/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.firewire_tree.2.prop1-func-interl.c


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


This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m
[2023-12-25 18:14:51,029 INFO  L188        SettingsManager]: Resetting all preferences to default values...
[2023-12-25 18:14:51,082 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 18:14:51,089 WARN  L101        SettingsManager]: Preference file contains the following unknown settings:
[2023-12-25 18:14:51,089 WARN  L103        SettingsManager]:   * de.uni_freiburg.informatik.ultimate.core.Log level for class
[2023-12-25 18:14:51,108 INFO  L130        SettingsManager]: Preferences different from defaults after loading the file:
[2023-12-25 18:14:51,110 INFO  L151        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2023-12-25 18:14:51,110 INFO  L153        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2023-12-25 18:14:51,110 INFO  L151        SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults:
[2023-12-25 18:14:51,113 INFO  L153        SettingsManager]:  * Use memory slicer=true
[2023-12-25 18:14:51,113 INFO  L151        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2023-12-25 18:14:51,114 INFO  L153        SettingsManager]:  * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2023-12-25 18:14:51,114 INFO  L151        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2023-12-25 18:14:51,115 INFO  L153        SettingsManager]:  * Create parallel compositions if possible=false
[2023-12-25 18:14:51,115 INFO  L153        SettingsManager]:  * Use SBE=true
[2023-12-25 18:14:51,115 INFO  L151        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2023-12-25 18:14:51,115 INFO  L153        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2023-12-25 18:14:51,115 INFO  L153        SettingsManager]:  * Overapproximate operations on floating types=true
[2023-12-25 18:14:51,116 INFO  L153        SettingsManager]:  * Check division by zero=IGNORE
[2023-12-25 18:14:51,116 INFO  L153        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2023-12-25 18:14:51,116 INFO  L153        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2023-12-25 18:14:51,116 INFO  L153        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2023-12-25 18:14:51,116 INFO  L153        SettingsManager]:  * Allow undefined functions=false
[2023-12-25 18:14:51,116 INFO  L153        SettingsManager]:  * Check if freed pointer was valid=false
[2023-12-25 18:14:51,117 INFO  L153        SettingsManager]:  * Use constant arrays=true
[2023-12-25 18:14:51,117 INFO  L151        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2023-12-25 18:14:51,117 INFO  L153        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2023-12-25 18:14:51,118 INFO  L153        SettingsManager]:  * Only consider context switches at boundaries of atomic blocks=true
[2023-12-25 18:14:51,118 INFO  L153        SettingsManager]:  * SMT solver=External_DefaultMode
[2023-12-25 18:14:51,118 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2023-12-25 18:14:51,119 INFO  L151        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2023-12-25 18:14:51,119 INFO  L153        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2023-12-25 18:14:51,119 INFO  L153        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopHeads
[2023-12-25 18:14:51,119 INFO  L153        SettingsManager]:  * Trace refinement strategy=CAMEL
[2023-12-25 18:14:51,119 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2023-12-25 18:14:51,119 INFO  L153        SettingsManager]:  * Apply one-shot large block encoding in concurrent analysis=false
[2023-12-25 18:14:51,119 INFO  L153        SettingsManager]:  * Automaton type used in concurrency analysis=PETRI_NET
[2023-12-25 18:14:51,119 INFO  L153        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2023-12-25 18:14:51,120 INFO  L153        SettingsManager]:  * Order on configurations for Petri net unfoldings=DBO
[2023-12-25 18:14:51,120 INFO  L153        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2023-12-25 18:14:51,120 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$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true
[2023-12-25 18:14:51,306 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2023-12-25 18:14:51,320 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2023-12-25 18:14:51,321 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2023-12-25 18:14:51,322 INFO  L270        PluginConnector]: Initializing CDTParser...
[2023-12-25 18:14:51,322 INFO  L274        PluginConnector]: CDTParser initialized
[2023-12-25 18:14:51,323 INFO  L431   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.firewire_tree.2.prop1-func-interl.c
[2023-12-25 18:14:52,390 INFO  L533              CDTParser]: Created temporary CDT project at NULL
[2023-12-25 18:14:52,791 INFO  L384              CDTParser]: Found 1 translation units.
[2023-12-25 18:14:52,791 INFO  L180              CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.firewire_tree.2.prop1-func-interl.c
[2023-12-25 18:14:52,839 INFO  L427              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a0fef0c32/86baab4d0bbf4ef8b042f8549f70bdf5/FLAGd2a4ad177
[2023-12-25 18:14:52,853 INFO  L435              CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a0fef0c32/86baab4d0bbf4ef8b042f8549f70bdf5
[2023-12-25 18:14:52,856 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2023-12-25 18:14:52,858 INFO  L133        ToolchainWalker]: Walking toolchain with 5 elements.
[2023-12-25 18:14:52,860 INFO  L112        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2023-12-25 18:14:52,860 INFO  L270        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2023-12-25 18:14:52,863 INFO  L274        PluginConnector]: CACSL2BoogieTranslator initialized
[2023-12-25 18:14:52,864 INFO  L184        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.12 06:14:52" (1/1) ...
[2023-12-25 18:14:52,865 INFO  L204        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@363ec298 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 06:14:52, skipping insertion in model container
[2023-12-25 18:14:52,865 INFO  L184        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.12 06:14:52" (1/1) ...
[2023-12-25 18:14:53,026 INFO  L177         MainTranslator]: Built tables and reachable declarations
[2023-12-25 18:14:53,242 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.firewire_tree.2.prop1-func-interl.c[1180,1193]
[2023-12-25 18:14:54,147 INFO  L209          PostProcessor]: Analyzing one entry point: main
[2023-12-25 18:14:54,154 INFO  L202         MainTranslator]: Completed pre-run
[2023-12-25 18:14:54,162 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.firewire_tree.2.prop1-func-interl.c[1180,1193]
[2023-12-25 18:14:54,806 INFO  L209          PostProcessor]: Analyzing one entry point: main
[2023-12-25 18:14:54,816 INFO  L206         MainTranslator]: Completed translation
[2023-12-25 18:14:54,818 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 06:14:54 WrapperNode
[2023-12-25 18:14:54,819 INFO  L131        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2023-12-25 18:14:54,819 INFO  L112        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2023-12-25 18:14:54,820 INFO  L270        PluginConnector]: Initializing Boogie Procedure Inliner...
[2023-12-25 18:14:54,820 INFO  L274        PluginConnector]: Boogie Procedure Inliner initialized
[2023-12-25 18:14:54,825 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 06:14:54" (1/1) ...
[2023-12-25 18:14:55,098 INFO  L184        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 06:14:54" (1/1) ...
[2023-12-25 18:14:59,476 INFO  L138                Inliner]: procedures = 17, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 60519
[2023-12-25 18:14:59,476 INFO  L131        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2023-12-25 18:14:59,477 INFO  L112        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2023-12-25 18:14:59,477 INFO  L270        PluginConnector]: Initializing Boogie Preprocessor...
[2023-12-25 18:14:59,477 INFO  L274        PluginConnector]: Boogie Preprocessor initialized
[2023-12-25 18:14:59,484 INFO  L184        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 06:14:54" (1/1) ...
[2023-12-25 18:14:59,484 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 06:14:54" (1/1) ...
[2023-12-25 18:15:00,711 INFO  L184        PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 06:14:54" (1/1) ...
[2023-12-25 18:15:01,322 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 18:15:01,323 INFO  L184        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 06:14:54" (1/1) ...
[2023-12-25 18:15:01,323 INFO  L184        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 06:14:54" (1/1) ...
[2023-12-25 18:15:02,635 INFO  L184        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 06:14:54" (1/1) ...
[2023-12-25 18:15:02,772 INFO  L184        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 06:14:54" (1/1) ...
[2023-12-25 18:15:02,991 INFO  L184        PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 06:14:54" (1/1) ...
