/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.prop5-func-interl.c


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


This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m
[2023-12-25 20:52:54,899 INFO  L188        SettingsManager]: Resetting all preferences to default values...
[2023-12-25 20:52:54,948 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 20:52:54,951 WARN  L101        SettingsManager]: Preference file contains the following unknown settings:
[2023-12-25 20:52:54,952 WARN  L103        SettingsManager]:   * de.uni_freiburg.informatik.ultimate.core.Log level for class
[2023-12-25 20:52:54,970 INFO  L130        SettingsManager]: Preferences different from defaults after loading the file:
[2023-12-25 20:52:54,971 INFO  L151        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2023-12-25 20:52:54,971 INFO  L153        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2023-12-25 20:52:54,971 INFO  L151        SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults:
[2023-12-25 20:52:54,972 INFO  L153        SettingsManager]:  * Use memory slicer=true
[2023-12-25 20:52:54,972 INFO  L151        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2023-12-25 20:52:54,972 INFO  L153        SettingsManager]:  * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2023-12-25 20:52:54,973 INFO  L151        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2023-12-25 20:52:54,973 INFO  L153        SettingsManager]:  * Create parallel compositions if possible=false
[2023-12-25 20:52:54,973 INFO  L153        SettingsManager]:  * Use SBE=true
[2023-12-25 20:52:54,974 INFO  L151        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2023-12-25 20:52:54,974 INFO  L153        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2023-12-25 20:52:54,974 INFO  L153        SettingsManager]:  * Overapproximate operations on floating types=true
[2023-12-25 20:52:54,975 INFO  L153        SettingsManager]:  * Check division by zero=IGNORE
[2023-12-25 20:52:54,975 INFO  L153        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2023-12-25 20:52:54,975 INFO  L153        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2023-12-25 20:52:54,976 INFO  L153        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2023-12-25 20:52:54,976 INFO  L153        SettingsManager]:  * Allow undefined functions=false
[2023-12-25 20:52:54,976 INFO  L153        SettingsManager]:  * Check if freed pointer was valid=false
[2023-12-25 20:52:54,977 INFO  L153        SettingsManager]:  * Use constant arrays=true
[2023-12-25 20:52:54,977 INFO  L151        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2023-12-25 20:52:54,977 INFO  L153        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2023-12-25 20:52:54,978 INFO  L153        SettingsManager]:  * Only consider context switches at boundaries of atomic blocks=true
[2023-12-25 20:52:54,978 INFO  L153        SettingsManager]:  * SMT solver=External_DefaultMode
[2023-12-25 20:52:54,978 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2023-12-25 20:52:54,979 INFO  L151        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2023-12-25 20:52:54,979 INFO  L153        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2023-12-25 20:52:54,979 INFO  L153        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopHeads
[2023-12-25 20:52:54,979 INFO  L153        SettingsManager]:  * Trace refinement strategy=CAMEL
[2023-12-25 20:52:54,980 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2023-12-25 20:52:54,980 INFO  L153        SettingsManager]:  * Apply one-shot large block encoding in concurrent analysis=false
[2023-12-25 20:52:54,980 INFO  L153        SettingsManager]:  * Automaton type used in concurrency analysis=PETRI_NET
[2023-12-25 20:52:54,981 INFO  L153        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2023-12-25 20:52:54,981 INFO  L153        SettingsManager]:  * Order on configurations for Petri net unfoldings=DBO
[2023-12-25 20:52:54,981 INFO  L153        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2023-12-25 20:52:54,981 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$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true
[2023-12-25 20:52:55,145 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2023-12-25 20:52:55,161 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2023-12-25 20:52:55,163 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2023-12-25 20:52:55,164 INFO  L270        PluginConnector]: Initializing CDTParser...
[2023-12-25 20:52:55,164 INFO  L274        PluginConnector]: CDTParser initialized
[2023-12-25 20:52:55,165 INFO  L431   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.pgm_protocol.6.prop5-func-interl.c
[2023-12-25 20:52:56,269 INFO  L533              CDTParser]: Created temporary CDT project at NULL
[2023-12-25 20:52:56,757 INFO  L384              CDTParser]: Found 1 translation units.
[2023-12-25 20:52:56,758 INFO  L180              CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.pgm_protocol.6.prop5-func-interl.c
[2023-12-25 20:52:56,802 INFO  L427              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6818ee99a/788d8a35c87248cb9e43f95eb9b1f7b1/FLAG2df85d56c
[2023-12-25 20:52:56,818 INFO  L435              CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6818ee99a/788d8a35c87248cb9e43f95eb9b1f7b1
[2023-12-25 20:52:56,820 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2023-12-25 20:52:56,822 INFO  L133        ToolchainWalker]: Walking toolchain with 5 elements.
[2023-12-25 20:52:56,825 INFO  L112        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2023-12-25 20:52:56,826 INFO  L270        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2023-12-25 20:52:56,830 INFO  L274        PluginConnector]: CACSL2BoogieTranslator initialized
[2023-12-25 20:52:56,830 INFO  L184        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.12 08:52:56" (1/1) ...
[2023-12-25 20:52:56,832 INFO  L204        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7932ac72 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 08:52:56, skipping insertion in model container
[2023-12-25 20:52:56,832 INFO  L184        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.12 08:52:56" (1/1) ...
[2023-12-25 20:52:56,978 INFO  L177         MainTranslator]: Built tables and reachable declarations
[2023-12-25 20:52:57,277 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.prop5-func-interl.c[1179,1192]
[2023-12-25 20:52:58,514 INFO  L209          PostProcessor]: Analyzing one entry point: main
[2023-12-25 20:52:58,524 INFO  L202         MainTranslator]: Completed pre-run
[2023-12-25 20:52:58,535 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.prop5-func-interl.c[1179,1192]
[2023-12-25 20:52:59,511 INFO  L209          PostProcessor]: Analyzing one entry point: main
[2023-12-25 20:52:59,523 INFO  L206         MainTranslator]: Completed translation
[2023-12-25 20:52:59,525 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 08:52:59 WrapperNode
[2023-12-25 20:52:59,525 INFO  L131        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2023-12-25 20:52:59,526 INFO  L112        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2023-12-25 20:52:59,526 INFO  L270        PluginConnector]: Initializing Boogie Procedure Inliner...
[2023-12-25 20:52:59,526 INFO  L274        PluginConnector]: Boogie Procedure Inliner initialized
[2023-12-25 20:52:59,531 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 08:52:59" (1/1) ...
[2023-12-25 20:53:00,053 INFO  L184        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 08:52:59" (1/1) ...
[2023-12-25 20:53:04,335 INFO  L138                Inliner]: procedures = 17, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 49602
[2023-12-25 20:53:04,335 INFO  L131        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2023-12-25 20:53:04,336 INFO  L112        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2023-12-25 20:53:04,336 INFO  L270        PluginConnector]: Initializing Boogie Preprocessor...
[2023-12-25 20:53:04,336 INFO  L274        PluginConnector]: Boogie Preprocessor initialized
[2023-12-25 20:53:04,346 INFO  L184        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 08:52:59" (1/1) ...
[2023-12-25 20:53:04,346 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 08:52:59" (1/1) ...
[2023-12-25 20:53:05,599 INFO  L184        PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 08:52:59" (1/1) ...
[2023-12-25 20:53:05,988 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 20:53:05,988 INFO  L184        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 08:52:59" (1/1) ...
[2023-12-25 20:53:05,989 INFO  L184        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 08:52:59" (1/1) ...
[2023-12-25 20:53:07,237 INFO  L184        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 08:52:59" (1/1) ...
[2023-12-25 20:53:07,364 INFO  L184        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 08:52:59" (1/1) ...
[2023-12-25 20:53:07,589 INFO  L184        PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 08:52:59" (1/1) ...
[2023-12-25 20:53:07,730 INFO  L184        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 08:52:59" (1/1) ...
[2023-12-25 20:53:08,556 INFO  L131        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2023-12-25 20:53:08,557 INFO  L112        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2023-12-25 20:53:08,557 INFO  L270        PluginConnector]: Initializing RCFGBuilder...
[2023-12-25 20:53:08,557 INFO  L274        PluginConnector]: RCFGBuilder initialized
[2023-12-25 20:53:08,558 INFO  L184        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 08:52:59" (1/1) ...
[2023-12-25 20:53:08,563 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2023-12-25 20:53:08,581 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 20:53:08,615 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 20:53:08,622 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 20:53:08,640 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2023-12-25 20:53:08,640 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int#0
[2023-12-25 20:53:08,640 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2023-12-25 20:53:08,640 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2023-12-25 20:53:10,843 INFO  L241             CfgBuilder]: Building ICFG
[2023-12-25 20:53:10,845 INFO  L267             CfgBuilder]: Building CFG for each procedure with an implementation
[2023-12-25 20:53:30,153 INFO  L282             CfgBuilder]: Performing block encoding
[2023-12-25 20:53:30,731 INFO  L304             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2023-12-25 20:53:30,732 INFO  L309             CfgBuilder]: Removed 1 assume(true) statements.
[2023-12-25 20:53:30,732 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.12 08:53:30 BoogieIcfgContainer
[2023-12-25 20:53:30,733 INFO  L131        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2023-12-25 20:53:30,737 INFO  L112        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2023-12-25 20:53:30,737 INFO  L270        PluginConnector]: Initializing TraceAbstraction...
[2023-12-25 20:53:30,740 INFO  L274        PluginConnector]: TraceAbstraction initialized
[2023-12-25 20:53:30,740 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.12 08:52:56" (1/3) ...
[2023-12-25 20:53:30,741 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47887420 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.12 08:53:30, skipping insertion in model container
[2023-12-25 20:53:30,741 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 08:52:59" (2/3) ...
[2023-12-25 20:53:30,742 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47887420 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.12 08:53:30, skipping insertion in model container
[2023-12-25 20:53:30,742 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.12 08:53:30" (3/3) ...
[2023-12-25 20:53:30,743 INFO  L112   eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.pgm_protocol.6.prop5-func-interl.c
[2023-12-25 20:53:30,758 INFO  L204   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2023-12-25 20:53:30,758 INFO  L163   ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2023-12-25 20:53:30,919 INFO  L356      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2023-12-25 20:53:30,926 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;@2d731c53, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2023-12-25 20:53:30,926 INFO  L358      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2023-12-25 20:53:30,958 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 20:53:30,986 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 487
[2023-12-25 20:53:30,986 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 20:53:30,987 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]
[2023-12-25 20:53:30,988 INFO  L420      AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 20:53:30,992 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 20:53:30,993 INFO  L85        PathProgramCache]: Analyzing trace with hash 1606853880, now seen corresponding path program 1 times
[2023-12-25 20:53:31,000 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 20:53:31,001 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1053569500]
[2023-12-25 20:53:31,001 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 20:53:31,002 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 20:53:31,885 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 20:53:33,787 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 20:53:33,788 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 20:53:33,788 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1053569500]
[2023-12-25 20:53:33,789 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1053569500] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 20:53:33,789 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 20:53:33,789 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-12-25 20:53:33,791 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1360569082]
[2023-12-25 20:53:33,792 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 20:53:33,798 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-12-25 20:53:33,798 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 20:53:33,824 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-12-25 20:53:33,825 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2023-12-25 20:53:33,849 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 5 states, 5 states have (on average 97.2) internal successors, (486), 4 states have internal predecessors, (486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 20:53:47,007 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 20:53:47,007 INFO  L93              Difference]: Finished difference Result 31560 states and 52616 transitions.
[2023-12-25 20:53:47,008 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2023-12-25 20:53:47,010 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 97.2) internal successors, (486), 4 states have internal predecessors, (486), 0 states have call successors, (0), 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 486
[2023-12-25 20:53:47,011 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 20:53:47,107 INFO  L225             Difference]: With dead ends: 31560
[2023-12-25 20:53:47,107 INFO  L226             Difference]: Without dead ends: 21216
[2023-12-25 20:53:47,127 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42
[2023-12-25 20:53:47,130 INFO  L413           NwaCegarLoop]: 13266 mSDtfsCounter, 52127 mSDsluCounter, 26526 mSDsCounter, 0 mSdLazyCounter, 14585 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52127 SdHoareTripleChecker+Valid, 39792 SdHoareTripleChecker+Invalid, 14586 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 14585 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.5s IncrementalHoareTripleChecker+Time
[2023-12-25 20:53:47,131 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [52127 Valid, 39792 Invalid, 14586 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [1 Valid, 14585 Invalid, 0 Unknown, 0 Unchecked, 12.5s Time]
[2023-12-25 20:53:47,173 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 21216 states.
[2023-12-25 20:53:47,488 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 21216 to 11060.
[2023-12-25 20:53:47,524 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 11060 states, 11059 states have (on average 1.6668776562076137) internal successors, (18434), 11059 states have internal predecessors, (18434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 20:53:47,550 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 11060 states to 11060 states and 18434 transitions.
[2023-12-25 20:53:47,551 INFO  L78                 Accepts]: Start accepts. Automaton has 11060 states and 18434 transitions. Word has length 486
[2023-12-25 20:53:47,556 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 20:53:47,557 INFO  L495      AbstractCegarLoop]: Abstraction has 11060 states and 18434 transitions.
[2023-12-25 20:53:47,558 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 97.2) internal successors, (486), 4 states have internal predecessors, (486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 20:53:47,558 INFO  L276                IsEmpty]: Start isEmpty. Operand 11060 states and 18434 transitions.
[2023-12-25 20:53:47,566 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 488
[2023-12-25 20:53:47,566 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 20:53:47,567 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]
[2023-12-25 20:53:47,567 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2023-12-25 20:53:47,567 INFO  L420      AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 20:53:47,568 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 20:53:47,568 INFO  L85        PathProgramCache]: Analyzing trace with hash 1134022898, now seen corresponding path program 1 times
[2023-12-25 20:53:47,568 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 20:53:47,569 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [381082633]
[2023-12-25 20:53:47,569 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 20:53:47,569 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 20:53:47,831 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 20:53:48,847 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 20:53:48,847 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 20:53:48,848 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [381082633]
[2023-12-25 20:53:48,848 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [381082633] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 20:53:48,848 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 20:53:48,848 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-12-25 20:53:48,849 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [718918946]
[2023-12-25 20:53:48,849 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 20:53:48,852 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-12-25 20:53:48,855 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 20:53:48,856 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-12-25 20:53:48,856 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-12-25 20:53:48,857 INFO  L87              Difference]: Start difference. First operand 11060 states and 18434 transitions. Second operand  has 4 states, 4 states have (on average 121.75) internal successors, (487), 4 states have internal predecessors, (487), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 20:53:49,134 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 20:53:49,135 INFO  L93              Difference]: Finished difference Result 11064 states and 18438 transitions.
[2023-12-25 20:53:49,135 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-12-25 20:53:49,136 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 121.75) internal successors, (487), 4 states have internal predecessors, (487), 0 states have call successors, (0), 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 487
[2023-12-25 20:53:49,137 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 20:53:49,173 INFO  L225             Difference]: With dead ends: 11064
[2023-12-25 20:53:49,173 INFO  L226             Difference]: Without dead ends: 11062
[2023-12-25 20:53:49,178 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 20:53:49,179 INFO  L413           NwaCegarLoop]: 18123 mSDtfsCounter, 1 mSDsluCounter, 36241 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s 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, 0.1s IncrementalHoareTripleChecker+Time
[2023-12-25 20:53:49,180 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 54364 Invalid, 13 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-12-25 20:53:49,197 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 11062 states.
[2023-12-25 20:53:49,423 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 11062 to 11062.
[2023-12-25 20:53:49,441 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 11062 states, 11061 states have (on average 1.666757074405569) internal successors, (18436), 11061 states have internal predecessors, (18436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 20:53:49,463 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 11062 states to 11062 states and 18436 transitions.
[2023-12-25 20:53:49,464 INFO  L78                 Accepts]: Start accepts. Automaton has 11062 states and 18436 transitions. Word has length 487
[2023-12-25 20:53:49,465 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 20:53:49,465 INFO  L495      AbstractCegarLoop]: Abstraction has 11062 states and 18436 transitions.
[2023-12-25 20:53:49,465 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 121.75) internal successors, (487), 4 states have internal predecessors, (487), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 20:53:49,465 INFO  L276                IsEmpty]: Start isEmpty. Operand 11062 states and 18436 transitions.
