), 6 states have internal predecessors, (7378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 20:57:57,394 INFO  L276                IsEmpty]: Start isEmpty. Operand 22593 states and 37636 transitions.
[2023-12-25 20:57:57,792 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 7380
[2023-12-25 20:57:57,793 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 20:57:57,795 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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[2023-12-25 20:57:57,908 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0
[2023-12-25 20:57:58,020 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17
[2023-12-25 20:57:58,021 INFO  L420      AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 20:57:58,022 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 20:57:58,023 INFO  L85        PathProgramCache]: Analyzing trace with hash 1919544812, now seen corresponding path program 1 times
[2023-12-25 20:57:58,024 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 20:57:58,024 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1339522204]
[2023-12-25 20:57:58,025 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 20:57:58,025 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 20:57:58,657 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 20:57:58,657 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [818363340]
[2023-12-25 20:57:58,659 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 20:57:58,659 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 20:57:58,659 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 20:57:58,660 INFO  L229       MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-25 20:57:58,662 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process
[2023-12-25 20:58:08,120 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 20:58:08,363 INFO  L262         TraceCheckSpWp]: Trace formula consists of 36931 conjuncts, 74 conjunts are in the unsatisfiable core
[2023-12-25 20:58:08,468 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 20:58:27,991 INFO  L134       CoverageAnalysis]: Checked inductivity of 132 backedges. 132 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-25 20:58:27,991 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 20:58:27,991 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 20:58:27,991 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1339522204]
[2023-12-25 20:58:27,991 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 20:58:27,991 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [818363340]
[2023-12-25 20:58:27,991 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [818363340] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 20:58:27,991 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 20:58:27,992 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28
[2023-12-25 20:58:27,992 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [600441693]
[2023-12-25 20:58:27,993 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 20:58:27,997 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 28 states
[2023-12-25 20:58:27,997 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 20:58:28,002 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants.
[2023-12-25 20:58:28,003 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=701, Unknown=0, NotChecked=0, Total=756
[2023-12-25 20:58:28,005 INFO  L87              Difference]: Start difference. First operand 22593 states and 37636 transitions. Second operand  has 28 states, 28 states have (on average 263.5357142857143) internal successors, (7379), 28 states have internal predecessors, (7379), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 20:58:44,863 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 20:58:44,864 INFO  L93              Difference]: Finished difference Result 261819 states and 436088 transitions.
[2023-12-25 20:58:44,864 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 184 states. 
[2023-12-25 20:58:44,865 INFO  L78                 Accepts]: Start accepts. Automaton has  has 28 states, 28 states have (on average 263.5357142857143) internal successors, (7379), 28 states have internal predecessors, (7379), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7379
[2023-12-25 20:58:44,869 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 20:58:45,075 INFO  L225             Difference]: With dead ends: 261819
[2023-12-25 20:58:45,076 INFO  L226             Difference]: Without dead ends: 239758
[2023-12-25 20:58:45,121 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 7585 GetRequests, 7378 SyntacticMatches, 0 SemanticMatches, 207 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17777 ImplicationChecksByTransitivity, 7.7s TimeCoverageRelationStatistics Valid=7706, Invalid=35766, Unknown=0, NotChecked=0, Total=43472
[2023-12-25 20:58:45,122 INFO  L413           NwaCegarLoop]: 34884 mSDtfsCounter, 1280107 mSDsluCounter, 762546 mSDsCounter, 0 mSdLazyCounter, 1548 mSolverCounterSat, 96 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1280107 SdHoareTripleChecker+Valid, 797430 SdHoareTripleChecker+Invalid, 1644 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.7s SdHoareTripleChecker+Time, 96 IncrementalHoareTripleChecker+Valid, 1548 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time
[2023-12-25 20:58:45,122 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [1280107 Valid, 797430 Invalid, 1644 Unknown, 0 Unchecked, 1.7s Time], IncrementalHoareTripleChecker [96 Valid, 1548 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time]
[2023-12-25 20:58:45,233 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 239758 states.
[2023-12-25 20:58:46,404 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 239758 to 39210.
