/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.telephony.3.prop1-back-serstep.c


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


This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m
[2023-12-25 22:38:36,784 INFO  L188        SettingsManager]: Resetting all preferences to default values...
[2023-12-25 22:38:36,837 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 22:38:36,841 WARN  L101        SettingsManager]: Preference file contains the following unknown settings:
[2023-12-25 22:38:36,841 WARN  L103        SettingsManager]:   * de.uni_freiburg.informatik.ultimate.core.Log level for class
[2023-12-25 22:38:36,876 INFO  L130        SettingsManager]: Preferences different from defaults after loading the file:
[2023-12-25 22:38:36,879 INFO  L151        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2023-12-25 22:38:36,880 INFO  L153        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2023-12-25 22:38:36,880 INFO  L151        SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults:
[2023-12-25 22:38:36,884 INFO  L153        SettingsManager]:  * Use memory slicer=true
[2023-12-25 22:38:36,884 INFO  L151        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2023-12-25 22:38:36,885 INFO  L153        SettingsManager]:  * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2023-12-25 22:38:36,885 INFO  L151        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2023-12-25 22:38:36,886 INFO  L153        SettingsManager]:  * Create parallel compositions if possible=false
[2023-12-25 22:38:36,886 INFO  L153        SettingsManager]:  * Use SBE=true
[2023-12-25 22:38:36,887 INFO  L151        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2023-12-25 22:38:36,887 INFO  L153        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2023-12-25 22:38:36,887 INFO  L153        SettingsManager]:  * Overapproximate operations on floating types=true
[2023-12-25 22:38:36,887 INFO  L153        SettingsManager]:  * Check division by zero=IGNORE
[2023-12-25 22:38:36,888 INFO  L153        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2023-12-25 22:38:36,888 INFO  L153        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2023-12-25 22:38:36,888 INFO  L153        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2023-12-25 22:38:36,888 INFO  L153        SettingsManager]:  * Allow undefined functions=false
[2023-12-25 22:38:36,888 INFO  L153        SettingsManager]:  * Check if freed pointer was valid=false
[2023-12-25 22:38:36,889 INFO  L153        SettingsManager]:  * Use constant arrays=true
[2023-12-25 22:38:36,889 INFO  L151        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2023-12-25 22:38:36,889 INFO  L153        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2023-12-25 22:38:36,890 INFO  L153        SettingsManager]:  * Only consider context switches at boundaries of atomic blocks=true
[2023-12-25 22:38:36,890 INFO  L153        SettingsManager]:  * SMT solver=External_DefaultMode
[2023-12-25 22:38:36,890 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2023-12-25 22:38:36,891 INFO  L151        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2023-12-25 22:38:36,891 INFO  L153        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2023-12-25 22:38:36,891 INFO  L153        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopHeads
[2023-12-25 22:38:36,891 INFO  L153        SettingsManager]:  * Trace refinement strategy=CAMEL
[2023-12-25 22:38:36,892 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2023-12-25 22:38:36,892 INFO  L153        SettingsManager]:  * Apply one-shot large block encoding in concurrent analysis=false
[2023-12-25 22:38:36,892 INFO  L153        SettingsManager]:  * Automaton type used in concurrency analysis=PETRI_NET
[2023-12-25 22:38:36,892 INFO  L153        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2023-12-25 22:38:36,892 INFO  L153        SettingsManager]:  * Order on configurations for Petri net unfoldings=DBO
[2023-12-25 22:38:36,892 INFO  L153        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2023-12-25 22:38:36,893 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$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true
[2023-12-25 22:38:37,077 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2023-12-25 22:38:37,104 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2023-12-25 22:38:37,106 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2023-12-25 22:38:37,107 INFO  L270        PluginConnector]: Initializing CDTParser...
[2023-12-25 22:38:37,107 INFO  L274        PluginConnector]: CDTParser initialized
[2023-12-25 22:38:37,108 INFO  L431   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.telephony.3.prop1-back-serstep.c
[2023-12-25 22:38:38,266 INFO  L533              CDTParser]: Created temporary CDT project at NULL
[2023-12-25 22:38:38,661 INFO  L384              CDTParser]: Found 1 translation units.
[2023-12-25 22:38:38,661 INFO  L180              CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.telephony.3.prop1-back-serstep.c
[2023-12-25 22:38:38,689 INFO  L427              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/658ad28e9/8cf26b4d8d8b4c70a1bda35f8ec12a95/FLAGedcdea1d7
[2023-12-25 22:38:38,704 INFO  L435              CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/658ad28e9/8cf26b4d8d8b4c70a1bda35f8ec12a95
[2023-12-25 22:38:38,706 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2023-12-25 22:38:38,709 INFO  L133        ToolchainWalker]: Walking toolchain with 5 elements.
[2023-12-25 22:38:38,712 INFO  L112        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2023-12-25 22:38:38,712 INFO  L270        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2023-12-25 22:38:38,716 INFO  L274        PluginConnector]: CACSL2BoogieTranslator initialized
[2023-12-25 22:38:38,717 INFO  L184        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.12 10:38:38" (1/1) ...
[2023-12-25 22:38:38,718 INFO  L204        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@45cbadee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 10:38:38, skipping insertion in model container
[2023-12-25 22:38:38,718 INFO  L184        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.12 10:38:38" (1/1) ...
[2023-12-25 22:38:38,812 INFO  L177         MainTranslator]: Built tables and reachable declarations
[2023-12-25 22:38:39,054 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.telephony.3.prop1-back-serstep.c[1177,1190]
[2023-12-25 22:38:39,789 INFO  L209          PostProcessor]: Analyzing one entry point: main
[2023-12-25 22:38:39,798 INFO  L202         MainTranslator]: Completed pre-run
[2023-12-25 22:38:39,809 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.telephony.3.prop1-back-serstep.c[1177,1190]
[2023-12-25 22:38:40,228 INFO  L209          PostProcessor]: Analyzing one entry point: main
[2023-12-25 22:38:40,241 INFO  L206         MainTranslator]: Completed translation
[2023-12-25 22:38:40,241 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 10:38:40 WrapperNode
[2023-12-25 22:38:40,242 INFO  L131        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2023-12-25 22:38:40,243 INFO  L112        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2023-12-25 22:38:40,243 INFO  L270        PluginConnector]: Initializing Boogie Procedure Inliner...
[2023-12-25 22:38:40,243 INFO  L274        PluginConnector]: Boogie Procedure Inliner initialized
[2023-12-25 22:38:40,249 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 10:38:40" (1/1) ...
[2023-12-25 22:38:40,427 INFO  L184        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 10:38:40" (1/1) ...
[2023-12-25 22:38:42,312 INFO  L138                Inliner]: procedures = 17, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 23642
[2023-12-25 22:38:42,312 INFO  L131        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2023-12-25 22:38:42,313 INFO  L112        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2023-12-25 22:38:42,314 INFO  L270        PluginConnector]: Initializing Boogie Preprocessor...
[2023-12-25 22:38:42,314 INFO  L274        PluginConnector]: Boogie Preprocessor initialized
[2023-12-25 22:38:42,349 INFO  L184        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 10:38:40" (1/1) ...
[2023-12-25 22:38:42,349 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 10:38:40" (1/1) ...
[2023-12-25 22:38:43,061 INFO  L184        PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 10:38:40" (1/1) ...
[2023-12-25 22:38:43,377 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 22:38:43,377 INFO  L184        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 10:38:40" (1/1) ...
[2023-12-25 22:38:43,378 INFO  L184        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 10:38:40" (1/1) ...
[2023-12-25 22:38:43,981 INFO  L184        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 10:38:40" (1/1) ...
[2023-12-25 22:38:44,142 INFO  L184        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 10:38:40" (1/1) ...
[2023-12-25 22:38:44,241 INFO  L184        PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 10:38:40" (1/1) ...
[2023-12-25 22:38:44,318 INFO  L184        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 10:38:40" (1/1) ...
[2023-12-25 22:38:44,628 INFO  L131        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2023-12-25 22:38:44,630 INFO  L112        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2023-12-25 22:38:44,630 INFO  L270        PluginConnector]: Initializing RCFGBuilder...
[2023-12-25 22:38:44,631 INFO  L274        PluginConnector]: RCFGBuilder initialized
[2023-12-25 22:38:44,631 INFO  L184        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 10:38:40" (1/1) ...
[2023-12-25 22:38:44,635 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2023-12-25 22:38:44,644 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 22:38:44,657 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 22:38:44,684 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 22:38:44,691 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2023-12-25 22:38:44,691 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int#0
[2023-12-25 22:38:44,691 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2023-12-25 22:38:44,692 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2023-12-25 22:38:45,666 INFO  L241             CfgBuilder]: Building ICFG
[2023-12-25 22:38:45,667 INFO  L267             CfgBuilder]: Building CFG for each procedure with an implementation
[2023-12-25 22:38:56,142 INFO  L282             CfgBuilder]: Performing block encoding
[2023-12-25 22:38:56,410 INFO  L304             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2023-12-25 22:38:56,410 INFO  L309             CfgBuilder]: Removed 1 assume(true) statements.
[2023-12-25 22:38:56,411 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.12 10:38:56 BoogieIcfgContainer
[2023-12-25 22:38:56,411 INFO  L131        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2023-12-25 22:38:56,413 INFO  L112        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2023-12-25 22:38:56,413 INFO  L270        PluginConnector]: Initializing TraceAbstraction...
[2023-12-25 22:38:56,416 INFO  L274        PluginConnector]: TraceAbstraction initialized
[2023-12-25 22:38:56,416 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.12 10:38:38" (1/3) ...
[2023-12-25 22:38:56,416 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f76b45d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.12 10:38:56, skipping insertion in model container
[2023-12-25 22:38:56,416 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 10:38:40" (2/3) ...
[2023-12-25 22:38:56,417 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f76b45d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.12 10:38:56, skipping insertion in model container
[2023-12-25 22:38:56,417 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.12 10:38:56" (3/3) ...
[2023-12-25 22:38:56,418 INFO  L112   eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.telephony.3.prop1-back-serstep.c
[2023-12-25 22:38:56,433 INFO  L204   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2023-12-25 22:38:56,433 INFO  L163   ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2023-12-25 22:38:56,531 INFO  L356      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2023-12-25 22:38:56,537 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;@122e183a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2023-12-25 22:38:56,537 INFO  L358      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2023-12-25 22:38:56,554 INFO  L276                IsEmpty]: Start isEmpty. Operand  has 5411 states, 5409 states have (on average 1.6699944536882974) internal successors, (9033), 5410 states have internal predecessors, (9033), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:38:56,582 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 575
[2023-12-25 22:38:56,583 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 22:38:56,584 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]
[2023-12-25 22:38:56,584 INFO  L420      AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 22:38:56,588 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 22:38:56,589 INFO  L85        PathProgramCache]: Analyzing trace with hash 1678328040, now seen corresponding path program 1 times
[2023-12-25 22:38:56,597 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 22:38:56,597 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [154806715]
[2023-12-25 22:38:56,597 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:38:56,598 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 22:38:57,236 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 22:38:59,228 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 22:38:59,228 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 22:38:59,228 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [154806715]
[2023-12-25 22:38:59,229 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [154806715] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 22:38:59,229 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 22:38:59,230 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-12-25 22:38:59,232 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1440578508]
[2023-12-25 22:38:59,232 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 22:38:59,239 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-12-25 22:38:59,239 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 22:38:59,273 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-12-25 22:38:59,273 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-12-25 22:38:59,287 INFO  L87              Difference]: Start difference. First operand  has 5411 states, 5409 states have (on average 1.6699944536882974) internal successors, (9033), 5410 states have internal predecessors, (9033), 0 states have call successors, (0), 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 143.5) internal successors, (574), 4 states have internal predecessors, (574), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:38:59,578 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 22:38:59,578 INFO  L93              Difference]: Finished difference Result 10635 states and 17757 transitions.
[2023-12-25 22:38:59,579 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-12-25 22:38:59,581 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 143.5) internal successors, (574), 4 states have internal predecessors, (574), 0 states have call successors, (0), 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 574
[2023-12-25 22:38:59,586 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 22:38:59,623 INFO  L225             Difference]: With dead ends: 10635
[2023-12-25 22:38:59,623 INFO  L226             Difference]: Without dead ends: 5411
[2023-12-25 22:38:59,638 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 22:38:59,642 INFO  L413           NwaCegarLoop]: 9026 mSDtfsCounter, 1 mSDsluCounter, 18047 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 27073 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2023-12-25 22:38:59,643 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 27073 Invalid, 13 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-12-25 22:38:59,667 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 5411 states.
[2023-12-25 22:38:59,789 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 5411 to 5411.
[2023-12-25 22:38:59,803 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 5411 states, 5410 states have (on average 1.6693160813308687) internal successors, (9031), 5410 states have internal predecessors, (9031), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:38:59,821 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 5411 states to 5411 states and 9031 transitions.
[2023-12-25 22:38:59,822 INFO  L78                 Accepts]: Start accepts. Automaton has 5411 states and 9031 transitions. Word has length 574
[2023-12-25 22:38:59,824 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 22:38:59,825 INFO  L495      AbstractCegarLoop]: Abstraction has 5411 states and 9031 transitions.
[2023-12-25 22:38:59,825 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 143.5) internal successors, (574), 4 states have internal predecessors, (574), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:38:59,825 INFO  L276                IsEmpty]: Start isEmpty. Operand 5411 states and 9031 transitions.
[2023-12-25 22:38:59,836 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 576
[2023-12-25 22:38:59,836 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 22:38:59,836 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]
[2023-12-25 22:38:59,836 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2023-12-25 22:38:59,837 INFO  L420      AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 22:38:59,837 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 22:38:59,837 INFO  L85        PathProgramCache]: Analyzing trace with hash 490290056, now seen corresponding path program 1 times
[2023-12-25 22:38:59,838 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 22:38:59,838 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [749069254]
[2023-12-25 22:38:59,838 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:38:59,839 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 22:39:00,165 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 22:39:00,985 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 22:39:00,986 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 22:39:00,986 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [749069254]
[2023-12-25 22:39:00,986 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [749069254] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 22:39:00,986 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 22:39:00,986 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-12-25 22:39:00,986 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [842913519]
[2023-12-25 22:39:00,987 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 22:39:00,988 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-12-25 22:39:00,988 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 22:39:00,989 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-12-25 22:39:00,990 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-12-25 22:39:00,990 INFO  L87              Difference]: Start difference. First operand 5411 states and 9031 transitions. Second operand  has 4 states, 4 states have (on average 143.75) internal successors, (575), 4 states have internal predecessors, (575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:39:01,170 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 22:39:01,172 INFO  L93              Difference]: Finished difference Result 10638 states and 17755 transitions.
[2023-12-25 22:39:01,172 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-12-25 22:39:01,173 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 143.75) internal successors, (575), 4 states have internal predecessors, (575), 0 states have call successors, (0), 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 575
[2023-12-25 22:39:01,174 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 22:39:01,193 INFO  L225             Difference]: With dead ends: 10638
[2023-12-25 22:39:01,193 INFO  L226             Difference]: Without dead ends: 5414
[2023-12-25 22:39:01,203 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 22:39:01,205 INFO  L413           NwaCegarLoop]: 9026 mSDtfsCounter, 1 mSDsluCounter, 18045 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 27071 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2023-12-25 22:39:01,205 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 27071 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-12-25 22:39:01,214 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 5414 states.
[2023-12-25 22:39:01,286 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 5414 to 5413.
[2023-12-25 22:39:01,309 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 5413 states, 5412 states have (on average 1.669068736141907) internal successors, (9033), 5412 states have internal predecessors, (9033), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:39:01,324 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 5413 states to 5413 states and 9033 transitions.
[2023-12-25 22:39:01,325 INFO  L78                 Accepts]: Start accepts. Automaton has 5413 states and 9033 transitions. Word has length 575
[2023-12-25 22:39:01,326 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 22:39:01,326 INFO  L495      AbstractCegarLoop]: Abstraction has 5413 states and 9033 transitions.
[2023-12-25 22:39:01,327 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 143.75) internal successors, (575), 4 states have internal predecessors, (575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:39:01,327 INFO  L276                IsEmpty]: Start isEmpty. Operand 5413 states and 9033 transitions.
[2023-12-25 22:39:01,337 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 577
[2023-12-25 22:39:01,337 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 22:39:01,338 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]
[2023-12-25 22:39:01,338 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2023-12-25 22:39:01,339 INFO  L420      AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 22:39:01,339 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 22:39:01,340 INFO  L85        PathProgramCache]: Analyzing trace with hash 2103660802, now seen corresponding path program 1 times
[2023-12-25 22:39:01,340 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 22:39:01,340 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [737753674]
[2023-12-25 22:39:01,340 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:39:01,340 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 22:39:01,595 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 22:39:02,480 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 22:39:02,480 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 22:39:02,480 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [737753674]
[2023-12-25 22:39:02,480 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [737753674] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 22:39:02,481 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 22:39:02,481 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-12-25 22:39:02,481 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1399864888]
[2023-12-25 22:39:02,481 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 22:39:02,482 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-12-25 22:39:02,482 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 22:39:02,483 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-12-25 22:39:02,483 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-12-25 22:39:02,484 INFO  L87              Difference]: Start difference. First operand 5413 states and 9033 transitions. Second operand  has 4 states, 4 states have (on average 144.0) internal successors, (576), 4 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:39:02,769 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 22:39:02,770 INFO  L93              Difference]: Finished difference Result 15859 states and 26468 transitions.
[2023-12-25 22:39:02,771 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2023-12-25 22:39:02,771 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 144.0) internal successors, (576), 4 states have internal predecessors, (576), 0 states have call successors, (0), 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 576
[2023-12-25 22:39:02,772 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 22:39:02,811 INFO  L225             Difference]: With dead ends: 15859
[2023-12-25 22:39:02,812 INFO  L226             Difference]: Without dead ends: 10633
[2023-12-25 22:39:02,823 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 22:39:02,826 INFO  L413           NwaCegarLoop]: 10131 mSDtfsCounter, 8709 mSDsluCounter, 19148 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8709 SdHoareTripleChecker+Valid, 29279 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2023-12-25 22:39:02,826 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [8709 Valid, 29279 Invalid, 19 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-12-25 22:39:02,840 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 10633 states.
[2023-12-25 22:39:02,944 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 10633 to 5415.
[2023-12-25 22:39:02,953 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 5415 states, 5414 states have (on average 1.6688215736978205) internal successors, (9035), 5414 states have internal predecessors, (9035), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:39:02,968 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 5415 states to 5415 states and 9035 transitions.
[2023-12-25 22:39:02,968 INFO  L78                 Accepts]: Start accepts. Automaton has 5415 states and 9035 transitions. Word has length 576
[2023-12-25 22:39:02,969 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 22:39:02,970 INFO  L495      AbstractCegarLoop]: Abstraction has 5415 states and 9035 transitions.
[2023-12-25 22:39:02,971 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 144.0) internal successors, (576), 4 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:39:02,972 INFO  L276                IsEmpty]: Start isEmpty. Operand 5415 states and 9035 transitions.
[2023-12-25 22:39:02,984 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 578
[2023-12-25 22:39:02,984 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 22:39:02,987 INFO  L195           NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:39:02,987 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2023-12-25 22:39:02,987 INFO  L420      AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 22:39:02,988 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 22:39:02,988 INFO  L85        PathProgramCache]: Analyzing trace with hash -1906081682, now seen corresponding path program 1 times
[2023-12-25 22:39:02,988 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 22:39:02,989 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [502697936]
[2023-12-25 22:39:02,989 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:39:02,989 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 22:39:03,184 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 22:39:04,056 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 22:39:04,056 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 22:39:04,056 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [502697936]
[2023-12-25 22:39:04,057 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [502697936] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 22:39:04,057 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 22:39:04,057 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-12-25 22:39:04,057 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2060647807]
[2023-12-25 22:39:04,057 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 22:39:04,058 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-12-25 22:39:04,058 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 22:39:04,059 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-12-25 22:39:04,059 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2023-12-25 22:39:04,059 INFO  L87              Difference]: Start difference. First operand 5415 states and 9035 transitions. Second operand  has 5 states, 5 states have (on average 115.4) internal successors, (577), 4 states have internal predecessors, (577), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:39:04,443 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 22:39:04,444 INFO  L93              Difference]: Finished difference Result 16528 states and 27579 transitions.
[2023-12-25 22:39:04,444 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2023-12-25 22:39:04,444 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 115.4) internal successors, (577), 4 states have internal predecessors, (577), 0 states have call successors, (0), 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 577
[2023-12-25 22:39:04,445 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 22:39:04,482 INFO  L225             Difference]: With dead ends: 16528
[2023-12-25 22:39:04,482 INFO  L226             Difference]: Without dead ends: 11300
[2023-12-25 22:39:04,495 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 22:39:04,501 INFO  L413           NwaCegarLoop]: 10130 mSDtfsCounter, 35696 mSDsluCounter, 18046 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35696 SdHoareTripleChecker+Valid, 28176 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-12-25 22:39:04,502 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [35696 Valid, 28176 Invalid, 16 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-12-25 22:39:04,516 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 11300 states.
[2023-12-25 22:39:04,651 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 11300 to 6078.
[2023-12-25 22:39:04,659 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 6078 states, 6077 states have (on average 1.668586473588942) internal successors, (10140), 6077 states have internal predecessors, (10140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:39:04,710 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 6078 states to 6078 states and 10140 transitions.
[2023-12-25 22:39:04,710 INFO  L78                 Accepts]: Start accepts. Automaton has 6078 states and 10140 transitions. Word has length 577
[2023-12-25 22:39:04,711 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 22:39:04,711 INFO  L495      AbstractCegarLoop]: Abstraction has 6078 states and 10140 transitions.
[2023-12-25 22:39:04,711 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 115.4) internal successors, (577), 4 states have internal predecessors, (577), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:39:04,711 INFO  L276                IsEmpty]: Start isEmpty. Operand 6078 states and 10140 transitions.
[2023-12-25 22:39:04,830 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 3969
[2023-12-25 22:39:04,830 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 22:39:04,832 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 22:39:04,832 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3
[2023-12-25 22:39:04,832 INFO  L420      AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 22:39:04,833 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 22:39:04,834 INFO  L85        PathProgramCache]: Analyzing trace with hash -39434123, now seen corresponding path program 1 times
[2023-12-25 22:39:04,834 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 22:39:04,834 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1747085740]
[2023-12-25 22:39:04,834 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:39:04,835 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 22:39:05,271 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 22:39:05,272 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1290892722]
[2023-12-25 22:39:05,273 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:39:05,273 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 22:39:05,273 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 22:39:05,280 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 22:39:05,287 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 22:39:09,684 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 22:39:09,792 INFO  L262         TraceCheckSpWp]: Trace formula consists of 17646 conjuncts, 6 conjunts are in the unsatisfiable core
[2023-12-25 22:39:09,896 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 22:39:10,095 INFO  L134       CoverageAnalysis]: Checked inductivity of 448 backedges. 448 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-25 22:39:10,096 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 22:39:10,097 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 22:39:10,097 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1747085740]
[2023-12-25 22:39:10,097 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 22:39:10,097 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1290892722]
[2023-12-25 22:39:10,097 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1290892722] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 22:39:10,097 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 22:39:10,098 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-12-25 22:39:10,098 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1980046412]
[2023-12-25 22:39:10,098 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 22:39:10,103 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-12-25 22:39:10,103 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 22:39:10,106 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-12-25 22:39:10,106 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-12-25 22:39:10,107 INFO  L87              Difference]: Start difference. First operand 6078 states and 10140 transitions. Second operand  has 4 states, 4 states have (on average 992.0) internal successors, (3968), 4 states have internal predecessors, (3968), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:39:10,335 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 22:39:10,335 INFO  L93              Difference]: Finished difference Result 11316 states and 18880 transitions.
[2023-12-25 22:39:10,336 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-12-25 22:39:10,338 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 992.0) internal successors, (3968), 4 states have internal predecessors, (3968), 0 states have call successors, (0), 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 3968
[2023-12-25 22:39:10,342 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 22:39:10,359 INFO  L225             Difference]: With dead ends: 11316
[2023-12-25 22:39:10,359 INFO  L226             Difference]: Without dead ends: 6088
[2023-12-25 22:39:10,366 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 3967 GetRequests, 3965 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 22:39:10,367 INFO  L413           NwaCegarLoop]: 9026 mSDtfsCounter, 12 mSDsluCounter, 18042 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 27068 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2023-12-25 22:39:10,367 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 27068 Invalid, 18 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-12-25 22:39:10,377 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 6088 states.
[2023-12-25 22:39:10,467 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 6088 to 6080.
[2023-12-25 22:39:10,476 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 6080 states, 6079 states have (on average 1.6683665076492844) internal successors, (10142), 6079 states have internal predecessors, (10142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:39:10,488 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 6080 states to 6080 states and 10142 transitions.
[2023-12-25 22:39:10,489 INFO  L78                 Accepts]: Start accepts. Automaton has 6080 states and 10142 transitions. Word has length 3968
[2023-12-25 22:39:10,492 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 22:39:10,492 INFO  L495      AbstractCegarLoop]: Abstraction has 6080 states and 10142 transitions.
[2023-12-25 22:39:10,494 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 992.0) internal successors, (3968), 4 states have internal predecessors, (3968), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:39:10,494 INFO  L276                IsEmpty]: Start isEmpty. Operand 6080 states and 10142 transitions.
[2023-12-25 22:39:10,651 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 3969
[2023-12-25 22:39:10,651 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 22:39:10,653 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 22:39:10,702 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0
[2023-12-25 22:39:10,858 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 22:39:10,859 INFO  L420      AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 22:39:10,860 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 22:39:10,861 INFO  L85        PathProgramCache]: Analyzing trace with hash 53168359, now seen corresponding path program 1 times
[2023-12-25 22:39:10,861 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 22:39:10,861 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1138597713]
[2023-12-25 22:39:10,861 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:39:10,861 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 22:39:11,313 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 22:39:11,314 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [668095213]
[2023-12-25 22:39:11,315 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:39:11,315 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 22:39:11,315 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 22:39:11,317 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 22:39:11,334 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 22:39:15,778 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 22:39:15,887 INFO  L262         TraceCheckSpWp]: Trace formula consists of 17647 conjuncts, 6 conjunts are in the unsatisfiable core
[2023-12-25 22:39:15,969 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 22:39:16,108 INFO  L134       CoverageAnalysis]: Checked inductivity of 448 backedges. 448 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-25 22:39:16,108 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 22:39:16,108 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 22:39:16,109 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1138597713]
[2023-12-25 22:39:16,109 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 22:39:16,112 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [668095213]
[2023-12-25 22:39:16,113 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [668095213] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 22:39:16,113 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 22:39:16,113 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-12-25 22:39:16,114 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [714587799]
[2023-12-25 22:39:16,114 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 22:39:16,118 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-12-25 22:39:16,118 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 22:39:16,122 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-12-25 22:39:16,122 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-12-25 22:39:16,123 INFO  L87              Difference]: Start difference. First operand 6080 states and 10142 transitions. Second operand  has 4 states, 4 states have (on average 992.0) internal successors, (3968), 4 states have internal predecessors, (3968), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:39:16,319 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 22:39:16,319 INFO  L93              Difference]: Finished difference Result 11319 states and 18882 transitions.
[2023-12-25 22:39:16,320 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-12-25 22:39:16,322 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 992.0) internal successors, (3968), 4 states have internal predecessors, (3968), 0 states have call successors, (0), 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 3968
[2023-12-25 22:39:16,326 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 22:39:16,339 INFO  L225             Difference]: With dead ends: 11319
[2023-12-25 22:39:16,339 INFO  L226             Difference]: Without dead ends: 6089
[2023-12-25 22:39:16,347 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 3967 GetRequests, 3965 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 22:39:16,348 INFO  L413           NwaCegarLoop]: 9026 mSDtfsCounter, 12 mSDsluCounter, 18042 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 27068 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2023-12-25 22:39:16,348 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 27068 Invalid, 17 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-12-25 22:39:16,355 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 6089 states.
[2023-12-25 22:39:16,438 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 6089 to 6081.
[2023-12-25 22:39:16,445 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 6081 states, 6080 states have (on average 1.6682565789473685) internal successors, (10143), 6080 states have internal predecessors, (10143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:39:16,456 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 6081 states to 6081 states and 10143 transitions.
[2023-12-25 22:39:16,456 INFO  L78                 Accepts]: Start accepts. Automaton has 6081 states and 10143 transitions. Word has length 3968
[2023-12-25 22:39:16,460 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 22:39:16,460 INFO  L495      AbstractCegarLoop]: Abstraction has 6081 states and 10143 transitions.
[2023-12-25 22:39:16,462 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 992.0) internal successors, (3968), 4 states have internal predecessors, (3968), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:39:16,462 INFO  L276                IsEmpty]: Start isEmpty. Operand 6081 states and 10143 transitions.
[2023-12-25 22:39:16,770 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 3969
[2023-12-25 22:39:16,770 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 22:39:16,772 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 22:39:16,822 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 22:39:16,972 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 22:39:16,973 INFO  L420      AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 22:39:16,974 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 22:39:16,975 INFO  L85        PathProgramCache]: Analyzing trace with hash 963073881, now seen corresponding path program 1 times
[2023-12-25 22:39:16,975 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 22:39:16,975 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [878437820]
[2023-12-25 22:39:16,975 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:39:16,976 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 22:39:17,314 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 22:39:17,314 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1773995766]
[2023-12-25 22:39:17,315 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:39:17,315 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 22:39:17,315 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 22:39:17,317 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 22:39:17,336 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 22:39:21,396 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 22:39:21,506 INFO  L262         TraceCheckSpWp]: Trace formula consists of 17648 conjuncts, 17 conjunts are in the unsatisfiable core
[2023-12-25 22:39:21,578 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 22:39:22,294 INFO  L134       CoverageAnalysis]: Checked inductivity of 448 backedges. 8 proven. 433 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked.
[2023-12-25 22:39:22,295 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-12-25 22:39:22,409 INFO  L134       CoverageAnalysis]: Checked inductivity of 448 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 440 trivial. 0 not checked.
[2023-12-25 22:39:22,409 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 22:39:22,409 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [878437820]
[2023-12-25 22:39:22,409 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 22:39:22,409 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1773995766]
[2023-12-25 22:39:22,410 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1773995766] provided 1 perfect and 1 imperfect interpolant sequences
[2023-12-25 22:39:22,410 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2023-12-25 22:39:22,411 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10
[2023-12-25 22:39:22,411 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [758745742]
[2023-12-25 22:39:22,411 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 22:39:22,415 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-12-25 22:39:22,415 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 22:39:22,418 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-12-25 22:39:22,418 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90
[2023-12-25 22:39:22,419 INFO  L87              Difference]: Start difference. First operand 6081 states and 10143 transitions. Second operand  has 5 states, 5 states have (on average 705.8) internal successors, (3529), 5 states have internal predecessors, (3529), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:39:28,094 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 22:39:28,094 INFO  L93              Difference]: Finished difference Result 21310 states and 35403 transitions.
[2023-12-25 22:39:28,095 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2023-12-25 22:39:28,096 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 705.8) internal successors, (3529), 5 states have internal predecessors, (3529), 0 states have call successors, (0), 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 3968
[2023-12-25 22:39:28,104 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 22:39:28,128 INFO  L225             Difference]: With dead ends: 21310
[2023-12-25 22:39:28,128 INFO  L226             Difference]: Without dead ends: 11305
[2023-12-25 22:39:28,142 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 7935 GetRequests, 7926 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 22:39:28,143 INFO  L413           NwaCegarLoop]: 15207 mSDtfsCounter, 23401 mSDsluCounter, 14585 mSDsCounter, 0 mSdLazyCounter, 6847 mSolverCounterSat, 453 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23401 SdHoareTripleChecker+Valid, 29792 SdHoareTripleChecker+Invalid, 7300 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 453 IncrementalHoareTripleChecker+Valid, 6847 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.4s IncrementalHoareTripleChecker+Time
[2023-12-25 22:39:28,143 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [23401 Valid, 29792 Invalid, 7300 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [453 Valid, 6847 Invalid, 0 Unknown, 0 Unchecked, 5.4s Time]
[2023-12-25 22:39:28,155 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 11305 states.
[2023-12-25 22:39:28,242 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 11305 to 6083.
[2023-12-25 22:39:28,250 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 6083 states, 6082 states have (on average 1.668036829990135) internal successors, (10145), 6082 states have internal predecessors, (10145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:39:28,258 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 6083 states to 6083 states and 10145 transitions.
[2023-12-25 22:39:28,258 INFO  L78                 Accepts]: Start accepts. Automaton has 6083 states and 10145 transitions. Word has length 3968
[2023-12-25 22:39:28,262 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 22:39:28,262 INFO  L495      AbstractCegarLoop]: Abstraction has 6083 states and 10145 transitions.
[2023-12-25 22:39:28,263 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 705.8) internal successors, (3529), 5 states have internal predecessors, (3529), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:39:28,263 INFO  L276                IsEmpty]: Start isEmpty. Operand 6083 states and 10145 transitions.
[2023-12-25 22:39:28,365 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 3970
[2023-12-25 22:39:28,366 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 22:39:28,368 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 22:39:28,432 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0
[2023-12-25 22:39:28,592 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 22:39:28,593 INFO  L420      AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 22:39:28,593 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 22:39:28,594 INFO  L85        PathProgramCache]: Analyzing trace with hash 715526803, now seen corresponding path program 1 times
[2023-12-25 22:39:28,594 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 22:39:28,594 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1857198746]
[2023-12-25 22:39:28,594 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:39:28,595 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 22:39:28,871 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 22:39:28,872 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1273082869]
[2023-12-25 22:39:28,873 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:39:28,873 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 22:39:28,873 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 22:39:28,874 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 22:39:28,890 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 22:39:32,825 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 22:39:32,933 INFO  L262         TraceCheckSpWp]: Trace formula consists of 17652 conjuncts, 17 conjunts are in the unsatisfiable core
[2023-12-25 22:39:33,001 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 22:39:33,711 INFO  L134       CoverageAnalysis]: Checked inductivity of 448 backedges. 10 proven. 433 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked.
[2023-12-25 22:39:33,712 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-12-25 22:39:33,811 INFO  L134       CoverageAnalysis]: Checked inductivity of 448 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 438 trivial. 0 not checked.
[2023-12-25 22:39:33,811 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 22:39:33,811 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1857198746]
[2023-12-25 22:39:33,811 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 22:39:33,812 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1273082869]
[2023-12-25 22:39:33,812 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1273082869] provided 1 perfect and 1 imperfect interpolant sequences
[2023-12-25 22:39:33,812 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2023-12-25 22:39:33,813 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10
[2023-12-25 22:39:33,813 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1879041413]
[2023-12-25 22:39:33,813 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 22:39:33,817 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-12-25 22:39:33,817 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 22:39:33,820 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-12-25 22:39:33,820 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90
[2023-12-25 22:39:33,820 INFO  L87              Difference]: Start difference. First operand 6083 states and 10145 transitions. Second operand  has 5 states, 5 states have (on average 706.4) internal successors, (3532), 5 states have internal predecessors, (3532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:39:39,015 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 22:39:39,015 INFO  L93              Difference]: Finished difference Result 21318 states and 35411 transitions.
[2023-12-25 22:39:39,015 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2023-12-25 22:39:39,024 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 706.4) internal successors, (3532), 5 states have internal predecessors, (3532), 0 states have call successors, (0), 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 3969
[2023-12-25 22:39:39,033 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 22:39:39,054 INFO  L225             Difference]: With dead ends: 21318
[2023-12-25 22:39:39,055 INFO  L226             Difference]: Without dead ends: 11306
[2023-12-25 22:39:39,068 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 7937 GetRequests, 7928 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 22:39:39,069 INFO  L413           NwaCegarLoop]: 15199 mSDtfsCounter, 23392 mSDsluCounter, 14580 mSDsCounter, 0 mSdLazyCounter, 6847 mSolverCounterSat, 453 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23392 SdHoareTripleChecker+Valid, 29779 SdHoareTripleChecker+Invalid, 7300 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 453 IncrementalHoareTripleChecker+Valid, 6847 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time
[2023-12-25 22:39:39,069 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [23392 Valid, 29779 Invalid, 7300 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [453 Valid, 6847 Invalid, 0 Unknown, 0 Unchecked, 4.9s Time]
[2023-12-25 22:39:39,080 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 11306 states.
[2023-12-25 22:39:39,162 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 11306 to 6085.
[2023-12-25 22:39:39,169 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 6085 states, 6084 states have (on average 1.6678172255095332) internal successors, (10147), 6084 states have internal predecessors, (10147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:39:39,176 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 6085 states to 6085 states and 10147 transitions.
[2023-12-25 22:39:39,176 INFO  L78                 Accepts]: Start accepts. Automaton has 6085 states and 10147 transitions. Word has length 3969
[2023-12-25 22:39:39,180 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 22:39:39,180 INFO  L495      AbstractCegarLoop]: Abstraction has 6085 states and 10147 transitions.
[2023-12-25 22:39:39,181 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 706.4) internal successors, (3532), 5 states have internal predecessors, (3532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:39:39,182 INFO  L276                IsEmpty]: Start isEmpty. Operand 6085 states and 10147 transitions.
[2023-12-25 22:39:39,368 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 3971
[2023-12-25 22:39:39,368 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 22:39:39,370 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 22:39:39,444 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 22:39:39,571 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 22:39:39,571 INFO  L420      AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 22:39:39,573 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 22:39:39,574 INFO  L85        PathProgramCache]: Analyzing trace with hash -1913557887, now seen corresponding path program 1 times
[2023-12-25 22:39:39,574 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 22:39:39,574 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [848592727]
[2023-12-25 22:39:39,574 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:39:39,574 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 22:39:39,848 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 22:39:39,848 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [54861238]
[2023-12-25 22:39:39,849 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:39:39,849 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 22:39:39,850 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 22:39:39,851 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 22:39:39,868 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 22:39:43,759 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 22:39:43,871 INFO  L262         TraceCheckSpWp]: Trace formula consists of 17655 conjuncts, 17 conjunts are in the unsatisfiable core
[2023-12-25 22:39:43,949 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 22:39:44,543 INFO  L134       CoverageAnalysis]: Checked inductivity of 448 backedges. 12 proven. 433 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked.
[2023-12-25 22:39:44,543 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-12-25 22:39:44,622 INFO  L134       CoverageAnalysis]: Checked inductivity of 448 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 436 trivial. 0 not checked.