[2023-12-25 20:53:49,472 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 489
[2023-12-25 20:53:49,472 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 20:53:49,473 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 20:53:49,473 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2023-12-25 20:53:49,473 INFO  L420      AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 20:53:49,480 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 20:53:49,481 INFO  L85        PathProgramCache]: Analyzing trace with hash 796699310, now seen corresponding path program 1 times
[2023-12-25 20:53:49,482 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 20:53:49,482 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [421816760]
[2023-12-25 20:53:49,482 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 20:53:49,482 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 20:53:49,697 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 20:53:50,230 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 20:53:50,230 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 20:53:50,231 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [421816760]
[2023-12-25 20:53:50,231 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [421816760] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 20:53:50,231 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 20:53:50,231 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-12-25 20:53:50,232 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1824955893]
[2023-12-25 20:53:50,232 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 20:53:50,296 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-12-25 20:53:50,296 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 20:53:50,297 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-12-25 20:53:50,297 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-12-25 20:53:50,298 INFO  L87              Difference]: Start difference. First operand 11062 states and 18436 transitions. 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 20:53:50,593 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 20:53:50,593 INFO  L93              Difference]: Finished difference Result 21409 states and 35682 transitions.
[2023-12-25 20:53:50,594 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-12-25 20:53:50,594 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 20:53:50,595 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 20:53:50,613 INFO  L225             Difference]: With dead ends: 21409
[2023-12-25 20:53:50,613 INFO  L226             Difference]: Without dead ends: 11065
[2023-12-25 20:53:50,632 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 20:53:50,634 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 20:53:50,636 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 20:53:50,651 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 11065 states.
[2023-12-25 20:53:50,786 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 11065 to 11064.
[2023-12-25 20:53:50,804 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 11064 states, 11063 states have (on average 1.6666365362017537) internal successors, (18438), 11063 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 20:53:50,822 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 11064 states to 11064 states and 18438 transitions.
[2023-12-25 20:53:50,822 INFO  L78                 Accepts]: Start accepts. Automaton has 11064 states and 18438 transitions. Word has length 488
[2023-12-25 20:53:50,823 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 20:53:50,823 INFO  L495      AbstractCegarLoop]: Abstraction has 11064 states and 18438 transitions.
[2023-12-25 20:53:50,824 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 20:53:50,825 INFO  L276                IsEmpty]: Start isEmpty. Operand 11064 states and 18438 transitions.
[2023-12-25 20:53:50,834 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 490
[2023-12-25 20:53:50,835 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 20:53:50,835 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 20:53:50,835 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2023-12-25 20:53:50,836 INFO  L420      AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 20:53:50,836 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 20:53:50,836 INFO  L85        PathProgramCache]: Analyzing trace with hash -1282554740, now seen corresponding path program 1 times
[2023-12-25 20:53:50,836 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 20:53:50,836 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [80012396]
[2023-12-25 20:53:50,837 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 20:53:50,837 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 20:53:51,089 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 20:53:52,697 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 20:53:52,697 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 20:53:52,697 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [80012396]
[2023-12-25 20:53:52,697 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [80012396] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 20:53:52,697 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 20:53:52,697 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2023-12-25 20:53:52,698 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [90030389]
[2023-12-25 20:53:52,698 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 20:53:52,698 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2023-12-25 20:53:52,698 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 20:53:52,699 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2023-12-25 20:53:52,699 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30
[2023-12-25 20:53:52,699 INFO  L87              Difference]: Start difference. First operand 11064 states and 18438 transitions. Second operand  has 6 states, 6 states have (on average 81.5) internal successors, (489), 5 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 20:53:53,424 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 20:53:53,424 INFO  L93              Difference]: Finished difference Result 31759 states and 52930 transitions.
[2023-12-25 20:53:53,424 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. 
[2023-12-25 20:53:53,425 INFO  L78                 Accepts]: Start accepts. Automaton has  has 6 states, 6 states have (on average 81.5) internal successors, (489), 5 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 20:53:53,425 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 20:53:53,466 INFO  L225             Difference]: With dead ends: 31759
[2023-12-25 20:53:53,466 INFO  L226             Difference]: Without dead ends: 21413
[2023-12-25 20:53:53,487 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90
[2023-12-25 20:53:53,491 INFO  L413           NwaCegarLoop]: 18428 mSDtfsCounter, 69047 mSDsluCounter, 54664 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69047 SdHoareTripleChecker+Valid, 73092 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-12-25 20:53:53,492 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [69047 Valid, 73092 Invalid, 33 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [0 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-12-25 20:53:53,515 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 21413 states.
[2023-12-25 20:53:53,703 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 21413 to 11072.
[2023-12-25 20:53:53,723 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 11072 states, 11071 states have (on average 1.6663354710504923) internal successors, (18448), 11071 states have internal predecessors, (18448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 20:53:53,740 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 11072 states to 11072 states and 18448 transitions.
[2023-12-25 20:53:53,740 INFO  L78                 Accepts]: Start accepts. Automaton has 11072 states and 18448 transitions. Word has length 489
[2023-12-25 20:53:53,741 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 20:53:53,741 INFO  L495      AbstractCegarLoop]: Abstraction has 11072 states and 18448 transitions.
[2023-12-25 20:53:53,741 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 6 states, 6 states have (on average 81.5) internal successors, (489), 5 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 20:53:53,741 INFO  L276                IsEmpty]: Start isEmpty. Operand 11072 states and 18448 transitions.
[2023-12-25 20:53:53,749 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 491
[2023-12-25 20:53:53,749 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 20:53:53,749 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 20:53:53,749 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3
[2023-12-25 20:53:53,749 INFO  L420      AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 20:53:53,750 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 20:53:53,750 INFO  L85        PathProgramCache]: Analyzing trace with hash -1273575828, now seen corresponding path program 1 times
[2023-12-25 20:53:53,750 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 20:53:53,750 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1339150042]
[2023-12-25 20:53:53,750 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 20:53:53,750 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 20:53:54,061 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 20:53:55,924 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 20:53:55,924 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 20:53:55,924 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1339150042]
[2023-12-25 20:53:55,924 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1339150042] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 20:53:55,925 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 20:53:55,925 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2023-12-25 20:53:55,925 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [652532667]
[2023-12-25 20:53:55,925 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 20:53:55,926 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-12-25 20:53:55,926 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 20:53:55,928 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-12-25 20:53:55,929 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-12-25 20:53:55,929 INFO  L87              Difference]: Start difference. First operand 11072 states and 18448 transitions. Second operand  has 7 states, 7 states have (on average 70.0) internal successors, (490), 6 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 20:53:57,826 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 20:53:57,827 INFO  L93              Difference]: Finished difference Result 31775 states and 52946 transitions.
[2023-12-25 20:53:57,828 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. 
[2023-12-25 20:53:57,828 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 70.0) internal successors, (490), 6 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 20:53:57,829 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 20:53:57,858 INFO  L225             Difference]: With dead ends: 31775
[2023-12-25 20:53:57,858 INFO  L226             Difference]: Without dead ends: 21415
[2023-12-25 20:53:57,871 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132
[2023-12-25 20:53:57,872 INFO  L413           NwaCegarLoop]: 18142 mSDtfsCounter, 69645 mSDsluCounter, 71977 mSDsCounter, 0 mSdLazyCounter, 1368 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69645 SdHoareTripleChecker+Valid, 90119 SdHoareTripleChecker+Invalid, 1381 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.3s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 1368 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time
[2023-12-25 20:53:57,872 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [69645 Valid, 90119 Invalid, 1381 Unknown, 0 Unchecked, 0.3s Time], IncrementalHoareTripleChecker [13 Valid, 1368 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time]
[2023-12-25 20:53:57,893 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 21415 states.
[2023-12-25 20:53:58,050 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 21415 to 11074.
[2023-12-25 20:53:58,068 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 11074 states, 11073 states have (on average 1.6655829495168428) internal successors, (18443), 11073 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 20:53:58,085 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 11074 states to 11074 states and 18443 transitions.
[2023-12-25 20:53:58,086 INFO  L78                 Accepts]: Start accepts. Automaton has 11074 states and 18443 transitions. Word has length 490
[2023-12-25 20:53:58,086 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 20:53:58,087 INFO  L495      AbstractCegarLoop]: Abstraction has 11074 states and 18443 transitions.
[2023-12-25 20:53:58,087 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 70.0) internal successors, (490), 6 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 20:53:58,087 INFO  L276                IsEmpty]: Start isEmpty. Operand 11074 states and 18443 transitions.
[2023-12-25 20:53:58,090 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 492
[2023-12-25 20:53:58,090 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 20:53:58,090 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 20:53:58,090 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4
[2023-12-25 20:53:58,090 INFO  L420      AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 20:53:58,091 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 20:53:58,091 INFO  L85        PathProgramCache]: Analyzing trace with hash -245322124, now seen corresponding path program 1 times
[2023-12-25 20:53:58,091 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 20:53:58,091 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [887527387]
[2023-12-25 20:53:58,091 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 20:53:58,091 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 20:53:58,282 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 20:53:58,853 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 20:53:58,853 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 20:53:58,853 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [887527387]
[2023-12-25 20:53:58,854 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [887527387] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 20:53:58,854 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 20:53:58,854 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2023-12-25 20:53:58,854 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1860226580]
[2023-12-25 20:53:58,854 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 20:53:58,855 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-12-25 20:53:58,856 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 20:53:58,856 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-12-25 20:53:58,857 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-12-25 20:53:58,857 INFO  L87              Difference]: Start difference. First operand 11074 states and 18443 transitions. Second operand  has 4 states, 4 states have (on average 122.75) internal successors, (491), 3 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 20:53:59,113 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 20:53:59,113 INFO  L93              Difference]: Finished difference Result 21427 states and 35689 transitions.
[2023-12-25 20:53:59,114 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-12-25 20:53:59,114 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 122.75) internal successors, (491), 3 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 20:53:59,115 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 20:53:59,132 INFO  L225             Difference]: With dead ends: 21427
[2023-12-25 20:53:59,132 INFO  L226             Difference]: Without dead ends: 11066
[2023-12-25 20:53:59,146 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 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 20:53:59,147 INFO  L413           NwaCegarLoop]: 18359 mSDtfsCounter, 34874 mSDsluCounter, 1180 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34874 SdHoareTripleChecker+Valid, 19539 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-12-25 20:53:59,147 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [34874 Valid, 19539 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-12-25 20:53:59,160 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 11066 states.
[2023-12-25 20:53:59,350 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 11066 to 11066.
[2023-12-25 20:53:59,363 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 11066 states, 11065 states have (on average 1.6656122910076818) internal successors, (18430), 11065 states have internal predecessors, (18430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 20:53:59,379 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 11066 states to 11066 states and 18430 transitions.
[2023-12-25 20:53:59,382 INFO  L78                 Accepts]: Start accepts. Automaton has 11066 states and 18430 transitions. Word has length 491
[2023-12-25 20:53:59,383 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 20:53:59,383 INFO  L495      AbstractCegarLoop]: Abstraction has 11066 states and 18430 transitions.
[2023-12-25 20:53:59,384 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 122.75) internal successors, (491), 3 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 20:53:59,384 INFO  L276                IsEmpty]: Start isEmpty. Operand 11066 states and 18430 transitions.
[2023-12-25 20:53:59,694 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 7366
[2023-12-25 20:53:59,695 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 20:53:59,698 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:53:59,699 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5
[2023-12-25 20:53:59,699 INFO  L420      AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 20:53:59,699 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 20:53:59,701 INFO  L85        PathProgramCache]: Analyzing trace with hash 1637051711, now seen corresponding path program 1 times
[2023-12-25 20:53:59,702 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 20:53:59,702 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [120516449]
[2023-12-25 20:53:59,703 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 20:53:59,703 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 20:54:00,623 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 20:54:00,624 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1880178812]
[2023-12-25 20:54:00,625 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 20:54:00,626 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 20:54:00,626 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 20:54:00,628 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 20:54:00,635 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 20:54:10,517 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 20:54:10,763 INFO  L262         TraceCheckSpWp]: Trace formula consists of 36900 conjuncts, 6 conjunts are in the unsatisfiable core
[2023-12-25 20:54:10,921 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 20:54:11,127 INFO  L134       CoverageAnalysis]: Checked inductivity of 130 backedges. 130 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-25 20:54:11,128 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 20:54:11,128 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 20:54:11,128 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [120516449]
[2023-12-25 20:54:11,128 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 20:54:11,128 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1880178812]
[2023-12-25 20:54:11,128 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1880178812] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 20:54:11,128 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 20:54:11,129 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2023-12-25 20:54:11,129 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [380169899]
[2023-12-25 20:54:11,130 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 20:54:11,138 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2023-12-25 20:54:11,138 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 20:54:11,144 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2023-12-25 20:54:11,145 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2023-12-25 20:54:11,148 INFO  L87              Difference]: Start difference. First operand 11066 states and 18430 transitions. Second operand  has 3 states, 3 states have (on average 2455.0) internal successors, (7365), 3 states have internal predecessors, (7365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 20:54:11,356 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 20:54:11,356 INFO  L93              Difference]: Finished difference Result 21421 states and 35680 transitions.
[2023-12-25 20:54:11,356 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2023-12-25 20:54:11,360 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 2455.0) internal successors, (7365), 3 states have internal predecessors, (7365), 0 states have call successors, (0), 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 7365
[2023-12-25 20:54:11,362 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 20:54:11,380 INFO  L225             Difference]: With dead ends: 21421
[2023-12-25 20:54:11,380 INFO  L226             Difference]: Without dead ends: 11071
[2023-12-25 20:54:11,395 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 7364 GetRequests, 7363 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 20:54:11,396 INFO  L413           NwaCegarLoop]: 18115 mSDtfsCounter, 6 mSDsluCounter, 18110 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 36225 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-12-25 20:54:11,397 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 36225 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-12-25 20:54:11,412 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 11071 states.
[2023-12-25 20:54:11,530 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 11071 to 11067.
[2023-12-25 20:54:11,545 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 11067 states, 11066 states have (on average 1.6655521416952828) internal successors, (18431), 11066 states have internal predecessors, (18431), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 20:54:11,563 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 11067 states to 11067 states and 18431 transitions.
[2023-12-25 20:54:11,563 INFO  L78                 Accepts]: Start accepts. Automaton has 11067 states and 18431 transitions. Word has length 7365
[2023-12-25 20:54:11,565 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 20:54:11,566 INFO  L495      AbstractCegarLoop]: Abstraction has 11067 states and 18431 transitions.
[2023-12-25 20:54:11,569 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 2455.0) internal successors, (7365), 3 states have internal predecessors, (7365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 20:54:11,569 INFO  L276                IsEmpty]: Start isEmpty. Operand 11067 states and 18431 transitions.
[2023-12-25 20:54:11,963 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 7366
[2023-12-25 20:54:11,963 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 20:54:11,966 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:54:12,077 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0
[2023-12-25 20:54:12,174 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 20:54:12,175 INFO  L420      AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 20:54:12,175 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 20:54:12,177 INFO  L85        PathProgramCache]: Analyzing trace with hash 174864781, now seen corresponding path program 1 times
[2023-12-25 20:54:12,177 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 20:54:12,177 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [796256959]
[2023-12-25 20:54:12,178 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 20:54:12,178 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 20:54:13,205 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 20:54:13,206 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1066926486]
[2023-12-25 20:54:13,207 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 20:54:13,208 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 20:54:13,208 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 20:54:13,209 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 20:54:13,228 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 20:54:22,641 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 20:54:22,866 INFO  L262         TraceCheckSpWp]: Trace formula consists of 36901 conjuncts, 12 conjunts are in the unsatisfiable core
[2023-12-25 20:54:23,015 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 20:54:25,544 INFO  L134       CoverageAnalysis]: Checked inductivity of 130 backedges. 130 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-25 20:54:25,545 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 20:54:25,545 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 20:54:25,545 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [796256959]
[2023-12-25 20:54:25,545 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 20:54:25,545 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1066926486]
[2023-12-25 20:54:25,545 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1066926486] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 20:54:25,545 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 20:54:25,546 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2023-12-25 20:54:25,547 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1013714674]
[2023-12-25 20:54:25,547 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 20:54:25,554 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-12-25 20:54:25,554 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 20:54:25,560 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-12-25 20:54:25,560 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-12-25 20:54:25,563 INFO  L87              Difference]: Start difference. First operand 11067 states and 18431 transitions. Second operand  has 4 states, 4 states have (on average 1841.25) internal successors, (7365), 3 states have internal predecessors, (7365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 20:54:30,791 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 20:54:30,791 INFO  L93              Difference]: Finished difference Result 21998 states and 36638 transitions.