[2023-12-25 20:58:46,434 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 39210 states, 39209 states have (on average 1.6657400086714784) internal successors, (65312), 39209 states have internal predecessors, (65312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 20:58:46,472 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 39210 states to 39210 states and 65312 transitions.
[2023-12-25 20:58:46,472 INFO  L78                 Accepts]: Start accepts. Automaton has 39210 states and 65312 transitions. Word has length 7379
[2023-12-25 20:58:46,475 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 20:58:46,476 INFO  L495      AbstractCegarLoop]: Abstraction has 39210 states and 65312 transitions.
[2023-12-25 20:58:46,476 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 28 states, 28 states have (on average 263.5357142857143) internal successors, (7379), 28 states have internal predecessors, (7379), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 20:58:46,476 INFO  L276                IsEmpty]: Start isEmpty. Operand 39210 states and 65312 transitions.
[2023-12-25 20:58:46,982 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 7381
[2023-12-25 20:58:46,983 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 20:58:46,985 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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[2023-12-25 20:58:47,117 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0
[2023-12-25 20:58:47,212 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 20:58:47,212 INFO  L420      AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 20:58:47,213 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 20:58:47,214 INFO  L85        PathProgramCache]: Analyzing trace with hash 745020198, now seen corresponding path program 1 times
[2023-12-25 20:58:47,214 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 20:58:47,214 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [135499544]
[2023-12-25 20:58:47,215 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 20:58:47,215 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 20:58:47,755 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 20:58:47,756 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [365634148]
[2023-12-25 20:58:47,757 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 20:58:47,757 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 20:58:47,758 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 20:58:47,759 INFO  L229       MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-25 20:58:47,761 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process
[2023-12-25 20:58:59,758 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 20:58:59,989 INFO  L262         TraceCheckSpWp]: Trace formula consists of 36934 conjuncts, 166 conjunts are in the unsatisfiable core
[2023-12-25 20:59:00,110 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 20:59:14,095 INFO  L134       CoverageAnalysis]: Checked inductivity of 132 backedges. 132 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-25 20:59:14,095 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 20:59:14,095 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 20:59:14,096 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [135499544]
[2023-12-25 20:59:14,096 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 20:59:14,096 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [365634148]
[2023-12-25 20:59:14,096 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [365634148] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 20:59:14,096 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 20:59:14,097 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [57] imperfect sequences [] total 57
[2023-12-25 20:59:14,097 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [891193533]
[2023-12-25 20:59:14,097 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 20:59:14,102 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 57 states
[2023-12-25 20:59:14,102 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 20:59:14,107 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants.
[2023-12-25 20:59:14,108 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=128, Invalid=3064, Unknown=0, NotChecked=0, Total=3192
[2023-12-25 20:59:14,110 INFO  L87              Difference]: Start difference. First operand 39210 states and 65312 transitions. Second operand  has 57 states, 57 states have (on average 129.47368421052633) internal successors, (7380), 57 states have internal predecessors, (7380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 21:00:09,958 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 21:00:09,959 INFO  L93              Difference]: Finished difference Result 479373 states and 798215 transitions.
[2023-12-25 21:00:09,960 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 247 states. 
[2023-12-25 21:00:09,961 INFO  L78                 Accepts]: Start accepts. Automaton has  has 57 states, 57 states have (on average 129.47368421052633) internal successors, (7380), 57 states have internal predecessors, (7380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7380
[2023-12-25 21:00:09,965 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 21:00:10,584 INFO  L225             Difference]: With dead ends: 479373
[2023-12-25 21:00:10,584 INFO  L226             Difference]: Without dead ends: 440695
[2023-12-25 21:00:10,661 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 7644 GetRequests, 7345 SyntacticMatches, 0 SemanticMatches, 299 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33680 ImplicationChecksByTransitivity, 16.9s TimeCoverageRelationStatistics Valid=15052, Invalid=75248, Unknown=0, NotChecked=0, Total=90300
[2023-12-25 21:00:10,663 INFO  L413           NwaCegarLoop]: 36271 mSDtfsCounter, 1267301 mSDsluCounter, 1829927 mSDsCounter, 0 mSdLazyCounter, 10256 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1267301 SdHoareTripleChecker+Valid, 1866198 SdHoareTripleChecker+Invalid, 10321 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.4s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 10256 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time
[2023-12-25 21:00:10,664 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [1267301 Valid, 1866198 Invalid, 10321 Unknown, 0 Unchecked, 3.4s Time], IncrementalHoareTripleChecker [65 Valid, 10256 Invalid, 0 Unknown, 0 Unchecked, 4.9s Time]
[2023-12-25 21:00:10,866 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 440695 states.
