/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation true -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.lifts.3.prop1-back-serstep.c


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


This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m
[2023-12-25 19:29:34,396 INFO  L188        SettingsManager]: Resetting all preferences to default values...
[2023-12-25 19:29:34,486 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 19:29:34,492 WARN  L101        SettingsManager]: Preference file contains the following unknown settings:
[2023-12-25 19:29:34,492 WARN  L103        SettingsManager]:   * de.uni_freiburg.informatik.ultimate.core.Log level for class
[2023-12-25 19:29:34,523 INFO  L130        SettingsManager]: Preferences different from defaults after loading the file:
[2023-12-25 19:29:34,523 INFO  L151        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2023-12-25 19:29:34,524 INFO  L153        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2023-12-25 19:29:34,524 INFO  L151        SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults:
[2023-12-25 19:29:34,528 INFO  L153        SettingsManager]:  * Use memory slicer=true
[2023-12-25 19:29:34,528 INFO  L151        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2023-12-25 19:29:34,529 INFO  L153        SettingsManager]:  * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2023-12-25 19:29:34,529 INFO  L151        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2023-12-25 19:29:34,530 INFO  L153        SettingsManager]:  * Create parallel compositions if possible=false
[2023-12-25 19:29:34,530 INFO  L153        SettingsManager]:  * Use SBE=true
[2023-12-25 19:29:34,531 INFO  L151        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2023-12-25 19:29:34,531 INFO  L153        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2023-12-25 19:29:34,531 INFO  L153        SettingsManager]:  * Overapproximate operations on floating types=true
[2023-12-25 19:29:34,531 INFO  L153        SettingsManager]:  * Check division by zero=IGNORE
[2023-12-25 19:29:34,531 INFO  L153        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2023-12-25 19:29:34,532 INFO  L153        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2023-12-25 19:29:34,533 INFO  L153        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2023-12-25 19:29:34,533 INFO  L153        SettingsManager]:  * Allow undefined functions=false
[2023-12-25 19:29:34,533 INFO  L153        SettingsManager]:  * Check if freed pointer was valid=false
[2023-12-25 19:29:34,534 INFO  L153        SettingsManager]:  * Use constant arrays=true
[2023-12-25 19:29:34,534 INFO  L151        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2023-12-25 19:29:34,534 INFO  L153        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2023-12-25 19:29:34,534 INFO  L153        SettingsManager]:  * Only consider context switches at boundaries of atomic blocks=true
[2023-12-25 19:29:34,535 INFO  L153        SettingsManager]:  * SMT solver=External_DefaultMode
[2023-12-25 19:29:34,535 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2023-12-25 19:29:34,536 INFO  L151        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2023-12-25 19:29:34,536 INFO  L153        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2023-12-25 19:29:34,536 INFO  L153        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopHeads
[2023-12-25 19:29:34,536 INFO  L153        SettingsManager]:  * Trace refinement strategy=CAMEL
[2023-12-25 19:29:34,536 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2023-12-25 19:29:34,536 INFO  L153        SettingsManager]:  * Apply one-shot large block encoding in concurrent analysis=false
[2023-12-25 19:29:34,537 INFO  L153        SettingsManager]:  * Automaton type used in concurrency analysis=PETRI_NET
[2023-12-25 19:29:34,537 INFO  L153        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2023-12-25 19:29:34,537 INFO  L153        SettingsManager]:  * Order on configurations for Petri net unfoldings=DBO
[2023-12-25 19:29:34,537 INFO  L153        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2023-12-25 19:29:34,537 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$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true
[2023-12-25 19:29:34,772 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2023-12-25 19:29:34,797 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2023-12-25 19:29:34,799 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2023-12-25 19:29:34,801 INFO  L270        PluginConnector]: Initializing CDTParser...
[2023-12-25 19:29:34,801 INFO  L274        PluginConnector]: CDTParser initialized
[2023-12-25 19:29:34,802 INFO  L431   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.lifts.3.prop1-back-serstep.c
[2023-12-25 19:29:36,071 INFO  L533              CDTParser]: Created temporary CDT project at NULL
[2023-12-25 19:29:36,562 INFO  L384              CDTParser]: Found 1 translation units.
[2023-12-25 19:29:36,562 INFO  L180              CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.lifts.3.prop1-back-serstep.c
[2023-12-25 19:29:36,623 INFO  L427              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/009552636/f8d8964b43dc4ccba19804939fb73f06/FLAGe45e6c6ef
[2023-12-25 19:29:36,637 INFO  L435              CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/009552636/f8d8964b43dc4ccba19804939fb73f06
[2023-12-25 19:29:36,640 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2023-12-25 19:29:36,641 INFO  L133        ToolchainWalker]: Walking toolchain with 5 elements.
[2023-12-25 19:29:36,642 INFO  L112        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2023-12-25 19:29:36,643 INFO  L270        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2023-12-25 19:29:36,647 INFO  L274        PluginConnector]: CACSL2BoogieTranslator initialized
[2023-12-25 19:29:36,648 INFO  L184        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.12 07:29:36" (1/1) ...
[2023-12-25 19:29:36,648 INFO  L204        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@b0c1306 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 07:29:36, skipping insertion in model container
[2023-12-25 19:29:36,649 INFO  L184        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.12 07:29:36" (1/1) ...
[2023-12-25 19:29:36,816 INFO  L177         MainTranslator]: Built tables and reachable declarations
[2023-12-25 19:29:37,090 WARN  L239   ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.lifts.3.prop1-back-serstep.c[1173,1186]
[2023-12-25 19:29:38,199 INFO  L209          PostProcessor]: Analyzing one entry point: main
[2023-12-25 19:29:38,208 INFO  L202         MainTranslator]: Completed pre-run
[2023-12-25 19:29:38,218 WARN  L239   ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.lifts.3.prop1-back-serstep.c[1173,1186]
[2023-12-25 19:29:38,972 INFO  L209          PostProcessor]: Analyzing one entry point: main
[2023-12-25 19:29:38,984 INFO  L206         MainTranslator]: Completed translation
[2023-12-25 19:29:38,984 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 07:29:38 WrapperNode
[2023-12-25 19:29:38,984 INFO  L131        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2023-12-25 19:29:38,985 INFO  L112        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2023-12-25 19:29:38,985 INFO  L270        PluginConnector]: Initializing Boogie Procedure Inliner...
[2023-12-25 19:29:38,985 INFO  L274        PluginConnector]: Boogie Procedure Inliner initialized
[2023-12-25 19:29:38,995 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 07:29:38" (1/1) ...
[2023-12-25 19:29:39,407 INFO  L184        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 07:29:38" (1/1) ...
[2023-12-25 19:29:44,093 INFO  L138                Inliner]: procedures = 17, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 54135
[2023-12-25 19:29:44,093 INFO  L131        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2023-12-25 19:29:44,094 INFO  L112        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2023-12-25 19:29:44,094 INFO  L270        PluginConnector]: Initializing Boogie Preprocessor...
[2023-12-25 19:29:44,094 INFO  L274        PluginConnector]: Boogie Preprocessor initialized
[2023-12-25 19:29:44,102 INFO  L184        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 07:29:38" (1/1) ...
[2023-12-25 19:29:44,102 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 07:29:38" (1/1) ...
[2023-12-25 19:29:45,079 INFO  L184        PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 07:29:38" (1/1) ...
[2023-12-25 19:29:45,747 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 19:29:45,748 INFO  L184        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 07:29:38" (1/1) ...
[2023-12-25 19:29:45,748 INFO  L184        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 07:29:38" (1/1) ...
[2023-12-25 19:29:46,940 INFO  L184        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 07:29:38" (1/1) ...
[2023-12-25 19:29:47,111 INFO  L184        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 07:29:38" (1/1) ...
[2023-12-25 19:29:47,331 INFO  L184        PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 07:29:38" (1/1) ...
[2023-12-25 19:29:47,516 INFO  L184        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 07:29:38" (1/1) ...
[2023-12-25 19:29:48,235 INFO  L131        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2023-12-25 19:29:48,237 INFO  L112        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2023-12-25 19:29:48,237 INFO  L270        PluginConnector]: Initializing RCFGBuilder...
[2023-12-25 19:29:48,237 INFO  L274        PluginConnector]: RCFGBuilder initialized
[2023-12-25 19:29:48,238 INFO  L184        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 07:29:38" (1/1) ...
[2023-12-25 19:29:48,242 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2023-12-25 19:29:48,262 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 19:29:48,296 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 19:29:48,320 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 19:29:48,326 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2023-12-25 19:29:48,326 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int#0
[2023-12-25 19:29:48,326 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2023-12-25 19:29:48,326 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2023-12-25 19:29:50,531 INFO  L241             CfgBuilder]: Building ICFG
[2023-12-25 19:29:50,534 INFO  L267             CfgBuilder]: Building CFG for each procedure with an implementation
[2023-12-25 19:30:11,886 INFO  L282             CfgBuilder]: Performing block encoding
[2023-12-25 19:30:12,428 INFO  L304             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2023-12-25 19:30:12,428 INFO  L309             CfgBuilder]: Removed 1 assume(true) statements.
[2023-12-25 19:30:12,428 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.12 07:30:12 BoogieIcfgContainer
[2023-12-25 19:30:12,430 INFO  L131        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2023-12-25 19:30:12,432 INFO  L112        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2023-12-25 19:30:12,432 INFO  L270        PluginConnector]: Initializing TraceAbstraction...
[2023-12-25 19:30:12,435 INFO  L274        PluginConnector]: TraceAbstraction initialized
[2023-12-25 19:30:12,435 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.12 07:29:36" (1/3) ...
[2023-12-25 19:30:12,436 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d9fbfc3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.12 07:30:12, skipping insertion in model container
[2023-12-25 19:30:12,436 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 07:29:38" (2/3) ...
[2023-12-25 19:30:12,438 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d9fbfc3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.12 07:30:12, skipping insertion in model container
[2023-12-25 19:30:12,438 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.12 07:30:12" (3/3) ...
[2023-12-25 19:30:12,440 INFO  L112   eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.lifts.3.prop1-back-serstep.c
[2023-12-25 19:30:12,455 INFO  L204   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2023-12-25 19:30:12,455 INFO  L163   ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2023-12-25 19:30:12,660 INFO  L356      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2023-12-25 19:30:12,665 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;@2282834c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2023-12-25 19:30:12,665 INFO  L358      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2023-12-25 19:30:12,708 INFO  L276                IsEmpty]: Start isEmpty. Operand  has 12519 states, 12517 states have (on average 1.670128625069905) internal successors, (20905), 12518 states have internal predecessors, (20905), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 19:30:12,758 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 987
[2023-12-25 19:30:12,758 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 19:30:12,760 INFO  L195           NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:30:12,761 INFO  L420      AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 19:30:12,767 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 19:30:12,769 INFO  L85        PathProgramCache]: Analyzing trace with hash -1249785614, now seen corresponding path program 1 times
[2023-12-25 19:30:12,777 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 19:30:12,777 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [767846284]
[2023-12-25 19:30:12,778 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 19:30:12,778 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 19:30:13,678 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 19:30:17,192 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 19:30:17,193 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 19:30:17,193 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [767846284]
[2023-12-25 19:30:17,194 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [767846284] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 19:30:17,194 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 19:30:17,194 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-12-25 19:30:17,196 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [686330562]
[2023-12-25 19:30:17,197 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 19:30:17,204 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-12-25 19:30:17,204 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 19:30:17,234 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-12-25 19:30:17,235 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-12-25 19:30:17,279 INFO  L87              Difference]: Start difference. First operand  has 12519 states, 12517 states have (on average 1.670128625069905) internal successors, (20905), 12518 states have internal predecessors, (20905), 0 states have call successors, (0), 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 246.5) internal successors, (986), 4 states have internal predecessors, (986), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 19:30:17,833 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 19:30:17,833 INFO  L93              Difference]: Finished difference Result 24749 states and 41331 transitions.
[2023-12-25 19:30:17,834 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-12-25 19:30:17,836 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 246.5) internal successors, (986), 4 states have internal predecessors, (986), 0 states have call successors, (0), 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 986
[2023-12-25 19:30:17,841 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 19:30:17,907 INFO  L225             Difference]: With dead ends: 24749
[2023-12-25 19:30:17,908 INFO  L226             Difference]: Without dead ends: 12519
[2023-12-25 19:30:17,935 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 19:30:17,938 INFO  L413           NwaCegarLoop]: 20898 mSDtfsCounter, 1 mSDsluCounter, 41791 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 62689 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 19:30:17,939 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 62689 Invalid, 13 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-12-25 19:30:17,975 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 12519 states.
[2023-12-25 19:30:18,209 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 12519 to 12519.
[2023-12-25 19:30:18,244 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 12519 states, 12518 states have (on average 1.6698354369707622) internal successors, (20903), 12518 states have internal predecessors, (20903), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 19:30:18,278 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 12519 states to 12519 states and 20903 transitions.
[2023-12-25 19:30:18,279 INFO  L78                 Accepts]: Start accepts. Automaton has 12519 states and 20903 transitions. Word has length 986
[2023-12-25 19:30:18,282 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 19:30:18,283 INFO  L495      AbstractCegarLoop]: Abstraction has 12519 states and 20903 transitions.
[2023-12-25 19:30:18,284 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 246.5) internal successors, (986), 4 states have internal predecessors, (986), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 19:30:18,284 INFO  L276                IsEmpty]: Start isEmpty. Operand 12519 states and 20903 transitions.
[2023-12-25 19:30:18,307 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 988
[2023-12-25 19:30:18,308 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 19:30:18,308 INFO  L195           NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:30:18,309 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2023-12-25 19:30:18,309 INFO  L420      AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 19:30:18,309 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 19:30:18,310 INFO  L85        PathProgramCache]: Analyzing trace with hash -86917530, now seen corresponding path program 1 times
[2023-12-25 19:30:18,310 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 19:30:18,310 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2047409584]
[2023-12-25 19:30:18,311 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 19:30:18,311 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 19:30:18,861 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 19:30:20,186 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 19:30:20,187 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 19:30:20,188 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2047409584]
[2023-12-25 19:30:20,188 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2047409584] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 19:30:20,188 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 19:30:20,188 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-12-25 19:30:20,188 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1142687741]
[2023-12-25 19:30:20,189 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 19:30:20,192 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-12-25 19:30:20,195 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 19:30:20,197 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-12-25 19:30:20,197 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-12-25 19:30:20,198 INFO  L87              Difference]: Start difference. First operand 12519 states and 20903 transitions. Second operand  has 4 states, 4 states have (on average 246.75) internal successors, (987), 4 states have internal predecessors, (987), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 19:30:20,618 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 19:30:20,618 INFO  L93              Difference]: Finished difference Result 24752 states and 41329 transitions.
[2023-12-25 19:30:20,619 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-12-25 19:30:20,620 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 246.75) internal successors, (987), 4 states have internal predecessors, (987), 0 states have call successors, (0), 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 987
[2023-12-25 19:30:20,622 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 19:30:20,676 INFO  L225             Difference]: With dead ends: 24752
[2023-12-25 19:30:20,676 INFO  L226             Difference]: Without dead ends: 12522
[2023-12-25 19:30:20,694 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 19:30:20,695 INFO  L413           NwaCegarLoop]: 20898 mSDtfsCounter, 1 mSDsluCounter, 41789 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 62687 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 19:30:20,696 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 62687 Invalid, 15 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-12-25 19:30:20,718 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 12522 states.
[2023-12-25 19:30:21,014 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 12522 to 12521.
[2023-12-25 19:30:21,040 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 12521 states, 12520 states have (on average 1.6697284345047922) internal successors, (20905), 12520 states have internal predecessors, (20905), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 19:30:21,074 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 12521 states to 12521 states and 20905 transitions.
[2023-12-25 19:30:21,074 INFO  L78                 Accepts]: Start accepts. Automaton has 12521 states and 20905 transitions. Word has length 987
[2023-12-25 19:30:21,076 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 19:30:21,076 INFO  L495      AbstractCegarLoop]: Abstraction has 12521 states and 20905 transitions.
[2023-12-25 19:30:21,076 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 246.75) internal successors, (987), 4 states have internal predecessors, (987), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 19:30:21,077 INFO  L276                IsEmpty]: Start isEmpty. Operand 12521 states and 20905 transitions.
