/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation true -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.pgm_protocol.3.prop6-func-interl.c


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


This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m
[2023-12-25 20:39:11,807 INFO  L188        SettingsManager]: Resetting all preferences to default values...
[2023-12-25 20:39:11,894 INFO  L114        SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf
[2023-12-25 20:39:11,897 WARN  L101        SettingsManager]: Preference file contains the following unknown settings:
[2023-12-25 20:39:11,897 WARN  L103        SettingsManager]:   * de.uni_freiburg.informatik.ultimate.core.Log level for class
[2023-12-25 20:39:11,909 INFO  L130        SettingsManager]: Preferences different from defaults after loading the file:
[2023-12-25 20:39:11,909 INFO  L151        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2023-12-25 20:39:11,909 INFO  L153        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2023-12-25 20:39:11,910 INFO  L151        SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults:
[2023-12-25 20:39:11,910 INFO  L153        SettingsManager]:  * Use memory slicer=true
[2023-12-25 20:39:11,910 INFO  L151        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2023-12-25 20:39:11,911 INFO  L153        SettingsManager]:  * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2023-12-25 20:39:11,911 INFO  L151        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2023-12-25 20:39:11,911 INFO  L153        SettingsManager]:  * Create parallel compositions if possible=false
[2023-12-25 20:39:11,911 INFO  L153        SettingsManager]:  * Use SBE=true
[2023-12-25 20:39:11,912 INFO  L151        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2023-12-25 20:39:11,912 INFO  L153        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2023-12-25 20:39:11,912 INFO  L153        SettingsManager]:  * Overapproximate operations on floating types=true
[2023-12-25 20:39:11,912 INFO  L153        SettingsManager]:  * Check division by zero=IGNORE
[2023-12-25 20:39:11,913 INFO  L153        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2023-12-25 20:39:11,913 INFO  L153        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2023-12-25 20:39:11,916 INFO  L153        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2023-12-25 20:39:11,916 INFO  L153        SettingsManager]:  * Allow undefined functions=false
[2023-12-25 20:39:11,916 INFO  L153        SettingsManager]:  * Check if freed pointer was valid=false
[2023-12-25 20:39:11,916 INFO  L153        SettingsManager]:  * Use constant arrays=true
[2023-12-25 20:39:11,917 INFO  L151        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2023-12-25 20:39:11,917 INFO  L153        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2023-12-25 20:39:11,917 INFO  L153        SettingsManager]:  * Only consider context switches at boundaries of atomic blocks=true
[2023-12-25 20:39:11,917 INFO  L153        SettingsManager]:  * SMT solver=External_DefaultMode
[2023-12-25 20:39:11,917 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2023-12-25 20:39:11,918 INFO  L151        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2023-12-25 20:39:11,918 INFO  L153        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2023-12-25 20:39:11,918 INFO  L153        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopHeads
[2023-12-25 20:39:11,918 INFO  L153        SettingsManager]:  * Trace refinement strategy=CAMEL
[2023-12-25 20:39:11,918 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2023-12-25 20:39:11,918 INFO  L153        SettingsManager]:  * Apply one-shot large block encoding in concurrent analysis=false
[2023-12-25 20:39:11,919 INFO  L153        SettingsManager]:  * Automaton type used in concurrency analysis=PETRI_NET
[2023-12-25 20:39:11,919 INFO  L153        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2023-12-25 20:39:11,919 INFO  L153        SettingsManager]:  * Order on configurations for Petri net unfoldings=DBO
[2023-12-25 20:39:11,919 INFO  L153        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2023-12-25 20:39:11,919 INFO  L153        SettingsManager]:  * Looper check in Petri net analysis=SEMANTIC
WARNING: An illegal reflective access operation has occurred
WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int)
WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true
[2023-12-25 20:39:12,100 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2023-12-25 20:39:12,121 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2023-12-25 20:39:12,122 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2023-12-25 20:39:12,123 INFO  L270        PluginConnector]: Initializing CDTParser...
[2023-12-25 20:39:12,123 INFO  L274        PluginConnector]: CDTParser initialized
[2023-12-25 20:39:12,124 INFO  L431   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.pgm_protocol.3.prop6-func-interl.c
[2023-12-25 20:39:13,239 INFO  L533              CDTParser]: Created temporary CDT project at NULL
[2023-12-25 20:39:13,606 INFO  L384              CDTParser]: Found 1 translation units.
[2023-12-25 20:39:13,607 INFO  L180              CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.pgm_protocol.3.prop6-func-interl.c
[2023-12-25 20:39:13,643 INFO  L427              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2488bb6e8/225cc4e945764675bb4c6abbc572f197/FLAG36c9d2212
[2023-12-25 20:39:13,656 INFO  L435              CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2488bb6e8/225cc4e945764675bb4c6abbc572f197
[2023-12-25 20:39:13,658 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2023-12-25 20:39:13,659 INFO  L133        ToolchainWalker]: Walking toolchain with 5 elements.
[2023-12-25 20:39:13,661 INFO  L112        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2023-12-25 20:39:13,662 INFO  L270        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2023-12-25 20:39:13,665 INFO  L274        PluginConnector]: CACSL2BoogieTranslator initialized
[2023-12-25 20:39:13,666 INFO  L184        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.12 08:39:13" (1/1) ...
[2023-12-25 20:39:13,666 INFO  L204        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@476db53d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 08:39:13, skipping insertion in model container
[2023-12-25 20:39:13,666 INFO  L184        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.12 08:39:13" (1/1) ...
[2023-12-25 20:39:13,808 INFO  L177         MainTranslator]: Built tables and reachable declarations
[2023-12-25 20:39:14,030 WARN  L239   ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.pgm_protocol.3.prop6-func-interl.c[1179,1192]
[2023-12-25 20:39:14,903 INFO  L209          PostProcessor]: Analyzing one entry point: main
[2023-12-25 20:39:14,910 INFO  L202         MainTranslator]: Completed pre-run
[2023-12-25 20:39:14,918 WARN  L239   ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.pgm_protocol.3.prop6-func-interl.c[1179,1192]
[2023-12-25 20:39:15,781 INFO  L209          PostProcessor]: Analyzing one entry point: main
[2023-12-25 20:39:15,803 INFO  L206         MainTranslator]: Completed translation
[2023-12-25 20:39:15,803 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 08:39:15 WrapperNode
[2023-12-25 20:39:15,804 INFO  L131        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2023-12-25 20:39:15,804 INFO  L112        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2023-12-25 20:39:15,804 INFO  L270        PluginConnector]: Initializing Boogie Procedure Inliner...
[2023-12-25 20:39:15,804 INFO  L274        PluginConnector]: Boogie Procedure Inliner initialized
[2023-12-25 20:39:15,814 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 08:39:15" (1/1) ...
[2023-12-25 20:39:16,197 INFO  L184        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 08:39:15" (1/1) ...
[2023-12-25 20:39:19,771 INFO  L138                Inliner]: procedures = 17, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 49260
[2023-12-25 20:39:19,772 INFO  L131        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2023-12-25 20:39:19,772 INFO  L112        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2023-12-25 20:39:19,773 INFO  L270        PluginConnector]: Initializing Boogie Preprocessor...
[2023-12-25 20:39:19,773 INFO  L274        PluginConnector]: Boogie Preprocessor initialized
[2023-12-25 20:39:19,782 INFO  L184        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 08:39:15" (1/1) ...
[2023-12-25 20:39:19,782 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 08:39:15" (1/1) ...
[2023-12-25 20:39:21,086 INFO  L184        PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 08:39:15" (1/1) ...
[2023-12-25 20:39:21,446 INFO  L175           MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0].
[2023-12-25 20:39:21,446 INFO  L184        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 08:39:15" (1/1) ...
[2023-12-25 20:39:21,446 INFO  L184        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 08:39:15" (1/1) ...
[2023-12-25 20:39:22,809 INFO  L184        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 08:39:15" (1/1) ...
[2023-12-25 20:39:23,095 INFO  L184        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 08:39:15" (1/1) ...
[2023-12-25 20:39:23,268 INFO  L184        PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 08:39:15" (1/1) ...
[2023-12-25 20:39:23,391 INFO  L184        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 08:39:15" (1/1) ...
[2023-12-25 20:39:24,210 INFO  L131        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2023-12-25 20:39:24,211 INFO  L112        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2023-12-25 20:39:24,211 INFO  L270        PluginConnector]: Initializing RCFGBuilder...
[2023-12-25 20:39:24,211 INFO  L274        PluginConnector]: RCFGBuilder initialized
[2023-12-25 20:39:24,211 INFO  L184        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 08:39:15" (1/1) ...
[2023-12-25 20:39:24,259 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2023-12-25 20:39:24,284 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 20:39:24,349 INFO  L229       MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null)
[2023-12-25 20:39:24,363 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process
[2023-12-25 20:39:24,385 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2023-12-25 20:39:24,386 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int#0
[2023-12-25 20:39:24,386 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2023-12-25 20:39:24,386 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2023-12-25 20:39:26,035 INFO  L241             CfgBuilder]: Building ICFG
[2023-12-25 20:39:26,037 INFO  L267             CfgBuilder]: Building CFG for each procedure with an implementation
[2023-12-25 20:39:43,218 INFO  L282             CfgBuilder]: Performing block encoding
[2023-12-25 20:39:43,748 INFO  L304             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2023-12-25 20:39:43,748 INFO  L309             CfgBuilder]: Removed 1 assume(true) statements.
[2023-12-25 20:39:43,748 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.12 08:39:43 BoogieIcfgContainer
[2023-12-25 20:39:43,750 INFO  L131        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2023-12-25 20:39:43,752 INFO  L112        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2023-12-25 20:39:43,752 INFO  L270        PluginConnector]: Initializing TraceAbstraction...
[2023-12-25 20:39:43,755 INFO  L274        PluginConnector]: TraceAbstraction initialized
[2023-12-25 20:39:43,755 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.12 08:39:13" (1/3) ...
[2023-12-25 20:39:43,756 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42bfdee5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.12 08:39:43, skipping insertion in model container
[2023-12-25 20:39:43,756 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 08:39:15" (2/3) ...
[2023-12-25 20:39:43,757 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42bfdee5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.12 08:39:43, skipping insertion in model container
[2023-12-25 20:39:43,757 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.12 08:39:43" (3/3) ...