[2023-12-25 21:00:13,143 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 440695 to 70290.
[2023-12-25 21:00:13,193 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 70290 states, 70289 states have (on average 1.6644851968302294) internal successors, (116995), 70289 states have internal predecessors, (116995), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 21:00:13,272 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 70290 states to 70290 states and 116995 transitions.
[2023-12-25 21:00:13,272 INFO  L78                 Accepts]: Start accepts. Automaton has 70290 states and 116995 transitions. Word has length 7380
[2023-12-25 21:00:13,277 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 21:00:13,277 INFO  L495      AbstractCegarLoop]: Abstraction has 70290 states and 116995 transitions.
[2023-12-25 21:00:13,279 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 57 states, 57 states have (on average 129.47368421052633) internal successors, (7380), 57 states have internal predecessors, (7380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 21:00:13,279 INFO  L276                IsEmpty]: Start isEmpty. Operand 70290 states and 116995 transitions.
[2023-12-25 21:00:13,842 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 7382
[2023-12-25 21:00:13,843 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 21:00:13,844 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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[2023-12-25 21:00:13,972 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0
[2023-12-25 21:00:14,044 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 21:00:14,045 INFO  L420      AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 21:00:14,045 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 21:00:14,046 INFO  L85        PathProgramCache]: Analyzing trace with hash -878064822, now seen corresponding path program 1 times
[2023-12-25 21:00:14,046 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 21:00:14,047 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1825792953]
[2023-12-25 21:00:14,047 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 21:00:14,047 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 21:00:14,625 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 21:00:14,626 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [45433553]
[2023-12-25 21:00:14,627 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 21:00:14,628 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 21:00:14,628 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 21:00:14,629 INFO  L229       MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-25 21:00:14,631 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process
[2023-12-25 21:00:31,635 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 21:00:31,907 INFO  L262         TraceCheckSpWp]: Trace formula consists of 36937 conjuncts, 7 conjunts are in the unsatisfiable core
[2023-12-25 21:00:32,009 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 21:00:34,766 INFO  L134       CoverageAnalysis]: Checked inductivity of 132 backedges. 132 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-25 21:00:34,767 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 21:00:34,767 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 21:00:34,767 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1825792953]
[2023-12-25 21:00:34,767 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 21:00:34,767 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [45433553]
[2023-12-25 21:00:34,767 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [45433553] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 21:00:34,767 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 21:00:34,768 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2023-12-25 21:00:34,768 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1286556832]
[2023-12-25 21:00:34,768 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 21:00:34,773 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-12-25 21:00:34,773 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 21:00:34,777 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-12-25 21:00:34,777 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2023-12-25 21:00:34,778 INFO  L87              Difference]: Start difference. First operand 70290 states and 116995 transitions. Second operand  has 5 states, 5 states have (on average 1476.2) internal successors, (7381), 5 states have internal predecessors, (7381), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 21:00:44,596 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 21:00:44,596 INFO  L93              Difference]: Finished difference Result 182006 states and 302920 transitions.
[2023-12-25 21:00:44,596 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2023-12-25 21:00:44,598 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 1476.2) internal successors, (7381), 5 states have internal predecessors, (7381), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7381
[2023-12-25 21:00:44,601 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 21:00:44,714 INFO  L225             Difference]: With dead ends: 182006
[2023-12-25 21:00:44,714 INFO  L226             Difference]: Without dead ends: 112248
[2023-12-25 21:00:44,758 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 7382 GetRequests, 7377 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42
[2023-12-25 21:00:44,758 INFO  L413           NwaCegarLoop]: 24786 mSDtfsCounter, 6400 mSDsluCounter, 57913 mSDsCounter, 0 mSdLazyCounter, 14498 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6400 SdHoareTripleChecker+Valid, 82699 SdHoareTripleChecker+Invalid, 14498 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14498 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.1s IncrementalHoareTripleChecker+Time
[2023-12-25 21:00:44,759 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [6400 Valid, 82699 Invalid, 14498 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 14498 Invalid, 0 Unknown, 0 Unchecked, 9.1s Time]
[2023-12-25 21:00:44,829 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 112248 states.