[2023-12-25 22:39:44,622 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 22:39:44,622 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [848592727]
[2023-12-25 22:39:44,622 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 22:39:44,622 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [54861238]
[2023-12-25 22:39:44,622 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [54861238] provided 1 perfect and 1 imperfect interpolant sequences
[2023-12-25 22:39:44,622 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2023-12-25 22:39:44,624 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10
[2023-12-25 22:39:44,624 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1437272344]
[2023-12-25 22:39:44,624 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 22:39:44,627 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-12-25 22:39:44,627 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 22:39:44,630 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-12-25 22:39:44,630 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90
[2023-12-25 22:39:44,630 INFO  L87              Difference]: Start difference. First operand 6085 states and 10147 transitions. Second operand  has 5 states, 5 states have (on average 707.0) internal successors, (3535), 5 states have internal predecessors, (3535), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:39:50,621 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 22:39:50,621 INFO  L93              Difference]: Finished difference Result 21326 states and 35419 transitions.
[2023-12-25 22:39:50,622 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2023-12-25 22:39:50,623 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 707.0) internal successors, (3535), 5 states have internal predecessors, (3535), 0 states have call successors, (0), 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 3970
[2023-12-25 22:39:50,627 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 22:39:50,655 INFO  L225             Difference]: With dead ends: 21326
[2023-12-25 22:39:50,655 INFO  L226             Difference]: Without dead ends: 11307
[2023-12-25 22:39:50,669 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 7939 GetRequests, 7930 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 22:39:50,670 INFO  L413           NwaCegarLoop]: 15191 mSDtfsCounter, 16042 mSDsluCounter, 22121 mSDsCounter, 0 mSdLazyCounter, 9419 mSolverCounterSat, 453 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16042 SdHoareTripleChecker+Valid, 37312 SdHoareTripleChecker+Invalid, 9872 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 453 IncrementalHoareTripleChecker+Valid, 9419 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.7s IncrementalHoareTripleChecker+Time
[2023-12-25 22:39:50,670 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [16042 Valid, 37312 Invalid, 9872 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [453 Valid, 9419 Invalid, 0 Unknown, 0 Unchecked, 5.7s Time]
[2023-12-25 22:39:50,682 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 11307 states.
[2023-12-25 22:39:50,774 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 11307 to 6087.
[2023-12-25 22:39:50,781 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 6087 states, 6086 states have (on average 1.6675977653631284) internal successors, (10149), 6086 states have internal predecessors, (10149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:39:50,790 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 6087 states to 6087 states and 10149 transitions.
[2023-12-25 22:39:50,791 INFO  L78                 Accepts]: Start accepts. Automaton has 6087 states and 10149 transitions. Word has length 3970
[2023-12-25 22:39:50,796 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 22:39:50,796 INFO  L495      AbstractCegarLoop]: Abstraction has 6087 states and 10149 transitions.
[2023-12-25 22:39:50,797 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 707.0) internal successors, (3535), 5 states have internal predecessors, (3535), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:39:50,797 INFO  L276                IsEmpty]: Start isEmpty. Operand 6087 states and 10149 transitions.
[2023-12-25 22:39:50,886 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 3972
[2023-12-25 22:39:50,887 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 22:39:50,888 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 22:39:50,937 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 22:39:51,088 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 22:39:51,089 INFO  L420      AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 22:39:51,089 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 22:39:51,090 INFO  L85        PathProgramCache]: Analyzing trace with hash -1031752339, now seen corresponding path program 1 times
[2023-12-25 22:39:51,090 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 22:39:51,091 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1122871874]
[2023-12-25 22:39:51,091 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:39:51,091 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 22:39:51,345 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 22:39:51,346 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [215035988]
[2023-12-25 22:39:51,346 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:39:51,347 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 22:39:51,347 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 22:39:51,348 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 22:39:51,351 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 22:39:55,381 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 22:39:55,474 INFO  L262         TraceCheckSpWp]: Trace formula consists of 17658 conjuncts, 17 conjunts are in the unsatisfiable core
[2023-12-25 22:39:55,518 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 22:39:56,042 INFO  L134       CoverageAnalysis]: Checked inductivity of 448 backedges. 14 proven. 433 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2023-12-25 22:39:56,042 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-12-25 22:39:56,139 INFO  L134       CoverageAnalysis]: Checked inductivity of 448 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 434 trivial. 0 not checked.
[2023-12-25 22:39:56,139 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 22:39:56,139 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1122871874]
[2023-12-25 22:39:56,139 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 22:39:56,139 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [215035988]
[2023-12-25 22:39:56,139 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [215035988] provided 1 perfect and 1 imperfect interpolant sequences
[2023-12-25 22:39:56,139 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2023-12-25 22:39:56,140 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10
[2023-12-25 22:39:56,141 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1123918626]
[2023-12-25 22:39:56,141 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 22:39:56,144 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-12-25 22:39:56,144 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 22:39:56,146 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-12-25 22:39:56,146 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90
[2023-12-25 22:39:56,147 INFO  L87              Difference]: Start difference. First operand 6087 states and 10149 transitions. Second operand  has 5 states, 5 states have (on average 707.6) internal successors, (3538), 5 states have internal predecessors, (3538), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:40:01,297 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 22:40:01,297 INFO  L93              Difference]: Finished difference Result 21334 states and 35427 transitions.
[2023-12-25 22:40:01,298 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2023-12-25 22:40:01,299 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 707.6) internal successors, (3538), 5 states have internal predecessors, (3538), 0 states have call successors, (0), 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 3971
[2023-12-25 22:40:01,302 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 22:40:01,318 INFO  L225             Difference]: With dead ends: 21334
[2023-12-25 22:40:01,319 INFO  L226             Difference]: Without dead ends: 11308
[2023-12-25 22:40:01,330 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 7941 GetRequests, 7932 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 22:40:01,331 INFO  L413           NwaCegarLoop]: 15183 mSDtfsCounter, 23379 mSDsluCounter, 14569 mSDsCounter, 0 mSdLazyCounter, 6847 mSolverCounterSat, 453 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23379 SdHoareTripleChecker+Valid, 29752 SdHoareTripleChecker+Invalid, 7300 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 453 IncrementalHoareTripleChecker+Valid, 6847 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time
[2023-12-25 22:40:01,331 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [23379 Valid, 29752 Invalid, 7300 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [453 Valid, 6847 Invalid, 0 Unknown, 0 Unchecked, 4.9s Time]
[2023-12-25 22:40:01,342 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 11308 states.
[2023-12-25 22:40:01,424 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 11308 to 6089.
[2023-12-25 22:40:01,429 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 6089 states, 6088 states have (on average 1.6673784494086727) internal successors, (10151), 6088 states have internal predecessors, (10151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:40:01,436 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 6089 states to 6089 states and 10151 transitions.
[2023-12-25 22:40:01,437 INFO  L78                 Accepts]: Start accepts. Automaton has 6089 states and 10151 transitions. Word has length 3971
[2023-12-25 22:40:01,441 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 22:40:01,441 INFO  L495      AbstractCegarLoop]: Abstraction has 6089 states and 10151 transitions.
[2023-12-25 22:40:01,442 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 707.6) internal successors, (3538), 5 states have internal predecessors, (3538), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:40:01,442 INFO  L276                IsEmpty]: Start isEmpty. Operand 6089 states and 10151 transitions.
[2023-12-25 22:40:01,541 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 3973
[2023-12-25 22:40:01,542 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 22:40:01,544 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 22:40:01,596 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 22:40:01,752 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 22:40:01,752 INFO  L420      AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 22:40:01,753 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 22:40:01,754 INFO  L85        PathProgramCache]: Analyzing trace with hash -721365337, now seen corresponding path program 1 times
[2023-12-25 22:40:01,754 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 22:40:01,754 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [32650437]
[2023-12-25 22:40:01,754 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:40:01,754 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 22:40:02,019 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 22:40:02,020 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1834872285]
[2023-12-25 22:40:02,021 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:40:02,021 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 22:40:02,021 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 22:40:02,022 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 22:40:02,045 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 22:40:06,074 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 22:40:06,175 INFO  L262         TraceCheckSpWp]: Trace formula consists of 17661 conjuncts, 17 conjunts are in the unsatisfiable core
[2023-12-25 22:40:06,215 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 22:40:06,740 INFO  L134       CoverageAnalysis]: Checked inductivity of 448 backedges. 15 proven. 433 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-25 22:40:06,740 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-12-25 22:40:06,821 INFO  L134       CoverageAnalysis]: Checked inductivity of 448 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 432 trivial. 0 not checked.
[2023-12-25 22:40:06,821 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 22:40:06,821 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [32650437]
[2023-12-25 22:40:06,821 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 22:40:06,822 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1834872285]
[2023-12-25 22:40:06,822 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1834872285] provided 1 perfect and 1 imperfect interpolant sequences
[2023-12-25 22:40:06,822 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2023-12-25 22:40:06,823 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10
[2023-12-25 22:40:06,823 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [800297070]
[2023-12-25 22:40:06,823 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 22:40:06,827 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-12-25 22:40:06,827 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 22:40:06,830 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-12-25 22:40:06,830 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90
[2023-12-25 22:40:06,831 INFO  L87              Difference]: Start difference. First operand 6089 states and 10151 transitions. Second operand  has 5 states, 5 states have (on average 708.2) internal successors, (3541), 5 states have internal predecessors, (3541), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:40:12,101 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 22:40:12,101 INFO  L93              Difference]: Finished difference Result 21342 states and 35435 transitions.
[2023-12-25 22:40:12,101 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2023-12-25 22:40:12,102 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 708.2) internal successors, (3541), 5 states have internal predecessors, (3541), 0 states have call successors, (0), 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 3972
[2023-12-25 22:40:12,105 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 22:40:12,118 INFO  L225             Difference]: With dead ends: 21342
[2023-12-25 22:40:12,118 INFO  L226             Difference]: Without dead ends: 11309
[2023-12-25 22:40:12,127 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 7943 GetRequests, 7934 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 22:40:12,127 INFO  L413           NwaCegarLoop]: 15175 mSDtfsCounter, 23371 mSDsluCounter, 14564 mSDsCounter, 0 mSdLazyCounter, 6847 mSolverCounterSat, 453 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23371 SdHoareTripleChecker+Valid, 29739 SdHoareTripleChecker+Invalid, 7300 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 453 IncrementalHoareTripleChecker+Valid, 6847 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time
[2023-12-25 22:40:12,127 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [23371 Valid, 29739 Invalid, 7300 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [453 Valid, 6847 Invalid, 0 Unknown, 0 Unchecked, 5.0s Time]
[2023-12-25 22:40:12,136 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 11309 states.
[2023-12-25 22:40:12,215 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 11309 to 6091.
[2023-12-25 22:40:12,220 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 6091 states, 6090 states have (on average 1.667159277504105) internal successors, (10153), 6090 states have internal predecessors, (10153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:40:12,227 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 6091 states to 6091 states and 10153 transitions.
[2023-12-25 22:40:12,227 INFO  L78                 Accepts]: Start accepts. Automaton has 6091 states and 10153 transitions. Word has length 3972
[2023-12-25 22:40:12,231 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 22:40:12,231 INFO  L495      AbstractCegarLoop]: Abstraction has 6091 states and 10153 transitions.
[2023-12-25 22:40:12,232 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 708.2) internal successors, (3541), 5 states have internal predecessors, (3541), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:40:12,232 INFO  L276                IsEmpty]: Start isEmpty. Operand 6091 states and 10153 transitions.
[2023-12-25 22:40:12,331 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 3974
[2023-12-25 22:40:12,331 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 22:40:12,333 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 22:40:12,383 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 22:40:12,550 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 22:40:12,550 INFO  L420      AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 22:40:12,550 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 22:40:12,551 INFO  L85        PathProgramCache]: Analyzing trace with hash -1361633207, now seen corresponding path program 1 times
[2023-12-25 22:40:12,551 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 22:40:12,552 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [271638279]
[2023-12-25 22:40:12,552 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:40:12,552 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 22:40:12,804 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 22:40:12,804 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1816446327]
[2023-12-25 22:40:12,805 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:40:12,805 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 22:40:12,805 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 22:40:12,806 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 22:40:12,822 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 22:40:16,626 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 22:40:16,723 INFO  L262         TraceCheckSpWp]: Trace formula consists of 17665 conjuncts, 17 conjunts are in the unsatisfiable core
[2023-12-25 22:40:16,765 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 22:40:17,275 INFO  L134       CoverageAnalysis]: Checked inductivity of 448 backedges. 16 proven. 432 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-25 22:40:17,276 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-12-25 22:40:17,360 INFO  L134       CoverageAnalysis]: Checked inductivity of 448 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 430 trivial. 0 not checked.
[2023-12-25 22:40:17,360 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 22:40:17,360 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [271638279]
[2023-12-25 22:40:17,360 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 22:40:17,360 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1816446327]
[2023-12-25 22:40:17,360 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1816446327] provided 1 perfect and 1 imperfect interpolant sequences
[2023-12-25 22:40:17,360 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2023-12-25 22:40:17,361 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10
[2023-12-25 22:40:17,361 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1507589149]
[2023-12-25 22:40:17,361 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 22:40:17,364 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-12-25 22:40:17,364 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 22:40:17,366 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-12-25 22:40:17,366 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90
[2023-12-25 22:40:17,367 INFO  L87              Difference]: Start difference. First operand 6091 states and 10153 transitions. Second operand  has 5 states, 5 states have (on average 708.8) internal successors, (3544), 5 states have internal predecessors, (3544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:40:23,189 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 22:40:23,189 INFO  L93              Difference]: Finished difference Result 21350 states and 35443 transitions.
[2023-12-25 22:40:23,190 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2023-12-25 22:40:23,190 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 708.8) internal successors, (3544), 5 states have internal predecessors, (3544), 0 states have call successors, (0), 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 3973
[2023-12-25 22:40:23,193 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 22:40:23,200 INFO  L225             Difference]: With dead ends: 21350
[2023-12-25 22:40:23,200 INFO  L226             Difference]: Without dead ends: 11310
[2023-12-25 22:40:23,204 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 7945 GetRequests, 7936 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 22:40:23,204 INFO  L413           NwaCegarLoop]: 15167 mSDtfsCounter, 16031 mSDsluCounter, 21435 mSDsCounter, 0 mSdLazyCounter, 8663 mSolverCounterSat, 453 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16031 SdHoareTripleChecker+Valid, 36602 SdHoareTripleChecker+Invalid, 9116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 453 IncrementalHoareTripleChecker+Valid, 8663 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.5s IncrementalHoareTripleChecker+Time
[2023-12-25 22:40:23,205 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [16031 Valid, 36602 Invalid, 9116 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [453 Valid, 8663 Invalid, 0 Unknown, 0 Unchecked, 5.5s Time]
[2023-12-25 22:40:23,213 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 11310 states.
[2023-12-25 22:40:23,277 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 11310 to 6093.
[2023-12-25 22:40:23,282 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 6093 states, 6092 states have (on average 1.666940249507551) internal successors, (10155), 6092 states have internal predecessors, (10155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:40:23,289 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 6093 states to 6093 states and 10155 transitions.
[2023-12-25 22:40:23,289 INFO  L78                 Accepts]: Start accepts. Automaton has 6093 states and 10155 transitions. Word has length 3973
[2023-12-25 22:40:23,293 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 22:40:23,293 INFO  L495      AbstractCegarLoop]: Abstraction has 6093 states and 10155 transitions.
[2023-12-25 22:40:23,293 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 708.8) internal successors, (3544), 5 states have internal predecessors, (3544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:40:23,293 INFO  L276                IsEmpty]: Start isEmpty. Operand 6093 states and 10155 transitions.
[2023-12-25 22:40:23,392 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 3975
[2023-12-25 22:40:23,393 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 22:40:23,395 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 22:40:23,454 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 22:40:23,608 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 22:40:23,609 INFO  L420      AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 22:40:23,609 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 22:40:23,610 INFO  L85        PathProgramCache]: Analyzing trace with hash 1939807439, now seen corresponding path program 1 times
[2023-12-25 22:40:23,610 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 22:40:23,610 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [481814799]
[2023-12-25 22:40:23,611 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:40:23,611 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 22:40:23,890 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 22:40:23,890 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [564291922]
[2023-12-25 22:40:23,891 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:40:23,891 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 22:40:23,892 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 22:40:23,893 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 22:40:23,915 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 22:40:27,725 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 22:40:27,830 INFO  L262         TraceCheckSpWp]: Trace formula consists of 17668 conjuncts, 17 conjunts are in the unsatisfiable core
[2023-12-25 22:40:27,872 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 22:40:28,383 INFO  L134       CoverageAnalysis]: Checked inductivity of 448 backedges. 18 proven. 430 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-25 22:40:28,383 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-12-25 22:40:28,468 INFO  L134       CoverageAnalysis]: Checked inductivity of 448 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 428 trivial. 0 not checked.
[2023-12-25 22:40:28,468 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 22:40:28,468 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [481814799]
[2023-12-25 22:40:28,468 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 22:40:28,468 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [564291922]
[2023-12-25 22:40:28,469 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [564291922] provided 1 perfect and 1 imperfect interpolant sequences
[2023-12-25 22:40:28,469 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2023-12-25 22:40:28,469 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10
[2023-12-25 22:40:28,469 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1126359942]
[2023-12-25 22:40:28,469 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 22:40:28,472 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-12-25 22:40:28,472 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 22:40:28,474 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-12-25 22:40:28,474 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90
[2023-12-25 22:40:28,475 INFO  L87              Difference]: Start difference. First operand 6093 states and 10155 transitions. Second operand  has 5 states, 5 states have (on average 709.4) internal successors, (3547), 5 states have internal predecessors, (3547), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:40:33,698 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 22:40:33,699 INFO  L93              Difference]: Finished difference Result 21358 states and 35451 transitions.
[2023-12-25 22:40:33,699 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2023-12-25 22:40:33,700 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 709.4) internal successors, (3547), 5 states have internal predecessors, (3547), 0 states have call successors, (0), 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 3974
[2023-12-25 22:40:33,702 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 22:40:33,709 INFO  L225             Difference]: With dead ends: 21358
[2023-12-25 22:40:33,709 INFO  L226             Difference]: Without dead ends: 11311
[2023-12-25 22:40:33,713 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 7947 GetRequests, 7938 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 22:40:33,714 INFO  L413           NwaCegarLoop]: 15159 mSDtfsCounter, 23355 mSDsluCounter, 14554 mSDsCounter, 0 mSdLazyCounter, 6847 mSolverCounterSat, 453 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23355 SdHoareTripleChecker+Valid, 29713 SdHoareTripleChecker+Invalid, 7300 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 453 IncrementalHoareTripleChecker+Valid, 6847 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time
[2023-12-25 22:40:33,714 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [23355 Valid, 29713 Invalid, 7300 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [453 Valid, 6847 Invalid, 0 Unknown, 0 Unchecked, 5.0s Time]
[2023-12-25 22:40:33,722 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 11311 states.
[2023-12-25 22:40:33,788 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 11311 to 6095.
[2023-12-25 22:40:33,793 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 6095 states, 6094 states have (on average 1.666721365277322) internal successors, (10157), 6094 states have internal predecessors, (10157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:40:33,800 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 6095 states to 6095 states and 10157 transitions.
[2023-12-25 22:40:33,800 INFO  L78                 Accepts]: Start accepts. Automaton has 6095 states and 10157 transitions. Word has length 3974
[2023-12-25 22:40:33,803 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 22:40:33,804 INFO  L495      AbstractCegarLoop]: Abstraction has 6095 states and 10157 transitions.
[2023-12-25 22:40:33,804 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 709.4) internal successors, (3547), 5 states have internal predecessors, (3547), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:40:33,804 INFO  L276                IsEmpty]: Start isEmpty. Operand 6095 states and 10157 transitions.
[2023-12-25 22:40:33,900 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 3976
[2023-12-25 22:40:33,900 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 22:40:33,903 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 22:40:33,964 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0
[2023-12-25 22:40:34,118 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 22:40:34,118 INFO  L420      AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 22:40:34,119 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 22:40:34,120 INFO  L85        PathProgramCache]: Analyzing trace with hash 849690403, now seen corresponding path program 1 times
[2023-12-25 22:40:34,120 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 22:40:34,120 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [275192952]
[2023-12-25 22:40:34,121 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:40:34,121 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 22:40:34,373 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 22:40:34,373 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [461035894]
[2023-12-25 22:40:34,374 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:40:34,374 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 22:40:34,374 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 22:40:34,375 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 22:40:34,383 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 22:40:38,266 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 22:40:38,367 INFO  L262         TraceCheckSpWp]: Trace formula consists of 17671 conjuncts, 17 conjunts are in the unsatisfiable core
[2023-12-25 22:40:38,411 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 22:40:38,919 INFO  L134       CoverageAnalysis]: Checked inductivity of 448 backedges. 20 proven. 428 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-25 22:40:38,919 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-12-25 22:40:39,004 INFO  L134       CoverageAnalysis]: Checked inductivity of 448 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 426 trivial. 0 not checked.
[2023-12-25 22:40:39,005 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 22:40:39,005 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [275192952]
[2023-12-25 22:40:39,005 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 22:40:39,005 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [461035894]
[2023-12-25 22:40:39,005 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [461035894] provided 1 perfect and 1 imperfect interpolant sequences
[2023-12-25 22:40:39,005 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2023-12-25 22:40:39,006 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10
[2023-12-25 22:40:39,006 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2105242624]
[2023-12-25 22:40:39,006 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 22:40:39,009 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-12-25 22:40:39,009 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 22:40:39,012 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-12-25 22:40:39,012 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90
[2023-12-25 22:40:39,013 INFO  L87              Difference]: Start difference. First operand 6095 states and 10157 transitions. Second operand  has 5 states, 5 states have (on average 710.0) internal successors, (3550), 5 states have internal predecessors, (3550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:40:44,174 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 22:40:44,174 INFO  L93              Difference]: Finished difference Result 21366 states and 35459 transitions.
[2023-12-25 22:40:44,174 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2023-12-25 22:40:44,175 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 710.0) internal successors, (3550), 5 states have internal predecessors, (3550), 0 states have call successors, (0), 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 3975
[2023-12-25 22:40:44,178 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 22:40:44,188 INFO  L225             Difference]: With dead ends: 21366
[2023-12-25 22:40:44,188 INFO  L226             Difference]: Without dead ends: 11312
[2023-12-25 22:40:44,197 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 7949 GetRequests, 7940 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 22:40:44,198 INFO  L413           NwaCegarLoop]: 15151 mSDtfsCounter, 23347 mSDsluCounter, 14549 mSDsCounter, 0 mSdLazyCounter, 6847 mSolverCounterSat, 453 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23347 SdHoareTripleChecker+Valid, 29700 SdHoareTripleChecker+Invalid, 7300 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 453 IncrementalHoareTripleChecker+Valid, 6847 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time
[2023-12-25 22:40:44,198 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [23347 Valid, 29700 Invalid, 7300 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [453 Valid, 6847 Invalid, 0 Unknown, 0 Unchecked, 4.9s Time]
[2023-12-25 22:40:44,208 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 11312 states.
[2023-12-25 22:40:44,281 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 11312 to 6097.
[2023-12-25 22:40:44,286 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 6097 states, 6096 states have (on average 1.666502624671916) internal successors, (10159), 6096 states have internal predecessors, (10159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:40:44,293 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 6097 states to 6097 states and 10159 transitions.
[2023-12-25 22:40:44,293 INFO  L78                 Accepts]: Start accepts. Automaton has 6097 states and 10159 transitions. Word has length 3975
[2023-12-25 22:40:44,296 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 22:40:44,296 INFO  L495      AbstractCegarLoop]: Abstraction has 6097 states and 10159 transitions.
[2023-12-25 22:40:44,297 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 710.0) internal successors, (3550), 5 states have internal predecessors, (3550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:40:44,297 INFO  L276                IsEmpty]: Start isEmpty. Operand 6097 states and 10159 transitions.
[2023-12-25 22:40:44,500 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 3977
[2023-12-25 22:40:44,501 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 22:40:44,503 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 22:40:44,564 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 22:40:44,724 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 22:40:44,724 INFO  L420      AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 22:40:44,726 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 22:40:44,727 INFO  L85        PathProgramCache]: Analyzing trace with hash 258861813, now seen corresponding path program 1 times
[2023-12-25 22:40:44,727 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 22:40:44,727 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [644842929]
[2023-12-25 22:40:44,727 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:40:44,727 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 22:40:44,986 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 22:40:44,986 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1450370912]
[2023-12-25 22:40:44,987 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:40:44,987 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 22:40:44,987 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 22:40:44,989 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 22:40:44,991 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 22:40:48,790 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 22:40:48,895 INFO  L262         TraceCheckSpWp]: Trace formula consists of 17674 conjuncts, 17 conjunts are in the unsatisfiable core
[2023-12-25 22:40:48,935 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 22:40:49,500 INFO  L134       CoverageAnalysis]: Checked inductivity of 448 backedges. 22 proven. 426 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-25 22:40:49,501 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-12-25 22:40:49,612 INFO  L134       CoverageAnalysis]: Checked inductivity of 448 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 424 trivial. 0 not checked.
[2023-12-25 22:40:49,612 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 22:40:49,613 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [644842929]
[2023-12-25 22:40:49,613 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 22:40:49,613 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1450370912]
[2023-12-25 22:40:49,613 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1450370912] provided 1 perfect and 1 imperfect interpolant sequences
[2023-12-25 22:40:49,613 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2023-12-25 22:40:49,614 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10
[2023-12-25 22:40:49,614 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1723977476]
[2023-12-25 22:40:49,614 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 22:40:49,617 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-12-25 22:40:49,617 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 22:40:49,620 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-12-25 22:40:49,620 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90
[2023-12-25 22:40:49,620 INFO  L87              Difference]: Start difference. First operand 6097 states and 10159 transitions. Second operand  has 5 states, 5 states have (on average 710.6) internal successors, (3553), 5 states have internal predecessors, (3553), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:40:54,790 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 22:40:54,791 INFO  L93              Difference]: Finished difference Result 21374 states and 35467 transitions.
[2023-12-25 22:40:54,791 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2023-12-25 22:40:54,792 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 710.6) internal successors, (3553), 5 states have internal predecessors, (3553), 0 states have call successors, (0), 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 3976
[2023-12-25 22:40:54,795 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 22:40:54,805 INFO  L225             Difference]: With dead ends: 21374
[2023-12-25 22:40:54,805 INFO  L226             Difference]: Without dead ends: 11313
[2023-12-25 22:40:54,813 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 7951 GetRequests, 7942 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 22:40:54,813 INFO  L413           NwaCegarLoop]: 15143 mSDtfsCounter, 23339 mSDsluCounter, 14544 mSDsCounter, 0 mSdLazyCounter, 6847 mSolverCounterSat, 453 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23339 SdHoareTripleChecker+Valid, 29687 SdHoareTripleChecker+Invalid, 7300 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 453 IncrementalHoareTripleChecker+Valid, 6847 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time
[2023-12-25 22:40:54,814 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [23339 Valid, 29687 Invalid, 7300 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [453 Valid, 6847 Invalid, 0 Unknown, 0 Unchecked, 4.9s Time]
[2023-12-25 22:40:54,822 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 11313 states.
[2023-12-25 22:40:54,895 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 11313 to 6099.
[2023-12-25 22:40:54,900 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 6099 states, 6098 states have (on average 1.6662840275500164) internal successors, (10161), 6098 states have internal predecessors, (10161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:40:54,907 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 6099 states to 6099 states and 10161 transitions.
[2023-12-25 22:40:54,907 INFO  L78                 Accepts]: Start accepts. Automaton has 6099 states and 10161 transitions. Word has length 3976
[2023-12-25 22:40:54,910 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 22:40:54,911 INFO  L495      AbstractCegarLoop]: Abstraction has 6099 states and 10161 transitions.
[2023-12-25 22:40:54,912 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 710.6) internal successors, (3553), 5 states have internal predecessors, (3553), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:40:54,912 INFO  L276                IsEmpty]: Start isEmpty. Operand 6099 states and 10161 transitions.
[2023-12-25 22:40:54,999 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 3978
[2023-12-25 22:40:54,999 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 22:40:55,001 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 22:40:55,053 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0
[2023-12-25 22:40:55,216 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 22:40:55,216 INFO  L420      AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 22:40:55,217 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 22:40:55,218 INFO  L85        PathProgramCache]: Analyzing trace with hash 530084607, now seen corresponding path program 1 times
[2023-12-25 22:40:55,218 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 22:40:55,218 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1125283607]
[2023-12-25 22:40:55,218 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:40:55,218 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 22:40:55,474 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 22:40:55,474 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2108317367]
[2023-12-25 22:40:55,475 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:40:55,475 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 22:40:55,475 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 22:40:55,476 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 22:40:55,500 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 22:40:59,499 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 22:40:59,607 INFO  L262         TraceCheckSpWp]: Trace formula consists of 17678 conjuncts, 17 conjunts are in the unsatisfiable core
[2023-12-25 22:40:59,648 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 22:41:00,156 INFO  L134       CoverageAnalysis]: Checked inductivity of 448 backedges. 24 proven. 424 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-25 22:41:00,156 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-12-25 22:41:00,247 INFO  L134       CoverageAnalysis]: Checked inductivity of 448 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 422 trivial. 0 not checked.
[2023-12-25 22:41:00,248 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 22:41:00,248 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1125283607]
[2023-12-25 22:41:00,248 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 22:41:00,248 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2108317367]
[2023-12-25 22:41:00,248 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [2108317367] provided 1 perfect and 1 imperfect interpolant sequences
[2023-12-25 22:41:00,248 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2023-12-25 22:41:00,249 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10
[2023-12-25 22:41:00,249 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [543844908]
[2023-12-25 22:41:00,249 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 22:41:00,252 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-12-25 22:41:00,253 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 22:41:00,255 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-12-25 22:41:00,255 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90
[2023-12-25 22:41:00,256 INFO  L87              Difference]: Start difference. First operand 6099 states and 10161 transitions. Second operand  has 5 states, 5 states have (on average 711.2) internal successors, (3556), 5 states have internal predecessors, (3556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:41:05,971 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 22:41:05,972 INFO  L93              Difference]: Finished difference Result 21382 states and 35475 transitions.
[2023-12-25 22:41:05,972 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2023-12-25 22:41:05,973 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 711.2) internal successors, (3556), 5 states have internal predecessors, (3556), 0 states have call successors, (0), 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 3977
[2023-12-25 22:41:05,976 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 22:41:05,987 INFO  L225             Difference]: With dead ends: 21382
[2023-12-25 22:41:05,987 INFO  L226             Difference]: Without dead ends: 11314
[2023-12-25 22:41:05,995 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 7953 GetRequests, 7944 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 22:41:05,996 INFO  L413           NwaCegarLoop]: 15135 mSDtfsCounter, 16011 mSDsluCounter, 21403 mSDsCounter, 0 mSdLazyCounter, 8663 mSolverCounterSat, 453 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16011 SdHoareTripleChecker+Valid, 36538 SdHoareTripleChecker+Invalid, 9116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 453 IncrementalHoareTripleChecker+Valid, 8663 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.4s IncrementalHoareTripleChecker+Time
[2023-12-25 22:41:05,996 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [16011 Valid, 36538 Invalid, 9116 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [453 Valid, 8663 Invalid, 0 Unknown, 0 Unchecked, 5.4s Time]
[2023-12-25 22:41:06,005 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 11314 states.
[2023-12-25 22:41:06,073 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 11314 to 6101.
[2023-12-25 22:41:06,079 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 6101 states, 6100 states have (on average 1.6660655737704917) internal successors, (10163), 6100 states have internal predecessors, (10163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:41:06,087 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 6101 states to 6101 states and 10163 transitions.
[2023-12-25 22:41:06,087 INFO  L78                 Accepts]: Start accepts. Automaton has 6101 states and 10163 transitions. Word has length 3977
[2023-12-25 22:41:06,090 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 22:41:06,090 INFO  L495      AbstractCegarLoop]: Abstraction has 6101 states and 10163 transitions.
[2023-12-25 22:41:06,091 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 711.2) internal successors, (3556), 5 states have internal predecessors, (3556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:41:06,091 INFO  L276                IsEmpty]: Start isEmpty. Operand 6101 states and 10163 transitions.
[2023-12-25 22:41:06,188 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 3979
[2023-12-25 22:41:06,188 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 22:41:06,189 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 22:41:06,247 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 22:41:06,411 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 22:41:06,411 INFO  L420      AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 22:41:06,411 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 22:41:06,412 INFO  L85        PathProgramCache]: Analyzing trace with hash 994075165, now seen corresponding path program 1 times
[2023-12-25 22:41:06,413 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 22:41:06,413 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1582855666]
[2023-12-25 22:41:06,413 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:41:06,413 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 22:41:06,780 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 22:41:06,780 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1352642052]
[2023-12-25 22:41:06,781 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:41:06,781 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 22:41:06,781 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 22:41:06,782 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 22:41:06,802 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 22:41:10,707 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 22:41:10,813 INFO  L262         TraceCheckSpWp]: Trace formula consists of 17681 conjuncts, 17 conjunts are in the unsatisfiable core
[2023-12-25 22:41:10,853 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 22:41:11,359 INFO  L134       CoverageAnalysis]: Checked inductivity of 448 backedges. 26 proven. 422 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-25 22:41:11,359 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-12-25 22:41:11,485 INFO  L134       CoverageAnalysis]: Checked inductivity of 448 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked.
[2023-12-25 22:41:11,486 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 22:41:11,486 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1582855666]
[2023-12-25 22:41:11,486 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 22:41:11,486 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1352642052]
[2023-12-25 22:41:11,486 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1352642052] provided 1 perfect and 1 imperfect interpolant sequences
[2023-12-25 22:41:11,486 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2023-12-25 22:41:11,487 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10
[2023-12-25 22:41:11,487 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1652120749]
[2023-12-25 22:41:11,487 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 22:41:11,489 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-12-25 22:41:11,489 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 22:41:11,492 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-12-25 22:41:11,492 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90
[2023-12-25 22:41:11,492 INFO  L87              Difference]: Start difference. First operand 6101 states and 10163 transitions. Second operand  has 5 states, 5 states have (on average 711.8) internal successors, (3559), 5 states have internal predecessors, (3559), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:41:17,229 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 22:41:17,229 INFO  L93              Difference]: Finished difference Result 21390 states and 35483 transitions.
[2023-12-25 22:41:17,229 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2023-12-25 22:41:17,230 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 711.8) internal successors, (3559), 5 states have internal predecessors, (3559), 0 states have call successors, (0), 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 3978
[2023-12-25 22:41:17,233 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 22:41:17,244 INFO  L225             Difference]: With dead ends: 21390
[2023-12-25 22:41:17,244 INFO  L226             Difference]: Without dead ends: 11315
[2023-12-25 22:41:17,252 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 7955 GetRequests, 7946 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 22:41:17,252 INFO  L413           NwaCegarLoop]: 15127 mSDtfsCounter, 16006 mSDsluCounter, 21395 mSDsCounter, 0 mSdLazyCounter, 8663 mSolverCounterSat, 453 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16006 SdHoareTripleChecker+Valid, 36522 SdHoareTripleChecker+Invalid, 9116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 453 IncrementalHoareTripleChecker+Valid, 8663 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.5s IncrementalHoareTripleChecker+Time
[2023-12-25 22:41:17,253 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [16006 Valid, 36522 Invalid, 9116 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [453 Valid, 8663 Invalid, 0 Unknown, 0 Unchecked, 5.5s Time]
[2023-12-25 22:41:17,260 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 11315 states.
[2023-12-25 22:41:17,335 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 11315 to 6103.
[2023-12-25 22:41:17,341 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 6103 states, 6102 states have (on average 1.665847263192396) internal successors, (10165), 6102 states have internal predecessors, (10165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:41:17,346 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 6103 states to 6103 states and 10165 transitions.
[2023-12-25 22:41:17,346 INFO  L78                 Accepts]: Start accepts. Automaton has 6103 states and 10165 transitions. Word has length 3978
[2023-12-25 22:41:17,348 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 22:41:17,349 INFO  L495      AbstractCegarLoop]: Abstraction has 6103 states and 10165 transitions.
[2023-12-25 22:41:17,349 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 711.8) internal successors, (3559), 5 states have internal predecessors, (3559), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:41:17,350 INFO  L276                IsEmpty]: Start isEmpty. Operand 6103 states and 10165 transitions.
[2023-12-25 22:41:17,431 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 3980
[2023-12-25 22:41:17,431 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 22:41:17,432 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 22:41:17,479 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0
[2023-12-25 22:41:17,633 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 22:41:17,633 INFO  L420      AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 22:41:17,633 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 22:41:17,634 INFO  L85        PathProgramCache]: Analyzing trace with hash -1588687399, now seen corresponding path program 1 times
[2023-12-25 22:41:17,634 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 22:41:17,635 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [252603087]
[2023-12-25 22:41:17,635 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:41:17,635 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 22:41:17,883 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 22:41:17,883 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1899420629]
[2023-12-25 22:41:17,884 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:41:17,884 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 22:41:17,884 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 22:41:17,886 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 22:41:17,887 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 22:41:21,968 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 22:41:22,087 INFO  L262         TraceCheckSpWp]: Trace formula consists of 17684 conjuncts, 17 conjunts are in the unsatisfiable core
[2023-12-25 22:41:22,134 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 22:41:22,645 INFO  L134       CoverageAnalysis]: Checked inductivity of 448 backedges. 28 proven. 420 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-25 22:41:22,645 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-12-25 22:41:22,747 INFO  L134       CoverageAnalysis]: Checked inductivity of 448 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 418 trivial. 0 not checked.
[2023-12-25 22:41:22,747 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 22:41:22,748 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [252603087]
[2023-12-25 22:41:22,748 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 22:41:22,748 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1899420629]
[2023-12-25 22:41:22,748 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1899420629] provided 1 perfect and 1 imperfect interpolant sequences
[2023-12-25 22:41:22,748 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2023-12-25 22:41:22,748 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10
[2023-12-25 22:41:22,749 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [760890503]
[2023-12-25 22:41:22,749 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 22:41:22,751 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-12-25 22:41:22,752 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 22:41:22,754 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-12-25 22:41:22,754 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90
[2023-12-25 22:41:22,754 INFO  L87              Difference]: Start difference. First operand 6103 states and 10165 transitions. Second operand  has 5 states, 5 states have (on average 712.4) internal successors, (3562), 5 states have internal predecessors, (3562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:41:28,732 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 22:41:28,733 INFO  L93              Difference]: Finished difference Result 21398 states and 35491 transitions.