[2023-12-25 19:30:21,099 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 989
[2023-12-25 19:30:21,099 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 19:30:21,100 INFO  L195           NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:30:21,100 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2023-12-25 19:30:21,101 INFO  L420      AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 19:30:21,108 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 19:30:21,108 INFO  L85        PathProgramCache]: Analyzing trace with hash -1129862642, now seen corresponding path program 1 times
[2023-12-25 19:30:21,108 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 19:30:21,109 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [524446757]
[2023-12-25 19:30:21,109 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 19:30:21,110 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 19:30:21,560 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 19:30:22,983 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 19:30:22,983 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 19:30:22,984 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [524446757]
[2023-12-25 19:30:22,984 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [524446757] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 19:30:22,984 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 19:30:22,984 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-12-25 19:30:22,984 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [967868891]
[2023-12-25 19:30:22,985 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 19:30:22,986 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-12-25 19:30:22,986 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 19:30:22,988 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-12-25 19:30:22,990 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-12-25 19:30:22,990 INFO  L87              Difference]: Start difference. First operand 12521 states and 20905 transitions. Second operand  has 4 states, 4 states have (on average 247.0) internal successors, (988), 4 states have internal predecessors, (988), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 19:30:23,720 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 19:30:23,721 INFO  L93              Difference]: Finished difference Result 36979 states and 61744 transitions.
[2023-12-25 19:30:23,721 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2023-12-25 19:30:23,722 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 247.0) internal successors, (988), 4 states have internal predecessors, (988), 0 states have call successors, (0), 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 988
[2023-12-25 19:30:23,724 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 19:30:23,770 INFO  L225             Difference]: With dead ends: 36979
[2023-12-25 19:30:23,771 INFO  L226             Difference]: Without dead ends: 24747
[2023-12-25 19:30:23,796 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 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 19:30:23,798 INFO  L413           NwaCegarLoop]: 22863 mSDtfsCounter, 20411 mSDsluCounter, 43752 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20411 SdHoareTripleChecker+Valid, 66615 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-12-25 19:30:23,799 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [20411 Valid, 66615 Invalid, 19 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-12-25 19:30:23,831 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 24747 states.
[2023-12-25 19:30:24,060 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 24747 to 12523.
[2023-12-25 19:30:24,080 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 12523 states, 12522 states have (on average 1.6696214662194537) internal successors, (20907), 12522 states have internal predecessors, (20907), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 19:30:24,106 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 12523 states to 12523 states and 20907 transitions.
[2023-12-25 19:30:24,106 INFO  L78                 Accepts]: Start accepts. Automaton has 12523 states and 20907 transitions. Word has length 988
[2023-12-25 19:30:24,107 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 19:30:24,108 INFO  L495      AbstractCegarLoop]: Abstraction has 12523 states and 20907 transitions.
[2023-12-25 19:30:24,109 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 247.0) internal successors, (988), 4 states have internal predecessors, (988), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 19:30:24,110 INFO  L276                IsEmpty]: Start isEmpty. Operand 12523 states and 20907 transitions.
[2023-12-25 19:30:24,119 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 990
[2023-12-25 19:30:24,120 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 19:30:24,120 INFO  L195           NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:30:24,120 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2023-12-25 19:30:24,121 INFO  L420      AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 19:30:24,121 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 19:30:24,121 INFO  L85        PathProgramCache]: Analyzing trace with hash -776704178, now seen corresponding path program 1 times
[2023-12-25 19:30:24,121 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 19:30:24,122 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [844552262]
[2023-12-25 19:30:24,122 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 19:30:24,122 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 19:30:24,692 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 19:30:26,178 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 19:30:26,179 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 19:30:26,179 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [844552262]
[2023-12-25 19:30:26,179 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [844552262] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 19:30:26,179 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 19:30:26,179 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-12-25 19:30:26,179 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [578290238]
[2023-12-25 19:30:26,180 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 19:30:26,181 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-12-25 19:30:26,181 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 19:30:26,182 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-12-25 19:30:26,182 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2023-12-25 19:30:26,183 INFO  L87              Difference]: Start difference. First operand 12523 states and 20907 transitions. Second operand  has 5 states, 5 states have (on average 197.8) internal successors, (989), 4 states have internal predecessors, (989), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 19:30:26,918 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 19:30:26,918 INFO  L93              Difference]: Finished difference Result 38164 states and 63715 transitions.
[2023-12-25 19:30:26,919 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2023-12-25 19:30:26,919 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 197.8) internal successors, (989), 4 states have internal predecessors, (989), 0 states have call successors, (0), 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 989
[2023-12-25 19:30:26,921 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 19:30:26,975 INFO  L225             Difference]: With dead ends: 38164
[2023-12-25 19:30:26,975 INFO  L226             Difference]: Without dead ends: 25930
[2023-12-25 19:30:27,000 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56
[2023-12-25 19:30:27,001 INFO  L413           NwaCegarLoop]: 22862 mSDtfsCounter, 83122 mSDsluCounter, 41790 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83122 SdHoareTripleChecker+Valid, 64652 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-12-25 19:30:27,001 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [83122 Valid, 64652 Invalid, 16 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-12-25 19:30:27,037 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 25930 states.
[2023-12-25 19:30:27,320 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 25930 to 13702.
[2023-12-25 19:30:27,341 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 13702 states, 13701 states have (on average 1.669367199474491) internal successors, (22872), 13701 states have internal predecessors, (22872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 19:30:27,371 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 13702 states to 13702 states and 22872 transitions.
[2023-12-25 19:30:27,371 INFO  L78                 Accepts]: Start accepts. Automaton has 13702 states and 22872 transitions. Word has length 989
[2023-12-25 19:30:27,373 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 19:30:27,373 INFO  L495      AbstractCegarLoop]: Abstraction has 13702 states and 22872 transitions.
[2023-12-25 19:30:27,374 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 197.8) internal successors, (989), 4 states have internal predecessors, (989), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 19:30:27,374 INFO  L276                IsEmpty]: Start isEmpty. Operand 13702 states and 22872 transitions.
[2023-12-25 19:30:28,059 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 8925
[2023-12-25 19:30:28,060 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 19:30:28,064 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-12-25 19:30:28,065 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3
[2023-12-25 19:30:28,065 INFO  L420      AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 19:30:28,065 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 19:30:28,069 INFO  L85        PathProgramCache]: Analyzing trace with hash 815499983, now seen corresponding path program 1 times
[2023-12-25 19:30:28,069 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 19:30:28,069 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [459772666]
[2023-12-25 19:30:28,070 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 19:30:28,070 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 19:30:28,941 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 19:30:28,942 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [877499576]
[2023-12-25 19:30:28,944 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 19:30:28,945 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 19:30:28,946 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 19:30:28,948 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 19:30:28,956 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 19:30:39,332 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 19:30:39,600 INFO  L262         TraceCheckSpWp]: Trace formula consists of 39675 conjuncts, 6 conjunts are in the unsatisfiable core
[2023-12-25 19:30:39,807 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 19:30:40,095 INFO  L134       CoverageAnalysis]: Checked inductivity of 792 backedges. 792 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-25 19:30:40,095 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 19:30:40,095 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 19:30:40,095 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [459772666]
[2023-12-25 19:30:40,096 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 19:30:40,096 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [877499576]
[2023-12-25 19:30:40,096 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [877499576] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 19:30:40,096 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 19:30:40,097 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-12-25 19:30:40,097 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1818820456]
[2023-12-25 19:30:40,097 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 19:30:40,106 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-12-25 19:30:40,106 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 19:30:40,114 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-12-25 19:30:40,114 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-12-25 19:30:40,117 INFO  L87              Difference]: Start difference. First operand 13702 states and 22872 transitions. Second operand  has 4 states, 4 states have (on average 2231.0) internal successors, (8924), 4 states have internal predecessors, (8924), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 19:30:40,368 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 19:30:40,368 INFO  L93              Difference]: Finished difference Result 25946 states and 43314 transitions.
[2023-12-25 19:30:40,369 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-12-25 19:30:40,372 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 2231.0) internal successors, (8924), 4 states have internal predecessors, (8924), 0 states have call successors, (0), 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 8924
[2023-12-25 19:30:40,373 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 19:30:40,399 INFO  L225             Difference]: With dead ends: 25946
[2023-12-25 19:30:40,399 INFO  L226             Difference]: Without dead ends: 13712
[2023-12-25 19:30:40,415 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 8923 GetRequests, 8921 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 19:30:40,416 INFO  L413           NwaCegarLoop]: 20898 mSDtfsCounter, 12 mSDsluCounter, 41786 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 62684 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-12-25 19:30:40,416 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 62684 Invalid, 18 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-12-25 19:30:40,434 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 13712 states.
[2023-12-25 19:30:40,591 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 13712 to 13704.
[2023-12-25 19:30:40,608 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 13704 states, 13703 states have (on average 1.6692695030285338) internal successors, (22874), 13703 states have internal predecessors, (22874), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 19:30:40,630 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 13704 states to 13704 states and 22874 transitions.
[2023-12-25 19:30:40,631 INFO  L78                 Accepts]: Start accepts. Automaton has 13704 states and 22874 transitions. Word has length 8924
[2023-12-25 19:30:40,633 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 19:30:40,633 INFO  L495      AbstractCegarLoop]: Abstraction has 13704 states and 22874 transitions.
[2023-12-25 19:30:40,636 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 2231.0) internal successors, (8924), 4 states have internal predecessors, (8924), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 19:30:40,636 INFO  L276                IsEmpty]: Start isEmpty. Operand 13704 states and 22874 transitions.
[2023-12-25 19:30:41,282 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 8925
[2023-12-25 19:30:41,282 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 19:30:41,286 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-12-25 19:30:41,400 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0
[2023-12-25 19:30:41,491 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 19:30:41,491 INFO  L420      AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 19:30:41,492 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 19:30:41,494 INFO  L85        PathProgramCache]: Analyzing trace with hash -747649471, now seen corresponding path program 1 times
[2023-12-25 19:30:41,494 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 19:30:41,494 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1130718711]
[2023-12-25 19:30:41,495 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 19:30:41,495 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 19:30:42,312 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 19:30:42,313 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1383941428]
[2023-12-25 19:30:42,315 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 19:30:42,315 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 19:30:42,315 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 19:30:42,316 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 19:30:42,323 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 19:30:52,271 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 19:30:52,564 INFO  L262         TraceCheckSpWp]: Trace formula consists of 39676 conjuncts, 6 conjunts are in the unsatisfiable core
[2023-12-25 19:30:52,726 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 19:30:52,902 INFO  L134       CoverageAnalysis]: Checked inductivity of 792 backedges. 792 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-25 19:30:52,903 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 19:30:52,903 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 19:30:52,903 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1130718711]
[2023-12-25 19:30:52,904 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 19:30:52,905 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1383941428]
[2023-12-25 19:30:52,905 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1383941428] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 19:30:52,905 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 19:30:52,906 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-12-25 19:30:52,907 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1327130375]
[2023-12-25 19:30:52,907 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 19:30:52,915 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-12-25 19:30:52,915 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 19:30:52,923 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-12-25 19:30:52,924 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-12-25 19:30:52,927 INFO  L87              Difference]: Start difference. First operand 13704 states and 22874 transitions. Second operand  has 4 states, 4 states have (on average 2231.0) internal successors, (8924), 4 states have internal predecessors, (8924), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 19:30:53,334 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 19:30:53,335 INFO  L93              Difference]: Finished difference Result 25949 states and 43316 transitions.
[2023-12-25 19:30:53,335 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-12-25 19:30:53,337 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 2231.0) internal successors, (8924), 4 states have internal predecessors, (8924), 0 states have call successors, (0), 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 8924
[2023-12-25 19:30:53,339 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 19:30:53,362 INFO  L225             Difference]: With dead ends: 25949
[2023-12-25 19:30:53,363 INFO  L226             Difference]: Without dead ends: 13713
[2023-12-25 19:30:53,373 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 8923 GetRequests, 8921 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 19:30:53,376 INFO  L413           NwaCegarLoop]: 20898 mSDtfsCounter, 12 mSDsluCounter, 41786 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 62684 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-12-25 19:30:53,376 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 62684 Invalid, 17 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-12-25 19:30:53,394 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 13713 states.
[2023-12-25 19:30:53,542 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 13713 to 13705.
[2023-12-25 19:30:53,560 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 13705 states, 13704 states have (on average 1.6692206654991244) internal successors, (22875), 13704 states have internal predecessors, (22875), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 19:30:53,583 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 13705 states to 13705 states and 22875 transitions.
[2023-12-25 19:30:53,583 INFO  L78                 Accepts]: Start accepts. Automaton has 13705 states and 22875 transitions. Word has length 8924
[2023-12-25 19:30:53,585 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 19:30:53,585 INFO  L495      AbstractCegarLoop]: Abstraction has 13705 states and 22875 transitions.
[2023-12-25 19:30:53,587 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 2231.0) internal successors, (8924), 4 states have internal predecessors, (8924), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 19:30:53,588 INFO  L276                IsEmpty]: Start isEmpty. Operand 13705 states and 22875 transitions.
[2023-12-25 19:30:54,129 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 8925
[2023-12-25 19:30:54,130 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 19:30:54,133 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-12-25 19:30:54,245 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0
[2023-12-25 19:30:54,334 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5
[2023-12-25 19:30:54,334 INFO  L420      AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 19:30:54,335 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 19:30:54,337 INFO  L85        PathProgramCache]: Analyzing trace with hash 806698163, now seen corresponding path program 1 times
[2023-12-25 19:30:54,337 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 19:30:54,337 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1466764610]
[2023-12-25 19:30:54,337 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 19:30:54,338 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 19:30:54,985 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 19:30:54,986 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [339753952]
[2023-12-25 19:30:54,988 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 19:30:54,988 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 19:30:54,988 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 19:30:54,989 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 19:30:54,993 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 19:31:05,106 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 19:31:05,390 INFO  L262         TraceCheckSpWp]: Trace formula consists of 39677 conjuncts, 6 conjunts are in the unsatisfiable core
[2023-12-25 19:31:05,544 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 19:31:05,701 INFO  L134       CoverageAnalysis]: Checked inductivity of 792 backedges. 792 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-25 19:31:05,702 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 19:31:05,702 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 19:31:05,702 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1466764610]
[2023-12-25 19:31:05,702 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 19:31:05,702 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [339753952]
[2023-12-25 19:31:05,702 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [339753952] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 19:31:05,702 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 19:31:05,703 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-12-25 19:31:05,704 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1913837259]
[2023-12-25 19:31:05,704 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 19:31:05,712 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-12-25 19:31:05,712 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 19:31:05,720 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-12-25 19:31:05,720 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-12-25 19:31:05,723 INFO  L87              Difference]: Start difference. First operand 13705 states and 22875 transitions. Second operand  has 4 states, 4 states have (on average 2231.0) internal successors, (8924), 4 states have internal predecessors, (8924), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 19:31:06,119 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 19:31:06,119 INFO  L93              Difference]: Finished difference Result 25951 states and 43318 transitions.
[2023-12-25 19:31:06,120 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-12-25 19:31:06,121 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 2231.0) internal successors, (8924), 4 states have internal predecessors, (8924), 0 states have call successors, (0), 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 8924
[2023-12-25 19:31:06,123 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 19:31:06,147 INFO  L225             Difference]: With dead ends: 25951
[2023-12-25 19:31:06,147 INFO  L226             Difference]: Without dead ends: 13714
[2023-12-25 19:31:06,161 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 8923 GetRequests, 8921 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 19:31:06,162 INFO  L413           NwaCegarLoop]: 20898 mSDtfsCounter, 12 mSDsluCounter, 41786 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 62684 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2023-12-25 19:31:06,162 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 62684 Invalid, 17 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2023-12-25 19:31:06,181 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 13714 states.
[2023-12-25 19:31:06,328 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 13714 to 13706.
[2023-12-25 19:31:06,359 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 13706 states, 13705 states have (on average 1.66917183509668) internal successors, (22876), 13705 states have internal predecessors, (22876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 19:31:06,389 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 13706 states to 13706 states and 22876 transitions.
[2023-12-25 19:31:06,389 INFO  L78                 Accepts]: Start accepts. Automaton has 13706 states and 22876 transitions. Word has length 8924
[2023-12-25 19:31:06,391 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 19:31:06,391 INFO  L495      AbstractCegarLoop]: Abstraction has 13706 states and 22876 transitions.
[2023-12-25 19:31:06,393 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 2231.0) internal successors, (8924), 4 states have internal predecessors, (8924), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 19:31:06,393 INFO  L276                IsEmpty]: Start isEmpty. Operand 13706 states and 22876 transitions.