[2023-12-25 21:00:45,838 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 112248 to 103622.
[2023-12-25 21:00:45,916 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 103622 states, 103621 states have (on average 1.6650196388762895) internal successors, (172531), 103621 states have internal predecessors, (172531), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 21:00:46,035 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 103622 states to 103622 states and 172531 transitions.
[2023-12-25 21:00:46,035 INFO  L78                 Accepts]: Start accepts. Automaton has 103622 states and 172531 transitions. Word has length 7381
[2023-12-25 21:00:46,038 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 21:00:46,038 INFO  L495      AbstractCegarLoop]: Abstraction has 103622 states and 172531 transitions.
[2023-12-25 21:00:46,039 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 1476.2) internal successors, (7381), 5 states have internal predecessors, (7381), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 21:00:46,039 INFO  L276                IsEmpty]: Start isEmpty. Operand 103622 states and 172531 transitions.
[2023-12-25 21:00:46,836 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 7382
[2023-12-25 21:00:46,837 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 21:00:46,838 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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[2023-12-25 21:00:46,968 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0
[2023-12-25 21:00:47,038 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 21:00:47,039 INFO  L420      AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 21:00:47,039 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 21:00:47,040 INFO  L85        PathProgramCache]: Analyzing trace with hash 1792464072, now seen corresponding path program 1 times
[2023-12-25 21:00:47,040 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 21:00:47,040 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1388312389]
[2023-12-25 21:00:47,041 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 21:00:47,041 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 21:00:47,650 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 21:00:47,651 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1961069796]
[2023-12-25 21:00:47,652 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 21:00:47,652 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 21:00:47,652 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 21:00:47,653 INFO  L229       MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-25 21:00:47,654 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process
[2023-12-25 21:00:58,317 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 21:00:58,565 INFO  L262         TraceCheckSpWp]: Trace formula consists of 36936 conjuncts, 46 conjunts are in the unsatisfiable core
[2023-12-25 21:00:58,649 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 21:01:01,478 INFO  L134       CoverageAnalysis]: Checked inductivity of 132 backedges. 132 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-25 21:01:01,478 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 21:01:01,479 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 21:01:01,479 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1388312389]
[2023-12-25 21:01:01,479 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 21:01:01,479 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1961069796]
[2023-12-25 21:01:01,479 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1961069796] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 21:01:01,479 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 21:01:01,480 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13
[2023-12-25 21:01:01,480 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [120827453]
[2023-12-25 21:01:01,480 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 21:01:01,485 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 13 states
[2023-12-25 21:01:01,485 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 21:01:01,490 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants.
[2023-12-25 21:01:01,490 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156
[2023-12-25 21:01:01,491 INFO  L87              Difference]: Start difference. First operand 103622 states and 172531 transitions. Second operand  has 13 states, 13 states have (on average 567.7692307692307) internal successors, (7381), 13 states have internal predecessors, (7381), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 21:02:03,067 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 21:02:03,068 INFO  L93              Difference]: Finished difference Result 578804 states and 963778 transitions.
[2023-12-25 21:02:03,069 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. 