[2023-12-25 20:54:30,791 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-12-25 20:54:30,794 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 1841.25) internal successors, (7365), 3 states have internal predecessors, (7365), 0 states have call successors, (0), 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 7365
[2023-12-25 20:54:30,795 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 20:54:30,811 INFO  L225             Difference]: With dead ends: 21998
[2023-12-25 20:54:30,811 INFO  L226             Difference]: Without dead ends: 11647
[2023-12-25 20:54:30,821 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 7365 GetRequests, 7362 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 20:54:30,821 INFO  L413           NwaCegarLoop]: 14034 mSDtfsCounter, 34481 mSDsluCounter, 1459 mSDsCounter, 0 mSdLazyCounter, 6040 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34481 SdHoareTripleChecker+Valid, 15493 SdHoareTripleChecker+Invalid, 6040 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6040 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time
[2023-12-25 20:54:30,822 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [34481 Valid, 15493 Invalid, 6040 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 6040 Invalid, 0 Unknown, 0 Unchecked, 5.0s Time]
[2023-12-25 20:54:30,834 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 11647 states.
[2023-12-25 20:54:30,931 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 11647 to 11067.
[2023-12-25 20:54:30,946 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 11067 states, 11066 states have (on average 1.6654617748057112) internal successors, (18430), 11066 states have internal predecessors, (18430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 20:54:31,077 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 11067 states to 11067 states and 18430 transitions.
[2023-12-25 20:54:31,077 INFO  L78                 Accepts]: Start accepts. Automaton has 11067 states and 18430 transitions. Word has length 7365
[2023-12-25 20:54:31,079 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 20:54:31,079 INFO  L495      AbstractCegarLoop]: Abstraction has 11067 states and 18430 transitions.
[2023-12-25 20:54:31,081 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 1841.25) internal successors, (7365), 3 states have internal predecessors, (7365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 20:54:31,081 INFO  L276                IsEmpty]: Start isEmpty. Operand 11067 states and 18430 transitions.
[2023-12-25 20:54:31,479 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 7367
[2023-12-25 20:54:31,479 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 20:54:31,483 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:54:31,579 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 20:54:31,683 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,SelfDestructingSolverStorable7
[2023-12-25 20:54:31,683 INFO  L420      AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 20:54:31,685 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 20:54:31,687 INFO  L85        PathProgramCache]: Analyzing trace with hash 1691660989, now seen corresponding path program 1 times
[2023-12-25 20:54:31,687 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 20:54:31,687 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [810085276]
[2023-12-25 20:54:31,688 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 20:54:31,688 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 20:54:32,321 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 20:54:32,321 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1912953438]
[2023-12-25 20:54:32,323 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 20:54:32,323 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 20:54:32,323 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 20:54:32,325 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 20:54:32,327 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 20:54:41,420 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 20:54:41,641 INFO  L262         TraceCheckSpWp]: Trace formula consists of 36902 conjuncts, 12 conjunts are in the unsatisfiable core
[2023-12-25 20:54:41,888 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 20:54:44,037 INFO  L134       CoverageAnalysis]: Checked inductivity of 130 backedges. 130 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-25 20:54:44,038 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 20:54:44,038 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 20:54:44,038 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [810085276]
[2023-12-25 20:54:44,038 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 20:54:44,038 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1912953438]
[2023-12-25 20:54:44,038 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1912953438] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 20:54:44,038 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 20:54:44,039 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2023-12-25 20:54:44,039 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1593755241]
[2023-12-25 20:54:44,039 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 20:54:44,046 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-12-25 20:54:44,046 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 20:54:44,052 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-12-25 20:54:44,052 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-12-25 20:54:44,055 INFO  L87              Difference]: Start difference. First operand 11067 states and 18430 transitions. Second operand  has 4 states, 4 states have (on average 1841.5) internal successors, (7366), 3 states have internal predecessors, (7366), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 20:54:49,282 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 20:54:49,283 INFO  L93              Difference]: Finished difference Result 22011 states and 36657 transitions.
[2023-12-25 20:54:49,283 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-12-25 20:54:49,285 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 1841.5) internal successors, (7366), 3 states have internal predecessors, (7366), 0 states have call successors, (0), 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 7366
[2023-12-25 20:54:49,286 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 20:54:49,300 INFO  L225             Difference]: With dead ends: 22011
[2023-12-25 20:54:49,300 INFO  L226             Difference]: Without dead ends: 11660
[2023-12-25 20:54:49,307 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 7366 GetRequests, 7363 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 20:54:49,308 INFO  L413           NwaCegarLoop]: 14053 mSDtfsCounter, 34470 mSDsluCounter, 1479 mSDsCounter, 0 mSdLazyCounter, 6042 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34470 SdHoareTripleChecker+Valid, 15532 SdHoareTripleChecker+Invalid, 6042 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6042 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time
[2023-12-25 20:54:49,308 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [34470 Valid, 15532 Invalid, 6042 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 6042 Invalid, 0 Unknown, 0 Unchecked, 5.0s Time]
[2023-12-25 20:54:49,321 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 11660 states.
[2023-12-25 20:54:49,421 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 11660 to 11067.
[2023-12-25 20:54:49,436 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 11067 states, 11066 states have (on average 1.6653714079161395) internal successors, (18429), 11066 states have internal predecessors, (18429), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 20:54:49,453 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 11067 states to 11067 states and 18429 transitions.
[2023-12-25 20:54:49,453 INFO  L78                 Accepts]: Start accepts. Automaton has 11067 states and 18429 transitions. Word has length 7366
[2023-12-25 20:54:49,455 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 20:54:49,455 INFO  L495      AbstractCegarLoop]: Abstraction has 11067 states and 18429 transitions.
[2023-12-25 20:54:49,457 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 1841.5) internal successors, (7366), 3 states have internal predecessors, (7366), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 20:54:49,457 INFO  L276                IsEmpty]: Start isEmpty. Operand 11067 states and 18429 transitions.
[2023-12-25 20:54:49,858 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 7368
[2023-12-25 20:54:49,858 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 20:54:49,862 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:54:49,968 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 20:54:50,076 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 20:54:50,077 INFO  L420      AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 20:54:50,077 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 20:54:50,079 INFO  L85        PathProgramCache]: Analyzing trace with hash -684961840, now seen corresponding path program 1 times
[2023-12-25 20:54:50,079 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 20:54:50,079 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [6537979]
[2023-12-25 20:54:50,080 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 20:54:50,080 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 20:54:50,808 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 20:54:50,808 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1029599041]
[2023-12-25 20:54:50,810 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 20:54:50,810 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 20:54:50,810 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 20:54:50,812 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 20:54:50,814 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 20:54:59,979 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 20:55:00,219 INFO  L262         TraceCheckSpWp]: Trace formula consists of 36903 conjuncts, 12 conjunts are in the unsatisfiable core
[2023-12-25 20:55:00,368 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 20:55:02,424 INFO  L134       CoverageAnalysis]: Checked inductivity of 130 backedges. 130 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-25 20:55:02,425 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 20:55:02,425 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 20:55:02,425 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [6537979]
[2023-12-25 20:55:02,425 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 20:55:02,425 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1029599041]
[2023-12-25 20:55:02,425 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1029599041] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 20:55:02,425 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 20:55:02,426 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2023-12-25 20:55:02,426 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1745519937]
[2023-12-25 20:55:02,426 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 20:55:02,435 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-12-25 20:55:02,436 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 20:55:02,441 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-12-25 20:55:02,441 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-12-25 20:55:02,443 INFO  L87              Difference]: Start difference. First operand 11067 states and 18429 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 20:55:07,536 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 20:55:07,537 INFO  L93              Difference]: Finished difference Result 22027 states and 36681 transitions.
[2023-12-25 20:55:07,537 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-12-25 20:55:07,539 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 20:55:07,539 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 20:55:07,547 INFO  L225             Difference]: With dead ends: 22027
[2023-12-25 20:55:07,548 INFO  L226             Difference]: Without dead ends: 11676
[2023-12-25 20:55:07,552 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 20:55:07,554 INFO  L413           NwaCegarLoop]: 14077 mSDtfsCounter, 34457 mSDsluCounter, 1504 mSDsCounter, 0 mSdLazyCounter, 6044 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34457 SdHoareTripleChecker+Valid, 15581 SdHoareTripleChecker+Invalid, 6044 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6044 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time
[2023-12-25 20:55:07,555 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [34457 Valid, 15581 Invalid, 6044 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 6044 Invalid, 0 Unknown, 0 Unchecked, 4.9s Time]
[2023-12-25 20:55:07,567 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 11676 states.
[2023-12-25 20:55:07,669 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 11676 to 11067.
[2023-12-25 20:55:07,682 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 11067 states, 11066 states have (on average 1.665281041026568) internal successors, (18428), 11066 states have internal predecessors, (18428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 20:55:07,696 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 11067 states to 11067 states and 18428 transitions.
[2023-12-25 20:55:07,696 INFO  L78                 Accepts]: Start accepts. Automaton has 11067 states and 18428 transitions. Word has length 7367
[2023-12-25 20:55:07,697 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 20:55:07,697 INFO  L495      AbstractCegarLoop]: Abstraction has 11067 states and 18428 transitions.
[2023-12-25 20:55:07,699 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 20:55:07,699 INFO  L276                IsEmpty]: Start isEmpty. Operand 11067 states and 18428 transitions.
[2023-12-25 20:55:08,034 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 7369
[2023-12-25 20:55:08,034 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 20:55:08,037 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:55:08,137 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0
[2023-12-25 20:55:08,255 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 20:55:08,255 INFO  L420      AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 20:55:08,256 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 20:55:08,258 INFO  L85        PathProgramCache]: Analyzing trace with hash -1328747974, now seen corresponding path program 1 times
[2023-12-25 20:55:08,258 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 20:55:08,259 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1925511262]
[2023-12-25 20:55:08,259 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 20:55:08,260 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 20:55:08,930 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 20:55:08,930 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1646518500]
[2023-12-25 20:55:08,932 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 20:55:08,932 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 20:55:08,932 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 20:55:08,933 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 20:55:08,935 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 20:55:18,004 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 20:55:18,228 INFO  L262         TraceCheckSpWp]: Trace formula consists of 36904 conjuncts, 12 conjunts are in the unsatisfiable core
[2023-12-25 20:55:18,337 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 20:55:20,268 INFO  L134       CoverageAnalysis]: Checked inductivity of 130 backedges. 130 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-25 20:55:20,269 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 20:55:20,269 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 20:55:20,269 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1925511262]
[2023-12-25 20:55:20,269 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 20:55:20,269 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1646518500]
[2023-12-25 20:55:20,269 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1646518500] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 20:55:20,269 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 20:55:20,270 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2023-12-25 20:55:20,270 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [962670789]
[2023-12-25 20:55:20,270 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 20:55:20,277 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-12-25 20:55:20,277 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 20:55:20,283 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-12-25 20:55:20,283 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-12-25 20:55:20,285 INFO  L87              Difference]: Start difference. First operand 11067 states and 18428 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 20:55:25,419 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 20:55:25,419 INFO  L93              Difference]: Finished difference Result 22034 states and 36690 transitions.
[2023-12-25 20:55:25,420 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-12-25 20:55:25,421 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 20:55:25,422 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 20:55:25,431 INFO  L225             Difference]: With dead ends: 22034
[2023-12-25 20:55:25,431 INFO  L226             Difference]: Without dead ends: 11683
[2023-12-25 20:55:25,436 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 20:55:25,438 INFO  L413           NwaCegarLoop]: 14086 mSDtfsCounter, 34450 mSDsluCounter, 1514 mSDsCounter, 0 mSdLazyCounter, 6046 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34450 SdHoareTripleChecker+Valid, 15600 SdHoareTripleChecker+Invalid, 6046 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6046 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time
[2023-12-25 20:55:25,438 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [34450 Valid, 15600 Invalid, 6046 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6046 Invalid, 0 Unknown, 0 Unchecked, 4.9s Time]
[2023-12-25 20:55:25,448 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 11683 states.
[2023-12-25 20:55:25,543 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 11683 to 11067.
[2023-12-25 20:55:25,555 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 11067 states, 11066 states have (on average 1.6651906741369962) internal successors, (18427), 11066 states have internal predecessors, (18427), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 20:55:25,568 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 11067 states to 11067 states and 18427 transitions.
[2023-12-25 20:55:25,569 INFO  L78                 Accepts]: Start accepts. Automaton has 11067 states and 18427 transitions. Word has length 7368
[2023-12-25 20:55:25,570 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 20:55:25,570 INFO  L495      AbstractCegarLoop]: Abstraction has 11067 states and 18427 transitions.
[2023-12-25 20:55:25,572 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 20:55:25,572 INFO  L276                IsEmpty]: Start isEmpty. Operand 11067 states and 18427 transitions.
[2023-12-25 20:55:25,936 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 7370
[2023-12-25 20:55:25,936 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 20:55:25,939 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:55:26,045 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 20:55:26,164 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,SelfDestructingSolverStorable10
[2023-12-25 20:55:26,164 INFO  L420      AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 20:55:26,165 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 20:55:26,166 INFO  L85        PathProgramCache]: Analyzing trace with hash 1606246111, now seen corresponding path program 1 times
[2023-12-25 20:55:26,167 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 20:55:26,167 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [968474246]
[2023-12-25 20:55:26,167 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 20:55:26,167 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 20:55:26,837 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 20:55:26,837 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [556454709]
[2023-12-25 20:55:26,839 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 20:55:26,839 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 20:55:26,839 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 20:55:26,840 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 20:55:26,843 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 20:55:35,902 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 20:55:36,121 INFO  L262         TraceCheckSpWp]: Trace formula consists of 36905 conjuncts, 12 conjunts are in the unsatisfiable core
[2023-12-25 20:55:36,201 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 20:55:38,161 INFO  L134       CoverageAnalysis]: Checked inductivity of 130 backedges. 130 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-25 20:55:38,161 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 20:55:38,161 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 20:55:38,161 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [968474246]
[2023-12-25 20:55:38,161 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 20:55:38,161 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [556454709]
[2023-12-25 20:55:38,161 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [556454709] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 20:55:38,161 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 20:55:38,162 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2023-12-25 20:55:38,162 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1776406051]
[2023-12-25 20:55:38,162 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 20:55:38,168 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-12-25 20:55:38,169 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 20:55:38,174 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-12-25 20:55:38,174 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-12-25 20:55:38,174 INFO  L87              Difference]: Start difference. First operand 11067 states and 18427 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 20:55:43,255 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 20:55:43,255 INFO  L93              Difference]: Finished difference Result 22038 states and 36694 transitions.
[2023-12-25 20:55:43,255 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-12-25 20:55:43,257 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 20:55:43,258 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 20:55:43,268 INFO  L225             Difference]: With dead ends: 22038
[2023-12-25 20:55:43,268 INFO  L226             Difference]: Without dead ends: 11687
[2023-12-25 20:55:43,278 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 20:55:43,279 INFO  L413           NwaCegarLoop]: 14090 mSDtfsCounter, 34445 mSDsluCounter, 1519 mSDsCounter, 0 mSdLazyCounter, 6048 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34445 SdHoareTripleChecker+Valid, 15609 SdHoareTripleChecker+Invalid, 6048 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6048 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time
[2023-12-25 20:55:43,279 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [34445 Valid, 15609 Invalid, 6048 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 6048 Invalid, 0 Unknown, 0 Unchecked, 4.9s Time]
[2023-12-25 20:55:43,379 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 11687 states.
[2023-12-25 20:55:43,466 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 11687 to 11067.
[2023-12-25 20:55:43,479 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 11067 states, 11066 states have (on average 1.6651003072474246) internal successors, (18426), 11066 states have internal predecessors, (18426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 20:55:43,493 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 11067 states to 11067 states and 18426 transitions.