[2023-12-25 18:15:03,140 INFO  L184        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 06:14:54" (1/1) ...
[2023-12-25 18:15:03,917 INFO  L131        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2023-12-25 18:15:03,918 INFO  L112        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2023-12-25 18:15:03,918 INFO  L270        PluginConnector]: Initializing RCFGBuilder...
[2023-12-25 18:15:03,918 INFO  L274        PluginConnector]: RCFGBuilder initialized
[2023-12-25 18:15:03,919 INFO  L184        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 06:14:54" (1/1) ...
[2023-12-25 18:15:03,931 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2023-12-25 18:15:03,938 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 18:15:03,968 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 18:15:03,970 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 18:15:03,990 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2023-12-25 18:15:03,990 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int#0
[2023-12-25 18:15:03,990 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2023-12-25 18:15:03,990 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2023-12-25 18:15:05,952 INFO  L241             CfgBuilder]: Building ICFG
[2023-12-25 18:15:05,954 INFO  L267             CfgBuilder]: Building CFG for each procedure with an implementation
[2023-12-25 18:15:26,485 INFO  L282             CfgBuilder]: Performing block encoding
[2023-12-25 18:15:27,065 INFO  L304             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2023-12-25 18:15:27,065 INFO  L309             CfgBuilder]: Removed 1 assume(true) statements.
[2023-12-25 18:15:27,065 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.12 06:15:27 BoogieIcfgContainer
[2023-12-25 18:15:27,066 INFO  L131        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2023-12-25 18:15:27,070 INFO  L112        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2023-12-25 18:15:27,070 INFO  L270        PluginConnector]: Initializing TraceAbstraction...
[2023-12-25 18:15:27,072 INFO  L274        PluginConnector]: TraceAbstraction initialized
[2023-12-25 18:15:27,072 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.12 06:14:52" (1/3) ...
[2023-12-25 18:15:27,073 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c0a4d41 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.12 06:15:27, skipping insertion in model container
[2023-12-25 18:15:27,073 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 06:14:54" (2/3) ...
[2023-12-25 18:15:27,074 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c0a4d41 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.12 06:15:27, skipping insertion in model container
[2023-12-25 18:15:27,074 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.12 06:15:27" (3/3) ...
[2023-12-25 18:15:27,075 INFO  L112   eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.firewire_tree.2.prop1-func-interl.c
[2023-12-25 18:15:27,086 INFO  L204   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2023-12-25 18:15:27,086 INFO  L163   ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2023-12-25 18:15:27,259 INFO  L356      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2023-12-25 18:15:27,265 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;@4c4d8bfd, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2023-12-25 18:15:27,265 INFO  L358      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2023-12-25 18:15:27,296 INFO  L276                IsEmpty]: Start isEmpty. Operand  has 13748 states, 13746 states have (on average 1.6673941510257528) internal successors, (22920), 13747 states have internal predecessors, (22920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 18:15:27,329 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 763
[2023-12-25 18:15:27,329 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 18:15:27,331 INFO  L195           NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:15:27,331 INFO  L420      AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 18:15:27,336 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 18:15:27,337 INFO  L85        PathProgramCache]: Analyzing trace with hash 152610740, now seen corresponding path program 1 times
[2023-12-25 18:15:27,343 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 18:15:27,344 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1597681540]
[2023-12-25 18:15:27,344 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 18:15:27,344 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 18:15:27,890 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 18:15:29,883 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 18:15:29,883 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 18:15:29,884 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1597681540]
[2023-12-25 18:15:29,884 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1597681540] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 18:15:29,884 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 18:15:29,884 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-12-25 18:15:29,886 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1815601548]
[2023-12-25 18:15:29,886 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 18:15:29,891 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-12-25 18:15:29,891 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 18:15:29,914 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-12-25 18:15:29,914 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-12-25 18:15:29,940 INFO  L87              Difference]: Start difference. First operand  has 13748 states, 13746 states have (on average 1.6673941510257528) internal successors, (22920), 13747 states have internal predecessors, (22920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand  has 4 states, 4 states have (on average 190.5) internal successors, (762), 4 states have internal predecessors, (762), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 18:15:30,374 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 18:15:30,374 INFO  L93              Difference]: Finished difference Result 26991 states and 45001 transitions.
[2023-12-25 18:15:30,375 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-12-25 18:15:30,377 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 190.5) internal successors, (762), 4 states have internal predecessors, (762), 0 states have call successors, (0), 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 762
[2023-12-25 18:15:30,379 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 18:15:30,425 INFO  L225             Difference]: With dead ends: 26991
[2023-12-25 18:15:30,425 INFO  L226             Difference]: Without dead ends: 13748
[2023-12-25 18:15:30,445 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 18:15:30,447 INFO  L413           NwaCegarLoop]: 22913 mSDtfsCounter, 1 mSDsluCounter, 45821 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 68734 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 18:15:30,448 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 68734 Invalid, 13 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-12-25 18:15:30,479 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 13748 states.
[2023-12-25 18:15:30,662 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 13748 to 13748.
[2023-12-25 18:15:30,686 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 13748 states, 13747 states have (on average 1.6671273732450715) internal successors, (22918), 13747 states have internal predecessors, (22918), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 18:15:30,715 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 13748 states to 13748 states and 22918 transitions.
[2023-12-25 18:15:30,716 INFO  L78                 Accepts]: Start accepts. Automaton has 13748 states and 22918 transitions. Word has length 762
[2023-12-25 18:15:30,717 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 18:15:30,717 INFO  L495      AbstractCegarLoop]: Abstraction has 13748 states and 22918 transitions.
[2023-12-25 18:15:30,718 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 190.5) internal successors, (762), 4 states have internal predecessors, (762), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 18:15:30,718 INFO  L276                IsEmpty]: Start isEmpty. Operand 13748 states and 22918 transitions.
[2023-12-25 18:15:30,727 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 764
[2023-12-25 18:15:30,728 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 18:15:30,728 INFO  L195           NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:15:30,728 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2023-12-25 18:15:30,729 INFO  L420      AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 18:15:30,729 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 18:15:30,729 INFO  L85        PathProgramCache]: Analyzing trace with hash 437695140, now seen corresponding path program 1 times
[2023-12-25 18:15:30,729 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 18:15:30,729 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1641352667]
[2023-12-25 18:15:30,730 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 18:15:30,730 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 18:15:31,036 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 18:15:31,886 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 18:15:31,887 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 18:15:31,887 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1641352667]
[2023-12-25 18:15:31,887 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1641352667] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 18:15:31,887 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 18:15:31,887 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-12-25 18:15:31,887 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [432156392]
[2023-12-25 18:15:31,887 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 18:15:31,890 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-12-25 18:15:31,893 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 18:15:31,893 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-12-25 18:15:31,894 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-12-25 18:15:31,894 INFO  L87              Difference]: Start difference. First operand 13748 states and 22918 transitions. Second operand  has 4 states, 4 states have (on average 190.75) internal successors, (763), 4 states have internal predecessors, (763), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 18:15:32,219 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 18:15:32,220 INFO  L93              Difference]: Finished difference Result 26994 states and 44999 transitions.
[2023-12-25 18:15:32,220 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-12-25 18:15:32,221 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 190.75) internal successors, (763), 4 states have internal predecessors, (763), 0 states have call successors, (0), 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 763
[2023-12-25 18:15:32,222 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 18:15:32,263 INFO  L225             Difference]: With dead ends: 26994
[2023-12-25 18:15:32,263 INFO  L226             Difference]: Without dead ends: 13751
[2023-12-25 18:15:32,279 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 18:15:32,281 INFO  L413           NwaCegarLoop]: 22913 mSDtfsCounter, 1 mSDsluCounter, 45819 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 68732 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 18:15:32,281 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 68732 Invalid, 15 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-12-25 18:15:32,301 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 13751 states.