[2023-12-25 20:39:43,758 INFO  L112   eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.pgm_protocol.3.prop6-func-interl.c
[2023-12-25 20:39:43,769 INFO  L204   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2023-12-25 20:39:43,770 INFO  L163   ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2023-12-25 20:39:43,911 INFO  L356      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2023-12-25 20:39:43,917 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;@5f3ef554, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2023-12-25 20:39:43,917 INFO  L358      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2023-12-25 20:39:43,943 INFO  L276                IsEmpty]: Start isEmpty. Operand  has 10810 states, 10808 states have (on average 1.6672834937083643) internal successors, (18020), 10809 states have internal predecessors, (18020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 20:39:43,970 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 485
[2023-12-25 20:39:43,971 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 20:39:43,972 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]
[2023-12-25 20:39:43,972 INFO  L420      AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 20:39:43,977 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 20:39:43,978 INFO  L85        PathProgramCache]: Analyzing trace with hash -541906653, now seen corresponding path program 1 times
[2023-12-25 20:39:43,984 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 20:39:43,985 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [186067809]
[2023-12-25 20:39:43,985 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 20:39:43,985 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 20:39:44,376 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 20:39:45,392 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-25 20:39:45,393 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 20:39:45,393 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [186067809]
[2023-12-25 20:39:45,393 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [186067809] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 20:39:45,394 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 20:39:45,394 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-12-25 20:39:45,395 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [664337230]
[2023-12-25 20:39:45,395 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 20:39:45,399 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-12-25 20:39:45,399 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 20:39:45,417 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-12-25 20:39:45,417 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-12-25 20:39:45,439 INFO  L87              Difference]: Start difference. First operand  has 10810 states, 10808 states have (on average 1.6672834937083643) internal successors, (18020), 10809 states have internal predecessors, (18020), 0 states have call successors, (0), 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 121.0) internal successors, (484), 4 states have internal predecessors, (484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 20:39:45,987 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 20:39:45,987 INFO  L93              Difference]: Finished difference Result 21094 states and 35166 transitions.
[2023-12-25 20:39:46,000 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-12-25 20:39:46,002 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 121.0) internal successors, (484), 4 states have internal predecessors, (484), 0 states have call successors, (0), 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 484
[2023-12-25 20:39:46,003 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 20:39:46,041 INFO  L225             Difference]: With dead ends: 21094
[2023-12-25 20:39:46,041 INFO  L226             Difference]: Without dead ends: 10810
[2023-12-25 20:39:46,051 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-12-25 20:39:46,053 INFO  L413           NwaCegarLoop]: 18013 mSDtfsCounter, 1 mSDsluCounter, 36021 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 54034 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-12-25 20:39:46,054 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 54034 Invalid, 13 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-12-25 20:39:46,078 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 10810 states.
[2023-12-25 20:39:46,233 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 10810 to 10810.
[2023-12-25 20:39:46,261 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 10810 states, 10809 states have (on average 1.6669442131557035) internal successors, (18018), 10809 states have internal predecessors, (18018), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 20:39:46,282 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 10810 states to 10810 states and 18018 transitions.
[2023-12-25 20:39:46,283 INFO  L78                 Accepts]: Start accepts. Automaton has 10810 states and 18018 transitions. Word has length 484
[2023-12-25 20:39:46,285 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 20:39:46,285 INFO  L495      AbstractCegarLoop]: Abstraction has 10810 states and 18018 transitions.
[2023-12-25 20:39:46,286 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 121.0) internal successors, (484), 4 states have internal predecessors, (484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 20:39:46,286 INFO  L276                IsEmpty]: Start isEmpty. Operand 10810 states and 18018 transitions.
[2023-12-25 20:39:46,290 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 486
[2023-12-25 20:39:46,291 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 20:39:46,291 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]
[2023-12-25 20:39:46,291 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2023-12-25 20:39:46,291 INFO  L420      AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 20:39:46,292 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 20:39:46,292 INFO  L85        PathProgramCache]: Analyzing trace with hash 382490769, now seen corresponding path program 1 times
[2023-12-25 20:39:46,292 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 20:39:46,292 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2045881802]
[2023-12-25 20:39:46,293 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 20:39:46,293 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 20:39:46,501 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 20:39:47,025 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-25 20:39:47,026 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 20:39:47,026 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2045881802]
[2023-12-25 20:39:47,027 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2045881802] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 20:39:47,027 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 20:39:47,027 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-12-25 20:39:47,027 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [500326917]
[2023-12-25 20:39:47,027 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 20:39:47,030 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-12-25 20:39:47,033 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 20:39:47,033 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-12-25 20:39:47,034 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-12-25 20:39:47,034 INFO  L87              Difference]: Start difference. First operand 10810 states and 18018 transitions. Second operand  has 4 states, 4 states have (on average 121.25) internal successors, (485), 4 states have internal predecessors, (485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 20:39:47,320 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 20:39:47,320 INFO  L93              Difference]: Finished difference Result 21097 states and 35164 transitions.
[2023-12-25 20:39:47,321 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-12-25 20:39:47,321 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 121.25) internal successors, (485), 4 states have internal predecessors, (485), 0 states have call successors, (0), 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 485
[2023-12-25 20:39:47,322 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 20:39:47,348 INFO  L225             Difference]: With dead ends: 21097
[2023-12-25 20:39:47,348 INFO  L226             Difference]: Without dead ends: 10813
[2023-12-25 20:39:47,360 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-12-25 20:39:47,362 INFO  L413           NwaCegarLoop]: 18013 mSDtfsCounter, 1 mSDsluCounter, 36019 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 54032 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-12-25 20:39:47,362 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 54032 Invalid, 15 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-12-25 20:39:47,375 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 10813 states.
[2023-12-25 20:39:47,488 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 10813 to 10812.
[2023-12-25 20:39:47,505 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 10812 states, 10811 states have (on average 1.666820830635464) internal successors, (18020), 10811 states have internal predecessors, (18020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 20:39:47,528 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 10812 states to 10812 states and 18020 transitions.
[2023-12-25 20:39:47,528 INFO  L78                 Accepts]: Start accepts. Automaton has 10812 states and 18020 transitions. Word has length 485
[2023-12-25 20:39:47,529 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 20:39:47,529 INFO  L495      AbstractCegarLoop]: Abstraction has 10812 states and 18020 transitions.
[2023-12-25 20:39:47,529 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 121.25) internal successors, (485), 4 states have internal predecessors, (485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 20:39:47,529 INFO  L276                IsEmpty]: Start isEmpty. Operand 10812 states and 18020 transitions.
[2023-12-25 20:39:47,533 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 487
[2023-12-25 20:39:47,533 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 20:39:47,534 INFO  L195           NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-12-25 20:39:47,534 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2023-12-25 20:39:47,534 INFO  L420      AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 20:39:47,540 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 20:39:47,540 INFO  L85        PathProgramCache]: Analyzing trace with hash -1238117635, now seen corresponding path program 1 times
[2023-12-25 20:39:47,540 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 20:39:47,541 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [409161132]
[2023-12-25 20:39:47,541 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 20:39:47,541 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 20:39:47,898 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 20:39:48,414 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-25 20:39:48,414 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 20:39:48,415 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [409161132]
[2023-12-25 20:39:48,415 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [409161132] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 20:39:48,415 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 20:39:48,415 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2023-12-25 20:39:48,416 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1062048943]
[2023-12-25 20:39:48,416 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 20:39:48,416 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-12-25 20:39:48,416 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 20:39:48,417 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-12-25 20:39:48,419 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2023-12-25 20:39:48,420 INFO  L87              Difference]: Start difference. First operand 10812 states and 18020 transitions. Second operand  has 5 states, 5 states have (on average 97.2) internal successors, (486), 5 states have internal predecessors, (486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 20:39:48,893 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 20:39:48,893 INFO  L93              Difference]: Finished difference Result 31384 states and 52309 transitions.
[2023-12-25 20:39:48,893 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. 
[2023-12-25 20:39:48,893 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 97.2) internal successors, (486), 5 states have internal predecessors, (486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 486
[2023-12-25 20:39:48,894 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 20:39:48,936 INFO  L225             Difference]: With dead ends: 31384
[2023-12-25 20:39:48,936 INFO  L226             Difference]: Without dead ends: 21098
[2023-12-25 20:39:48,954 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42
[2023-12-25 20:39:48,956 INFO  L413           NwaCegarLoop]: 18326 mSDtfsCounter, 34266 mSDsluCounter, 54346 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34266 SdHoareTripleChecker+Valid, 72672 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-12-25 20:39:48,956 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [34266 Valid, 72672 Invalid, 29 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-12-25 20:39:48,982 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 21098 states.
[2023-12-25 20:39:49,136 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 21098 to 10817.
[2023-12-25 20:39:49,152 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 10817 states, 10816 states have (on average 1.6666974852071006) internal successors, (18027), 10816 states have internal predecessors, (18027), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 20:39:49,168 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 10817 states to 10817 states and 18027 transitions.
[2023-12-25 20:39:49,169 INFO  L78                 Accepts]: Start accepts. Automaton has 10817 states and 18027 transitions. Word has length 486
[2023-12-25 20:39:49,169 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 20:39:49,169 INFO  L495      AbstractCegarLoop]: Abstraction has 10817 states and 18027 transitions.
[2023-12-25 20:39:49,170 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 97.2) internal successors, (486), 5 states have internal predecessors, (486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 20:39:49,172 INFO  L276                IsEmpty]: Start isEmpty. Operand 10817 states and 18027 transitions.
[2023-12-25 20:39:49,178 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 488
[2023-12-25 20:39:49,178 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 20:39:49,182 INFO  L195           NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-12-25 20:39:49,182 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2023-12-25 20:39:49,182 INFO  L420      AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 20:39:49,183 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 20:39:49,183 INFO  L85        PathProgramCache]: Analyzing trace with hash 2147221469, now seen corresponding path program 1 times
[2023-12-25 20:39:49,183 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 20:39:49,183 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1070942198]
[2023-12-25 20:39:49,183 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 20:39:49,183 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 20:39:49,394 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 20:39:49,875 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-25 20:39:49,875 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 20:39:49,875 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1070942198]
[2023-12-25 20:39:49,875 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1070942198] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 20:39:49,875 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 20:39:49,875 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2023-12-25 20:39:49,875 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [772333006]
[2023-12-25 20:39:49,875 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 20:39:49,876 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-12-25 20:39:49,876 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 20:39:49,877 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-12-25 20:39:49,877 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20
[2023-12-25 20:39:49,877 INFO  L87              Difference]: Start difference. First operand 10817 states and 18027 transitions. Second operand  has 5 states, 5 states have (on average 97.4) internal successors, (487), 5 states have internal predecessors, (487), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 20:39:50,339 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 20:39:50,339 INFO  L93              Difference]: Finished difference Result 31387 states and 52310 transitions.
[2023-12-25 20:39:50,339 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-12-25 20:39:50,340 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 97.4) internal successors, (487), 5 states have internal predecessors, (487), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 487
[2023-12-25 20:39:50,340 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 20:39:50,369 INFO  L225             Difference]: With dead ends: 31387
[2023-12-25 20:39:50,369 INFO  L226             Difference]: Without dead ends: 21096
[2023-12-25 20:39:50,385 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20
[2023-12-25 20:39:50,389 INFO  L413           NwaCegarLoop]: 18324 mSDtfsCounter, 17126 mSDsluCounter, 54641 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17126 SdHoareTripleChecker+Valid, 72965 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-12-25 20:39:50,390 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [17126 Valid, 72965 Invalid, 33 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-12-25 20:39:50,407 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 21096 states.