[2023-12-25 22:41:28,733 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2023-12-25 22:41:28,734 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 712.4) internal successors, (3562), 5 states have internal predecessors, (3562), 0 states have call successors, (0), 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 3979
[2023-12-25 22:41:28,737 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 22:41:28,747 INFO  L225             Difference]: With dead ends: 21398
[2023-12-25 22:41:28,747 INFO  L226             Difference]: Without dead ends: 11316
[2023-12-25 22:41:28,754 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 7957 GetRequests, 7948 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 22:41:28,755 INFO  L413           NwaCegarLoop]: 15119 mSDtfsCounter, 15988 mSDsluCounter, 22031 mSDsCounter, 0 mSdLazyCounter, 9419 mSolverCounterSat, 453 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15988 SdHoareTripleChecker+Valid, 37150 SdHoareTripleChecker+Invalid, 9872 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 453 IncrementalHoareTripleChecker+Valid, 9419 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.7s IncrementalHoareTripleChecker+Time
[2023-12-25 22:41:28,755 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [15988 Valid, 37150 Invalid, 9872 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [453 Valid, 9419 Invalid, 0 Unknown, 0 Unchecked, 5.7s Time]
[2023-12-25 22:41:28,762 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 11316 states.
[2023-12-25 22:41:28,832 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 11316 to 6105.
[2023-12-25 22:41:28,839 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 6105 states, 6104 states have (on average 1.6656290956749673) internal successors, (10167), 6104 states have internal predecessors, (10167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:41:28,846 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 6105 states to 6105 states and 10167 transitions.
[2023-12-25 22:41:28,846 INFO  L78                 Accepts]: Start accepts. Automaton has 6105 states and 10167 transitions. Word has length 3979
[2023-12-25 22:41:28,849 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 22:41:28,850 INFO  L495      AbstractCegarLoop]: Abstraction has 6105 states and 10167 transitions.
[2023-12-25 22:41:28,851 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 712.4) internal successors, (3562), 5 states have internal predecessors, (3562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:41:28,851 INFO  L276                IsEmpty]: Start isEmpty. Operand 6105 states and 10167 transitions.
[2023-12-25 22:41:28,937 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 3981
[2023-12-25 22:41:28,937 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 22:41:28,938 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 22:41:28,992 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0
[2023-12-25 22:41:29,139 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 22:41:29,140 INFO  L420      AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 22:41:29,140 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 22:41:29,141 INFO  L85        PathProgramCache]: Analyzing trace with hash 777655363, now seen corresponding path program 1 times
[2023-12-25 22:41:29,141 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 22:41:29,141 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [292185421]
[2023-12-25 22:41:29,142 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:41:29,142 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 22:41:29,494 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 22:41:29,495 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [577349374]
[2023-12-25 22:41:29,496 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:41:29,496 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 22:41:29,496 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 22:41:29,497 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 22:41:29,513 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 22:41:33,386 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 22:41:33,487 INFO  L262         TraceCheckSpWp]: Trace formula consists of 17687 conjuncts, 17 conjunts are in the unsatisfiable core
[2023-12-25 22:41:33,527 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 22:41:34,035 INFO  L134       CoverageAnalysis]: Checked inductivity of 448 backedges. 30 proven. 418 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-25 22:41:34,035 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-12-25 22:41:34,158 INFO  L134       CoverageAnalysis]: Checked inductivity of 448 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 416 trivial. 0 not checked.
[2023-12-25 22:41:34,158 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 22:41:34,158 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [292185421]
[2023-12-25 22:41:34,158 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 22:41:34,159 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [577349374]
[2023-12-25 22:41:34,159 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [577349374] provided 1 perfect and 1 imperfect interpolant sequences
[2023-12-25 22:41:34,159 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2023-12-25 22:41:34,160 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10
[2023-12-25 22:41:34,160 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [498512008]
[2023-12-25 22:41:34,160 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 22:41:34,163 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-12-25 22:41:34,163 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 22:41:34,166 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-12-25 22:41:34,166 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90
[2023-12-25 22:41:34,166 INFO  L87              Difference]: Start difference. First operand 6105 states and 10167 transitions. Second operand  has 5 states, 5 states have (on average 713.0) internal successors, (3565), 5 states have internal predecessors, (3565), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:41:40,131 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 22:41:40,131 INFO  L93              Difference]: Finished difference Result 21406 states and 35499 transitions.
[2023-12-25 22:41:40,131 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2023-12-25 22:41:40,132 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 713.0) internal successors, (3565), 5 states have internal predecessors, (3565), 0 states have call successors, (0), 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 3980
[2023-12-25 22:41:40,135 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 22:41:40,145 INFO  L225             Difference]: With dead ends: 21406
[2023-12-25 22:41:40,145 INFO  L226             Difference]: Without dead ends: 11317
[2023-12-25 22:41:40,152 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 7959 GetRequests, 7950 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 22:41:40,153 INFO  L413           NwaCegarLoop]: 15111 mSDtfsCounter, 15982 mSDsluCounter, 22021 mSDsCounter, 0 mSdLazyCounter, 9419 mSolverCounterSat, 453 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15982 SdHoareTripleChecker+Valid, 37132 SdHoareTripleChecker+Invalid, 9872 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 453 IncrementalHoareTripleChecker+Valid, 9419 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.7s IncrementalHoareTripleChecker+Time
[2023-12-25 22:41:40,153 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [15982 Valid, 37132 Invalid, 9872 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [453 Valid, 9419 Invalid, 0 Unknown, 0 Unchecked, 5.7s Time]
[2023-12-25 22:41:40,161 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 11317 states.
[2023-12-25 22:41:40,225 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 11317 to 6107.
[2023-12-25 22:41:40,231 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 6107 states, 6106 states have (on average 1.6654110710776286) internal successors, (10169), 6106 states have internal predecessors, (10169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:41:40,237 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 6107 states to 6107 states and 10169 transitions.
[2023-12-25 22:41:40,237 INFO  L78                 Accepts]: Start accepts. Automaton has 6107 states and 10169 transitions. Word has length 3980
[2023-12-25 22:41:40,240 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 22:41:40,240 INFO  L495      AbstractCegarLoop]: Abstraction has 6107 states and 10169 transitions.
[2023-12-25 22:41:40,241 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 713.0) internal successors, (3565), 5 states have internal predecessors, (3565), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:41:40,241 INFO  L276                IsEmpty]: Start isEmpty. Operand 6107 states and 10169 transitions.
[2023-12-25 22:41:40,335 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 3982
[2023-12-25 22:41:40,335 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 22:41:40,337 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 22:41:40,388 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 22:41:40,537 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 22:41:40,537 INFO  L420      AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 22:41:40,538 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 22:41:40,539 INFO  L85        PathProgramCache]: Analyzing trace with hash -1163425099, now seen corresponding path program 1 times
[2023-12-25 22:41:40,539 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 22:41:40,539 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1655252030]
[2023-12-25 22:41:40,539 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:41:40,539 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 22:41:40,785 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 22:41:40,785 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1773090303]
[2023-12-25 22:41:40,786 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:41:40,786 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 22:41:40,786 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 22:41:40,787 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 22:41:40,804 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 22:41:44,814 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 22:41:44,910 INFO  L262         TraceCheckSpWp]: Trace formula consists of 17691 conjuncts, 17 conjunts are in the unsatisfiable core
[2023-12-25 22:41:44,950 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 22:41:45,465 INFO  L134       CoverageAnalysis]: Checked inductivity of 448 backedges. 32 proven. 416 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-25 22:41:45,466 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-12-25 22:41:45,570 INFO  L134       CoverageAnalysis]: Checked inductivity of 448 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 414 trivial. 0 not checked.
[2023-12-25 22:41:45,570 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 22:41:45,570 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1655252030]
[2023-12-25 22:41:45,570 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 22:41:45,570 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1773090303]
[2023-12-25 22:41:45,571 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1773090303] provided 1 perfect and 1 imperfect interpolant sequences
[2023-12-25 22:41:45,571 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2023-12-25 22:41:45,571 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10
[2023-12-25 22:41:45,571 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1462788701]
[2023-12-25 22:41:45,572 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 22:41:45,574 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-12-25 22:41:45,574 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 22:41:45,576 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-12-25 22:41:45,576 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90
[2023-12-25 22:41:45,576 INFO  L87              Difference]: Start difference. First operand 6107 states and 10169 transitions. Second operand  has 5 states, 5 states have (on average 713.6) internal successors, (3568), 5 states have internal predecessors, (3568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:41:50,728 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 22:41:50,728 INFO  L93              Difference]: Finished difference Result 21414 states and 35507 transitions.
[2023-12-25 22:41:50,728 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2023-12-25 22:41:50,729 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 713.6) internal successors, (3568), 5 states have internal predecessors, (3568), 0 states have call successors, (0), 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 3981
[2023-12-25 22:41:50,732 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 22:41:50,741 INFO  L225             Difference]: With dead ends: 21414
[2023-12-25 22:41:50,741 INFO  L226             Difference]: Without dead ends: 11318
[2023-12-25 22:41:50,749 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 7961 GetRequests, 7952 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 22:41:50,749 INFO  L413           NwaCegarLoop]: 15103 mSDtfsCounter, 23299 mSDsluCounter, 14519 mSDsCounter, 0 mSdLazyCounter, 6847 mSolverCounterSat, 453 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23299 SdHoareTripleChecker+Valid, 29622 SdHoareTripleChecker+Invalid, 7300 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 453 IncrementalHoareTripleChecker+Valid, 6847 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time
[2023-12-25 22:41:50,749 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [23299 Valid, 29622 Invalid, 7300 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [453 Valid, 6847 Invalid, 0 Unknown, 0 Unchecked, 4.9s Time]
[2023-12-25 22:41:50,758 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 11318 states.
[2023-12-25 22:41:50,825 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 11318 to 6109.
[2023-12-25 22:41:50,831 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 6109 states, 6108 states have (on average 1.665193189259987) internal successors, (10171), 6108 states have internal predecessors, (10171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:41:50,837 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 6109 states to 6109 states and 10171 transitions.
[2023-12-25 22:41:50,838 INFO  L78                 Accepts]: Start accepts. Automaton has 6109 states and 10171 transitions. Word has length 3981
[2023-12-25 22:41:50,841 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 22:41:50,841 INFO  L495      AbstractCegarLoop]: Abstraction has 6109 states and 10171 transitions.
[2023-12-25 22:41:50,842 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 713.6) internal successors, (3568), 5 states have internal predecessors, (3568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:41:50,842 INFO  L276                IsEmpty]: Start isEmpty. Operand 6109 states and 10171 transitions.
[2023-12-25 22:41:51,115 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 3983
[2023-12-25 22:41:51,115 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 22:41:51,116 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 22:41:51,167 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0
[2023-12-25 22:41:51,317 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 22:41:51,317 INFO  L420      AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 22:41:51,318 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 22:41:51,319 INFO  L85        PathProgramCache]: Analyzing trace with hash 767605867, now seen corresponding path program 1 times
[2023-12-25 22:41:51,319 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 22:41:51,319 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1606390061]
[2023-12-25 22:41:51,319 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:41:51,319 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 22:41:51,574 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 22:41:51,574 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1154330230]
[2023-12-25 22:41:51,575 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:41:51,575 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 22:41:51,575 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 22:41:51,576 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 22:41:51,577 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 22:41:55,439 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 22:41:55,539 INFO  L262         TraceCheckSpWp]: Trace formula consists of 17694 conjuncts, 17 conjunts are in the unsatisfiable core
[2023-12-25 22:41:55,576 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 22:41:56,083 INFO  L134       CoverageAnalysis]: Checked inductivity of 448 backedges. 34 proven. 414 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-25 22:41:56,083 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-12-25 22:41:56,189 INFO  L134       CoverageAnalysis]: Checked inductivity of 448 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 412 trivial. 0 not checked.
[2023-12-25 22:41:56,190 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 22:41:56,190 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1606390061]
[2023-12-25 22:41:56,190 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 22:41:56,190 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1154330230]
[2023-12-25 22:41:56,190 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1154330230] provided 1 perfect and 1 imperfect interpolant sequences
[2023-12-25 22:41:56,190 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2023-12-25 22:41:56,191 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10
[2023-12-25 22:41:56,191 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [131089240]
[2023-12-25 22:41:56,191 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 22:41:56,193 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-12-25 22:41:56,193 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 22:41:56,196 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-12-25 22:41:56,196 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90
[2023-12-25 22:41:56,196 INFO  L87              Difference]: Start difference. First operand 6109 states and 10171 transitions. Second operand  has 5 states, 5 states have (on average 714.2) internal successors, (3571), 5 states have internal predecessors, (3571), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:42:01,951 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 22:42:01,951 INFO  L93              Difference]: Finished difference Result 21422 states and 35515 transitions.
[2023-12-25 22:42:01,951 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2023-12-25 22:42:01,952 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 714.2) internal successors, (3571), 5 states have internal predecessors, (3571), 0 states have call successors, (0), 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 3982
[2023-12-25 22:42:01,955 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 22:42:01,965 INFO  L225             Difference]: With dead ends: 21422
[2023-12-25 22:42:01,965 INFO  L226             Difference]: Without dead ends: 11319
[2023-12-25 22:42:01,972 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 7963 GetRequests, 7954 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 22:42:01,973 INFO  L413           NwaCegarLoop]: 15095 mSDtfsCounter, 15986 mSDsluCounter, 21363 mSDsCounter, 0 mSdLazyCounter, 8663 mSolverCounterSat, 453 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15986 SdHoareTripleChecker+Valid, 36458 SdHoareTripleChecker+Invalid, 9116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 453 IncrementalHoareTripleChecker+Valid, 8663 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.5s IncrementalHoareTripleChecker+Time
[2023-12-25 22:42:01,973 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [15986 Valid, 36458 Invalid, 9116 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [453 Valid, 8663 Invalid, 0 Unknown, 0 Unchecked, 5.5s Time]
[2023-12-25 22:42:01,980 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 11319 states.
[2023-12-25 22:42:02,045 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 11319 to 6111.
[2023-12-25 22:42:02,049 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 6111 states, 6110 states have (on average 1.664975450081833) internal successors, (10173), 6110 states have internal predecessors, (10173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:42:02,053 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 6111 states to 6111 states and 10173 transitions.
[2023-12-25 22:42:02,053 INFO  L78                 Accepts]: Start accepts. Automaton has 6111 states and 10173 transitions. Word has length 3982
[2023-12-25 22:42:02,055 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 22:42:02,055 INFO  L495      AbstractCegarLoop]: Abstraction has 6111 states and 10173 transitions.
[2023-12-25 22:42:02,056 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 714.2) internal successors, (3571), 5 states have internal predecessors, (3571), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:42:02,056 INFO  L276                IsEmpty]: Start isEmpty. Operand 6111 states and 10173 transitions.
[2023-12-25 22:42:02,139 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 3984
[2023-12-25 22:42:02,139 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 22:42:02,140 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 22:42:02,188 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 22:42:02,340 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 22:42:02,341 INFO  L420      AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 22:42:02,341 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 22:42:02,342 INFO  L85        PathProgramCache]: Analyzing trace with hash 909779343, now seen corresponding path program 1 times
[2023-12-25 22:42:02,342 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 22:42:02,342 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [304389769]
[2023-12-25 22:42:02,342 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:42:02,342 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 22:42:02,571 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 22:42:02,571 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1736053810]
[2023-12-25 22:42:02,572 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:42:02,572 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 22:42:02,572 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 22:42:02,573 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 22:42:02,575 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 22:42:06,555 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 22:42:06,657 INFO  L262         TraceCheckSpWp]: Trace formula consists of 17697 conjuncts, 17 conjunts are in the unsatisfiable core
[2023-12-25 22:42:06,694 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 22:42:07,199 INFO  L134       CoverageAnalysis]: Checked inductivity of 448 backedges. 36 proven. 412 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-25 22:42:07,199 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-12-25 22:42:07,309 INFO  L134       CoverageAnalysis]: Checked inductivity of 448 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 410 trivial. 0 not checked.
[2023-12-25 22:42:07,309 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 22:42:07,309 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [304389769]
[2023-12-25 22:42:07,310 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 22:42:07,310 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1736053810]
[2023-12-25 22:42:07,310 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1736053810] provided 1 perfect and 1 imperfect interpolant sequences
[2023-12-25 22:42:07,310 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2023-12-25 22:42:07,310 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10
[2023-12-25 22:42:07,310 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1559164087]
[2023-12-25 22:42:07,311 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 22:42:07,312 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-12-25 22:42:07,312 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 22:42:07,315 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-12-25 22:42:07,315 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90
[2023-12-25 22:42:07,315 INFO  L87              Difference]: Start difference. First operand 6111 states and 10173 transitions. Second operand  has 5 states, 5 states have (on average 714.8) internal successors, (3574), 5 states have internal predecessors, (3574), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:42:13,295 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 22:42:13,295 INFO  L93              Difference]: Finished difference Result 21430 states and 35523 transitions.
[2023-12-25 22:42:13,296 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2023-12-25 22:42:13,297 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 714.8) internal successors, (3574), 5 states have internal predecessors, (3574), 0 states have call successors, (0), 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 3983
[2023-12-25 22:42:13,300 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 22:42:13,311 INFO  L225             Difference]: With dead ends: 21430
[2023-12-25 22:42:13,311 INFO  L226             Difference]: Without dead ends: 11320
[2023-12-25 22:42:13,319 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 7965 GetRequests, 7956 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 22:42:13,320 INFO  L413           NwaCegarLoop]: 15087 mSDtfsCounter, 15964 mSDsluCounter, 21991 mSDsCounter, 0 mSdLazyCounter, 9419 mSolverCounterSat, 453 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15964 SdHoareTripleChecker+Valid, 37078 SdHoareTripleChecker+Invalid, 9872 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 453 IncrementalHoareTripleChecker+Valid, 9419 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.7s IncrementalHoareTripleChecker+Time
[2023-12-25 22:42:13,320 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [15964 Valid, 37078 Invalid, 9872 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [453 Valid, 9419 Invalid, 0 Unknown, 0 Unchecked, 5.7s Time]
[2023-12-25 22:42:13,328 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 11320 states.
[2023-12-25 22:42:13,406 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 11320 to 6113.
[2023-12-25 22:42:13,412 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 6113 states, 6112 states have (on average 1.6647578534031413) internal successors, (10175), 6112 states have internal predecessors, (10175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:42:13,418 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 6113 states to 6113 states and 10175 transitions.
[2023-12-25 22:42:13,419 INFO  L78                 Accepts]: Start accepts. Automaton has 6113 states and 10175 transitions. Word has length 3983
[2023-12-25 22:42:13,421 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 22:42:13,421 INFO  L495      AbstractCegarLoop]: Abstraction has 6113 states and 10175 transitions.
[2023-12-25 22:42:13,422 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 714.8) internal successors, (3574), 5 states have internal predecessors, (3574), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:42:13,422 INFO  L276                IsEmpty]: Start isEmpty. Operand 6113 states and 10175 transitions.
[2023-12-25 22:42:13,624 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 3985
[2023-12-25 22:42:13,624 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 22:42:13,628 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 22:42:13,688 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 22:42:13,848 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 22:42:13,848 INFO  L420      AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 22:42:13,849 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 22:42:13,850 INFO  L85        PathProgramCache]: Analyzing trace with hash 1756418705, now seen corresponding path program 1 times
[2023-12-25 22:42:13,850 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 22:42:13,850 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [247997829]
[2023-12-25 22:42:13,851 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:42:13,851 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 22:42:14,100 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 22:42:14,101 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [556487430]
[2023-12-25 22:42:14,101 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:42:14,102 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 22:42:14,102 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 22:42:14,103 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 22:42:14,106 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 22:42:17,988 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 22:42:18,091 INFO  L262         TraceCheckSpWp]: Trace formula consists of 17700 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-12-25 22:42:18,132 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 22:42:18,645 INFO  L134       CoverageAnalysis]: Checked inductivity of 448 backedges. 38 proven. 410 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-25 22:42:18,645 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-12-25 22:42:18,840 INFO  L134       CoverageAnalysis]: Checked inductivity of 448 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 408 trivial. 0 not checked.
[2023-12-25 22:42:18,840 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 22:42:18,840 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [247997829]
[2023-12-25 22:42:18,840 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 22:42:18,840 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [556487430]
[2023-12-25 22:42:18,840 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [556487430] provided 1 perfect and 1 imperfect interpolant sequences
[2023-12-25 22:42:18,840 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2023-12-25 22:42:18,841 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8] total 12
[2023-12-25 22:42:18,841 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [587305622]
[2023-12-25 22:42:18,842 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 22:42:18,844 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2023-12-25 22:42:18,844 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 22:42:18,847 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2023-12-25 22:42:18,847 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132
[2023-12-25 22:42:18,847 INFO  L87              Difference]: Start difference. First operand 6113 states and 10175 transitions. Second operand  has 6 states, 6 states have (on average 596.1666666666666) internal successors, (3577), 6 states have internal predecessors, (3577), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:42:28,987 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 22:42:28,988 INFO  L93              Difference]: Finished difference Result 26746 states and 44365 transitions.
[2023-12-25 22:42:28,988 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. 
[2023-12-25 22:42:28,989 INFO  L78                 Accepts]: Start accepts. Automaton has  has 6 states, 6 states have (on average 596.1666666666666) internal successors, (3577), 6 states have internal predecessors, (3577), 0 states have call successors, (0), 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 3984
[2023-12-25 22:42:28,992 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 22:42:29,008 INFO  L225             Difference]: With dead ends: 26746
[2023-12-25 22:42:29,008 INFO  L226             Difference]: Without dead ends: 16629
[2023-12-25 22:42:29,018 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 7968 GetRequests, 7956 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182
[2023-12-25 22:42:29,018 INFO  L413           NwaCegarLoop]: 15081 mSDtfsCounter, 31971 mSDsluCounter, 42667 mSDsCounter, 0 mSdLazyCounter, 16236 mSolverCounterSat, 455 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31971 SdHoareTripleChecker+Valid, 57748 SdHoareTripleChecker+Invalid, 16691 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 455 IncrementalHoareTripleChecker+Valid, 16236 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.6s IncrementalHoareTripleChecker+Time
[2023-12-25 22:42:29,018 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [31971 Valid, 57748 Invalid, 16691 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [455 Valid, 16236 Invalid, 0 Unknown, 0 Unchecked, 9.6s Time]
[2023-12-25 22:42:29,028 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 16629 states.
[2023-12-25 22:42:29,119 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 16629 to 6115.
[2023-12-25 22:42:29,125 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 6115 states, 6114 states have (on average 1.6645403990840693) internal successors, (10177), 6114 states have internal predecessors, (10177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:42:29,131 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 6115 states to 6115 states and 10177 transitions.
[2023-12-25 22:42:29,132 INFO  L78                 Accepts]: Start accepts. Automaton has 6115 states and 10177 transitions. Word has length 3984
[2023-12-25 22:42:29,134 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 22:42:29,134 INFO  L495      AbstractCegarLoop]: Abstraction has 6115 states and 10177 transitions.
[2023-12-25 22:42:29,135 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 6 states, 6 states have (on average 596.1666666666666) internal successors, (3577), 6 states have internal predecessors, (3577), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:42:29,135 INFO  L276                IsEmpty]: Start isEmpty. Operand 6115 states and 10177 transitions.
[2023-12-25 22:42:29,354 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 3986
[2023-12-25 22:42:29,354 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 22:42:29,356 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 22:42:29,413 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0
[2023-12-25 22:42:29,572 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 22:42:29,572 INFO  L420      AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 22:42:29,574 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 22:42:29,574 INFO  L85        PathProgramCache]: Analyzing trace with hash -956176533, now seen corresponding path program 1 times
[2023-12-25 22:42:29,574 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 22:42:29,574 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1032316373]
[2023-12-25 22:42:29,575 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:42:29,575 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 22:42:29,863 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 22:42:29,864 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1058749427]
[2023-12-25 22:42:29,864 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:42:29,864 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 22:42:29,865 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 22:42:29,865 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 22:42:29,866 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 22:42:33,751 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 22:42:33,851 INFO  L262         TraceCheckSpWp]: Trace formula consists of 17704 conjuncts, 17 conjunts are in the unsatisfiable core
[2023-12-25 22:42:33,887 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 22:42:34,442 INFO  L134       CoverageAnalysis]: Checked inductivity of 448 backedges. 40 proven. 408 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-25 22:42:34,442 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-12-25 22:42:34,552 INFO  L134       CoverageAnalysis]: Checked inductivity of 448 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 406 trivial. 0 not checked.
[2023-12-25 22:42:34,553 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 22:42:34,553 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1032316373]
[2023-12-25 22:42:34,553 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 22:42:34,553 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1058749427]
[2023-12-25 22:42:34,553 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1058749427] provided 1 perfect and 1 imperfect interpolant sequences
[2023-12-25 22:42:34,553 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2023-12-25 22:42:34,554 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10
[2023-12-25 22:42:34,554 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1854576564]
[2023-12-25 22:42:34,554 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 22:42:34,555 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-12-25 22:42:34,556 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 22:42:34,557 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-12-25 22:42:34,557 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90
[2023-12-25 22:42:34,557 INFO  L87              Difference]: Start difference. First operand 6115 states and 10177 transitions. Second operand  has 5 states, 5 states have (on average 716.0) internal successors, (3580), 5 states have internal predecessors, (3580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:42:40,320 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 22:42:40,320 INFO  L93              Difference]: Finished difference Result 21446 states and 35539 transitions.
[2023-12-25 22:42:40,320 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2023-12-25 22:42:40,321 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 716.0) internal successors, (3580), 5 states have internal predecessors, (3580), 0 states have call successors, (0), 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 3985
[2023-12-25 22:42:40,324 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 22:42:40,333 INFO  L225             Difference]: With dead ends: 21446
[2023-12-25 22:42:40,334 INFO  L226             Difference]: Without dead ends: 11322
[2023-12-25 22:42:40,341 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 7969 GetRequests, 7960 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 22:42:40,341 INFO  L413           NwaCegarLoop]: 15071 mSDtfsCounter, 15971 mSDsluCounter, 21339 mSDsCounter, 0 mSdLazyCounter, 8663 mSolverCounterSat, 453 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15971 SdHoareTripleChecker+Valid, 36410 SdHoareTripleChecker+Invalid, 9116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 453 IncrementalHoareTripleChecker+Valid, 8663 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.5s IncrementalHoareTripleChecker+Time
[2023-12-25 22:42:40,342 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [15971 Valid, 36410 Invalid, 9116 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [453 Valid, 8663 Invalid, 0 Unknown, 0 Unchecked, 5.5s Time]
[2023-12-25 22:42:40,349 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 11322 states.
[2023-12-25 22:42:40,411 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 11322 to 6117.
[2023-12-25 22:42:40,416 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 6117 states, 6116 states have (on average 1.6643230869849575) internal successors, (10179), 6116 states have internal predecessors, (10179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:42:40,422 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 6117 states to 6117 states and 10179 transitions.
[2023-12-25 22:42:40,422 INFO  L78                 Accepts]: Start accepts. Automaton has 6117 states and 10179 transitions. Word has length 3985
[2023-12-25 22:42:40,425 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 22:42:40,425 INFO  L495      AbstractCegarLoop]: Abstraction has 6117 states and 10179 transitions.
[2023-12-25 22:42:40,426 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 716.0) internal successors, (3580), 5 states have internal predecessors, (3580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:42:40,426 INFO  L276                IsEmpty]: Start isEmpty. Operand 6117 states and 10179 transitions.
[2023-12-25 22:42:40,521 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 3987
[2023-12-25 22:42:40,521 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 22:42:40,522 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 22:42:40,577 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0
[2023-12-25 22:42:40,748 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 22:42:40,748 INFO  L420      AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 22:42:40,749 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 22:42:40,749 INFO  L85        PathProgramCache]: Analyzing trace with hash 88845241, now seen corresponding path program 1 times
[2023-12-25 22:42:40,749 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 22:42:40,749 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2046159752]
[2023-12-25 22:42:40,750 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:42:40,750 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 22:42:40,990 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 22:42:40,990 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [262144987]
[2023-12-25 22:42:40,991 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:42:40,991 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 22:42:40,992 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 22:42:40,993 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 22:42:40,995 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 22:42:45,054 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 22:42:45,150 INFO  L262         TraceCheckSpWp]: Trace formula consists of 17707 conjuncts, 17 conjunts are in the unsatisfiable core
[2023-12-25 22:42:45,183 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 22:42:45,697 INFO  L134       CoverageAnalysis]: Checked inductivity of 448 backedges. 42 proven. 406 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-25 22:42:45,697 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-12-25 22:42:45,815 INFO  L134       CoverageAnalysis]: Checked inductivity of 448 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 402 trivial. 0 not checked.
[2023-12-25 22:42:45,816 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 22:42:45,816 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2046159752]
[2023-12-25 22:42:45,816 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 22:42:45,816 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [262144987]
[2023-12-25 22:42:45,816 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [262144987] provided 1 perfect and 1 imperfect interpolant sequences
[2023-12-25 22:42:45,816 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2023-12-25 22:42:45,817 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10
[2023-12-25 22:42:45,817 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [630999184]
[2023-12-25 22:42:45,817 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 22:42:45,818 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-12-25 22:42:45,819 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 22:42:45,820 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-12-25 22:42:45,820 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90
[2023-12-25 22:42:45,821 INFO  L87              Difference]: Start difference. First operand 6117 states and 10179 transitions. Second operand  has 5 states, 5 states have (on average 717.0) internal successors, (3585), 5 states have internal predecessors, (3585), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:42:50,956 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 22:42:50,956 INFO  L93              Difference]: Finished difference Result 21457 states and 35552 transitions.
[2023-12-25 22:42:50,956 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2023-12-25 22:42:50,957 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 717.0) internal successors, (3585), 5 states have internal predecessors, (3585), 0 states have call successors, (0), 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 3986
[2023-12-25 22:42:50,960 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 22:42:50,969 INFO  L225             Difference]: With dead ends: 21457
[2023-12-25 22:42:50,969 INFO  L226             Difference]: Without dead ends: 11326
[2023-12-25 22:42:50,977 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 7971 GetRequests, 7962 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 22:42:50,977 INFO  L413           NwaCegarLoop]: 15058 mSDtfsCounter, 23257 mSDsluCounter, 14493 mSDsCounter, 0 mSdLazyCounter, 6843 mSolverCounterSat, 453 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23257 SdHoareTripleChecker+Valid, 29551 SdHoareTripleChecker+Invalid, 7296 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 453 IncrementalHoareTripleChecker+Valid, 6843 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time
[2023-12-25 22:42:50,977 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [23257 Valid, 29551 Invalid, 7296 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [453 Valid, 6843 Invalid, 0 Unknown, 0 Unchecked, 4.9s Time]
[2023-12-25 22:42:50,985 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 11326 states.
[2023-12-25 22:42:51,046 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 11326 to 6122.
[2023-12-25 22:42:51,052 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 6122 states, 6121 states have (on average 1.664107172030714) internal successors, (10186), 6121 states have internal predecessors, (10186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:42:51,059 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 6122 states to 6122 states and 10186 transitions.
[2023-12-25 22:42:51,059 INFO  L78                 Accepts]: Start accepts. Automaton has 6122 states and 10186 transitions. Word has length 3986
[2023-12-25 22:42:51,062 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 22:42:51,062 INFO  L495      AbstractCegarLoop]: Abstraction has 6122 states and 10186 transitions.
[2023-12-25 22:42:51,063 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 717.0) internal successors, (3585), 5 states have internal predecessors, (3585), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:42:51,063 INFO  L276                IsEmpty]: Start isEmpty. Operand 6122 states and 10186 transitions.
[2023-12-25 22:42:51,151 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 3988
[2023-12-25 22:42:51,151 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 22:42:51,152 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 22:42:51,199 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 22:42:51,352 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 22:42:51,353 INFO  L420      AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 22:42:51,353 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 22:42:51,354 INFO  L85        PathProgramCache]: Analyzing trace with hash 368223455, now seen corresponding path program 1 times
[2023-12-25 22:42:51,354 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 22:42:51,354 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [202528495]
[2023-12-25 22:42:51,355 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:42:51,355 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 22:42:51,652 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 22:42:51,652 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1736313123]
[2023-12-25 22:42:51,653 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:42:51,653 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 22:42:51,653 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 22:42:51,654 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 22:42:51,656 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 22:42:55,658 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 22:42:55,754 INFO  L262         TraceCheckSpWp]: Trace formula consists of 17710 conjuncts, 17 conjunts are in the unsatisfiable core
[2023-12-25 22:42:55,787 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 22:42:56,296 INFO  L134       CoverageAnalysis]: Checked inductivity of 448 backedges. 46 proven. 402 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-25 22:42:56,297 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-12-25 22:42:56,418 INFO  L134       CoverageAnalysis]: Checked inductivity of 448 backedges. 50 proven. 0 refuted. 0 times theorem prover too weak. 398 trivial. 0 not checked.
[2023-12-25 22:42:56,419 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 22:42:56,419 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [202528495]
[2023-12-25 22:42:56,419 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 22:42:56,419 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1736313123]
[2023-12-25 22:42:56,419 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1736313123] provided 1 perfect and 1 imperfect interpolant sequences
[2023-12-25 22:42:56,419 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2023-12-25 22:42:56,420 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10
[2023-12-25 22:42:56,420 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1630617344]
[2023-12-25 22:42:56,420 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 22:42:56,422 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-12-25 22:42:56,422 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 22:42:56,424 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-12-25 22:42:56,424 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90
[2023-12-25 22:42:56,424 INFO  L87              Difference]: Start difference. First operand 6122 states and 10186 transitions. Second operand  has 5 states, 5 states have (on average 718.0) internal successors, (3590), 5 states have internal predecessors, (3590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:43:01,728 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 22:43:01,728 INFO  L93              Difference]: Finished difference Result 21533 states and 35673 transitions.
[2023-12-25 22:43:01,728 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2023-12-25 22:43:01,729 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 718.0) internal successors, (3590), 5 states have internal predecessors, (3590), 0 states have call successors, (0), 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 3987
[2023-12-25 22:43:01,731 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 22:43:01,738 INFO  L225             Difference]: With dead ends: 21533
[2023-12-25 22:43:01,738 INFO  L226             Difference]: Without dead ends: 11330
[2023-12-25 22:43:01,741 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 7973 GetRequests, 7964 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 22:43:01,741 INFO  L413           NwaCegarLoop]: 15045 mSDtfsCounter, 23245 mSDsluCounter, 14487 mSDsCounter, 0 mSdLazyCounter, 6839 mSolverCounterSat, 453 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23245 SdHoareTripleChecker+Valid, 29532 SdHoareTripleChecker+Invalid, 7292 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 453 IncrementalHoareTripleChecker+Valid, 6839 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time
[2023-12-25 22:43:01,741 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [23245 Valid, 29532 Invalid, 7292 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [453 Valid, 6839 Invalid, 0 Unknown, 0 Unchecked, 5.0s Time]
[2023-12-25 22:43:01,747 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 11330 states.
[2023-12-25 22:43:01,791 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 11330 to 6127.
[2023-12-25 22:43:01,796 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 6127 states, 6126 states have (on average 1.6638916095331375) internal successors, (10193), 6126 states have internal predecessors, (10193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:43:01,800 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 6127 states to 6127 states and 10193 transitions.
[2023-12-25 22:43:01,800 INFO  L78                 Accepts]: Start accepts. Automaton has 6127 states and 10193 transitions. Word has length 3987
[2023-12-25 22:43:01,802 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 22:43:01,802 INFO  L495      AbstractCegarLoop]: Abstraction has 6127 states and 10193 transitions.
[2023-12-25 22:43:01,803 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 718.0) internal successors, (3590), 5 states have internal predecessors, (3590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:43:01,803 INFO  L276                IsEmpty]: Start isEmpty. Operand 6127 states and 10193 transitions.
[2023-12-25 22:43:01,883 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 3989
[2023-12-25 22:43:01,883 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 22:43:01,884 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 22:43:01,931 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 22:43:02,085 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 22:43:02,085 INFO  L420      AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 22:43:02,085 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 22:43:02,086 INFO  L85        PathProgramCache]: Analyzing trace with hash -1581068987, now seen corresponding path program 1 times
[2023-12-25 22:43:02,086 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 22:43:02,087 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [622916830]
[2023-12-25 22:43:02,087 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:43:02,087 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 22:43:02,313 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 22:43:02,313 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [290279117]
[2023-12-25 22:43:02,314 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:43:02,314 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 22:43:02,314 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 22:43:02,315 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 22:43:02,316 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 22:43:06,244 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 22:43:06,345 INFO  L262         TraceCheckSpWp]: Trace formula consists of 17713 conjuncts, 17 conjunts are in the unsatisfiable core
[2023-12-25 22:43:06,381 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 22:43:06,885 INFO  L134       CoverageAnalysis]: Checked inductivity of 448 backedges. 50 proven. 398 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-25 22:43:06,886 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-12-25 22:43:07,033 INFO  L134       CoverageAnalysis]: Checked inductivity of 448 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 394 trivial. 0 not checked.
[2023-12-25 22:43:07,033 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 22:43:07,034 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [622916830]
[2023-12-25 22:43:07,034 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 22:43:07,034 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [290279117]
[2023-12-25 22:43:07,034 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [290279117] provided 1 perfect and 1 imperfect interpolant sequences
[2023-12-25 22:43:07,034 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2023-12-25 22:43:07,035 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10
[2023-12-25 22:43:07,035 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [779075944]
[2023-12-25 22:43:07,035 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 22:43:07,038 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-12-25 22:43:07,038 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 22:43:07,040 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-12-25 22:43:07,040 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90
[2023-12-25 22:43:07,040 INFO  L87              Difference]: Start difference. First operand 6127 states and 10193 transitions. Second operand  has 5 states, 5 states have (on average 719.0) internal successors, (3595), 5 states have internal predecessors, (3595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:43:12,202 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 22:43:12,202 INFO  L93              Difference]: Finished difference Result 21557 states and 35707 transitions.