[2023-12-25 20:55:43,494 INFO  L78                 Accepts]: Start accepts. Automaton has 11067 states and 18426 transitions. Word has length 7369
[2023-12-25 20:55:43,495 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 20:55:43,495 INFO  L495      AbstractCegarLoop]: Abstraction has 11067 states and 18426 transitions.
[2023-12-25 20:55:43,497 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 20:55:43,497 INFO  L276                IsEmpty]: Start isEmpty. Operand 11067 states and 18426 transitions.
[2023-12-25 20:55:43,832 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 7371
[2023-12-25 20:55:43,833 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 20:55:43,836 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:55:43,939 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 20:55:44,056 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 20:55:44,057 INFO  L420      AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 20:55:44,057 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 20:55:44,059 INFO  L85        PathProgramCache]: Analyzing trace with hash -22391729, now seen corresponding path program 1 times
[2023-12-25 20:55:44,059 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 20:55:44,059 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1969902241]
[2023-12-25 20:55:44,060 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 20:55:44,060 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 20:55:44,710 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 20:55:44,710 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [946746127]
[2023-12-25 20:55:44,712 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 20:55:44,712 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 20:55:44,712 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 20:55:44,713 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 20:55:44,716 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 20:55:53,769 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 20:55:53,993 INFO  L262         TraceCheckSpWp]: Trace formula consists of 36906 conjuncts, 12 conjunts are in the unsatisfiable core
[2023-12-25 20:55:54,075 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 20:55:56,184 INFO  L134       CoverageAnalysis]: Checked inductivity of 130 backedges. 130 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-25 20:55:56,184 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 20:55:56,185 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 20:55:56,185 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1969902241]
[2023-12-25 20:55:56,185 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 20:55:56,185 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [946746127]
[2023-12-25 20:55:56,185 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [946746127] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 20:55:56,185 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 20:55:56,185 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2023-12-25 20:55:56,186 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [574470278]
[2023-12-25 20:55:56,186 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 20:55:56,190 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-12-25 20:55:56,191 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 20:55:56,194 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-12-25 20:55:56,195 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-12-25 20:55:56,195 INFO  L87              Difference]: Start difference. First operand 11067 states and 18426 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 20:56:01,205 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 20:56:01,205 INFO  L93              Difference]: Finished difference Result 22063 states and 36733 transitions.
[2023-12-25 20:56:01,206 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-12-25 20:56:01,207 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 20:56:01,208 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 20:56:01,217 INFO  L225             Difference]: With dead ends: 22063
[2023-12-25 20:56:01,217 INFO  L226             Difference]: Without dead ends: 11712
[2023-12-25 20:56:01,227 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 20:56:01,228 INFO  L413           NwaCegarLoop]: 14129 mSDtfsCounter, 34426 mSDsluCounter, 1559 mSDsCounter, 0 mSdLazyCounter, 6050 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34426 SdHoareTripleChecker+Valid, 15688 SdHoareTripleChecker+Invalid, 6050 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6050 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time
[2023-12-25 20:56:01,228 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [34426 Valid, 15688 Invalid, 6050 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6050 Invalid, 0 Unknown, 0 Unchecked, 4.8s Time]
[2023-12-25 20:56:01,241 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 11712 states.
[2023-12-25 20:56:01,341 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 11712 to 11067.
[2023-12-25 20:56:01,352 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 11067 states, 11066 states have (on average 1.6650099403578529) internal successors, (18425), 11066 states have internal predecessors, (18425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 20:56:01,364 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 11067 states to 11067 states and 18425 transitions.
[2023-12-25 20:56:01,364 INFO  L78                 Accepts]: Start accepts. Automaton has 11067 states and 18425 transitions. Word has length 7370
[2023-12-25 20:56:01,365 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 20:56:01,365 INFO  L495      AbstractCegarLoop]: Abstraction has 11067 states and 18425 transitions.
[2023-12-25 20:56:01,367 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 20:56:01,367 INFO  L276                IsEmpty]: Start isEmpty. Operand 11067 states and 18425 transitions.
[2023-12-25 20:56:01,694 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 7372
[2023-12-25 20:56:01,695 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 20:56:01,697 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:56:01,797 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 20:56:01,898 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 20:56:01,898 INFO  L420      AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 20:56:01,899 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 20:56:01,901 INFO  L85        PathProgramCache]: Analyzing trace with hash -1953823606, now seen corresponding path program 1 times
[2023-12-25 20:56:01,901 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 20:56:01,902 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1659798366]
[2023-12-25 20:56:01,902 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 20:56:01,902 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 20:56:02,606 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 20:56:02,606 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1264700363]
[2023-12-25 20:56:02,608 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 20:56:02,608 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 20:56:02,608 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 20:56:02,609 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 20:56:02,612 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 20:56:12,958 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 20:56:13,196 INFO  L262         TraceCheckSpWp]: Trace formula consists of 36907 conjuncts, 12 conjunts are in the unsatisfiable core
[2023-12-25 20:56:13,287 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 20:56:15,305 INFO  L134       CoverageAnalysis]: Checked inductivity of 130 backedges. 130 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-25 20:56:15,305 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 20:56:15,305 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 20:56:15,305 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1659798366]
[2023-12-25 20:56:15,305 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 20:56:15,305 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1264700363]
[2023-12-25 20:56:15,306 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1264700363] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 20:56:15,306 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 20:56:15,306 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2023-12-25 20:56:15,306 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1082008804]
[2023-12-25 20:56:15,306 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 20:56:15,312 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-12-25 20:56:15,312 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 20:56:15,317 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-12-25 20:56:15,317 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-12-25 20:56:15,319 INFO  L87              Difference]: Start difference. First operand 11067 states and 18425 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 20:56:20,408 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 20:56:20,408 INFO  L93              Difference]: Finished difference Result 22082 states and 36762 transitions.
[2023-12-25 20:56:20,408 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-12-25 20:56:20,410 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 20:56:20,410 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 20:56:20,422 INFO  L225             Difference]: With dead ends: 22082
[2023-12-25 20:56:20,422 INFO  L226             Difference]: Without dead ends: 11731
[2023-12-25 20:56:20,431 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 20:56:20,431 INFO  L413           NwaCegarLoop]: 14158 mSDtfsCounter, 34411 mSDsluCounter, 1589 mSDsCounter, 0 mSdLazyCounter, 6052 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34411 SdHoareTripleChecker+Valid, 15747 SdHoareTripleChecker+Invalid, 6052 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6052 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time
[2023-12-25 20:56:20,432 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [34411 Valid, 15747 Invalid, 6052 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 6052 Invalid, 0 Unknown, 0 Unchecked, 4.9s Time]
[2023-12-25 20:56:20,441 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 11731 states.
[2023-12-25 20:56:20,510 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 11731 to 11067.
[2023-12-25 20:56:20,522 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 11067 states, 11066 states have (on average 1.6649195734682811) internal successors, (18424), 11066 states have internal predecessors, (18424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 20:56:20,534 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 11067 states to 11067 states and 18424 transitions.
[2023-12-25 20:56:20,535 INFO  L78                 Accepts]: Start accepts. Automaton has 11067 states and 18424 transitions. Word has length 7371
[2023-12-25 20:56:20,536 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 20:56:20,536 INFO  L495      AbstractCegarLoop]: Abstraction has 11067 states and 18424 transitions.
[2023-12-25 20:56:20,537 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 20:56:20,537 INFO  L276                IsEmpty]: Start isEmpty. Operand 11067 states and 18424 transitions.
[2023-12-25 20:56:20,911 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 7373
[2023-12-25 20:56:20,912 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 20:56:20,915 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:56:21,045 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 20:56:21,134 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,SelfDestructingSolverStorable13
[2023-12-25 20:56:21,135 INFO  L420      AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 20:56:21,136 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 20:56:21,137 INFO  L85        PathProgramCache]: Analyzing trace with hash 2101407014, now seen corresponding path program 1 times
[2023-12-25 20:56:21,137 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 20:56:21,138 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2095679925]
[2023-12-25 20:56:21,138 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 20:56:21,138 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 20:56:21,814 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 20:56:21,814 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [72010301]
[2023-12-25 20:56:21,815 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 20:56:21,815 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 20:56:21,816 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 20:56:21,816 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 20:56:21,817 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 20:56:30,882 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 20:56:31,108 INFO  L262         TraceCheckSpWp]: Trace formula consists of 36908 conjuncts, 12 conjunts are in the unsatisfiable core
[2023-12-25 20:56:31,190 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 20:56:33,159 INFO  L134       CoverageAnalysis]: Checked inductivity of 130 backedges. 130 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-25 20:56:33,159 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 20:56:33,159 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 20:56:33,159 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2095679925]
[2023-12-25 20:56:33,159 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 20:56:33,159 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [72010301]
[2023-12-25 20:56:33,159 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [72010301] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 20:56:33,159 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 20:56:33,160 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2023-12-25 20:56:33,160 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1636675820]
[2023-12-25 20:56:33,161 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 20:56:33,165 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-12-25 20:56:33,165 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 20:56:33,170 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-12-25 20:56:33,170 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-12-25 20:56:33,171 INFO  L87              Difference]: Start difference. First operand 11067 states and 18424 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 20:56:38,305 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 20:56:38,305 INFO  L93              Difference]: Finished difference Result 22095 states and 36781 transitions.
[2023-12-25 20:56:38,305 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-12-25 20:56:38,307 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 20:56:38,307 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 20:56:38,316 INFO  L225             Difference]: With dead ends: 22095
[2023-12-25 20:56:38,316 INFO  L226             Difference]: Without dead ends: 11744
[2023-12-25 20:56:38,324 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 20:56:38,325 INFO  L413           NwaCegarLoop]: 14177 mSDtfsCounter, 34400 mSDsluCounter, 1609 mSDsCounter, 0 mSdLazyCounter, 6054 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34400 SdHoareTripleChecker+Valid, 15786 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 20:56:38,325 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [34400 Valid, 15786 Invalid, 6054 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 6054 Invalid, 0 Unknown, 0 Unchecked, 4.9s Time]
[2023-12-25 20:56:38,334 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 11744 states.
[2023-12-25 20:56:38,404 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 11744 to 11067.
[2023-12-25 20:56:38,413 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 11067 states, 11066 states have (on average 1.6648292065787096) internal successors, (18423), 11066 states have internal predecessors, (18423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 20:56:38,423 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 11067 states to 11067 states and 18423 transitions.
[2023-12-25 20:56:38,423 INFO  L78                 Accepts]: Start accepts. Automaton has 11067 states and 18423 transitions. Word has length 7372
[2023-12-25 20:56:38,424 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 20:56:38,424 INFO  L495      AbstractCegarLoop]: Abstraction has 11067 states and 18423 transitions.
[2023-12-25 20:56:38,425 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 20:56:38,425 INFO  L276                IsEmpty]: Start isEmpty. Operand 11067 states and 18423 transitions.
[2023-12-25 20:56:38,809 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 7374
[2023-12-25 20:56:38,809 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 20:56:38,811 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:56:38,908 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 20:56:39,012 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,SelfDestructingSolverStorable14
[2023-12-25 20:56:39,012 INFO  L420      AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 20:56:39,014 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 20:56:39,016 INFO  L85        PathProgramCache]: Analyzing trace with hash 987452365, now seen corresponding path program 1 times
[2023-12-25 20:56:39,016 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 20:56:39,016 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [736150027]
[2023-12-25 20:56:39,016 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 20:56:39,017 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 20:56:39,593 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 20:56:39,594 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [503494399]
[2023-12-25 20:56:39,595 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 20:56:39,596 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 20:56:39,596 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 20:56:39,597 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 20:56:39,598 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 20:56:48,675 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 20:56:48,899 INFO  L262         TraceCheckSpWp]: Trace formula consists of 36909 conjuncts, 7 conjunts are in the unsatisfiable core
[2023-12-25 20:56:49,081 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 20:57:10,920 INFO  L134       CoverageAnalysis]: Checked inductivity of 130 backedges. 130 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-25 20:57:10,921 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 20:57:10,921 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 20:57:10,921 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [736150027]
[2023-12-25 20:57:10,921 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 20:57:10,921 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [503494399]
[2023-12-25 20:57:10,921 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [503494399] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 20:57:10,921 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 20:57:10,922 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2023-12-25 20:57:10,922 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1352374061]
[2023-12-25 20:57:10,922 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 20:57:10,928 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-12-25 20:57:10,928 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 20:57:10,933 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-12-25 20:57:10,933 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2023-12-25 20:57:10,935 INFO  L87              Difference]: Start difference. First operand 11067 states and 18423 transitions. Second operand  has 5 states, 5 states have (on average 1474.6) internal successors, (7373), 5 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 20:57:23,299 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 20:57:23,299 INFO  L93              Difference]: Finished difference Result 31581 states and 52581 transitions.
[2023-12-25 20:57:23,300 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2023-12-25 20:57:23,301 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 1474.6) internal successors, (7373), 5 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 20:57:23,306 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 20:57:23,322 INFO  L225             Difference]: With dead ends: 31581
[2023-12-25 20:57:23,322 INFO  L226             Difference]: Without dead ends: 21230
[2023-12-25 20:57:23,332 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 7374 GetRequests, 7369 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 20:57:23,333 INFO  L413           NwaCegarLoop]: 13720 mSDtfsCounter, 10170 mSDsluCounter, 40208 mSDsCounter, 0 mSdLazyCounter, 18524 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10170 SdHoareTripleChecker+Valid, 53928 SdHoareTripleChecker+Invalid, 18524 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 18524 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.9s IncrementalHoareTripleChecker+Time
[2023-12-25 20:57:23,333 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [10170 Valid, 53928 Invalid, 18524 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [0 Valid, 18524 Invalid, 0 Unknown, 0 Unchecked, 11.9s Time]
[2023-12-25 20:57:23,353 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 21230 states.
[2023-12-25 20:57:23,533 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 21230 to 21220.
[2023-12-25 20:57:23,551 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 21220 states, 21219 states have (on average 1.6650643291389793) internal successors, (35331), 21219 states have internal predecessors, (35331), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 20:57:23,572 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 21220 states to 21220 states and 35331 transitions.
[2023-12-25 20:57:23,572 INFO  L78                 Accepts]: Start accepts. Automaton has 21220 states and 35331 transitions. Word has length 7373
[2023-12-25 20:57:23,578 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 20:57:23,578 INFO  L495      AbstractCegarLoop]: Abstraction has 21220 states and 35331 transitions.
[2023-12-25 20:57:23,579 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 1474.6) internal successors, (7373), 5 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 20:57:23,579 INFO  L276                IsEmpty]: Start isEmpty. Operand 21220 states and 35331 transitions.
[2023-12-25 20:57:23,918 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 7375
[2023-12-25 20:57:23,918 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 20:57:23,920 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:57:24,014 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0
[2023-12-25 20:57:24,120 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,SelfDestructingSolverStorable15
[2023-12-25 20:57:24,120 INFO  L420      AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 20:57:24,122 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 20:57:24,123 INFO  L85        PathProgramCache]: Analyzing trace with hash 82307911, now seen corresponding path program 1 times
[2023-12-25 20:57:24,123 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 20:57:24,123 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1909670299]
[2023-12-25 20:57:24,123 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 20:57:24,124 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 20:57:24,945 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 20:57:24,945 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [170500195]
[2023-12-25 20:57:24,947 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 20:57:24,948 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 20:57:24,948 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 20:57:24,949 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 20:57:24,952 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 20:57:33,802 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 20:57:34,023 INFO  L262         TraceCheckSpWp]: Trace formula consists of 36912 conjuncts, 15 conjunts are in the unsatisfiable core
[2023-12-25 20:57:34,117 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 20:57:34,700 INFO  L134       CoverageAnalysis]: Checked inductivity of 130 backedges. 4 proven. 126 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-25 20:57:34,700 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-12-25 20:57:34,794 INFO  L134       CoverageAnalysis]: Checked inductivity of 130 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked.