[2023-12-25 19:31:06,981 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 8925
[2023-12-25 19:31:06,981 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 19:31:06,985 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-12-25 19:31:07,119 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0
[2023-12-25 19:31:07,212 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 19:31:07,212 INFO  L420      AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 19:31:07,213 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 19:31:07,215 INFO  L85        PathProgramCache]: Analyzing trace with hash 1735193381, now seen corresponding path program 1 times
[2023-12-25 19:31:07,215 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 19:31:07,215 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1166395435]
[2023-12-25 19:31:07,216 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 19:31:07,216 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 19:31:07,825 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 19:31:07,826 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1608918727]
[2023-12-25 19:31:07,828 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 19:31:07,828 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 19:31:07,828 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 19:31:07,829 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 19:31:07,847 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 19:31:17,736 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 19:31:18,001 INFO  L262         TraceCheckSpWp]: Trace formula consists of 39678 conjuncts, 6 conjunts are in the unsatisfiable core
[2023-12-25 19:31:18,158 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 19:31:18,401 INFO  L134       CoverageAnalysis]: Checked inductivity of 792 backedges. 792 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-25 19:31:18,401 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 19:31:18,401 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 19:31:18,401 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1166395435]
[2023-12-25 19:31:18,401 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 19:31:18,401 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1608918727]
[2023-12-25 19:31:18,401 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1608918727] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 19:31:18,402 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 19:31:18,402 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-12-25 19:31:18,402 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1058773837]
[2023-12-25 19:31:18,403 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 19:31:18,410 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-12-25 19:31:18,410 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 19:31:18,422 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-12-25 19:31:18,423 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-12-25 19:31:18,425 INFO  L87              Difference]: Start difference. First operand 13706 states and 22876 transitions. Second operand  has 4 states, 4 states have (on average 2231.0) internal successors, (8924), 4 states have internal predecessors, (8924), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 19:31:18,653 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 19:31:18,653 INFO  L93              Difference]: Finished difference Result 25953 states and 43320 transitions.
[2023-12-25 19:31:18,654 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-12-25 19:31:18,656 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 2231.0) internal successors, (8924), 4 states have internal predecessors, (8924), 0 states have call successors, (0), 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 8924
[2023-12-25 19:31:18,657 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 19:31:18,675 INFO  L225             Difference]: With dead ends: 25953
[2023-12-25 19:31:18,675 INFO  L226             Difference]: Without dead ends: 13715
[2023-12-25 19:31:18,691 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 8923 GetRequests, 8921 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 19:31:18,691 INFO  L413           NwaCegarLoop]: 20898 mSDtfsCounter, 12 mSDsluCounter, 41786 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 62684 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-12-25 19:31:18,692 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 62684 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-12-25 19:31:18,709 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 13715 states.
[2023-12-25 19:31:18,855 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 13715 to 13707.
[2023-12-25 19:31:18,875 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 13707 states, 13706 states have (on average 1.669123011819641) internal successors, (22877), 13706 states have internal predecessors, (22877), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 19:31:18,903 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 13707 states to 13707 states and 22877 transitions.
[2023-12-25 19:31:18,903 INFO  L78                 Accepts]: Start accepts. Automaton has 13707 states and 22877 transitions. Word has length 8924
[2023-12-25 19:31:18,905 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 19:31:18,905 INFO  L495      AbstractCegarLoop]: Abstraction has 13707 states and 22877 transitions.
[2023-12-25 19:31:18,908 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 2231.0) internal successors, (8924), 4 states have internal predecessors, (8924), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 19:31:18,908 INFO  L276                IsEmpty]: Start isEmpty. Operand 13707 states and 22877 transitions.
[2023-12-25 19:31:19,579 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 8925
[2023-12-25 19:31:19,579 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 19:31:19,585 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-12-25 19:31:19,705 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 19:31:19,800 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 19:31:19,801 INFO  L420      AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 19:31:19,801 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 19:31:19,804 INFO  L85        PathProgramCache]: Analyzing trace with hash 1049021079, now seen corresponding path program 1 times
[2023-12-25 19:31:19,804 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 19:31:19,804 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1364698578]
[2023-12-25 19:31:19,805 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 19:31:19,805 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 19:31:20,368 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 19:31:20,369 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [86971667]
[2023-12-25 19:31:20,370 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 19:31:20,371 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 19:31:20,371 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 19:31:20,372 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 19:31:20,374 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 19:31:30,364 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 19:31:30,632 INFO  L262         TraceCheckSpWp]: Trace formula consists of 39679 conjuncts, 6 conjunts are in the unsatisfiable core
[2023-12-25 19:31:30,723 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 19:31:30,831 INFO  L134       CoverageAnalysis]: Checked inductivity of 792 backedges. 792 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-25 19:31:30,832 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 19:31:30,832 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 19:31:30,832 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1364698578]
[2023-12-25 19:31:30,832 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 19:31:30,832 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [86971667]
[2023-12-25 19:31:30,832 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [86971667] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 19:31:30,832 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 19:31:30,833 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-12-25 19:31:30,834 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1812348483]
[2023-12-25 19:31:30,834 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 19:31:30,841 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-12-25 19:31:30,842 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 19:31:30,848 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-12-25 19:31:30,849 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-12-25 19:31:30,851 INFO  L87              Difference]: Start difference. First operand 13707 states and 22877 transitions. Second operand  has 4 states, 4 states have (on average 2231.0) internal successors, (8924), 4 states have internal predecessors, (8924), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 19:31:31,093 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 19:31:31,093 INFO  L93              Difference]: Finished difference Result 25955 states and 43322 transitions.
[2023-12-25 19:31:31,094 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-12-25 19:31:31,096 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 2231.0) internal successors, (8924), 4 states have internal predecessors, (8924), 0 states have call successors, (0), 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 8924
[2023-12-25 19:31:31,098 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 19:31:31,113 INFO  L225             Difference]: With dead ends: 25955
[2023-12-25 19:31:31,113 INFO  L226             Difference]: Without dead ends: 13716
[2023-12-25 19:31:31,125 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 8923 GetRequests, 8921 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 19:31:31,126 INFO  L413           NwaCegarLoop]: 20898 mSDtfsCounter, 12 mSDsluCounter, 41786 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 62684 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-12-25 19:31:31,126 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 62684 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-12-25 19:31:31,145 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 13716 states.
[2023-12-25 19:31:31,429 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 13716 to 13708.
[2023-12-25 19:31:31,447 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 13708 states, 13707 states have (on average 1.6690741956664479) internal successors, (22878), 13707 states have internal predecessors, (22878), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 19:31:31,467 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 13708 states to 13708 states and 22878 transitions.
[2023-12-25 19:31:31,467 INFO  L78                 Accepts]: Start accepts. Automaton has 13708 states and 22878 transitions. Word has length 8924
[2023-12-25 19:31:31,470 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 19:31:31,470 INFO  L495      AbstractCegarLoop]: Abstraction has 13708 states and 22878 transitions.
[2023-12-25 19:31:31,472 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 2231.0) internal successors, (8924), 4 states have internal predecessors, (8924), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 19:31:31,472 INFO  L276                IsEmpty]: Start isEmpty. Operand 13708 states and 22878 transitions.
[2023-12-25 19:31:32,002 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 8925
[2023-12-25 19:31:32,002 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 19:31:32,005 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-12-25 19:31:32,110 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0
[2023-12-25 19:31:32,216 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 19:31:32,216 INFO  L420      AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 19:31:32,217 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 19:31:32,219 INFO  L85        PathProgramCache]: Analyzing trace with hash 1158417929, now seen corresponding path program 1 times
[2023-12-25 19:31:32,219 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 19:31:32,219 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1902900716]
[2023-12-25 19:31:32,220 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 19:31:32,220 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 19:31:32,799 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 19:31:32,799 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1263545424]
[2023-12-25 19:31:32,801 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 19:31:32,801 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 19:31:32,801 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 19:31:32,802 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 19:31:32,806 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 19:31:42,657 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 19:31:42,926 INFO  L262         TraceCheckSpWp]: Trace formula consists of 39680 conjuncts, 6 conjunts are in the unsatisfiable core
[2023-12-25 19:31:43,023 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 19:31:43,258 INFO  L134       CoverageAnalysis]: Checked inductivity of 792 backedges. 792 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-25 19:31:43,258 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 19:31:43,259 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 19:31:43,259 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1902900716]
[2023-12-25 19:31:43,259 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 19:31:43,259 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1263545424]
[2023-12-25 19:31:43,259 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1263545424] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 19:31:43,259 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 19:31:43,260 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-12-25 19:31:43,260 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [919719506]
[2023-12-25 19:31:43,261 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 19:31:43,269 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-12-25 19:31:43,269 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 19:31:43,278 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-12-25 19:31:43,278 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-12-25 19:31:43,281 INFO  L87              Difference]: Start difference. First operand 13708 states and 22878 transitions. Second operand  has 4 states, 4 states have (on average 2231.0) internal successors, (8924), 4 states have internal predecessors, (8924), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 19:31:43,512 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 19:31:43,512 INFO  L93              Difference]: Finished difference Result 25957 states and 43324 transitions.
[2023-12-25 19:31:43,513 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-12-25 19:31:43,515 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 2231.0) internal successors, (8924), 4 states have internal predecessors, (8924), 0 states have call successors, (0), 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 8924
[2023-12-25 19:31:43,516 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 19:31:43,529 INFO  L225             Difference]: With dead ends: 25957
[2023-12-25 19:31:43,529 INFO  L226             Difference]: Without dead ends: 13717
[2023-12-25 19:31:43,542 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 8923 GetRequests, 8921 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 19:31:43,543 INFO  L413           NwaCegarLoop]: 20898 mSDtfsCounter, 12 mSDsluCounter, 41786 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 62684 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-12-25 19:31:43,543 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 62684 Invalid, 17 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-12-25 19:31:43,562 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 13717 states.
[2023-12-25 19:31:43,684 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 13717 to 13709.
[2023-12-25 19:31:43,699 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 13709 states, 13708 states have (on average 1.6690253866355413) internal successors, (22879), 13708 states have internal predecessors, (22879), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 19:31:43,720 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 13709 states to 13709 states and 22879 transitions.
[2023-12-25 19:31:43,721 INFO  L78                 Accepts]: Start accepts. Automaton has 13709 states and 22879 transitions. Word has length 8924
[2023-12-25 19:31:43,722 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 19:31:43,723 INFO  L495      AbstractCegarLoop]: Abstraction has 13709 states and 22879 transitions.
[2023-12-25 19:31:43,725 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 2231.0) internal successors, (8924), 4 states have internal predecessors, (8924), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 19:31:43,726 INFO  L276                IsEmpty]: Start isEmpty. Operand 13709 states and 22879 transitions.
[2023-12-25 19:31:44,246 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 8925
[2023-12-25 19:31:44,247 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 19:31:44,250 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-12-25 19:31:44,360 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 19:31:44,469 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 19:31:44,469 INFO  L420      AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 19:31:44,469 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 19:31:44,471 INFO  L85        PathProgramCache]: Analyzing trace with hash -888947845, now seen corresponding path program 1 times
[2023-12-25 19:31:44,472 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 19:31:44,472 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [232941752]
[2023-12-25 19:31:44,472 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 19:31:44,472 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 19:31:45,049 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 19:31:45,050 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [606335151]
[2023-12-25 19:31:45,052 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 19:31:45,052 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 19:31:45,052 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 19:31:45,053 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 19:31:45,054 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 19:31:54,821 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 19:31:55,086 INFO  L262         TraceCheckSpWp]: Trace formula consists of 39681 conjuncts, 6 conjunts are in the unsatisfiable core
[2023-12-25 19:31:55,177 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 19:31:55,272 INFO  L134       CoverageAnalysis]: Checked inductivity of 792 backedges. 792 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-25 19:31:55,272 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 19:31:55,273 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 19:31:55,273 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [232941752]
[2023-12-25 19:31:55,273 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 19:31:55,273 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [606335151]
[2023-12-25 19:31:55,273 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [606335151] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 19:31:55,273 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 19:31:55,274 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-12-25 19:31:55,274 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1523703554]
[2023-12-25 19:31:55,274 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 19:31:55,280 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-12-25 19:31:55,280 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 19:31:55,286 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-12-25 19:31:55,286 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-12-25 19:31:55,287 INFO  L87              Difference]: Start difference. First operand 13709 states and 22879 transitions. Second operand  has 4 states, 4 states have (on average 2231.0) internal successors, (8924), 4 states have internal predecessors, (8924), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 19:31:55,616 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 19:31:55,616 INFO  L93              Difference]: Finished difference Result 25959 states and 43326 transitions.
[2023-12-25 19:31:55,617 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-12-25 19:31:55,619 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 2231.0) internal successors, (8924), 4 states have internal predecessors, (8924), 0 states have call successors, (0), 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 8924
[2023-12-25 19:31:55,620 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 19:31:55,631 INFO  L225             Difference]: With dead ends: 25959
[2023-12-25 19:31:55,631 INFO  L226             Difference]: Without dead ends: 13718
[2023-12-25 19:31:55,641 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 8923 GetRequests, 8921 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 19:31:55,642 INFO  L413           NwaCegarLoop]: 20898 mSDtfsCounter, 12 mSDsluCounter, 41786 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 62684 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-12-25 19:31:55,642 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 62684 Invalid, 17 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-12-25 19:31:55,657 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 13718 states.
[2023-12-25 19:31:55,780 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 13718 to 13710.
[2023-12-25 19:31:55,792 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 13710 states, 13709 states have (on average 1.6689765847253628) internal successors, (22880), 13709 states have internal predecessors, (22880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 19:31:55,811 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 13710 states to 13710 states and 22880 transitions.
[2023-12-25 19:31:55,811 INFO  L78                 Accepts]: Start accepts. Automaton has 13710 states and 22880 transitions. Word has length 8924
[2023-12-25 19:31:55,813 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 19:31:55,813 INFO  L495      AbstractCegarLoop]: Abstraction has 13710 states and 22880 transitions.
[2023-12-25 19:31:55,815 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 2231.0) internal successors, (8924), 4 states have internal predecessors, (8924), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 19:31:55,815 INFO  L276                IsEmpty]: Start isEmpty. Operand 13710 states and 22880 transitions.
[2023-12-25 19:31:56,279 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 8925
[2023-12-25 19:31:56,279 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 19:31:56,281 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-12-25 19:31:56,391 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0
[2023-12-25 19:31:56,496 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 19:31:56,496 INFO  L420      AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 19:31:56,497 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 19:31:56,499 INFO  L85        PathProgramCache]: Analyzing trace with hash -1782221075, now seen corresponding path program 1 times
[2023-12-25 19:31:56,499 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 19:31:56,499 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2064107574]
[2023-12-25 19:31:56,500 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 19:31:56,500 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 19:31:57,157 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 19:31:57,157 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [579210873]
[2023-12-25 19:31:57,159 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 19:31:57,159 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 19:31:57,159 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 19:31:57,160 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 19:31:57,161 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 19:32:07,138 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 19:32:07,428 INFO  L262         TraceCheckSpWp]: Trace formula consists of 39682 conjuncts, 6 conjunts are in the unsatisfiable core
[2023-12-25 19:32:07,514 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 19:32:07,682 INFO  L134       CoverageAnalysis]: Checked inductivity of 792 backedges. 792 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-25 19:32:07,682 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 19:32:07,682 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 19:32:07,682 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2064107574]
[2023-12-25 19:32:07,682 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 19:32:07,682 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [579210873]
[2023-12-25 19:32:07,683 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [579210873] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 19:32:07,683 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 19:32:07,683 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-12-25 19:32:07,684 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [163338898]
[2023-12-25 19:32:07,684 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 19:32:07,689 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-12-25 19:32:07,689 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 19:32:07,693 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-12-25 19:32:07,693 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-12-25 19:32:07,694 INFO  L87              Difference]: Start difference. First operand 13710 states and 22880 transitions. Second operand  has 4 states, 4 states have (on average 2231.0) internal successors, (8924), 4 states have internal predecessors, (8924), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 19:32:07,908 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 19:32:07,908 INFO  L93              Difference]: Finished difference Result 25961 states and 43328 transitions.
[2023-12-25 19:32:07,909 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-12-25 19:32:07,911 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 2231.0) internal successors, (8924), 4 states have internal predecessors, (8924), 0 states have call successors, (0), 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 8924
[2023-12-25 19:32:07,913 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 19:32:07,927 INFO  L225             Difference]: With dead ends: 25961
[2023-12-25 19:32:07,927 INFO  L226             Difference]: Without dead ends: 13719
[2023-12-25 19:32:07,938 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 8923 GetRequests, 8921 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 19:32:07,938 INFO  L413           NwaCegarLoop]: 20898 mSDtfsCounter, 12 mSDsluCounter, 41786 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 62684 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-12-25 19:32:07,939 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 62684 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-12-25 19:32:07,952 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 13719 states.
[2023-12-25 19:32:08,072 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 13719 to 13711.