[2023-12-25 18:15:32,467 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 13751 to 13750.
[2023-12-25 18:15:32,488 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 13750 states, 13749 states have (on average 1.6670303294785076) internal successors, (22920), 13749 states have internal predecessors, (22920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 18:15:32,509 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 13750 states to 13750 states and 22920 transitions.
[2023-12-25 18:15:32,510 INFO  L78                 Accepts]: Start accepts. Automaton has 13750 states and 22920 transitions. Word has length 763
[2023-12-25 18:15:32,511 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 18:15:32,511 INFO  L495      AbstractCegarLoop]: Abstraction has 13750 states and 22920 transitions.
[2023-12-25 18:15:32,511 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 190.75) internal successors, (763), 4 states have internal predecessors, (763), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 18:15:32,512 INFO  L276                IsEmpty]: Start isEmpty. Operand 13750 states and 22920 transitions.
[2023-12-25 18:15:32,523 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 765
[2023-12-25 18:15:32,524 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 18:15:32,524 INFO  L195           NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:15:32,524 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2023-12-25 18:15:32,524 INFO  L420      AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 18:15:32,530 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 18:15:32,531 INFO  L85        PathProgramCache]: Analyzing trace with hash -2046740400, now seen corresponding path program 1 times
[2023-12-25 18:15:32,531 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 18:15:32,531 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1196472481]
[2023-12-25 18:15:32,531 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 18:15:32,532 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 18:15:32,867 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 18:15:33,487 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 18:15:33,487 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 18:15:33,487 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1196472481]
[2023-12-25 18:15:33,487 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1196472481] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 18:15:33,487 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 18:15:33,487 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-12-25 18:15:33,487 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [662453993]
[2023-12-25 18:15:33,488 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 18:15:33,488 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-12-25 18:15:33,488 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 18:15:33,489 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-12-25 18:15:33,489 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-12-25 18:15:33,490 INFO  L87              Difference]: Start difference. First operand 13750 states and 22920 transitions. Second operand  has 4 states, 4 states have (on average 191.0) internal successors, (764), 4 states have internal predecessors, (764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 18:15:33,957 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 18:15:33,957 INFO  L93              Difference]: Finished difference Result 40230 states and 67063 transitions.
[2023-12-25 18:15:33,957 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-12-25 18:15:33,958 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 191.0) internal successors, (764), 4 states have internal predecessors, (764), 0 states have call successors, (0), 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 764
[2023-12-25 18:15:33,959 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 18:15:33,999 INFO  L225             Difference]: With dead ends: 40230
[2023-12-25 18:15:33,999 INFO  L226             Difference]: Without dead ends: 26985
[2023-12-25 18:15:34,019 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 18:15:34,020 INFO  L413           NwaCegarLoop]: 23954 mSDtfsCounter, 22061 mSDsluCounter, 46856 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22061 SdHoareTripleChecker+Valid, 70810 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-12-25 18:15:34,020 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [22061 Valid, 70810 Invalid, 20 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-12-25 18:15:34,046 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 26985 states.
[2023-12-25 18:15:34,253 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 26985 to 13752.
[2023-12-25 18:15:34,272 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 13752 states, 13751 states have (on average 1.6669333139408042) internal successors, (22922), 13751 states have internal predecessors, (22922), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 18:15:34,294 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 13752 states to 13752 states and 22922 transitions.
[2023-12-25 18:15:34,294 INFO  L78                 Accepts]: Start accepts. Automaton has 13752 states and 22922 transitions. Word has length 764
[2023-12-25 18:15:34,295 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 18:15:34,295 INFO  L495      AbstractCegarLoop]: Abstraction has 13752 states and 22922 transitions.
[2023-12-25 18:15:34,296 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 191.0) internal successors, (764), 4 states have internal predecessors, (764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 18:15:34,297 INFO  L276                IsEmpty]: Start isEmpty. Operand 13752 states and 22922 transitions.
[2023-12-25 18:15:34,304 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 766
[2023-12-25 18:15:34,304 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 18:15:34,308 INFO  L195           NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:15:34,308 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2023-12-25 18:15:34,308 INFO  L420      AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 18:15:34,309 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 18:15:34,309 INFO  L85        PathProgramCache]: Analyzing trace with hash 864855052, now seen corresponding path program 1 times
[2023-12-25 18:15:34,309 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 18:15:34,309 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [22895149]
[2023-12-25 18:15:34,309 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 18:15:34,309 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 18:15:34,547 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 18:15:36,308 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 18:15:36,309 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 18:15:36,309 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [22895149]
[2023-12-25 18:15:36,309 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [22895149] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 18:15:36,309 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 18:15:36,309 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2023-12-25 18:15:36,309 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [489028382]
[2023-12-25 18:15:36,309 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 18:15:36,310 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2023-12-25 18:15:36,310 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 18:15:36,311 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2023-12-25 18:15:36,311 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30
[2023-12-25 18:15:36,311 INFO  L87              Difference]: Start difference. First operand 13752 states and 22922 transitions. Second operand  has 6 states, 6 states have (on average 127.5) internal successors, (765), 5 states have internal predecessors, (765), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 18:15:37,152 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 18:15:37,153 INFO  L93              Difference]: Finished difference Result 40867 states and 68120 transitions.
[2023-12-25 18:15:37,153 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. 
[2023-12-25 18:15:37,154 INFO  L78                 Accepts]: Start accepts. Automaton has  has 6 states, 6 states have (on average 127.5) internal successors, (765), 5 states have internal predecessors, (765), 0 states have call successors, (0), 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 765
[2023-12-25 18:15:37,155 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 18:15:37,198 INFO  L225             Difference]: With dead ends: 40867
[2023-12-25 18:15:37,198 INFO  L226             Difference]: Without dead ends: 27620
[2023-12-25 18:15:37,217 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110
[2023-12-25 18:15:37,220 INFO  L413           NwaCegarLoop]: 23945 mSDtfsCounter, 111473 mSDsluCounter, 68702 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 111473 SdHoareTripleChecker+Valid, 92647 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2023-12-25 18:15:37,220 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [111473 Valid, 92647 Invalid, 62 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [0 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2023-12-25 18:15:37,242 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 27620 states.
[2023-12-25 18:15:37,429 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 27620 to 14379.
[2023-12-25 18:15:37,446 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 14379 states, 14378 states have (on average 1.6669216859090277) internal successors, (23967), 14378 states have internal predecessors, (23967), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 18:15:37,466 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 14379 states to 14379 states and 23967 transitions.
[2023-12-25 18:15:37,466 INFO  L78                 Accepts]: Start accepts. Automaton has 14379 states and 23967 transitions. Word has length 765
[2023-12-25 18:15:37,467 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 18:15:37,467 INFO  L495      AbstractCegarLoop]: Abstraction has 14379 states and 23967 transitions.
[2023-12-25 18:15:37,467 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 6 states, 6 states have (on average 127.5) internal successors, (765), 5 states have internal predecessors, (765), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 18:15:37,467 INFO  L276                IsEmpty]: Start isEmpty. Operand 14379 states and 23967 transitions.