[2023-12-25 20:57:34,795 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 20:57:34,795 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1909670299]
[2023-12-25 20:57:34,795 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 20:57:34,795 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [170500195]
[2023-12-25 20:57:34,795 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [170500195] provided 1 perfect and 1 imperfect interpolant sequences
[2023-12-25 20:57:34,795 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2023-12-25 20:57:34,797 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [8] total 10
[2023-12-25 20:57:34,797 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [422510806]
[2023-12-25 20:57:34,797 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 20:57:34,802 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-12-25 20:57:34,802 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 20:57:34,806 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-12-25 20:57:34,806 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90
[2023-12-25 20:57:34,808 INFO  L87              Difference]: Start difference. First operand 21220 states and 35331 transitions. Second operand  has 4 states, 4 states have (on average 1813.0) internal successors, (7252), 4 states have internal predecessors, (7252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 20:57:35,251 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 20:57:35,251 INFO  L93              Difference]: Finished difference Result 41910 states and 69781 transitions.
[2023-12-25 20:57:35,252 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-12-25 20:57:35,253 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 1813.0) internal successors, (7252), 4 states have internal predecessors, (7252), 0 states have call successors, (0), 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 20:57:35,257 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 20:57:35,277 INFO  L225             Difference]: With dead ends: 41910
[2023-12-25 20:57:35,277 INFO  L226             Difference]: Without dead ends: 21406
[2023-12-25 20:57:35,292 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 14746 GetRequests, 14738 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90
[2023-12-25 20:57:35,293 INFO  L413           NwaCegarLoop]: 35316 mSDtfsCounter, 17209 mSDsluCounter, 53409 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17209 SdHoareTripleChecker+Valid, 88725 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-12-25 20:57:35,293 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [17209 Valid, 88725 Invalid, 21 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [0 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-12-25 20:57:35,309 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 21406 states.
[2023-12-25 20:57:35,469 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 21406 to 21212.
[2023-12-25 20:57:35,488 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 21212 states, 21211 states have (on average 1.6650794399132525) internal successors, (35318), 21211 states have internal predecessors, (35318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 20:57:35,509 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 21212 states to 21212 states and 35318 transitions.
[2023-12-25 20:57:35,509 INFO  L78                 Accepts]: Start accepts. Automaton has 21212 states and 35318 transitions. Word has length 7374
[2023-12-25 20:57:35,513 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 20:57:35,513 INFO  L495      AbstractCegarLoop]: Abstraction has 21212 states and 35318 transitions.
[2023-12-25 20:57:35,514 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 1813.0) internal successors, (7252), 4 states have internal predecessors, (7252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 20:57:35,514 INFO  L276                IsEmpty]: Start isEmpty. Operand 21212 states and 35318 transitions.
[2023-12-25 20:57:35,823 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 7376
[2023-12-25 20:57:35,823 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 20:57:35,825 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:57:35,938 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 20:57:36,026 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,SelfDestructingSolverStorable16
[2023-12-25 20:57:36,026 INFO  L420      AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 20:57:36,027 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 20:57:36,028 INFO  L85        PathProgramCache]: Analyzing trace with hash -143512391, now seen corresponding path program 1 times
[2023-12-25 20:57:36,028 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 20:57:36,028 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [336155288]
[2023-12-25 20:57:36,029 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 20:57:36,029 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 20:57:36,713 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 20:57:36,714 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [651081018]
[2023-12-25 20:57:36,715 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 20:57:36,716 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 20:57:36,716 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 20:57:36,717 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 20:57:36,735 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 20:57:46,389 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 20:57:46,634 INFO  L262         TraceCheckSpWp]: Trace formula consists of 36915 conjuncts, 29 conjunts are in the unsatisfiable core
[2023-12-25 20:57:46,726 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 20:58:05,531 INFO  L134       CoverageAnalysis]: Checked inductivity of 131 backedges. 131 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-25 20:58:05,531 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 20:58:05,531 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 20:58:05,531 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [336155288]
[2023-12-25 20:58:05,532 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 20:58:05,532 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [651081018]
[2023-12-25 20:58:05,532 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [651081018] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 20:58:05,532 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 20:58:05,533 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2023-12-25 20:58:05,533 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [147483785]
[2023-12-25 20:58:05,533 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 20:58:05,537 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-12-25 20:58:05,537 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 20:58:05,541 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-12-25 20:58:05,542 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42
[2023-12-25 20:58:05,543 INFO  L87              Difference]: Start difference. First operand 21212 states and 35318 transitions. Second operand  has 7 states, 7 states have (on average 1053.5714285714287) internal successors, (7375), 6 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 20:58:16,539 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 20:58:16,540 INFO  L93              Difference]: Finished difference Result 51983 states and 86536 transitions.
[2023-12-25 20:58:16,540 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2023-12-25 20:58:16,541 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 1053.5714285714287) internal successors, (7375), 6 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 20:58:16,545 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 20:58:16,567 INFO  L225             Difference]: With dead ends: 51983
[2023-12-25 20:58:16,567 INFO  L226             Difference]: Without dead ends: 31487
[2023-12-25 20:58:16,579 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 7377 GetRequests, 7369 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90
[2023-12-25 20:58:16,580 INFO  L413           NwaCegarLoop]: 13620 mSDtfsCounter, 69156 mSDsluCounter, 44595 mSDsCounter, 0 mSdLazyCounter, 14704 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69156 SdHoareTripleChecker+Valid, 58215 SdHoareTripleChecker+Invalid, 14763 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 14704 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.4s IncrementalHoareTripleChecker+Time
[2023-12-25 20:58:16,580 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [69156 Valid, 58215 Invalid, 14763 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [59 Valid, 14704 Invalid, 0 Unknown, 0 Unchecked, 10.4s Time]
[2023-12-25 20:58:16,597 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 31487 states.
[2023-12-25 20:58:16,797 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 31487 to 27037.
[2023-12-25 20:58:16,819 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 27037 states, 27036 states have (on average 1.6649282438230508) internal successors, (45013), 27036 states have internal predecessors, (45013), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 20:58:16,848 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 27037 states to 27037 states and 45013 transitions.
[2023-12-25 20:58:16,848 INFO  L78                 Accepts]: Start accepts. Automaton has 27037 states and 45013 transitions. Word has length 7375
[2023-12-25 20:58:16,850 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 20:58:16,850 INFO  L495      AbstractCegarLoop]: Abstraction has 27037 states and 45013 transitions.
[2023-12-25 20:58:16,852 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 1053.5714285714287) internal successors, (7375), 6 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 20:58:16,852 INFO  L276                IsEmpty]: Start isEmpty. Operand 27037 states and 45013 transitions.
[2023-12-25 20:58:17,108 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 7377
[2023-12-25 20:58:17,109 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 20:58:17,110 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:58:17,247 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 20:58:17,311 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,SelfDestructingSolverStorable17
[2023-12-25 20:58:17,311 INFO  L420      AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 20:58:17,311 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 20:58:17,313 INFO  L85        PathProgramCache]: Analyzing trace with hash 1778744179, now seen corresponding path program 1 times
[2023-12-25 20:58:17,313 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 20:58:17,313 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [698355403]
[2023-12-25 20:58:17,313 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 20:58:17,313 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 20:58:18,017 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 20:58:18,017 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1548054968]
[2023-12-25 20:58:18,019 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 20:58:18,020 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 20:58:18,020 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 20:58:18,021 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 20:58:18,023 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 20:58:27,088 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 20:58:27,307 INFO  L262         TraceCheckSpWp]: Trace formula consists of 36918 conjuncts, 11 conjunts are in the unsatisfiable core
[2023-12-25 20:58:27,382 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 20:58:33,080 INFO  L134       CoverageAnalysis]: Checked inductivity of 131 backedges. 131 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-25 20:58:33,080 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 20:58:33,080 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 20:58:33,080 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [698355403]
[2023-12-25 20:58:33,080 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 20:58:33,080 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1548054968]
[2023-12-25 20:58:33,080 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1548054968] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 20:58:33,081 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 20:58:33,081 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2023-12-25 20:58:33,082 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [703502322]
[2023-12-25 20:58:33,082 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 20:58:33,086 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2023-12-25 20:58:33,086 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 20:58:33,090 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2023-12-25 20:58:33,091 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30
[2023-12-25 20:58:33,092 INFO  L87              Difference]: Start difference. First operand 27037 states and 45013 transitions. Second operand  has 6 states, 6 states have (on average 1229.3333333333333) internal successors, (7376), 6 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 20:58:45,538 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 20:58:45,538 INFO  L93              Difference]: Finished difference Result 59866 states and 99694 transitions.
[2023-12-25 20:58:45,538 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. 
[2023-12-25 20:58:45,540 INFO  L78                 Accepts]: Start accepts. Automaton has  has 6 states, 6 states have (on average 1229.3333333333333) internal successors, (7376), 6 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 20:58:45,543 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 20:58:45,570 INFO  L225             Difference]: With dead ends: 59866
[2023-12-25 20:58:45,570 INFO  L226             Difference]: Without dead ends: 38141
[2023-12-25 20:58:45,577 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 7377 GetRequests, 7371 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56
[2023-12-25 20:58:45,577 INFO  L413           NwaCegarLoop]: 19248 mSDtfsCounter, 24725 mSDsluCounter, 51711 mSDsCounter, 0 mSdLazyCounter, 23102 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24725 SdHoareTripleChecker+Valid, 70959 SdHoareTripleChecker+Invalid, 23104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 23102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.8s IncrementalHoareTripleChecker+Time
[2023-12-25 20:58:45,577 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [24725 Valid, 70959 Invalid, 23104 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [2 Valid, 23102 Invalid, 0 Unknown, 0 Unchecked, 11.8s Time]
[2023-12-25 20:58:45,608 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 38141 states.
[2023-12-25 20:58:45,846 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 38141 to 29495.
[2023-12-25 20:58:45,874 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 29495 states, 29494 states have (on average 1.6649488031464026) internal successors, (49106), 29494 states have internal predecessors, (49106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 20:58:45,907 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 29495 states to 29495 states and 49106 transitions.
[2023-12-25 20:58:45,907 INFO  L78                 Accepts]: Start accepts. Automaton has 29495 states and 49106 transitions. Word has length 7376
[2023-12-25 20:58:45,909 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 20:58:45,909 INFO  L495      AbstractCegarLoop]: Abstraction has 29495 states and 49106 transitions.
[2023-12-25 20:58:45,910 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 6 states, 6 states have (on average 1229.3333333333333) internal successors, (7376), 6 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 20:58:45,910 INFO  L276                IsEmpty]: Start isEmpty. Operand 29495 states and 49106 transitions.
[2023-12-25 20:58:46,287 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 7378
[2023-12-25 20:58:46,287 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 20:58:46,289 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:58:46,407 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0
[2023-12-25 20:58:46,506 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 20:58:46,506 INFO  L420      AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 20:58:46,506 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 20:58:46,508 INFO  L85        PathProgramCache]: Analyzing trace with hash 1330081821, now seen corresponding path program 1 times
[2023-12-25 20:58:46,509 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 20:58:46,509 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1361977924]
[2023-12-25 20:58:46,510 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 20:58:46,510 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 20:58:47,273 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 20:58:47,273 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1593904455]
[2023-12-25 20:58:47,275 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 20:58:47,275 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 20:58:47,275 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 20:58:47,277 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 20:58:47,281 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 20:58:56,328 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 20:58:56,550 INFO  L262         TraceCheckSpWp]: Trace formula consists of 36921 conjuncts, 12 conjunts are in the unsatisfiable core
[2023-12-25 20:58:56,699 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 20:59:04,136 INFO  L134       CoverageAnalysis]: Checked inductivity of 131 backedges. 131 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-25 20:59:04,136 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 20:59:04,136 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 20:59:04,136 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1361977924]
[2023-12-25 20:59:04,136 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 20:59:04,136 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1593904455]
[2023-12-25 20:59:04,137 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1593904455] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 20:59:04,137 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 20:59:04,137 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-12-25 20:59:04,138 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [300294731]
[2023-12-25 20:59:04,138 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 20:59:04,142 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-12-25 20:59:04,142 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 20:59:04,146 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-12-25 20:59:04,146 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42
[2023-12-25 20:59:04,147 INFO  L87              Difference]: Start difference. First operand 29495 states and 49106 transitions. Second operand  has 7 states, 7 states have (on average 1053.857142857143) internal successors, (7377), 7 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 20:59:17,530 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 20:59:17,530 INFO  L93              Difference]: Finished difference Result 64784 states and 107885 transitions.
[2023-12-25 20:59:17,531 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. 
[2023-12-25 20:59:17,532 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 1053.857142857143) internal successors, (7377), 7 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 20:59:17,535 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 20:59:17,569 INFO  L225             Difference]: With dead ends: 64784
[2023-12-25 20:59:17,570 INFO  L226             Difference]: Without dead ends: 41830
[2023-12-25 20:59:17,591 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 7378 GetRequests, 7371 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72
[2023-12-25 20:59:17,592 INFO  L413           NwaCegarLoop]: 18389 mSDtfsCounter, 22990 mSDsluCounter, 57446 mSDsCounter, 0 mSdLazyCounter, 23718 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22990 SdHoareTripleChecker+Valid, 75835 SdHoareTripleChecker+Invalid, 23722 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 23718 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.8s IncrementalHoareTripleChecker+Time
[2023-12-25 20:59:17,592 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [22990 Valid, 75835 Invalid, 23722 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [4 Valid, 23718 Invalid, 0 Unknown, 0 Unchecked, 12.8s Time]
[2023-12-25 20:59:17,625 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 41830 states.
[2023-12-25 20:59:17,982 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 41830 to 33461.
[2023-12-25 20:59:18,010 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 33461 states, 33460 states have (on average 1.6649133293484757) internal successors, (55708), 33460 states have internal predecessors, (55708), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 20:59:18,048 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 33461 states to 33461 states and 55708 transitions.
[2023-12-25 20:59:18,048 INFO  L78                 Accepts]: Start accepts. Automaton has 33461 states and 55708 transitions. Word has length 7377
[2023-12-25 20:59:18,050 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 20:59:18,050 INFO  L495      AbstractCegarLoop]: Abstraction has 33461 states and 55708 transitions.
[2023-12-25 20:59:18,052 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 1053.857142857143) internal successors, (7377), 7 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 20:59:18,052 INFO  L276                IsEmpty]: Start isEmpty. Operand 33461 states and 55708 transitions.
[2023-12-25 20:59:18,456 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 7378
[2023-12-25 20:59:18,457 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 20:59:18,459 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:59:18,560 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 20:59:18,670 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 20:59:18,671 INFO  L420      AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 20:59:18,671 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 20:59:18,673 INFO  L85        PathProgramCache]: Analyzing trace with hash 653768607, now seen corresponding path program 1 times
[2023-12-25 20:59:18,673 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 20:59:18,673 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1073682297]
[2023-12-25 20:59:18,674 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 20:59:18,674 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 20:59:19,217 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 20:59:19,217 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1078416459]
[2023-12-25 20:59:19,219 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 20:59:19,219 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 20:59:19,219 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 20:59:19,224 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 20:59:19,225 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 20:59:28,468 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 20:59:28,736 INFO  L262         TraceCheckSpWp]: Trace formula consists of 36922 conjuncts, 13 conjunts are in the unsatisfiable core
[2023-12-25 20:59:28,835 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 20:59:34,580 INFO  L134       CoverageAnalysis]: Checked inductivity of 131 backedges. 131 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-25 20:59:34,580 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 20:59:34,580 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 20:59:34,580 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1073682297]
[2023-12-25 20:59:34,581 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 20:59:34,581 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1078416459]
[2023-12-25 20:59:34,581 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1078416459] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 20:59:34,581 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 20:59:34,582 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2023-12-25 20:59:34,582 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1908103340]
[2023-12-25 20:59:34,582 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 20:59:34,587 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2023-12-25 20:59:34,587 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 20:59:34,591 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2023-12-25 20:59:34,591 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30
[2023-12-25 20:59:34,593 INFO  L87              Difference]: Start difference. First operand 33461 states and 55708 transitions. Second operand  has 6 states, 6 states have (on average 1229.5) internal successors, (7377), 6 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 20:59:47,101 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 20:59:47,101 INFO  L93              Difference]: Finished difference Result 69027 states and 114942 transitions.
[2023-12-25 20:59:47,101 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. 