[2023-12-25 20:39:50,550 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 21096 to 10817.
[2023-12-25 20:39:50,566 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 10817 states, 10816 states have (on average 1.6666974852071006) internal successors, (18027), 10816 states have internal predecessors, (18027), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 20:39:50,581 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 10817 states to 10817 states and 18027 transitions.
[2023-12-25 20:39:50,581 INFO  L78                 Accepts]: Start accepts. Automaton has 10817 states and 18027 transitions. Word has length 487
[2023-12-25 20:39:50,582 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 20:39:50,582 INFO  L495      AbstractCegarLoop]: Abstraction has 10817 states and 18027 transitions.
[2023-12-25 20:39:50,583 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 97.4) internal successors, (487), 5 states have internal predecessors, (487), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 20:39:50,583 INFO  L276                IsEmpty]: Start isEmpty. Operand 10817 states and 18027 transitions.
[2023-12-25 20:39:50,587 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 489
[2023-12-25 20:39:50,588 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 20:39:50,588 INFO  L195           NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-12-25 20:39:50,588 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3
[2023-12-25 20:39:50,588 INFO  L420      AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 20:39:50,588 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 20:39:50,589 INFO  L85        PathProgramCache]: Analyzing trace with hash -948728555, now seen corresponding path program 1 times
[2023-12-25 20:39:50,589 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 20:39:50,589 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [866608566]
[2023-12-25 20:39:50,589 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 20:39:50,589 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 20:39:50,752 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 20:39:51,352 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-25 20:39:51,352 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 20:39:51,352 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [866608566]
[2023-12-25 20:39:51,352 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [866608566] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 20:39:51,353 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 20:39:51,353 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2023-12-25 20:39:51,353 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [701599956]
[2023-12-25 20:39:51,353 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 20:39:51,353 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2023-12-25 20:39:51,353 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 20:39:51,354 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2023-12-25 20:39:51,354 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30
[2023-12-25 20:39:51,354 INFO  L87              Difference]: Start difference. First operand 10817 states and 18027 transitions. Second operand  has 6 states, 6 states have (on average 81.33333333333333) internal successors, (488), 5 states have internal predecessors, (488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 20:39:51,977 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 20:39:51,978 INFO  L93              Difference]: Finished difference Result 31569 states and 52614 transitions.
[2023-12-25 20:39:51,978 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2023-12-25 20:39:51,979 INFO  L78                 Accepts]: Start accepts. Automaton has  has 6 states, 6 states have (on average 81.33333333333333) internal successors, (488), 5 states have internal predecessors, (488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 488
[2023-12-25 20:39:51,979 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 20:39:52,008 INFO  L225             Difference]: With dead ends: 31569
[2023-12-25 20:39:52,009 INFO  L226             Difference]: Without dead ends: 21278
[2023-12-25 20:39:52,023 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72
[2023-12-25 20:39:52,024 INFO  L413           NwaCegarLoop]: 18314 mSDtfsCounter, 69235 mSDsluCounter, 53139 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69235 SdHoareTripleChecker+Valid, 71453 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-12-25 20:39:52,024 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [69235 Valid, 71453 Invalid, 30 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [1 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-12-25 20:39:52,041 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 21278 states.
[2023-12-25 20:39:52,170 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 21278 to 11002.
[2023-12-25 20:39:52,184 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 11002 states, 11001 states have (on average 1.666575765839469) internal successors, (18334), 11001 states have internal predecessors, (18334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 20:39:52,201 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 11002 states to 11002 states and 18334 transitions.
[2023-12-25 20:39:52,201 INFO  L78                 Accepts]: Start accepts. Automaton has 11002 states and 18334 transitions. Word has length 488
[2023-12-25 20:39:52,201 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 20:39:52,202 INFO  L495      AbstractCegarLoop]: Abstraction has 11002 states and 18334 transitions.
[2023-12-25 20:39:52,202 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 6 states, 6 states have (on average 81.33333333333333) internal successors, (488), 5 states have internal predecessors, (488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 20:39:52,202 INFO  L276                IsEmpty]: Start isEmpty. Operand 11002 states and 18334 transitions.
[2023-12-25 20:39:52,504 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 7324
[2023-12-25 20:39:52,505 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 20:39:52,509 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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[2023-12-25 20:39:52,509 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4
[2023-12-25 20:39:52,510 INFO  L420      AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 20:39:52,510 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 20:39:52,512 INFO  L85        PathProgramCache]: Analyzing trace with hash -2086541254, now seen corresponding path program 1 times
[2023-12-25 20:39:52,512 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 20:39:52,512 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1963345935]
[2023-12-25 20:39:52,513 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 20:39:52,513 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 20:39:53,150 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 20:39:53,150 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [692046318]
[2023-12-25 20:39:53,151 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 20:39:53,152 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 20:39:53,152 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 20:39:53,154 INFO  L229       MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-25 20:39:53,188 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process
[2023-12-25 20:40:02,395 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 20:40:02,624 INFO  L262         TraceCheckSpWp]: Trace formula consists of 36602 conjuncts, 6 conjunts are in the unsatisfiable core
[2023-12-25 20:40:02,750 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 20:40:02,908 INFO  L134       CoverageAnalysis]: Checked inductivity of 132 backedges. 132 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-25 20:40:02,908 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 20:40:02,908 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 20:40:02,908 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1963345935]
[2023-12-25 20:40:02,908 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 20:40:02,908 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [692046318]
[2023-12-25 20:40:02,909 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [692046318] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 20:40:02,909 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 20:40:02,909 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2023-12-25 20:40:02,909 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [99627173]
[2023-12-25 20:40:02,909 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 20:40:02,915 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2023-12-25 20:40:02,916 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 20:40:03,057 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2023-12-25 20:40:03,057 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2023-12-25 20:40:03,059 INFO  L87              Difference]: Start difference. First operand 11002 states and 18334 transitions. Second operand  has 3 states, 3 states have (on average 2441.0) internal successors, (7323), 3 states have internal predecessors, (7323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 20:40:03,291 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 20:40:03,292 INFO  L93              Difference]: Finished difference Result 21298 states and 35493 transitions.
[2023-12-25 20:40:03,295 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2023-12-25 20:40:03,297 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 2441.0) internal successors, (7323), 3 states have internal predecessors, (7323), 0 states have call successors, (0), 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 7323
[2023-12-25 20:40:03,299 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 20:40:03,314 INFO  L225             Difference]: With dead ends: 21298
[2023-12-25 20:40:03,314 INFO  L226             Difference]: Without dead ends: 11007
[2023-12-25 20:40:03,327 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 7322 GetRequests, 7321 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2023-12-25 20:40:03,328 INFO  L413           NwaCegarLoop]: 18014 mSDtfsCounter, 6 mSDsluCounter, 18009 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 36023 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2023-12-25 20:40:03,328 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 36023 Invalid, 8 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-12-25 20:40:03,339 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 11007 states.
[2023-12-25 20:40:03,435 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 11007 to 11003.
[2023-12-25 20:40:03,449 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 11003 states, 11002 states have (on average 1.666515179058353) internal successors, (18335), 11002 states have internal predecessors, (18335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 20:40:03,464 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 11003 states to 11003 states and 18335 transitions.
[2023-12-25 20:40:03,464 INFO  L78                 Accepts]: Start accepts. Automaton has 11003 states and 18335 transitions. Word has length 7323
[2023-12-25 20:40:03,465 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 20:40:03,465 INFO  L495      AbstractCegarLoop]: Abstraction has 11003 states and 18335 transitions.
[2023-12-25 20:40:03,467 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 2441.0) internal successors, (7323), 3 states have internal predecessors, (7323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 20:40:03,467 INFO  L276                IsEmpty]: Start isEmpty. Operand 11003 states and 18335 transitions.
[2023-12-25 20:40:03,778 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 7324
[2023-12-25 20:40:03,778 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 20:40:03,781 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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[2023-12-25 20:40:03,881 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0
[2023-12-25 20:40:03,984 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5
[2023-12-25 20:40:03,985 INFO  L420      AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 20:40:03,985 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 20:40:03,987 INFO  L85        PathProgramCache]: Analyzing trace with hash 1823309356, now seen corresponding path program 1 times
[2023-12-25 20:40:03,987 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 20:40:03,987 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [307289632]
[2023-12-25 20:40:03,988 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 20:40:03,988 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 20:40:04,642 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 20:40:04,642 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1337312305]
[2023-12-25 20:40:04,644 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 20:40:04,644 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 20:40:04,644 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 20:40:04,645 INFO  L229       MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-25 20:40:04,672 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process
[2023-12-25 20:40:14,508 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 20:40:14,723 INFO  L262         TraceCheckSpWp]: Trace formula consists of 36603 conjuncts, 10 conjunts are in the unsatisfiable core
[2023-12-25 20:40:14,833 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 20:40:16,937 INFO  L134       CoverageAnalysis]: Checked inductivity of 132 backedges. 132 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-25 20:40:16,937 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 20:40:16,937 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 20:40:16,938 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [307289632]
[2023-12-25 20:40:16,938 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 20:40:16,938 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1337312305]
[2023-12-25 20:40:16,938 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1337312305] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 20:40:16,938 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 20:40:16,938 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2023-12-25 20:40:16,938 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1253082663]
[2023-12-25 20:40:16,939 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 20:40:16,944 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-12-25 20:40:16,944 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 20:40:16,949 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-12-25 20:40:16,949 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-12-25 20:40:16,950 INFO  L87              Difference]: Start difference. First operand 11003 states and 18335 transitions. Second operand  has 4 states, 4 states have (on average 1830.75) internal successors, (7323), 3 states have internal predecessors, (7323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 20:40:22,362 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 20:40:22,363 INFO  L93              Difference]: Finished difference Result 21872 states and 36446 transitions.
[2023-12-25 20:40:22,363 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-12-25 20:40:22,365 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 1830.75) internal successors, (7323), 3 states have internal predecessors, (7323), 0 states have call successors, (0), 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 7323
[2023-12-25 20:40:22,366 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 20:40:22,383 INFO  L225             Difference]: With dead ends: 21872
[2023-12-25 20:40:22,384 INFO  L226             Difference]: Without dead ends: 11580
[2023-12-25 20:40:22,389 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 7323 GetRequests, 7320 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2023-12-25 20:40:22,390 INFO  L413           NwaCegarLoop]: 13972 mSDtfsCounter, 34296 mSDsluCounter, 1447 mSDsCounter, 0 mSdLazyCounter, 6003 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34296 SdHoareTripleChecker+Valid, 15419 SdHoareTripleChecker+Invalid, 6003 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6003 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time
[2023-12-25 20:40:22,391 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [34296 Valid, 15419 Invalid, 6003 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 6003 Invalid, 0 Unknown, 0 Unchecked, 5.1s Time]
[2023-12-25 20:40:22,404 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 11580 states.
[2023-12-25 20:40:22,499 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 11580 to 11003.