[2023-12-25 18:15:38,014 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 9557
[2023-12-25 18:15:38,014 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 18:15:38,018 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-12-25 18:15:38,019 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3
[2023-12-25 18:15:38,019 INFO  L420      AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 18:15:38,019 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 18:15:38,021 INFO  L85        PathProgramCache]: Analyzing trace with hash 43907390, now seen corresponding path program 1 times
[2023-12-25 18:15:38,021 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 18:15:38,021 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [328386315]
[2023-12-25 18:15:38,022 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 18:15:38,022 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 18:15:38,845 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 18:15:38,845 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [402615458]
[2023-12-25 18:15:38,847 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 18:15:38,848 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 18:15:38,848 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 18:15:38,850 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 18:15:38,853 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 18:15:48,883 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 18:15:49,179 INFO  L262         TraceCheckSpWp]: Trace formula consists of 42144 conjuncts, 6 conjunts are in the unsatisfiable core
[2023-12-25 18:15:49,368 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 18:15:49,634 INFO  L134       CoverageAnalysis]: Checked inductivity of 424 backedges. 424 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-25 18:15:49,635 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 18:15:49,635 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 18:15:49,635 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [328386315]
[2023-12-25 18:15:49,635 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 18:15:49,635 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [402615458]
[2023-12-25 18:15:49,635 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [402615458] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 18:15:49,635 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 18:15:49,636 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-12-25 18:15:49,637 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1365179600]
[2023-12-25 18:15:49,637 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 18:15:49,645 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-12-25 18:15:49,645 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 18:15:49,653 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-12-25 18:15:49,654 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-12-25 18:15:49,657 INFO  L87              Difference]: Start difference. First operand 14379 states and 23967 transitions. Second operand  has 4 states, 4 states have (on average 2389.0) internal successors, (9556), 4 states have internal predecessors, (9556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 18:15:49,949 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 18:15:49,949 INFO  L93              Difference]: Finished difference Result 27636 states and 46064 transitions.
[2023-12-25 18:15:49,950 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-12-25 18:15:49,953 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 2389.0) internal successors, (9556), 4 states have internal predecessors, (9556), 0 states have call successors, (0), 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 9556
[2023-12-25 18:15:49,954 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 18:15:49,976 INFO  L225             Difference]: With dead ends: 27636
[2023-12-25 18:15:49,976 INFO  L226             Difference]: Without dead ends: 14389
[2023-12-25 18:15:49,990 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 9555 GetRequests, 9553 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 18:15:49,991 INFO  L413           NwaCegarLoop]: 22913 mSDtfsCounter, 12 mSDsluCounter, 45816 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 68729 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-12-25 18:15:49,991 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 68729 Invalid, 18 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-12-25 18:15:50,010 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14389 states.
[2023-12-25 18:15:50,178 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14389 to 14381.
[2023-12-25 18:15:50,194 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 14381 states, 14380 states have (on average 1.6668289290681502) internal successors, (23969), 14380 states have internal predecessors, (23969), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 18:15:50,216 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 14381 states to 14381 states and 23969 transitions.
[2023-12-25 18:15:50,216 INFO  L78                 Accepts]: Start accepts. Automaton has 14381 states and 23969 transitions. Word has length 9556
[2023-12-25 18:15:50,218 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 18:15:50,218 INFO  L495      AbstractCegarLoop]: Abstraction has 14381 states and 23969 transitions.
[2023-12-25 18:15:50,220 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 2389.0) internal successors, (9556), 4 states have internal predecessors, (9556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 18:15:50,221 INFO  L276                IsEmpty]: Start isEmpty. Operand 14381 states and 23969 transitions.
[2023-12-25 18:15:51,089 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 9557
[2023-12-25 18:15:51,090 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 18:15:51,094 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-12-25 18:15:51,227 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 18:15:51,320 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 18:15:51,320 INFO  L420      AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 18:15:51,323 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 18:15:51,326 INFO  L85        PathProgramCache]: Analyzing trace with hash 1115455116, now seen corresponding path program 1 times
[2023-12-25 18:15:51,326 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 18:15:51,326 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1452863252]
[2023-12-25 18:15:51,327 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 18:15:51,327 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 18:15:51,966 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 18:15:51,966 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2131549478]
[2023-12-25 18:15:51,968 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 18:15:51,969 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 18:15:51,969 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 18:15:51,970 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 18:15:51,972 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 18:16:01,720 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 18:16:02,024 INFO  L262         TraceCheckSpWp]: Trace formula consists of 42145 conjuncts, 6 conjunts are in the unsatisfiable core
[2023-12-25 18:16:02,229 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 18:16:02,388 INFO  L134       CoverageAnalysis]: Checked inductivity of 424 backedges. 424 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-25 18:16:02,388 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 18:16:02,388 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 18:16:02,388 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1452863252]
[2023-12-25 18:16:02,389 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 18:16:02,391 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2131549478]
[2023-12-25 18:16:02,391 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [2131549478] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 18:16:02,392 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 18:16:02,393 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-12-25 18:16:02,393 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1352414705]
[2023-12-25 18:16:02,393 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 18:16:02,400 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-12-25 18:16:02,400 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 18:16:02,406 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-12-25 18:16:02,407 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-12-25 18:16:02,409 INFO  L87              Difference]: Start difference. First operand 14381 states and 23969 transitions. Second operand  has 4 states, 4 states have (on average 2389.0) internal successors, (9556), 4 states have internal predecessors, (9556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 18:16:02,717 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 18:16:02,717 INFO  L93              Difference]: Finished difference Result 27639 states and 46066 transitions.
[2023-12-25 18:16:02,718 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-12-25 18:16:02,720 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 2389.0) internal successors, (9556), 4 states have internal predecessors, (9556), 0 states have call successors, (0), 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 9556
[2023-12-25 18:16:02,725 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 18:16:02,743 INFO  L225             Difference]: With dead ends: 27639
[2023-12-25 18:16:02,744 INFO  L226             Difference]: Without dead ends: 14390
[2023-12-25 18:16:02,756 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 9555 GetRequests, 9553 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 18:16:02,757 INFO  L413           NwaCegarLoop]: 22913 mSDtfsCounter, 12 mSDsluCounter, 45816 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 68729 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-12-25 18:16:02,757 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 68729 Invalid, 17 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-12-25 18:16:02,774 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14390 states.
[2023-12-25 18:16:02,893 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14390 to 14382.
[2023-12-25 18:16:02,909 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 14382 states, 14381 states have (on average 1.666782560322648) internal successors, (23970), 14381 states have internal predecessors, (23970), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 18:16:02,928 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 14382 states to 14382 states and 23970 transitions.
[2023-12-25 18:16:02,928 INFO  L78                 Accepts]: Start accepts. Automaton has 14382 states and 23970 transitions. Word has length 9556
[2023-12-25 18:16:02,931 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 18:16:02,931 INFO  L495      AbstractCegarLoop]: Abstraction has 14382 states and 23970 transitions.
[2023-12-25 18:16:02,933 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 2389.0) internal successors, (9556), 4 states have internal predecessors, (9556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 18:16:02,933 INFO  L276                IsEmpty]: Start isEmpty. Operand 14382 states and 23970 transitions.
[2023-12-25 18:16:03,505 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 9557
[2023-12-25 18:16:03,506 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 18:16:03,513 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-12-25 18:16:03,635 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 18:16:03,736 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5
[2023-12-25 18:16:03,736 INFO  L420      AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 18:16:03,737 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 18:16:03,739 INFO  L85        PathProgramCache]: Analyzing trace with hash -795789606, now seen corresponding path program 1 times
[2023-12-25 18:16:03,739 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 18:16:03,739 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [55444340]
[2023-12-25 18:16:03,740 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 18:16:03,740 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 18:16:04,340 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 18:16:04,340 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [14364810]
[2023-12-25 18:16:04,342 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 18:16:04,342 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 18:16:04,342 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 18:16:04,343 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 18:16:04,354 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 18:16:13,834 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 18:16:14,142 INFO  L262         TraceCheckSpWp]: Trace formula consists of 42146 conjuncts, 12 conjunts are in the unsatisfiable core
[2023-12-25 18:16:14,281 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 18:16:16,152 INFO  L134       CoverageAnalysis]: Checked inductivity of 424 backedges. 424 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-25 18:16:16,152 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 18:16:16,152 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 18:16:16,152 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [55444340]
[2023-12-25 18:16:16,152 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 18:16:16,152 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [14364810]
[2023-12-25 18:16:16,152 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [14364810] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 18:16:16,153 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 18:16:16,153 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2023-12-25 18:16:16,153 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1742614004]
[2023-12-25 18:16:16,154 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 18:16:16,160 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-12-25 18:16:16,160 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 18:16:16,167 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-12-25 18:16:16,167 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-12-25 18:16:16,170 INFO  L87              Difference]: Start difference. First operand 14382 states and 23970 transitions. Second operand  has 4 states, 4 states have (on average 2389.0) internal successors, (9556), 3 states have internal predecessors, (9556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 18:16:21,844 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 18:16:21,845 INFO  L93              Difference]: Finished difference Result 27639 states and 46061 transitions.