[2023-12-25 20:59:47,103 INFO  L78                 Accepts]: Start accepts. Automaton has  has 6 states, 6 states have (on average 1229.5) internal successors, (7377), 6 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 20:59:47,106 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 20:59:47,142 INFO  L225             Difference]: With dead ends: 69027
[2023-12-25 20:59:47,142 INFO  L226             Difference]: Without dead ends: 42107
[2023-12-25 20:59:47,164 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 7378 GetRequests, 7372 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56
[2023-12-25 20:59:47,165 INFO  L413           NwaCegarLoop]: 18390 mSDtfsCounter, 20941 mSDsluCounter, 49995 mSDsCounter, 0 mSdLazyCounter, 21914 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20941 SdHoareTripleChecker+Valid, 68385 SdHoareTripleChecker+Invalid, 21916 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 21914 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.0s IncrementalHoareTripleChecker+Time
[2023-12-25 20:59:47,166 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [20941 Valid, 68385 Invalid, 21916 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [2 Valid, 21914 Invalid, 0 Unknown, 0 Unchecked, 12.0s Time]
[2023-12-25 20:59:47,192 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 42107 states.
[2023-12-25 20:59:47,444 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 42107 to 33461.
[2023-12-25 20:59:47,474 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 33461 states, 33460 states have (on average 1.6649133293484757) internal successors, (55708), 33460 states have internal predecessors, (55708), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 20:59:47,511 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 33461 states to 33461 states and 55708 transitions.
[2023-12-25 20:59:47,511 INFO  L78                 Accepts]: Start accepts. Automaton has 33461 states and 55708 transitions. Word has length 7377
[2023-12-25 20:59:47,514 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 20:59:47,514 INFO  L495      AbstractCegarLoop]: Abstraction has 33461 states and 55708 transitions.
[2023-12-25 20:59:47,515 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 6 states, 6 states have (on average 1229.5) internal successors, (7377), 6 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 20:59:47,516 INFO  L276                IsEmpty]: Start isEmpty. Operand 33461 states and 55708 transitions.
[2023-12-25 20:59:47,945 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 7378
[2023-12-25 20:59:47,946 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 20:59:47,947 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:59:48,068 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0
[2023-12-25 20:59:48,148 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 20:59:48,148 INFO  L420      AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 20:59:48,149 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 20:59:48,149 INFO  L85        PathProgramCache]: Analyzing trace with hash 1295989469, now seen corresponding path program 1 times
[2023-12-25 20:59:48,149 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 20:59:48,150 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1960155094]
[2023-12-25 20:59:48,150 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 20:59:48,151 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 20:59:48,913 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 20:59:48,913 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1164442408]
[2023-12-25 20:59:48,914 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 20:59:48,915 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 20:59:48,915 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 20:59:48,916 INFO  L229       MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-25 20:59:48,918 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process
[2023-12-25 20:59:58,801 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 20:59:59,032 INFO  L262         TraceCheckSpWp]: Trace formula consists of 36923 conjuncts, 9 conjunts are in the unsatisfiable core
[2023-12-25 20:59:59,117 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 21:00:04,602 INFO  L134       CoverageAnalysis]: Checked inductivity of 131 backedges. 131 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-25 21:00:04,603 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 21:00:04,603 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 21:00:04,603 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1960155094]
[2023-12-25 21:00:04,603 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 21:00:04,603 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1164442408]
[2023-12-25 21:00:04,603 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1164442408] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 21:00:04,603 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 21:00:04,604 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2023-12-25 21:00:04,604 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1127950292]
[2023-12-25 21:00:04,604 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 21:00:04,609 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2023-12-25 21:00:04,609 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 21:00:04,614 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2023-12-25 21:00:04,614 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30
[2023-12-25 21:00:04,615 INFO  L87              Difference]: Start difference. First operand 33461 states and 55708 transitions. Second operand  has 6 states, 6 states have (on average 1229.5) internal successors, (7377), 6 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 21:00:15,755 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 21:00:15,757 INFO  L93              Difference]: Finished difference Result 69027 states and 114942 transitions.
[2023-12-25 21:00:15,757 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. 
[2023-12-25 21:00:15,759 INFO  L78                 Accepts]: Start accepts. Automaton has  has 6 states, 6 states have (on average 1229.5) internal successors, (7377), 6 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 21:00:15,762 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 21:00:15,798 INFO  L225             Difference]: With dead ends: 69027
[2023-12-25 21:00:15,798 INFO  L226             Difference]: Without dead ends: 42107
[2023-12-25 21:00:15,820 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 7378 GetRequests, 7372 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56
[2023-12-25 21:00:15,820 INFO  L413           NwaCegarLoop]: 13246 mSDtfsCounter, 20946 mSDsluCounter, 39718 mSDsCounter, 0 mSdLazyCounter, 19467 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20946 SdHoareTripleChecker+Valid, 52964 SdHoareTripleChecker+Invalid, 19468 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19467 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.7s IncrementalHoareTripleChecker+Time
[2023-12-25 21:00:15,821 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [20946 Valid, 52964 Invalid, 19468 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 19467 Invalid, 0 Unknown, 0 Unchecked, 10.7s Time]
[2023-12-25 21:00:15,851 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 42107 states.
[2023-12-25 21:00:16,143 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 42107 to 34965.
[2023-12-25 21:00:16,174 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 34965 states, 34964 states have (on average 1.6649124814094498) internal successors, (58212), 34964 states have internal predecessors, (58212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 21:00:16,404 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 34965 states to 34965 states and 58212 transitions.
[2023-12-25 21:00:16,404 INFO  L78                 Accepts]: Start accepts. Automaton has 34965 states and 58212 transitions. Word has length 7377
[2023-12-25 21:00:16,409 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 21:00:16,409 INFO  L495      AbstractCegarLoop]: Abstraction has 34965 states and 58212 transitions.
[2023-12-25 21:00:16,410 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 6 states, 6 states have (on average 1229.5) internal successors, (7377), 6 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 21:00:16,411 INFO  L276                IsEmpty]: Start isEmpty. Operand 34965 states and 58212 transitions.
[2023-12-25 21:00:16,809 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 7379
[2023-12-25 21:00:16,809 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 21:00:16,811 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:00:16,924 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0
[2023-12-25 21:00:17,011 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21
[2023-12-25 21:00:17,012 INFO  L420      AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 21:00:17,013 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 21:00:17,013 INFO  L85        PathProgramCache]: Analyzing trace with hash 205014349, now seen corresponding path program 1 times
[2023-12-25 21:00:17,013 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 21:00:17,013 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1445677871]
[2023-12-25 21:00:17,014 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 21:00:17,014 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 21:00:17,725 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 21:00:17,726 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [672554738]
[2023-12-25 21:00:17,728 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 21:00:17,728 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 21:00:17,728 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 21:00:17,729 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 21:00:17,736 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 21:00:26,970 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 21:00:27,221 INFO  L262         TraceCheckSpWp]: Trace formula consists of 36924 conjuncts, 12 conjunts are in the unsatisfiable core
[2023-12-25 21:00:27,303 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 21:00:37,465 INFO  L134       CoverageAnalysis]: Checked inductivity of 131 backedges. 131 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-25 21:00:37,465 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 21:00:37,465 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 21:00:37,465 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1445677871]
[2023-12-25 21:00:37,466 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 21:00:37,466 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [672554738]
[2023-12-25 21:00:37,466 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [672554738] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 21:00:37,466 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 21:00:37,467 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-12-25 21:00:37,467 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [122620142]
[2023-12-25 21:00:37,467 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 21:00:37,472 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-12-25 21:00:37,472 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 21:00:37,478 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-12-25 21:00:37,478 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42
[2023-12-25 21:00:37,481 INFO  L87              Difference]: Start difference. First operand 34965 states and 58212 transitions. Second operand  has 7 states, 7 states have (on average 1054.0) internal successors, (7378), 7 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 21:00:52,107 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 21:00:52,107 INFO  L93              Difference]: Finished difference Result 72035 states and 119946 transitions.
[2023-12-25 21:00:52,107 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. 
[2023-12-25 21:00:52,109 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 1054.0) internal successors, (7378), 7 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 21:00:52,112 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 21:00:52,150 INFO  L225             Difference]: With dead ends: 72035
[2023-12-25 21:00:52,150 INFO  L226             Difference]: Without dead ends: 43611
[2023-12-25 21:00:52,171 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 7379 GetRequests, 7372 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72
[2023-12-25 21:00:52,172 INFO  L413           NwaCegarLoop]: 16786 mSDtfsCounter, 22111 mSDsluCounter, 63561 mSDsCounter, 0 mSdLazyCounter, 25237 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22111 SdHoareTripleChecker+Valid, 80347 SdHoareTripleChecker+Invalid, 25239 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 25237 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.0s IncrementalHoareTripleChecker+Time
[2023-12-25 21:00:52,172 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [22111 Valid, 80347 Invalid, 25239 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [2 Valid, 25237 Invalid, 0 Unknown, 0 Unchecked, 14.0s Time]
[2023-12-25 21:00:52,206 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 43611 states.
[2023-12-25 21:00:52,485 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 43611 to 39105.
[2023-12-25 21:00:52,519 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 39105 states, 39104 states have (on average 1.6648936170212767) internal successors, (65104), 39104 states have internal predecessors, (65104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 21:00:52,748 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 39105 states to 39105 states and 65104 transitions.
[2023-12-25 21:00:52,748 INFO  L78                 Accepts]: Start accepts. Automaton has 39105 states and 65104 transitions. Word has length 7378
[2023-12-25 21:00:52,752 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 21:00:52,752 INFO  L495      AbstractCegarLoop]: Abstraction has 39105 states and 65104 transitions.
[2023-12-25 21:00:52,754 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 1054.0) internal successors, (7378), 7 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 21:00:52,754 INFO  L276                IsEmpty]: Start isEmpty. Operand 39105 states and 65104 transitions.
[2023-12-25 21:00:53,015 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 7379
[2023-12-25 21:00:53,015 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 21:00:53,016 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:00:53,115 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 21:00:53,217 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 21:00:53,218 INFO  L420      AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 21:00:53,220 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 21:00:53,221 INFO  L85        PathProgramCache]: Analyzing trace with hash 714141195, now seen corresponding path program 1 times
[2023-12-25 21:00:53,221 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 21:00:53,221 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1268741837]
[2023-12-25 21:00:53,371 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 21:00:53,372 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 21:00:53,910 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 21:00:53,911 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [720658160]
[2023-12-25 21:00:53,912 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 21:00:53,912 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 21:00:53,912 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 21:00:53,913 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 21:00:53,915 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 21:01:03,076 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 21:01:03,292 INFO  L262         TraceCheckSpWp]: Trace formula consists of 36925 conjuncts, 13 conjunts are in the unsatisfiable core
[2023-12-25 21:01:03,370 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 21:01:12,100 INFO  L134       CoverageAnalysis]: Checked inductivity of 131 backedges. 131 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-25 21:01:12,100 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 21:01:12,100 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 21:01:12,100 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1268741837]
[2023-12-25 21:01:12,100 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 21:01:12,100 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [720658160]
[2023-12-25 21:01:12,100 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [720658160] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 21:01:12,100 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 21:01:12,101 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-12-25 21:01:12,101 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1394103383]
[2023-12-25 21:01:12,101 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 21:01:12,105 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-12-25 21:01:12,105 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 21:01:12,110 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-12-25 21:01:12,110 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42
[2023-12-25 21:01:12,111 INFO  L87              Difference]: Start difference. First operand 39105 states and 65104 transitions. Second operand  has 7 states, 7 states have (on average 1054.0) internal successors, (7378), 7 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 21:01:27,694 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 21:01:27,695 INFO  L93              Difference]: Finished difference Result 88571 states and 147488 transitions.
[2023-12-25 21:01:27,695 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. 
[2023-12-25 21:01:27,697 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 1054.0) internal successors, (7378), 7 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 21:01:27,700 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 21:01:27,758 INFO  L225             Difference]: With dead ends: 88571
[2023-12-25 21:01:27,758 INFO  L226             Difference]: Without dead ends: 56007
[2023-12-25 21:01:27,789 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 7380 GetRequests, 7372 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90
[2023-12-25 21:01:27,790 INFO  L413           NwaCegarLoop]: 21919 mSDtfsCounter, 28069 mSDsluCounter, 73820 mSDsCounter, 0 mSdLazyCounter, 27691 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28069 SdHoareTripleChecker+Valid, 95739 SdHoareTripleChecker+Invalid, 27695 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 27691 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.9s IncrementalHoareTripleChecker+Time
[2023-12-25 21:01:27,790 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [28069 Valid, 95739 Invalid, 27695 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [4 Valid, 27691 Invalid, 0 Unknown, 0 Unchecked, 14.9s Time]
[2023-12-25 21:01:27,832 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 56007 states.
[2023-12-25 21:01:28,324 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 56007 to 37599.
[2023-12-25 21:01:28,355 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 37599 states, 37598 states have (on average 1.6649289855843397) internal successors, (62598), 37598 states have internal predecessors, (62598), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 21:01:28,393 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 37599 states to 37599 states and 62598 transitions.
[2023-12-25 21:01:28,393 INFO  L78                 Accepts]: Start accepts. Automaton has 37599 states and 62598 transitions. Word has length 7378
[2023-12-25 21:01:28,396 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 21:01:28,396 INFO  L495      AbstractCegarLoop]: Abstraction has 37599 states and 62598 transitions.
[2023-12-25 21:01:28,397 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 1054.0) internal successors, (7378), 7 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 21:01:28,397 INFO  L276                IsEmpty]: Start isEmpty. Operand 37599 states and 62598 transitions.
[2023-12-25 21:01:28,656 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 7379
[2023-12-25 21:01:28,656 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 21:01:28,658 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:01:28,759 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0
[2023-12-25 21:01:28,858 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 21:01:28,859 INFO  L420      AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 21:01:28,859 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 21:01:28,860 INFO  L85        PathProgramCache]: Analyzing trace with hash -851848563, now seen corresponding path program 1 times
[2023-12-25 21:01:28,860 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 21:01:28,860 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [239378613]
[2023-12-25 21:01:28,860 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 21:01:28,860 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 21:01:29,563 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 21:01:29,563 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1198320394]
[2023-12-25 21:01:29,565 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 21:01:29,565 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 21:01:29,565 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 21:01:29,566 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 21:01:29,568 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 21:01:38,861 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 21:01:39,138 INFO  L262         TraceCheckSpWp]: Trace formula consists of 36926 conjuncts, 12 conjunts are in the unsatisfiable core
[2023-12-25 21:01:39,442 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 21:01:47,667 INFO  L134       CoverageAnalysis]: Checked inductivity of 131 backedges. 131 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-25 21:01:47,667 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 21:01:47,667 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 21:01:47,667 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [239378613]
[2023-12-25 21:01:47,668 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 21:01:47,668 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1198320394]
[2023-12-25 21:01:47,668 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1198320394] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 21:01:47,668 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 21:01:47,668 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2023-12-25 21:01:47,668 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [195984891]
[2023-12-25 21:01:47,668 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 21:01:47,672 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2023-12-25 21:01:47,672 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 21:01:47,675 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2023-12-25 21:01:47,675 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30
[2023-12-25 21:01:47,676 INFO  L87              Difference]: Start difference. First operand 37599 states and 62598 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 21:01:59,252 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 21:01:59,252 INFO  L93              Difference]: Finished difference Result 75797 states and 126212 transitions.
[2023-12-25 21:01:59,252 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. 
[2023-12-25 21:01:59,254 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 21:01:59,258 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 21:01:59,303 INFO  L225             Difference]: With dead ends: 75797
[2023-12-25 21:01:59,303 INFO  L226             Difference]: Without dead ends: 44739
[2023-12-25 21:01:59,331 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 7379 GetRequests, 7373 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56
[2023-12-25 21:01:59,332 INFO  L413           NwaCegarLoop]: 16788 mSDtfsCounter, 18807 mSDsluCounter, 46791 mSDsCounter, 0 mSdLazyCounter, 20135 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18807 SdHoareTripleChecker+Valid, 63579 SdHoareTripleChecker+Invalid, 20137 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 20135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.1s IncrementalHoareTripleChecker+Time
[2023-12-25 21:01:59,332 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [18807 Valid, 63579 Invalid, 20137 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2 Valid, 20135 Invalid, 0 Unknown, 0 Unchecked, 11.1s Time]
[2023-12-25 21:01:59,371 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 44739 states.
[2023-12-25 21:01:59,800 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 44739 to 37599.