[2023-12-25 20:40:22,512 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 11003 states, 11002 states have (on average 1.666424286493365) internal successors, (18334), 11002 states have internal predecessors, (18334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 20:40:22,531 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 11003 states to 11003 states and 18334 transitions.
[2023-12-25 20:40:22,531 INFO  L78                 Accepts]: Start accepts. Automaton has 11003 states and 18334 transitions. Word has length 7323
[2023-12-25 20:40:22,532 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 20:40:22,532 INFO  L495      AbstractCegarLoop]: Abstraction has 11003 states and 18334 transitions.
[2023-12-25 20:40:22,534 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 1830.75) internal successors, (7323), 3 states have internal predecessors, (7323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 20:40:22,535 INFO  L276                IsEmpty]: Start isEmpty. Operand 11003 states and 18334 transitions.
[2023-12-25 20:40:22,842 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 7325
[2023-12-25 20:40:22,842 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 20:40:22,845 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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[2023-12-25 20:40:22,948 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0
[2023-12-25 20:40:23,058 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6
[2023-12-25 20:40:23,059 INFO  L420      AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 20:40:23,059 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 20:40:23,061 INFO  L85        PathProgramCache]: Analyzing trace with hash -583912770, now seen corresponding path program 1 times
[2023-12-25 20:40:23,061 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 20:40:23,061 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1169305118]
[2023-12-25 20:40:23,062 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 20:40:23,062 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 20:40:23,733 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 20:40:23,734 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2075816647]
[2023-12-25 20:40:23,735 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 20:40:23,735 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 20:40:23,735 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 20:40:23,754 INFO  L229       MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-25 20:40:23,755 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process
[2023-12-25 20:40:32,827 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 20:40:33,051 INFO  L262         TraceCheckSpWp]: Trace formula consists of 36604 conjuncts, 10 conjunts are in the unsatisfiable core
[2023-12-25 20:40:33,151 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 20:40:35,182 INFO  L134       CoverageAnalysis]: Checked inductivity of 132 backedges. 132 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-25 20:40:35,182 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 20:40:35,182 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 20:40:35,182 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1169305118]
[2023-12-25 20:40:35,183 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 20:40:35,183 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2075816647]
[2023-12-25 20:40:35,183 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [2075816647] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 20:40:35,183 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 20:40:35,183 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2023-12-25 20:40:35,183 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1061243632]
[2023-12-25 20:40:35,183 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 20:40:35,188 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-12-25 20:40:35,188 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 20:40:35,193 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-12-25 20:40:35,193 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-12-25 20:40:35,193 INFO  L87              Difference]: Start difference. First operand 11003 states and 18334 transitions. Second operand  has 4 states, 4 states have (on average 1831.0) internal successors, (7324), 3 states have internal predecessors, (7324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 20:40:39,341 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 20:40:39,341 INFO  L93              Difference]: Finished difference Result 21885 states and 36465 transitions.
[2023-12-25 20:40:39,341 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-12-25 20:40:39,343 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 1831.0) internal successors, (7324), 3 states have internal predecessors, (7324), 0 states have call successors, (0), 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 7324
[2023-12-25 20:40:39,344 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 20:40:39,361 INFO  L225             Difference]: With dead ends: 21885
[2023-12-25 20:40:39,361 INFO  L226             Difference]: Without dead ends: 11593
[2023-12-25 20:40:39,370 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 7324 GetRequests, 7321 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2023-12-25 20:40:39,371 INFO  L413           NwaCegarLoop]: 13991 mSDtfsCounter, 34285 mSDsluCounter, 1467 mSDsCounter, 0 mSdLazyCounter, 6005 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34285 SdHoareTripleChecker+Valid, 15458 SdHoareTripleChecker+Invalid, 6005 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6005 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time
[2023-12-25 20:40:39,371 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [34285 Valid, 15458 Invalid, 6005 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6005 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time]
[2023-12-25 20:40:39,385 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 11593 states.
[2023-12-25 20:40:39,470 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 11593 to 11003.
[2023-12-25 20:40:39,481 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 11003 states, 11002 states have (on average 1.6663333939283766) internal successors, (18333), 11002 states have internal predecessors, (18333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 20:40:39,494 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 11003 states to 11003 states and 18333 transitions.
[2023-12-25 20:40:39,494 INFO  L78                 Accepts]: Start accepts. Automaton has 11003 states and 18333 transitions. Word has length 7324
[2023-12-25 20:40:39,496 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 20:40:39,496 INFO  L495      AbstractCegarLoop]: Abstraction has 11003 states and 18333 transitions.
[2023-12-25 20:40:39,497 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 1831.0) internal successors, (7324), 3 states have internal predecessors, (7324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 20:40:39,497 INFO  L276                IsEmpty]: Start isEmpty. Operand 11003 states and 18333 transitions.
[2023-12-25 20:40:39,829 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 7326
[2023-12-25 20:40:39,830 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 20:40:39,833 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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[2023-12-25 20:40:39,940 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0
[2023-12-25 20:40:40,049 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 20:40:40,049 INFO  L420      AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 20:40:40,050 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 20:40:40,052 INFO  L85        PathProgramCache]: Analyzing trace with hash 927822601, now seen corresponding path program 1 times
[2023-12-25 20:40:40,052 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 20:40:40,052 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [720259183]
[2023-12-25 20:40:40,053 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 20:40:40,053 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 20:40:40,700 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 20:40:40,700 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1300390922]
[2023-12-25 20:40:40,702 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 20:40:40,702 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 20:40:40,702 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 20:40:40,703 INFO  L229       MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-25 20:40:40,704 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process
[2023-12-25 20:40:49,633 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 20:40:49,852 INFO  L262         TraceCheckSpWp]: Trace formula consists of 36605 conjuncts, 10 conjunts are in the unsatisfiable core
[2023-12-25 20:40:49,952 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 20:40:52,064 INFO  L134       CoverageAnalysis]: Checked inductivity of 132 backedges. 132 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-25 20:40:52,064 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 20:40:52,064 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 20:40:52,064 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [720259183]
[2023-12-25 20:40:52,065 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 20:40:52,065 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1300390922]
[2023-12-25 20:40:52,065 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1300390922] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 20:40:52,065 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 20:40:52,066 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2023-12-25 20:40:52,066 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [288310025]
[2023-12-25 20:40:52,066 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 20:40:52,072 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-12-25 20:40:52,073 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 20:40:52,079 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-12-25 20:40:52,079 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-12-25 20:40:52,081 INFO  L87              Difference]: Start difference. First operand 11003 states and 18333 transitions. Second operand  has 4 states, 4 states have (on average 1831.25) internal successors, (7325), 3 states have internal predecessors, (7325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 20:40:57,156 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 20:40:57,156 INFO  L93              Difference]: Finished difference Result 21901 states and 36489 transitions.
[2023-12-25 20:40:57,156 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-12-25 20:40:57,158 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 1831.25) internal successors, (7325), 3 states have internal predecessors, (7325), 0 states have call successors, (0), 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 7325
[2023-12-25 20:40:57,159 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 20:40:57,205 INFO  L225             Difference]: With dead ends: 21901
[2023-12-25 20:40:57,205 INFO  L226             Difference]: Without dead ends: 11609
[2023-12-25 20:40:57,214 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 7325 GetRequests, 7322 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2023-12-25 20:40:57,216 INFO  L413           NwaCegarLoop]: 14015 mSDtfsCounter, 34272 mSDsluCounter, 1492 mSDsCounter, 0 mSdLazyCounter, 6007 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34272 SdHoareTripleChecker+Valid, 15507 SdHoareTripleChecker+Invalid, 6007 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6007 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time
[2023-12-25 20:40:57,216 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [34272 Valid, 15507 Invalid, 6007 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 6007 Invalid, 0 Unknown, 0 Unchecked, 4.9s Time]
[2023-12-25 20:40:57,242 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 11609 states.
[2023-12-25 20:40:57,427 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 11609 to 11003.
[2023-12-25 20:40:57,439 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 11003 states, 11002 states have (on average 1.6662425013633886) internal successors, (18332), 11002 states have internal predecessors, (18332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 20:40:57,455 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 11003 states to 11003 states and 18332 transitions.
[2023-12-25 20:40:57,456 INFO  L78                 Accepts]: Start accepts. Automaton has 11003 states and 18332 transitions. Word has length 7325
[2023-12-25 20:40:57,457 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 20:40:57,457 INFO  L495      AbstractCegarLoop]: Abstraction has 11003 states and 18332 transitions.
[2023-12-25 20:40:57,459 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 1831.25) internal successors, (7325), 3 states have internal predecessors, (7325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 20:40:57,459 INFO  L276                IsEmpty]: Start isEmpty. Operand 11003 states and 18332 transitions.
[2023-12-25 20:40:57,782 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 7327
[2023-12-25 20:40:57,782 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 20:40:57,785 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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[2023-12-25 20:40:57,901 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0
[2023-12-25 20:40:57,990 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 20:40:57,990 INFO  L420      AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 20:40:57,990 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 20:40:57,992 INFO  L85        PathProgramCache]: Analyzing trace with hash -420818911, now seen corresponding path program 1 times
[2023-12-25 20:40:57,992 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 20:40:57,992 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [651195937]
[2023-12-25 20:40:57,993 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 20:40:57,993 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 20:40:58,658 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 20:40:58,659 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [437176373]
[2023-12-25 20:40:58,660 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 20:40:58,660 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 20:40:58,660 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 20:40:58,661 INFO  L229       MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-25 20:40:58,663 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process
[2023-12-25 20:41:07,722 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 20:41:07,950 INFO  L262         TraceCheckSpWp]: Trace formula consists of 36606 conjuncts, 10 conjunts are in the unsatisfiable core
[2023-12-25 20:41:08,060 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 20:41:10,155 INFO  L134       CoverageAnalysis]: Checked inductivity of 132 backedges. 132 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-25 20:41:10,155 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 20:41:10,155 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 20:41:10,155 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [651195937]
[2023-12-25 20:41:10,155 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 20:41:10,155 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [437176373]
[2023-12-25 20:41:10,156 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [437176373] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 20:41:10,156 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 20:41:10,156 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2023-12-25 20:41:10,156 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [332597972]
[2023-12-25 20:41:10,156 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 20:41:10,162 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-12-25 20:41:10,162 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 20:41:10,166 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-12-25 20:41:10,167 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-12-25 20:41:10,167 INFO  L87              Difference]: Start difference. First operand 11003 states and 18332 transitions. Second operand  has 4 states, 4 states have (on average 1831.5) internal successors, (7326), 3 states have internal predecessors, (7326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 20:41:15,453 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 20:41:15,453 INFO  L93              Difference]: Finished difference Result 21908 states and 36498 transitions.