[2023-12-25 18:16:21,846 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-12-25 18:16:21,848 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 2389.0) internal successors, (9556), 3 states have internal predecessors, (9556), 0 states have call successors, (0), 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 9556
[2023-12-25 18:16:21,849 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 18:16:21,868 INFO  L225             Difference]: With dead ends: 27639
[2023-12-25 18:16:21,868 INFO  L226             Difference]: Without dead ends: 14389
[2023-12-25 18:16:21,881 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 9556 GetRequests, 9553 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 18:16:21,881 INFO  L413           NwaCegarLoop]: 17821 mSDtfsCounter, 44227 mSDsluCounter, 634 mSDsCounter, 0 mSdLazyCounter, 7404 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44227 SdHoareTripleChecker+Valid, 18455 SdHoareTripleChecker+Invalid, 7404 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7404 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.4s IncrementalHoareTripleChecker+Time
[2023-12-25 18:16:21,882 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [44227 Valid, 18455 Invalid, 7404 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 7404 Invalid, 0 Unknown, 0 Unchecked, 5.4s Time]
[2023-12-25 18:16:21,902 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14389 states.
[2023-12-25 18:16:22,027 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14389 to 14382.
[2023-12-25 18:16:22,043 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 14382 states, 14381 states have (on average 1.666713024129059) internal successors, (23969), 14381 states have internal predecessors, (23969), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 18:16:22,061 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 14382 states to 14382 states and 23969 transitions.
[2023-12-25 18:16:22,062 INFO  L78                 Accepts]: Start accepts. Automaton has 14382 states and 23969 transitions. Word has length 9556
[2023-12-25 18:16:22,063 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 18:16:22,063 INFO  L495      AbstractCegarLoop]: Abstraction has 14382 states and 23969 transitions.
[2023-12-25 18:16:22,065 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 2389.0) internal successors, (9556), 3 states have internal predecessors, (9556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 18:16:22,065 INFO  L276                IsEmpty]: Start isEmpty. Operand 14382 states and 23969 transitions.
[2023-12-25 18:16:22,683 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 9558
[2023-12-25 18:16:22,684 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 18:16:22,687 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-12-25 18:16:22,807 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 18:16:22,888 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 18:16:22,888 INFO  L420      AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 18:16:22,890 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 18:16:22,892 INFO  L85        PathProgramCache]: Analyzing trace with hash -995608086, now seen corresponding path program 1 times
[2023-12-25 18:16:22,892 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 18:16:22,892 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1335049134]
[2023-12-25 18:16:22,893 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 18:16:22,893 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 18:16:23,572 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 18:16:23,572 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [663820795]
[2023-12-25 18:16:23,574 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 18:16:23,574 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 18:16:23,575 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 18:16:23,609 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 18:16:23,611 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 18:16:33,189 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 18:16:33,485 INFO  L262         TraceCheckSpWp]: Trace formula consists of 42147 conjuncts, 12 conjunts are in the unsatisfiable core
[2023-12-25 18:16:33,620 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 18:16:35,444 INFO  L134       CoverageAnalysis]: Checked inductivity of 424 backedges. 424 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-25 18:16:35,444 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 18:16:35,444 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 18:16:35,445 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1335049134]
[2023-12-25 18:16:35,445 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 18:16:35,445 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [663820795]
[2023-12-25 18:16:35,445 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [663820795] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 18:16:35,445 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 18:16:35,446 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2023-12-25 18:16:35,446 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1185298241]
[2023-12-25 18:16:35,446 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 18:16:35,452 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-12-25 18:16:35,453 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 18:16:35,459 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-12-25 18:16:35,460 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-12-25 18:16:35,462 INFO  L87              Difference]: Start difference. First operand 14382 states and 23969 transitions. Second operand  has 4 states, 4 states have (on average 2389.25) internal successors, (9557), 3 states have internal predecessors, (9557), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 18:16:41,103 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 18:16:41,103 INFO  L93              Difference]: Finished difference Result 27646 states and 46070 transitions.
[2023-12-25 18:16:41,103 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-12-25 18:16:41,105 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 2389.25) internal successors, (9557), 3 states have internal predecessors, (9557), 0 states have call successors, (0), 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 9557
[2023-12-25 18:16:41,115 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 18:16:41,129 INFO  L225             Difference]: With dead ends: 27646
[2023-12-25 18:16:41,129 INFO  L226             Difference]: Without dead ends: 14396
[2023-12-25 18:16:41,139 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 9557 GetRequests, 9554 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 18:16:41,140 INFO  L413           NwaCegarLoop]: 17830 mSDtfsCounter, 44220 mSDsluCounter, 644 mSDsCounter, 0 mSdLazyCounter, 7406 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44220 SdHoareTripleChecker+Valid, 18474 SdHoareTripleChecker+Invalid, 7406 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7406 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.4s IncrementalHoareTripleChecker+Time
[2023-12-25 18:16:41,141 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [44220 Valid, 18474 Invalid, 7406 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 7406 Invalid, 0 Unknown, 0 Unchecked, 5.4s Time]
[2023-12-25 18:16:41,159 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14396 states.
[2023-12-25 18:16:41,279 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14396 to 14382.
[2023-12-25 18:16:41,295 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 14382 states, 14381 states have (on average 1.6666434879354703) internal successors, (23968), 14381 states have internal predecessors, (23968), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 18:16:41,314 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 14382 states to 14382 states and 23968 transitions.
[2023-12-25 18:16:41,314 INFO  L78                 Accepts]: Start accepts. Automaton has 14382 states and 23968 transitions. Word has length 9557
[2023-12-25 18:16:41,315 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 18:16:41,315 INFO  L495      AbstractCegarLoop]: Abstraction has 14382 states and 23968 transitions.
[2023-12-25 18:16:41,317 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 2389.25) internal successors, (9557), 3 states have internal predecessors, (9557), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 18:16:41,317 INFO  L276                IsEmpty]: Start isEmpty. Operand 14382 states and 23968 transitions.
[2023-12-25 18:16:41,847 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 9559
[2023-12-25 18:16:41,847 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 18:16:41,851 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-12-25 18:16:41,984 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 18:16:42,076 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 18:16:42,076 INFO  L420      AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 18:16:42,077 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 18:16:42,080 INFO  L85        PathProgramCache]: Analyzing trace with hash -1145226327, now seen corresponding path program 1 times
[2023-12-25 18:16:42,080 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 18:16:42,080 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1669673075]
[2023-12-25 18:16:42,081 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 18:16:42,081 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 18:16:42,853 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 18:16:42,854 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [817036964]
[2023-12-25 18:16:42,856 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 18:16:42,856 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 18:16:42,856 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 18:16:42,857 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 18:16:42,859 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 18:16:52,693 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 18:16:52,977 INFO  L262         TraceCheckSpWp]: Trace formula consists of 42148 conjuncts, 12 conjunts are in the unsatisfiable core
[2023-12-25 18:16:53,145 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 18:16:54,688 INFO  L134       CoverageAnalysis]: Checked inductivity of 424 backedges. 424 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-25 18:16:54,688 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 18:16:54,688 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 18:16:54,688 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1669673075]
[2023-12-25 18:16:54,688 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 18:16:54,688 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [817036964]
[2023-12-25 18:16:54,688 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [817036964] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 18:16:54,689 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 18:16:54,689 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2023-12-25 18:16:54,689 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1448163811]
[2023-12-25 18:16:54,690 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 18:16:54,696 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-12-25 18:16:54,696 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 18:16:54,704 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-12-25 18:16:54,704 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-12-25 18:16:54,706 INFO  L87              Difference]: Start difference. First operand 14382 states and 23968 transitions. Second operand  has 4 states, 4 states have (on average 2389.5) internal successors, (9558), 3 states have internal predecessors, (9558), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 18:17:00,365 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 18:17:00,365 INFO  L93              Difference]: Finished difference Result 27650 states and 46074 transitions.