[2023-12-25 19:32:08,085 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 13711 states, 13710 states have (on average 1.6689277899343544) internal successors, (22881), 13710 states have internal predecessors, (22881), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 19:32:08,100 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 13711 states to 13711 states and 22881 transitions.
[2023-12-25 19:32:08,100 INFO  L78                 Accepts]: Start accepts. Automaton has 13711 states and 22881 transitions. Word has length 8924
[2023-12-25 19:32:08,102 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 19:32:08,102 INFO  L495      AbstractCegarLoop]: Abstraction has 13711 states and 22881 transitions.
[2023-12-25 19:32:08,104 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 2231.0) internal successors, (8924), 4 states have internal predecessors, (8924), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 19:32:08,104 INFO  L276                IsEmpty]: Start isEmpty. Operand 13711 states and 22881 transitions.
[2023-12-25 19:32:08,665 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 8925
[2023-12-25 19:32:08,666 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 19:32:08,668 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-12-25 19:32:08,766 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0
[2023-12-25 19:32:08,868 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11
[2023-12-25 19:32:08,868 INFO  L420      AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 19:32:08,869 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 19:32:08,870 INFO  L85        PathProgramCache]: Analyzing trace with hash 94976351, now seen corresponding path program 1 times
[2023-12-25 19:32:08,870 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 19:32:08,870 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1103875240]
[2023-12-25 19:32:08,871 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 19:32:08,871 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 19:32:09,422 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 19:32:09,422 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1134197532]
[2023-12-25 19:32:09,424 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 19:32:09,424 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 19:32:09,424 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 19:32:09,425 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 19:32:09,427 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 19:32:20,110 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 19:32:20,490 INFO  L262         TraceCheckSpWp]: Trace formula consists of 39683 conjuncts, 6 conjunts are in the unsatisfiable core
[2023-12-25 19:32:20,589 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 19:32:20,787 INFO  L134       CoverageAnalysis]: Checked inductivity of 792 backedges. 792 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-25 19:32:20,787 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 19:32:20,787 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 19:32:20,787 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1103875240]
[2023-12-25 19:32:20,787 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 19:32:20,787 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1134197532]
[2023-12-25 19:32:20,787 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1134197532] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 19:32:20,788 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 19:32:20,789 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-12-25 19:32:20,789 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1926344758]
[2023-12-25 19:32:20,789 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 19:32:20,795 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-12-25 19:32:20,795 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 19:32:20,801 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-12-25 19:32:20,802 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-12-25 19:32:20,805 INFO  L87              Difference]: Start difference. First operand 13711 states and 22881 transitions. Second operand  has 4 states, 4 states have (on average 2231.0) internal successors, (8924), 4 states have internal predecessors, (8924), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 19:32:21,085 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 19:32:21,085 INFO  L93              Difference]: Finished difference Result 25963 states and 43330 transitions.
[2023-12-25 19:32:21,086 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-12-25 19:32:21,088 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 2231.0) internal successors, (8924), 4 states have internal predecessors, (8924), 0 states have call successors, (0), 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 8924
[2023-12-25 19:32:21,090 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 19:32:21,098 INFO  L225             Difference]: With dead ends: 25963
[2023-12-25 19:32:21,098 INFO  L226             Difference]: Without dead ends: 13720
[2023-12-25 19:32:21,103 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 8923 GetRequests, 8921 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 19:32:21,103 INFO  L413           NwaCegarLoop]: 20898 mSDtfsCounter, 12 mSDsluCounter, 41786 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 62684 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-12-25 19:32:21,104 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 62684 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-12-25 19:32:21,114 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 13720 states.
[2023-12-25 19:32:21,200 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 13720 to 13712.
[2023-12-25 19:32:21,212 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 13712 states, 13711 states have (on average 1.6688790022609583) internal successors, (22882), 13711 states have internal predecessors, (22882), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 19:32:21,226 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 13712 states to 13712 states and 22882 transitions.
[2023-12-25 19:32:21,226 INFO  L78                 Accepts]: Start accepts. Automaton has 13712 states and 22882 transitions. Word has length 8924
[2023-12-25 19:32:21,228 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 19:32:21,228 INFO  L495      AbstractCegarLoop]: Abstraction has 13712 states and 22882 transitions.
[2023-12-25 19:32:21,230 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 2231.0) internal successors, (8924), 4 states have internal predecessors, (8924), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 19:32:21,230 INFO  L276                IsEmpty]: Start isEmpty. Operand 13712 states and 22882 transitions.
[2023-12-25 19:32:21,700 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 8925
[2023-12-25 19:32:21,700 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 19:32:21,702 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-12-25 19:32:21,802 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0
[2023-12-25 19:32:21,903 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12
[2023-12-25 19:32:21,903 INFO  L420      AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 19:32:21,904 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 19:32:21,905 INFO  L85        PathProgramCache]: Analyzing trace with hash -157653039, now seen corresponding path program 1 times
[2023-12-25 19:32:21,905 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 19:32:21,905 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1806313426]
[2023-12-25 19:32:21,906 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 19:32:21,906 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 19:32:22,514 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 19:32:22,514 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [716920989]
[2023-12-25 19:32:22,516 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 19:32:22,516 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 19:32:22,516 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 19:32:22,521 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 19:32:22,525 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 19:32:32,192 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 19:32:32,443 INFO  L262         TraceCheckSpWp]: Trace formula consists of 39684 conjuncts, 6 conjunts are in the unsatisfiable core
[2023-12-25 19:32:32,523 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 19:32:32,614 INFO  L134       CoverageAnalysis]: Checked inductivity of 792 backedges. 792 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-25 19:32:32,614 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 19:32:32,614 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 19:32:32,614 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1806313426]
[2023-12-25 19:32:32,614 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 19:32:32,614 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [716920989]
[2023-12-25 19:32:32,614 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [716920989] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 19:32:32,614 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 19:32:32,615 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-12-25 19:32:32,615 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1558501910]
[2023-12-25 19:32:32,615 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 19:32:32,619 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-12-25 19:32:32,620 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 19:32:32,623 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-12-25 19:32:32,624 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-12-25 19:32:32,625 INFO  L87              Difference]: Start difference. First operand 13712 states and 22882 transitions. Second operand  has 4 states, 4 states have (on average 2231.0) internal successors, (8924), 4 states have internal predecessors, (8924), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 19:32:32,945 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 19:32:32,945 INFO  L93              Difference]: Finished difference Result 25965 states and 43332 transitions.
[2023-12-25 19:32:32,946 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-12-25 19:32:32,947 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 2231.0) internal successors, (8924), 4 states have internal predecessors, (8924), 0 states have call successors, (0), 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 8924
[2023-12-25 19:32:32,949 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 19:32:32,959 INFO  L225             Difference]: With dead ends: 25965
[2023-12-25 19:32:32,959 INFO  L226             Difference]: Without dead ends: 13721
[2023-12-25 19:32:32,967 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 8923 GetRequests, 8921 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 19:32:32,968 INFO  L413           NwaCegarLoop]: 20898 mSDtfsCounter, 12 mSDsluCounter, 41786 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 62684 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-12-25 19:32:32,968 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 62684 Invalid, 17 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-12-25 19:32:32,979 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 13721 states.
[2023-12-25 19:32:33,062 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 13721 to 13713.
[2023-12-25 19:32:33,073 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 13713 states, 13712 states have (on average 1.6688302217036173) internal successors, (22883), 13712 states have internal predecessors, (22883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 19:32:33,086 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 13713 states to 13713 states and 22883 transitions.
[2023-12-25 19:32:33,086 INFO  L78                 Accepts]: Start accepts. Automaton has 13713 states and 22883 transitions. Word has length 8924
[2023-12-25 19:32:33,087 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 19:32:33,088 INFO  L495      AbstractCegarLoop]: Abstraction has 13713 states and 22883 transitions.
[2023-12-25 19:32:33,089 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 2231.0) internal successors, (8924), 4 states have internal predecessors, (8924), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 19:32:33,089 INFO  L276                IsEmpty]: Start isEmpty. Operand 13713 states and 22883 transitions.
[2023-12-25 19:32:33,558 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 8925
[2023-12-25 19:32:33,558 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 19:32:33,560 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-12-25 19:32:33,655 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 19:32:33,773 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13
[2023-12-25 19:32:33,774 INFO  L420      AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 19:32:33,774 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 19:32:33,775 INFO  L85        PathProgramCache]: Analyzing trace with hash 1759700803, now seen corresponding path program 1 times
[2023-12-25 19:32:33,775 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 19:32:33,776 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1273542965]
[2023-12-25 19:32:33,777 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 19:32:33,777 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 19:32:34,347 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 19:32:34,348 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1902179459]
[2023-12-25 19:32:34,350 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 19:32:34,350 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 19:32:34,350 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 19:32:34,351 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 19:32:34,370 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 19:32:44,258 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 19:32:44,530 INFO  L262         TraceCheckSpWp]: Trace formula consists of 39685 conjuncts, 6 conjunts are in the unsatisfiable core
[2023-12-25 19:32:44,614 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 19:32:44,771 INFO  L134       CoverageAnalysis]: Checked inductivity of 792 backedges. 792 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-25 19:32:44,771 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 19:32:44,771 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 19:32:44,772 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1273542965]
[2023-12-25 19:32:44,772 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 19:32:44,772 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1902179459]
[2023-12-25 19:32:44,772 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1902179459] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 19:32:44,772 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 19:32:44,773 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-12-25 19:32:44,773 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2097241655]
[2023-12-25 19:32:44,773 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 19:32:44,779 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-12-25 19:32:44,779 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 19:32:44,784 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-12-25 19:32:44,784 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-12-25 19:32:44,786 INFO  L87              Difference]: Start difference. First operand 13713 states and 22883 transitions. Second operand  has 4 states, 4 states have (on average 2231.0) internal successors, (8924), 4 states have internal predecessors, (8924), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 19:32:45,028 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 19:32:45,028 INFO  L93              Difference]: Finished difference Result 25967 states and 43334 transitions.
[2023-12-25 19:32:45,029 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-12-25 19:32:45,031 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 2231.0) internal successors, (8924), 4 states have internal predecessors, (8924), 0 states have call successors, (0), 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 8924
[2023-12-25 19:32:45,033 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 19:32:45,043 INFO  L225             Difference]: With dead ends: 25967
[2023-12-25 19:32:45,043 INFO  L226             Difference]: Without dead ends: 13722
[2023-12-25 19:32:45,053 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 8923 GetRequests, 8921 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 19:32:45,053 INFO  L413           NwaCegarLoop]: 20898 mSDtfsCounter, 12 mSDsluCounter, 41786 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 62684 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-12-25 19:32:45,054 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 62684 Invalid, 17 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-12-25 19:32:45,066 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 13722 states.
[2023-12-25 19:32:45,155 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 13722 to 13714.
[2023-12-25 19:32:45,167 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 13714 states, 13713 states have (on average 1.6687814482607743) internal successors, (22884), 13713 states have internal predecessors, (22884), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 19:32:45,180 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 13714 states to 13714 states and 22884 transitions.
[2023-12-25 19:32:45,180 INFO  L78                 Accepts]: Start accepts. Automaton has 13714 states and 22884 transitions. Word has length 8924
[2023-12-25 19:32:45,182 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 19:32:45,182 INFO  L495      AbstractCegarLoop]: Abstraction has 13714 states and 22884 transitions.
[2023-12-25 19:32:45,184 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 2231.0) internal successors, (8924), 4 states have internal predecessors, (8924), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 19:32:45,184 INFO  L276                IsEmpty]: Start isEmpty. Operand 13714 states and 22884 transitions.
[2023-12-25 19:32:45,694 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 8925
[2023-12-25 19:32:45,694 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 19:32:45,697 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-12-25 19:32:45,793 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0
[2023-12-25 19:32:45,909 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,SelfDestructingSolverStorable14
[2023-12-25 19:32:45,909 INFO  L420      AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 19:32:45,910 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 19:32:45,911 INFO  L85        PathProgramCache]: Analyzing trace with hash -1197113419, now seen corresponding path program 1 times
[2023-12-25 19:32:45,911 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 19:32:45,912 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1064831408]
[2023-12-25 19:32:45,913 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 19:32:45,913 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 19:32:46,456 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 19:32:46,456 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1441037744]
[2023-12-25 19:32:46,458 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 19:32:46,458 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 19:32:46,459 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 19:32:46,460 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 19:32:46,471 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 19:32:56,233 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 19:32:56,484 INFO  L262         TraceCheckSpWp]: Trace formula consists of 39686 conjuncts, 6 conjunts are in the unsatisfiable core
[2023-12-25 19:32:56,579 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 19:32:56,688 INFO  L134       CoverageAnalysis]: Checked inductivity of 792 backedges. 792 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-25 19:32:56,688 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 19:32:56,688 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 19:32:56,688 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1064831408]
[2023-12-25 19:32:56,688 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 19:32:56,688 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1441037744]
[2023-12-25 19:32:56,688 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1441037744] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 19:32:56,689 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 19:32:56,690 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-12-25 19:32:56,690 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1603084467]
[2023-12-25 19:32:56,690 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 19:32:56,696 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-12-25 19:32:56,696 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 19:32:56,701 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-12-25 19:32:56,702 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-12-25 19:32:56,703 INFO  L87              Difference]: Start difference. First operand 13714 states and 22884 transitions. Second operand  has 4 states, 4 states have (on average 2231.0) internal successors, (8924), 4 states have internal predecessors, (8924), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 19:32:57,066 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 19:32:57,066 INFO  L93              Difference]: Finished difference Result 25969 states and 43336 transitions.
[2023-12-25 19:32:57,068 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-12-25 19:32:57,070 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 2231.0) internal successors, (8924), 4 states have internal predecessors, (8924), 0 states have call successors, (0), 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 8924
[2023-12-25 19:32:57,072 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 19:32:57,082 INFO  L225             Difference]: With dead ends: 25969
[2023-12-25 19:32:57,082 INFO  L226             Difference]: Without dead ends: 13723
[2023-12-25 19:32:57,090 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 8923 GetRequests, 8921 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 19:32:57,090 INFO  L413           NwaCegarLoop]: 20898 mSDtfsCounter, 12 mSDsluCounter, 41786 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 62684 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-12-25 19:32:57,090 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 62684 Invalid, 17 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-12-25 19:32:57,104 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 13723 states.
[2023-12-25 19:32:57,220 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 13723 to 13715.
[2023-12-25 19:32:57,231 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 13715 states, 13714 states have (on average 1.6687326819308737) internal successors, (22885), 13714 states have internal predecessors, (22885), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 19:32:57,247 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 13715 states to 13715 states and 22885 transitions.
[2023-12-25 19:32:57,248 INFO  L78                 Accepts]: Start accepts. Automaton has 13715 states and 22885 transitions. Word has length 8924
[2023-12-25 19:32:57,250 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 19:32:57,250 INFO  L495      AbstractCegarLoop]: Abstraction has 13715 states and 22885 transitions.
[2023-12-25 19:32:57,251 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 2231.0) internal successors, (8924), 4 states have internal predecessors, (8924), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 19:32:57,252 INFO  L276                IsEmpty]: Start isEmpty. Operand 13715 states and 22885 transitions.
[2023-12-25 19:32:57,732 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 8925
[2023-12-25 19:32:57,732 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 19:32:57,734 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-12-25 19:32:57,863 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0
[2023-12-25 19:32:57,935 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,SelfDestructingSolverStorable15
[2023-12-25 19:32:57,935 INFO  L420      AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 19:32:57,936 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 19:32:57,937 INFO  L85        PathProgramCache]: Analyzing trace with hash -1419082969, now seen corresponding path program 1 times
[2023-12-25 19:32:57,937 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 19:32:57,937 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1130626150]
[2023-12-25 19:32:57,938 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 19:32:57,938 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 19:32:58,506 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 19:32:58,507 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [301956225]
[2023-12-25 19:32:58,509 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 19:32:58,509 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 19:32:58,509 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 19:32:58,510 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 19:32:58,513 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 19:33:08,260 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 19:33:08,501 INFO  L262         TraceCheckSpWp]: Trace formula consists of 39687 conjuncts, 6 conjunts are in the unsatisfiable core
[2023-12-25 19:33:08,598 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 19:33:08,706 INFO  L134       CoverageAnalysis]: Checked inductivity of 792 backedges. 792 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-25 19:33:08,706 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 19:33:08,706 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 19:33:08,706 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1130626150]
[2023-12-25 19:33:08,706 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 19:33:08,706 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [301956225]
[2023-12-25 19:33:08,707 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [301956225] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 19:33:08,707 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 19:33:08,708 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-12-25 19:33:08,708 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [496838126]
[2023-12-25 19:33:08,708 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 19:33:08,714 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-12-25 19:33:08,714 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 19:33:08,719 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-12-25 19:33:08,719 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-12-25 19:33:08,720 INFO  L87              Difference]: Start difference. First operand 13715 states and 22885 transitions. Second operand  has 4 states, 4 states have (on average 2231.0) internal successors, (8924), 4 states have internal predecessors, (8924), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 19:33:09,049 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 19:33:09,050 INFO  L93              Difference]: Finished difference Result 25971 states and 43338 transitions.