[2023-12-25 20:41:15,453 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-12-25 20:41:15,455 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 1831.5) internal successors, (7326), 3 states have internal predecessors, (7326), 0 states have call successors, (0), 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 7326
[2023-12-25 20:41:15,456 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 20:41:15,464 INFO  L225             Difference]: With dead ends: 21908
[2023-12-25 20:41:15,464 INFO  L226             Difference]: Without dead ends: 11616
[2023-12-25 20:41:15,473 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 7326 GetRequests, 7323 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2023-12-25 20:41:15,473 INFO  L413           NwaCegarLoop]: 14024 mSDtfsCounter, 34265 mSDsluCounter, 1502 mSDsCounter, 0 mSdLazyCounter, 6009 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34265 SdHoareTripleChecker+Valid, 15526 SdHoareTripleChecker+Invalid, 6009 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6009 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time
[2023-12-25 20:41:15,474 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [34265 Valid, 15526 Invalid, 6009 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 6009 Invalid, 0 Unknown, 0 Unchecked, 5.1s Time]
[2023-12-25 20:41:15,485 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 11616 states.
[2023-12-25 20:41:15,564 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 11616 to 11003.
[2023-12-25 20:41:15,575 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 11003 states, 11002 states have (on average 1.6661516087984003) internal successors, (18331), 11002 states have internal predecessors, (18331), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 20:41:15,585 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 11003 states to 11003 states and 18331 transitions.
[2023-12-25 20:41:15,586 INFO  L78                 Accepts]: Start accepts. Automaton has 11003 states and 18331 transitions. Word has length 7326
[2023-12-25 20:41:15,587 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 20:41:15,587 INFO  L495      AbstractCegarLoop]: Abstraction has 11003 states and 18331 transitions.
[2023-12-25 20:41:15,588 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 1831.5) internal successors, (7326), 3 states have internal predecessors, (7326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 20:41:15,589 INFO  L276                IsEmpty]: Start isEmpty. Operand 11003 states and 18331 transitions.
[2023-12-25 20:41:15,964 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 7328
[2023-12-25 20:41:15,965 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 20:41:15,968 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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[2023-12-25 20:41:16,068 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 20:41:16,185 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9
[2023-12-25 20:41:16,186 INFO  L420      AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 20:41:16,187 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 20:41:16,188 INFO  L85        PathProgramCache]: Analyzing trace with hash 915063450, now seen corresponding path program 1 times
[2023-12-25 20:41:16,188 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 20:41:16,189 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1783939886]
[2023-12-25 20:41:16,189 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 20:41:16,189 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 20:41:16,859 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 20:41:16,859 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1734219940]
[2023-12-25 20:41:16,861 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 20:41:16,861 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 20:41:16,861 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 20:41:16,862 INFO  L229       MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-25 20:41:16,864 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process
[2023-12-25 20:41:25,827 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 20:41:26,051 INFO  L262         TraceCheckSpWp]: Trace formula consists of 36607 conjuncts, 10 conjunts are in the unsatisfiable core
[2023-12-25 20:41:26,136 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 20:41:28,130 INFO  L134       CoverageAnalysis]: Checked inductivity of 132 backedges. 132 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-25 20:41:28,131 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 20:41:28,131 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 20:41:28,131 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1783939886]
[2023-12-25 20:41:28,131 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 20:41:28,131 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1734219940]
[2023-12-25 20:41:28,131 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1734219940] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 20:41:28,131 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 20:41:28,132 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2023-12-25 20:41:28,132 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1973388950]
[2023-12-25 20:41:28,132 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 20:41:28,137 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-12-25 20:41:28,137 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 20:41:28,141 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-12-25 20:41:28,141 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-12-25 20:41:28,141 INFO  L87              Difference]: Start difference. First operand 11003 states and 18331 transitions. Second operand  has 4 states, 4 states have (on average 1831.75) internal successors, (7327), 3 states have internal predecessors, (7327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 20:41:33,182 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 20:41:33,182 INFO  L93              Difference]: Finished difference Result 21912 states and 36502 transitions.
[2023-12-25 20:41:33,182 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-12-25 20:41:33,184 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 1831.75) internal successors, (7327), 3 states have internal predecessors, (7327), 0 states have call successors, (0), 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 7327
[2023-12-25 20:41:33,185 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 20:41:33,193 INFO  L225             Difference]: With dead ends: 21912
[2023-12-25 20:41:33,194 INFO  L226             Difference]: Without dead ends: 11620
[2023-12-25 20:41:33,213 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 7327 GetRequests, 7324 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2023-12-25 20:41:33,214 INFO  L413           NwaCegarLoop]: 14028 mSDtfsCounter, 34260 mSDsluCounter, 1507 mSDsCounter, 0 mSdLazyCounter, 6011 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34260 SdHoareTripleChecker+Valid, 15535 SdHoareTripleChecker+Invalid, 6011 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6011 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time
[2023-12-25 20:41:33,214 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [34260 Valid, 15535 Invalid, 6011 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6011 Invalid, 0 Unknown, 0 Unchecked, 4.8s Time]
[2023-12-25 20:41:33,224 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 11620 states.
[2023-12-25 20:41:33,303 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 11620 to 11003.
[2023-12-25 20:41:33,314 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 11003 states, 11002 states have (on average 1.666060716233412) internal successors, (18330), 11002 states have internal predecessors, (18330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 20:41:33,324 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 11003 states to 11003 states and 18330 transitions.
[2023-12-25 20:41:33,325 INFO  L78                 Accepts]: Start accepts. Automaton has 11003 states and 18330 transitions. Word has length 7327
[2023-12-25 20:41:33,326 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 20:41:33,326 INFO  L495      AbstractCegarLoop]: Abstraction has 11003 states and 18330 transitions.
[2023-12-25 20:41:33,328 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 1831.75) internal successors, (7327), 3 states have internal predecessors, (7327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 20:41:33,328 INFO  L276                IsEmpty]: Start isEmpty. Operand 11003 states and 18330 transitions.
[2023-12-25 20:41:33,664 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 7329
[2023-12-25 20:41:33,665 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 20:41:33,667 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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[2023-12-25 20:41:33,770 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0
[2023-12-25 20:41:33,892 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 20:41:33,893 INFO  L420      AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 20:41:33,893 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 20:41:33,895 INFO  L85        PathProgramCache]: Analyzing trace with hash 1312535020, now seen corresponding path program 1 times
[2023-12-25 20:41:33,895 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 20:41:33,895 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2053083326]
[2023-12-25 20:41:33,896 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 20:41:33,896 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 20:41:34,635 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 20:41:34,635 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [743090241]
[2023-12-25 20:41:34,636 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 20:41:34,636 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 20:41:34,637 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 20:41:34,637 INFO  L229       MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-25 20:41:34,639 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process
[2023-12-25 20:41:43,557 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 20:41:43,785 INFO  L262         TraceCheckSpWp]: Trace formula consists of 36608 conjuncts, 10 conjunts are in the unsatisfiable core
[2023-12-25 20:41:43,983 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 20:41:45,740 INFO  L134       CoverageAnalysis]: Checked inductivity of 132 backedges. 132 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-25 20:41:45,741 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 20:41:45,741 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 20:41:45,741 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2053083326]
[2023-12-25 20:41:45,741 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 20:41:45,741 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [743090241]
[2023-12-25 20:41:45,741 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [743090241] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 20:41:45,741 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 20:41:45,742 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2023-12-25 20:41:45,742 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [16330493]
[2023-12-25 20:41:45,742 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 20:41:45,746 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-12-25 20:41:45,746 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 20:41:45,751 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-12-25 20:41:45,751 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-12-25 20:41:45,751 INFO  L87              Difference]: Start difference. First operand 11003 states and 18330 transitions. Second operand  has 4 states, 4 states have (on average 1832.0) internal successors, (7328), 3 states have internal predecessors, (7328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 20:41:49,569 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 20:41:49,569 INFO  L93              Difference]: Finished difference Result 21937 states and 36541 transitions.
[2023-12-25 20:41:49,569 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-12-25 20:41:49,571 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 1832.0) internal successors, (7328), 3 states have internal predecessors, (7328), 0 states have call successors, (0), 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 7328
[2023-12-25 20:41:49,574 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 20:41:49,584 INFO  L225             Difference]: With dead ends: 21937
[2023-12-25 20:41:49,584 INFO  L226             Difference]: Without dead ends: 11645
[2023-12-25 20:41:49,609 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 7328 GetRequests, 7325 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2023-12-25 20:41:49,615 INFO  L413           NwaCegarLoop]: 14067 mSDtfsCounter, 34241 mSDsluCounter, 1547 mSDsCounter, 0 mSdLazyCounter, 6013 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34241 SdHoareTripleChecker+Valid, 15614 SdHoareTripleChecker+Invalid, 6013 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6013 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time
[2023-12-25 20:41:49,615 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [34241 Valid, 15614 Invalid, 6013 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6013 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time]
[2023-12-25 20:41:49,626 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 11645 states.
[2023-12-25 20:41:49,789 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 11645 to 11003.
[2023-12-25 20:41:49,802 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 11003 states, 11002 states have (on average 1.665969823668424) internal successors, (18329), 11002 states have internal predecessors, (18329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 20:41:49,813 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 11003 states to 11003 states and 18329 transitions.
[2023-12-25 20:41:49,813 INFO  L78                 Accepts]: Start accepts. Automaton has 11003 states and 18329 transitions. Word has length 7328
[2023-12-25 20:41:49,815 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 20:41:49,815 INFO  L495      AbstractCegarLoop]: Abstraction has 11003 states and 18329 transitions.
[2023-12-25 20:41:49,817 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 1832.0) internal successors, (7328), 3 states have internal predecessors, (7328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 20:41:49,817 INFO  L276                IsEmpty]: Start isEmpty. Operand 11003 states and 18329 transitions.
[2023-12-25 20:41:50,123 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 7330
[2023-12-25 20:41:50,123 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 20:41:50,126 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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[2023-12-25 20:41:50,227 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 20:41:50,339 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 20:41:50,339 INFO  L420      AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 20:41:50,340 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 20:41:50,342 INFO  L85        PathProgramCache]: Analyzing trace with hash -584851185, now seen corresponding path program 1 times
[2023-12-25 20:41:50,342 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 20:41:50,342 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1286157623]
[2023-12-25 20:41:50,343 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 20:41:50,343 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 20:41:50,979 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 20:41:50,979 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [224298481]
[2023-12-25 20:41:50,981 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 20:41:50,981 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 20:41:50,981 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 20:41:50,982 INFO  L229       MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-25 20:41:50,984 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process
[2023-12-25 20:42:00,296 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 20:42:00,537 INFO  L262         TraceCheckSpWp]: Trace formula consists of 36609 conjuncts, 10 conjunts are in the unsatisfiable core
[2023-12-25 20:42:00,646 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 20:42:02,046 INFO  L134       CoverageAnalysis]: Checked inductivity of 132 backedges. 132 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-25 20:42:02,047 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 20:42:02,047 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 20:42:02,047 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1286157623]
[2023-12-25 20:42:02,047 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 20:42:02,047 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [224298481]
[2023-12-25 20:42:02,047 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [224298481] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 20:42:02,048 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 20:42:02,049 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2023-12-25 20:42:02,049 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [601299075]
[2023-12-25 20:42:02,049 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 20:42:02,056 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-12-25 20:42:02,056 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 20:42:02,062 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-12-25 20:42:02,062 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-12-25 20:42:02,063 INFO  L87              Difference]: Start difference. First operand 11003 states and 18329 transitions. Second operand  has 4 states, 4 states have (on average 1832.25) internal successors, (7329), 3 states have internal predecessors, (7329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 20:42:06,277 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 20:42:06,277 INFO  L93              Difference]: Finished difference Result 21956 states and 36570 transitions.