[2023-12-25 21:02:03,071 INFO  L78                 Accepts]: Start accepts. Automaton has  has 13 states, 13 states have (on average 567.7692307692307) internal successors, (7381), 13 states have internal predecessors, (7381), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7381
[2023-12-25 21:02:03,074 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 21:02:03,722 INFO  L225             Difference]: With dead ends: 578804
[2023-12-25 21:02:03,722 INFO  L226             Difference]: Without dead ends: 475714
[2023-12-25 21:02:03,807 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 7415 GetRequests, 7375 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 365 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=333, Invalid=1389, Unknown=0, NotChecked=0, Total=1722
[2023-12-25 21:02:03,817 INFO  L413           NwaCegarLoop]: 35042 mSDtfsCounter, 169479 mSDsluCounter, 279649 mSDsCounter, 0 mSdLazyCounter, 125911 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 46.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 169479 SdHoareTripleChecker+Valid, 314691 SdHoareTripleChecker+Invalid, 125914 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.9s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 125911 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 56.8s IncrementalHoareTripleChecker+Time
[2023-12-25 21:02:03,817 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [169479 Valid, 314691 Invalid, 125914 Unknown, 0 Unchecked, 0.9s Time], IncrementalHoareTripleChecker [3 Valid, 125911 Invalid, 0 Unknown, 0 Unchecked, 56.8s Time]
[2023-12-25 21:02:04,127 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 475714 states.
[2023-12-25 21:02:06,690 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 475714 to 103710.
[2023-12-25 21:02:06,773 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 103710 states, 103709 states have (on average 1.6646096288653829) internal successors, (172635), 103709 states have internal predecessors, (172635), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 21:02:06,891 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 103710 states to 103710 states and 172635 transitions.
[2023-12-25 21:02:06,891 INFO  L78                 Accepts]: Start accepts. Automaton has 103710 states and 172635 transitions. Word has length 7381
[2023-12-25 21:02:06,894 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 21:02:06,894 INFO  L495      AbstractCegarLoop]: Abstraction has 103710 states and 172635 transitions.
[2023-12-25 21:02:06,895 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 13 states, 13 states have (on average 567.7692307692307) internal successors, (7381), 13 states have internal predecessors, (7381), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 21:02:06,895 INFO  L276                IsEmpty]: Start isEmpty. Operand 103710 states and 172635 transitions.
[2023-12-25 21:02:07,723 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 7382
[2023-12-25 21:02:07,723 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 21:02:07,724 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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[2023-12-25 21:02:07,854 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0
[2023-12-25 21:02:07,925 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 21:02:07,925 INFO  L420      AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 21:02:07,926 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 21:02:07,926 INFO  L85        PathProgramCache]: Analyzing trace with hash 537199624, now seen corresponding path program 1 times
[2023-12-25 21:02:07,926 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 21:02:07,926 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1172164276]
[2023-12-25 21:02:07,927 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 21:02:07,927 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 21:02:08,524 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 21:02:08,524 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1902374597]
[2023-12-25 21:02:08,526 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 21:02:08,526 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 21:02:08,526 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 21:02:08,527 INFO  L229       MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-25 21:02:08,528 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process
[2023-12-25 21:02:36,141 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 21:02:36,388 INFO  L262         TraceCheckSpWp]: Trace formula consists of 36938 conjuncts, 136 conjunts are in the unsatisfiable core
[2023-12-25 21:02:36,492 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 21:03:04,593 INFO  L134       CoverageAnalysis]: Checked inductivity of 132 backedges. 132 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-25 21:03:04,594 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 21:03:04,594 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 21:03:04,594 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1172164276]
[2023-12-25 21:03:04,594 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 21:03:04,594 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1902374597]
[2023-12-25 21:03:04,594 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1902374597] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 21:03:04,594 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 21:03:04,595 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19
[2023-12-25 21:03:04,595 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1463180634]
[2023-12-25 21:03:04,595 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 21:03:04,598 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 20 states
[2023-12-25 21:03:04,598 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 21:03:04,602 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants.
[2023-12-25 21:03:04,602 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=313, Unknown=0, NotChecked=0, Total=380
[2023-12-25 21:03:04,603 INFO  L87              Difference]: Start difference. First operand 103710 states and 172635 transitions. Second operand  has 20 states, 20 states have (on average 369.05) internal successors, (7381), 19 states have internal predecessors, (7381), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 21:03:55,940 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 21:03:55,940 INFO  L93              Difference]: Finished difference Result 535854 states and 891863 transitions.
[2023-12-25 21:03:55,941 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. 