[2023-12-25 19:33:09,050 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-12-25 19:33:09,052 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 2231.0) internal successors, (8924), 4 states have internal predecessors, (8924), 0 states have call successors, (0), 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 8924
[2023-12-25 19:33:09,054 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 19:33:09,065 INFO  L225             Difference]: With dead ends: 25971
[2023-12-25 19:33:09,065 INFO  L226             Difference]: Without dead ends: 13724
[2023-12-25 19:33:09,073 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 8923 GetRequests, 8921 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 19:33:09,074 INFO  L413           NwaCegarLoop]: 20898 mSDtfsCounter, 12 mSDsluCounter, 41786 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 62684 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2023-12-25 19:33:09,074 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 62684 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2023-12-25 19:33:09,085 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 13724 states.
[2023-12-25 19:33:09,179 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 13724 to 13716.
[2023-12-25 19:33:09,191 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 13716 states, 13715 states have (on average 1.6686839227123587) internal successors, (22886), 13715 states have internal predecessors, (22886), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 19:33:09,205 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 13716 states to 13716 states and 22886 transitions.
[2023-12-25 19:33:09,205 INFO  L78                 Accepts]: Start accepts. Automaton has 13716 states and 22886 transitions. Word has length 8924
[2023-12-25 19:33:09,207 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 19:33:09,207 INFO  L495      AbstractCegarLoop]: Abstraction has 13716 states and 22886 transitions.
[2023-12-25 19:33:09,209 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 2231.0) internal successors, (8924), 4 states have internal predecessors, (8924), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 19:33:09,209 INFO  L276                IsEmpty]: Start isEmpty. Operand 13716 states and 22886 transitions.
[2023-12-25 19:33:09,650 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 8925
[2023-12-25 19:33:09,651 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 19:33:09,652 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-12-25 19:33:09,748 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 19:33:09,853 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,SelfDestructingSolverStorable16
[2023-12-25 19:33:09,853 INFO  L420      AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 19:33:09,854 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 19:33:09,854 INFO  L85        PathProgramCache]: Analyzing trace with hash 716542873, now seen corresponding path program 1 times
[2023-12-25 19:33:09,854 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 19:33:09,854 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1142678182]
[2023-12-25 19:33:09,855 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 19:33:09,855 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 19:33:10,441 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 19:33:10,441 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1502925987]
[2023-12-25 19:33:10,443 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 19:33:10,443 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 19:33:10,443 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 19:33:10,445 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 19:33:10,446 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 19:33:20,317 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 19:33:20,578 INFO  L262         TraceCheckSpWp]: Trace formula consists of 39688 conjuncts, 6 conjunts are in the unsatisfiable core
[2023-12-25 19:33:20,655 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 19:33:20,757 INFO  L134       CoverageAnalysis]: Checked inductivity of 792 backedges. 792 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-25 19:33:20,757 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 19:33:20,758 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 19:33:20,758 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1142678182]
[2023-12-25 19:33:20,758 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 19:33:20,758 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1502925987]
[2023-12-25 19:33:20,758 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1502925987] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 19:33:20,758 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 19:33:20,759 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-12-25 19:33:20,759 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [160201644]
[2023-12-25 19:33:20,759 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 19:33:20,765 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-12-25 19:33:20,765 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 19:33:20,770 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-12-25 19:33:20,771 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-12-25 19:33:20,772 INFO  L87              Difference]: Start difference. First operand 13716 states and 22886 transitions. Second operand  has 4 states, 4 states have (on average 2231.0) internal successors, (8924), 4 states have internal predecessors, (8924), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 19:33:21,005 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 19:33:21,005 INFO  L93              Difference]: Finished difference Result 25973 states and 43340 transitions.
[2023-12-25 19:33:21,006 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-12-25 19:33:21,008 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 2231.0) internal successors, (8924), 4 states have internal predecessors, (8924), 0 states have call successors, (0), 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 8924
[2023-12-25 19:33:21,012 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 19:33:21,023 INFO  L225             Difference]: With dead ends: 25973
[2023-12-25 19:33:21,023 INFO  L226             Difference]: Without dead ends: 13725
[2023-12-25 19:33:21,032 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 8923 GetRequests, 8921 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 19:33:21,032 INFO  L413           NwaCegarLoop]: 20898 mSDtfsCounter, 12 mSDsluCounter, 41786 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 62684 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-12-25 19:33:21,033 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 62684 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-12-25 19:33:21,044 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 13725 states.
[2023-12-25 19:33:21,253 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 13725 to 13717.
[2023-12-25 19:33:21,265 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 13717 states, 13716 states have (on average 1.6686351706036746) internal successors, (22887), 13716 states have internal predecessors, (22887), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 19:33:21,281 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 13717 states to 13717 states and 22887 transitions.
[2023-12-25 19:33:21,282 INFO  L78                 Accepts]: Start accepts. Automaton has 13717 states and 22887 transitions. Word has length 8924
[2023-12-25 19:33:21,286 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 19:33:21,286 INFO  L495      AbstractCegarLoop]: Abstraction has 13717 states and 22887 transitions.
[2023-12-25 19:33:21,287 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 2231.0) internal successors, (8924), 4 states have internal predecessors, (8924), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 19:33:21,287 INFO  L276                IsEmpty]: Start isEmpty. Operand 13717 states and 22887 transitions.
[2023-12-25 19:33:21,720 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 8925
[2023-12-25 19:33:21,720 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 19:33:21,722 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-12-25 19:33:21,839 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 19:33:21,947 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 19:33:21,947 INFO  L420      AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 19:33:21,948 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 19:33:21,948 INFO  L85        PathProgramCache]: Analyzing trace with hash -1093598965, now seen corresponding path program 1 times
[2023-12-25 19:33:21,948 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 19:33:21,948 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [749757539]
[2023-12-25 19:33:21,949 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 19:33:21,949 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 19:33:22,538 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 19:33:22,538 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [390252033]
[2023-12-25 19:33:22,540 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 19:33:22,541 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 19:33:22,541 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 19:33:22,542 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 19:33:22,559 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 19:33:32,310 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 19:33:32,582 INFO  L262         TraceCheckSpWp]: Trace formula consists of 39689 conjuncts, 17 conjunts are in the unsatisfiable core
[2023-12-25 19:33:32,723 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 19:33:33,913 INFO  L134       CoverageAnalysis]: Checked inductivity of 792 backedges. 8 proven. 741 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked.
[2023-12-25 19:33:33,913 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-12-25 19:33:34,057 INFO  L134       CoverageAnalysis]: Checked inductivity of 792 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 784 trivial. 0 not checked.
[2023-12-25 19:33:34,057 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 19:33:34,057 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [749757539]
[2023-12-25 19:33:34,057 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 19:33:34,057 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [390252033]
[2023-12-25 19:33:34,057 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [390252033] provided 1 perfect and 1 imperfect interpolant sequences
[2023-12-25 19:33:34,057 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2023-12-25 19:33:34,060 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10
[2023-12-25 19:33:34,060 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [380794590]
[2023-12-25 19:33:34,060 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 19:33:34,066 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-12-25 19:33:34,066 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 19:33:34,071 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-12-25 19:33:34,071 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90
[2023-12-25 19:33:34,072 INFO  L87              Difference]: Start difference. First operand 13717 states and 22887 transitions. Second operand  has 5 states, 5 states have (on average 1628.2) internal successors, (8141), 5 states have internal predecessors, (8141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 19:33:47,116 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 19:33:47,117 INFO  L93              Difference]: Finished difference Result 49495 states and 82279 transitions.
[2023-12-25 19:33:47,117 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2023-12-25 19:33:47,119 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 1628.2) internal successors, (8141), 5 states have internal predecessors, (8141), 0 states have call successors, (0), 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 8924
[2023-12-25 19:33:47,124 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 19:33:47,144 INFO  L225             Difference]: With dead ends: 49495
[2023-12-25 19:33:47,144 INFO  L226             Difference]: Without dead ends: 25959
[2023-12-25 19:33:47,157 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 17847 GetRequests, 17838 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110
[2023-12-25 19:33:47,158 INFO  L413           NwaCegarLoop]: 35601 mSDtfsCounter, 37943 mSDsluCounter, 52005 mSDsCounter, 0 mSdLazyCounter, 19416 mSolverCounterSat, 958 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37943 SdHoareTripleChecker+Valid, 87606 SdHoareTripleChecker+Invalid, 20374 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 958 IncrementalHoareTripleChecker+Valid, 19416 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.4s IncrementalHoareTripleChecker+Time
[2023-12-25 19:33:47,158 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [37943 Valid, 87606 Invalid, 20374 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [958 Valid, 19416 Invalid, 0 Unknown, 0 Unchecked, 12.4s Time]
[2023-12-25 19:33:47,181 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 25959 states.
[2023-12-25 19:33:47,298 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 25959 to 13719.
[2023-12-25 19:33:47,310 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 13719 states, 13718 states have (on average 1.6685376877095786) internal successors, (22889), 13718 states have internal predecessors, (22889), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 19:33:47,323 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 13719 states to 13719 states and 22889 transitions.
[2023-12-25 19:33:47,324 INFO  L78                 Accepts]: Start accepts. Automaton has 13719 states and 22889 transitions. Word has length 8924
[2023-12-25 19:33:47,328 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 19:33:47,328 INFO  L495      AbstractCegarLoop]: Abstraction has 13719 states and 22889 transitions.
[2023-12-25 19:33:47,329 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 1628.2) internal successors, (8141), 5 states have internal predecessors, (8141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 19:33:47,329 INFO  L276                IsEmpty]: Start isEmpty. Operand 13719 states and 22889 transitions.
[2023-12-25 19:33:47,929 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 8926
[2023-12-25 19:33:47,929 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 19:33:47,931 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-12-25 19:33:48,047 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0
[2023-12-25 19:33:48,156 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 19:33:48,156 INFO  L420      AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 19:33:48,157 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 19:33:48,158 INFO  L85        PathProgramCache]: Analyzing trace with hash 259373195, now seen corresponding path program 1 times
[2023-12-25 19:33:48,158 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 19:33:48,158 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [561707828]
[2023-12-25 19:33:48,159 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 19:33:48,159 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 19:33:48,775 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 19:33:48,775 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [278901726]
[2023-12-25 19:33:48,777 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 19:33:48,777 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 19:33:48,777 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 19:33:48,778 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 19:33:48,782 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 19:33:58,772 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 19:33:59,064 INFO  L262         TraceCheckSpWp]: Trace formula consists of 39692 conjuncts, 17 conjunts are in the unsatisfiable core
[2023-12-25 19:33:59,173 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 19:34:00,144 INFO  L134       CoverageAnalysis]: Checked inductivity of 792 backedges. 10 proven. 741 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked.
[2023-12-25 19:34:00,144 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-12-25 19:34:00,428 INFO  L134       CoverageAnalysis]: Checked inductivity of 792 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 782 trivial. 0 not checked.
[2023-12-25 19:34:00,428 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 19:34:00,428 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [561707828]
[2023-12-25 19:34:00,428 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 19:34:00,428 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [278901726]
[2023-12-25 19:34:00,428 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [278901726] provided 1 perfect and 1 imperfect interpolant sequences
[2023-12-25 19:34:00,428 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2023-12-25 19:34:00,430 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10
[2023-12-25 19:34:00,430 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [514341018]
[2023-12-25 19:34:00,430 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 19:34:00,435 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-12-25 19:34:00,435 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 19:34:00,439 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-12-25 19:34:00,439 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90
[2023-12-25 19:34:00,441 INFO  L87              Difference]: Start difference. First operand 13719 states and 22889 transitions. Second operand  has 5 states, 5 states have (on average 1628.8) internal successors, (8144), 5 states have internal predecessors, (8144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 19:34:13,248 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 19:34:13,248 INFO  L93              Difference]: Finished difference Result 49503 states and 82287 transitions.
[2023-12-25 19:34:13,248 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2023-12-25 19:34:13,250 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 1628.8) internal successors, (8144), 5 states have internal predecessors, (8144), 0 states have call successors, (0), 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 8925
[2023-12-25 19:34:13,256 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 19:34:13,280 INFO  L225             Difference]: With dead ends: 49503
[2023-12-25 19:34:13,280 INFO  L226             Difference]: Without dead ends: 25960
[2023-12-25 19:34:13,296 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 17849 GetRequests, 17840 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110
[2023-12-25 19:34:13,296 INFO  L413           NwaCegarLoop]: 35593 mSDtfsCounter, 37937 mSDsluCounter, 51995 mSDsCounter, 0 mSdLazyCounter, 19416 mSolverCounterSat, 958 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37937 SdHoareTripleChecker+Valid, 87588 SdHoareTripleChecker+Invalid, 20374 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 958 IncrementalHoareTripleChecker+Valid, 19416 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.1s IncrementalHoareTripleChecker+Time
[2023-12-25 19:34:13,296 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [37937 Valid, 87588 Invalid, 20374 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [958 Valid, 19416 Invalid, 0 Unknown, 0 Unchecked, 12.1s Time]
[2023-12-25 19:34:13,320 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 25960 states.
[2023-12-25 19:34:13,544 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 25960 to 13721.
[2023-12-25 19:34:13,557 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 13721 states, 13720 states have (on average 1.6684402332361516) internal successors, (22891), 13720 states have internal predecessors, (22891), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 19:34:13,572 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 13721 states to 13721 states and 22891 transitions.
[2023-12-25 19:34:13,573 INFO  L78                 Accepts]: Start accepts. Automaton has 13721 states and 22891 transitions. Word has length 8925
[2023-12-25 19:34:13,577 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 19:34:13,577 INFO  L495      AbstractCegarLoop]: Abstraction has 13721 states and 22891 transitions.
[2023-12-25 19:34:13,578 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 1628.8) internal successors, (8144), 5 states have internal predecessors, (8144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 19:34:13,578 INFO  L276                IsEmpty]: Start isEmpty. Operand 13721 states and 22891 transitions.
[2023-12-25 19:34:14,071 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 8927
[2023-12-25 19:34:14,071 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 19:34:14,073 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-12-25 19:34:14,183 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0
[2023-12-25 19:34:14,273 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 19:34:14,274 INFO  L420      AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 19:34:14,274 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 19:34:14,275 INFO  L85        PathProgramCache]: Analyzing trace with hash -1009372623, now seen corresponding path program 1 times
[2023-12-25 19:34:14,275 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 19:34:14,275 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1009312720]
[2023-12-25 19:34:14,275 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 19:34:14,276 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 19:34:14,864 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 19:34:14,864 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2013007280]
[2023-12-25 19:34:14,866 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 19:34:14,866 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 19:34:14,866 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 19:34:14,867 INFO  L229       MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-25 19:34:14,868 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process
[2023-12-25 19:34:24,848 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 19:34:25,104 INFO  L262         TraceCheckSpWp]: Trace formula consists of 39695 conjuncts, 17 conjunts are in the unsatisfiable core
[2023-12-25 19:34:25,192 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 19:34:26,077 INFO  L134       CoverageAnalysis]: Checked inductivity of 792 backedges. 12 proven. 741 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked.
[2023-12-25 19:34:26,078 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-12-25 19:34:26,299 INFO  L134       CoverageAnalysis]: Checked inductivity of 792 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 780 trivial. 0 not checked.
[2023-12-25 19:34:26,300 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 19:34:26,300 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1009312720]
[2023-12-25 19:34:26,300 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 19:34:26,300 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2013007280]
[2023-12-25 19:34:26,300 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [2013007280] provided 1 perfect and 1 imperfect interpolant sequences
[2023-12-25 19:34:26,300 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2023-12-25 19:34:26,301 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10
[2023-12-25 19:34:26,302 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [151948001]
[2023-12-25 19:34:26,302 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 19:34:26,306 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-12-25 19:34:26,306 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 19:34:26,309 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-12-25 19:34:26,309 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90
[2023-12-25 19:34:26,310 INFO  L87              Difference]: Start difference. First operand 13721 states and 22891 transitions. Second operand  has 5 states, 5 states have (on average 1629.4) internal successors, (8147), 5 states have internal predecessors, (8147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 19:34:37,368 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 19:34:37,368 INFO  L93              Difference]: Finished difference Result 49511 states and 82295 transitions.