[2023-12-25 22:43:12,202 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2023-12-25 22:43:12,203 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 719.0) internal successors, (3595), 5 states have internal predecessors, (3595), 0 states have call successors, (0), 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 3988
[2023-12-25 22:43:12,206 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 22:43:12,215 INFO  L225             Difference]: With dead ends: 21557
[2023-12-25 22:43:12,215 INFO  L226             Difference]: Without dead ends: 11334
[2023-12-25 22:43:12,222 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 7975 GetRequests, 7966 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 22:43:12,223 INFO  L413           NwaCegarLoop]: 15032 mSDtfsCounter, 23233 mSDsluCounter, 14481 mSDsCounter, 0 mSdLazyCounter, 6835 mSolverCounterSat, 453 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23233 SdHoareTripleChecker+Valid, 29513 SdHoareTripleChecker+Invalid, 7288 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 453 IncrementalHoareTripleChecker+Valid, 6835 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time
[2023-12-25 22:43:12,223 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [23233 Valid, 29513 Invalid, 7288 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [453 Valid, 6835 Invalid, 0 Unknown, 0 Unchecked, 4.9s Time]
[2023-12-25 22:43:12,232 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 11334 states.
[2023-12-25 22:43:12,283 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 11334 to 6132.
[2023-12-25 22:43:12,287 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 6132 states, 6131 states have (on average 1.6636763986299135) internal successors, (10200), 6131 states have internal predecessors, (10200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:43:12,291 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 6132 states to 6132 states and 10200 transitions.
[2023-12-25 22:43:12,291 INFO  L78                 Accepts]: Start accepts. Automaton has 6132 states and 10200 transitions. Word has length 3988
[2023-12-25 22:43:12,293 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 22:43:12,293 INFO  L495      AbstractCegarLoop]: Abstraction has 6132 states and 10200 transitions.
[2023-12-25 22:43:12,294 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 719.0) internal successors, (3595), 5 states have internal predecessors, (3595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:43:12,294 INFO  L276                IsEmpty]: Start isEmpty. Operand 6132 states and 10200 transitions.
[2023-12-25 22:43:12,376 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 3990
[2023-12-25 22:43:12,377 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 22:43:12,378 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 22:43:12,428 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0
[2023-12-25 22:43:12,578 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 22:43:12,578 INFO  L420      AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 22:43:12,578 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 22:43:12,579 INFO  L85        PathProgramCache]: Analyzing trace with hash -1877355437, now seen corresponding path program 1 times
[2023-12-25 22:43:12,579 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 22:43:12,579 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [8091192]
[2023-12-25 22:43:12,580 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:43:12,580 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 22:43:12,802 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 22:43:12,802 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1568466141]
[2023-12-25 22:43:12,803 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:43:12,803 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 22:43:12,803 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 22:43:12,804 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 22:43:12,804 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 22:43:16,823 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 22:43:16,926 INFO  L262         TraceCheckSpWp]: Trace formula consists of 17716 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-12-25 22:43:16,965 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 22:43:17,478 INFO  L134       CoverageAnalysis]: Checked inductivity of 448 backedges. 54 proven. 394 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-25 22:43:17,478 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-12-25 22:43:17,639 INFO  L134       CoverageAnalysis]: Checked inductivity of 448 backedges. 58 proven. 0 refuted. 0 times theorem prover too weak. 390 trivial. 0 not checked.
[2023-12-25 22:43:17,639 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 22:43:17,639 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [8091192]
[2023-12-25 22:43:17,639 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 22:43:17,639 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1568466141]
[2023-12-25 22:43:17,639 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1568466141] provided 1 perfect and 1 imperfect interpolant sequences
[2023-12-25 22:43:17,639 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2023-12-25 22:43:17,640 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8] total 12
[2023-12-25 22:43:17,640 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [151914423]
[2023-12-25 22:43:17,640 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 22:43:17,642 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2023-12-25 22:43:17,642 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 22:43:17,644 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2023-12-25 22:43:17,644 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132
[2023-12-25 22:43:17,644 INFO  L87              Difference]: Start difference. First operand 6132 states and 10200 transitions. Second operand  has 6 states, 6 states have (on average 600.0) internal successors, (3600), 6 states have internal predecessors, (3600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:43:27,018 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 22:43:27,018 INFO  L93              Difference]: Finished difference Result 26928 states and 44632 transitions.
[2023-12-25 22:43:27,019 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. 
[2023-12-25 22:43:27,020 INFO  L78                 Accepts]: Start accepts. Automaton has  has 6 states, 6 states have (on average 600.0) internal successors, (3600), 6 states have internal predecessors, (3600), 0 states have call successors, (0), 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 3989
[2023-12-25 22:43:27,022 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 22:43:27,037 INFO  L225             Difference]: With dead ends: 26928
[2023-12-25 22:43:27,037 INFO  L226             Difference]: Without dead ends: 16685
[2023-12-25 22:43:27,047 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 7979 GetRequests, 7966 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210
[2023-12-25 22:43:27,048 INFO  L413           NwaCegarLoop]: 15022 mSDtfsCounter, 39211 mSDsluCounter, 35709 mSDsCounter, 0 mSdLazyCounter, 14379 mSolverCounterSat, 457 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39211 SdHoareTripleChecker+Valid, 50731 SdHoareTripleChecker+Invalid, 14836 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 457 IncrementalHoareTripleChecker+Valid, 14379 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.9s IncrementalHoareTripleChecker+Time
[2023-12-25 22:43:27,048 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [39211 Valid, 50731 Invalid, 14836 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [457 Valid, 14379 Invalid, 0 Unknown, 0 Unchecked, 8.9s Time]
[2023-12-25 22:43:27,058 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 16685 states.
[2023-12-25 22:43:27,118 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 16685 to 6137.
[2023-12-25 22:43:27,123 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 6137 states, 6136 states have (on average 1.6634615384615385) internal successors, (10207), 6136 states have internal predecessors, (10207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:43:27,128 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 6137 states to 6137 states and 10207 transitions.
[2023-12-25 22:43:27,128 INFO  L78                 Accepts]: Start accepts. Automaton has 6137 states and 10207 transitions. Word has length 3989
[2023-12-25 22:43:27,130 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 22:43:27,130 INFO  L495      AbstractCegarLoop]: Abstraction has 6137 states and 10207 transitions.
[2023-12-25 22:43:27,131 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 6 states, 6 states have (on average 600.0) internal successors, (3600), 6 states have internal predecessors, (3600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:43:27,131 INFO  L276                IsEmpty]: Start isEmpty. Operand 6137 states and 10207 transitions.
[2023-12-25 22:43:27,211 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 3991
[2023-12-25 22:43:27,211 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 22:43:27,212 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 22:43:27,266 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 22:43:27,426 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 22:43:27,426 INFO  L420      AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 22:43:27,426 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 22:43:27,427 INFO  L85        PathProgramCache]: Analyzing trace with hash 1773083857, now seen corresponding path program 1 times
[2023-12-25 22:43:27,427 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 22:43:27,427 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1512352648]
[2023-12-25 22:43:27,428 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:43:27,428 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 22:43:27,668 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 22:43:27,668 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [600711520]
[2023-12-25 22:43:27,669 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:43:27,669 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 22:43:27,669 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 22:43:27,670 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 22:43:27,671 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 22:43:31,753 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 22:43:31,856 INFO  L262         TraceCheckSpWp]: Trace formula consists of 17719 conjuncts, 17 conjunts are in the unsatisfiable core
[2023-12-25 22:43:31,897 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 22:43:32,404 INFO  L134       CoverageAnalysis]: Checked inductivity of 448 backedges. 58 proven. 390 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-25 22:43:32,404 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-12-25 22:43:32,543 INFO  L134       CoverageAnalysis]: Checked inductivity of 448 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 386 trivial. 0 not checked.
[2023-12-25 22:43:32,543 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 22:43:32,543 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1512352648]
[2023-12-25 22:43:32,544 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 22:43:32,544 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [600711520]
[2023-12-25 22:43:32,544 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [600711520] provided 1 perfect and 1 imperfect interpolant sequences
[2023-12-25 22:43:32,544 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2023-12-25 22:43:32,544 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10
[2023-12-25 22:43:32,545 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2137032733]
[2023-12-25 22:43:32,545 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 22:43:32,547 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-12-25 22:43:32,547 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 22:43:32,549 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-12-25 22:43:32,549 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90
[2023-12-25 22:43:32,550 INFO  L87              Difference]: Start difference. First operand 6137 states and 10207 transitions. Second operand  has 5 states, 5 states have (on average 721.0) internal successors, (3605), 5 states have internal predecessors, (3605), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:43:37,741 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 22:43:37,741 INFO  L93              Difference]: Finished difference Result 21605 states and 35775 transitions.
[2023-12-25 22:43:37,741 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2023-12-25 22:43:37,742 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 721.0) internal successors, (3605), 5 states have internal predecessors, (3605), 0 states have call successors, (0), 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 3990
[2023-12-25 22:43:37,744 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 22:43:37,755 INFO  L225             Difference]: With dead ends: 21605
[2023-12-25 22:43:37,755 INFO  L226             Difference]: Without dead ends: 11342
[2023-12-25 22:43:37,763 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 7979 GetRequests, 7970 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 22:43:37,763 INFO  L413           NwaCegarLoop]: 15006 mSDtfsCounter, 23209 mSDsluCounter, 14469 mSDsCounter, 0 mSdLazyCounter, 6827 mSolverCounterSat, 453 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23209 SdHoareTripleChecker+Valid, 29475 SdHoareTripleChecker+Invalid, 7280 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 453 IncrementalHoareTripleChecker+Valid, 6827 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time
[2023-12-25 22:43:37,764 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [23209 Valid, 29475 Invalid, 7280 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [453 Valid, 6827 Invalid, 0 Unknown, 0 Unchecked, 4.9s Time]
[2023-12-25 22:43:37,773 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 11342 states.
[2023-12-25 22:43:37,822 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 11342 to 6142.
[2023-12-25 22:43:37,827 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 6142 states, 6141 states have (on average 1.6632470281713077) internal successors, (10214), 6141 states have internal predecessors, (10214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:43:37,831 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 6142 states to 6142 states and 10214 transitions.
[2023-12-25 22:43:37,832 INFO  L78                 Accepts]: Start accepts. Automaton has 6142 states and 10214 transitions. Word has length 3990
[2023-12-25 22:43:37,833 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 22:43:37,834 INFO  L495      AbstractCegarLoop]: Abstraction has 6142 states and 10214 transitions.
[2023-12-25 22:43:37,834 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 721.0) internal successors, (3605), 5 states have internal predecessors, (3605), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:43:37,834 INFO  L276                IsEmpty]: Start isEmpty. Operand 6142 states and 10214 transitions.
[2023-12-25 22:43:37,915 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 3992
[2023-12-25 22:43:37,915 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 22:43:37,916 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 22:43:37,969 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0
[2023-12-25 22:43:38,117 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 22:43:38,117 INFO  L420      AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 22:43:38,117 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 22:43:38,118 INFO  L85        PathProgramCache]: Analyzing trace with hash -1863305785, now seen corresponding path program 1 times
[2023-12-25 22:43:38,119 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 22:43:38,119 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [963953898]
[2023-12-25 22:43:38,119 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:43:38,119 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 22:43:38,359 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 22:43:38,359 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1756632457]
[2023-12-25 22:43:38,360 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:43:38,360 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 22:43:38,360 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 22:43:38,361 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 22:43:38,362 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 22:43:42,476 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 22:43:42,573 INFO  L262         TraceCheckSpWp]: Trace formula consists of 17722 conjuncts, 17 conjunts are in the unsatisfiable core
[2023-12-25 22:43:42,621 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 22:43:43,141 INFO  L134       CoverageAnalysis]: Checked inductivity of 448 backedges. 62 proven. 386 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-25 22:43:43,141 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-12-25 22:43:43,285 INFO  L134       CoverageAnalysis]: Checked inductivity of 448 backedges. 66 proven. 0 refuted. 0 times theorem prover too weak. 382 trivial. 0 not checked.
[2023-12-25 22:43:43,285 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 22:43:43,285 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [963953898]
[2023-12-25 22:43:43,285 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 22:43:43,285 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1756632457]
[2023-12-25 22:43:43,285 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1756632457] provided 1 perfect and 1 imperfect interpolant sequences
[2023-12-25 22:43:43,285 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2023-12-25 22:43:43,286 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10
[2023-12-25 22:43:43,286 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1939594689]
[2023-12-25 22:43:43,286 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 22:43:43,289 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-12-25 22:43:43,289 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 22:43:43,290 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-12-25 22:43:43,291 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90
[2023-12-25 22:43:43,291 INFO  L87              Difference]: Start difference. First operand 6142 states and 10214 transitions. Second operand  has 5 states, 5 states have (on average 722.0) internal successors, (3610), 5 states have internal predecessors, (3610), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:43:48,575 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 22:43:48,575 INFO  L93              Difference]: Finished difference Result 21629 states and 35809 transitions.
[2023-12-25 22:43:48,575 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2023-12-25 22:43:48,576 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 722.0) internal successors, (3610), 5 states have internal predecessors, (3610), 0 states have call successors, (0), 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 3991
[2023-12-25 22:43:48,579 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 22:43:48,588 INFO  L225             Difference]: With dead ends: 21629
[2023-12-25 22:43:48,588 INFO  L226             Difference]: Without dead ends: 11346
[2023-12-25 22:43:48,595 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 7981 GetRequests, 7972 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 22:43:48,596 INFO  L413           NwaCegarLoop]: 14993 mSDtfsCounter, 23172 mSDsluCounter, 14464 mSDsCounter, 0 mSdLazyCounter, 6823 mSolverCounterSat, 453 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23172 SdHoareTripleChecker+Valid, 29457 SdHoareTripleChecker+Invalid, 7276 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 453 IncrementalHoareTripleChecker+Valid, 6823 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time
[2023-12-25 22:43:48,596 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [23172 Valid, 29457 Invalid, 7276 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [453 Valid, 6823 Invalid, 0 Unknown, 0 Unchecked, 5.0s Time]
[2023-12-25 22:43:48,604 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 11346 states.
[2023-12-25 22:43:48,656 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 11346 to 6147.
[2023-12-25 22:43:48,660 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 6147 states, 6146 states have (on average 1.6630328669053043) internal successors, (10221), 6146 states have internal predecessors, (10221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:43:48,665 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 6147 states to 6147 states and 10221 transitions.
[2023-12-25 22:43:48,665 INFO  L78                 Accepts]: Start accepts. Automaton has 6147 states and 10221 transitions. Word has length 3991
[2023-12-25 22:43:48,667 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 22:43:48,667 INFO  L495      AbstractCegarLoop]: Abstraction has 6147 states and 10221 transitions.
[2023-12-25 22:43:48,668 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 722.0) internal successors, (3610), 5 states have internal predecessors, (3610), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:43:48,668 INFO  L276                IsEmpty]: Start isEmpty. Operand 6147 states and 10221 transitions.
[2023-12-25 22:43:48,750 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 3993
[2023-12-25 22:43:48,750 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 22:43:48,751 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 22:43:48,803 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 22:43:48,951 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 22:43:48,952 INFO  L420      AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 22:43:48,952 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 22:43:48,953 INFO  L85        PathProgramCache]: Analyzing trace with hash -1015555491, now seen corresponding path program 1 times
[2023-12-25 22:43:48,953 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 22:43:48,953 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [822069660]
[2023-12-25 22:43:48,954 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:43:48,954 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 22:43:49,192 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 22:43:49,192 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1633816055]
[2023-12-25 22:43:49,193 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:43:49,193 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 22:43:49,193 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 22:43:49,194 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 22:43:49,195 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 22:43:53,110 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 22:43:53,215 INFO  L262         TraceCheckSpWp]: Trace formula consists of 17725 conjuncts, 17 conjunts are in the unsatisfiable core
[2023-12-25 22:43:53,255 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 22:43:53,776 INFO  L134       CoverageAnalysis]: Checked inductivity of 448 backedges. 66 proven. 382 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-25 22:43:53,776 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-12-25 22:43:53,921 INFO  L134       CoverageAnalysis]: Checked inductivity of 448 backedges. 70 proven. 0 refuted. 0 times theorem prover too weak. 378 trivial. 0 not checked.
[2023-12-25 22:43:53,921 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 22:43:53,921 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [822069660]
[2023-12-25 22:43:53,921 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 22:43:53,921 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1633816055]
[2023-12-25 22:43:53,921 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1633816055] provided 1 perfect and 1 imperfect interpolant sequences
[2023-12-25 22:43:53,921 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2023-12-25 22:43:53,922 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10
[2023-12-25 22:43:53,922 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1120366945]
[2023-12-25 22:43:53,922 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 22:43:53,924 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-12-25 22:43:53,924 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 22:43:53,926 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-12-25 22:43:53,926 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90
[2023-12-25 22:43:53,927 INFO  L87              Difference]: Start difference. First operand 6147 states and 10221 transitions. Second operand  has 5 states, 5 states have (on average 723.0) internal successors, (3615), 5 states have internal predecessors, (3615), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:43:59,099 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 22:43:59,099 INFO  L93              Difference]: Finished difference Result 21653 states and 35843 transitions.
[2023-12-25 22:43:59,100 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2023-12-25 22:43:59,101 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 723.0) internal successors, (3615), 5 states have internal predecessors, (3615), 0 states have call successors, (0), 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 3992
[2023-12-25 22:43:59,105 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 22:43:59,115 INFO  L225             Difference]: With dead ends: 21653
[2023-12-25 22:43:59,115 INFO  L226             Difference]: Without dead ends: 11350
[2023-12-25 22:43:59,123 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 7983 GetRequests, 7974 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 22:43:59,124 INFO  L413           NwaCegarLoop]: 14980 mSDtfsCounter, 23185 mSDsluCounter, 14457 mSDsCounter, 0 mSdLazyCounter, 6819 mSolverCounterSat, 453 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23185 SdHoareTripleChecker+Valid, 29437 SdHoareTripleChecker+Invalid, 7272 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 453 IncrementalHoareTripleChecker+Valid, 6819 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time
[2023-12-25 22:43:59,124 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [23185 Valid, 29437 Invalid, 7272 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [453 Valid, 6819 Invalid, 0 Unknown, 0 Unchecked, 4.9s Time]
[2023-12-25 22:43:59,131 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 11350 states.
[2023-12-25 22:43:59,183 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 11350 to 6152.
[2023-12-25 22:43:59,187 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 6152 states, 6151 states have (on average 1.6628190538123881) internal successors, (10228), 6151 states have internal predecessors, (10228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:43:59,192 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 6152 states to 6152 states and 10228 transitions.
[2023-12-25 22:43:59,192 INFO  L78                 Accepts]: Start accepts. Automaton has 6152 states and 10228 transitions. Word has length 3992
[2023-12-25 22:43:59,194 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 22:43:59,194 INFO  L495      AbstractCegarLoop]: Abstraction has 6152 states and 10228 transitions.
[2023-12-25 22:43:59,194 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 723.0) internal successors, (3615), 5 states have internal predecessors, (3615), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:43:59,195 INFO  L276                IsEmpty]: Start isEmpty. Operand 6152 states and 10228 transitions.
[2023-12-25 22:43:59,275 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 3994
[2023-12-25 22:43:59,275 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 22:43:59,277 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 22:43:59,334 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0
[2023-12-25 22:43:59,492 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 22:43:59,492 INFO  L420      AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 22:43:59,493 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 22:43:59,493 INFO  L85        PathProgramCache]: Analyzing trace with hash -1456568005, now seen corresponding path program 1 times
[2023-12-25 22:43:59,493 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 22:43:59,493 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1358123739]
[2023-12-25 22:43:59,493 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:43:59,494 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 22:43:59,785 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 22:43:59,786 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1696737695]
[2023-12-25 22:43:59,787 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:43:59,787 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 22:43:59,787 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 22:43:59,788 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 22:43:59,789 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 22:44:03,707 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 22:44:03,807 INFO  L262         TraceCheckSpWp]: Trace formula consists of 17728 conjuncts, 17 conjunts are in the unsatisfiable core
[2023-12-25 22:44:03,856 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 22:44:04,373 INFO  L134       CoverageAnalysis]: Checked inductivity of 448 backedges. 70 proven. 378 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-25 22:44:04,373 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-12-25 22:44:04,533 INFO  L134       CoverageAnalysis]: Checked inductivity of 448 backedges. 74 proven. 0 refuted. 0 times theorem prover too weak. 374 trivial. 0 not checked.
[2023-12-25 22:44:04,533 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 22:44:04,533 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1358123739]
[2023-12-25 22:44:04,533 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 22:44:04,533 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1696737695]
[2023-12-25 22:44:04,533 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1696737695] provided 1 perfect and 1 imperfect interpolant sequences
[2023-12-25 22:44:04,534 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2023-12-25 22:44:04,535 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10
[2023-12-25 22:44:04,535 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [70004268]
[2023-12-25 22:44:04,535 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 22:44:04,537 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-12-25 22:44:04,538 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 22:44:04,540 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-12-25 22:44:04,540 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90
[2023-12-25 22:44:04,540 INFO  L87              Difference]: Start difference. First operand 6152 states and 10228 transitions. Second operand  has 5 states, 5 states have (on average 724.0) internal successors, (3620), 5 states have internal predecessors, (3620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:44:09,727 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 22:44:09,727 INFO  L93              Difference]: Finished difference Result 21677 states and 35877 transitions.
[2023-12-25 22:44:09,727 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2023-12-25 22:44:09,728 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 724.0) internal successors, (3620), 5 states have internal predecessors, (3620), 0 states have call successors, (0), 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 3993
[2023-12-25 22:44:09,731 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 22:44:09,740 INFO  L225             Difference]: With dead ends: 21677
[2023-12-25 22:44:09,741 INFO  L226             Difference]: Without dead ends: 11354
[2023-12-25 22:44:09,748 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 7985 GetRequests, 7976 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 22:44:09,749 INFO  L413           NwaCegarLoop]: 14967 mSDtfsCounter, 23146 mSDsluCounter, 14452 mSDsCounter, 0 mSdLazyCounter, 6815 mSolverCounterSat, 453 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23146 SdHoareTripleChecker+Valid, 29419 SdHoareTripleChecker+Invalid, 7268 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 453 IncrementalHoareTripleChecker+Valid, 6815 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time
[2023-12-25 22:44:09,749 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [23146 Valid, 29419 Invalid, 7268 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [453 Valid, 6815 Invalid, 0 Unknown, 0 Unchecked, 4.9s Time]
[2023-12-25 22:44:09,757 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 11354 states.
[2023-12-25 22:44:09,808 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 11354 to 6157.
[2023-12-25 22:44:09,813 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 6157 states, 6156 states have (on average 1.6626055880441846) internal successors, (10235), 6156 states have internal predecessors, (10235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:44:09,818 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 6157 states to 6157 states and 10235 transitions.
[2023-12-25 22:44:09,818 INFO  L78                 Accepts]: Start accepts. Automaton has 6157 states and 10235 transitions. Word has length 3993
[2023-12-25 22:44:09,820 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 22:44:09,820 INFO  L495      AbstractCegarLoop]: Abstraction has 6157 states and 10235 transitions.
[2023-12-25 22:44:09,821 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 724.0) internal successors, (3620), 5 states have internal predecessors, (3620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:44:09,821 INFO  L276                IsEmpty]: Start isEmpty. Operand 6157 states and 10235 transitions.
[2023-12-25 22:44:09,903 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 3995
[2023-12-25 22:44:09,903 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 22:44:09,904 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 22:44:09,962 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Ended with exit code 0
[2023-12-25 22:44:10,132 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 22:44:10,133 INFO  L420      AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 22:44:10,133 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 22:44:10,133 INFO  L85        PathProgramCache]: Analyzing trace with hash -1371257367, now seen corresponding path program 1 times
[2023-12-25 22:44:10,133 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 22:44:10,133 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [700179290]
[2023-12-25 22:44:10,134 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:44:10,134 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 22:44:10,361 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 22:44:10,361 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [702319798]
[2023-12-25 22:44:10,362 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:44:10,362 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 22:44:10,362 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 22:44:10,363 INFO  L229       MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-25 22:44:10,364 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process
[2023-12-25 22:44:14,265 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 22:44:14,369 INFO  L262         TraceCheckSpWp]: Trace formula consists of 17731 conjuncts, 17 conjunts are in the unsatisfiable core
[2023-12-25 22:44:14,407 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 22:44:15,104 INFO  L134       CoverageAnalysis]: Checked inductivity of 448 backedges. 74 proven. 374 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-25 22:44:15,104 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-12-25 22:44:15,258 INFO  L134       CoverageAnalysis]: Checked inductivity of 448 backedges. 78 proven. 0 refuted. 0 times theorem prover too weak. 370 trivial. 0 not checked.
[2023-12-25 22:44:15,258 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 22:44:15,258 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [700179290]
[2023-12-25 22:44:15,258 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 22:44:15,258 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [702319798]
[2023-12-25 22:44:15,258 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [702319798] provided 1 perfect and 1 imperfect interpolant sequences
[2023-12-25 22:44:15,258 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2023-12-25 22:44:15,259 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10
[2023-12-25 22:44:15,259 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [990267081]
[2023-12-25 22:44:15,259 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 22:44:15,261 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-12-25 22:44:15,261 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 22:44:15,263 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-12-25 22:44:15,263 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90
[2023-12-25 22:44:15,263 INFO  L87              Difference]: Start difference. First operand 6157 states and 10235 transitions. Second operand  has 5 states, 5 states have (on average 725.0) internal successors, (3625), 5 states have internal predecessors, (3625), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:44:20,454 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 22:44:20,454 INFO  L93              Difference]: Finished difference Result 21701 states and 35911 transitions.
[2023-12-25 22:44:20,454 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2023-12-25 22:44:20,455 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 725.0) internal successors, (3625), 5 states have internal predecessors, (3625), 0 states have call successors, (0), 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 3994
[2023-12-25 22:44:20,458 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 22:44:20,467 INFO  L225             Difference]: With dead ends: 21701
[2023-12-25 22:44:20,467 INFO  L226             Difference]: Without dead ends: 11358
[2023-12-25 22:44:20,473 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 7987 GetRequests, 7978 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 22:44:20,473 INFO  L413           NwaCegarLoop]: 14954 mSDtfsCounter, 23133 mSDsluCounter, 14446 mSDsCounter, 0 mSdLazyCounter, 6811 mSolverCounterSat, 453 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23133 SdHoareTripleChecker+Valid, 29400 SdHoareTripleChecker+Invalid, 7264 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 453 IncrementalHoareTripleChecker+Valid, 6811 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time
[2023-12-25 22:44:20,474 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [23133 Valid, 29400 Invalid, 7264 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [453 Valid, 6811 Invalid, 0 Unknown, 0 Unchecked, 4.9s Time]
[2023-12-25 22:44:20,480 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 11358 states.
[2023-12-25 22:44:20,526 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 11358 to 6162.
[2023-12-25 22:44:20,529 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 6162 states, 6161 states have (on average 1.6623924687550722) internal successors, (10242), 6161 states have internal predecessors, (10242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:44:20,534 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 6162 states to 6162 states and 10242 transitions.
[2023-12-25 22:44:20,534 INFO  L78                 Accepts]: Start accepts. Automaton has 6162 states and 10242 transitions. Word has length 3994
[2023-12-25 22:44:20,536 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 22:44:20,536 INFO  L495      AbstractCegarLoop]: Abstraction has 6162 states and 10242 transitions.
[2023-12-25 22:44:20,537 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 725.0) internal successors, (3625), 5 states have internal predecessors, (3625), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:44:20,537 INFO  L276                IsEmpty]: Start isEmpty. Operand 6162 states and 10242 transitions.
[2023-12-25 22:44:20,617 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 3996
[2023-12-25 22:44:20,618 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 22:44:20,619 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 22:44:20,665 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0
[2023-12-25 22:44:20,819 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 22:44:20,819 INFO  L420      AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 22:44:20,820 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 22:44:20,820 INFO  L85        PathProgramCache]: Analyzing trace with hash -2100457809, now seen corresponding path program 1 times
[2023-12-25 22:44:20,820 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 22:44:20,820 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [81201640]
[2023-12-25 22:44:20,821 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:44:20,821 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 22:44:21,054 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 22:44:21,054 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1518405784]
[2023-12-25 22:44:21,055 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:44:21,055 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 22:44:21,055 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 22:44:21,056 INFO  L229       MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-25 22:44:21,057 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process
[2023-12-25 22:44:25,021 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 22:44:25,144 INFO  L262         TraceCheckSpWp]: Trace formula consists of 17734 conjuncts, 17 conjunts are in the unsatisfiable core
[2023-12-25 22:44:25,191 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 22:44:25,709 INFO  L134       CoverageAnalysis]: Checked inductivity of 448 backedges. 78 proven. 370 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-25 22:44:25,709 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-12-25 22:44:26,070 INFO  L134       CoverageAnalysis]: Checked inductivity of 448 backedges. 82 proven. 0 refuted. 0 times theorem prover too weak. 366 trivial. 0 not checked.
[2023-12-25 22:44:26,070 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 22:44:26,070 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [81201640]
[2023-12-25 22:44:26,070 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 22:44:26,070 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1518405784]
[2023-12-25 22:44:26,070 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1518405784] provided 1 perfect and 1 imperfect interpolant sequences
[2023-12-25 22:44:26,070 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2023-12-25 22:44:26,071 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10
[2023-12-25 22:44:26,071 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [448943294]
[2023-12-25 22:44:26,072 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 22:44:26,074 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-12-25 22:44:26,075 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 22:44:26,077 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-12-25 22:44:26,077 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90
[2023-12-25 22:44:26,078 INFO  L87              Difference]: Start difference. First operand 6162 states and 10242 transitions. Second operand  has 5 states, 5 states have (on average 726.0) internal successors, (3630), 5 states have internal predecessors, (3630), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:44:32,066 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 22:44:32,066 INFO  L93              Difference]: Finished difference Result 21725 states and 35945 transitions.
[2023-12-25 22:44:32,067 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2023-12-25 22:44:32,068 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 726.0) internal successors, (3630), 5 states have internal predecessors, (3630), 0 states have call successors, (0), 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 3995
[2023-12-25 22:44:32,070 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 22:44:32,080 INFO  L225             Difference]: With dead ends: 21725
[2023-12-25 22:44:32,080 INFO  L226             Difference]: Without dead ends: 11362
[2023-12-25 22:44:32,088 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 7989 GetRequests, 7980 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 22:44:32,088 INFO  L413           NwaCegarLoop]: 14941 mSDtfsCounter, 15872 mSDsluCounter, 21851 mSDsCounter, 0 mSdLazyCounter, 9339 mSolverCounterSat, 453 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15872 SdHoareTripleChecker+Valid, 36792 SdHoareTripleChecker+Invalid, 9792 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 453 IncrementalHoareTripleChecker+Valid, 9339 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.7s IncrementalHoareTripleChecker+Time
[2023-12-25 22:44:32,089 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [15872 Valid, 36792 Invalid, 9792 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [453 Valid, 9339 Invalid, 0 Unknown, 0 Unchecked, 5.7s Time]
[2023-12-25 22:44:32,099 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 11362 states.
[2023-12-25 22:44:32,154 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 11362 to 6167.
[2023-12-25 22:44:32,158 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 6167 states, 6166 states have (on average 1.6621796951021732) internal successors, (10249), 6166 states have internal predecessors, (10249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:44:32,163 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 6167 states to 6167 states and 10249 transitions.
[2023-12-25 22:44:32,163 INFO  L78                 Accepts]: Start accepts. Automaton has 6167 states and 10249 transitions. Word has length 3995
[2023-12-25 22:44:32,165 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 22:44:32,165 INFO  L495      AbstractCegarLoop]: Abstraction has 6167 states and 10249 transitions.
[2023-12-25 22:44:32,166 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 726.0) internal successors, (3630), 5 states have internal predecessors, (3630), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:44:32,166 INFO  L276                IsEmpty]: Start isEmpty. Operand 6167 states and 10249 transitions.
[2023-12-25 22:44:32,248 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 3997
[2023-12-25 22:44:32,249 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 22:44:32,249 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 22:44:32,302 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Ended with exit code 0
[2023-12-25 22:44:32,450 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33
[2023-12-25 22:44:32,450 INFO  L420      AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 22:44:32,450 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 22:44:32,451 INFO  L85        PathProgramCache]: Analyzing trace with hash -570712203, now seen corresponding path program 1 times
[2023-12-25 22:44:32,451 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 22:44:32,451 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1541617904]
[2023-12-25 22:44:32,451 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:44:32,452 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 22:44:32,793 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 22:44:32,793 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [962686155]
[2023-12-25 22:44:32,794 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:44:32,794 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 22:44:32,794 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 22:44:32,795 INFO  L229       MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-25 22:44:32,798 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process
[2023-12-25 22:44:36,677 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 22:44:36,784 INFO  L262         TraceCheckSpWp]: Trace formula consists of 17737 conjuncts, 17 conjunts are in the unsatisfiable core
[2023-12-25 22:44:36,820 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 22:44:37,324 INFO  L134       CoverageAnalysis]: Checked inductivity of 448 backedges. 82 proven. 366 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-25 22:44:37,325 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-12-25 22:44:37,489 INFO  L134       CoverageAnalysis]: Checked inductivity of 448 backedges. 86 proven. 0 refuted. 0 times theorem prover too weak. 362 trivial. 0 not checked.
[2023-12-25 22:44:37,490 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 22:44:37,490 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1541617904]
[2023-12-25 22:44:37,490 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 22:44:37,490 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [962686155]
[2023-12-25 22:44:37,490 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [962686155] provided 1 perfect and 1 imperfect interpolant sequences
[2023-12-25 22:44:37,490 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2023-12-25 22:44:37,491 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10
[2023-12-25 22:44:37,491 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2067393810]
[2023-12-25 22:44:37,491 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 22:44:37,493 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-12-25 22:44:37,493 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 22:44:37,495 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-12-25 22:44:37,495 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90
[2023-12-25 22:44:37,495 INFO  L87              Difference]: Start difference. First operand 6167 states and 10249 transitions. Second operand  has 5 states, 5 states have (on average 727.0) internal successors, (3635), 5 states have internal predecessors, (3635), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:44:42,754 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 22:44:42,754 INFO  L93              Difference]: Finished difference Result 21749 states and 35979 transitions.
[2023-12-25 22:44:42,755 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2023-12-25 22:44:42,755 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 727.0) internal successors, (3635), 5 states have internal predecessors, (3635), 0 states have call successors, (0), 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 3996
[2023-12-25 22:44:42,758 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 22:44:42,764 INFO  L225             Difference]: With dead ends: 21749
[2023-12-25 22:44:42,765 INFO  L226             Difference]: Without dead ends: 11366
[2023-12-25 22:44:42,768 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 7991 GetRequests, 7982 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 22:44:42,768 INFO  L413           NwaCegarLoop]: 14928 mSDtfsCounter, 23137 mSDsluCounter, 14433 mSDsCounter, 0 mSdLazyCounter, 6803 mSolverCounterSat, 453 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23137 SdHoareTripleChecker+Valid, 29361 SdHoareTripleChecker+Invalid, 7256 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 453 IncrementalHoareTripleChecker+Valid, 6803 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time
[2023-12-25 22:44:42,768 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [23137 Valid, 29361 Invalid, 7256 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [453 Valid, 6803 Invalid, 0 Unknown, 0 Unchecked, 5.0s Time]
[2023-12-25 22:44:42,775 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 11366 states.
[2023-12-25 22:44:42,818 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 11366 to 6172.
[2023-12-25 22:44:42,822 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 6172 states, 6171 states have (on average 1.661967266245341) internal successors, (10256), 6171 states have internal predecessors, (10256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:44:42,827 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 6172 states to 6172 states and 10256 transitions.
[2023-12-25 22:44:42,828 INFO  L78                 Accepts]: Start accepts. Automaton has 6172 states and 10256 transitions. Word has length 3996
[2023-12-25 22:44:42,829 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 22:44:42,830 INFO  L495      AbstractCegarLoop]: Abstraction has 6172 states and 10256 transitions.
[2023-12-25 22:44:42,830 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 727.0) internal successors, (3635), 5 states have internal predecessors, (3635), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:44:42,830 INFO  L276                IsEmpty]: Start isEmpty. Operand 6172 states and 10256 transitions.
[2023-12-25 22:44:42,911 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 3998
[2023-12-25 22:44:42,911 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 22:44:42,912 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 22:44:42,960 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Forceful destruction successful, exit code 0
[2023-12-25 22:44:43,113 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,32 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 22:44:43,113 INFO  L420      AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 22:44:43,113 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 22:44:43,114 INFO  L85        PathProgramCache]: Analyzing trace with hash -989460957, now seen corresponding path program 1 times
[2023-12-25 22:44:43,114 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 22:44:43,114 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [624527014]
[2023-12-25 22:44:43,114 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:44:43,114 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 22:44:43,377 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 22:44:43,377 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2012585343]
[2023-12-25 22:44:43,378 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:44:43,378 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 22:44:43,378 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 22:44:43,379 INFO  L229       MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-25 22:44:43,379 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process
[2023-12-25 22:44:47,217 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 22:44:47,318 INFO  L262         TraceCheckSpWp]: Trace formula consists of 17740 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-12-25 22:44:47,360 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 22:44:47,880 INFO  L134       CoverageAnalysis]: Checked inductivity of 448 backedges. 86 proven. 362 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-25 22:44:47,881 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-12-25 22:44:48,074 INFO  L134       CoverageAnalysis]: Checked inductivity of 448 backedges. 90 proven. 0 refuted. 0 times theorem prover too weak. 358 trivial. 0 not checked.
[2023-12-25 22:44:48,075 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 22:44:48,075 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [624527014]
[2023-12-25 22:44:48,075 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 22:44:48,075 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2012585343]
[2023-12-25 22:44:48,075 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [2012585343] provided 1 perfect and 1 imperfect interpolant sequences
[2023-12-25 22:44:48,075 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2023-12-25 22:44:48,076 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8] total 12
[2023-12-25 22:44:48,076 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [726940514]
[2023-12-25 22:44:48,076 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 22:44:48,078 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2023-12-25 22:44:48,078 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 22:44:48,080 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2023-12-25 22:44:48,080 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132
[2023-12-25 22:44:48,080 INFO  L87              Difference]: Start difference. First operand 6172 states and 10256 transitions. Second operand  has 6 states, 6 states have (on average 606.6666666666666) internal successors, (3640), 6 states have internal predecessors, (3640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:44:57,469 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 22:44:57,469 INFO  L93              Difference]: Finished difference Result 27208 states and 45040 transitions.