[2023-12-25 18:17:00,366 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-12-25 18:17:00,368 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 2389.5) internal successors, (9558), 3 states have internal predecessors, (9558), 0 states have call successors, (0), 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 9558
[2023-12-25 18:17:00,368 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 18:17:00,380 INFO  L225             Difference]: With dead ends: 27650
[2023-12-25 18:17:00,380 INFO  L226             Difference]: Without dead ends: 14400
[2023-12-25 18:17:00,389 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 9558 GetRequests, 9555 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 18:17:00,390 INFO  L413           NwaCegarLoop]: 17834 mSDtfsCounter, 44215 mSDsluCounter, 649 mSDsCounter, 0 mSdLazyCounter, 7408 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44215 SdHoareTripleChecker+Valid, 18483 SdHoareTripleChecker+Invalid, 7408 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7408 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.4s IncrementalHoareTripleChecker+Time
[2023-12-25 18:17:00,390 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [44215 Valid, 18483 Invalid, 7408 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 7408 Invalid, 0 Unknown, 0 Unchecked, 5.4s Time]
[2023-12-25 18:17:00,405 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14400 states.
[2023-12-25 18:17:00,513 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14400 to 14382.
[2023-12-25 18:17:00,528 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 14382 states, 14381 states have (on average 1.6665739517418816) internal successors, (23967), 14381 states have internal predecessors, (23967), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 18:17:00,546 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 14382 states to 14382 states and 23967 transitions.
[2023-12-25 18:17:00,546 INFO  L78                 Accepts]: Start accepts. Automaton has 14382 states and 23967 transitions. Word has length 9558
[2023-12-25 18:17:00,547 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 18:17:00,547 INFO  L495      AbstractCegarLoop]: Abstraction has 14382 states and 23967 transitions.
[2023-12-25 18:17:00,549 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 2389.5) internal successors, (9558), 3 states have internal predecessors, (9558), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 18:17:00,549 INFO  L276                IsEmpty]: Start isEmpty. Operand 14382 states and 23967 transitions.
[2023-12-25 18:17:01,092 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 9560
[2023-12-25 18:17:01,092 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 18:17:01,095 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-12-25 18:17:01,220 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0
[2023-12-25 18:17:01,321 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 18:17:01,321 INFO  L420      AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 18:17:01,322 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 18:17:01,324 INFO  L85        PathProgramCache]: Analyzing trace with hash 2021351999, now seen corresponding path program 1 times
[2023-12-25 18:17:01,324 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 18:17:01,324 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2015262375]
[2023-12-25 18:17:01,325 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 18:17:01,325 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 18:17:01,943 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 18:17:01,944 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1747660476]
[2023-12-25 18:17:01,946 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 18:17:01,946 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 18:17:01,946 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 18:17:01,947 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 18:17:01,947 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 18:17:11,702 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 18:17:11,995 INFO  L262         TraceCheckSpWp]: Trace formula consists of 42149 conjuncts, 12 conjunts are in the unsatisfiable core
[2023-12-25 18:17:12,176 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 18:17:13,749 INFO  L134       CoverageAnalysis]: Checked inductivity of 424 backedges. 424 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-25 18:17:13,750 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 18:17:13,750 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 18:17:13,750 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2015262375]
[2023-12-25 18:17:13,750 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 18:17:13,750 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1747660476]
[2023-12-25 18:17:13,750 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1747660476] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 18:17:13,750 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 18:17:13,751 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2023-12-25 18:17:13,751 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1916690115]
[2023-12-25 18:17:13,751 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 18:17:13,758 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-12-25 18:17:13,758 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 18:17:13,764 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-12-25 18:17:13,765 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-12-25 18:17:13,767 INFO  L87              Difference]: Start difference. First operand 14382 states and 23967 transitions. Second operand  has 4 states, 4 states have (on average 2389.75) internal successors, (9559), 3 states have internal predecessors, (9559), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 18:17:19,318 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 18:17:19,318 INFO  L93              Difference]: Finished difference Result 27657 states and 46083 transitions.
[2023-12-25 18:17:19,318 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-12-25 18:17:19,320 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 2389.75) internal successors, (9559), 3 states have internal predecessors, (9559), 0 states have call successors, (0), 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 9559
[2023-12-25 18:17:19,321 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 18:17:19,333 INFO  L225             Difference]: With dead ends: 27657
[2023-12-25 18:17:19,334 INFO  L226             Difference]: Without dead ends: 14407
[2023-12-25 18:17:19,345 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 9559 GetRequests, 9556 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 18:17:19,345 INFO  L413           NwaCegarLoop]: 17843 mSDtfsCounter, 44208 mSDsluCounter, 659 mSDsCounter, 0 mSdLazyCounter, 7410 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44208 SdHoareTripleChecker+Valid, 18502 SdHoareTripleChecker+Invalid, 7410 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7410 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.3s IncrementalHoareTripleChecker+Time
[2023-12-25 18:17:19,345 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [44208 Valid, 18502 Invalid, 7410 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 7410 Invalid, 0 Unknown, 0 Unchecked, 5.3s Time]
[2023-12-25 18:17:19,361 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14407 states.
[2023-12-25 18:17:19,561 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14407 to 14382.
[2023-12-25 18:17:19,574 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 14382 states, 14381 states have (on average 1.6665044155482929) internal successors, (23966), 14381 states have internal predecessors, (23966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 18:17:19,590 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 14382 states to 14382 states and 23966 transitions.
[2023-12-25 18:17:19,590 INFO  L78                 Accepts]: Start accepts. Automaton has 14382 states and 23966 transitions. Word has length 9559
[2023-12-25 18:17:19,591 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 18:17:19,591 INFO  L495      AbstractCegarLoop]: Abstraction has 14382 states and 23966 transitions.
[2023-12-25 18:17:19,593 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 2389.75) internal successors, (9559), 3 states have internal predecessors, (9559), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 18:17:19,593 INFO  L276                IsEmpty]: Start isEmpty. Operand 14382 states and 23966 transitions.
[2023-12-25 18:17:20,088 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 9561
[2023-12-25 18:17:20,088 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 18:17:20,091 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-12-25 18:17:20,197 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 18:17:20,291 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 18:17:20,291 INFO  L420      AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 18:17:20,292 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 18:17:20,293 INFO  L85        PathProgramCache]: Analyzing trace with hash -1162364808, now seen corresponding path program 1 times
[2023-12-25 18:17:20,293 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 18:17:20,293 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [528096836]
[2023-12-25 18:17:20,294 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 18:17:20,294 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 18:17:20,903 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 18:17:20,904 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2097960979]
[2023-12-25 18:17:20,906 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 18:17:20,906 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 18:17:20,906 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 18:17:20,907 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 18:17:20,909 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 18:17:31,641 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 18:17:31,992 INFO  L262         TraceCheckSpWp]: Trace formula consists of 42150 conjuncts, 12 conjunts are in the unsatisfiable core
[2023-12-25 18:17:32,134 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 18:17:34,025 INFO  L134       CoverageAnalysis]: Checked inductivity of 424 backedges. 424 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-25 18:17:34,026 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 18:17:34,026 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 18:17:34,026 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [528096836]
[2023-12-25 18:17:34,026 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 18:17:34,026 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2097960979]
[2023-12-25 18:17:34,026 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [2097960979] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 18:17:34,026 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 18:17:34,027 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2023-12-25 18:17:34,029 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [244004208]
[2023-12-25 18:17:34,029 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 18:17:34,037 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-12-25 18:17:34,037 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 18:17:34,045 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-12-25 18:17:34,045 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-12-25 18:17:34,048 INFO  L87              Difference]: Start difference. First operand 14382 states and 23966 transitions. Second operand  has 4 states, 4 states have (on average 2390.0) internal successors, (9560), 3 states have internal predecessors, (9560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 18:17:40,282 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 18:17:40,282 INFO  L93              Difference]: Finished difference Result 27661 states and 46087 transitions.