[2023-12-25 19:34:37,368 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2023-12-25 19:34:37,370 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 1629.4) internal successors, (8147), 5 states have internal predecessors, (8147), 0 states have call successors, (0), 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 8926
[2023-12-25 19:34:37,375 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 19:34:37,398 INFO  L225             Difference]: With dead ends: 49511
[2023-12-25 19:34:37,398 INFO  L226             Difference]: Without dead ends: 25961
[2023-12-25 19:34:37,411 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 17851 GetRequests, 17842 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110
[2023-12-25 19:34:37,411 INFO  L413           NwaCegarLoop]: 35585 mSDtfsCounter, 55463 mSDsluCounter, 34374 mSDsCounter, 0 mSdLazyCounter, 14176 mSolverCounterSat, 958 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55463 SdHoareTripleChecker+Valid, 69959 SdHoareTripleChecker+Invalid, 15134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 958 IncrementalHoareTripleChecker+Valid, 14176 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.5s IncrementalHoareTripleChecker+Time
[2023-12-25 19:34:37,412 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [55463 Valid, 69959 Invalid, 15134 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [958 Valid, 14176 Invalid, 0 Unknown, 0 Unchecked, 10.5s Time]
[2023-12-25 19:34:37,429 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 25961 states.
[2023-12-25 19:34:37,551 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 25961 to 13723.
[2023-12-25 19:34:37,562 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 13723 states, 13722 states have (on average 1.6683428071709663) internal successors, (22893), 13722 states have internal predecessors, (22893), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 19:34:37,575 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 13723 states to 13723 states and 22893 transitions.
[2023-12-25 19:34:37,575 INFO  L78                 Accepts]: Start accepts. Automaton has 13723 states and 22893 transitions. Word has length 8926
[2023-12-25 19:34:37,579 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 19:34:37,579 INFO  L495      AbstractCegarLoop]: Abstraction has 13723 states and 22893 transitions.
[2023-12-25 19:34:37,580 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 1629.4) internal successors, (8147), 5 states have internal predecessors, (8147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 19:34:37,580 INFO  L276                IsEmpty]: Start isEmpty. Operand 13723 states and 22893 transitions.
[2023-12-25 19:34:38,083 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 8928
[2023-12-25 19:34:38,083 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 19:34:38,085 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-12-25 19:34:38,198 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0
[2023-12-25 19:34:38,312 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 19:34:38,312 INFO  L420      AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 19:34:38,313 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 19:34:38,314 INFO  L85        PathProgramCache]: Analyzing trace with hash 1699288551, now seen corresponding path program 1 times
[2023-12-25 19:34:38,315 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 19:34:38,315 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1566198452]
[2023-12-25 19:34:38,316 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 19:34:38,316 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 19:34:38,936 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 19:34:38,936 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [640850029]
[2023-12-25 19:34:38,938 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 19:34:38,938 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 19:34:38,938 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 19:34:38,939 INFO  L229       MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-25 19:34:38,940 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process
[2023-12-25 19:34:50,208 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 19:34:50,567 INFO  L262         TraceCheckSpWp]: Trace formula consists of 39699 conjuncts, 17 conjunts are in the unsatisfiable core
[2023-12-25 19:34:50,659 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 19:34:51,618 INFO  L134       CoverageAnalysis]: Checked inductivity of 792 backedges. 14 proven. 741 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked.
[2023-12-25 19:34:51,618 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-12-25 19:34:51,826 INFO  L134       CoverageAnalysis]: Checked inductivity of 792 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 778 trivial. 0 not checked.
[2023-12-25 19:34:51,827 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 19:34:51,827 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1566198452]
[2023-12-25 19:34:51,827 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 19:34:51,827 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [640850029]
[2023-12-25 19:34:51,827 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [640850029] provided 1 perfect and 1 imperfect interpolant sequences
[2023-12-25 19:34:51,827 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2023-12-25 19:34:51,829 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10
[2023-12-25 19:34:51,829 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1906551997]
[2023-12-25 19:34:51,829 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 19:34:51,834 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-12-25 19:34:51,834 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 19:34:51,838 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-12-25 19:34:51,839 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90
[2023-12-25 19:34:51,840 INFO  L87              Difference]: Start difference. First operand 13723 states and 22893 transitions. Second operand  has 5 states, 5 states have (on average 1630.0) internal successors, (8150), 5 states have internal predecessors, (8150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 19:35:04,749 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 19:35:04,749 INFO  L93              Difference]: Finished difference Result 49519 states and 82303 transitions.
[2023-12-25 19:35:04,755 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2023-12-25 19:35:04,757 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 1630.0) internal successors, (8150), 5 states have internal predecessors, (8150), 0 states have call successors, (0), 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 8927
[2023-12-25 19:35:04,762 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 19:35:04,779 INFO  L225             Difference]: With dead ends: 49519
[2023-12-25 19:35:04,779 INFO  L226             Difference]: Without dead ends: 25962
[2023-12-25 19:35:04,789 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 17853 GetRequests, 17844 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110
[2023-12-25 19:35:04,789 INFO  L413           NwaCegarLoop]: 35577 mSDtfsCounter, 37925 mSDsluCounter, 51975 mSDsCounter, 0 mSdLazyCounter, 19416 mSolverCounterSat, 958 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37925 SdHoareTripleChecker+Valid, 87552 SdHoareTripleChecker+Invalid, 20374 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 958 IncrementalHoareTripleChecker+Valid, 19416 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.3s IncrementalHoareTripleChecker+Time
[2023-12-25 19:35:04,789 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [37925 Valid, 87552 Invalid, 20374 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [958 Valid, 19416 Invalid, 0 Unknown, 0 Unchecked, 12.3s Time]
[2023-12-25 19:35:04,806 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 25962 states.
[2023-12-25 19:35:04,909 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 25962 to 13725.
[2023-12-25 19:35:04,920 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 13725 states, 13724 states have (on average 1.668245409501603) internal successors, (22895), 13724 states have internal predecessors, (22895), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 19:35:04,933 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 13725 states to 13725 states and 22895 transitions.
[2023-12-25 19:35:04,933 INFO  L78                 Accepts]: Start accepts. Automaton has 13725 states and 22895 transitions. Word has length 8927
[2023-12-25 19:35:04,937 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 19:35:04,937 INFO  L495      AbstractCegarLoop]: Abstraction has 13725 states and 22895 transitions.
[2023-12-25 19:35:04,938 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 1630.0) internal successors, (8150), 5 states have internal predecessors, (8150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 19:35:04,938 INFO  L276                IsEmpty]: Start isEmpty. Operand 13725 states and 22895 transitions.
[2023-12-25 19:35:05,461 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 8929
[2023-12-25 19:35:05,461 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 19:35:05,463 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-12-25 19:35:05,582 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0
[2023-12-25 19:35:05,664 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 19:35:05,664 INFO  L420      AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 19:35:05,665 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 19:35:05,666 INFO  L85        PathProgramCache]: Analyzing trace with hash -669693735, now seen corresponding path program 1 times
[2023-12-25 19:35:05,666 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 19:35:05,666 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1460296439]
[2023-12-25 19:35:05,667 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 19:35:05,667 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 19:35:06,199 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 19:35:06,199 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [420615971]
[2023-12-25 19:35:06,201 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 19:35:06,201 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 19:35:06,201 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 19:35:06,202 INFO  L229       MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-25 19:35:06,203 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process
[2023-12-25 19:35:16,115 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 19:35:16,384 INFO  L262         TraceCheckSpWp]: Trace formula consists of 39702 conjuncts, 17 conjunts are in the unsatisfiable core
[2023-12-25 19:35:16,475 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 19:35:17,505 INFO  L134       CoverageAnalysis]: Checked inductivity of 792 backedges. 16 proven. 741 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked.
[2023-12-25 19:35:17,506 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-12-25 19:35:17,623 INFO  L134       CoverageAnalysis]: Checked inductivity of 792 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 776 trivial. 0 not checked.
[2023-12-25 19:35:17,623 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 19:35:17,623 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1460296439]
[2023-12-25 19:35:17,623 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 19:35:17,623 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [420615971]
[2023-12-25 19:35:17,623 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [420615971] provided 1 perfect and 1 imperfect interpolant sequences
[2023-12-25 19:35:17,623 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2023-12-25 19:35:17,625 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10
[2023-12-25 19:35:17,625 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [297807780]
[2023-12-25 19:35:17,625 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 19:35:17,629 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-12-25 19:35:17,629 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 19:35:17,633 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-12-25 19:35:17,633 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90
[2023-12-25 19:35:17,634 INFO  L87              Difference]: Start difference. First operand 13725 states and 22895 transitions. Second operand  has 5 states, 5 states have (on average 1630.6) internal successors, (8153), 5 states have internal predecessors, (8153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 19:35:30,420 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 19:35:30,420 INFO  L93              Difference]: Finished difference Result 49527 states and 82311 transitions.
[2023-12-25 19:35:30,420 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2023-12-25 19:35:30,422 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 1630.6) internal successors, (8153), 5 states have internal predecessors, (8153), 0 states have call successors, (0), 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 8928
[2023-12-25 19:35:30,427 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 19:35:30,450 INFO  L225             Difference]: With dead ends: 49527
[2023-12-25 19:35:30,450 INFO  L226             Difference]: Without dead ends: 25963
[2023-12-25 19:35:30,464 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 17855 GetRequests, 17846 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110
[2023-12-25 19:35:30,464 INFO  L413           NwaCegarLoop]: 35569 mSDtfsCounter, 37919 mSDsluCounter, 51965 mSDsCounter, 0 mSdLazyCounter, 19416 mSolverCounterSat, 958 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37919 SdHoareTripleChecker+Valid, 87534 SdHoareTripleChecker+Invalid, 20374 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 958 IncrementalHoareTripleChecker+Valid, 19416 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.2s IncrementalHoareTripleChecker+Time
[2023-12-25 19:35:30,465 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [37919 Valid, 87534 Invalid, 20374 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [958 Valid, 19416 Invalid, 0 Unknown, 0 Unchecked, 12.2s Time]
[2023-12-25 19:35:30,484 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 25963 states.
[2023-12-25 19:35:30,692 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 25963 to 13727.
[2023-12-25 19:35:30,706 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 13727 states, 13726 states have (on average 1.6681480402156492) internal successors, (22897), 13726 states have internal predecessors, (22897), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 19:35:30,720 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 13727 states to 13727 states and 22897 transitions.
[2023-12-25 19:35:30,720 INFO  L78                 Accepts]: Start accepts. Automaton has 13727 states and 22897 transitions. Word has length 8928
[2023-12-25 19:35:30,724 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 19:35:30,724 INFO  L495      AbstractCegarLoop]: Abstraction has 13727 states and 22897 transitions.
[2023-12-25 19:35:30,725 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 1630.6) internal successors, (8153), 5 states have internal predecessors, (8153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 19:35:30,725 INFO  L276                IsEmpty]: Start isEmpty. Operand 13727 states and 22897 transitions.
[2023-12-25 19:35:31,193 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 8930
[2023-12-25 19:35:31,193 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 19:35:31,195 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-12-25 19:35:31,311 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0
[2023-12-25 19:35:31,398 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 19:35:31,398 INFO  L420      AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 19:35:31,398 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 19:35:31,399 INFO  L85        PathProgramCache]: Analyzing trace with hash 1388387777, now seen corresponding path program 1 times
[2023-12-25 19:35:31,399 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 19:35:31,399 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2131782770]
[2023-12-25 19:35:31,400 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 19:35:31,400 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 19:35:32,038 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 19:35:32,038 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2122707281]
[2023-12-25 19:35:32,040 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 19:35:32,040 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 19:35:32,040 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 19:35:32,041 INFO  L229       MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-25 19:35:32,043 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process
[2023-12-25 19:35:41,863 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 19:35:42,123 INFO  L262         TraceCheckSpWp]: Trace formula consists of 39705 conjuncts, 17 conjunts are in the unsatisfiable core
[2023-12-25 19:35:42,214 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 19:35:43,362 INFO  L134       CoverageAnalysis]: Checked inductivity of 792 backedges. 18 proven. 741 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked.
[2023-12-25 19:35:43,362 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-12-25 19:35:43,482 INFO  L134       CoverageAnalysis]: Checked inductivity of 792 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 774 trivial. 0 not checked.
[2023-12-25 19:35:43,482 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 19:35:43,482 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2131782770]
[2023-12-25 19:35:43,482 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 19:35:43,482 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2122707281]
[2023-12-25 19:35:43,482 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [2122707281] provided 1 perfect and 1 imperfect interpolant sequences
[2023-12-25 19:35:43,482 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2023-12-25 19:35:43,484 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10
[2023-12-25 19:35:43,484 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1570275899]
[2023-12-25 19:35:43,484 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 19:35:43,487 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-12-25 19:35:43,488 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 19:35:43,490 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-12-25 19:35:43,491 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90
[2023-12-25 19:35:43,491 INFO  L87              Difference]: Start difference. First operand 13727 states and 22897 transitions. Second operand  has 5 states, 5 states have (on average 1631.2) internal successors, (8156), 5 states have internal predecessors, (8156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 19:35:56,319 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 19:35:56,319 INFO  L93              Difference]: Finished difference Result 49535 states and 82319 transitions.
[2023-12-25 19:35:56,319 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2023-12-25 19:35:56,321 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 1631.2) internal successors, (8156), 5 states have internal predecessors, (8156), 0 states have call successors, (0), 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 8929
[2023-12-25 19:35:56,327 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 19:35:56,350 INFO  L225             Difference]: With dead ends: 49535
[2023-12-25 19:35:56,351 INFO  L226             Difference]: Without dead ends: 25964
[2023-12-25 19:35:56,364 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 17857 GetRequests, 17848 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110
[2023-12-25 19:35:56,365 INFO  L413           NwaCegarLoop]: 35561 mSDtfsCounter, 37913 mSDsluCounter, 51955 mSDsCounter, 0 mSdLazyCounter, 19416 mSolverCounterSat, 958 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37913 SdHoareTripleChecker+Valid, 87516 SdHoareTripleChecker+Invalid, 20374 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 958 IncrementalHoareTripleChecker+Valid, 19416 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.1s IncrementalHoareTripleChecker+Time
[2023-12-25 19:35:56,365 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [37913 Valid, 87516 Invalid, 20374 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [958 Valid, 19416 Invalid, 0 Unknown, 0 Unchecked, 12.1s Time]
[2023-12-25 19:35:56,388 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 25964 states.
[2023-12-25 19:35:56,525 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 25964 to 13729.
[2023-12-25 19:35:56,538 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 13729 states, 13728 states have (on average 1.6680506993006994) internal successors, (22899), 13728 states have internal predecessors, (22899), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 19:35:56,553 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 13729 states to 13729 states and 22899 transitions.
[2023-12-25 19:35:56,553 INFO  L78                 Accepts]: Start accepts. Automaton has 13729 states and 22899 transitions. Word has length 8929
[2023-12-25 19:35:56,557 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 19:35:56,557 INFO  L495      AbstractCegarLoop]: Abstraction has 13729 states and 22899 transitions.
[2023-12-25 19:35:56,558 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 1631.2) internal successors, (8156), 5 states have internal predecessors, (8156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 19:35:56,558 INFO  L276                IsEmpty]: Start isEmpty. Operand 13729 states and 22899 transitions.
[2023-12-25 19:35:57,150 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 8931
[2023-12-25 19:35:57,150 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 19:35:57,152 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-12-25 19:35:57,268 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0
[2023-12-25 19:35:57,352 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23
[2023-12-25 19:35:57,353 INFO  L420      AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 19:35:57,354 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 19:35:57,355 INFO  L85        PathProgramCache]: Analyzing trace with hash -1793614337, now seen corresponding path program 1 times
[2023-12-25 19:35:57,355 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 19:35:57,355 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1242759949]
[2023-12-25 19:35:57,356 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 19:35:57,356 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 19:35:57,920 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 19:35:57,920 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1821692759]
[2023-12-25 19:35:57,922 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 19:35:57,922 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 19:35:57,922 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 19:35:57,923 INFO  L229       MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-25 19:35:57,924 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process
[2023-12-25 19:36:07,971 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 19:36:08,243 INFO  L262         TraceCheckSpWp]: Trace formula consists of 39708 conjuncts, 17 conjunts are in the unsatisfiable core
[2023-12-25 19:36:08,335 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 19:36:09,221 INFO  L134       CoverageAnalysis]: Checked inductivity of 792 backedges. 20 proven. 741 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked.