[2023-12-25 22:44:57,469 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. 
[2023-12-25 22:44:57,470 INFO  L78                 Accepts]: Start accepts. Automaton has  has 6 states, 6 states have (on average 606.6666666666666) internal successors, (3640), 6 states have internal predecessors, (3640), 0 states have call successors, (0), 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 3997
[2023-12-25 22:44:57,473 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 22:44:57,488 INFO  L225             Difference]: With dead ends: 27208
[2023-12-25 22:44:57,488 INFO  L226             Difference]: Without dead ends: 16805
[2023-12-25 22:44:57,499 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 7995 GetRequests, 7982 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210
[2023-12-25 22:44:57,499 INFO  L413           NwaCegarLoop]: 14918 mSDtfsCounter, 31837 mSDsluCounter, 35613 mSDsCounter, 0 mSdLazyCounter, 14318 mSolverCounterSat, 456 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31837 SdHoareTripleChecker+Valid, 50531 SdHoareTripleChecker+Invalid, 14774 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 456 IncrementalHoareTripleChecker+Valid, 14318 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.9s IncrementalHoareTripleChecker+Time
[2023-12-25 22:44:57,499 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [31837 Valid, 50531 Invalid, 14774 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [456 Valid, 14318 Invalid, 0 Unknown, 0 Unchecked, 8.9s Time]
[2023-12-25 22:44:57,510 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 16805 states.
[2023-12-25 22:44:57,576 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 16805 to 6177.
[2023-12-25 22:44:57,580 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 6177 states, 6176 states have (on average 1.6617551813471503) internal successors, (10263), 6176 states have internal predecessors, (10263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:44:57,585 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 6177 states to 6177 states and 10263 transitions.
[2023-12-25 22:44:57,585 INFO  L78                 Accepts]: Start accepts. Automaton has 6177 states and 10263 transitions. Word has length 3997
[2023-12-25 22:44:57,587 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 22:44:57,587 INFO  L495      AbstractCegarLoop]: Abstraction has 6177 states and 10263 transitions.
[2023-12-25 22:44:57,588 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 6 states, 6 states have (on average 606.6666666666666) internal successors, (3640), 6 states have internal predecessors, (3640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:44:57,588 INFO  L276                IsEmpty]: Start isEmpty. Operand 6177 states and 10263 transitions.
[2023-12-25 22:44:57,669 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 3999
[2023-12-25 22:44:57,669 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 22:44:57,670 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 22:44:57,716 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Ended with exit code 0
[2023-12-25 22:44:57,870 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35,33 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 22:44:57,871 INFO  L420      AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 22:44:57,871 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 22:44:57,872 INFO  L85        PathProgramCache]: Analyzing trace with hash -683333887, now seen corresponding path program 1 times
[2023-12-25 22:44:57,872 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 22:44:57,872 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [870095129]
[2023-12-25 22:44:57,872 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:44:57,872 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 22:44:58,153 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 22:44:58,153 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1338071445]
[2023-12-25 22:44:58,154 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:44:58,154 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 22:44:58,154 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 22:44:58,155 INFO  L229       MonitoredProcess]: Starting monitored process 34 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-25 22:44:58,157 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process
[2023-12-25 22:45:02,156 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 22:45:02,249 INFO  L262         TraceCheckSpWp]: Trace formula consists of 17743 conjuncts, 17 conjunts are in the unsatisfiable core
[2023-12-25 22:45:02,281 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 22:45:02,785 INFO  L134       CoverageAnalysis]: Checked inductivity of 448 backedges. 90 proven. 358 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-25 22:45:02,785 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-12-25 22:45:02,970 INFO  L134       CoverageAnalysis]: Checked inductivity of 448 backedges. 94 proven. 0 refuted. 0 times theorem prover too weak. 354 trivial. 0 not checked.
[2023-12-25 22:45:02,971 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 22:45:02,971 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [870095129]
[2023-12-25 22:45:02,972 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 22:45:02,972 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1338071445]
[2023-12-25 22:45:02,972 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1338071445] provided 1 perfect and 1 imperfect interpolant sequences
[2023-12-25 22:45:02,972 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2023-12-25 22:45:02,973 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10
[2023-12-25 22:45:02,973 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [643226484]
[2023-12-25 22:45:02,973 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 22:45:02,975 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-12-25 22:45:02,975 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 22:45:02,977 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-12-25 22:45:02,977 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90
[2023-12-25 22:45:02,978 INFO  L87              Difference]: Start difference. First operand 6177 states and 10263 transitions. Second operand  has 5 states, 5 states have (on average 729.0) internal successors, (3645), 5 states have internal predecessors, (3645), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:45:08,978 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 22:45:08,978 INFO  L93              Difference]: Finished difference Result 21797 states and 36047 transitions.
[2023-12-25 22:45:08,978 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2023-12-25 22:45:08,979 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 729.0) internal successors, (3645), 5 states have internal predecessors, (3645), 0 states have call successors, (0), 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 3998
[2023-12-25 22:45:08,982 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 22:45:08,992 INFO  L225             Difference]: With dead ends: 21797
[2023-12-25 22:45:08,992 INFO  L226             Difference]: Without dead ends: 11374
[2023-12-25 22:45:09,000 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 7995 GetRequests, 7986 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 22:45:09,001 INFO  L413           NwaCegarLoop]: 14902 mSDtfsCounter, 15848 mSDsluCounter, 21815 mSDsCounter, 0 mSdLazyCounter, 9315 mSolverCounterSat, 453 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15848 SdHoareTripleChecker+Valid, 36717 SdHoareTripleChecker+Invalid, 9768 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 453 IncrementalHoareTripleChecker+Valid, 9315 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.7s IncrementalHoareTripleChecker+Time
[2023-12-25 22:45:09,001 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [15848 Valid, 36717 Invalid, 9768 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [453 Valid, 9315 Invalid, 0 Unknown, 0 Unchecked, 5.7s Time]
[2023-12-25 22:45:09,009 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 11374 states.
[2023-12-25 22:45:09,061 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 11374 to 6182.
[2023-12-25 22:45:09,065 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 6182 states, 6181 states have (on average 1.6615434395728848) internal successors, (10270), 6181 states have internal predecessors, (10270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:45:09,070 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 6182 states to 6182 states and 10270 transitions.
[2023-12-25 22:45:09,070 INFO  L78                 Accepts]: Start accepts. Automaton has 6182 states and 10270 transitions. Word has length 3998
[2023-12-25 22:45:09,072 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 22:45:09,072 INFO  L495      AbstractCegarLoop]: Abstraction has 6182 states and 10270 transitions.
[2023-12-25 22:45:09,073 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 729.0) internal successors, (3645), 5 states have internal predecessors, (3645), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:45:09,073 INFO  L276                IsEmpty]: Start isEmpty. Operand 6182 states and 10270 transitions.
[2023-12-25 22:45:09,155 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 4000
[2023-12-25 22:45:09,156 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 22:45:09,157 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 22:45:09,210 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Forceful destruction successful, exit code 0
[2023-12-25 22:45:09,357 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36
[2023-12-25 22:45:09,358 INFO  L420      AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 22:45:09,358 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 22:45:09,358 INFO  L85        PathProgramCache]: Analyzing trace with hash -128929897, now seen corresponding path program 1 times
[2023-12-25 22:45:09,359 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 22:45:09,359 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [325105251]
[2023-12-25 22:45:09,359 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:45:09,359 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 22:45:09,597 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 22:45:09,598 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1351959283]
[2023-12-25 22:45:09,598 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:45:09,598 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 22:45:09,599 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 22:45:09,599 INFO  L229       MonitoredProcess]: Starting monitored process 35 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-25 22:45:09,601 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process
[2023-12-25 22:45:13,582 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 22:45:13,697 INFO  L262         TraceCheckSpWp]: Trace formula consists of 17746 conjuncts, 17 conjunts are in the unsatisfiable core
[2023-12-25 22:45:13,741 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 22:45:14,245 INFO  L134       CoverageAnalysis]: Checked inductivity of 448 backedges. 94 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-25 22:45:14,245 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-12-25 22:45:14,417 INFO  L134       CoverageAnalysis]: Checked inductivity of 448 backedges. 96 proven. 0 refuted. 0 times theorem prover too weak. 352 trivial. 0 not checked.
[2023-12-25 22:45:14,417 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 22:45:14,417 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [325105251]
[2023-12-25 22:45:14,417 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 22:45:14,417 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1351959283]
[2023-12-25 22:45:14,417 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1351959283] provided 1 perfect and 1 imperfect interpolant sequences
[2023-12-25 22:45:14,417 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2023-12-25 22:45:14,418 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10
[2023-12-25 22:45:14,418 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [319133277]
[2023-12-25 22:45:14,418 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 22:45:14,420 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-12-25 22:45:14,420 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 22:45:14,422 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-12-25 22:45:14,422 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90
[2023-12-25 22:45:14,422 INFO  L87              Difference]: Start difference. First operand 6182 states and 10270 transitions. Second operand  has 5 states, 5 states have (on average 729.6) internal successors, (3648), 5 states have internal predecessors, (3648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:45:19,761 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 22:45:19,761 INFO  L93              Difference]: Finished difference Result 21818 states and 36076 transitions.
[2023-12-25 22:45:19,762 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2023-12-25 22:45:19,763 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 729.6) internal successors, (3648), 5 states have internal predecessors, (3648), 0 states have call successors, (0), 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 3999
[2023-12-25 22:45:19,765 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 22:45:19,775 INFO  L225             Difference]: With dead ends: 21818
[2023-12-25 22:45:19,775 INFO  L226             Difference]: Without dead ends: 11375
[2023-12-25 22:45:19,783 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 7997 GetRequests, 7988 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 22:45:19,784 INFO  L413           NwaCegarLoop]: 14894 mSDtfsCounter, 23103 mSDsluCounter, 14416 mSDsCounter, 0 mSdLazyCounter, 6795 mSolverCounterSat, 453 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23103 SdHoareTripleChecker+Valid, 29310 SdHoareTripleChecker+Invalid, 7248 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 453 IncrementalHoareTripleChecker+Valid, 6795 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time
[2023-12-25 22:45:19,784 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [23103 Valid, 29310 Invalid, 7248 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [453 Valid, 6795 Invalid, 0 Unknown, 0 Unchecked, 5.1s Time]
[2023-12-25 22:45:19,794 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 11375 states.
[2023-12-25 22:45:19,848 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 11375 to 6184.
[2023-12-25 22:45:19,852 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 6184 states, 6183 states have (on average 1.6613294517224648) internal successors, (10272), 6183 states have internal predecessors, (10272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:45:19,857 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 6184 states to 6184 states and 10272 transitions.
[2023-12-25 22:45:19,857 INFO  L78                 Accepts]: Start accepts. Automaton has 6184 states and 10272 transitions. Word has length 3999
[2023-12-25 22:45:19,859 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 22:45:19,859 INFO  L495      AbstractCegarLoop]: Abstraction has 6184 states and 10272 transitions.
[2023-12-25 22:45:19,860 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 729.6) internal successors, (3648), 5 states have internal predecessors, (3648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:45:19,860 INFO  L276                IsEmpty]: Start isEmpty. Operand 6184 states and 10272 transitions.
[2023-12-25 22:45:19,941 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 4001
[2023-12-25 22:45:19,941 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 22:45:19,942 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 22:45:20,001 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Forceful destruction successful, exit code 0
[2023-12-25 22:45:20,156 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37
[2023-12-25 22:45:20,156 INFO  L420      AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 22:45:20,157 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 22:45:20,157 INFO  L85        PathProgramCache]: Analyzing trace with hash 1774136485, now seen corresponding path program 1 times
[2023-12-25 22:45:20,157 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 22:45:20,157 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [844894300]
[2023-12-25 22:45:20,157 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:45:20,158 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 22:45:20,477 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 22:45:20,478 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2020637396]
[2023-12-25 22:45:20,478 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:45:20,478 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 22:45:20,479 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 22:45:20,483 INFO  L229       MonitoredProcess]: Starting monitored process 36 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-25 22:45:20,484 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process
[2023-12-25 22:45:24,385 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 22:45:24,489 INFO  L262         TraceCheckSpWp]: Trace formula consists of 17750 conjuncts, 17 conjunts are in the unsatisfiable core
[2023-12-25 22:45:24,527 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 22:45:25,032 INFO  L134       CoverageAnalysis]: Checked inductivity of 448 backedges. 96 proven. 352 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-25 22:45:25,032 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-12-25 22:45:25,218 INFO  L134       CoverageAnalysis]: Checked inductivity of 448 backedges. 100 proven. 0 refuted. 0 times theorem prover too weak. 348 trivial. 0 not checked.
[2023-12-25 22:45:25,218 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 22:45:25,219 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [844894300]
[2023-12-25 22:45:25,219 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 22:45:25,219 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2020637396]
[2023-12-25 22:45:25,219 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [2020637396] provided 1 perfect and 1 imperfect interpolant sequences
[2023-12-25 22:45:25,219 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2023-12-25 22:45:25,219 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10
[2023-12-25 22:45:25,220 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [246781944]
[2023-12-25 22:45:25,220 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 22:45:25,221 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-12-25 22:45:25,221 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 22:45:25,223 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-12-25 22:45:25,223 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90
[2023-12-25 22:45:25,223 INFO  L87              Difference]: Start difference. First operand 6184 states and 10272 transitions. Second operand  has 5 states, 5 states have (on average 730.6) internal successors, (3653), 5 states have internal predecessors, (3653), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:45:30,427 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 22:45:30,428 INFO  L93              Difference]: Finished difference Result 21829 states and 36089 transitions.
[2023-12-25 22:45:30,428 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2023-12-25 22:45:30,429 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 730.6) internal successors, (3653), 5 states have internal predecessors, (3653), 0 states have call successors, (0), 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 4000
[2023-12-25 22:45:30,432 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 22:45:30,443 INFO  L225             Difference]: With dead ends: 21829
[2023-12-25 22:45:30,443 INFO  L226             Difference]: Without dead ends: 11379
[2023-12-25 22:45:30,451 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 7999 GetRequests, 7990 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 22:45:30,451 INFO  L413           NwaCegarLoop]: 14881 mSDtfsCounter, 23059 mSDsluCounter, 14411 mSDsCounter, 0 mSdLazyCounter, 6791 mSolverCounterSat, 453 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23059 SdHoareTripleChecker+Valid, 29292 SdHoareTripleChecker+Invalid, 7244 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 453 IncrementalHoareTripleChecker+Valid, 6791 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time
[2023-12-25 22:45:30,451 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [23059 Valid, 29292 Invalid, 7244 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [453 Valid, 6791 Invalid, 0 Unknown, 0 Unchecked, 4.9s Time]
[2023-12-25 22:45:30,458 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 11379 states.
[2023-12-25 22:45:30,507 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 11379 to 6189.
[2023-12-25 22:45:30,511 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 6189 states, 6188 states have (on average 1.6611182934712347) internal successors, (10279), 6188 states have internal predecessors, (10279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:45:30,516 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 6189 states to 6189 states and 10279 transitions.
[2023-12-25 22:45:30,516 INFO  L78                 Accepts]: Start accepts. Automaton has 6189 states and 10279 transitions. Word has length 4000
[2023-12-25 22:45:30,518 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 22:45:30,518 INFO  L495      AbstractCegarLoop]: Abstraction has 6189 states and 10279 transitions.
[2023-12-25 22:45:30,518 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 730.6) internal successors, (3653), 5 states have internal predecessors, (3653), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:45:30,518 INFO  L276                IsEmpty]: Start isEmpty. Operand 6189 states and 10279 transitions.
[2023-12-25 22:45:30,600 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 4002
[2023-12-25 22:45:30,600 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 22:45:30,601 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 22:45:30,645 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Ended with exit code 0
[2023-12-25 22:45:30,801 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38
[2023-12-25 22:45:30,801 INFO  L420      AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 22:45:30,802 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 22:45:30,802 INFO  L85        PathProgramCache]: Analyzing trace with hash 656268297, now seen corresponding path program 1 times
[2023-12-25 22:45:30,802 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 22:45:30,802 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1559346793]
[2023-12-25 22:45:30,802 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:45:30,803 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 22:45:31,030 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 22:45:31,030 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2059238671]
[2023-12-25 22:45:31,031 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:45:31,031 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 22:45:31,031 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 22:45:31,032 INFO  L229       MonitoredProcess]: Starting monitored process 37 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-25 22:45:31,032 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process
[2023-12-25 22:45:35,083 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 22:45:35,180 INFO  L262         TraceCheckSpWp]: Trace formula consists of 17753 conjuncts, 17 conjunts are in the unsatisfiable core
[2023-12-25 22:45:35,215 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 22:45:35,726 INFO  L134       CoverageAnalysis]: Checked inductivity of 448 backedges. 100 proven. 348 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-25 22:45:35,726 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-12-25 22:45:35,935 INFO  L134       CoverageAnalysis]: Checked inductivity of 448 backedges. 104 proven. 0 refuted. 0 times theorem prover too weak. 344 trivial. 0 not checked.
[2023-12-25 22:45:35,936 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 22:45:35,936 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1559346793]
[2023-12-25 22:45:35,936 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 22:45:35,936 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2059238671]
[2023-12-25 22:45:35,936 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [2059238671] provided 1 perfect and 1 imperfect interpolant sequences
[2023-12-25 22:45:35,936 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2023-12-25 22:45:35,937 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10
[2023-12-25 22:45:35,937 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1898359582]
[2023-12-25 22:45:35,937 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 22:45:35,940 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-12-25 22:45:35,940 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 22:45:35,943 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-12-25 22:45:35,943 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90
[2023-12-25 22:45:35,944 INFO  L87              Difference]: Start difference. First operand 6189 states and 10279 transitions. Second operand  has 5 states, 5 states have (on average 731.6) internal successors, (3658), 5 states have internal predecessors, (3658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:45:41,161 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 22:45:41,161 INFO  L93              Difference]: Finished difference Result 21856 states and 36128 transitions.
[2023-12-25 22:45:41,161 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2023-12-25 22:45:41,162 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 731.6) internal successors, (3658), 5 states have internal predecessors, (3658), 0 states have call successors, (0), 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 4001
[2023-12-25 22:45:41,165 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 22:45:41,175 INFO  L225             Difference]: With dead ends: 21856
[2023-12-25 22:45:41,175 INFO  L226             Difference]: Without dead ends: 11383
[2023-12-25 22:45:41,183 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 8001 GetRequests, 7992 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 22:45:41,183 INFO  L413           NwaCegarLoop]: 14868 mSDtfsCounter, 23046 mSDsluCounter, 14405 mSDsCounter, 0 mSdLazyCounter, 6787 mSolverCounterSat, 453 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23046 SdHoareTripleChecker+Valid, 29273 SdHoareTripleChecker+Invalid, 7240 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 453 IncrementalHoareTripleChecker+Valid, 6787 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time
[2023-12-25 22:45:41,183 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [23046 Valid, 29273 Invalid, 7240 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [453 Valid, 6787 Invalid, 0 Unknown, 0 Unchecked, 4.9s Time]
[2023-12-25 22:45:41,191 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 11383 states.
[2023-12-25 22:45:41,243 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 11383 to 6194.
[2023-12-25 22:45:41,247 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 6194 states, 6193 states have (on average 1.6609074761827871) internal successors, (10286), 6193 states have internal predecessors, (10286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:45:41,252 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 6194 states to 6194 states and 10286 transitions.
[2023-12-25 22:45:41,252 INFO  L78                 Accepts]: Start accepts. Automaton has 6194 states and 10286 transitions. Word has length 4001
[2023-12-25 22:45:41,254 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 22:45:41,254 INFO  L495      AbstractCegarLoop]: Abstraction has 6194 states and 10286 transitions.
[2023-12-25 22:45:41,255 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 731.6) internal successors, (3658), 5 states have internal predecessors, (3658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:45:41,255 INFO  L276                IsEmpty]: Start isEmpty. Operand 6194 states and 10286 transitions.
[2023-12-25 22:45:41,336 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 4003
[2023-12-25 22:45:41,336 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 22:45:41,337 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 22:45:41,387 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Forceful destruction successful, exit code 0
[2023-12-25 22:45:41,538 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39
[2023-12-25 22:45:41,538 INFO  L420      AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 22:45:41,538 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 22:45:41,539 INFO  L85        PathProgramCache]: Analyzing trace with hash 934748975, now seen corresponding path program 1 times
[2023-12-25 22:45:41,539 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 22:45:41,539 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [258699185]
[2023-12-25 22:45:41,539 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:45:41,539 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 22:45:41,775 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 22:45:41,775 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1310659106]
[2023-12-25 22:45:41,776 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:45:41,776 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 22:45:41,776 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 22:45:41,777 INFO  L229       MonitoredProcess]: Starting monitored process 38 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-25 22:45:41,778 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process
[2023-12-25 22:45:45,769 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 22:45:45,869 INFO  L262         TraceCheckSpWp]: Trace formula consists of 17757 conjuncts, 17 conjunts are in the unsatisfiable core
[2023-12-25 22:45:45,904 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 22:45:46,409 INFO  L134       CoverageAnalysis]: Checked inductivity of 448 backedges. 104 proven. 344 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-25 22:45:46,410 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-12-25 22:45:46,602 INFO  L134       CoverageAnalysis]: Checked inductivity of 448 backedges. 108 proven. 0 refuted. 0 times theorem prover too weak. 340 trivial. 0 not checked.
[2023-12-25 22:45:46,602 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 22:45:46,603 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [258699185]
[2023-12-25 22:45:46,603 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 22:45:46,603 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1310659106]
[2023-12-25 22:45:46,603 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1310659106] provided 1 perfect and 1 imperfect interpolant sequences
[2023-12-25 22:45:46,603 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2023-12-25 22:45:46,603 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10
[2023-12-25 22:45:46,604 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1553825529]
[2023-12-25 22:45:46,604 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 22:45:46,605 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-12-25 22:45:46,605 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 22:45:46,607 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-12-25 22:45:46,607 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90
[2023-12-25 22:45:46,607 INFO  L87              Difference]: Start difference. First operand 6194 states and 10286 transitions. Second operand  has 5 states, 5 states have (on average 732.6) internal successors, (3663), 5 states have internal predecessors, (3663), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:45:52,363 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 22:45:52,363 INFO  L93              Difference]: Finished difference Result 21880 states and 36162 transitions.
[2023-12-25 22:45:52,363 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2023-12-25 22:45:52,364 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 732.6) internal successors, (3663), 5 states have internal predecessors, (3663), 0 states have call successors, (0), 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 4002
[2023-12-25 22:45:52,366 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 22:45:52,376 INFO  L225             Difference]: With dead ends: 21880
[2023-12-25 22:45:52,376 INFO  L226             Difference]: Without dead ends: 11387
[2023-12-25 22:45:52,383 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 8003 GetRequests, 7994 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 22:45:52,384 INFO  L413           NwaCegarLoop]: 14855 mSDtfsCounter, 15854 mSDsluCounter, 21187 mSDsCounter, 0 mSdLazyCounter, 8599 mSolverCounterSat, 453 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15854 SdHoareTripleChecker+Valid, 36042 SdHoareTripleChecker+Invalid, 9052 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 453 IncrementalHoareTripleChecker+Valid, 8599 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.5s IncrementalHoareTripleChecker+Time
[2023-12-25 22:45:52,384 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [15854 Valid, 36042 Invalid, 9052 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [453 Valid, 8599 Invalid, 0 Unknown, 0 Unchecked, 5.5s Time]
[2023-12-25 22:45:52,392 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 11387 states.
[2023-12-25 22:45:52,440 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 11387 to 6199.
[2023-12-25 22:45:52,444 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 6199 states, 6198 states have (on average 1.6606969990319458) internal successors, (10293), 6198 states have internal predecessors, (10293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:45:52,448 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 6199 states to 6199 states and 10293 transitions.
[2023-12-25 22:45:52,449 INFO  L78                 Accepts]: Start accepts. Automaton has 6199 states and 10293 transitions. Word has length 4002
[2023-12-25 22:45:52,450 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 22:45:52,450 INFO  L495      AbstractCegarLoop]: Abstraction has 6199 states and 10293 transitions.
[2023-12-25 22:45:52,451 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 732.6) internal successors, (3663), 5 states have internal predecessors, (3663), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:45:52,451 INFO  L276                IsEmpty]: Start isEmpty. Operand 6199 states and 10293 transitions.
[2023-12-25 22:45:52,534 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 4004
[2023-12-25 22:45:52,534 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 22:45:52,535 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 22:45:52,580 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Ended with exit code 0
[2023-12-25 22:45:52,737 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,38 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 22:45:52,738 INFO  L420      AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 22:45:52,738 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 22:45:52,738 INFO  L85        PathProgramCache]: Analyzing trace with hash -1302063877, now seen corresponding path program 1 times
[2023-12-25 22:45:52,738 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 22:45:52,738 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1445234734]
[2023-12-25 22:45:52,739 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:45:52,739 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 22:45:52,979 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 22:45:52,980 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1719207513]
[2023-12-25 22:45:52,981 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:45:52,981 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 22:45:52,981 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 22:45:52,982 INFO  L229       MonitoredProcess]: Starting monitored process 39 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-25 22:45:52,983 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process
[2023-12-25 22:45:57,001 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 22:45:57,104 INFO  L262         TraceCheckSpWp]: Trace formula consists of 17760 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-12-25 22:45:57,138 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 22:45:57,652 INFO  L134       CoverageAnalysis]: Checked inductivity of 448 backedges. 108 proven. 340 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-25 22:45:57,652 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-12-25 22:45:57,884 INFO  L134       CoverageAnalysis]: Checked inductivity of 448 backedges. 112 proven. 0 refuted. 0 times theorem prover too weak. 336 trivial. 0 not checked.
[2023-12-25 22:45:57,885 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 22:45:57,885 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1445234734]
[2023-12-25 22:45:57,885 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 22:45:57,885 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1719207513]
[2023-12-25 22:45:57,885 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1719207513] provided 1 perfect and 1 imperfect interpolant sequences
[2023-12-25 22:45:57,885 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2023-12-25 22:45:57,886 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8] total 12
[2023-12-25 22:45:57,886 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [929983296]
[2023-12-25 22:45:57,886 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 22:45:57,888 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2023-12-25 22:45:57,888 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 22:45:57,889 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2023-12-25 22:45:57,890 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132
[2023-12-25 22:45:57,890 INFO  L87              Difference]: Start difference. First operand 6199 states and 10293 transitions. Second operand  has 6 states, 6 states have (on average 611.3333333333334) internal successors, (3668), 6 states have internal predecessors, (3668), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:46:08,700 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 22:46:08,701 INFO  L93              Difference]: Finished difference Result 27399 states and 45315 transitions.
[2023-12-25 22:46:08,701 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. 
[2023-12-25 22:46:08,702 INFO  L78                 Accepts]: Start accepts. Automaton has  has 6 states, 6 states have (on average 611.3333333333334) internal successors, (3668), 6 states have internal predecessors, (3668), 0 states have call successors, (0), 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 4003
[2023-12-25 22:46:08,704 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 22:46:08,866 INFO  L225             Difference]: With dead ends: 27399
[2023-12-25 22:46:08,866 INFO  L226             Difference]: Without dead ends: 16886
[2023-12-25 22:46:08,871 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 8007 GetRequests, 7994 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210
[2023-12-25 22:46:08,872 INFO  L413           NwaCegarLoop]: 14845 mSDtfsCounter, 24520 mSDsluCounter, 49806 mSDsCounter, 0 mSdLazyCounter, 18592 mSolverCounterSat, 456 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24520 SdHoareTripleChecker+Valid, 64651 SdHoareTripleChecker+Invalid, 19048 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 456 IncrementalHoareTripleChecker+Valid, 18592 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.3s IncrementalHoareTripleChecker+Time
[2023-12-25 22:46:08,872 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [24520 Valid, 64651 Invalid, 19048 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [456 Valid, 18592 Invalid, 0 Unknown, 0 Unchecked, 10.3s Time]
[2023-12-25 22:46:08,880 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 16886 states.
[2023-12-25 22:46:08,935 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 16886 to 6204.
[2023-12-25 22:46:08,939 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 6204 states, 6203 states have (on average 1.6604868611961954) internal successors, (10300), 6203 states have internal predecessors, (10300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:46:08,944 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 6204 states to 6204 states and 10300 transitions.
[2023-12-25 22:46:08,945 INFO  L78                 Accepts]: Start accepts. Automaton has 6204 states and 10300 transitions. Word has length 4003
[2023-12-25 22:46:08,946 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 22:46:08,947 INFO  L495      AbstractCegarLoop]: Abstraction has 6204 states and 10300 transitions.
[2023-12-25 22:46:08,947 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 6 states, 6 states have (on average 611.3333333333334) internal successors, (3668), 6 states have internal predecessors, (3668), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:46:08,947 INFO  L276                IsEmpty]: Start isEmpty. Operand 6204 states and 10300 transitions.
[2023-12-25 22:46:09,029 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 4005
[2023-12-25 22:46:09,029 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 22:46:09,030 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 22:46:09,080 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Forceful destruction successful, exit code 0
[2023-12-25 22:46:09,230 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable41
[2023-12-25 22:46:09,231 INFO  L420      AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 22:46:09,231 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 22:46:09,232 INFO  L85        PathProgramCache]: Analyzing trace with hash -1394482631, now seen corresponding path program 1 times
[2023-12-25 22:46:09,232 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 22:46:09,232 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [109034446]
[2023-12-25 22:46:09,232 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:46:09,232 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 22:46:09,480 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 22:46:09,481 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [677782233]
[2023-12-25 22:46:09,482 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:46:09,482 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 22:46:09,482 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 22:46:09,483 INFO  L229       MonitoredProcess]: Starting monitored process 40 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-25 22:46:09,486 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process
[2023-12-25 22:46:13,414 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 22:46:13,528 INFO  L262         TraceCheckSpWp]: Trace formula consists of 17764 conjuncts, 17 conjunts are in the unsatisfiable core
[2023-12-25 22:46:13,568 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 22:46:14,078 INFO  L134       CoverageAnalysis]: Checked inductivity of 448 backedges. 112 proven. 336 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-25 22:46:14,078 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-12-25 22:46:14,277 INFO  L134       CoverageAnalysis]: Checked inductivity of 448 backedges. 116 proven. 0 refuted. 0 times theorem prover too weak. 332 trivial. 0 not checked.
[2023-12-25 22:46:14,277 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 22:46:14,277 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [109034446]
[2023-12-25 22:46:14,278 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 22:46:14,278 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [677782233]
[2023-12-25 22:46:14,278 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [677782233] provided 1 perfect and 1 imperfect interpolant sequences
[2023-12-25 22:46:14,278 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2023-12-25 22:46:14,278 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10
[2023-12-25 22:46:14,278 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1871019618]
[2023-12-25 22:46:14,279 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 22:46:14,281 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-12-25 22:46:14,281 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 22:46:14,282 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-12-25 22:46:14,282 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90
[2023-12-25 22:46:14,283 INFO  L87              Difference]: Start difference. First operand 6204 states and 10300 transitions. Second operand  has 5 states, 5 states have (on average 734.6) internal successors, (3673), 5 states have internal predecessors, (3673), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:46:19,613 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 22:46:19,613 INFO  L93              Difference]: Finished difference Result 21928 states and 36230 transitions.
[2023-12-25 22:46:19,613 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2023-12-25 22:46:19,614 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 734.6) internal successors, (3673), 5 states have internal predecessors, (3673), 0 states have call successors, (0), 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 4004
[2023-12-25 22:46:19,617 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 22:46:19,625 INFO  L225             Difference]: With dead ends: 21928
[2023-12-25 22:46:19,625 INFO  L226             Difference]: Without dead ends: 11395
[2023-12-25 22:46:19,629 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 8007 GetRequests, 7998 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 22:46:19,630 INFO  L413           NwaCegarLoop]: 14829 mSDtfsCounter, 23007 mSDsluCounter, 14387 mSDsCounter, 0 mSdLazyCounter, 6775 mSolverCounterSat, 453 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23007 SdHoareTripleChecker+Valid, 29216 SdHoareTripleChecker+Invalid, 7228 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 453 IncrementalHoareTripleChecker+Valid, 6775 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time
[2023-12-25 22:46:19,630 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [23007 Valid, 29216 Invalid, 7228 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [453 Valid, 6775 Invalid, 0 Unknown, 0 Unchecked, 5.1s Time]
[2023-12-25 22:46:19,637 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 11395 states.
[2023-12-25 22:46:19,692 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 11395 to 6209.
[2023-12-25 22:46:19,696 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 6209 states, 6208 states have (on average 1.6602770618556701) internal successors, (10307), 6208 states have internal predecessors, (10307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:46:19,702 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 6209 states to 6209 states and 10307 transitions.
[2023-12-25 22:46:19,703 INFO  L78                 Accepts]: Start accepts. Automaton has 6209 states and 10307 transitions. Word has length 4004
[2023-12-25 22:46:19,705 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 22:46:19,705 INFO  L495      AbstractCegarLoop]: Abstraction has 6209 states and 10307 transitions.
[2023-12-25 22:46:19,705 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 734.6) internal successors, (3673), 5 states have internal predecessors, (3673), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:46:19,705 INFO  L276                IsEmpty]: Start isEmpty. Operand 6209 states and 10307 transitions.
[2023-12-25 22:46:19,789 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 4006
[2023-12-25 22:46:19,789 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 22:46:19,790 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 22:46:19,842 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Forceful destruction successful, exit code 0
[2023-12-25 22:46:19,990 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable42
[2023-12-25 22:46:19,991 INFO  L420      AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 22:46:19,991 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 22:46:19,991 INFO  L85        PathProgramCache]: Analyzing trace with hash -649266579, now seen corresponding path program 1 times
[2023-12-25 22:46:19,991 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 22:46:19,992 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1978622758]
[2023-12-25 22:46:19,992 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:46:19,992 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 22:46:20,234 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 22:46:20,235 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1743274901]
[2023-12-25 22:46:20,235 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:46:20,236 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 22:46:20,236 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 22:46:20,236 INFO  L229       MonitoredProcess]: Starting monitored process 41 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-25 22:46:20,238 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Waiting until timeout for monitored process
[2023-12-25 22:46:24,210 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 22:46:24,324 INFO  L262         TraceCheckSpWp]: Trace formula consists of 17767 conjuncts, 17 conjunts are in the unsatisfiable core
[2023-12-25 22:46:24,362 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 22:46:24,866 INFO  L134       CoverageAnalysis]: Checked inductivity of 448 backedges. 116 proven. 332 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-25 22:46:24,867 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-12-25 22:46:25,069 INFO  L134       CoverageAnalysis]: Checked inductivity of 448 backedges. 120 proven. 0 refuted. 0 times theorem prover too weak. 328 trivial. 0 not checked.
[2023-12-25 22:46:25,069 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 22:46:25,070 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1978622758]
[2023-12-25 22:46:25,070 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 22:46:25,070 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1743274901]
[2023-12-25 22:46:25,070 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1743274901] provided 1 perfect and 1 imperfect interpolant sequences
[2023-12-25 22:46:25,070 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2023-12-25 22:46:25,071 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10
[2023-12-25 22:46:25,071 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [13360236]
[2023-12-25 22:46:25,071 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 22:46:25,073 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-12-25 22:46:25,073 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 22:46:25,075 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-12-25 22:46:25,075 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90
[2023-12-25 22:46:25,076 INFO  L87              Difference]: Start difference. First operand 6209 states and 10307 transitions. Second operand  has 5 states, 5 states have (on average 735.6) internal successors, (3678), 5 states have internal predecessors, (3678), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:46:31,067 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 22:46:31,068 INFO  L93              Difference]: Finished difference Result 21952 states and 36264 transitions.
[2023-12-25 22:46:31,068 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2023-12-25 22:46:31,069 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 735.6) internal successors, (3678), 5 states have internal predecessors, (3678), 0 states have call successors, (0), 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 4005
[2023-12-25 22:46:31,072 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 22:46:31,239 INFO  L225             Difference]: With dead ends: 21952
[2023-12-25 22:46:31,240 INFO  L226             Difference]: Without dead ends: 11399
[2023-12-25 22:46:31,244 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 8009 GetRequests, 8000 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 22:46:31,244 INFO  L413           NwaCegarLoop]: 14816 mSDtfsCounter, 15794 mSDsluCounter, 21733 mSDsCounter, 0 mSdLazyCounter, 9267 mSolverCounterSat, 453 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15794 SdHoareTripleChecker+Valid, 36549 SdHoareTripleChecker+Invalid, 9720 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 453 IncrementalHoareTripleChecker+Valid, 9267 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.7s IncrementalHoareTripleChecker+Time
[2023-12-25 22:46:31,245 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [15794 Valid, 36549 Invalid, 9720 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [453 Valid, 9267 Invalid, 0 Unknown, 0 Unchecked, 5.7s Time]
[2023-12-25 22:46:31,253 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 11399 states.
[2023-12-25 22:46:31,305 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 11399 to 6214.
[2023-12-25 22:46:31,309 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 6214 states, 6213 states have (on average 1.6600676001931434) internal successors, (10314), 6213 states have internal predecessors, (10314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:46:31,315 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 6214 states to 6214 states and 10314 transitions.
[2023-12-25 22:46:31,316 INFO  L78                 Accepts]: Start accepts. Automaton has 6214 states and 10314 transitions. Word has length 4005
[2023-12-25 22:46:31,318 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 22:46:31,318 INFO  L495      AbstractCegarLoop]: Abstraction has 6214 states and 10314 transitions.
[2023-12-25 22:46:31,318 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 735.6) internal successors, (3678), 5 states have internal predecessors, (3678), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:46:31,318 INFO  L276                IsEmpty]: Start isEmpty. Operand 6214 states and 10314 transitions.