[2023-12-25 21:01:59,833 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 37599 states, 37598 states have (on average 1.6649289855843397) internal successors, (62598), 37598 states have internal predecessors, (62598), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 21:01:59,872 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 37599 states to 37599 states and 62598 transitions.
[2023-12-25 21:01:59,872 INFO  L78                 Accepts]: Start accepts. Automaton has 37599 states and 62598 transitions. Word has length 7378
[2023-12-25 21:01:59,875 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 21:01:59,875 INFO  L495      AbstractCegarLoop]: Abstraction has 37599 states and 62598 transitions.
[2023-12-25 21:01:59,876 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 21:01:59,876 INFO  L276                IsEmpty]: Start isEmpty. Operand 37599 states and 62598 transitions.
[2023-12-25 21:02:00,348 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 7379
[2023-12-25 21:02:00,348 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 21:02:00,350 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:02:00,461 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0
[2023-12-25 21:02:00,550 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 21:02:00,551 INFO  L420      AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 21:02:00,551 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 21:02:00,552 INFO  L85        PathProgramCache]: Analyzing trace with hash -503029685, now seen corresponding path program 1 times
[2023-12-25 21:02:00,552 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 21:02:00,552 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1537179242]
[2023-12-25 21:02:00,553 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 21:02:00,553 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 21:02:01,100 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 21:02:01,101 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [700934454]
[2023-12-25 21:02:01,102 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 21:02:01,102 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 21:02:01,102 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 21:02:01,103 INFO  L229       MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-25 21:02:01,105 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process
[2023-12-25 21:02:10,337 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 21:02:10,596 INFO  L262         TraceCheckSpWp]: Trace formula consists of 36927 conjuncts, 9 conjunts are in the unsatisfiable core
[2023-12-25 21:02:10,679 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 21:02:19,081 INFO  L134       CoverageAnalysis]: Checked inductivity of 131 backedges. 131 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-25 21:02:19,082 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 21:02:19,082 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 21:02:19,082 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1537179242]
[2023-12-25 21:02:19,082 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 21:02:19,082 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [700934454]
[2023-12-25 21:02:19,082 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [700934454] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 21:02:19,082 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 21:02:19,083 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2023-12-25 21:02:19,083 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [89858806]
[2023-12-25 21:02:19,083 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 21:02:19,087 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2023-12-25 21:02:19,087 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 21:02:19,090 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2023-12-25 21:02:19,090 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30
[2023-12-25 21:02:19,090 INFO  L87              Difference]: Start difference. First operand 37599 states and 62598 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 21:02:30,032 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 21:02:30,032 INFO  L93              Difference]: Finished difference Result 78433 states and 130602 transitions.
[2023-12-25 21:02:30,033 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. 
[2023-12-25 21:02:30,034 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 21:02:30,038 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 21:02:30,082 INFO  L225             Difference]: With dead ends: 78433
[2023-12-25 21:02:30,082 INFO  L226             Difference]: Without dead ends: 47375
[2023-12-25 21:02:30,110 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 7379 GetRequests, 7373 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56
[2023-12-25 21:02:30,111 INFO  L413           NwaCegarLoop]: 13246 mSDtfsCounter, 20067 mSDsluCounter, 39718 mSDsCounter, 0 mSdLazyCounter, 19467 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20067 SdHoareTripleChecker+Valid, 52964 SdHoareTripleChecker+Invalid, 19468 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19467 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.5s IncrementalHoareTripleChecker+Time
[2023-12-25 21:02:30,111 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [20067 Valid, 52964 Invalid, 19468 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 19467 Invalid, 0 Unknown, 0 Unchecked, 10.5s Time]
[2023-12-25 21:02:30,147 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 47375 states.
[2023-12-25 21:02:30,533 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 47375 to 40233.
[2023-12-25 21:02:30,567 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 40233 states, 40232 states have (on average 1.664993040365878) internal successors, (66986), 40232 states have internal predecessors, (66986), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 21:02:30,609 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 40233 states to 40233 states and 66986 transitions.
[2023-12-25 21:02:30,609 INFO  L78                 Accepts]: Start accepts. Automaton has 40233 states and 66986 transitions. Word has length 7378
[2023-12-25 21:02:30,612 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 21:02:30,612 INFO  L495      AbstractCegarLoop]: Abstraction has 40233 states and 66986 transitions.
[2023-12-25 21:02:30,613 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 21:02:30,613 INFO  L276                IsEmpty]: Start isEmpty. Operand 40233 states and 66986 transitions.
[2023-12-25 21:02:30,889 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 7380
[2023-12-25 21:02:30,889 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 21:02:30,891 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:02:30,998 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0
[2023-12-25 21:02:31,091 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25
[2023-12-25 21:02:31,092 INFO  L420      AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 21:02:31,092 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 21:02:31,093 INFO  L85        PathProgramCache]: Analyzing trace with hash -1293577101, now seen corresponding path program 1 times
[2023-12-25 21:02:31,093 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 21:02:31,093 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1398108161]
[2023-12-25 21:02:31,094 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 21:02:31,094 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 21:02:31,784 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 21:02:31,784 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1061542534]
[2023-12-25 21:02:31,786 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 21:02:31,786 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 21:02:31,786 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 21:02:31,787 INFO  L229       MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-25 21:02:31,788 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process
[2023-12-25 21:02:40,916 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 21:02:41,178 INFO  L262         TraceCheckSpWp]: Trace formula consists of 36927 conjuncts, 12 conjunts are in the unsatisfiable core
[2023-12-25 21:02:41,263 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 21:02:52,960 INFO  L134       CoverageAnalysis]: Checked inductivity of 131 backedges. 131 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-25 21:02:52,960 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 21:02:52,960 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 21:02:52,960 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1398108161]
[2023-12-25 21:02:52,960 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 21:02:52,960 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1061542534]
[2023-12-25 21:02:52,960 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1061542534] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 21:02:52,960 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 21:02:52,961 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-12-25 21:02:52,961 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [821464108]
[2023-12-25 21:02:52,961 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 21:02:52,964 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-12-25 21:02:52,964 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 21:02:52,968 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-12-25 21:02:52,968 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42
[2023-12-25 21:02:52,968 INFO  L87              Difference]: Start difference. First operand 40233 states and 66986 transitions. Second operand  has 7 states, 7 states have (on average 1054.142857142857) internal successors, (7379), 7 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 21:03:07,411 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 21:03:07,411 INFO  L93              Difference]: Finished difference Result 82571 states and 137490 transitions.
[2023-12-25 21:03:07,411 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. 
[2023-12-25 21:03:07,413 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 1054.142857142857) internal successors, (7379), 7 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 21:03:07,416 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 21:03:07,460 INFO  L225             Difference]: With dead ends: 82571
[2023-12-25 21:03:07,461 INFO  L226             Difference]: Without dead ends: 48879
[2023-12-25 21:03:07,491 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 7380 GetRequests, 7373 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72
[2023-12-25 21:03:07,491 INFO  L413           NwaCegarLoop]: 16713 mSDtfsCounter, 25419 mSDsluCounter, 63344 mSDsCounter, 0 mSdLazyCounter, 25107 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25419 SdHoareTripleChecker+Valid, 80057 SdHoareTripleChecker+Invalid, 25109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 25107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.8s IncrementalHoareTripleChecker+Time
[2023-12-25 21:03:07,492 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [25419 Valid, 80057 Invalid, 25109 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [2 Valid, 25107 Invalid, 0 Unknown, 0 Unchecked, 13.8s Time]
[2023-12-25 21:03:07,531 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 48879 states.
[2023-12-25 21:03:07,967 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 48879 to 44499.
[2023-12-25 21:03:08,006 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 44499 states, 44498 states have (on average 1.6648838150029215) internal successors, (74084), 44498 states have internal predecessors, (74084), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 21:03:08,052 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 44499 states to 44499 states and 74084 transitions.
[2023-12-25 21:03:08,052 INFO  L78                 Accepts]: Start accepts. Automaton has 44499 states and 74084 transitions. Word has length 7379
[2023-12-25 21:03:08,055 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 21:03:08,055 INFO  L495      AbstractCegarLoop]: Abstraction has 44499 states and 74084 transitions.
[2023-12-25 21:03:08,056 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 1054.142857142857) internal successors, (7379), 7 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 21:03:08,057 INFO  L276                IsEmpty]: Start isEmpty. Operand 44499 states and 74084 transitions.
[2023-12-25 21:03:08,322 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 7380
[2023-12-25 21:03:08,322 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 21:03:08,324 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:03:08,438 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0
[2023-12-25 21:03:08,524 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26
[2023-12-25 21:03:08,525 INFO  L420      AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 21:03:08,525 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 21:03:08,526 INFO  L85        PathProgramCache]: Analyzing trace with hash 1604453237, now seen corresponding path program 1 times
[2023-12-25 21:03:08,526 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 21:03:08,526 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1465809790]
[2023-12-25 21:03:08,527 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 21:03:08,527 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 21:03:09,256 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 21:03:09,256 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1134150305]
[2023-12-25 21:03:09,261 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 21:03:09,261 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 21:03:09,262 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 21:03:09,268 INFO  L229       MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-25 21:03:09,270 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process
[2023-12-25 21:03:18,447 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 21:03:18,689 INFO  L262         TraceCheckSpWp]: Trace formula consists of 36928 conjuncts, 13 conjunts are in the unsatisfiable core
[2023-12-25 21:03:18,768 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 21:03:27,947 INFO  L134       CoverageAnalysis]: Checked inductivity of 131 backedges. 131 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-25 21:03:27,947 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 21:03:27,947 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 21:03:27,947 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1465809790]
[2023-12-25 21:03:27,948 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 21:03:27,948 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1134150305]
[2023-12-25 21:03:27,948 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1134150305] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 21:03:27,948 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 21:03:27,948 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-12-25 21:03:27,949 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [604785626]
[2023-12-25 21:03:27,949 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 21:03:27,952 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-12-25 21:03:27,952 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 21:03:27,955 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-12-25 21:03:27,955 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42
[2023-12-25 21:03:27,956 INFO  L87              Difference]: Start difference. First operand 44499 states and 74084 transitions. Second operand  has 7 states, 7 states have (on average 1054.142857142857) internal successors, (7379), 7 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 21:03:42,021 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 21:03:42,021 INFO  L93              Difference]: Finished difference Result 99485 states and 165646 transitions.
[2023-12-25 21:03:42,022 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. 
[2023-12-25 21:03:42,023 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 1054.142857142857) internal successors, (7379), 7 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 21:03:42,027 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 21:03:42,082 INFO  L225             Difference]: With dead ends: 99485
[2023-12-25 21:03:42,082 INFO  L226             Difference]: Without dead ends: 61527
[2023-12-25 21:03:42,113 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 7381 GetRequests, 7373 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90
[2023-12-25 21:03:42,114 INFO  L413           NwaCegarLoop]: 21846 mSDtfsCounter, 28092 mSDsluCounter, 62894 mSDsCounter, 0 mSdLazyCounter, 23697 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28092 SdHoareTripleChecker+Valid, 84740 SdHoareTripleChecker+Invalid, 23701 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 23697 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.4s IncrementalHoareTripleChecker+Time
[2023-12-25 21:03:42,114 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [28092 Valid, 84740 Invalid, 23701 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [4 Valid, 23697 Invalid, 0 Unknown, 0 Unchecked, 13.4s Time]
[2023-12-25 21:03:42,153 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 61527 states.
[2023-12-25 21:03:42,578 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 61527 to 42993.
[2023-12-25 21:03:42,614 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 42993 states, 42992 states have (on average 1.6649144026795684) internal successors, (71578), 42992 states have internal predecessors, (71578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 21:03:42,658 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 42993 states to 42993 states and 71578 transitions.
[2023-12-25 21:03:42,658 INFO  L78                 Accepts]: Start accepts. Automaton has 42993 states and 71578 transitions. Word has length 7379
[2023-12-25 21:03:42,661 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 21:03:42,661 INFO  L495      AbstractCegarLoop]: Abstraction has 42993 states and 71578 transitions.
[2023-12-25 21:03:42,662 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 1054.142857142857) internal successors, (7379), 7 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 21:03:42,662 INFO  L276                IsEmpty]: Start isEmpty. Operand 42993 states and 71578 transitions.
[2023-12-25 21:03:43,363 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 7380
[2023-12-25 21:03:43,364 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 21:03:43,365 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:03:43,474 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0
[2023-12-25 21:03:43,566 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27
[2023-12-25 21:03:43,566 INFO  L420      AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 21:03:43,567 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 21:03:43,567 INFO  L85        PathProgramCache]: Analyzing trace with hash 303410995, now seen corresponding path program 1 times
[2023-12-25 21:03:43,567 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 21:03:43,567 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [200262974]
[2023-12-25 21:03:43,568 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 21:03:43,568 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 21:03:44,141 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 21:03:44,141 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2024355178]
[2023-12-25 21:03:44,142 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 21:03:44,143 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 21:03:44,143 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 21:03:44,144 INFO  L229       MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-25 21:03:44,145 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process
[2023-12-25 21:03:53,610 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 21:03:53,823 INFO  L262         TraceCheckSpWp]: Trace formula consists of 36929 conjuncts, 12 conjunts are in the unsatisfiable core
[2023-12-25 21:03:53,894 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 21:04:01,349 INFO  L134       CoverageAnalysis]: Checked inductivity of 131 backedges. 131 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-25 21:04:01,350 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 21:04:01,350 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 21:04:01,350 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [200262974]
[2023-12-25 21:04:01,350 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 21:04:01,350 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2024355178]
[2023-12-25 21:04:01,350 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [2024355178] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 21:04:01,350 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 21:04:01,351 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2023-12-25 21:04:01,351 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1656835209]
[2023-12-25 21:04:01,351 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 21:04:01,354 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2023-12-25 21:04:01,354 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 21:04:01,357 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2023-12-25 21:04:01,357 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30
[2023-12-25 21:04:01,358 INFO  L87              Difference]: Start difference. First operand 42993 states and 71578 transitions. Second operand  has 6 states, 6 states have (on average 1229.8333333333333) internal successors, (7379), 6 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 21:04:12,496 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 21:04:12,497 INFO  L93              Difference]: Finished difference Result 83951 states and 139782 transitions.
[2023-12-25 21:04:12,497 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. 
[2023-12-25 21:04:12,499 INFO  L78                 Accepts]: Start accepts. Automaton has  has 6 states, 6 states have (on average 1229.8333333333333) internal successors, (7379), 6 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 21:04:12,502 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 21:04:12,545 INFO  L225             Difference]: With dead ends: 83951
[2023-12-25 21:04:12,545 INFO  L226             Difference]: Without dead ends: 47499
[2023-12-25 21:04:12,574 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 7380 GetRequests, 7374 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56
[2023-12-25 21:04:12,574 INFO  L413           NwaCegarLoop]: 16715 mSDtfsCounter, 18762 mSDsluCounter, 46646 mSDsCounter, 0 mSdLazyCounter, 20038 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18762 SdHoareTripleChecker+Valid, 63361 SdHoareTripleChecker+Invalid, 20040 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 20038 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.7s IncrementalHoareTripleChecker+Time
[2023-12-25 21:04:12,574 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [18762 Valid, 63361 Invalid, 20040 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2 Valid, 20038 Invalid, 0 Unknown, 0 Unchecked, 10.7s Time]
[2023-12-25 21:04:12,609 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 47499 states.
[2023-12-25 21:04:13,041 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 47499 to 40359.
[2023-12-25 21:04:13,077 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 40359 states, 40358 states have (on average 1.66489915258437) internal successors, (67192), 40358 states have internal predecessors, (67192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 21:04:13,121 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 40359 states to 40359 states and 67192 transitions.
[2023-12-25 21:04:13,121 INFO  L78                 Accepts]: Start accepts. Automaton has 40359 states and 67192 transitions. Word has length 7379
[2023-12-25 21:04:13,124 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 21:04:13,124 INFO  L495      AbstractCegarLoop]: Abstraction has 40359 states and 67192 transitions.
[2023-12-25 21:04:13,125 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 6 states, 6 states have (on average 1229.8333333333333) internal successors, (7379), 6 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 21:04:13,125 INFO  L276                IsEmpty]: Start isEmpty. Operand 40359 states and 67192 transitions.