[2023-12-25 21:03:55,942 INFO  L78                 Accepts]: Start accepts. Automaton has  has 20 states, 20 states have (on average 369.05) internal successors, (7381), 19 states have internal predecessors, (7381), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7381
[2023-12-25 21:03:55,946 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 21:03:56,415 INFO  L225             Difference]: With dead ends: 535854
[2023-12-25 21:03:56,415 INFO  L226             Difference]: Without dead ends: 432676
[2023-12-25 21:03:56,481 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 7398 GetRequests, 7362 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 195 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=256, Invalid=1150, Unknown=0, NotChecked=0, Total=1406
[2023-12-25 21:03:56,483 INFO  L413           NwaCegarLoop]: 20534 mSDtfsCounter, 192779 mSDsluCounter, 262639 mSDsCounter, 0 mSdLazyCounter, 95989 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 39.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 192779 SdHoareTripleChecker+Valid, 283173 SdHoareTripleChecker+Invalid, 95990 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 95989 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 46.9s IncrementalHoareTripleChecker+Time
[2023-12-25 21:03:56,484 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [192779 Valid, 283173 Invalid, 95990 Unknown, 0 Unchecked, 1.0s Time], IncrementalHoareTripleChecker [1 Valid, 95989 Invalid, 0 Unknown, 0 Unchecked, 46.9s Time]
[2023-12-25 21:03:56,731 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 432676 states.
[2023-12-25 21:03:58,881 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 432676 to 126206.
[2023-12-25 21:03:58,983 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 126206 states, 126205 states have (on average 1.6646250148567807) internal successors, (210084), 126205 states have internal predecessors, (210084), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 21:03:59,407 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 126206 states to 126206 states and 210084 transitions.
[2023-12-25 21:03:59,408 INFO  L78                 Accepts]: Start accepts. Automaton has 126206 states and 210084 transitions. Word has length 7381
[2023-12-25 21:03:59,410 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 21:03:59,410 INFO  L495      AbstractCegarLoop]: Abstraction has 126206 states and 210084 transitions.
[2023-12-25 21:03:59,411 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 20 states, 20 states have (on average 369.05) internal successors, (7381), 19 states have internal predecessors, (7381), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 21:03:59,411 INFO  L276                IsEmpty]: Start isEmpty. Operand 126206 states and 210084 transitions.
[2023-12-25 21:04:00,091 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 7382
[2023-12-25 21:04:00,092 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 21:04:00,093 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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[2023-12-25 21:04:00,249 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0
[2023-12-25 21:04:00,293 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 21:04:00,294 INFO  L420      AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 21:04:00,294 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 21:04:00,295 INFO  L85        PathProgramCache]: Analyzing trace with hash 991146122, now seen corresponding path program 1 times
[2023-12-25 21:04:00,295 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 21:04:00,295 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1244992522]
[2023-12-25 21:04:00,296 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 21:04:00,296 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 21:04:00,850 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 21:04:00,850 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1875606420]
[2023-12-25 21:04:00,852 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 21:04:00,852 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 21:04:00,852 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 21:04:00,853 INFO  L229       MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-25 21:04:00,855 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process
[2023-12-25 21:04:30,828 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 21:04:31,079 INFO  L262         TraceCheckSpWp]: Trace formula consists of 36939 conjuncts, 100 conjunts are in the unsatisfiable core
[2023-12-25 21:04:31,280 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 21:04:58,142 INFO  L134       CoverageAnalysis]: Checked inductivity of 132 backedges. 132 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-25 21:04:58,142 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 21:04:58,142 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 21:04:58,142 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1244992522]
[2023-12-25 21:04:58,142 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 21:04:58,142 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1875606420]
[2023-12-25 21:04:58,142 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1875606420] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 21:04:58,142 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 21:04:58,143 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18
[2023-12-25 21:04:58,143 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1627259341]
[2023-12-25 21:04:58,143 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 21:04:58,146 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 19 states
[2023-12-25 21:04:58,146 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 21:04:58,150 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants.
[2023-12-25 21:04:58,150 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=279, Unknown=0, NotChecked=0, Total=342
[2023-12-25 21:04:58,152 INFO  L87              Difference]: Start difference. First operand 126206 states and 210084 transitions. Second operand  has 19 states, 19 states have (on average 388.4736842105263) internal successors, (7381), 18 states have internal predecessors, (7381), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)