[2023-12-25 19:36:09,222 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-12-25 19:36:09,452 INFO  L134       CoverageAnalysis]: Checked inductivity of 792 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 772 trivial. 0 not checked.
[2023-12-25 19:36:09,452 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 19:36:09,452 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1242759949]
[2023-12-25 19:36:09,452 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 19:36:09,452 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1821692759]
[2023-12-25 19:36:09,452 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1821692759] provided 1 perfect and 1 imperfect interpolant sequences
[2023-12-25 19:36:09,452 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2023-12-25 19:36:09,454 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10
[2023-12-25 19:36:09,454 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [902713897]
[2023-12-25 19:36:09,454 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 19:36:09,458 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-12-25 19:36:09,458 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 19:36:09,461 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-12-25 19:36:09,461 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90
[2023-12-25 19:36:09,462 INFO  L87              Difference]: Start difference. First operand 13729 states and 22899 transitions. Second operand  has 5 states, 5 states have (on average 1631.8) internal successors, (8159), 5 states have internal predecessors, (8159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 19:36:21,908 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 19:36:21,909 INFO  L93              Difference]: Finished difference Result 49543 states and 82327 transitions.
[2023-12-25 19:36:21,909 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2023-12-25 19:36:21,911 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 1631.8) internal successors, (8159), 5 states have internal predecessors, (8159), 0 states have call successors, (0), 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 8930
[2023-12-25 19:36:21,916 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 19:36:21,942 INFO  L225             Difference]: With dead ends: 49543
[2023-12-25 19:36:21,942 INFO  L226             Difference]: Without dead ends: 25965
[2023-12-25 19:36:21,957 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 17859 GetRequests, 17850 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110
[2023-12-25 19:36:21,958 INFO  L413           NwaCegarLoop]: 35553 mSDtfsCounter, 37915 mSDsluCounter, 50909 mSDsCounter, 0 mSdLazyCounter, 18012 mSolverCounterSat, 958 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37915 SdHoareTripleChecker+Valid, 86462 SdHoareTripleChecker+Invalid, 18970 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 958 IncrementalHoareTripleChecker+Valid, 18012 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.8s IncrementalHoareTripleChecker+Time
[2023-12-25 19:36:21,958 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [37915 Valid, 86462 Invalid, 18970 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [958 Valid, 18012 Invalid, 0 Unknown, 0 Unchecked, 11.8s Time]
[2023-12-25 19:36:21,987 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 25965 states.
[2023-12-25 19:36:22,121 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 25965 to 13731.
[2023-12-25 19:36:22,134 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 13731 states, 13730 states have (on average 1.6679533867443554) internal successors, (22901), 13730 states have internal predecessors, (22901), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 19:36:22,272 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 13731 states to 13731 states and 22901 transitions.
[2023-12-25 19:36:22,272 INFO  L78                 Accepts]: Start accepts. Automaton has 13731 states and 22901 transitions. Word has length 8930
[2023-12-25 19:36:22,276 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 19:36:22,276 INFO  L495      AbstractCegarLoop]: Abstraction has 13731 states and 22901 transitions.
[2023-12-25 19:36:22,277 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 1631.8) internal successors, (8159), 5 states have internal predecessors, (8159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 19:36:22,277 INFO  L276                IsEmpty]: Start isEmpty. Operand 13731 states and 22901 transitions.
[2023-12-25 19:36:22,772 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 8932
[2023-12-25 19:36:22,772 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 19:36:22,774 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-12-25 19:36:22,904 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0
[2023-12-25 19:36:22,977 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24
[2023-12-25 19:36:22,978 INFO  L420      AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 19:36:22,979 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 19:36:22,980 INFO  L85        PathProgramCache]: Analyzing trace with hash -1305394147, now seen corresponding path program 1 times
[2023-12-25 19:36:22,980 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 19:36:22,980 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [401867584]
[2023-12-25 19:36:22,981 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 19:36:22,981 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 19:36:23,537 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 19:36:23,537 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [497485116]
[2023-12-25 19:36:23,539 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 19:36:23,539 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 19:36:23,539 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 19:36:23,540 INFO  L229       MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-25 19:36:23,542 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process
[2023-12-25 19:36:33,479 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 19:36:33,752 INFO  L262         TraceCheckSpWp]: Trace formula consists of 39712 conjuncts, 17 conjunts are in the unsatisfiable core
[2023-12-25 19:36:33,845 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 19:36:34,725 INFO  L134       CoverageAnalysis]: Checked inductivity of 792 backedges. 22 proven. 741 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked.
[2023-12-25 19:36:34,725 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-12-25 19:36:34,954 INFO  L134       CoverageAnalysis]: Checked inductivity of 792 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 770 trivial. 0 not checked.
[2023-12-25 19:36:34,955 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 19:36:34,955 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [401867584]
[2023-12-25 19:36:34,955 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 19:36:34,955 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [497485116]
[2023-12-25 19:36:34,955 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [497485116] provided 1 perfect and 1 imperfect interpolant sequences
[2023-12-25 19:36:34,955 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2023-12-25 19:36:34,956 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10
[2023-12-25 19:36:34,956 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2012372096]
[2023-12-25 19:36:34,957 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 19:36:34,961 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-12-25 19:36:34,961 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 19:36:34,964 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-12-25 19:36:34,964 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90
[2023-12-25 19:36:34,965 INFO  L87              Difference]: Start difference. First operand 13731 states and 22901 transitions. Second operand  has 5 states, 5 states have (on average 1632.4) internal successors, (8162), 5 states have internal predecessors, (8162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 19:36:47,945 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 19:36:47,945 INFO  L93              Difference]: Finished difference Result 49551 states and 82335 transitions.
[2023-12-25 19:36:47,945 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2023-12-25 19:36:47,947 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 1632.4) internal successors, (8162), 5 states have internal predecessors, (8162), 0 states have call successors, (0), 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 8931
[2023-12-25 19:36:47,952 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 19:36:47,975 INFO  L225             Difference]: With dead ends: 49551
[2023-12-25 19:36:47,975 INFO  L226             Difference]: Without dead ends: 25966
[2023-12-25 19:36:47,990 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 17861 GetRequests, 17852 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110
[2023-12-25 19:36:47,991 INFO  L413           NwaCegarLoop]: 35545 mSDtfsCounter, 37901 mSDsluCounter, 51935 mSDsCounter, 0 mSdLazyCounter, 19416 mSolverCounterSat, 958 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37901 SdHoareTripleChecker+Valid, 87480 SdHoareTripleChecker+Invalid, 20374 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 958 IncrementalHoareTripleChecker+Valid, 19416 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.3s IncrementalHoareTripleChecker+Time
[2023-12-25 19:36:47,991 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [37901 Valid, 87480 Invalid, 20374 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [958 Valid, 19416 Invalid, 0 Unknown, 0 Unchecked, 12.3s Time]
[2023-12-25 19:36:48,011 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 25966 states.
[2023-12-25 19:36:48,137 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 25966 to 13733.
[2023-12-25 19:36:48,150 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 13733 states, 13732 states have (on average 1.6678561025342267) internal successors, (22903), 13732 states have internal predecessors, (22903), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 19:36:48,295 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 13733 states to 13733 states and 22903 transitions.
[2023-12-25 19:36:48,295 INFO  L78                 Accepts]: Start accepts. Automaton has 13733 states and 22903 transitions. Word has length 8931
[2023-12-25 19:36:48,299 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 19:36:48,299 INFO  L495      AbstractCegarLoop]: Abstraction has 13733 states and 22903 transitions.
[2023-12-25 19:36:48,300 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 1632.4) internal successors, (8162), 5 states have internal predecessors, (8162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 19:36:48,300 INFO  L276                IsEmpty]: Start isEmpty. Operand 13733 states and 22903 transitions.
[2023-12-25 19:36:48,788 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 8933
[2023-12-25 19:36:48,789 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 19:36:48,791 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-12-25 19:36:48,899 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0
[2023-12-25 19:36:48,991 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25
[2023-12-25 19:36:48,991 INFO  L420      AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 19:36:48,992 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 19:36:48,993 INFO  L85        PathProgramCache]: Analyzing trace with hash -487168601, now seen corresponding path program 1 times
[2023-12-25 19:36:48,993 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 19:36:48,993 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1406404321]
[2023-12-25 19:36:48,994 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 19:36:48,994 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 19:36:49,528 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 19:36:49,529 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1676311719]
[2023-12-25 19:36:49,530 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 19:36:49,530 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 19:36:49,530 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 19:36:49,531 INFO  L229       MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-25 19:36:49,532 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process
[2023-12-25 19:36:59,499 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 19:36:59,779 INFO  L262         TraceCheckSpWp]: Trace formula consists of 39715 conjuncts, 17 conjunts are in the unsatisfiable core
[2023-12-25 19:36:59,873 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 19:37:00,758 INFO  L134       CoverageAnalysis]: Checked inductivity of 792 backedges. 24 proven. 741 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked.
[2023-12-25 19:37:00,758 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-12-25 19:37:00,886 INFO  L134       CoverageAnalysis]: Checked inductivity of 792 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 768 trivial. 0 not checked.
[2023-12-25 19:37:00,886 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 19:37:00,886 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1406404321]
[2023-12-25 19:37:00,886 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 19:37:00,886 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1676311719]
[2023-12-25 19:37:00,886 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1676311719] provided 1 perfect and 1 imperfect interpolant sequences
[2023-12-25 19:37:00,886 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2023-12-25 19:37:00,888 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10
[2023-12-25 19:37:00,888 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [482279710]
[2023-12-25 19:37:00,888 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 19:37:00,892 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-12-25 19:37:00,892 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 19:37:00,895 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-12-25 19:37:00,895 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90
[2023-12-25 19:37:00,896 INFO  L87              Difference]: Start difference. First operand 13733 states and 22903 transitions. Second operand  has 5 states, 5 states have (on average 1633.0) internal successors, (8165), 5 states have internal predecessors, (8165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 19:37:12,121 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 19:37:12,121 INFO  L93              Difference]: Finished difference Result 49559 states and 82343 transitions.
[2023-12-25 19:37:12,121 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2023-12-25 19:37:12,123 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 1633.0) internal successors, (8165), 5 states have internal predecessors, (8165), 0 states have call successors, (0), 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 8932
[2023-12-25 19:37:12,129 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 19:37:12,149 INFO  L225             Difference]: With dead ends: 49559
[2023-12-25 19:37:12,150 INFO  L226             Difference]: Without dead ends: 25967
[2023-12-25 19:37:12,161 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 17863 GetRequests, 17854 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110
[2023-12-25 19:37:12,161 INFO  L413           NwaCegarLoop]: 35537 mSDtfsCounter, 55415 mSDsluCounter, 34344 mSDsCounter, 0 mSdLazyCounter, 14176 mSolverCounterSat, 958 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55415 SdHoareTripleChecker+Valid, 69881 SdHoareTripleChecker+Invalid, 15134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 958 IncrementalHoareTripleChecker+Valid, 14176 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.6s IncrementalHoareTripleChecker+Time
[2023-12-25 19:37:12,161 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [55415 Valid, 69881 Invalid, 15134 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [958 Valid, 14176 Invalid, 0 Unknown, 0 Unchecked, 10.6s Time]
[2023-12-25 19:37:12,180 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 25967 states.
[2023-12-25 19:37:12,297 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 25967 to 13735.
[2023-12-25 19:37:12,309 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 13735 states, 13734 states have (on average 1.6677588466579292) internal successors, (22905), 13734 states have internal predecessors, (22905), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 19:37:12,323 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 13735 states to 13735 states and 22905 transitions.
[2023-12-25 19:37:12,323 INFO  L78                 Accepts]: Start accepts. Automaton has 13735 states and 22905 transitions. Word has length 8932
[2023-12-25 19:37:12,327 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 19:37:12,327 INFO  L495      AbstractCegarLoop]: Abstraction has 13735 states and 22905 transitions.
[2023-12-25 19:37:12,328 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 1633.0) internal successors, (8165), 5 states have internal predecessors, (8165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 19:37:12,328 INFO  L276                IsEmpty]: Start isEmpty. Operand 13735 states and 22905 transitions.
[2023-12-25 19:37:12,821 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 8934
[2023-12-25 19:37:12,821 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 19:37:12,823 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-12-25 19:37:12,934 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0
[2023-12-25 19:37:13,023 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 19:37:13,024 INFO  L420      AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 19:37:13,024 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 19:37:13,025 INFO  L85        PathProgramCache]: Analyzing trace with hash -144472073, now seen corresponding path program 1 times
[2023-12-25 19:37:13,025 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 19:37:13,025 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [341456134]
[2023-12-25 19:37:13,026 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 19:37:13,026 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 19:37:13,636 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 19:37:13,636 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1195336788]
[2023-12-25 19:37:13,638 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 19:37:13,638 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 19:37:13,638 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 19:37:13,639 INFO  L229       MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-25 19:37:13,639 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process
[2023-12-25 19:37:23,582 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 19:37:23,829 INFO  L262         TraceCheckSpWp]: Trace formula consists of 39718 conjuncts, 17 conjunts are in the unsatisfiable core
[2023-12-25 19:37:23,917 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 19:37:24,897 INFO  L134       CoverageAnalysis]: Checked inductivity of 792 backedges. 26 proven. 741 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked.
[2023-12-25 19:37:24,898 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-12-25 19:37:25,031 INFO  L134       CoverageAnalysis]: Checked inductivity of 792 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 766 trivial. 0 not checked.
[2023-12-25 19:37:25,032 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 19:37:25,032 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [341456134]
[2023-12-25 19:37:25,032 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 19:37:25,032 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1195336788]
[2023-12-25 19:37:25,032 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1195336788] provided 1 perfect and 1 imperfect interpolant sequences
[2023-12-25 19:37:25,032 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2023-12-25 19:37:25,034 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10
[2023-12-25 19:37:25,034 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1938825805]
[2023-12-25 19:37:25,034 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 19:37:25,039 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-12-25 19:37:25,039 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 19:37:25,042 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-12-25 19:37:25,042 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90
[2023-12-25 19:37:25,043 INFO  L87              Difference]: Start difference. First operand 13735 states and 22905 transitions. Second operand  has 5 states, 5 states have (on average 1633.6) internal successors, (8168), 5 states have internal predecessors, (8168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 19:37:37,492 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 19:37:37,492 INFO  L93              Difference]: Finished difference Result 49567 states and 82351 transitions.
[2023-12-25 19:37:37,492 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2023-12-25 19:37:37,494 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 1633.6) internal successors, (8168), 5 states have internal predecessors, (8168), 0 states have call successors, (0), 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 8933
[2023-12-25 19:37:37,499 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 19:37:37,519 INFO  L225             Difference]: With dead ends: 49567
[2023-12-25 19:37:37,519 INFO  L226             Difference]: Without dead ends: 25968
[2023-12-25 19:37:37,529 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 17865 GetRequests, 17856 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110
[2023-12-25 19:37:37,530 INFO  L413           NwaCegarLoop]: 35529 mSDtfsCounter, 37900 mSDsluCounter, 50885 mSDsCounter, 0 mSdLazyCounter, 18012 mSolverCounterSat, 958 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37900 SdHoareTripleChecker+Valid, 86414 SdHoareTripleChecker+Invalid, 18970 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 958 IncrementalHoareTripleChecker+Valid, 18012 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.8s IncrementalHoareTripleChecker+Time
[2023-12-25 19:37:37,530 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [37900 Valid, 86414 Invalid, 18970 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [958 Valid, 18012 Invalid, 0 Unknown, 0 Unchecked, 11.8s Time]
[2023-12-25 19:37:37,549 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 25968 states.
[2023-12-25 19:37:37,660 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 25968 to 13737.
[2023-12-25 19:37:37,672 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 13737 states, 13736 states have (on average 1.6676616191030869) internal successors, (22907), 13736 states have internal predecessors, (22907), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 19:37:37,686 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 13737 states to 13737 states and 22907 transitions.
[2023-12-25 19:37:37,686 INFO  L78                 Accepts]: Start accepts. Automaton has 13737 states and 22907 transitions. Word has length 8933
[2023-12-25 19:37:37,690 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 19:37:37,690 INFO  L495      AbstractCegarLoop]: Abstraction has 13737 states and 22907 transitions.
[2023-12-25 19:37:37,691 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 1633.6) internal successors, (8168), 5 states have internal predecessors, (8168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 19:37:37,691 INFO  L276                IsEmpty]: Start isEmpty. Operand 13737 states and 22907 transitions.