[2023-12-25 22:46:31,400 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 4007
[2023-12-25 22:46:31,401 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 22:46:31,401 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 22:46:31,457 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Ended with exit code 0
[2023-12-25 22:46:31,602 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable43
[2023-12-25 22:46:31,602 INFO  L420      AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 22:46:31,602 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 22:46:31,603 INFO  L85        PathProgramCache]: Analyzing trace with hash 1861716419, now seen corresponding path program 1 times
[2023-12-25 22:46:31,603 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 22:46:31,603 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1630302179]
[2023-12-25 22:46:31,603 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:46:31,603 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 22:46:31,857 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 22:46:31,858 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [370065804]
[2023-12-25 22:46:31,859 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:46:31,859 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 22:46:31,859 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 22:46:31,860 INFO  L229       MonitoredProcess]: Starting monitored process 42 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-25 22:46:31,861 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Waiting until timeout for monitored process
[2023-12-25 22:46:35,835 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 22:46:35,942 INFO  L262         TraceCheckSpWp]: Trace formula consists of 17771 conjuncts, 17 conjunts are in the unsatisfiable core
[2023-12-25 22:46:35,985 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 22:46:36,491 INFO  L134       CoverageAnalysis]: Checked inductivity of 448 backedges. 120 proven. 328 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-25 22:46:36,491 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-12-25 22:46:36,718 INFO  L134       CoverageAnalysis]: Checked inductivity of 448 backedges. 124 proven. 0 refuted. 0 times theorem prover too weak. 324 trivial. 0 not checked.
[2023-12-25 22:46:36,718 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 22:46:36,718 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1630302179]
[2023-12-25 22:46:36,718 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 22:46:36,718 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [370065804]
[2023-12-25 22:46:36,718 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [370065804] provided 1 perfect and 1 imperfect interpolant sequences
[2023-12-25 22:46:36,718 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2023-12-25 22:46:36,719 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10
[2023-12-25 22:46:36,719 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [728635950]
[2023-12-25 22:46:36,719 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 22:46:36,721 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-12-25 22:46:36,721 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 22:46:36,723 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-12-25 22:46:36,723 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90
[2023-12-25 22:46:36,723 INFO  L87              Difference]: Start difference. First operand 6214 states and 10314 transitions. Second operand  has 5 states, 5 states have (on average 736.6) internal successors, (3683), 5 states have internal predecessors, (3683), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:46:42,058 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 22:46:42,058 INFO  L93              Difference]: Finished difference Result 21976 states and 36298 transitions.
[2023-12-25 22:46:42,058 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2023-12-25 22:46:42,059 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 736.6) internal successors, (3683), 5 states have internal predecessors, (3683), 0 states have call successors, (0), 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 4006
[2023-12-25 22:46:42,062 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 22:46:42,068 INFO  L225             Difference]: With dead ends: 21976
[2023-12-25 22:46:42,068 INFO  L226             Difference]: Without dead ends: 11403
[2023-12-25 22:46:42,071 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 8011 GetRequests, 8002 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 22:46:42,071 INFO  L413           NwaCegarLoop]: 14803 mSDtfsCounter, 23021 mSDsluCounter, 14374 mSDsCounter, 0 mSdLazyCounter, 6767 mSolverCounterSat, 453 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23021 SdHoareTripleChecker+Valid, 29177 SdHoareTripleChecker+Invalid, 7220 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 453 IncrementalHoareTripleChecker+Valid, 6767 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time
[2023-12-25 22:46:42,072 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [23021 Valid, 29177 Invalid, 7220 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [453 Valid, 6767 Invalid, 0 Unknown, 0 Unchecked, 4.9s Time]
[2023-12-25 22:46:42,077 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 11403 states.
[2023-12-25 22:46:42,118 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 11403 to 6219.
[2023-12-25 22:46:42,122 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 6219 states, 6218 states have (on average 1.6598584753940173) internal successors, (10321), 6218 states have internal predecessors, (10321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:46:42,127 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 6219 states to 6219 states and 10321 transitions.
[2023-12-25 22:46:42,127 INFO  L78                 Accepts]: Start accepts. Automaton has 6219 states and 10321 transitions. Word has length 4006
[2023-12-25 22:46:42,128 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 22:46:42,128 INFO  L495      AbstractCegarLoop]: Abstraction has 6219 states and 10321 transitions.
[2023-12-25 22:46:42,129 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 736.6) internal successors, (3683), 5 states have internal predecessors, (3683), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:46:42,129 INFO  L276                IsEmpty]: Start isEmpty. Operand 6219 states and 10321 transitions.
[2023-12-25 22:46:42,210 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 4008
[2023-12-25 22:46:42,210 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 22:46:42,211 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 22:46:42,257 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Forceful destruction successful, exit code 0
[2023-12-25 22:46:42,411 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44,42 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 22:46:42,412 INFO  L420      AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 22:46:42,412 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 22:46:42,412 INFO  L85        PathProgramCache]: Analyzing trace with hash 2091527263, now seen corresponding path program 1 times
[2023-12-25 22:46:42,412 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 22:46:42,412 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [180300222]
[2023-12-25 22:46:42,413 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:46:42,413 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 22:46:42,655 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 22:46:42,656 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [714667298]
[2023-12-25 22:46:42,657 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:46:42,657 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 22:46:42,657 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 22:46:42,658 INFO  L229       MonitoredProcess]: Starting monitored process 43 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-25 22:46:42,659 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Waiting until timeout for monitored process
[2023-12-25 22:46:46,548 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 22:46:46,661 INFO  L262         TraceCheckSpWp]: Trace formula consists of 17774 conjuncts, 17 conjunts are in the unsatisfiable core
[2023-12-25 22:46:46,700 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 22:46:47,206 INFO  L134       CoverageAnalysis]: Checked inductivity of 448 backedges. 124 proven. 324 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-25 22:46:47,207 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-12-25 22:46:47,422 INFO  L134       CoverageAnalysis]: Checked inductivity of 448 backedges. 128 proven. 0 refuted. 0 times theorem prover too weak. 320 trivial. 0 not checked.
[2023-12-25 22:46:47,422 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 22:46:47,422 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [180300222]
[2023-12-25 22:46:47,422 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 22:46:47,422 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [714667298]
[2023-12-25 22:46:47,422 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [714667298] provided 1 perfect and 1 imperfect interpolant sequences
[2023-12-25 22:46:47,423 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2023-12-25 22:46:47,424 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10
[2023-12-25 22:46:47,424 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1255474226]
[2023-12-25 22:46:47,424 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 22:46:47,426 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-12-25 22:46:47,426 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 22:46:47,428 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-12-25 22:46:47,428 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90
[2023-12-25 22:46:47,428 INFO  L87              Difference]: Start difference. First operand 6219 states and 10321 transitions. Second operand  has 5 states, 5 states have (on average 737.6) internal successors, (3688), 5 states have internal predecessors, (3688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:46:52,745 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 22:46:52,745 INFO  L93              Difference]: Finished difference Result 22000 states and 36332 transitions.
[2023-12-25 22:46:52,745 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2023-12-25 22:46:52,746 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 737.6) internal successors, (3688), 5 states have internal predecessors, (3688), 0 states have call successors, (0), 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 4007
[2023-12-25 22:46:52,749 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 22:46:52,758 INFO  L225             Difference]: With dead ends: 22000
[2023-12-25 22:46:52,758 INFO  L226             Difference]: Without dead ends: 11407
[2023-12-25 22:46:52,764 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 8013 GetRequests, 8004 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 22:46:52,764 INFO  L413           NwaCegarLoop]: 14790 mSDtfsCounter, 23009 mSDsluCounter, 14368 mSDsCounter, 0 mSdLazyCounter, 6763 mSolverCounterSat, 453 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23009 SdHoareTripleChecker+Valid, 29158 SdHoareTripleChecker+Invalid, 7216 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 453 IncrementalHoareTripleChecker+Valid, 6763 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time
[2023-12-25 22:46:52,765 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [23009 Valid, 29158 Invalid, 7216 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [453 Valid, 6763 Invalid, 0 Unknown, 0 Unchecked, 5.1s Time]
[2023-12-25 22:46:52,773 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 11407 states.
[2023-12-25 22:46:52,831 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 11407 to 6224.
[2023-12-25 22:46:52,836 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 6224 states, 6223 states have (on average 1.659649686646312) internal successors, (10328), 6223 states have internal predecessors, (10328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:46:52,842 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 6224 states to 6224 states and 10328 transitions.
[2023-12-25 22:46:52,842 INFO  L78                 Accepts]: Start accepts. Automaton has 6224 states and 10328 transitions. Word has length 4007
[2023-12-25 22:46:52,844 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 22:46:52,844 INFO  L495      AbstractCegarLoop]: Abstraction has 6224 states and 10328 transitions.
[2023-12-25 22:46:52,845 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 737.6) internal successors, (3688), 5 states have internal predecessors, (3688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:46:52,845 INFO  L276                IsEmpty]: Start isEmpty. Operand 6224 states and 10328 transitions.
[2023-12-25 22:46:52,927 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 4009
[2023-12-25 22:46:52,928 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 22:46:52,928 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 22:46:52,978 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Forceful destruction successful, exit code 0
[2023-12-25 22:46:53,129 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45,43 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 22:46:53,129 INFO  L420      AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 22:46:53,130 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 22:46:53,130 INFO  L85        PathProgramCache]: Analyzing trace with hash 1222130125, now seen corresponding path program 1 times
[2023-12-25 22:46:53,130 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 22:46:53,130 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1449897117]
[2023-12-25 22:46:53,130 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:46:53,130 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 22:46:53,366 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 22:46:53,366 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1901393838]
[2023-12-25 22:46:53,367 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:46:53,367 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 22:46:53,367 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 22:46:53,368 INFO  L229       MonitoredProcess]: Starting monitored process 44 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-25 22:46:53,369 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Waiting until timeout for monitored process
[2023-12-25 22:46:57,516 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 22:46:57,616 INFO  L262         TraceCheckSpWp]: Trace formula consists of 17778 conjuncts, 17 conjunts are in the unsatisfiable core
[2023-12-25 22:46:57,649 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 22:46:58,172 INFO  L134       CoverageAnalysis]: Checked inductivity of 448 backedges. 128 proven. 320 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-25 22:46:58,173 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-12-25 22:46:58,391 INFO  L134       CoverageAnalysis]: Checked inductivity of 448 backedges. 132 proven. 0 refuted. 0 times theorem prover too weak. 316 trivial. 0 not checked.
[2023-12-25 22:46:58,391 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 22:46:58,391 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1449897117]
[2023-12-25 22:46:58,391 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 22:46:58,391 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1901393838]
[2023-12-25 22:46:58,391 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1901393838] provided 1 perfect and 1 imperfect interpolant sequences
[2023-12-25 22:46:58,391 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2023-12-25 22:46:58,392 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10
[2023-12-25 22:46:58,392 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [569710230]
[2023-12-25 22:46:58,392 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 22:46:58,394 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-12-25 22:46:58,394 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 22:46:58,396 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-12-25 22:46:58,396 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90
[2023-12-25 22:46:58,396 INFO  L87              Difference]: Start difference. First operand 6224 states and 10328 transitions. Second operand  has 5 states, 5 states have (on average 738.6) internal successors, (3693), 5 states have internal predecessors, (3693), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:47:03,571 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 22:47:03,572 INFO  L93              Difference]: Finished difference Result 22024 states and 36366 transitions.
[2023-12-25 22:47:03,572 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2023-12-25 22:47:03,573 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 738.6) internal successors, (3693), 5 states have internal predecessors, (3693), 0 states have call successors, (0), 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 4008
[2023-12-25 22:47:03,575 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 22:47:03,585 INFO  L225             Difference]: With dead ends: 22024
[2023-12-25 22:47:03,585 INFO  L226             Difference]: Without dead ends: 11411
[2023-12-25 22:47:03,593 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 8015 GetRequests, 8006 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 22:47:03,594 INFO  L413           NwaCegarLoop]: 14777 mSDtfsCounter, 22955 mSDsluCounter, 14363 mSDsCounter, 0 mSdLazyCounter, 6759 mSolverCounterSat, 453 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22955 SdHoareTripleChecker+Valid, 29140 SdHoareTripleChecker+Invalid, 7212 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 453 IncrementalHoareTripleChecker+Valid, 6759 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time
[2023-12-25 22:47:03,594 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [22955 Valid, 29140 Invalid, 7212 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [453 Valid, 6759 Invalid, 0 Unknown, 0 Unchecked, 4.9s Time]
[2023-12-25 22:47:03,601 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 11411 states.
[2023-12-25 22:47:03,655 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 11411 to 6229.
[2023-12-25 22:47:03,659 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 6229 states, 6228 states have (on average 1.6594412331406552) internal successors, (10335), 6228 states have internal predecessors, (10335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:47:03,664 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 6229 states to 6229 states and 10335 transitions.
[2023-12-25 22:47:03,664 INFO  L78                 Accepts]: Start accepts. Automaton has 6229 states and 10335 transitions. Word has length 4008
[2023-12-25 22:47:03,666 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 22:47:03,666 INFO  L495      AbstractCegarLoop]: Abstraction has 6229 states and 10335 transitions.
[2023-12-25 22:47:03,667 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 738.6) internal successors, (3693), 5 states have internal predecessors, (3693), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:47:03,667 INFO  L276                IsEmpty]: Start isEmpty. Operand 6229 states and 10335 transitions.
[2023-12-25 22:47:03,831 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 4010
[2023-12-25 22:47:03,831 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 22:47:03,832 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 22:47:03,886 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Forceful destruction successful, exit code 0
[2023-12-25 22:47:04,032 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable46
[2023-12-25 22:47:04,033 INFO  L420      AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 22:47:04,034 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 22:47:04,034 INFO  L85        PathProgramCache]: Analyzing trace with hash -1594537263, now seen corresponding path program 1 times
[2023-12-25 22:47:04,034 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 22:47:04,034 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2022016652]
[2023-12-25 22:47:04,035 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:47:04,035 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 22:47:04,268 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 22:47:04,268 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [313700910]
[2023-12-25 22:47:04,269 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:47:04,269 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 22:47:04,269 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 22:47:04,270 INFO  L229       MonitoredProcess]: Starting monitored process 45 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-25 22:47:04,271 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Waiting until timeout for monitored process
[2023-12-25 22:47:08,178 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 22:47:08,287 INFO  L262         TraceCheckSpWp]: Trace formula consists of 17781 conjuncts, 17 conjunts are in the unsatisfiable core
[2023-12-25 22:47:08,327 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 22:47:08,832 INFO  L134       CoverageAnalysis]: Checked inductivity of 448 backedges. 132 proven. 316 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-25 22:47:08,832 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-12-25 22:47:09,053 INFO  L134       CoverageAnalysis]: Checked inductivity of 448 backedges. 136 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked.
[2023-12-25 22:47:09,053 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 22:47:09,053 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2022016652]
[2023-12-25 22:47:09,053 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 22:47:09,053 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [313700910]
[2023-12-25 22:47:09,053 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [313700910] provided 1 perfect and 1 imperfect interpolant sequences
[2023-12-25 22:47:09,053 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2023-12-25 22:47:09,054 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10
[2023-12-25 22:47:09,054 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [10392402]
[2023-12-25 22:47:09,054 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 22:47:09,056 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-12-25 22:47:09,056 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 22:47:09,058 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-12-25 22:47:09,058 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90
[2023-12-25 22:47:09,058 INFO  L87              Difference]: Start difference. First operand 6229 states and 10335 transitions. Second operand  has 5 states, 5 states have (on average 739.6) internal successors, (3698), 5 states have internal predecessors, (3698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:47:14,274 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 22:47:14,275 INFO  L93              Difference]: Finished difference Result 22048 states and 36400 transitions.
[2023-12-25 22:47:14,275 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2023-12-25 22:47:14,276 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 739.6) internal successors, (3698), 5 states have internal predecessors, (3698), 0 states have call successors, (0), 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 4009
[2023-12-25 22:47:14,278 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 22:47:14,288 INFO  L225             Difference]: With dead ends: 22048
[2023-12-25 22:47:14,288 INFO  L226             Difference]: Without dead ends: 11415
[2023-12-25 22:47:14,296 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 8017 GetRequests, 8008 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 22:47:14,297 INFO  L413           NwaCegarLoop]: 14764 mSDtfsCounter, 22985 mSDsluCounter, 14356 mSDsCounter, 0 mSdLazyCounter, 6755 mSolverCounterSat, 453 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22985 SdHoareTripleChecker+Valid, 29120 SdHoareTripleChecker+Invalid, 7208 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 453 IncrementalHoareTripleChecker+Valid, 6755 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time
[2023-12-25 22:47:14,297 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [22985 Valid, 29120 Invalid, 7208 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [453 Valid, 6755 Invalid, 0 Unknown, 0 Unchecked, 4.9s Time]
[2023-12-25 22:47:14,304 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 11415 states.
[2023-12-25 22:47:14,357 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 11415 to 6234.
[2023-12-25 22:47:14,361 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 6234 states, 6233 states have (on average 1.6592331140702712) internal successors, (10342), 6233 states have internal predecessors, (10342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:47:14,366 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 6234 states to 6234 states and 10342 transitions.
[2023-12-25 22:47:14,366 INFO  L78                 Accepts]: Start accepts. Automaton has 6234 states and 10342 transitions. Word has length 4009
[2023-12-25 22:47:14,368 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 22:47:14,368 INFO  L495      AbstractCegarLoop]: Abstraction has 6234 states and 10342 transitions.
[2023-12-25 22:47:14,369 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 739.6) internal successors, (3698), 5 states have internal predecessors, (3698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:47:14,369 INFO  L276                IsEmpty]: Start isEmpty. Operand 6234 states and 10342 transitions.
[2023-12-25 22:47:14,451 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 4011
[2023-12-25 22:47:14,451 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 22:47:14,452 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 22:47:14,506 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Forceful destruction successful, exit code 0
[2023-12-25 22:47:14,652 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable47
[2023-12-25 22:47:14,653 INFO  L420      AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 22:47:14,653 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 22:47:14,653 INFO  L85        PathProgramCache]: Analyzing trace with hash -460582313, now seen corresponding path program 1 times
[2023-12-25 22:47:14,653 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 22:47:14,653 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1489887247]
[2023-12-25 22:47:14,654 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:47:14,654 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 22:47:14,907 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 22:47:14,908 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1039107383]
[2023-12-25 22:47:14,908 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:47:14,908 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 22:47:14,909 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 22:47:14,910 INFO  L229       MonitoredProcess]: Starting monitored process 46 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-25 22:47:14,911 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Waiting until timeout for monitored process
[2023-12-25 22:47:19,011 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 22:47:19,120 INFO  L262         TraceCheckSpWp]: Trace formula consists of 17785 conjuncts, 17 conjunts are in the unsatisfiable core
[2023-12-25 22:47:19,160 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 22:47:19,668 INFO  L134       CoverageAnalysis]: Checked inductivity of 448 backedges. 136 proven. 312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-25 22:47:19,668 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-12-25 22:47:19,894 INFO  L134       CoverageAnalysis]: Checked inductivity of 448 backedges. 140 proven. 0 refuted. 0 times theorem prover too weak. 308 trivial. 0 not checked.
[2023-12-25 22:47:19,895 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 22:47:19,895 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1489887247]
[2023-12-25 22:47:19,895 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 22:47:19,895 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1039107383]
[2023-12-25 22:47:19,895 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1039107383] provided 1 perfect and 1 imperfect interpolant sequences
[2023-12-25 22:47:19,895 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2023-12-25 22:47:19,896 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10
[2023-12-25 22:47:19,896 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [974428764]
[2023-12-25 22:47:19,896 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 22:47:19,898 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-12-25 22:47:19,898 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 22:47:19,900 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-12-25 22:47:19,900 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90
[2023-12-25 22:47:19,900 INFO  L87              Difference]: Start difference. First operand 6234 states and 10342 transitions. Second operand  has 5 states, 5 states have (on average 740.6) internal successors, (3703), 5 states have internal predecessors, (3703), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:47:25,064 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 22:47:25,064 INFO  L93              Difference]: Finished difference Result 22072 states and 36434 transitions.
[2023-12-25 22:47:25,064 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2023-12-25 22:47:25,065 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 740.6) internal successors, (3703), 5 states have internal predecessors, (3703), 0 states have call successors, (0), 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 4010
[2023-12-25 22:47:25,068 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 22:47:25,078 INFO  L225             Difference]: With dead ends: 22072
[2023-12-25 22:47:25,078 INFO  L226             Difference]: Without dead ends: 11419
[2023-12-25 22:47:25,086 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 8019 GetRequests, 8010 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 22:47:25,092 INFO  L413           NwaCegarLoop]: 14751 mSDtfsCounter, 22973 mSDsluCounter, 14350 mSDsCounter, 0 mSdLazyCounter, 6751 mSolverCounterSat, 453 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22973 SdHoareTripleChecker+Valid, 29101 SdHoareTripleChecker+Invalid, 7204 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 453 IncrementalHoareTripleChecker+Valid, 6751 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time
[2023-12-25 22:47:25,092 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [22973 Valid, 29101 Invalid, 7204 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [453 Valid, 6751 Invalid, 0 Unknown, 0 Unchecked, 4.9s Time]
[2023-12-25 22:47:25,103 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 11419 states.
[2023-12-25 22:47:25,169 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 11419 to 6239.
[2023-12-25 22:47:25,173 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 6239 states, 6238 states have (on average 1.6590253286309715) internal successors, (10349), 6238 states have internal predecessors, (10349), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:47:25,179 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 6239 states to 6239 states and 10349 transitions.
[2023-12-25 22:47:25,179 INFO  L78                 Accepts]: Start accepts. Automaton has 6239 states and 10349 transitions. Word has length 4010
[2023-12-25 22:47:25,181 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 22:47:25,181 INFO  L495      AbstractCegarLoop]: Abstraction has 6239 states and 10349 transitions.
[2023-12-25 22:47:25,182 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 740.6) internal successors, (3703), 5 states have internal predecessors, (3703), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:47:25,182 INFO  L276                IsEmpty]: Start isEmpty. Operand 6239 states and 10349 transitions.
[2023-12-25 22:47:25,362 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 4012
[2023-12-25 22:47:25,363 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 22:47:25,364 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 22:47:25,415 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Forceful destruction successful, exit code 0
[2023-12-25 22:47:25,564 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable48
[2023-12-25 22:47:25,565 INFO  L420      AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 22:47:25,565 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 22:47:25,566 INFO  L85        PathProgramCache]: Analyzing trace with hash 1884288451, now seen corresponding path program 1 times
[2023-12-25 22:47:25,566 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 22:47:25,566 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [166419236]
[2023-12-25 22:47:25,566 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:47:25,566 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 22:47:25,813 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 22:47:25,813 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [621009359]
[2023-12-25 22:47:25,814 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:47:25,814 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 22:47:25,814 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 22:47:25,815 INFO  L229       MonitoredProcess]: Starting monitored process 47 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-25 22:47:25,817 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Waiting until timeout for monitored process
[2023-12-25 22:47:29,729 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 22:47:29,838 INFO  L262         TraceCheckSpWp]: Trace formula consists of 17788 conjuncts, 17 conjunts are in the unsatisfiable core
[2023-12-25 22:47:29,877 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 22:47:30,381 INFO  L134       CoverageAnalysis]: Checked inductivity of 448 backedges. 140 proven. 308 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-25 22:47:30,381 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-12-25 22:47:30,611 INFO  L134       CoverageAnalysis]: Checked inductivity of 448 backedges. 144 proven. 0 refuted. 0 times theorem prover too weak. 304 trivial. 0 not checked.
[2023-12-25 22:47:30,612 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 22:47:30,612 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [166419236]
[2023-12-25 22:47:30,612 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 22:47:30,612 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [621009359]
[2023-12-25 22:47:30,612 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [621009359] provided 1 perfect and 1 imperfect interpolant sequences
[2023-12-25 22:47:30,612 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2023-12-25 22:47:30,613 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10
[2023-12-25 22:47:30,613 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1254731635]
[2023-12-25 22:47:30,613 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 22:47:30,615 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-12-25 22:47:30,615 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 22:47:30,616 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-12-25 22:47:30,616 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90
[2023-12-25 22:47:30,617 INFO  L87              Difference]: Start difference. First operand 6239 states and 10349 transitions. Second operand  has 5 states, 5 states have (on average 741.6) internal successors, (3708), 5 states have internal predecessors, (3708), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:47:36,576 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 22:47:36,576 INFO  L93              Difference]: Finished difference Result 22096 states and 36468 transitions.
[2023-12-25 22:47:36,576 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2023-12-25 22:47:36,577 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 741.6) internal successors, (3708), 5 states have internal predecessors, (3708), 0 states have call successors, (0), 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 4011
[2023-12-25 22:47:36,580 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 22:47:36,591 INFO  L225             Difference]: With dead ends: 22096
[2023-12-25 22:47:36,591 INFO  L226             Difference]: Without dead ends: 11423
[2023-12-25 22:47:36,600 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 8021 GetRequests, 8012 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 22:47:36,600 INFO  L413           NwaCegarLoop]: 14738 mSDtfsCounter, 15746 mSDsluCounter, 21661 mSDsCounter, 0 mSdLazyCounter, 9219 mSolverCounterSat, 453 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15746 SdHoareTripleChecker+Valid, 36399 SdHoareTripleChecker+Invalid, 9672 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 453 IncrementalHoareTripleChecker+Valid, 9219 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.7s IncrementalHoareTripleChecker+Time
[2023-12-25 22:47:36,600 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [15746 Valid, 36399 Invalid, 9672 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [453 Valid, 9219 Invalid, 0 Unknown, 0 Unchecked, 5.7s Time]
[2023-12-25 22:47:36,608 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 11423 states.
[2023-12-25 22:47:36,668 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 11423 to 6244.
[2023-12-25 22:47:36,673 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 6244 states, 6243 states have (on average 1.6588178760211436) internal successors, (10356), 6243 states have internal predecessors, (10356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:47:36,678 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 6244 states to 6244 states and 10356 transitions.
[2023-12-25 22:47:36,679 INFO  L78                 Accepts]: Start accepts. Automaton has 6244 states and 10356 transitions. Word has length 4011
[2023-12-25 22:47:36,681 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 22:47:36,681 INFO  L495      AbstractCegarLoop]: Abstraction has 6244 states and 10356 transitions.
[2023-12-25 22:47:36,681 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 741.6) internal successors, (3708), 5 states have internal predecessors, (3708), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:47:36,681 INFO  L276                IsEmpty]: Start isEmpty. Operand 6244 states and 10356 transitions.
[2023-12-25 22:47:36,841 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 4013
[2023-12-25 22:47:36,842 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 22:47:36,842 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 22:47:36,899 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Ended with exit code 0
[2023-12-25 22:47:37,043 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49,47 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 22:47:37,043 INFO  L420      AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 22:47:37,044 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 22:47:37,045 INFO  L85        PathProgramCache]: Analyzing trace with hash 88290145, now seen corresponding path program 1 times
[2023-12-25 22:47:37,045 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 22:47:37,045 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1352249446]
[2023-12-25 22:47:37,046 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:47:37,046 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 22:47:37,308 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 22:47:37,308 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1232372976]
[2023-12-25 22:47:37,309 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:47:37,309 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 22:47:37,309 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 22:47:37,310 INFO  L229       MonitoredProcess]: Starting monitored process 48 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-25 22:47:37,311 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Waiting until timeout for monitored process
[2023-12-25 22:47:41,223 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 22:47:41,321 INFO  L262         TraceCheckSpWp]: Trace formula consists of 17792 conjuncts, 17 conjunts are in the unsatisfiable core
[2023-12-25 22:47:41,356 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 22:47:41,861 INFO  L134       CoverageAnalysis]: Checked inductivity of 448 backedges. 144 proven. 304 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-25 22:47:41,861 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-12-25 22:47:42,098 INFO  L134       CoverageAnalysis]: Checked inductivity of 448 backedges. 148 proven. 0 refuted. 0 times theorem prover too weak. 300 trivial. 0 not checked.
[2023-12-25 22:47:42,098 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 22:47:42,098 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1352249446]
[2023-12-25 22:47:42,099 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 22:47:42,099 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1232372976]
[2023-12-25 22:47:42,099 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1232372976] provided 1 perfect and 1 imperfect interpolant sequences
[2023-12-25 22:47:42,099 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2023-12-25 22:47:42,099 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10
[2023-12-25 22:47:42,100 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [494075206]
[2023-12-25 22:47:42,100 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 22:47:42,101 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-12-25 22:47:42,102 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 22:47:42,103 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-12-25 22:47:42,103 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90
[2023-12-25 22:47:42,104 INFO  L87              Difference]: Start difference. First operand 6244 states and 10356 transitions. Second operand  has 5 states, 5 states have (on average 742.6) internal successors, (3713), 5 states have internal predecessors, (3713), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:47:48,053 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 22:47:48,054 INFO  L93              Difference]: Finished difference Result 22120 states and 36502 transitions.
[2023-12-25 22:47:48,054 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2023-12-25 22:47:48,055 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 742.6) internal successors, (3713), 5 states have internal predecessors, (3713), 0 states have call successors, (0), 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 4012
[2023-12-25 22:47:48,057 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 22:47:48,068 INFO  L225             Difference]: With dead ends: 22120
[2023-12-25 22:47:48,068 INFO  L226             Difference]: Without dead ends: 11427
[2023-12-25 22:47:48,076 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 8023 GetRequests, 8014 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 22:47:48,076 INFO  L413           NwaCegarLoop]: 14725 mSDtfsCounter, 15738 mSDsluCounter, 21649 mSDsCounter, 0 mSdLazyCounter, 9211 mSolverCounterSat, 453 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15738 SdHoareTripleChecker+Valid, 36374 SdHoareTripleChecker+Invalid, 9664 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 453 IncrementalHoareTripleChecker+Valid, 9211 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.7s IncrementalHoareTripleChecker+Time
[2023-12-25 22:47:48,076 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [15738 Valid, 36374 Invalid, 9664 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [453 Valid, 9211 Invalid, 0 Unknown, 0 Unchecked, 5.7s Time]
[2023-12-25 22:47:48,084 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 11427 states.
[2023-12-25 22:47:48,137 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 11427 to 6249.
[2023-12-25 22:47:48,140 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 6249 states, 6248 states have (on average 1.6586107554417413) internal successors, (10363), 6248 states have internal predecessors, (10363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:47:48,145 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 6249 states to 6249 states and 10363 transitions.
[2023-12-25 22:47:48,146 INFO  L78                 Accepts]: Start accepts. Automaton has 6249 states and 10363 transitions. Word has length 4012
[2023-12-25 22:47:48,147 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 22:47:48,147 INFO  L495      AbstractCegarLoop]: Abstraction has 6249 states and 10363 transitions.
[2023-12-25 22:47:48,148 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 742.6) internal successors, (3713), 5 states have internal predecessors, (3713), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:47:48,148 INFO  L276                IsEmpty]: Start isEmpty. Operand 6249 states and 10363 transitions.
[2023-12-25 22:47:48,317 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 4014
[2023-12-25 22:47:48,317 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 22:47:48,318 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 22:47:48,367 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Forceful destruction successful, exit code 0
[2023-12-25 22:47:48,518 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50,48 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 22:47:48,519 INFO  L420      AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 22:47:48,519 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 22:47:48,520 INFO  L85        PathProgramCache]: Analyzing trace with hash -1132212939, now seen corresponding path program 1 times
[2023-12-25 22:47:48,520 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 22:47:48,520 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [755541108]
[2023-12-25 22:47:48,520 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:47:48,520 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 22:47:48,759 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 22:47:48,759 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [234507226]
[2023-12-25 22:47:48,760 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:47:48,760 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 22:47:48,760 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 22:47:48,761 INFO  L229       MonitoredProcess]: Starting monitored process 49 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-25 22:47:48,762 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Waiting until timeout for monitored process
[2023-12-25 22:47:52,678 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 22:47:52,789 INFO  L262         TraceCheckSpWp]: Trace formula consists of 17795 conjuncts, 17 conjunts are in the unsatisfiable core
[2023-12-25 22:47:52,832 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 22:47:53,338 INFO  L134       CoverageAnalysis]: Checked inductivity of 448 backedges. 148 proven. 300 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-25 22:47:53,338 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-12-25 22:47:53,582 INFO  L134       CoverageAnalysis]: Checked inductivity of 448 backedges. 150 proven. 0 refuted. 0 times theorem prover too weak. 298 trivial. 0 not checked.
[2023-12-25 22:47:53,582 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 22:47:53,582 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [755541108]
[2023-12-25 22:47:53,582 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 22:47:53,582 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [234507226]
[2023-12-25 22:47:53,582 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [234507226] provided 1 perfect and 1 imperfect interpolant sequences
[2023-12-25 22:47:53,582 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2023-12-25 22:47:53,583 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10
[2023-12-25 22:47:53,583 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1255972897]
[2023-12-25 22:47:53,583 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 22:47:53,585 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-12-25 22:47:53,585 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 22:47:53,587 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-12-25 22:47:53,587 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90
[2023-12-25 22:47:53,587 INFO  L87              Difference]: Start difference. First operand 6249 states and 10363 transitions. Second operand  has 5 states, 5 states have (on average 743.2) internal successors, (3716), 5 states have internal predecessors, (3716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:47:58,742 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 22:47:58,742 INFO  L93              Difference]: Finished difference Result 22141 states and 36531 transitions.
[2023-12-25 22:47:58,742 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2023-12-25 22:47:58,743 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 743.2) internal successors, (3716), 5 states have internal predecessors, (3716), 0 states have call successors, (0), 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 4013
[2023-12-25 22:47:58,746 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 22:47:58,756 INFO  L225             Difference]: With dead ends: 22141
[2023-12-25 22:47:58,756 INFO  L226             Difference]: Without dead ends: 11428
[2023-12-25 22:47:58,763 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 8025 GetRequests, 8016 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 22:47:58,764 INFO  L413           NwaCegarLoop]: 14717 mSDtfsCounter, 22939 mSDsluCounter, 14333 mSDsCounter, 0 mSdLazyCounter, 6743 mSolverCounterSat, 453 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22939 SdHoareTripleChecker+Valid, 29050 SdHoareTripleChecker+Invalid, 7196 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 453 IncrementalHoareTripleChecker+Valid, 6743 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time
[2023-12-25 22:47:58,764 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [22939 Valid, 29050 Invalid, 7196 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [453 Valid, 6743 Invalid, 0 Unknown, 0 Unchecked, 4.9s Time]
[2023-12-25 22:47:58,772 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 11428 states.
[2023-12-25 22:47:58,826 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 11428 to 6251.
[2023-12-25 22:47:58,830 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 6251 states, 6250 states have (on average 1.6584) internal successors, (10365), 6250 states have internal predecessors, (10365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:47:58,835 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 6251 states to 6251 states and 10365 transitions.
[2023-12-25 22:47:58,835 INFO  L78                 Accepts]: Start accepts. Automaton has 6251 states and 10365 transitions. Word has length 4013
[2023-12-25 22:47:58,837 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 22:47:58,837 INFO  L495      AbstractCegarLoop]: Abstraction has 6251 states and 10365 transitions.
[2023-12-25 22:47:58,838 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 743.2) internal successors, (3716), 5 states have internal predecessors, (3716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:47:58,838 INFO  L276                IsEmpty]: Start isEmpty. Operand 6251 states and 10365 transitions.
[2023-12-25 22:47:58,920 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 4015
[2023-12-25 22:47:58,920 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 22:47:58,921 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 22:47:58,967 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Forceful destruction successful, exit code 0
[2023-12-25 22:47:59,121 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51,49 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 22:47:59,122 INFO  L420      AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 22:47:59,122 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 22:47:59,122 INFO  L85        PathProgramCache]: Analyzing trace with hash 1408148743, now seen corresponding path program 1 times
[2023-12-25 22:47:59,122 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 22:47:59,122 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1147498168]
[2023-12-25 22:47:59,123 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:47:59,123 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 22:47:59,427 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 22:47:59,428 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [839664714]
[2023-12-25 22:47:59,428 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:47:59,429 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 22:47:59,429 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 22:47:59,430 INFO  L229       MonitoredProcess]: Starting monitored process 50 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-25 22:47:59,430 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Waiting until timeout for monitored process
[2023-12-25 22:48:03,321 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 22:48:03,422 INFO  L262         TraceCheckSpWp]: Trace formula consists of 17798 conjuncts, 17 conjunts are in the unsatisfiable core
[2023-12-25 22:48:03,459 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 22:48:03,964 INFO  L134       CoverageAnalysis]: Checked inductivity of 448 backedges. 150 proven. 298 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-25 22:48:03,964 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-12-25 22:48:04,208 INFO  L134       CoverageAnalysis]: Checked inductivity of 448 backedges. 154 proven. 0 refuted. 0 times theorem prover too weak. 294 trivial. 0 not checked.
[2023-12-25 22:48:04,209 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 22:48:04,209 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1147498168]
[2023-12-25 22:48:04,209 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 22:48:04,209 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [839664714]
[2023-12-25 22:48:04,209 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [839664714] provided 1 perfect and 1 imperfect interpolant sequences
[2023-12-25 22:48:04,209 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2023-12-25 22:48:04,210 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10
[2023-12-25 22:48:04,210 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [746208621]
[2023-12-25 22:48:04,210 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 22:48:04,212 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-12-25 22:48:04,212 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 22:48:04,214 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-12-25 22:48:04,214 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90
[2023-12-25 22:48:04,214 INFO  L87              Difference]: Start difference. First operand 6251 states and 10365 transitions. Second operand  has 5 states, 5 states have (on average 744.2) internal successors, (3721), 5 states have internal predecessors, (3721), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:48:09,354 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 22:48:09,355 INFO  L93              Difference]: Finished difference Result 22152 states and 36544 transitions.
[2023-12-25 22:48:09,355 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2023-12-25 22:48:09,356 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 744.2) internal successors, (3721), 5 states have internal predecessors, (3721), 0 states have call successors, (0), 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 4014
[2023-12-25 22:48:09,358 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 22:48:09,367 INFO  L225             Difference]: With dead ends: 22152
[2023-12-25 22:48:09,367 INFO  L226             Difference]: Without dead ends: 11432
[2023-12-25 22:48:09,374 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 8027 GetRequests, 8018 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 22:48:09,375 INFO  L413           NwaCegarLoop]: 14704 mSDtfsCounter, 22929 mSDsluCounter, 14327 mSDsCounter, 0 mSdLazyCounter, 6739 mSolverCounterSat, 453 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22929 SdHoareTripleChecker+Valid, 29031 SdHoareTripleChecker+Invalid, 7192 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 453 IncrementalHoareTripleChecker+Valid, 6739 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time
[2023-12-25 22:48:09,375 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [22929 Valid, 29031 Invalid, 7192 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [453 Valid, 6739 Invalid, 0 Unknown, 0 Unchecked, 4.9s Time]
[2023-12-25 22:48:09,381 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 11432 states.
[2023-12-25 22:48:09,430 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 11432 to 6256.