[2023-12-25 20:42:06,277 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-12-25 20:42:06,279 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 1832.25) internal successors, (7329), 3 states have internal predecessors, (7329), 0 states have call successors, (0), 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 7329
[2023-12-25 20:42:06,280 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 20:42:06,286 INFO  L225             Difference]: With dead ends: 21956
[2023-12-25 20:42:06,286 INFO  L226             Difference]: Without dead ends: 11664
[2023-12-25 20:42:06,290 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 7329 GetRequests, 7326 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2023-12-25 20:42:06,291 INFO  L413           NwaCegarLoop]: 14096 mSDtfsCounter, 34226 mSDsluCounter, 1577 mSDsCounter, 0 mSdLazyCounter, 6015 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34226 SdHoareTripleChecker+Valid, 15673 SdHoareTripleChecker+Invalid, 6015 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6015 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time
[2023-12-25 20:42:06,291 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [34226 Valid, 15673 Invalid, 6015 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6015 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time]
[2023-12-25 20:42:06,298 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 11664 states.
[2023-12-25 20:42:06,378 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 11664 to 11003.
[2023-12-25 20:42:06,389 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 11003 states, 11002 states have (on average 1.6658789311034357) internal successors, (18328), 11002 states have internal predecessors, (18328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 20:42:06,403 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 11003 states to 11003 states and 18328 transitions.
[2023-12-25 20:42:06,403 INFO  L78                 Accepts]: Start accepts. Automaton has 11003 states and 18328 transitions. Word has length 7329
[2023-12-25 20:42:06,404 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 20:42:06,404 INFO  L495      AbstractCegarLoop]: Abstraction has 11003 states and 18328 transitions.
[2023-12-25 20:42:06,405 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 1832.25) internal successors, (7329), 3 states have internal predecessors, (7329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 20:42:06,406 INFO  L276                IsEmpty]: Start isEmpty. Operand 11003 states and 18328 transitions.
[2023-12-25 20:42:06,724 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 7331
[2023-12-25 20:42:06,724 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 20:42:06,726 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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[2023-12-25 20:42:06,843 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0
[2023-12-25 20:42:06,944 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12
[2023-12-25 20:42:06,944 INFO  L420      AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 20:42:06,945 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 20:42:06,947 INFO  L85        PathProgramCache]: Analyzing trace with hash 643707957, now seen corresponding path program 1 times
[2023-12-25 20:42:06,947 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 20:42:06,947 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1753277899]
[2023-12-25 20:42:06,948 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 20:42:06,948 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 20:42:07,596 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 20:42:07,596 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1332158100]
[2023-12-25 20:42:07,598 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 20:42:07,598 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 20:42:07,598 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 20:42:07,599 INFO  L229       MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-25 20:42:07,601 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process
[2023-12-25 20:42:16,544 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 20:42:16,761 INFO  L262         TraceCheckSpWp]: Trace formula consists of 36610 conjuncts, 10 conjunts are in the unsatisfiable core
[2023-12-25 20:42:16,844 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 20:42:18,620 INFO  L134       CoverageAnalysis]: Checked inductivity of 132 backedges. 132 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-25 20:42:18,621 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 20:42:18,621 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 20:42:18,621 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1753277899]
[2023-12-25 20:42:18,621 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 20:42:18,621 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1332158100]
[2023-12-25 20:42:18,622 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1332158100] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 20:42:18,622 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 20:42:18,623 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2023-12-25 20:42:18,623 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1100803510]
[2023-12-25 20:42:18,623 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 20:42:18,629 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-12-25 20:42:18,629 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 20:42:18,639 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-12-25 20:42:18,639 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-12-25 20:42:18,642 INFO  L87              Difference]: Start difference. First operand 11003 states and 18328 transitions. Second operand  has 4 states, 4 states have (on average 1832.5) internal successors, (7330), 3 states have internal predecessors, (7330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 20:42:22,396 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 20:42:22,396 INFO  L93              Difference]: Finished difference Result 21969 states and 36589 transitions.
[2023-12-25 20:42:22,396 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-12-25 20:42:22,398 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 1832.5) internal successors, (7330), 3 states have internal predecessors, (7330), 0 states have call successors, (0), 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 7330
[2023-12-25 20:42:22,412 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 20:42:22,421 INFO  L225             Difference]: With dead ends: 21969
[2023-12-25 20:42:22,421 INFO  L226             Difference]: Without dead ends: 11677
[2023-12-25 20:42:22,428 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 7330 GetRequests, 7327 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2023-12-25 20:42:22,428 INFO  L413           NwaCegarLoop]: 14115 mSDtfsCounter, 34215 mSDsluCounter, 1597 mSDsCounter, 0 mSdLazyCounter, 6017 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34215 SdHoareTripleChecker+Valid, 15712 SdHoareTripleChecker+Invalid, 6017 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6017 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time
[2023-12-25 20:42:22,428 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [34215 Valid, 15712 Invalid, 6017 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6017 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time]
[2023-12-25 20:42:22,436 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 11677 states.
[2023-12-25 20:42:22,590 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 11677 to 11003.
[2023-12-25 20:42:22,601 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 11003 states, 11002 states have (on average 1.6657880385384476) internal successors, (18327), 11002 states have internal predecessors, (18327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 20:42:22,613 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 11003 states to 11003 states and 18327 transitions.
[2023-12-25 20:42:22,613 INFO  L78                 Accepts]: Start accepts. Automaton has 11003 states and 18327 transitions. Word has length 7330
[2023-12-25 20:42:22,614 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 20:42:22,614 INFO  L495      AbstractCegarLoop]: Abstraction has 11003 states and 18327 transitions.
[2023-12-25 20:42:22,615 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 1832.5) internal successors, (7330), 3 states have internal predecessors, (7330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 20:42:22,615 INFO  L276                IsEmpty]: Start isEmpty. Operand 11003 states and 18327 transitions.
[2023-12-25 20:42:22,919 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 7332
[2023-12-25 20:42:22,919 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 20:42:22,921 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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[2023-12-25 20:42:23,028 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 20:42:23,148 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13
[2023-12-25 20:42:23,148 INFO  L420      AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 20:42:23,149 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 20:42:23,151 INFO  L85        PathProgramCache]: Analyzing trace with hash 47647980, now seen corresponding path program 1 times
[2023-12-25 20:42:23,151 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 20:42:23,151 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [565799563]
[2023-12-25 20:42:23,151 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 20:42:23,151 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 20:42:23,759 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 20:42:23,759 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1747329517]
[2023-12-25 20:42:23,760 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 20:42:23,762 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 20:42:23,762 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 20:42:23,772 INFO  L229       MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-25 20:42:23,775 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process
[2023-12-25 20:42:33,259 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 20:42:33,488 INFO  L262         TraceCheckSpWp]: Trace formula consists of 36611 conjuncts, 23 conjunts are in the unsatisfiable core
[2023-12-25 20:42:33,576 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 20:42:37,085 INFO  L134       CoverageAnalysis]: Checked inductivity of 132 backedges. 132 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-25 20:42:37,086 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 20:42:37,086 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 20:42:37,086 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [565799563]
[2023-12-25 20:42:37,086 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 20:42:37,086 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1747329517]
[2023-12-25 20:42:37,086 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1747329517] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 20:42:37,086 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 20:42:37,087 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9
[2023-12-25 20:42:37,087 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1724552161]
[2023-12-25 20:42:37,087 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 20:42:37,091 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 9 states
[2023-12-25 20:42:37,092 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 20:42:37,096 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants.
[2023-12-25 20:42:37,096 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72
[2023-12-25 20:42:37,097 INFO  L87              Difference]: Start difference. First operand 11003 states and 18327 transitions. Second operand  has 9 states, 9 states have (on average 814.5555555555555) internal successors, (7331), 9 states have internal predecessors, (7331), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 20:42:38,470 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 20:42:38,470 INFO  L93              Difference]: Finished difference Result 47462 states and 79065 transitions.
[2023-12-25 20:42:38,470 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. 
[2023-12-25 20:42:38,472 INFO  L78                 Accepts]: Start accepts. Automaton has  has 9 states, 9 states have (on average 814.5555555555555) internal successors, (7331), 9 states have internal predecessors, (7331), 0 states have call successors, (0), 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 7331
[2023-12-25 20:42:38,477 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 20:42:38,506 INFO  L225             Difference]: With dead ends: 47462
[2023-12-25 20:42:38,507 INFO  L226             Difference]: Without dead ends: 37170
[2023-12-25 20:42:38,516 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 7353 GetRequests, 7331 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 95 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=139, Invalid=413, Unknown=0, NotChecked=0, Total=552
[2023-12-25 20:42:38,517 INFO  L413           NwaCegarLoop]: 26071 mSDtfsCounter, 124912 mSDsluCounter, 132798 mSDsCounter, 0 mSdLazyCounter, 116 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 124912 SdHoareTripleChecker+Valid, 158869 SdHoareTripleChecker+Invalid, 117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.3s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2023-12-25 20:42:38,517 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [124912 Valid, 158869 Invalid, 117 Unknown, 0 Unchecked, 0.3s Time], IncrementalHoareTripleChecker [1 Valid, 116 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2023-12-25 20:42:38,544 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 37170 states.
[2023-12-25 20:42:38,719 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 37170 to 16428.
[2023-12-25 20:42:38,736 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 16428 states, 16427 states have (on average 1.6660376209898338) internal successors, (27368), 16427 states have internal predecessors, (27368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 20:42:38,754 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 16428 states to 16428 states and 27368 transitions.
[2023-12-25 20:42:38,755 INFO  L78                 Accepts]: Start accepts. Automaton has 16428 states and 27368 transitions. Word has length 7331
[2023-12-25 20:42:38,759 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 20:42:38,759 INFO  L495      AbstractCegarLoop]: Abstraction has 16428 states and 27368 transitions.
[2023-12-25 20:42:38,760 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 9 states, 9 states have (on average 814.5555555555555) internal successors, (7331), 9 states have internal predecessors, (7331), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 20:42:38,760 INFO  L276                IsEmpty]: Start isEmpty. Operand 16428 states and 27368 transitions.