[2023-12-25 19:37:38,231 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 8935
[2023-12-25 19:37:38,232 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 19:37:38,233 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-12-25 19:37:38,341 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0
[2023-12-25 19:37:38,434 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27
[2023-12-25 19:37:38,434 INFO  L420      AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 19:37:38,435 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 19:37:38,436 INFO  L85        PathProgramCache]: Analyzing trace with hash 1505844941, now seen corresponding path program 1 times
[2023-12-25 19:37:38,436 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 19:37:38,436 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1605125495]
[2023-12-25 19:37:38,436 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 19:37:38,437 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 19:37:38,989 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 19:37:38,989 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [496261397]
[2023-12-25 19:37:38,991 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 19:37:38,991 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 19:37:38,991 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 19:37:38,992 INFO  L229       MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-25 19:37:38,993 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process
[2023-12-25 19:37:48,777 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 19:37:49,055 INFO  L262         TraceCheckSpWp]: Trace formula consists of 39721 conjuncts, 17 conjunts are in the unsatisfiable core
[2023-12-25 19:37:49,152 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 19:37:50,178 INFO  L134       CoverageAnalysis]: Checked inductivity of 792 backedges. 28 proven. 741 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked.
[2023-12-25 19:37:50,179 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-12-25 19:37:50,311 INFO  L134       CoverageAnalysis]: Checked inductivity of 792 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 764 trivial. 0 not checked.
[2023-12-25 19:37:50,311 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 19:37:50,311 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1605125495]
[2023-12-25 19:37:50,311 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 19:37:50,311 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [496261397]
[2023-12-25 19:37:50,311 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [496261397] provided 1 perfect and 1 imperfect interpolant sequences
[2023-12-25 19:37:50,312 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2023-12-25 19:37:50,313 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10
[2023-12-25 19:37:50,313 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [411140865]
[2023-12-25 19:37:50,313 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 19:37:50,317 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-12-25 19:37:50,317 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 19:37:50,322 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-12-25 19:37:50,322 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90
[2023-12-25 19:37:50,323 INFO  L87              Difference]: Start difference. First operand 13737 states and 22907 transitions. Second operand  has 5 states, 5 states have (on average 1634.2) internal successors, (8171), 5 states have internal predecessors, (8171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 19:38:03,208 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 19:38:03,209 INFO  L93              Difference]: Finished difference Result 49575 states and 82359 transitions.
[2023-12-25 19:38:03,209 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2023-12-25 19:38:03,211 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 1634.2) internal successors, (8171), 5 states have internal predecessors, (8171), 0 states have call successors, (0), 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 8934
[2023-12-25 19:38:03,216 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 19:38:03,240 INFO  L225             Difference]: With dead ends: 49575
[2023-12-25 19:38:03,240 INFO  L226             Difference]: Without dead ends: 25969
[2023-12-25 19:38:03,255 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 17867 GetRequests, 17858 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110
[2023-12-25 19:38:03,255 INFO  L413           NwaCegarLoop]: 35521 mSDtfsCounter, 37883 mSDsluCounter, 51905 mSDsCounter, 0 mSdLazyCounter, 19416 mSolverCounterSat, 958 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37883 SdHoareTripleChecker+Valid, 87426 SdHoareTripleChecker+Invalid, 20374 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 958 IncrementalHoareTripleChecker+Valid, 19416 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.1s IncrementalHoareTripleChecker+Time
[2023-12-25 19:38:03,256 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [37883 Valid, 87426 Invalid, 20374 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [958 Valid, 19416 Invalid, 0 Unknown, 0 Unchecked, 12.1s Time]
[2023-12-25 19:38:03,280 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 25969 states.
[2023-12-25 19:38:03,502 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 25969 to 13739.
[2023-12-25 19:38:03,515 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 13739 states, 13738 states have (on average 1.66756441985733) internal successors, (22909), 13738 states have internal predecessors, (22909), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 19:38:03,530 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 13739 states to 13739 states and 22909 transitions.
[2023-12-25 19:38:03,530 INFO  L78                 Accepts]: Start accepts. Automaton has 13739 states and 22909 transitions. Word has length 8934
[2023-12-25 19:38:03,534 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 19:38:03,534 INFO  L495      AbstractCegarLoop]: Abstraction has 13739 states and 22909 transitions.
[2023-12-25 19:38:03,535 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 1634.2) internal successors, (8171), 5 states have internal predecessors, (8171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 19:38:03,535 INFO  L276                IsEmpty]: Start isEmpty. Operand 13739 states and 22909 transitions.
[2023-12-25 19:38:04,011 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 8936
[2023-12-25 19:38:04,011 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 19:38:04,013 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-12-25 19:38:04,115 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0
[2023-12-25 19:38:04,213 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28
[2023-12-25 19:38:04,214 INFO  L420      AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 19:38:04,214 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 19:38:04,215 INFO  L85        PathProgramCache]: Analyzing trace with hash 442070867, now seen corresponding path program 1 times
[2023-12-25 19:38:04,215 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 19:38:04,215 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1793492629]
[2023-12-25 19:38:04,216 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 19:38:04,216 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 19:38:04,865 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 19:38:04,865 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1137484086]
[2023-12-25 19:38:04,867 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 19:38:04,867 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 19:38:04,867 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 19:38:04,868 INFO  L229       MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-25 19:38:04,869 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process
[2023-12-25 19:38:14,555 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 19:38:14,808 INFO  L262         TraceCheckSpWp]: Trace formula consists of 39725 conjuncts, 17 conjunts are in the unsatisfiable core
[2023-12-25 19:38:14,894 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 19:38:15,894 INFO  L134       CoverageAnalysis]: Checked inductivity of 792 backedges. 30 proven. 741 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked.
[2023-12-25 19:38:15,894 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-12-25 19:38:16,042 INFO  L134       CoverageAnalysis]: Checked inductivity of 792 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 762 trivial. 0 not checked.
[2023-12-25 19:38:16,043 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 19:38:16,043 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1793492629]
[2023-12-25 19:38:16,043 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 19:38:16,043 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1137484086]
[2023-12-25 19:38:16,043 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1137484086] provided 1 perfect and 1 imperfect interpolant sequences
[2023-12-25 19:38:16,043 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2023-12-25 19:38:16,044 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10
[2023-12-25 19:38:16,045 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1692920502]
[2023-12-25 19:38:16,045 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 19:38:16,049 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-12-25 19:38:16,049 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 19:38:16,052 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-12-25 19:38:16,052 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90
[2023-12-25 19:38:16,053 INFO  L87              Difference]: Start difference. First operand 13739 states and 22909 transitions. Second operand  has 5 states, 5 states have (on average 1634.8) internal successors, (8174), 5 states have internal predecessors, (8174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 19:38:27,185 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 19:38:27,186 INFO  L93              Difference]: Finished difference Result 49583 states and 82367 transitions.
[2023-12-25 19:38:27,186 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2023-12-25 19:38:27,188 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 1634.8) internal successors, (8174), 5 states have internal predecessors, (8174), 0 states have call successors, (0), 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 8935
[2023-12-25 19:38:27,193 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 19:38:27,214 INFO  L225             Difference]: With dead ends: 49583
[2023-12-25 19:38:27,214 INFO  L226             Difference]: Without dead ends: 25970
[2023-12-25 19:38:27,224 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 17869 GetRequests, 17860 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110
[2023-12-25 19:38:27,225 INFO  L413           NwaCegarLoop]: 35513 mSDtfsCounter, 55378 mSDsluCounter, 34330 mSDsCounter, 0 mSdLazyCounter, 14176 mSolverCounterSat, 958 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55378 SdHoareTripleChecker+Valid, 69843 SdHoareTripleChecker+Invalid, 15134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 958 IncrementalHoareTripleChecker+Valid, 14176 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.6s IncrementalHoareTripleChecker+Time
[2023-12-25 19:38:27,225 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [55378 Valid, 69843 Invalid, 15134 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [958 Valid, 14176 Invalid, 0 Unknown, 0 Unchecked, 10.6s Time]
[2023-12-25 19:38:27,246 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 25970 states.
[2023-12-25 19:38:27,368 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 25970 to 13741.
[2023-12-25 19:38:27,381 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 13741 states, 13740 states have (on average 1.667467248908297) internal successors, (22911), 13740 states have internal predecessors, (22911), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 19:38:27,396 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 13741 states to 13741 states and 22911 transitions.
[2023-12-25 19:38:27,396 INFO  L78                 Accepts]: Start accepts. Automaton has 13741 states and 22911 transitions. Word has length 8935
[2023-12-25 19:38:27,400 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 19:38:27,401 INFO  L495      AbstractCegarLoop]: Abstraction has 13741 states and 22911 transitions.
[2023-12-25 19:38:27,402 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 1634.8) internal successors, (8174), 5 states have internal predecessors, (8174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 19:38:27,402 INFO  L276                IsEmpty]: Start isEmpty. Operand 13741 states and 22911 transitions.
[2023-12-25 19:38:27,915 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 8937
[2023-12-25 19:38:27,915 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 19:38:27,917 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-12-25 19:38:28,043 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0
[2023-12-25 19:38:28,118 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 19:38:28,118 INFO  L420      AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 19:38:28,119 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 19:38:28,119 INFO  L85        PathProgramCache]: Analyzing trace with hash 406837109, now seen corresponding path program 1 times
[2023-12-25 19:38:28,119 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 19:38:28,119 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1839774718]
[2023-12-25 19:38:28,120 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 19:38:28,120 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 19:38:28,730 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 19:38:28,730 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2101789706]
[2023-12-25 19:38:28,732 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 19:38:28,732 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 19:38:28,732 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 19:38:28,733 INFO  L229       MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-25 19:38:28,734 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process
[2023-12-25 19:38:38,645 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 19:38:38,895 INFO  L262         TraceCheckSpWp]: Trace formula consists of 39728 conjuncts, 17 conjunts are in the unsatisfiable core
[2023-12-25 19:38:38,983 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 19:38:39,921 INFO  L134       CoverageAnalysis]: Checked inductivity of 792 backedges. 32 proven. 741 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked.
[2023-12-25 19:38:39,922 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-12-25 19:38:40,119 INFO  L134       CoverageAnalysis]: Checked inductivity of 792 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked.
[2023-12-25 19:38:40,119 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 19:38:40,119 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1839774718]
[2023-12-25 19:38:40,119 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 19:38:40,119 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2101789706]
[2023-12-25 19:38:40,119 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [2101789706] provided 1 perfect and 1 imperfect interpolant sequences
[2023-12-25 19:38:40,119 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2023-12-25 19:38:40,121 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10
[2023-12-25 19:38:40,121 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1435096582]
[2023-12-25 19:38:40,121 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 19:38:40,125 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-12-25 19:38:40,125 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 19:38:40,129 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-12-25 19:38:40,129 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90
[2023-12-25 19:38:40,131 INFO  L87              Difference]: Start difference. First operand 13741 states and 22911 transitions. Second operand  has 5 states, 5 states have (on average 1635.4) internal successors, (8177), 5 states have internal predecessors, (8177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 19:38:51,324 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 19:38:51,324 INFO  L93              Difference]: Finished difference Result 49591 states and 82375 transitions.
[2023-12-25 19:38:51,325 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2023-12-25 19:38:51,326 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 1635.4) internal successors, (8177), 5 states have internal predecessors, (8177), 0 states have call successors, (0), 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 8936
[2023-12-25 19:38:51,331 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 19:38:51,349 INFO  L225             Difference]: With dead ends: 49591
[2023-12-25 19:38:51,349 INFO  L226             Difference]: Without dead ends: 25971
[2023-12-25 19:38:51,358 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 17871 GetRequests, 17862 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110
[2023-12-25 19:38:51,359 INFO  L413           NwaCegarLoop]: 35505 mSDtfsCounter, 55383 mSDsluCounter, 34324 mSDsCounter, 0 mSdLazyCounter, 14176 mSolverCounterSat, 958 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55383 SdHoareTripleChecker+Valid, 69829 SdHoareTripleChecker+Invalid, 15134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 958 IncrementalHoareTripleChecker+Valid, 14176 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.6s IncrementalHoareTripleChecker+Time
[2023-12-25 19:38:51,359 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [55383 Valid, 69829 Invalid, 15134 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [958 Valid, 14176 Invalid, 0 Unknown, 0 Unchecked, 10.6s Time]
[2023-12-25 19:38:51,378 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 25971 states.
[2023-12-25 19:38:51,482 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 25971 to 13743.
[2023-12-25 19:38:51,493 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 13743 states, 13742 states have (on average 1.6673701062436326) internal successors, (22913), 13742 states have internal predecessors, (22913), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 19:38:51,507 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 13743 states to 13743 states and 22913 transitions.
[2023-12-25 19:38:51,507 INFO  L78                 Accepts]: Start accepts. Automaton has 13743 states and 22913 transitions. Word has length 8936
[2023-12-25 19:38:51,512 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 19:38:51,513 INFO  L495      AbstractCegarLoop]: Abstraction has 13743 states and 22913 transitions.
[2023-12-25 19:38:51,514 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 1635.4) internal successors, (8177), 5 states have internal predecessors, (8177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 19:38:51,514 INFO  L276                IsEmpty]: Start isEmpty. Operand 13743 states and 22913 transitions.
[2023-12-25 19:38:52,061 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 8938
[2023-12-25 19:38:52,061 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 19:38:52,063 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-12-25 19:38:52,175 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Ended with exit code 0
[2023-12-25 19:38:52,264 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 19:38:52,264 INFO  L420      AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 19:38:52,264 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 19:38:52,265 INFO  L85        PathProgramCache]: Analyzing trace with hash 1341814573, now seen corresponding path program 1 times
[2023-12-25 19:38:52,265 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 19:38:52,265 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [175579968]
[2023-12-25 19:38:52,266 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 19:38:52,266 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 19:38:52,784 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 19:38:52,785 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [471918163]
[2023-12-25 19:38:52,786 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 19:38:52,786 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 19:38:52,786 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 19:38:52,787 INFO  L229       MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-25 19:38:52,789 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process
[2023-12-25 19:39:02,656 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 19:39:02,913 INFO  L262         TraceCheckSpWp]: Trace formula consists of 39731 conjuncts, 17 conjunts are in the unsatisfiable core
[2023-12-25 19:39:03,121 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 19:39:03,992 INFO  L134       CoverageAnalysis]: Checked inductivity of 792 backedges. 34 proven. 741 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked.
[2023-12-25 19:39:03,992 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-12-25 19:39:04,129 INFO  L134       CoverageAnalysis]: Checked inductivity of 792 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 758 trivial. 0 not checked.
[2023-12-25 19:39:04,129 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 19:39:04,129 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [175579968]
[2023-12-25 19:39:04,129 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 19:39:04,130 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [471918163]
[2023-12-25 19:39:04,130 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [471918163] provided 1 perfect and 1 imperfect interpolant sequences
[2023-12-25 19:39:04,130 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2023-12-25 19:39:04,131 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10
[2023-12-25 19:39:04,131 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1398908104]
[2023-12-25 19:39:04,131 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 19:39:04,135 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-12-25 19:39:04,135 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 19:39:04,138 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-12-25 19:39:04,138 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90
[2023-12-25 19:39:04,139 INFO  L87              Difference]: Start difference. First operand 13743 states and 22913 transitions. Second operand  has 5 states, 5 states have (on average 1636.0) internal successors, (8180), 5 states have internal predecessors, (8180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 19:39:15,176 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 19:39:15,176 INFO  L93              Difference]: Finished difference Result 49599 states and 82383 transitions.
[2023-12-25 19:39:15,176 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2023-12-25 19:39:15,178 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 1636.0) internal successors, (8180), 5 states have internal predecessors, (8180), 0 states have call successors, (0), 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 8937
[2023-12-25 19:39:15,183 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 19:39:15,204 INFO  L225             Difference]: With dead ends: 49599
[2023-12-25 19:39:15,204 INFO  L226             Difference]: Without dead ends: 25972
[2023-12-25 19:39:15,217 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 17873 GetRequests, 17864 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110
[2023-12-25 19:39:15,217 INFO  L413           NwaCegarLoop]: 35497 mSDtfsCounter, 55375 mSDsluCounter, 34319 mSDsCounter, 0 mSdLazyCounter, 14176 mSolverCounterSat, 958 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55375 SdHoareTripleChecker+Valid, 69816 SdHoareTripleChecker+Invalid, 15134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 958 IncrementalHoareTripleChecker+Valid, 14176 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.4s IncrementalHoareTripleChecker+Time
[2023-12-25 19:39:15,217 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [55375 Valid, 69816 Invalid, 15134 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [958 Valid, 14176 Invalid, 0 Unknown, 0 Unchecked, 10.4s Time]
[2023-12-25 19:39:15,239 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 25972 states.