[2023-12-25 18:17:40,283 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-12-25 18:17:40,285 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 2390.0) internal successors, (9560), 3 states have internal predecessors, (9560), 0 states have call successors, (0), 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 9560
[2023-12-25 18:17:40,286 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 18:17:40,303 INFO  L225             Difference]: With dead ends: 27661
[2023-12-25 18:17:40,303 INFO  L226             Difference]: Without dead ends: 14411
[2023-12-25 18:17:40,319 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 9560 GetRequests, 9557 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 18:17:40,320 INFO  L413           NwaCegarLoop]: 17847 mSDtfsCounter, 44203 mSDsluCounter, 664 mSDsCounter, 0 mSdLazyCounter, 7412 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44203 SdHoareTripleChecker+Valid, 18511 SdHoareTripleChecker+Invalid, 7412 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7412 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.9s IncrementalHoareTripleChecker+Time
[2023-12-25 18:17:40,320 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [44203 Valid, 18511 Invalid, 7412 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 7412 Invalid, 0 Unknown, 0 Unchecked, 5.9s Time]
[2023-12-25 18:17:40,338 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14411 states.
[2023-12-25 18:17:40,549 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14411 to 14382.
[2023-12-25 18:17:40,566 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 14382 states, 14381 states have (on average 1.6664348793547041) internal successors, (23965), 14381 states have internal predecessors, (23965), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 18:17:40,584 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 14382 states to 14382 states and 23965 transitions.
[2023-12-25 18:17:40,585 INFO  L78                 Accepts]: Start accepts. Automaton has 14382 states and 23965 transitions. Word has length 9560
[2023-12-25 18:17:40,585 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 18:17:40,585 INFO  L495      AbstractCegarLoop]: Abstraction has 14382 states and 23965 transitions.
[2023-12-25 18:17:40,588 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 2390.0) internal successors, (9560), 3 states have internal predecessors, (9560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 18:17:40,588 INFO  L276                IsEmpty]: Start isEmpty. Operand 14382 states and 23965 transitions.
[2023-12-25 18:17:41,245 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 9562
[2023-12-25 18:17:41,245 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 18:17:41,248 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-12-25 18:17:41,415 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0
[2023-12-25 18:17:41,482 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 18:17:41,482 INFO  L420      AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 18:17:41,484 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 18:17:41,485 INFO  L85        PathProgramCache]: Analyzing trace with hash -327166572, now seen corresponding path program 1 times
[2023-12-25 18:17:41,485 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 18:17:41,485 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [309421604]
[2023-12-25 18:17:41,486 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 18:17:41,486 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 18:17:42,325 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 18:17:42,325 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [215666520]
[2023-12-25 18:17:42,327 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 18:17:42,327 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 18:17:42,327 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 18:17:42,348 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 18:17:42,372 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 18:17:55,495 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 18:17:56,160 INFO  L262         TraceCheckSpWp]: Trace formula consists of 42151 conjuncts, 12 conjunts are in the unsatisfiable core
[2023-12-25 18:17:56,422 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 18:17:58,968 INFO  L134       CoverageAnalysis]: Checked inductivity of 424 backedges. 424 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-25 18:17:58,968 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 18:17:58,969 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 18:17:58,969 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [309421604]
[2023-12-25 18:17:58,969 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 18:17:58,969 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [215666520]
[2023-12-25 18:17:58,969 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [215666520] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 18:17:58,969 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 18:17:58,970 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2023-12-25 18:17:58,970 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1500828104]
[2023-12-25 18:17:58,970 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 18:17:59,046 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-12-25 18:17:59,047 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 18:17:59,052 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-12-25 18:17:59,052 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-12-25 18:17:59,054 INFO  L87              Difference]: Start difference. First operand 14382 states and 23965 transitions. Second operand  has 4 states, 4 states have (on average 2390.25) internal successors, (9561), 3 states have internal predecessors, (9561), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 18:18:05,277 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 18:18:05,277 INFO  L93              Difference]: Finished difference Result 27668 states and 46096 transitions.
[2023-12-25 18:18:05,277 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-12-25 18:18:05,279 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 2390.25) internal successors, (9561), 3 states have internal predecessors, (9561), 0 states have call successors, (0), 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 9561
[2023-12-25 18:18:05,280 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 18:18:05,294 INFO  L225             Difference]: With dead ends: 27668
[2023-12-25 18:18:05,312 INFO  L226             Difference]: Without dead ends: 14418
[2023-12-25 18:18:05,322 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 9561 GetRequests, 9558 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 18:18:05,322 INFO  L413           NwaCegarLoop]: 17856 mSDtfsCounter, 44196 mSDsluCounter, 674 mSDsCounter, 0 mSdLazyCounter, 7414 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44196 SdHoareTripleChecker+Valid, 18530 SdHoareTripleChecker+Invalid, 7414 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7414 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.9s IncrementalHoareTripleChecker+Time
[2023-12-25 18:18:05,323 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [44196 Valid, 18530 Invalid, 7414 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 7414 Invalid, 0 Unknown, 0 Unchecked, 5.9s Time]
[2023-12-25 18:18:05,340 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14418 states.
[2023-12-25 18:18:05,550 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14418 to 14382.
[2023-12-25 18:18:05,568 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 14382 states, 14381 states have (on average 1.6663653431611154) internal successors, (23964), 14381 states have internal predecessors, (23964), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 18:18:05,586 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 14382 states to 14382 states and 23964 transitions.
[2023-12-25 18:18:05,586 INFO  L78                 Accepts]: Start accepts. Automaton has 14382 states and 23964 transitions. Word has length 9561
[2023-12-25 18:18:05,587 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 18:18:05,587 INFO  L495      AbstractCegarLoop]: Abstraction has 14382 states and 23964 transitions.
[2023-12-25 18:18:05,589 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 2390.25) internal successors, (9561), 3 states have internal predecessors, (9561), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 18:18:05,589 INFO  L276                IsEmpty]: Start isEmpty. Operand 14382 states and 23964 transitions.
[2023-12-25 18:18:06,250 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 9563
[2023-12-25 18:18:06,250 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 18:18:06,253 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-12-25 18:18:06,392 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 18:18:06,476 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11
[2023-12-25 18:18:06,477 INFO  L420      AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 18:18:06,477 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 18:18:06,478 INFO  L85        PathProgramCache]: Analyzing trace with hash 918650183, now seen corresponding path program 1 times
[2023-12-25 18:18:06,478 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 18:18:06,478 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1065605517]
[2023-12-25 18:18:06,479 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 18:18:06,479 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 18:18:07,451 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 18:18:07,452 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1628356696]
[2023-12-25 18:18:07,454 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 18:18:07,454 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 18:18:07,454 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 18:18:07,469 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 18:18:07,495 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 18:18:18,431 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 18:18:18,810 INFO  L262         TraceCheckSpWp]: Trace formula consists of 42152 conjuncts, 12 conjunts are in the unsatisfiable core
[2023-12-25 18:18:19,090 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 18:18:21,066 INFO  L134       CoverageAnalysis]: Checked inductivity of 424 backedges. 424 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-25 18:18:21,067 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 18:18:21,067 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 18:18:21,067 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1065605517]
[2023-12-25 18:18:21,068 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 18:18:21,068 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1628356696]
[2023-12-25 18:18:21,068 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1628356696] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 18:18:21,068 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 18:18:21,069 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2023-12-25 18:18:21,069 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [588823250]
[2023-12-25 18:18:21,069 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 18:18:21,074 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-12-25 18:18:21,074 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 18:18:21,079 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-12-25 18:18:21,079 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-12-25 18:18:21,081 INFO  L87              Difference]: Start difference. First operand 14382 states and 23964 transitions. Second operand  has 4 states, 4 states have (on average 2390.5) internal successors, (9562), 3 states have internal predecessors, (9562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 18:18:27,410 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 18:18:27,411 INFO  L93              Difference]: Finished difference Result 27672 states and 46100 transitions.