[2023-12-25 20:42:39,104 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 7333
[2023-12-25 20:42:39,104 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 20:42:39,106 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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[2023-12-25 20:42:39,246 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0
[2023-12-25 20:42:39,320 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14
[2023-12-25 20:42:39,321 INFO  L420      AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 20:42:39,321 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 20:42:39,323 INFO  L85        PathProgramCache]: Analyzing trace with hash -377610162, now seen corresponding path program 1 times
[2023-12-25 20:42:39,323 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 20:42:39,323 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1988013423]
[2023-12-25 20:42:39,323 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 20:42:39,324 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 20:42:40,005 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 20:42:40,006 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1419510111]
[2023-12-25 20:42:40,007 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 20:42:40,007 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 20:42:40,008 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 20:42:40,009 INFO  L229       MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-25 20:42:40,010 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process
[2023-12-25 20:42:49,036 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 20:42:49,264 INFO  L262         TraceCheckSpWp]: Trace formula consists of 36614 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-12-25 20:42:49,373 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 20:42:49,739 INFO  L134       CoverageAnalysis]: Checked inductivity of 132 backedges. 132 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-25 20:42:49,739 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 20:42:49,740 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 20:42:49,740 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1988013423]
[2023-12-25 20:42:49,740 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 20:42:49,740 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1419510111]
[2023-12-25 20:42:49,740 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1419510111] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 20:42:49,740 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 20:42:49,741 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8
[2023-12-25 20:42:49,741 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [980045292]
[2023-12-25 20:42:49,741 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 20:42:49,746 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 8 states
[2023-12-25 20:42:49,746 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 20:42:49,750 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2023-12-25 20:42:49,750 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56
[2023-12-25 20:42:49,751 INFO  L87              Difference]: Start difference. First operand 16428 states and 27368 transitions. Second operand  has 8 states, 8 states have (on average 916.5) internal successors, (7332), 8 states have internal predecessors, (7332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 20:42:50,475 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 20:42:50,475 INFO  L93              Difference]: Finished difference Result 42606 states and 70977 transitions.
[2023-12-25 20:42:50,475 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. 
[2023-12-25 20:42:50,477 INFO  L78                 Accepts]: Start accepts. Automaton has  has 8 states, 8 states have (on average 916.5) internal successors, (7332), 8 states have internal predecessors, (7332), 0 states have call successors, (0), 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 7332
[2023-12-25 20:42:50,479 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 20:42:50,504 INFO  L225             Difference]: With dead ends: 42606
[2023-12-25 20:42:50,504 INFO  L226             Difference]: Without dead ends: 26704
[2023-12-25 20:42:50,520 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 7340 GetRequests, 7328 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182
[2023-12-25 20:42:50,521 INFO  L413           NwaCegarLoop]: 26071 mSDtfsCounter, 43817 mSDsluCounter, 113304 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43817 SdHoareTripleChecker+Valid, 139375 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2023-12-25 20:42:50,521 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [43817 Valid, 139375 Invalid, 59 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [1 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2023-12-25 20:42:50,540 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 26704 states.
[2023-12-25 20:42:50,752 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 26704 to 16430.
[2023-12-25 20:42:50,766 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 16430 states, 16429 states have (on average 1.665956540264167) internal successors, (27370), 16429 states have internal predecessors, (27370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 20:42:50,785 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 16430 states to 16430 states and 27370 transitions.
[2023-12-25 20:42:50,785 INFO  L78                 Accepts]: Start accepts. Automaton has 16430 states and 27370 transitions. Word has length 7332
[2023-12-25 20:42:50,787 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 20:42:50,787 INFO  L495      AbstractCegarLoop]: Abstraction has 16430 states and 27370 transitions.
[2023-12-25 20:42:50,789 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 8 states, 8 states have (on average 916.5) internal successors, (7332), 8 states have internal predecessors, (7332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 20:42:50,789 INFO  L276                IsEmpty]: Start isEmpty. Operand 16430 states and 27370 transitions.
[2023-12-25 20:42:51,122 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 7334
[2023-12-25 20:42:51,122 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 20:42:51,124 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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[2023-12-25 20:42:51,239 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0
[2023-12-25 20:42:51,340 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15
[2023-12-25 20:42:51,341 INFO  L420      AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 20:42:51,341 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 20:42:51,343 INFO  L85        PathProgramCache]: Analyzing trace with hash -1032662062, now seen corresponding path program 1 times
[2023-12-25 20:42:51,343 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 20:42:51,343 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1098862271]
[2023-12-25 20:42:51,344 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 20:42:51,344 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 20:42:51,989 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 20:42:51,990 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1690504158]
[2023-12-25 20:42:51,991 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 20:42:51,992 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 20:42:51,992 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 20:42:52,013 INFO  L229       MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-25 20:42:52,024 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process
[2023-12-25 20:43:00,977 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 20:43:01,222 INFO  L262         TraceCheckSpWp]: Trace formula consists of 36617 conjuncts, 7 conjunts are in the unsatisfiable core
[2023-12-25 20:43:01,300 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 20:43:02,625 INFO  L134       CoverageAnalysis]: Checked inductivity of 132 backedges. 132 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-25 20:43:02,626 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 20:43:02,626 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 20:43:02,626 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1098862271]
[2023-12-25 20:43:02,626 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 20:43:02,626 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1690504158]
[2023-12-25 20:43:02,626 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1690504158] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 20:43:02,626 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 20:43:02,627 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2023-12-25 20:43:02,627 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1010115598]
[2023-12-25 20:43:02,627 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 20:43:02,631 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-12-25 20:43:02,631 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 20:43:02,635 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-12-25 20:43:02,635 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2023-12-25 20:43:02,635 INFO  L87              Difference]: Start difference. First operand 16430 states and 27370 transitions. Second operand  has 5 states, 5 states have (on average 1466.6) internal successors, (7333), 5 states have internal predecessors, (7333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 20:43:11,614 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 20:43:11,615 INFO  L93              Difference]: Finished difference Result 37826 states and 63016 transitions.
[2023-12-25 20:43:11,615 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2023-12-25 20:43:11,616 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 1466.6) internal successors, (7333), 5 states have internal predecessors, (7333), 0 states have call successors, (0), 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 7333
[2023-12-25 20:43:11,619 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 20:43:11,631 INFO  L225             Difference]: With dead ends: 37826
[2023-12-25 20:43:11,632 INFO  L226             Difference]: Without dead ends: 21922
[2023-12-25 20:43:11,638 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 7334 GetRequests, 7329 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42
[2023-12-25 20:43:11,639 INFO  L413           NwaCegarLoop]: 25332 mSDtfsCounter, 8800 mSDsluCounter, 58975 mSDsCounter, 0 mSdLazyCounter, 15170 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8800 SdHoareTripleChecker+Valid, 84307 SdHoareTripleChecker+Invalid, 15170 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15170 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.5s IncrementalHoareTripleChecker+Time
[2023-12-25 20:43:11,639 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [8800 Valid, 84307 Invalid, 15170 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 15170 Invalid, 0 Unknown, 0 Unchecked, 8.5s Time]
[2023-12-25 20:43:11,650 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 21922 states.
[2023-12-25 20:43:11,786 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 21922 to 16972.
[2023-12-25 20:43:11,802 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 16972 states, 16971 states have (on average 1.665841730010017) internal successors, (28271), 16971 states have internal predecessors, (28271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 20:43:11,820 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 16972 states to 16972 states and 28271 transitions.
[2023-12-25 20:43:11,820 INFO  L78                 Accepts]: Start accepts. Automaton has 16972 states and 28271 transitions. Word has length 7333
[2023-12-25 20:43:11,822 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 20:43:11,823 INFO  L495      AbstractCegarLoop]: Abstraction has 16972 states and 28271 transitions.
[2023-12-25 20:43:11,824 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 1466.6) internal successors, (7333), 5 states have internal predecessors, (7333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 20:43:11,824 INFO  L276                IsEmpty]: Start isEmpty. Operand 16972 states and 28271 transitions.
[2023-12-25 20:43:12,141 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 7335
[2023-12-25 20:43:12,141 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 20:43:12,143 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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[2023-12-25 20:43:12,255 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0
[2023-12-25 20:43:12,368 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16
[2023-12-25 20:43:12,368 INFO  L420      AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 20:43:12,369 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 20:43:12,370 INFO  L85        PathProgramCache]: Analyzing trace with hash -1599749176, now seen corresponding path program 1 times
[2023-12-25 20:43:12,370 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 20:43:12,370 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1778322548]
[2023-12-25 20:43:12,370 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 20:43:12,371 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 20:43:12,910 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 20:43:12,910 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1031304927]
[2023-12-25 20:43:12,912 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 20:43:12,912 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 20:43:12,912 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 20:43:12,923 INFO  L229       MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-25 20:43:12,924 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process
[2023-12-25 20:43:21,801 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 20:43:22,039 INFO  L262         TraceCheckSpWp]: Trace formula consists of 36621 conjuncts, 9 conjunts are in the unsatisfiable core
[2023-12-25 20:43:22,329 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 20:43:29,008 INFO  L134       CoverageAnalysis]: Checked inductivity of 132 backedges. 132 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-25 20:43:29,008 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 20:43:29,009 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 20:43:29,009 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1778322548]
[2023-12-25 20:43:29,009 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 20:43:29,009 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1031304927]
[2023-12-25 20:43:29,009 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1031304927] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 20:43:29,009 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 20:43:29,009 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2023-12-25 20:43:29,010 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1204960828]
[2023-12-25 20:43:29,010 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 20:43:29,014 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-12-25 20:43:29,014 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 20:43:29,017 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-12-25 20:43:29,017 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2023-12-25 20:43:29,018 INFO  L87              Difference]: Start difference. First operand 16972 states and 28271 transitions. Second operand  has 5 states, 5 states have (on average 1466.8) internal successors, (7334), 5 states have internal predecessors, (7334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 20:43:36,862 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 20:43:36,862 INFO  L93              Difference]: Finished difference Result 38368 states and 63915 transitions.
[2023-12-25 20:43:36,862 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2023-12-25 20:43:36,864 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 1466.8) internal successors, (7334), 5 states have internal predecessors, (7334), 0 states have call successors, (0), 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 7334
[2023-12-25 20:43:36,868 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 20:43:36,888 INFO  L225             Difference]: With dead ends: 38368
[2023-12-25 20:43:36,888 INFO  L226             Difference]: Without dead ends: 21922
[2023-12-25 20:43:36,901 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 7335 GetRequests, 7330 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42
[2023-12-25 20:43:36,902 INFO  L413           NwaCegarLoop]: 25332 mSDtfsCounter, 6946 mSDsluCounter, 58975 mSDsCounter, 0 mSdLazyCounter, 15167 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6946 SdHoareTripleChecker+Valid, 84307 SdHoareTripleChecker+Invalid, 15167 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15167 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.4s IncrementalHoareTripleChecker+Time
[2023-12-25 20:43:36,902 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [6946 Valid, 84307 Invalid, 15167 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 15167 Invalid, 0 Unknown, 0 Unchecked, 7.4s Time]
[2023-12-25 20:43:36,921 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 21922 states.
[2023-12-25 20:43:37,107 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 21922 to 19750.