[2023-12-25 21:04:13,561 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 7380
[2023-12-25 21:04:13,561 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 21:04:13,563 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:04:13,658 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0
[2023-12-25 21:04:13,763 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 21:04:13,764 INFO  L420      AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 21:04:13,764 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 21:04:13,764 INFO  L85        PathProgramCache]: Analyzing trace with hash -1768105675, now seen corresponding path program 1 times
[2023-12-25 21:04:13,764 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 21:04:13,765 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [179663475]
[2023-12-25 21:04:13,765 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 21:04:13,765 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 21:04:14,374 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 21:04:14,375 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [330249913]
[2023-12-25 21:04:14,376 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 21:04:14,376 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 21:04:14,376 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 21:04:14,377 INFO  L229       MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-25 21:04:14,378 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process
[2023-12-25 21:04:23,460 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 21:04:23,695 INFO  L262         TraceCheckSpWp]: Trace formula consists of 36930 conjuncts, 11 conjunts are in the unsatisfiable core
[2023-12-25 21:04:23,765 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 21:04:29,731 INFO  L134       CoverageAnalysis]: Checked inductivity of 131 backedges. 131 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-25 21:04:29,731 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 21:04:29,731 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 21:04:29,731 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [179663475]
[2023-12-25 21:04:29,731 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 21:04:29,731 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [330249913]
[2023-12-25 21:04:29,731 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [330249913] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 21:04:29,731 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 21:04:29,732 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2023-12-25 21:04:29,732 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1650589748]
[2023-12-25 21:04:29,732 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 21:04:29,736 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2023-12-25 21:04:29,736 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 21:04:29,739 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2023-12-25 21:04:29,739 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30
[2023-12-25 21:04:29,740 INFO  L87              Difference]: Start difference. First operand 40359 states and 67192 transitions. Second operand  has 6 states, 6 states have (on average 1229.8333333333333) internal successors, (7379), 6 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 21:04:40,011 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 21:04:40,011 INFO  L93              Difference]: Finished difference Result 78683 states and 131010 transitions.
[2023-12-25 21:04:40,012 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. 
[2023-12-25 21:04:40,014 INFO  L78                 Accepts]: Start accepts. Automaton has  has 6 states, 6 states have (on average 1229.8333333333333) internal successors, (7379), 6 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 21:04:40,017 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 21:04:40,052 INFO  L225             Difference]: With dead ends: 78683
[2023-12-25 21:04:40,052 INFO  L226             Difference]: Without dead ends: 44865
[2023-12-25 21:04:40,069 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 7380 GetRequests, 7374 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56
[2023-12-25 21:04:40,070 INFO  L413           NwaCegarLoop]: 13248 mSDtfsCounter, 16574 mSDsluCounter, 39720 mSDsCounter, 0 mSdLazyCounter, 19463 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16574 SdHoareTripleChecker+Valid, 52968 SdHoareTripleChecker+Invalid, 19464 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19463 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.7s IncrementalHoareTripleChecker+Time
[2023-12-25 21:04:40,070 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [16574 Valid, 52968 Invalid, 19464 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 19463 Invalid, 0 Unknown, 0 Unchecked, 9.7s Time]
[2023-12-25 21:04:40,097 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 44865 states.
[2023-12-25 21:04:40,383 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 44865 to 40483.
[2023-12-25 21:04:40,415 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 40483 states, 40482 states have (on average 1.6648386937404278) internal successors, (67396), 40482 states have internal predecessors, (67396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 21:04:40,456 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 40483 states to 40483 states and 67396 transitions.
[2023-12-25 21:04:40,457 INFO  L78                 Accepts]: Start accepts. Automaton has 40483 states and 67396 transitions. Word has length 7379
[2023-12-25 21:04:40,460 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 21:04:40,460 INFO  L495      AbstractCegarLoop]: Abstraction has 40483 states and 67396 transitions.
[2023-12-25 21:04:40,461 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 6 states, 6 states have (on average 1229.8333333333333) internal successors, (7379), 6 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 21:04:40,461 INFO  L276                IsEmpty]: Start isEmpty. Operand 40483 states and 67396 transitions.
[2023-12-25 21:04:40,926 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 7381
[2023-12-25 21:04:40,926 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 21:04:40,928 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:04:41,039 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0
[2023-12-25 21:04:41,128 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 21:04:41,129 INFO  L420      AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 21:04:41,229 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 21:04:41,229 INFO  L85        PathProgramCache]: Analyzing trace with hash -361631633, now seen corresponding path program 1 times
[2023-12-25 21:04:41,229 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 21:04:41,230 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1854608904]
[2023-12-25 21:04:41,230 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 21:04:41,230 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 21:04:41,814 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 21:04:41,814 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1368486073]
[2023-12-25 21:04:41,816 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 21:04:41,816 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 21:04:41,816 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 21:04:41,817 INFO  L229       MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-25 21:04:41,819 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process
[2023-12-25 21:04:50,776 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 21:04:51,010 INFO  L262         TraceCheckSpWp]: Trace formula consists of 36930 conjuncts, 12 conjunts are in the unsatisfiable core
[2023-12-25 21:04:51,164 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 21:05:01,378 INFO  L134       CoverageAnalysis]: Checked inductivity of 131 backedges. 131 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-25 21:05:01,379 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 21:05:01,379 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 21:05:01,379 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1854608904]
[2023-12-25 21:05:01,379 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 21:05:01,379 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1368486073]
[2023-12-25 21:05:01,379 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1368486073] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 21:05:01,379 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 21:05:01,380 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-12-25 21:05:01,380 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1236932928]
[2023-12-25 21:05:01,380 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 21:05:01,383 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-12-25 21:05:01,383 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 21:05:01,387 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-12-25 21:05:01,387 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42
[2023-12-25 21:05:01,388 INFO  L87              Difference]: Start difference. First operand 40483 states and 67396 transitions. Second operand  has 7 states, 7 states have (on average 1054.2857142857142) internal successors, (7380), 7 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 21:05:15,548 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 21:05:15,548 INFO  L93              Difference]: Finished difference Result 83071 states and 138306 transitions.
[2023-12-25 21:05:15,548 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. 
[2023-12-25 21:05:15,550 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 1054.2857142857142) internal successors, (7380), 7 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 21:05:15,554 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 21:05:15,601 INFO  L225             Difference]: With dead ends: 83071
[2023-12-25 21:05:15,601 INFO  L226             Difference]: Without dead ends: 49129
[2023-12-25 21:05:15,630 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 7381 GetRequests, 7374 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72
[2023-12-25 21:05:15,630 INFO  L413           NwaCegarLoop]: 16664 mSDtfsCounter, 25422 mSDsluCounter, 63199 mSDsCounter, 0 mSdLazyCounter, 25041 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25422 SdHoareTripleChecker+Valid, 79863 SdHoareTripleChecker+Invalid, 25043 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 25041 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.6s IncrementalHoareTripleChecker+Time
[2023-12-25 21:05:15,630 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [25422 Valid, 79863 Invalid, 25043 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [2 Valid, 25041 Invalid, 0 Unknown, 0 Unchecked, 13.6s Time]
[2023-12-25 21:05:15,668 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 49129 states.
[2023-12-25 21:05:15,985 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 49129 to 44827.
[2023-12-25 21:05:16,023 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 44827 states, 44826 states have (on average 1.6646589033150403) internal successors, (74620), 44826 states have internal predecessors, (74620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 21:05:16,070 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 44827 states to 44827 states and 74620 transitions.
[2023-12-25 21:05:16,070 INFO  L78                 Accepts]: Start accepts. Automaton has 44827 states and 74620 transitions. Word has length 7380
[2023-12-25 21:05:16,073 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 21:05:16,073 INFO  L495      AbstractCegarLoop]: Abstraction has 44827 states and 74620 transitions.
[2023-12-25 21:05:16,074 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 1054.2857142857142) internal successors, (7380), 7 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 21:05:16,074 INFO  L276                IsEmpty]: Start isEmpty. Operand 44827 states and 74620 transitions.
[2023-12-25 21:05:16,785 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 7381
[2023-12-25 21:05:16,785 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 21:05:16,787 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:05:16,900 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0
[2023-12-25 21:05:16,988 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable30
[2023-12-25 21:05:16,988 INFO  L420      AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 21:05:16,989 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 21:05:16,989 INFO  L85        PathProgramCache]: Analyzing trace with hash -717004371, now seen corresponding path program 1 times
[2023-12-25 21:05:16,989 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 21:05:16,989 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [260349461]
[2023-12-25 21:05:16,990 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 21:05:16,990 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 21:05:17,553 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 21:05:17,553 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1727425685]
[2023-12-25 21:05:17,555 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 21:05:17,555 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 21:05:17,555 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 21:05:17,556 INFO  L229       MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-25 21:05:17,557 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process
Received shutdown request...
[2023-12-25 21:05:19,143 WARN  L340       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Timeout while monitored process is still running, waiting 1000 ms for graceful end
[2023-12-25 21:05:19,143 WARN  L340       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end
[2023-12-25 21:05:20,168 ERROR L246   FreeRefinementEngine]: Caught known exception: Timeout or Toolchain cancelled by user
[2023-12-25 21:05:20,171 INFO  L805   garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining)
[2023-12-25 21:05:20,175 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0
[2023-12-25 21:05:20,344 WARN  L435       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forcibly destroying the process
[2023-12-25 21:05:20,372 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31
[2023-12-25 21:05:20,372 WARN  L619      AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was analyzing trace of length 7381 with TraceHistMax 2,while AutomatonFreeRefinementEngine was Timeout during CAMEL.
[2023-12-25 21:05:20,376 INFO  L445         BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-12-25 21:05:20,378 INFO  L179   ceAbstractionStarter]: Computing trace abstraction results
[2023-12-25 21:05:20,379 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.12 09:05:20 BoogieIcfgContainer
[2023-12-25 21:05:20,379 INFO  L131        PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2023-12-25 21:05:20,379 INFO  L158              Benchmark]: Toolchain (without parser) took 743557.81ms. Allocated memory was 243.3MB in the beginning and 6.0GB in the end (delta: 5.8GB). Free memory was 167.1MB in the beginning and 1.7GB in the end (delta: -1.6GB). Peak memory consumption was 4.2GB. Max. memory is 8.0GB.
[2023-12-25 21:05:20,380 INFO  L158              Benchmark]: CDTParser took 0.11ms. Allocated memory is still 184.5MB. Free memory was 131.9MB in the beginning and 131.8MB in the end (delta: 129.5kB). There was no memory consumed. Max. memory is 8.0GB.
[2023-12-25 21:05:20,380 INFO  L158              Benchmark]: CACSL2BoogieTranslator took 2699.88ms. Allocated memory was 243.3MB in the beginning and 375.4MB in the end (delta: 132.1MB). Free memory was 166.5MB in the beginning and 138.2MB in the end (delta: 28.3MB). Peak memory consumption was 255.9MB. Max. memory is 8.0GB.
[2023-12-25 21:05:20,380 INFO  L158              Benchmark]: Boogie Procedure Inliner took 4809.57ms. Allocated memory was 375.4MB in the beginning and 4.0GB in the end (delta: 3.6GB). Free memory was 138.2MB in the beginning and 3.2GB in the end (delta: -3.0GB). Peak memory consumption was 655.9MB. Max. memory is 8.0GB.
[2023-12-25 21:05:20,380 INFO  L158              Benchmark]: Boogie Preprocessor took 4220.06ms. Allocated memory is still 4.0GB. Free memory was 3.2GB in the beginning and 2.9GB in the end (delta: 282.6MB). Peak memory consumption was 294.6MB. Max. memory is 8.0GB.
[2023-12-25 21:05:20,380 INFO  L158              Benchmark]: RCFGBuilder took 22176.18ms. Allocated memory was 4.0GB in the beginning and 5.6GB in the end (delta: 1.6GB). Free memory was 2.9GB in the beginning and 3.9GB in the end (delta: -986.5MB). Peak memory consumption was 1.2GB. Max. memory is 8.0GB.
[2023-12-25 21:05:20,380 INFO  L158              Benchmark]: TraceAbstraction took 709642.54ms. Allocated memory was 5.6GB in the beginning and 6.0GB in the end (delta: 421.5MB). Free memory was 3.9GB in the beginning and 1.7GB in the end (delta: 2.1GB). Peak memory consumption was 2.6GB. Max. memory is 8.0GB.
[2023-12-25 21:05:20,381 INFO  L338   ainManager$Toolchain]: #######################  End [Toolchain 1] #######################
 --- Results ---
 * Results from de.uni_freiburg.informatik.ultimate.core:
  - StatisticsResult: Toolchain Benchmarks
    Benchmark results are:
 * CDTParser took 0.11ms. Allocated memory is still 184.5MB. Free memory was 131.9MB in the beginning and 131.8MB in the end (delta: 129.5kB). There was no memory consumed. Max. memory is 8.0GB.
 * CACSL2BoogieTranslator took 2699.88ms. Allocated memory was 243.3MB in the beginning and 375.4MB in the end (delta: 132.1MB). Free memory was 166.5MB in the beginning and 138.2MB in the end (delta: 28.3MB). Peak memory consumption was 255.9MB. Max. memory is 8.0GB.
 * Boogie Procedure Inliner took 4809.57ms. Allocated memory was 375.4MB in the beginning and 4.0GB in the end (delta: 3.6GB). Free memory was 138.2MB in the beginning and 3.2GB in the end (delta: -3.0GB). Peak memory consumption was 655.9MB. Max. memory is 8.0GB.
 * Boogie Preprocessor took 4220.06ms. Allocated memory is still 4.0GB. Free memory was 3.2GB in the beginning and 2.9GB in the end (delta: 282.6MB). Peak memory consumption was 294.6MB. Max. memory is 8.0GB.
 * RCFGBuilder took 22176.18ms. Allocated memory was 4.0GB in the beginning and 5.6GB in the end (delta: 1.6GB). Free memory was 2.9GB in the beginning and 3.9GB in the end (delta: -986.5MB). Peak memory consumption was 1.2GB. Max. memory is 8.0GB.
 * TraceAbstraction took 709642.54ms. Allocated memory was 5.6GB in the beginning and 6.0GB in the end (delta: 421.5MB). Free memory was 3.9GB in the beginning and 1.7GB in the end (delta: 2.1GB). Peak memory consumption was 2.6GB. Max. memory is 8.0GB.
 * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction:
  - StatisticsResult: ErrorAutomatonStatistics
    NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0
  - TimeoutResultAtElement [Line: 21]: Timeout (TraceAbstraction)
    Unable to prove that a call to reach_error is unreachable (line 21). Cancelled while NwaCegarLoop was analyzing trace of length 7381 with TraceHistMax 2,while AutomatonFreeRefinementEngine was Timeout during CAMEL.
  - StatisticsResult: Ultimate Automizer benchmark data
    CFG has 1 procedures, 10876 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 709.6s, OverallIterations: 32, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 10.1s, AutomataDifference: 249.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 890701 SdHoareTripleChecker+Valid, 234.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 890701 mSDsluCounter, 1615158 SdHoareTripleChecker+Invalid, 192.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1093944 mSDsCounter, 103 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 391778 IncrementalHoareTripleChecker+Invalid, 391881 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 103 mSolverCounterUnsat, 521214 mSDtfsCounter, 391778 mSolverCounterSat, 3.9s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 191783 GetRequests, 191621 SyntacticMatches, 0 SemanticMatches, 162 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 1.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=44827occurred in iteration=31, InterpolantAutomatonStates: 183, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 10.1s AutomataMinimizationTime, 31 MinimizatonAttempts, 149238 StatesRemovedByMinimization, 29 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 61.0s SsaConstructionTime, 140.8s SatisfiabilityAnalysisTime, 178.9s InterpolantComputationTime, 187281 NumberOfCodeBlocks, 187281 NumberOfCodeBlocksAsserted, 31 NumberOfCheckSat, 194623 ConstructedInterpolants, 0 QuantifiedInterpolants, 918960 SizeOfPredicates, 65 NumberOfNonLiveVariables, 922902 ConjunctsInSsa, 304 ConjunctsInUnsatCore, 32 InterpolantComputations, 31 PerfectInterpolantSequences, 3268/3394 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available
RESULT: Ultimate could not prove your program: Timeout
Completed graceful shutdown