[2023-12-25 18:18:27,411 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-12-25 18:18:27,413 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 2390.5) internal successors, (9562), 3 states have internal predecessors, (9562), 0 states have call successors, (0), 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 9562
[2023-12-25 18:18:27,414 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 18:18:27,427 INFO  L225             Difference]: With dead ends: 27672
[2023-12-25 18:18:27,427 INFO  L226             Difference]: Without dead ends: 14422
[2023-12-25 18:18:27,434 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 9562 GetRequests, 9559 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2023-12-25 18:18:27,435 INFO  L413           NwaCegarLoop]: 17860 mSDtfsCounter, 44191 mSDsluCounter, 679 mSDsCounter, 0 mSdLazyCounter, 7416 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44191 SdHoareTripleChecker+Valid, 18539 SdHoareTripleChecker+Invalid, 7416 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7416 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.0s IncrementalHoareTripleChecker+Time
[2023-12-25 18:18:27,436 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [44191 Valid, 18539 Invalid, 7416 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 7416 Invalid, 0 Unknown, 0 Unchecked, 6.0s Time]
[2023-12-25 18:18:27,451 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14422 states.
[2023-12-25 18:18:27,565 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14422 to 14382.
[2023-12-25 18:18:27,582 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 14382 states, 14381 states have (on average 1.6662958069675267) internal successors, (23963), 14381 states have internal predecessors, (23963), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 18:18:27,601 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 14382 states to 14382 states and 23963 transitions.
[2023-12-25 18:18:27,601 INFO  L78                 Accepts]: Start accepts. Automaton has 14382 states and 23963 transitions. Word has length 9562
[2023-12-25 18:18:27,606 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 18:18:27,606 INFO  L495      AbstractCegarLoop]: Abstraction has 14382 states and 23963 transitions.
[2023-12-25 18:18:27,609 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 2390.5) internal successors, (9562), 3 states have internal predecessors, (9562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 18:18:27,609 INFO  L276                IsEmpty]: Start isEmpty. Operand 14382 states and 23963 transitions.
[2023-12-25 18:18:28,187 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 9564
[2023-12-25 18:18:28,188 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 18:18:28,190 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-12-25 18:18:28,330 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0
[2023-12-25 18:18:28,416 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12
[2023-12-25 18:18:28,417 INFO  L420      AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 18:18:28,417 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 18:18:28,419 INFO  L85        PathProgramCache]: Analyzing trace with hash 2015167465, now seen corresponding path program 1 times
[2023-12-25 18:18:28,419 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 18:18:28,419 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [442140721]
[2023-12-25 18:18:28,420 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 18:18:28,420 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 18:18:29,248 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 18:18:29,248 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2050089198]
[2023-12-25 18:18:29,250 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 18:18:29,250 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 18:18:29,251 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 18:18:29,252 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 18:18:29,290 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 18:18:40,636 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 18:18:41,008 INFO  L262         TraceCheckSpWp]: Trace formula consists of 42153 conjuncts, 12 conjunts are in the unsatisfiable core
[2023-12-25 18:18:41,322 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 18:18:43,187 INFO  L134       CoverageAnalysis]: Checked inductivity of 424 backedges. 424 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-25 18:18:43,188 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 18:18:43,188 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 18:18:43,188 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [442140721]
[2023-12-25 18:18:43,188 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 18:18:43,188 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2050089198]
[2023-12-25 18:18:43,188 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [2050089198] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 18:18:43,188 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 18:18:43,189 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2023-12-25 18:18:43,189 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [967383582]
[2023-12-25 18:18:43,189 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 18:18:43,194 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-12-25 18:18:43,194 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 18:18:43,216 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-12-25 18:18:43,217 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-12-25 18:18:43,220 INFO  L87              Difference]: Start difference. First operand 14382 states and 23963 transitions. Second operand  has 4 states, 4 states have (on average 2390.75) internal successors, (9563), 3 states have internal predecessors, (9563), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 18:18:49,660 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 18:18:49,660 INFO  L93              Difference]: Finished difference Result 27679 states and 46109 transitions.
[2023-12-25 18:18:49,660 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-12-25 18:18:49,663 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 2390.75) internal successors, (9563), 3 states have internal predecessors, (9563), 0 states have call successors, (0), 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 9563
[2023-12-25 18:18:49,663 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 18:18:49,680 INFO  L225             Difference]: With dead ends: 27679
[2023-12-25 18:18:49,680 INFO  L226             Difference]: Without dead ends: 14429
[2023-12-25 18:18:49,689 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 9563 GetRequests, 9560 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 18:18:49,690 INFO  L413           NwaCegarLoop]: 17869 mSDtfsCounter, 44184 mSDsluCounter, 689 mSDsCounter, 0 mSdLazyCounter, 7418 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44184 SdHoareTripleChecker+Valid, 18558 SdHoareTripleChecker+Invalid, 7418 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7418 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.2s IncrementalHoareTripleChecker+Time
[2023-12-25 18:18:49,694 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [44184 Valid, 18558 Invalid, 7418 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 7418 Invalid, 0 Unknown, 0 Unchecked, 6.2s Time]
[2023-12-25 18:18:49,710 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14429 states.
[2023-12-25 18:18:49,835 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14429 to 14382.
[2023-12-25 18:18:49,852 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 14382 states, 14381 states have (on average 1.666226270773938) internal successors, (23962), 14381 states have internal predecessors, (23962), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 18:18:49,870 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 14382 states to 14382 states and 23962 transitions.
[2023-12-25 18:18:49,870 INFO  L78                 Accepts]: Start accepts. Automaton has 14382 states and 23962 transitions. Word has length 9563
[2023-12-25 18:18:49,970 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 18:18:49,970 INFO  L495      AbstractCegarLoop]: Abstraction has 14382 states and 23962 transitions.
[2023-12-25 18:18:49,973 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 2390.75) internal successors, (9563), 3 states have internal predecessors, (9563), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 18:18:49,973 INFO  L276                IsEmpty]: Start isEmpty. Operand 14382 states and 23962 transitions.
[2023-12-25 18:18:50,550 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 9565
[2023-12-25 18:18:50,552 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 18:18:50,570 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-12-25 18:18:50,723 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 18:18:50,792 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13
[2023-12-25 18:18:50,793 INFO  L420      AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 18:18:50,793 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 18:18:50,795 INFO  L85        PathProgramCache]: Analyzing trace with hash -410822122, now seen corresponding path program 1 times
[2023-12-25 18:18:50,795 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 18:18:50,795 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2070320725]
[2023-12-25 18:18:50,796 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 18:18:50,796 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 18:18:51,762 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 18:18:51,762 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1211623872]
[2023-12-25 18:18:51,765 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 18:18:51,765 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 18:18:51,765 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 18:18:51,780 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 18:18:51,805 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 18:19:03,052 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 18:19:03,419 INFO  L262         TraceCheckSpWp]: Trace formula consists of 42154 conjuncts, 12 conjunts are in the unsatisfiable core
[2023-12-25 18:19:03,644 INFO  L285         TraceCheckSpWp]: Computing forward predicates...