[2023-12-25 22:48:09,434 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 6256 states, 6255 states have (on average 1.658193445243805) internal successors, (10372), 6255 states have internal predecessors, (10372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:48:09,439 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 6256 states to 6256 states and 10372 transitions.
[2023-12-25 22:48:09,439 INFO  L78                 Accepts]: Start accepts. Automaton has 6256 states and 10372 transitions. Word has length 4014
[2023-12-25 22:48:09,441 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 22:48:09,441 INFO  L495      AbstractCegarLoop]: Abstraction has 6256 states and 10372 transitions.
[2023-12-25 22:48:09,441 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 744.2) internal successors, (3721), 5 states have internal predecessors, (3721), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:48:09,441 INFO  L276                IsEmpty]: Start isEmpty. Operand 6256 states and 10372 transitions.
[2023-12-25 22:48:09,524 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 4016
[2023-12-25 22:48:09,524 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 22:48:09,525 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 22:48:09,571 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Forceful destruction successful, exit code 0
[2023-12-25 22:48:09,725 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 50 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable52
[2023-12-25 22:48:09,725 INFO  L420      AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 22:48:09,726 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 22:48:09,726 INFO  L85        PathProgramCache]: Analyzing trace with hash -920467671, now seen corresponding path program 1 times
[2023-12-25 22:48:09,726 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 22:48:09,726 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [391109645]
[2023-12-25 22:48:09,726 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:48:09,726 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 22:48:09,953 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 22:48:09,954 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1093692997]
[2023-12-25 22:48:09,954 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:48:09,954 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 22:48:09,955 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 22:48:09,955 INFO  L229       MonitoredProcess]: Starting monitored process 51 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-25 22:48:09,956 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Waiting until timeout for monitored process
[2023-12-25 22:48:13,960 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 22:48:14,059 INFO  L262         TraceCheckSpWp]: Trace formula consists of 17801 conjuncts, 17 conjunts are in the unsatisfiable core
[2023-12-25 22:48:14,092 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 22:48:14,598 INFO  L134       CoverageAnalysis]: Checked inductivity of 448 backedges. 154 proven. 294 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-25 22:48:14,598 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-12-25 22:48:14,845 INFO  L134       CoverageAnalysis]: Checked inductivity of 448 backedges. 158 proven. 0 refuted. 0 times theorem prover too weak. 290 trivial. 0 not checked.
[2023-12-25 22:48:14,846 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 22:48:14,846 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [391109645]
[2023-12-25 22:48:14,846 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 22:48:14,846 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1093692997]
[2023-12-25 22:48:14,846 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1093692997] provided 1 perfect and 1 imperfect interpolant sequences
[2023-12-25 22:48:14,846 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2023-12-25 22:48:14,847 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10
[2023-12-25 22:48:14,847 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1935738328]
[2023-12-25 22:48:14,847 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 22:48:14,849 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-12-25 22:48:14,849 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 22:48:14,850 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-12-25 22:48:14,850 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90
[2023-12-25 22:48:14,851 INFO  L87              Difference]: Start difference. First operand 6256 states and 10372 transitions. Second operand  has 5 states, 5 states have (on average 745.2) internal successors, (3726), 5 states have internal predecessors, (3726), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:48:20,791 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 22:48:20,791 INFO  L93              Difference]: Finished difference Result 22179 states and 36583 transitions.
[2023-12-25 22:48:20,791 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2023-12-25 22:48:20,792 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 745.2) internal successors, (3726), 5 states have internal predecessors, (3726), 0 states have call successors, (0), 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 4015
[2023-12-25 22:48:20,795 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 22:48:20,804 INFO  L225             Difference]: With dead ends: 22179
[2023-12-25 22:48:20,804 INFO  L226             Difference]: Without dead ends: 11436
[2023-12-25 22:48:20,812 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 8029 GetRequests, 8020 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 22:48:20,812 INFO  L413           NwaCegarLoop]: 14691 mSDtfsCounter, 15716 mSDsluCounter, 21615 mSDsCounter, 0 mSdLazyCounter, 9195 mSolverCounterSat, 453 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15716 SdHoareTripleChecker+Valid, 36306 SdHoareTripleChecker+Invalid, 9648 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 453 IncrementalHoareTripleChecker+Valid, 9195 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.7s IncrementalHoareTripleChecker+Time
[2023-12-25 22:48:20,812 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [15716 Valid, 36306 Invalid, 9648 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [453 Valid, 9195 Invalid, 0 Unknown, 0 Unchecked, 5.7s Time]
[2023-12-25 22:48:20,819 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 11436 states.
[2023-12-25 22:48:20,870 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 11436 to 6261.
[2023-12-25 22:48:20,874 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 6261 states, 6260 states have (on average 1.6579872204472843) internal successors, (10379), 6260 states have internal predecessors, (10379), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:48:20,879 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 6261 states to 6261 states and 10379 transitions.
[2023-12-25 22:48:20,879 INFO  L78                 Accepts]: Start accepts. Automaton has 6261 states and 10379 transitions. Word has length 4015
[2023-12-25 22:48:20,881 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 22:48:20,881 INFO  L495      AbstractCegarLoop]: Abstraction has 6261 states and 10379 transitions.
[2023-12-25 22:48:20,882 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 745.2) internal successors, (3726), 5 states have internal predecessors, (3726), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:48:20,882 INFO  L276                IsEmpty]: Start isEmpty. Operand 6261 states and 10379 transitions.
[2023-12-25 22:48:20,965 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 4017
[2023-12-25 22:48:20,965 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 22:48:20,966 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 22:48:21,016 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Ended with exit code 0
[2023-12-25 22:48:21,167 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 51 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable53
[2023-12-25 22:48:21,167 INFO  L420      AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 22:48:21,167 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 22:48:21,168 INFO  L85        PathProgramCache]: Analyzing trace with hash 1140759059, now seen corresponding path program 1 times
[2023-12-25 22:48:21,168 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 22:48:21,168 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [369062672]
[2023-12-25 22:48:21,168 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:48:21,168 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 22:48:21,397 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 22:48:21,398 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2061015722]
[2023-12-25 22:48:21,398 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:48:21,399 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 22:48:21,399 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 22:48:21,400 INFO  L229       MonitoredProcess]: Starting monitored process 52 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-25 22:48:21,400 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Waiting until timeout for monitored process
[2023-12-25 22:48:25,455 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 22:48:25,556 INFO  L262         TraceCheckSpWp]: Trace formula consists of 17804 conjuncts, 17 conjunts are in the unsatisfiable core
[2023-12-25 22:48:25,591 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 22:48:26,097 INFO  L134       CoverageAnalysis]: Checked inductivity of 448 backedges. 158 proven. 290 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-25 22:48:26,097 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-12-25 22:48:26,348 INFO  L134       CoverageAnalysis]: Checked inductivity of 448 backedges. 162 proven. 0 refuted. 0 times theorem prover too weak. 286 trivial. 0 not checked.
[2023-12-25 22:48:26,349 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 22:48:26,349 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [369062672]
[2023-12-25 22:48:26,349 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 22:48:26,349 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2061015722]
[2023-12-25 22:48:26,349 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [2061015722] provided 1 perfect and 1 imperfect interpolant sequences
[2023-12-25 22:48:26,349 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2023-12-25 22:48:26,350 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10
[2023-12-25 22:48:26,350 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [981448247]
[2023-12-25 22:48:26,350 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 22:48:26,352 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-12-25 22:48:26,352 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 22:48:26,354 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-12-25 22:48:26,354 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90
[2023-12-25 22:48:26,354 INFO  L87              Difference]: Start difference. First operand 6261 states and 10379 transitions. Second operand  has 5 states, 5 states have (on average 746.2) internal successors, (3731), 5 states have internal predecessors, (3731), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:48:31,504 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 22:48:31,505 INFO  L93              Difference]: Finished difference Result 22203 states and 36617 transitions.
[2023-12-25 22:48:31,505 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2023-12-25 22:48:31,506 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 746.2) internal successors, (3731), 5 states have internal predecessors, (3731), 0 states have call successors, (0), 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 4016
[2023-12-25 22:48:31,508 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 22:48:31,518 INFO  L225             Difference]: With dead ends: 22203
[2023-12-25 22:48:31,518 INFO  L226             Difference]: Without dead ends: 11440
[2023-12-25 22:48:31,527 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 8031 GetRequests, 8022 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 22:48:31,527 INFO  L413           NwaCegarLoop]: 14678 mSDtfsCounter, 22905 mSDsluCounter, 14315 mSDsCounter, 0 mSdLazyCounter, 6731 mSolverCounterSat, 453 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22905 SdHoareTripleChecker+Valid, 28993 SdHoareTripleChecker+Invalid, 7184 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 453 IncrementalHoareTripleChecker+Valid, 6731 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time
[2023-12-25 22:48:31,527 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [22905 Valid, 28993 Invalid, 7184 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [453 Valid, 6731 Invalid, 0 Unknown, 0 Unchecked, 4.9s Time]
[2023-12-25 22:48:31,534 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 11440 states.
[2023-12-25 22:48:31,587 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 11440 to 6266.
[2023-12-25 22:48:31,591 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 6266 states, 6265 states have (on average 1.657781324820431) internal successors, (10386), 6265 states have internal predecessors, (10386), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:48:31,596 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 6266 states to 6266 states and 10386 transitions.
[2023-12-25 22:48:31,596 INFO  L78                 Accepts]: Start accepts. Automaton has 6266 states and 10386 transitions. Word has length 4016
[2023-12-25 22:48:31,598 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 22:48:31,598 INFO  L495      AbstractCegarLoop]: Abstraction has 6266 states and 10386 transitions.
[2023-12-25 22:48:31,599 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 746.2) internal successors, (3731), 5 states have internal predecessors, (3731), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:48:31,599 INFO  L276                IsEmpty]: Start isEmpty. Operand 6266 states and 10386 transitions.
[2023-12-25 22:48:31,682 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 4018
[2023-12-25 22:48:31,682 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 22:48:31,683 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 22:48:31,730 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Forceful destruction successful, exit code 0
[2023-12-25 22:48:31,883 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54,52 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 22:48:31,883 INFO  L420      AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 22:48:31,884 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 22:48:31,884 INFO  L85        PathProgramCache]: Analyzing trace with hash -889449699, now seen corresponding path program 1 times
[2023-12-25 22:48:31,884 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 22:48:31,884 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [456532275]
[2023-12-25 22:48:31,885 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:48:31,885 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 22:48:32,123 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 22:48:32,123 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [699036068]
[2023-12-25 22:48:32,124 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:48:32,124 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 22:48:32,124 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 22:48:32,125 INFO  L229       MonitoredProcess]: Starting monitored process 53 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-25 22:48:32,145 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Waiting until timeout for monitored process
[2023-12-25 22:48:36,216 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 22:48:36,319 INFO  L262         TraceCheckSpWp]: Trace formula consists of 17807 conjuncts, 17 conjunts are in the unsatisfiable core
[2023-12-25 22:48:36,357 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 22:48:36,867 INFO  L134       CoverageAnalysis]: Checked inductivity of 448 backedges. 162 proven. 286 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-25 22:48:36,868 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-12-25 22:48:37,168 INFO  L134       CoverageAnalysis]: Checked inductivity of 448 backedges. 166 proven. 0 refuted. 0 times theorem prover too weak. 282 trivial. 0 not checked.
[2023-12-25 22:48:37,168 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 22:48:37,168 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [456532275]
[2023-12-25 22:48:37,168 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 22:48:37,168 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [699036068]
[2023-12-25 22:48:37,168 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [699036068] provided 1 perfect and 1 imperfect interpolant sequences
[2023-12-25 22:48:37,168 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2023-12-25 22:48:37,169 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10
[2023-12-25 22:48:37,169 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1974075994]
[2023-12-25 22:48:37,169 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 22:48:37,171 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-12-25 22:48:37,171 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 22:48:37,173 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-12-25 22:48:37,173 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90
[2023-12-25 22:48:37,173 INFO  L87              Difference]: Start difference. First operand 6266 states and 10386 transitions. Second operand  has 5 states, 5 states have (on average 747.2) internal successors, (3736), 5 states have internal predecessors, (3736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:48:42,930 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 22:48:42,930 INFO  L93              Difference]: Finished difference Result 22227 states and 36651 transitions.
[2023-12-25 22:48:42,930 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2023-12-25 22:48:42,931 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 747.2) internal successors, (3736), 5 states have internal predecessors, (3736), 0 states have call successors, (0), 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 4017
[2023-12-25 22:48:42,934 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 22:48:42,945 INFO  L225             Difference]: With dead ends: 22227
[2023-12-25 22:48:42,945 INFO  L226             Difference]: Without dead ends: 11444
[2023-12-25 22:48:42,954 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 8033 GetRequests, 8024 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 22:48:42,954 INFO  L413           NwaCegarLoop]: 14665 mSDtfsCounter, 15751 mSDsluCounter, 21053 mSDsCounter, 0 mSdLazyCounter, 8543 mSolverCounterSat, 453 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15751 SdHoareTripleChecker+Valid, 35718 SdHoareTripleChecker+Invalid, 8996 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 453 IncrementalHoareTripleChecker+Valid, 8543 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.5s IncrementalHoareTripleChecker+Time
[2023-12-25 22:48:42,954 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [15751 Valid, 35718 Invalid, 8996 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [453 Valid, 8543 Invalid, 0 Unknown, 0 Unchecked, 5.5s Time]
[2023-12-25 22:48:42,964 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 11444 states.
[2023-12-25 22:48:43,023 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 11444 to 6271.
[2023-12-25 22:48:43,028 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 6271 states, 6270 states have (on average 1.6575757575757575) internal successors, (10393), 6270 states have internal predecessors, (10393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:48:43,034 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 6271 states to 6271 states and 10393 transitions.
[2023-12-25 22:48:43,034 INFO  L78                 Accepts]: Start accepts. Automaton has 6271 states and 10393 transitions. Word has length 4017
[2023-12-25 22:48:43,036 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 22:48:43,036 INFO  L495      AbstractCegarLoop]: Abstraction has 6271 states and 10393 transitions.
[2023-12-25 22:48:43,037 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 747.2) internal successors, (3736), 5 states have internal predecessors, (3736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:48:43,037 INFO  L276                IsEmpty]: Start isEmpty. Operand 6271 states and 10393 transitions.
[2023-12-25 22:48:43,234 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 4019
[2023-12-25 22:48:43,234 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 22:48:43,235 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 22:48:43,292 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Forceful destruction successful, exit code 0
[2023-12-25 22:48:43,435 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 53 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable55
[2023-12-25 22:48:43,436 INFO  L420      AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 22:48:43,436 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 22:48:43,437 INFO  L85        PathProgramCache]: Analyzing trace with hash 479976735, now seen corresponding path program 1 times
[2023-12-25 22:48:43,437 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 22:48:43,437 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1996498330]
[2023-12-25 22:48:43,437 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:48:43,437 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 22:48:43,683 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 22:48:43,683 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1693910766]
[2023-12-25 22:48:43,684 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:48:43,684 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 22:48:43,684 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 22:48:43,685 INFO  L229       MonitoredProcess]: Starting monitored process 54 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-25 22:48:43,686 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Waiting until timeout for monitored process
[2023-12-25 22:48:47,543 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 22:48:47,641 INFO  L262         TraceCheckSpWp]: Trace formula consists of 17810 conjuncts, 17 conjunts are in the unsatisfiable core
[2023-12-25 22:48:47,677 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 22:48:48,182 INFO  L134       CoverageAnalysis]: Checked inductivity of 448 backedges. 166 proven. 282 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-25 22:48:48,182 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-12-25 22:48:48,453 INFO  L134       CoverageAnalysis]: Checked inductivity of 448 backedges. 170 proven. 0 refuted. 0 times theorem prover too weak. 278 trivial. 0 not checked.
[2023-12-25 22:48:48,453 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 22:48:48,453 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1996498330]
[2023-12-25 22:48:48,453 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 22:48:48,453 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1693910766]
[2023-12-25 22:48:48,453 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1693910766] provided 1 perfect and 1 imperfect interpolant sequences
[2023-12-25 22:48:48,453 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2023-12-25 22:48:48,454 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10
[2023-12-25 22:48:48,454 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1007444359]
[2023-12-25 22:48:48,454 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 22:48:48,456 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-12-25 22:48:48,456 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 22:48:48,457 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-12-25 22:48:48,457 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90
[2023-12-25 22:48:48,458 INFO  L87              Difference]: Start difference. First operand 6271 states and 10393 transitions. Second operand  has 5 states, 5 states have (on average 748.2) internal successors, (3741), 5 states have internal predecessors, (3741), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:48:54,218 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 22:48:54,218 INFO  L93              Difference]: Finished difference Result 22251 states and 36685 transitions.
[2023-12-25 22:48:54,218 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2023-12-25 22:48:54,219 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 748.2) internal successors, (3741), 5 states have internal predecessors, (3741), 0 states have call successors, (0), 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 4018
[2023-12-25 22:48:54,222 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 22:48:54,232 INFO  L225             Difference]: With dead ends: 22251
[2023-12-25 22:48:54,233 INFO  L226             Difference]: Without dead ends: 11448
[2023-12-25 22:48:54,241 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 8035 GetRequests, 8026 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 22:48:54,241 INFO  L413           NwaCegarLoop]: 14652 mSDtfsCounter, 15744 mSDsluCounter, 21044 mSDsCounter, 0 mSdLazyCounter, 8539 mSolverCounterSat, 453 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15744 SdHoareTripleChecker+Valid, 35696 SdHoareTripleChecker+Invalid, 8992 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 453 IncrementalHoareTripleChecker+Valid, 8539 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.5s IncrementalHoareTripleChecker+Time
[2023-12-25 22:48:54,242 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [15744 Valid, 35696 Invalid, 8992 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [453 Valid, 8539 Invalid, 0 Unknown, 0 Unchecked, 5.5s Time]
[2023-12-25 22:48:54,252 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 11448 states.
[2023-12-25 22:48:54,308 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 11448 to 6276.
[2023-12-25 22:48:54,312 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 6276 states, 6275 states have (on average 1.657370517928287) internal successors, (10400), 6275 states have internal predecessors, (10400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:48:54,317 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 6276 states to 6276 states and 10400 transitions.
[2023-12-25 22:48:54,317 INFO  L78                 Accepts]: Start accepts. Automaton has 6276 states and 10400 transitions. Word has length 4018
[2023-12-25 22:48:54,319 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 22:48:54,319 INFO  L495      AbstractCegarLoop]: Abstraction has 6276 states and 10400 transitions.
[2023-12-25 22:48:54,320 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 748.2) internal successors, (3741), 5 states have internal predecessors, (3741), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:48:54,320 INFO  L276                IsEmpty]: Start isEmpty. Operand 6276 states and 10400 transitions.
[2023-12-25 22:48:54,403 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 4020
[2023-12-25 22:48:54,403 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 22:48:54,404 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 22:48:54,451 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Forceful destruction successful, exit code 0
[2023-12-25 22:48:54,604 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 54 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable56
[2023-12-25 22:48:54,605 INFO  L420      AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 22:48:54,605 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 22:48:54,606 INFO  L85        PathProgramCache]: Analyzing trace with hash 382759185, now seen corresponding path program 1 times
[2023-12-25 22:48:54,606 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 22:48:54,606 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [67381702]
[2023-12-25 22:48:54,606 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:48:54,606 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 22:48:54,842 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 22:48:54,842 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1898976087]
[2023-12-25 22:48:54,843 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:48:54,843 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 22:48:54,843 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 22:48:54,844 INFO  L229       MonitoredProcess]: Starting monitored process 55 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-25 22:48:54,845 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Waiting until timeout for monitored process
[2023-12-25 22:48:58,873 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 22:48:58,975 INFO  L262         TraceCheckSpWp]: Trace formula consists of 17813 conjuncts, 17 conjunts are in the unsatisfiable core
[2023-12-25 22:48:59,012 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 22:48:59,519 INFO  L134       CoverageAnalysis]: Checked inductivity of 448 backedges. 170 proven. 278 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-25 22:48:59,519 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-12-25 22:48:59,795 INFO  L134       CoverageAnalysis]: Checked inductivity of 448 backedges. 174 proven. 0 refuted. 0 times theorem prover too weak. 274 trivial. 0 not checked.
[2023-12-25 22:48:59,796 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 22:48:59,796 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [67381702]
[2023-12-25 22:48:59,796 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 22:48:59,796 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1898976087]
[2023-12-25 22:48:59,796 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1898976087] provided 1 perfect and 1 imperfect interpolant sequences
[2023-12-25 22:48:59,796 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2023-12-25 22:48:59,797 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10
[2023-12-25 22:48:59,797 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [461916534]
[2023-12-25 22:48:59,797 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 22:48:59,799 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-12-25 22:48:59,799 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 22:48:59,800 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-12-25 22:48:59,801 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90
[2023-12-25 22:48:59,801 INFO  L87              Difference]: Start difference. First operand 6276 states and 10400 transitions. Second operand  has 5 states, 5 states have (on average 749.2) internal successors, (3746), 5 states have internal predecessors, (3746), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:49:05,765 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 22:49:05,766 INFO  L93              Difference]: Finished difference Result 22275 states and 36719 transitions.
[2023-12-25 22:49:05,766 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2023-12-25 22:49:05,767 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 749.2) internal successors, (3746), 5 states have internal predecessors, (3746), 0 states have call successors, (0), 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 4019
[2023-12-25 22:49:05,770 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 22:49:05,780 INFO  L225             Difference]: With dead ends: 22275
[2023-12-25 22:49:05,780 INFO  L226             Difference]: Without dead ends: 11452
[2023-12-25 22:49:05,788 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 8037 GetRequests, 8028 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 22:49:05,789 INFO  L413           NwaCegarLoop]: 14639 mSDtfsCounter, 15684 mSDsluCounter, 21567 mSDsCounter, 0 mSdLazyCounter, 9163 mSolverCounterSat, 453 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15684 SdHoareTripleChecker+Valid, 36206 SdHoareTripleChecker+Invalid, 9616 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 453 IncrementalHoareTripleChecker+Valid, 9163 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.7s IncrementalHoareTripleChecker+Time
[2023-12-25 22:49:05,789 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [15684 Valid, 36206 Invalid, 9616 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [453 Valid, 9163 Invalid, 0 Unknown, 0 Unchecked, 5.7s Time]
[2023-12-25 22:49:05,797 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 11452 states.
[2023-12-25 22:49:05,855 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 11452 to 6281.
[2023-12-25 22:49:05,860 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 6281 states, 6280 states have (on average 1.6571656050955414) internal successors, (10407), 6280 states have internal predecessors, (10407), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:49:05,866 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 6281 states to 6281 states and 10407 transitions.
[2023-12-25 22:49:05,866 INFO  L78                 Accepts]: Start accepts. Automaton has 6281 states and 10407 transitions. Word has length 4019
[2023-12-25 22:49:05,868 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 22:49:05,868 INFO  L495      AbstractCegarLoop]: Abstraction has 6281 states and 10407 transitions.
[2023-12-25 22:49:05,869 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 749.2) internal successors, (3746), 5 states have internal predecessors, (3746), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:49:05,869 INFO  L276                IsEmpty]: Start isEmpty. Operand 6281 states and 10407 transitions.
[2023-12-25 22:49:05,954 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 4021
[2023-12-25 22:49:05,954 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 22:49:05,955 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 22:49:06,001 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Forceful destruction successful, exit code 0
[2023-12-25 22:49:06,155 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57,55 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 22:49:06,156 INFO  L420      AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 22:49:06,156 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 22:49:06,156 INFO  L85        PathProgramCache]: Analyzing trace with hash -1411011029, now seen corresponding path program 1 times
[2023-12-25 22:49:06,156 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 22:49:06,156 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1117881021]
[2023-12-25 22:49:06,157 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:49:06,157 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 22:49:06,379 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 22:49:06,379 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [579443771]
[2023-12-25 22:49:06,380 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:49:06,380 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 22:49:06,380 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 22:49:06,381 INFO  L229       MonitoredProcess]: Starting monitored process 56 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-25 22:49:06,382 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Waiting until timeout for monitored process
[2023-12-25 22:49:10,490 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 22:49:10,602 INFO  L262         TraceCheckSpWp]: Trace formula consists of 17816 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-12-25 22:49:10,643 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 22:49:11,167 INFO  L134       CoverageAnalysis]: Checked inductivity of 448 backedges. 174 proven. 274 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-25 22:49:11,167 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-12-25 22:49:11,461 INFO  L134       CoverageAnalysis]: Checked inductivity of 448 backedges. 178 proven. 0 refuted. 0 times theorem prover too weak. 270 trivial. 0 not checked.
[2023-12-25 22:49:11,461 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 22:49:11,461 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1117881021]
[2023-12-25 22:49:11,461 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 22:49:11,461 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [579443771]
[2023-12-25 22:49:11,461 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [579443771] provided 1 perfect and 1 imperfect interpolant sequences
[2023-12-25 22:49:11,461 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2023-12-25 22:49:11,462 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8] total 12
[2023-12-25 22:49:11,462 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [360960065]
[2023-12-25 22:49:11,462 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 22:49:11,464 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2023-12-25 22:49:11,464 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 22:49:11,465 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2023-12-25 22:49:11,465 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132
[2023-12-25 22:49:11,466 INFO  L87              Difference]: Start difference. First operand 6281 states and 10407 transitions. Second operand  has 6 states, 6 states have (on average 625.1666666666666) internal successors, (3751), 6 states have internal predecessors, (3751), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:49:22,360 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 22:49:22,360 INFO  L93              Difference]: Finished difference Result 27975 states and 46151 transitions.
[2023-12-25 22:49:22,361 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. 
[2023-12-25 22:49:22,362 INFO  L78                 Accepts]: Start accepts. Automaton has  has 6 states, 6 states have (on average 625.1666666666666) internal successors, (3751), 6 states have internal predecessors, (3751), 0 states have call successors, (0), 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 4020
[2023-12-25 22:49:22,364 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 22:49:22,377 INFO  L225             Difference]: With dead ends: 27975
[2023-12-25 22:49:22,377 INFO  L226             Difference]: Without dead ends: 17132
[2023-12-25 22:49:22,383 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 8041 GetRequests, 8028 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210
[2023-12-25 22:49:22,383 INFO  L413           NwaCegarLoop]: 14629 mSDtfsCounter, 24386 mSDsluCounter, 49503 mSDsCounter, 0 mSdLazyCounter, 18400 mSolverCounterSat, 456 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24386 SdHoareTripleChecker+Valid, 64132 SdHoareTripleChecker+Invalid, 18856 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 456 IncrementalHoareTripleChecker+Valid, 18400 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.4s IncrementalHoareTripleChecker+Time
[2023-12-25 22:49:22,384 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [24386 Valid, 64132 Invalid, 18856 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [456 Valid, 18400 Invalid, 0 Unknown, 0 Unchecked, 10.4s Time]
[2023-12-25 22:49:22,397 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 17132 states.
[2023-12-25 22:49:22,461 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 17132 to 6286.
[2023-12-25 22:49:22,465 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 6286 states, 6285 states have (on average 1.6569610182975338) internal successors, (10414), 6285 states have internal predecessors, (10414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:49:22,471 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 6286 states to 6286 states and 10414 transitions.
[2023-12-25 22:49:22,471 INFO  L78                 Accepts]: Start accepts. Automaton has 6286 states and 10414 transitions. Word has length 4020
[2023-12-25 22:49:22,473 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 22:49:22,473 INFO  L495      AbstractCegarLoop]: Abstraction has 6286 states and 10414 transitions.
[2023-12-25 22:49:22,473 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 6 states, 6 states have (on average 625.1666666666666) internal successors, (3751), 6 states have internal predecessors, (3751), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:49:22,474 INFO  L276                IsEmpty]: Start isEmpty. Operand 6286 states and 10414 transitions.
[2023-12-25 22:49:22,559 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 4022
[2023-12-25 22:49:22,559 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 22:49:22,560 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 22:49:22,614 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Forceful destruction successful, exit code 0
[2023-12-25 22:49:22,760 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58,56 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 22:49:22,761 INFO  L420      AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 22:49:22,761 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 22:49:22,761 INFO  L85        PathProgramCache]: Analyzing trace with hash -1801412347, now seen corresponding path program 1 times
[2023-12-25 22:49:22,762 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 22:49:22,762 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1519486697]
[2023-12-25 22:49:22,762 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:49:22,762 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 22:49:22,991 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 22:49:22,991 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [403199701]
[2023-12-25 22:49:22,992 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:49:22,992 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 22:49:22,992 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 22:49:22,993 INFO  L229       MonitoredProcess]: Starting monitored process 57 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-25 22:49:22,994 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Waiting until timeout for monitored process
[2023-12-25 22:49:26,981 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 22:49:27,095 INFO  L262         TraceCheckSpWp]: Trace formula consists of 17819 conjuncts, 17 conjunts are in the unsatisfiable core
[2023-12-25 22:49:27,136 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 22:49:27,641 INFO  L134       CoverageAnalysis]: Checked inductivity of 448 backedges. 178 proven. 270 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-25 22:49:27,642 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-12-25 22:49:27,918 INFO  L134       CoverageAnalysis]: Checked inductivity of 448 backedges. 182 proven. 0 refuted. 0 times theorem prover too weak. 266 trivial. 0 not checked.
[2023-12-25 22:49:27,918 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 22:49:27,919 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1519486697]
[2023-12-25 22:49:27,919 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 22:49:27,919 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [403199701]
[2023-12-25 22:49:27,919 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [403199701] provided 1 perfect and 1 imperfect interpolant sequences
[2023-12-25 22:49:27,919 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2023-12-25 22:49:27,919 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10
[2023-12-25 22:49:27,920 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1906261820]
[2023-12-25 22:49:27,920 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 22:49:27,922 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-12-25 22:49:27,922 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 22:49:27,923 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-12-25 22:49:27,923 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90
[2023-12-25 22:49:27,924 INFO  L87              Difference]: Start difference. First operand 6286 states and 10414 transitions. Second operand  has 5 states, 5 states have (on average 751.2) internal successors, (3756), 5 states have internal predecessors, (3756), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:49:33,231 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 22:49:33,232 INFO  L93              Difference]: Finished difference Result 22323 states and 36787 transitions.
[2023-12-25 22:49:33,232 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2023-12-25 22:49:33,233 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 751.2) internal successors, (3756), 5 states have internal predecessors, (3756), 0 states have call successors, (0), 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 4021
[2023-12-25 22:49:33,235 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 22:49:33,242 INFO  L225             Difference]: With dead ends: 22323
[2023-12-25 22:49:33,242 INFO  L226             Difference]: Without dead ends: 11460
[2023-12-25 22:49:33,246 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 8041 GetRequests, 8032 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 22:49:33,246 INFO  L413           NwaCegarLoop]: 14613 mSDtfsCounter, 22845 mSDsluCounter, 14285 mSDsCounter, 0 mSdLazyCounter, 6711 mSolverCounterSat, 453 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22845 SdHoareTripleChecker+Valid, 28898 SdHoareTripleChecker+Invalid, 7164 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 453 IncrementalHoareTripleChecker+Valid, 6711 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time
[2023-12-25 22:49:33,246 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [22845 Valid, 28898 Invalid, 7164 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [453 Valid, 6711 Invalid, 0 Unknown, 0 Unchecked, 4.9s Time]
[2023-12-25 22:49:33,252 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 11460 states.
[2023-12-25 22:49:33,303 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 11460 to 6291.
[2023-12-25 22:49:33,307 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 6291 states, 6290 states have (on average 1.6567567567567567) internal successors, (10421), 6290 states have internal predecessors, (10421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:49:33,315 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 6291 states to 6291 states and 10421 transitions.
[2023-12-25 22:49:33,315 INFO  L78                 Accepts]: Start accepts. Automaton has 6291 states and 10421 transitions. Word has length 4021
[2023-12-25 22:49:33,318 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 22:49:33,318 INFO  L495      AbstractCegarLoop]: Abstraction has 6291 states and 10421 transitions.
[2023-12-25 22:49:33,319 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 751.2) internal successors, (3756), 5 states have internal predecessors, (3756), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:49:33,319 INFO  L276                IsEmpty]: Start isEmpty. Operand 6291 states and 10421 transitions.
[2023-12-25 22:49:33,402 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 4023
[2023-12-25 22:49:33,403 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 22:49:33,403 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 22:49:33,458 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Ended with exit code 0
[2023-12-25 22:49:33,604 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 57 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable59
[2023-12-25 22:49:33,604 INFO  L420      AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 22:49:33,605 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 22:49:33,605 INFO  L85        PathProgramCache]: Analyzing trace with hash -1162130121, now seen corresponding path program 1 times
[2023-12-25 22:49:33,605 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 22:49:33,605 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1123227373]
[2023-12-25 22:49:33,606 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:49:33,606 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 22:49:33,850 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 22:49:33,851 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1488100953]
[2023-12-25 22:49:33,852 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:49:33,852 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 22:49:33,852 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 22:49:33,853 INFO  L229       MonitoredProcess]: Starting monitored process 58 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-25 22:49:33,868 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Waiting until timeout for monitored process
[2023-12-25 22:49:37,790 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 22:49:37,895 INFO  L262         TraceCheckSpWp]: Trace formula consists of 17822 conjuncts, 17 conjunts are in the unsatisfiable core
[2023-12-25 22:49:37,930 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 22:49:38,437 INFO  L134       CoverageAnalysis]: Checked inductivity of 448 backedges. 182 proven. 266 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-25 22:49:38,437 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-12-25 22:49:38,733 INFO  L134       CoverageAnalysis]: Checked inductivity of 448 backedges. 186 proven. 0 refuted. 0 times theorem prover too weak. 262 trivial. 0 not checked.
[2023-12-25 22:49:38,733 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 22:49:38,733 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1123227373]
[2023-12-25 22:49:38,733 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 22:49:38,733 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1488100953]
[2023-12-25 22:49:38,733 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1488100953] provided 1 perfect and 1 imperfect interpolant sequences
[2023-12-25 22:49:38,733 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2023-12-25 22:49:38,734 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10
[2023-12-25 22:49:38,734 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [357256305]
[2023-12-25 22:49:38,734 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 22:49:38,736 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-12-25 22:49:38,736 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 22:49:38,737 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-12-25 22:49:38,737 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90
[2023-12-25 22:49:38,738 INFO  L87              Difference]: Start difference. First operand 6291 states and 10421 transitions. Second operand  has 5 states, 5 states have (on average 752.2) internal successors, (3761), 5 states have internal predecessors, (3761), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:49:44,848 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 22:49:44,848 INFO  L93              Difference]: Finished difference Result 22347 states and 36821 transitions.
[2023-12-25 22:49:44,849 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2023-12-25 22:49:44,850 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 752.2) internal successors, (3761), 5 states have internal predecessors, (3761), 0 states have call successors, (0), 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 4022
[2023-12-25 22:49:44,853 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 22:49:44,861 INFO  L225             Difference]: With dead ends: 22347
[2023-12-25 22:49:44,861 INFO  L226             Difference]: Without dead ends: 11464
[2023-12-25 22:49:44,864 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 8043 GetRequests, 8034 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 22:49:44,865 INFO  L413           NwaCegarLoop]: 14600 mSDtfsCounter, 15660 mSDsluCounter, 21531 mSDsCounter, 0 mSdLazyCounter, 9139 mSolverCounterSat, 453 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15660 SdHoareTripleChecker+Valid, 36131 SdHoareTripleChecker+Invalid, 9592 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 453 IncrementalHoareTripleChecker+Valid, 9139 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.7s IncrementalHoareTripleChecker+Time
[2023-12-25 22:49:44,865 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [15660 Valid, 36131 Invalid, 9592 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [453 Valid, 9139 Invalid, 0 Unknown, 0 Unchecked, 5.7s Time]
[2023-12-25 22:49:44,872 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 11464 states.
[2023-12-25 22:49:44,925 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 11464 to 6296.
[2023-12-25 22:49:44,930 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 6296 states, 6295 states have (on average 1.6565528196981731) internal successors, (10428), 6295 states have internal predecessors, (10428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:49:44,935 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 6296 states to 6296 states and 10428 transitions.
[2023-12-25 22:49:44,935 INFO  L78                 Accepts]: Start accepts. Automaton has 6296 states and 10428 transitions. Word has length 4022
[2023-12-25 22:49:44,937 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 22:49:44,937 INFO  L495      AbstractCegarLoop]: Abstraction has 6296 states and 10428 transitions.
[2023-12-25 22:49:44,938 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 752.2) internal successors, (3761), 5 states have internal predecessors, (3761), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:49:44,938 INFO  L276                IsEmpty]: Start isEmpty. Operand 6296 states and 10428 transitions.
[2023-12-25 22:49:45,021 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 4024
[2023-12-25 22:49:45,021 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 22:49:45,022 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 22:49:45,074 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Forceful destruction successful, exit code 0
[2023-12-25 22:49:45,222 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60,58 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 22:49:45,223 INFO  L420      AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 22:49:45,223 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 22:49:45,224 INFO  L85        PathProgramCache]: Analyzing trace with hash 598565625, now seen corresponding path program 1 times
[2023-12-25 22:49:45,224 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 22:49:45,224 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1227501976]
[2023-12-25 22:49:45,224 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:49:45,224 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 22:49:45,472 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 22:49:45,472 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [802749106]
[2023-12-25 22:49:45,473 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:49:45,473 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 22:49:45,473 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 22:49:45,474 INFO  L229       MonitoredProcess]: Starting monitored process 59 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-25 22:49:45,475 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Waiting until timeout for monitored process
[2023-12-25 22:49:49,462 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 22:49:49,560 INFO  L262         TraceCheckSpWp]: Trace formula consists of 17825 conjuncts, 17 conjunts are in the unsatisfiable core
[2023-12-25 22:49:49,595 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 22:49:50,101 INFO  L134       CoverageAnalysis]: Checked inductivity of 448 backedges. 186 proven. 262 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-25 22:49:50,101 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-12-25 22:49:50,385 INFO  L134       CoverageAnalysis]: Checked inductivity of 448 backedges. 190 proven. 0 refuted. 0 times theorem prover too weak. 258 trivial. 0 not checked.