[2023-12-25 20:43:37,128 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 19750 states, 19749 states have (on average 1.6658564990632436) internal successors, (32899), 19749 states have internal predecessors, (32899), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 20:43:37,150 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 19750 states to 19750 states and 32899 transitions.
[2023-12-25 20:43:37,150 INFO  L78                 Accepts]: Start accepts. Automaton has 19750 states and 32899 transitions. Word has length 7334
[2023-12-25 20:43:37,154 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 20:43:37,154 INFO  L495      AbstractCegarLoop]: Abstraction has 19750 states and 32899 transitions.
[2023-12-25 20:43:37,155 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 1466.8) internal successors, (7334), 5 states have internal predecessors, (7334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 20:43:37,155 INFO  L276                IsEmpty]: Start isEmpty. Operand 19750 states and 32899 transitions.
[2023-12-25 20:43:37,489 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 7336
[2023-12-25 20:43:37,490 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 20:43:37,492 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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[2023-12-25 20:43:37,617 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0
[2023-12-25 20:43:37,706 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17
[2023-12-25 20:43:37,707 INFO  L420      AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 20:43:37,707 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 20:43:37,708 INFO  L85        PathProgramCache]: Analyzing trace with hash -1714114556, now seen corresponding path program 1 times
[2023-12-25 20:43:37,709 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 20:43:37,709 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1897723357]
[2023-12-25 20:43:37,709 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 20:43:37,709 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 20:43:38,297 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 20:43:38,297 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1104167789]
[2023-12-25 20:43:38,299 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 20:43:38,299 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 20:43:38,299 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 20:43:38,312 INFO  L229       MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-25 20:43:38,502 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process
[2023-12-25 20:43:48,061 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 20:43:48,293 INFO  L262         TraceCheckSpWp]: Trace formula consists of 36624 conjuncts, 40 conjunts are in the unsatisfiable core
[2023-12-25 20:43:48,371 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 20:43:50,645 INFO  L134       CoverageAnalysis]: Checked inductivity of 132 backedges. 132 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-25 20:43:50,646 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 20:43:50,646 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 20:43:50,646 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1897723357]
[2023-12-25 20:43:50,646 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 20:43:50,646 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1104167789]
[2023-12-25 20:43:50,646 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1104167789] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 20:43:50,646 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 20:43:50,647 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15
[2023-12-25 20:43:50,647 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1345747680]
[2023-12-25 20:43:50,647 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 20:43:50,650 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 15 states
[2023-12-25 20:43:50,650 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 20:43:50,654 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants.
[2023-12-25 20:43:50,654 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210
[2023-12-25 20:43:50,654 INFO  L87              Difference]: Start difference. First operand 19750 states and 32899 transitions. Second operand  has 15 states, 15 states have (on average 489.0) internal successors, (7335), 15 states have internal predecessors, (7335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 20:46:21,231 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 20:46:21,231 INFO  L93              Difference]: Finished difference Result 258466 states and 430491 transitions.
[2023-12-25 20:46:21,232 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. 
[2023-12-25 20:46:21,233 INFO  L78                 Accepts]: Start accepts. Automaton has  has 15 states, 15 states have (on average 489.0) internal successors, (7335), 15 states have internal predecessors, (7335), 0 states have call successors, (0), 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 7335
[2023-12-25 20:46:21,236 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 20:46:21,502 INFO  L225             Difference]: With dead ends: 258466
[2023-12-25 20:46:21,502 INFO  L226             Difference]: Without dead ends: 239242
[2023-12-25 20:46:21,566 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 7427 GetRequests, 7339 SyntacticMatches, 0 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2470 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1205, Invalid=6805, Unknown=0, NotChecked=0, Total=8010
[2023-12-25 20:46:21,566 INFO  L413           NwaCegarLoop]: 92765 mSDtfsCounter, 276516 mSDsluCounter, 805856 mSDsCounter, 0 mSdLazyCounter, 343957 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 114.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 276516 SdHoareTripleChecker+Valid, 898621 SdHoareTripleChecker+Invalid, 343960 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.3s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 343957 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 135.7s IncrementalHoareTripleChecker+Time
[2023-12-25 20:46:21,567 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [276516 Valid, 898621 Invalid, 343960 Unknown, 0 Unchecked, 2.3s Time], IncrementalHoareTripleChecker [3 Valid, 343957 Invalid, 0 Unknown, 0 Unchecked, 135.7s Time]
[2023-12-25 20:46:21,723 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 239242 states.
[2023-12-25 20:46:22,647 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 239242 to 19764.
[2023-12-25 20:46:22,665 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 19764 states, 19763 states have (on average 1.6655366088144512) internal successors, (32916), 19763 states have internal predecessors, (32916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 20:46:22,685 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 19764 states to 19764 states and 32916 transitions.
[2023-12-25 20:46:22,685 INFO  L78                 Accepts]: Start accepts. Automaton has 19764 states and 32916 transitions. Word has length 7335
[2023-12-25 20:46:22,688 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 20:46:22,688 INFO  L495      AbstractCegarLoop]: Abstraction has 19764 states and 32916 transitions.
[2023-12-25 20:46:22,689 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 15 states, 15 states have (on average 489.0) internal successors, (7335), 15 states have internal predecessors, (7335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 20:46:22,689 INFO  L276                IsEmpty]: Start isEmpty. Operand 19764 states and 32916 transitions.
[2023-12-25 20:46:23,039 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 7336
[2023-12-25 20:46:23,040 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 20:46:23,056 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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[2023-12-25 20:46:23,189 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0
[2023-12-25 20:46:23,270 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 20:46:23,271 INFO  L420      AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 20:46:23,271 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 20:46:23,272 INFO  L85        PathProgramCache]: Analyzing trace with hash -1600692474, now seen corresponding path program 1 times
[2023-12-25 20:46:23,272 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 20:46:23,272 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [672202041]
[2023-12-25 20:46:23,273 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 20:46:23,273 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 20:46:23,939 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 20:46:23,940 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1926967812]
[2023-12-25 20:46:23,941 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 20:46:23,941 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 20:46:23,942 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 20:46:23,953 INFO  L229       MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-25 20:46:24,177 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process
[2023-12-25 20:46:33,444 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 20:46:33,667 INFO  L262         TraceCheckSpWp]: Trace formula consists of 36625 conjuncts, 72 conjunts are in the unsatisfiable core
[2023-12-25 20:46:33,751 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 20:46:52,439 INFO  L134       CoverageAnalysis]: Checked inductivity of 132 backedges. 132 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-25 20:46:52,444 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 20:46:52,444 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 20:46:52,444 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [672202041]
[2023-12-25 20:46:52,445 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 20:46:52,445 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1926967812]
[2023-12-25 20:46:52,445 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1926967812] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 20:46:52,445 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 20:46:52,446 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28
[2023-12-25 20:46:52,446 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2099041106]
[2023-12-25 20:46:52,446 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 20:46:52,452 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 28 states
[2023-12-25 20:46:52,452 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 20:46:52,456 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants.
[2023-12-25 20:46:52,457 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=701, Unknown=0, NotChecked=0, Total=756
[2023-12-25 20:46:52,458 INFO  L87              Difference]: Start difference. First operand 19764 states and 32916 transitions. Second operand  has 28 states, 28 states have (on average 261.9642857142857) internal successors, (7335), 28 states have internal predecessors, (7335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 20:47:10,253 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 20:47:10,253 INFO  L93              Difference]: Finished difference Result 228057 states and 379758 transitions.
[2023-12-25 20:47:10,253 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 184 states. 
[2023-12-25 20:47:10,255 INFO  L78                 Accepts]: Start accepts. Automaton has  has 28 states, 28 states have (on average 261.9642857142857) internal successors, (7335), 28 states have internal predecessors, (7335), 0 states have call successors, (0), 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 7335
[2023-12-25 20:47:10,260 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 20:47:10,464 INFO  L225             Difference]: With dead ends: 228057
[2023-12-25 20:47:10,464 INFO  L226             Difference]: Without dead ends: 208819
[2023-12-25 20:47:10,503 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 7541 GetRequests, 7334 SyntacticMatches, 0 SemanticMatches, 207 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17777 ImplicationChecksByTransitivity, 7.6s TimeCoverageRelationStatistics Valid=7706, Invalid=35766, Unknown=0, NotChecked=0, Total=43472
[2023-12-25 20:47:10,505 INFO  L413           NwaCegarLoop]: 34674 mSDtfsCounter, 1167168 mSDsluCounter, 776313 mSDsCounter, 0 mSdLazyCounter, 1566 mSolverCounterSat, 96 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1167168 SdHoareTripleChecker+Valid, 810987 SdHoareTripleChecker+Invalid, 1662 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.8s SdHoareTripleChecker+Time, 96 IncrementalHoareTripleChecker+Valid, 1566 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time
[2023-12-25 20:47:10,505 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [1167168 Valid, 810987 Invalid, 1662 Unknown, 0 Unchecked, 1.8s Time], IncrementalHoareTripleChecker [96 Valid, 1566 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time]
[2023-12-25 20:47:10,625 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 208819 states.
[2023-12-25 20:47:11,447 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 208819 to 33618.
[2023-12-25 20:47:11,476 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 33618 states, 33617 states have (on average 1.6652883957521492) internal successors, (55982), 33617 states have internal predecessors, (55982), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 20:47:11,512 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 33618 states to 33618 states and 55982 transitions.
[2023-12-25 20:47:11,512 INFO  L78                 Accepts]: Start accepts. Automaton has 33618 states and 55982 transitions. Word has length 7335
[2023-12-25 20:47:11,515 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 20:47:11,515 INFO  L495      AbstractCegarLoop]: Abstraction has 33618 states and 55982 transitions.
[2023-12-25 20:47:11,516 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 28 states, 28 states have (on average 261.9642857142857) internal successors, (7335), 28 states have internal predecessors, (7335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 20:47:11,516 INFO  L276                IsEmpty]: Start isEmpty. Operand 33618 states and 55982 transitions.
[2023-12-25 20:47:11,963 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 7337
[2023-12-25 20:47:11,963 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 20:47:11,965 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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[2023-12-25 20:47:12,112 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0
[2023-12-25 20:47:12,169 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 20:47:12,172 INFO  L420      AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 20:47:12,172 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 20:47:12,173 INFO  L85        PathProgramCache]: Analyzing trace with hash 802456356, now seen corresponding path program 1 times
[2023-12-25 20:47:12,173 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 20:47:12,173 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1809581044]
[2023-12-25 20:47:12,273 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 20:47:12,273 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 20:47:12,825 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 20:47:12,826 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1376233796]
[2023-12-25 20:47:12,827 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 20:47:12,827 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 20:47:12,827 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 20:47:12,828 INFO  L229       MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-25 20:47:12,830 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process
[2023-12-25 20:47:27,896 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 20:47:28,144 INFO  L262         TraceCheckSpWp]: Trace formula consists of 36628 conjuncts, 166 conjunts are in the unsatisfiable core
[2023-12-25 20:47:28,505 INFO  L285         TraceCheckSpWp]: Computing forward predicates...