[2023-12-25 22:49:50,385 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 22:49:50,385 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1227501976]
[2023-12-25 22:49:50,385 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 22:49:50,385 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [802749106]
[2023-12-25 22:49:50,385 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [802749106] provided 1 perfect and 1 imperfect interpolant sequences
[2023-12-25 22:49:50,385 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2023-12-25 22:49:50,386 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10
[2023-12-25 22:49:50,386 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [423112321]
[2023-12-25 22:49:50,386 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 22:49:50,388 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-12-25 22:49:50,388 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 22:49:50,390 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-12-25 22:49:50,390 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90
[2023-12-25 22:49:50,390 INFO  L87              Difference]: Start difference. First operand 6296 states and 10428 transitions. Second operand  has 5 states, 5 states have (on average 753.2) internal successors, (3766), 5 states have internal predecessors, (3766), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:49:55,678 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 22:49:55,678 INFO  L93              Difference]: Finished difference Result 22371 states and 36855 transitions.
[2023-12-25 22:49:55,679 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2023-12-25 22:49:55,680 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 753.2) internal successors, (3766), 5 states have internal predecessors, (3766), 0 states have call successors, (0), 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 4023
[2023-12-25 22:49:55,682 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 22:49:55,689 INFO  L225             Difference]: With dead ends: 22371
[2023-12-25 22:49:55,690 INFO  L226             Difference]: Without dead ends: 11468
[2023-12-25 22:49:55,693 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 8045 GetRequests, 8036 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 22:49:55,694 INFO  L413           NwaCegarLoop]: 14587 mSDtfsCounter, 22764 mSDsluCounter, 14274 mSDsCounter, 0 mSdLazyCounter, 6703 mSolverCounterSat, 453 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22764 SdHoareTripleChecker+Valid, 28861 SdHoareTripleChecker+Invalid, 7156 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 453 IncrementalHoareTripleChecker+Valid, 6703 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time
[2023-12-25 22:49:55,694 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [22764 Valid, 28861 Invalid, 7156 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [453 Valid, 6703 Invalid, 0 Unknown, 0 Unchecked, 5.0s Time]
[2023-12-25 22:49:55,699 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 11468 states.
[2023-12-25 22:49:55,743 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 11468 to 6301.
[2023-12-25 22:49:55,747 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 6301 states, 6300 states have (on average 1.6563492063492065) internal successors, (10435), 6300 states have internal predecessors, (10435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:49:55,752 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 6301 states to 6301 states and 10435 transitions.
[2023-12-25 22:49:55,752 INFO  L78                 Accepts]: Start accepts. Automaton has 6301 states and 10435 transitions. Word has length 4023
[2023-12-25 22:49:55,753 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 22:49:55,753 INFO  L495      AbstractCegarLoop]: Abstraction has 6301 states and 10435 transitions.
[2023-12-25 22:49:55,754 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 753.2) internal successors, (3766), 5 states have internal predecessors, (3766), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:49:55,754 INFO  L276                IsEmpty]: Start isEmpty. Operand 6301 states and 10435 transitions.
[2023-12-25 22:49:55,836 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 4025
[2023-12-25 22:49:55,836 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 22:49:55,837 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 22:49:55,890 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Forceful destruction successful, exit code 0
[2023-12-25 22:49:56,038 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 59 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable61
[2023-12-25 22:49:56,038 INFO  L420      AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 22:49:56,038 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 22:49:56,039 INFO  L85        PathProgramCache]: Analyzing trace with hash -1464075709, now seen corresponding path program 1 times
[2023-12-25 22:49:56,039 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 22:49:56,039 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [96599264]
[2023-12-25 22:49:56,039 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:49:56,039 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 22:49:56,281 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 22:49:56,281 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [485157889]
[2023-12-25 22:49:56,282 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:49:56,282 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 22:49:56,282 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 22:49:56,283 INFO  L229       MonitoredProcess]: Starting monitored process 60 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-25 22:49:56,296 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Waiting until timeout for monitored process
[2023-12-25 22:50:00,176 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 22:50:00,282 INFO  L262         TraceCheckSpWp]: Trace formula consists of 17828 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-12-25 22:50:00,322 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 22:50:00,834 INFO  L134       CoverageAnalysis]: Checked inductivity of 448 backedges. 190 proven. 258 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-25 22:50:00,834 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-12-25 22:50:01,137 INFO  L134       CoverageAnalysis]: Checked inductivity of 448 backedges. 194 proven. 0 refuted. 0 times theorem prover too weak. 254 trivial. 0 not checked.
[2023-12-25 22:50:01,137 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 22:50:01,137 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [96599264]
[2023-12-25 22:50:01,137 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 22:50:01,137 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [485157889]
[2023-12-25 22:50:01,137 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [485157889] provided 1 perfect and 1 imperfect interpolant sequences
[2023-12-25 22:50:01,137 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2023-12-25 22:50:01,138 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8] total 12
[2023-12-25 22:50:01,138 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [206882294]
[2023-12-25 22:50:01,138 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 22:50:01,140 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2023-12-25 22:50:01,140 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 22:50:01,142 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2023-12-25 22:50:01,142 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132
[2023-12-25 22:50:01,142 INFO  L87              Difference]: Start difference. First operand 6301 states and 10435 transitions. Second operand  has 6 states, 6 states have (on average 628.5) internal successors, (3771), 6 states have internal predecessors, (3771), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:50:10,573 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 22:50:10,573 INFO  L93              Difference]: Finished difference Result 28115 states and 46355 transitions.
[2023-12-25 22:50:10,573 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. 
[2023-12-25 22:50:10,574 INFO  L78                 Accepts]: Start accepts. Automaton has  has 6 states, 6 states have (on average 628.5) internal successors, (3771), 6 states have internal predecessors, (3771), 0 states have call successors, (0), 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 4024
[2023-12-25 22:50:10,577 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 22:50:10,593 INFO  L225             Difference]: With dead ends: 28115
[2023-12-25 22:50:10,593 INFO  L226             Difference]: Without dead ends: 17192
[2023-12-25 22:50:10,603 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 8049 GetRequests, 8036 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210
[2023-12-25 22:50:10,603 INFO  L413           NwaCegarLoop]: 14577 mSDtfsCounter, 38628 mSDsluCounter, 35293 mSDsCounter, 0 mSdLazyCounter, 14115 mSolverCounterSat, 457 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38628 SdHoareTripleChecker+Valid, 49870 SdHoareTripleChecker+Invalid, 14572 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 457 IncrementalHoareTripleChecker+Valid, 14115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.0s IncrementalHoareTripleChecker+Time
[2023-12-25 22:50:10,603 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [38628 Valid, 49870 Invalid, 14572 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [457 Valid, 14115 Invalid, 0 Unknown, 0 Unchecked, 9.0s Time]
[2023-12-25 22:50:10,615 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 17192 states.
[2023-12-25 22:50:10,688 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 17192 to 6306.
[2023-12-25 22:50:10,692 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 6306 states, 6305 states have (on average 1.6561459159397303) internal successors, (10442), 6305 states have internal predecessors, (10442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:50:10,697 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 6306 states to 6306 states and 10442 transitions.
[2023-12-25 22:50:10,697 INFO  L78                 Accepts]: Start accepts. Automaton has 6306 states and 10442 transitions. Word has length 4024
[2023-12-25 22:50:10,699 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 22:50:10,699 INFO  L495      AbstractCegarLoop]: Abstraction has 6306 states and 10442 transitions.
[2023-12-25 22:50:10,699 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 6 states, 6 states have (on average 628.5) internal successors, (3771), 6 states have internal predecessors, (3771), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:50:10,699 INFO  L276                IsEmpty]: Start isEmpty. Operand 6306 states and 10442 transitions.
[2023-12-25 22:50:10,782 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 4026
[2023-12-25 22:50:10,783 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 22:50:10,783 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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1]
[2023-12-25 22:50:10,835 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Forceful destruction successful, exit code 0
[2023-12-25 22:50:10,985 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 60 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable62
[2023-12-25 22:50:10,985 INFO  L420      AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 22:50:10,985 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 22:50:10,986 INFO  L85        PathProgramCache]: Analyzing trace with hash -25725203, now seen corresponding path program 1 times
[2023-12-25 22:50:10,986 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 22:50:10,986 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [496492432]
[2023-12-25 22:50:10,986 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:50:10,986 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 22:50:11,221 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 22:50:11,221 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1966239318]
[2023-12-25 22:50:11,222 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:50:11,222 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 22:50:11,222 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 22:50:11,223 INFO  L229       MonitoredProcess]: Starting monitored process 61 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-25 22:50:11,224 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Waiting until timeout for monitored process
[2023-12-25 22:50:15,140 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 22:50:15,242 INFO  L262         TraceCheckSpWp]: Trace formula consists of 17831 conjuncts, 17 conjunts are in the unsatisfiable core
[2023-12-25 22:50:15,278 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 22:50:15,994 INFO  L134       CoverageAnalysis]: Checked inductivity of 448 backedges. 194 proven. 254 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-25 22:50:15,994 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-12-25 22:50:16,293 INFO  L134       CoverageAnalysis]: Checked inductivity of 448 backedges. 198 proven. 0 refuted. 0 times theorem prover too weak. 250 trivial. 0 not checked.
[2023-12-25 22:50:16,293 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 22:50:16,293 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [496492432]
[2023-12-25 22:50:16,293 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 22:50:16,293 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1966239318]
[2023-12-25 22:50:16,294 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1966239318] provided 1 perfect and 1 imperfect interpolant sequences
[2023-12-25 22:50:16,294 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2023-12-25 22:50:16,294 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10
[2023-12-25 22:50:16,294 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [731988018]
[2023-12-25 22:50:16,294 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 22:50:16,296 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-12-25 22:50:16,296 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 22:50:16,298 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-12-25 22:50:16,298 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90
[2023-12-25 22:50:16,298 INFO  L87              Difference]: Start difference. First operand 6306 states and 10442 transitions. Second operand  has 5 states, 5 states have (on average 755.2) internal successors, (3776), 5 states have internal predecessors, (3776), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:50:22,014 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 22:50:22,014 INFO  L93              Difference]: Finished difference Result 22419 states and 36923 transitions.
[2023-12-25 22:50:22,014 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2023-12-25 22:50:22,015 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 755.2) internal successors, (3776), 5 states have internal predecessors, (3776), 0 states have call successors, (0), 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 4025
[2023-12-25 22:50:22,018 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 22:50:22,028 INFO  L225             Difference]: With dead ends: 22419
[2023-12-25 22:50:22,029 INFO  L226             Difference]: Without dead ends: 11476
[2023-12-25 22:50:22,037 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 8049 GetRequests, 8040 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 22:50:22,038 INFO  L413           NwaCegarLoop]: 14561 mSDtfsCounter, 15695 mSDsluCounter, 20981 mSDsCounter, 0 mSdLazyCounter, 8511 mSolverCounterSat, 453 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15695 SdHoareTripleChecker+Valid, 35542 SdHoareTripleChecker+Invalid, 8964 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 453 IncrementalHoareTripleChecker+Valid, 8511 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.4s IncrementalHoareTripleChecker+Time
[2023-12-25 22:50:22,038 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [15695 Valid, 35542 Invalid, 8964 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [453 Valid, 8511 Invalid, 0 Unknown, 0 Unchecked, 5.4s Time]
[2023-12-25 22:50:22,048 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 11476 states.
[2023-12-25 22:50:22,105 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 11476 to 6311.
[2023-12-25 22:50:22,110 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 6311 states, 6310 states have (on average 1.6559429477020602) internal successors, (10449), 6310 states have internal predecessors, (10449), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:50:22,116 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 6311 states to 6311 states and 10449 transitions.
[2023-12-25 22:50:22,116 INFO  L78                 Accepts]: Start accepts. Automaton has 6311 states and 10449 transitions. Word has length 4025
[2023-12-25 22:50:22,118 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 22:50:22,119 INFO  L495      AbstractCegarLoop]: Abstraction has 6311 states and 10449 transitions.
[2023-12-25 22:50:22,119 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 755.2) internal successors, (3776), 5 states have internal predecessors, (3776), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:50:22,119 INFO  L276                IsEmpty]: Start isEmpty. Operand 6311 states and 10449 transitions.
[2023-12-25 22:50:22,202 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 4027
[2023-12-25 22:50:22,202 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 22:50:22,203 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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1, 1, 1]
[2023-12-25 22:50:22,254 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Forceful destruction successful, exit code 0
[2023-12-25 22:50:22,403 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63,61 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 22:50:22,404 INFO  L420      AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 22:50:22,404 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 22:50:22,405 INFO  L85        PathProgramCache]: Analyzing trace with hash 138868047, now seen corresponding path program 1 times
[2023-12-25 22:50:22,405 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 22:50:22,405 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1093633664]
[2023-12-25 22:50:22,405 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:50:22,405 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 22:50:22,781 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 22:50:22,781 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1101680043]
[2023-12-25 22:50:22,782 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:50:22,782 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 22:50:22,782 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 22:50:22,783 INFO  L229       MonitoredProcess]: Starting monitored process 62 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-25 22:50:22,784 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Waiting until timeout for monitored process
[2023-12-25 22:50:26,661 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 22:50:26,765 INFO  L262         TraceCheckSpWp]: Trace formula consists of 17834 conjuncts, 17 conjunts are in the unsatisfiable core
[2023-12-25 22:50:26,803 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 22:50:27,316 INFO  L134       CoverageAnalysis]: Checked inductivity of 448 backedges. 198 proven. 250 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-25 22:50:27,316 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-12-25 22:50:27,625 INFO  L134       CoverageAnalysis]: Checked inductivity of 448 backedges. 200 proven. 0 refuted. 0 times theorem prover too weak. 248 trivial. 0 not checked.
[2023-12-25 22:50:27,625 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 22:50:27,625 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1093633664]
[2023-12-25 22:50:27,625 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 22:50:27,625 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1101680043]
[2023-12-25 22:50:27,625 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1101680043] provided 1 perfect and 1 imperfect interpolant sequences
[2023-12-25 22:50:27,625 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2023-12-25 22:50:27,626 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8] total 12
[2023-12-25 22:50:27,626 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1331180308]
[2023-12-25 22:50:27,626 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 22:50:27,628 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2023-12-25 22:50:27,628 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 22:50:27,630 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2023-12-25 22:50:27,630 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132
[2023-12-25 22:50:27,630 INFO  L87              Difference]: Start difference. First operand 6311 states and 10449 transitions. Second operand  has 6 states, 6 states have (on average 629.8333333333334) internal successors, (3779), 6 states have internal predecessors, (3779), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:50:37,450 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 22:50:37,450 INFO  L93              Difference]: Finished difference Result 28175 states and 46443 transitions.
[2023-12-25 22:50:37,450 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2023-12-25 22:50:37,451 INFO  L78                 Accepts]: Start accepts. Automaton has  has 6 states, 6 states have (on average 629.8333333333334) internal successors, (3779), 6 states have internal predecessors, (3779), 0 states have call successors, (0), 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 4026
[2023-12-25 22:50:37,454 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 22:50:37,472 INFO  L225             Difference]: With dead ends: 28175
[2023-12-25 22:50:37,472 INFO  L226             Difference]: Without dead ends: 17212
[2023-12-25 22:50:37,483 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 8051 GetRequests, 8040 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156
[2023-12-25 22:50:37,483 INFO  L413           NwaCegarLoop]: 14555 mSDtfsCounter, 24395 mSDsluCounter, 41995 mSDsCounter, 0 mSdLazyCounter, 15896 mSolverCounterSat, 456 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24395 SdHoareTripleChecker+Valid, 56550 SdHoareTripleChecker+Invalid, 16352 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 456 IncrementalHoareTripleChecker+Valid, 15896 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.3s IncrementalHoareTripleChecker+Time
[2023-12-25 22:50:37,484 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [24395 Valid, 56550 Invalid, 16352 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [456 Valid, 15896 Invalid, 0 Unknown, 0 Unchecked, 9.3s Time]
[2023-12-25 22:50:37,496 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 17212 states.
[2023-12-25 22:50:37,570 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 17212 to 6313.
[2023-12-25 22:50:37,574 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 6313 states, 6312 states have (on average 1.6557351077313054) internal successors, (10451), 6312 states have internal predecessors, (10451), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:50:37,579 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 6313 states to 6313 states and 10451 transitions.
[2023-12-25 22:50:37,579 INFO  L78                 Accepts]: Start accepts. Automaton has 6313 states and 10451 transitions. Word has length 4026
[2023-12-25 22:50:37,581 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 22:50:37,581 INFO  L495      AbstractCegarLoop]: Abstraction has 6313 states and 10451 transitions.
[2023-12-25 22:50:37,582 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 6 states, 6 states have (on average 629.8333333333334) internal successors, (3779), 6 states have internal predecessors, (3779), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:50:37,582 INFO  L276                IsEmpty]: Start isEmpty. Operand 6313 states and 10451 transitions.
[2023-12-25 22:50:37,665 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 4028
[2023-12-25 22:50:37,665 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 22:50:37,666 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 22:50:37,715 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Forceful destruction successful, exit code 0
[2023-12-25 22:50:37,866 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64,62 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 22:50:37,867 INFO  L420      AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 22:50:37,867 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 22:50:37,868 INFO  L85        PathProgramCache]: Analyzing trace with hash -134023735, now seen corresponding path program 1 times
[2023-12-25 22:50:37,868 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 22:50:37,868 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [927619352]
[2023-12-25 22:50:37,868 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:50:37,868 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 22:50:38,180 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 22:50:38,181 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [45781977]
[2023-12-25 22:50:38,181 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:50:38,182 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 22:50:38,182 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 22:50:38,183 INFO  L229       MonitoredProcess]: Starting monitored process 63 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-25 22:50:38,185 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Waiting until timeout for monitored process
[2023-12-25 22:50:42,093 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 22:50:42,201 INFO  L262         TraceCheckSpWp]: Trace formula consists of 17838 conjuncts, 17 conjunts are in the unsatisfiable core
[2023-12-25 22:50:42,240 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 22:50:42,757 INFO  L134       CoverageAnalysis]: Checked inductivity of 448 backedges. 194 proven. 254 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-25 22:50:42,757 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-12-25 22:50:42,823 INFO  L134       CoverageAnalysis]: Checked inductivity of 448 backedges. 196 proven. 0 refuted. 0 times theorem prover too weak. 252 trivial. 0 not checked.
[2023-12-25 22:50:42,823 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 22:50:42,823 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [927619352]
[2023-12-25 22:50:42,823 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 22:50:42,823 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [45781977]
[2023-12-25 22:50:42,823 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [45781977] provided 1 perfect and 1 imperfect interpolant sequences
[2023-12-25 22:50:42,823 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2023-12-25 22:50:42,824 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8] total 11
[2023-12-25 22:50:42,825 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1818491944]
[2023-12-25 22:50:42,825 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 22:50:42,827 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-12-25 22:50:42,827 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 22:50:42,829 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-12-25 22:50:42,829 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110
[2023-12-25 22:50:42,830 INFO  L87              Difference]: Start difference. First operand 6313 states and 10451 transitions. Second operand  has 5 states, 5 states have (on average 755.6) internal successors, (3778), 5 states have internal predecessors, (3778), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:50:43,083 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 22:50:43,084 INFO  L93              Difference]: Finished difference Result 22958 states and 37985 transitions.
[2023-12-25 22:50:43,084 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2023-12-25 22:50:43,085 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 755.6) internal successors, (3778), 5 states have internal predecessors, (3778), 0 states have call successors, (0), 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 4027
[2023-12-25 22:50:43,087 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 22:50:43,103 INFO  L225             Difference]: With dead ends: 22958
[2023-12-25 22:50:43,103 INFO  L226             Difference]: Without dead ends: 17212
[2023-12-25 22:50:43,111 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 8052 GetRequests, 8043 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110
[2023-12-25 22:50:43,112 INFO  L413           NwaCegarLoop]: 18361 mSDtfsCounter, 17238 mSDsluCounter, 45727 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17238 SdHoareTripleChecker+Valid, 64088 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2023-12-25 22:50:43,112 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [17238 Valid, 64088 Invalid, 35 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-12-25 22:50:43,122 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 17212 states.
[2023-12-25 22:50:43,189 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 17212 to 6313.
[2023-12-25 22:50:43,193 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 6313 states, 6312 states have (on average 1.6557351077313054) internal successors, (10451), 6312 states have internal predecessors, (10451), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:50:43,199 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 6313 states to 6313 states and 10451 transitions.
[2023-12-25 22:50:43,199 INFO  L78                 Accepts]: Start accepts. Automaton has 6313 states and 10451 transitions. Word has length 4027
[2023-12-25 22:50:43,201 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 22:50:43,201 INFO  L495      AbstractCegarLoop]: Abstraction has 6313 states and 10451 transitions.
[2023-12-25 22:50:43,202 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 755.6) internal successors, (3778), 5 states have internal predecessors, (3778), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:50:43,202 INFO  L276                IsEmpty]: Start isEmpty. Operand 6313 states and 10451 transitions.
[2023-12-25 22:50:43,284 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 4029
[2023-12-25 22:50:43,285 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 22:50:43,286 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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1, 1, 1, 1, 1, 1, 1]
[2023-12-25 22:50:43,336 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Forceful destruction successful, exit code 0
[2023-12-25 22:50:43,486 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 63 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable65
[2023-12-25 22:50:43,487 INFO  L420      AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 22:50:43,487 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 22:50:43,487 INFO  L85        PathProgramCache]: Analyzing trace with hash -1700673587, now seen corresponding path program 1 times
[2023-12-25 22:50:43,487 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 22:50:43,487 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1480335609]
[2023-12-25 22:50:43,488 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:50:43,488 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 22:50:43,718 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 22:50:43,718 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [973145659]
[2023-12-25 22:50:43,719 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:50:43,719 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 22:50:43,719 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 22:50:43,720 INFO  L229       MonitoredProcess]: Starting monitored process 64 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-25 22:50:43,721 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Waiting until timeout for monitored process
[2023-12-25 22:50:47,582 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 22:50:47,679 INFO  L262         TraceCheckSpWp]: Trace formula consists of 17841 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-12-25 22:50:47,714 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 22:50:48,441 INFO  L134       CoverageAnalysis]: Checked inductivity of 448 backedges. 190 proven. 258 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-25 22:50:48,442 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-12-25 22:50:48,532 INFO  L134       CoverageAnalysis]: Checked inductivity of 448 backedges. 192 proven. 0 refuted. 0 times theorem prover too weak. 256 trivial. 0 not checked.
[2023-12-25 22:50:48,532 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 22:50:48,532 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1480335609]
[2023-12-25 22:50:48,532 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 22:50:48,532 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [973145659]
[2023-12-25 22:50:48,532 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [973145659] provided 1 perfect and 1 imperfect interpolant sequences
[2023-12-25 22:50:48,532 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2023-12-25 22:50:48,534 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8] total 11
[2023-12-25 22:50:48,534 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [566171716]
[2023-12-25 22:50:48,534 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 22:50:48,537 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-12-25 22:50:48,537 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 22:50:48,538 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-12-25 22:50:48,538 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110
[2023-12-25 22:50:48,539 INFO  L87              Difference]: Start difference. First operand 6313 states and 10451 transitions. Second operand  has 5 states, 5 states have (on average 755.4) internal successors, (3777), 5 states have internal predecessors, (3777), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:50:48,800 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 22:50:48,800 INFO  L93              Difference]: Finished difference Result 22952 states and 37975 transitions.
[2023-12-25 22:50:48,800 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2023-12-25 22:50:48,801 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 755.4) internal successors, (3777), 5 states have internal predecessors, (3777), 0 states have call successors, (0), 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 4028
[2023-12-25 22:50:48,803 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 22:50:48,817 INFO  L225             Difference]: With dead ends: 22952
[2023-12-25 22:50:48,817 INFO  L226             Difference]: Without dead ends: 17212
[2023-12-25 22:50:48,825 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 8054 GetRequests, 8045 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110
[2023-12-25 22:50:48,825 INFO  L413           NwaCegarLoop]: 18371 mSDtfsCounter, 17241 mSDsluCounter, 45747 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17241 SdHoareTripleChecker+Valid, 64118 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2023-12-25 22:50:48,825 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [17241 Valid, 64118 Invalid, 35 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-12-25 22:50:48,835 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 17212 states.
[2023-12-25 22:50:48,906 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 17212 to 6313.
[2023-12-25 22:50:48,910 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 6313 states, 6312 states have (on average 1.6557351077313054) internal successors, (10451), 6312 states have internal predecessors, (10451), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:50:48,914 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 6313 states to 6313 states and 10451 transitions.
[2023-12-25 22:50:48,915 INFO  L78                 Accepts]: Start accepts. Automaton has 6313 states and 10451 transitions. Word has length 4028
[2023-12-25 22:50:48,916 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 22:50:48,916 INFO  L495      AbstractCegarLoop]: Abstraction has 6313 states and 10451 transitions.
[2023-12-25 22:50:48,917 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 755.4) internal successors, (3777), 5 states have internal predecessors, (3777), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:50:48,917 INFO  L276                IsEmpty]: Start isEmpty. Operand 6313 states and 10451 transitions.
[2023-12-25 22:50:48,999 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 4030
[2023-12-25 22:50:49,000 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 22:50:49,001 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 22:50:49,046 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Forceful destruction successful, exit code 0
[2023-12-25 22:50:49,201 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 64 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable66
[2023-12-25 22:50:49,201 INFO  L420      AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 22:50:49,202 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 22:50:49,202 INFO  L85        PathProgramCache]: Analyzing trace with hash 1783969163, now seen corresponding path program 1 times
[2023-12-25 22:50:49,202 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 22:50:49,202 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [524385011]
[2023-12-25 22:50:49,203 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:50:49,203 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 22:50:49,435 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 22:50:49,435 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [188639526]
[2023-12-25 22:50:49,436 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:50:49,436 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 22:50:49,436 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 22:50:49,437 INFO  L229       MonitoredProcess]: Starting monitored process 65 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-25 22:50:49,438 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Waiting until timeout for monitored process
[2023-12-25 22:50:53,566 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 22:50:53,664 INFO  L262         TraceCheckSpWp]: Trace formula consists of 17845 conjuncts, 17 conjunts are in the unsatisfiable core
[2023-12-25 22:50:53,697 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 22:50:54,210 INFO  L134       CoverageAnalysis]: Checked inductivity of 448 backedges. 186 proven. 262 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-25 22:50:54,210 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-12-25 22:50:54,270 INFO  L134       CoverageAnalysis]: Checked inductivity of 448 backedges. 188 proven. 0 refuted. 0 times theorem prover too weak. 260 trivial. 0 not checked.
[2023-12-25 22:50:54,270 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 22:50:54,270 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [524385011]
[2023-12-25 22:50:54,270 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 22:50:54,271 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [188639526]
[2023-12-25 22:50:54,271 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [188639526] provided 1 perfect and 1 imperfect interpolant sequences
[2023-12-25 22:50:54,271 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2023-12-25 22:50:54,271 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8] total 11
[2023-12-25 22:50:54,272 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [329112323]
[2023-12-25 22:50:54,272 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 22:50:54,274 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-12-25 22:50:54,274 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 22:50:54,275 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-12-25 22:50:54,275 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110
[2023-12-25 22:50:54,276 INFO  L87              Difference]: Start difference. First operand 6313 states and 10451 transitions. Second operand  has 5 states, 5 states have (on average 755.2) internal successors, (3776), 5 states have internal predecessors, (3776), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:50:54,534 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 22:50:54,534 INFO  L93              Difference]: Finished difference Result 22946 states and 37965 transitions.
[2023-12-25 22:50:54,534 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2023-12-25 22:50:54,535 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 755.2) internal successors, (3776), 5 states have internal predecessors, (3776), 0 states have call successors, (0), 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 4029
[2023-12-25 22:50:54,537 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 22:50:54,552 INFO  L225             Difference]: With dead ends: 22946
[2023-12-25 22:50:54,552 INFO  L226             Difference]: Without dead ends: 17212
[2023-12-25 22:50:54,559 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 8056 GetRequests, 8047 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110
[2023-12-25 22:50:54,559 INFO  L413           NwaCegarLoop]: 18381 mSDtfsCounter, 17244 mSDsluCounter, 45767 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17244 SdHoareTripleChecker+Valid, 64148 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2023-12-25 22:50:54,559 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [17244 Valid, 64148 Invalid, 35 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-12-25 22:50:54,568 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 17212 states.
[2023-12-25 22:50:54,629 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 17212 to 6313.
[2023-12-25 22:50:54,633 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 6313 states, 6312 states have (on average 1.6557351077313054) internal successors, (10451), 6312 states have internal predecessors, (10451), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:50:54,638 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 6313 states to 6313 states and 10451 transitions.
[2023-12-25 22:50:54,638 INFO  L78                 Accepts]: Start accepts. Automaton has 6313 states and 10451 transitions. Word has length 4029
[2023-12-25 22:50:54,640 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 22:50:54,640 INFO  L495      AbstractCegarLoop]: Abstraction has 6313 states and 10451 transitions.
[2023-12-25 22:50:54,640 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 755.2) internal successors, (3776), 5 states have internal predecessors, (3776), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:50:54,640 INFO  L276                IsEmpty]: Start isEmpty. Operand 6313 states and 10451 transitions.
[2023-12-25 22:50:54,723 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 4031
[2023-12-25 22:50:54,723 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 22:50:54,724 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-12-25 22:50:54,767 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Ended with exit code 0
[2023-12-25 22:50:54,924 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67,65 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 22:50:54,925 INFO  L420      AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 22:50:54,925 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 22:50:54,925 INFO  L85        PathProgramCache]: Analyzing trace with hash -1133799349, now seen corresponding path program 1 times
[2023-12-25 22:50:54,926 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 22:50:54,926 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2010228709]
[2023-12-25 22:50:54,926 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:50:54,926 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 22:50:55,235 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 22:50:55,235 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1053829990]
[2023-12-25 22:50:55,236 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:50:55,236 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 22:50:55,236 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 22:50:55,237 INFO  L229       MonitoredProcess]: Starting monitored process 66 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-25 22:50:55,239 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Waiting until timeout for monitored process
[2023-12-25 22:50:59,147 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 22:50:59,249 INFO  L262         TraceCheckSpWp]: Trace formula consists of 17848 conjuncts, 17 conjunts are in the unsatisfiable core
[2023-12-25 22:50:59,285 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 22:50:59,806 INFO  L134       CoverageAnalysis]: Checked inductivity of 448 backedges. 182 proven. 266 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-25 22:50:59,807 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-12-25 22:50:59,863 INFO  L134       CoverageAnalysis]: Checked inductivity of 448 backedges. 184 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked.
[2023-12-25 22:50:59,863 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 22:50:59,863 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2010228709]
[2023-12-25 22:50:59,863 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 22:50:59,863 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1053829990]
[2023-12-25 22:50:59,863 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1053829990] provided 1 perfect and 1 imperfect interpolant sequences
[2023-12-25 22:50:59,863 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2023-12-25 22:50:59,864 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8] total 11
[2023-12-25 22:50:59,864 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [376356714]
[2023-12-25 22:50:59,864 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 22:50:59,866 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-12-25 22:50:59,866 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 22:50:59,867 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-12-25 22:50:59,867 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110
[2023-12-25 22:50:59,868 INFO  L87              Difference]: Start difference. First operand 6313 states and 10451 transitions. Second operand  has 5 states, 5 states have (on average 755.0) internal successors, (3775), 5 states have internal predecessors, (3775), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:51:00,123 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 22:51:00,123 INFO  L93              Difference]: Finished difference Result 22940 states and 37955 transitions.
[2023-12-25 22:51:00,124 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2023-12-25 22:51:00,124 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 755.0) internal successors, (3775), 5 states have internal predecessors, (3775), 0 states have call successors, (0), 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 4030
[2023-12-25 22:51:00,127 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 22:51:00,142 INFO  L225             Difference]: With dead ends: 22940
[2023-12-25 22:51:00,142 INFO  L226             Difference]: Without dead ends: 17212
[2023-12-25 22:51:00,150 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 8058 GetRequests, 8049 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110
[2023-12-25 22:51:00,151 INFO  L413           NwaCegarLoop]: 18391 mSDtfsCounter, 17247 mSDsluCounter, 45787 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17247 SdHoareTripleChecker+Valid, 64178 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2023-12-25 22:51:00,151 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [17247 Valid, 64178 Invalid, 35 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-12-25 22:51:00,164 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 17212 states.
[2023-12-25 22:51:00,242 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 17212 to 6313.
[2023-12-25 22:51:00,246 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 6313 states, 6312 states have (on average 1.6557351077313054) internal successors, (10451), 6312 states have internal predecessors, (10451), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:51:00,252 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 6313 states to 6313 states and 10451 transitions.
[2023-12-25 22:51:00,252 INFO  L78                 Accepts]: Start accepts. Automaton has 6313 states and 10451 transitions. Word has length 4030
[2023-12-25 22:51:00,254 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 22:51:00,254 INFO  L495      AbstractCegarLoop]: Abstraction has 6313 states and 10451 transitions.
[2023-12-25 22:51:00,255 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 755.0) internal successors, (3775), 5 states have internal predecessors, (3775), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:51:00,255 INFO  L276                IsEmpty]: Start isEmpty. Operand 6313 states and 10451 transitions.
[2023-12-25 22:51:00,407 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 4032
[2023-12-25 22:51:00,407 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 22:51:00,408 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 22:51:00,457 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Ended with exit code 0
[2023-12-25 22:51:00,608 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 66 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable68
[2023-12-25 22:51:00,609 INFO  L420      AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 22:51:00,609 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 22:51:00,610 INFO  L85        PathProgramCache]: Analyzing trace with hash 1286690637, now seen corresponding path program 1 times
[2023-12-25 22:51:00,610 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 22:51:00,610 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [385505508]
[2023-12-25 22:51:00,610 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:51:00,610 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 22:51:00,843 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 22:51:00,843 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1370671546]
[2023-12-25 22:51:00,844 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:51:00,844 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 22:51:00,844 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 22:51:00,845 INFO  L229       MonitoredProcess]: Starting monitored process 67 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-25 22:51:00,847 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (67)] Waiting until timeout for monitored process
[2023-12-25 22:51:04,755 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 22:51:04,858 INFO  L262         TraceCheckSpWp]: Trace formula consists of 17852 conjuncts, 15 conjunts are in the unsatisfiable core
[2023-12-25 22:51:04,896 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 22:51:05,402 INFO  L134       CoverageAnalysis]: Checked inductivity of 448 backedges. 178 proven. 270 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-25 22:51:05,402 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-12-25 22:51:05,447 INFO  L134       CoverageAnalysis]: Checked inductivity of 448 backedges. 180 proven. 0 refuted. 0 times theorem prover too weak. 268 trivial. 0 not checked.
[2023-12-25 22:51:05,448 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 22:51:05,448 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [385505508]
[2023-12-25 22:51:05,448 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 22:51:05,448 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1370671546]
[2023-12-25 22:51:05,448 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1370671546] provided 1 perfect and 1 imperfect interpolant sequences
[2023-12-25 22:51:05,448 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2023-12-25 22:51:05,449 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9
[2023-12-25 22:51:05,449 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1974238295]
[2023-12-25 22:51:05,449 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 22:51:05,450 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-12-25 22:51:05,451 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 22:51:05,452 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-12-25 22:51:05,452 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72
[2023-12-25 22:51:05,452 INFO  L87              Difference]: Start difference. First operand 6313 states and 10451 transitions. Second operand  has 4 states, 4 states have (on average 943.5) internal successors, (3774), 4 states have internal predecessors, (3774), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:51:05,593 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 22:51:05,593 INFO  L93              Difference]: Finished difference Result 17227 states and 28502 transitions.
[2023-12-25 22:51:05,593 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-12-25 22:51:05,594 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 943.5) internal successors, (3774), 4 states have internal predecessors, (3774), 0 states have call successors, (0), 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 4031
[2023-12-25 22:51:05,596 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 22:51:05,605 INFO  L225             Difference]: With dead ends: 17227
[2023-12-25 22:51:05,605 INFO  L226             Difference]: Without dead ends: 11505
[2023-12-25 22:51:05,611 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 8060 GetRequests, 8053 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72
[2023-12-25 22:51:05,611 INFO  L413           NwaCegarLoop]: 9692 mSDtfsCounter, 8542 mSDsluCounter, 18707 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8542 SdHoareTripleChecker+Valid, 28399 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2023-12-25 22:51:05,611 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [8542 Valid, 28399 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-12-25 22:51:05,619 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 11505 states.
[2023-12-25 22:51:05,674 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 11505 to 6313.
[2023-12-25 22:51:05,678 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 6313 states, 6312 states have (on average 1.6557351077313054) internal successors, (10451), 6312 states have internal predecessors, (10451), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:51:05,683 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 6313 states to 6313 states and 10451 transitions.
[2023-12-25 22:51:05,684 INFO  L78                 Accepts]: Start accepts. Automaton has 6313 states and 10451 transitions. Word has length 4031
[2023-12-25 22:51:05,685 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 22:51:05,685 INFO  L495      AbstractCegarLoop]: Abstraction has 6313 states and 10451 transitions.
[2023-12-25 22:51:05,686 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 943.5) internal successors, (3774), 4 states have internal predecessors, (3774), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:51:05,686 INFO  L276                IsEmpty]: Start isEmpty. Operand 6313 states and 10451 transitions.
[2023-12-25 22:51:05,849 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 4033
[2023-12-25 22:51:05,849 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 22:51:05,850 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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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-12-25 22:51:05,904 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (67)] Forceful destruction successful, exit code 0
[2023-12-25 22:51:06,050 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 67 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable69
[2023-12-25 22:51:06,051 INFO  L420      AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 22:51:06,051 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 22:51:06,051 INFO  L85        PathProgramCache]: Analyzing trace with hash -853162295, now seen corresponding path program 1 times
[2023-12-25 22:51:06,051 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 22:51:06,051 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [712283451]
[2023-12-25 22:51:06,052 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:51:06,052 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 22:51:06,290 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 22:51:06,290 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1602357952]
[2023-12-25 22:51:06,291 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:51:06,291 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 22:51:06,291 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 22:51:06,292 INFO  L229       MonitoredProcess]: Starting monitored process 68 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-25 22:51:06,292 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (68)] Waiting until timeout for monitored process
[2023-12-25 22:51:10,226 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 22:51:10,334 INFO  L262         TraceCheckSpWp]: Trace formula consists of 17855 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-12-25 22:51:10,373 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 22:51:10,886 INFO  L134       CoverageAnalysis]: Checked inductivity of 448 backedges. 174 proven. 274 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-25 22:51:10,886 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-12-25 22:51:10,944 INFO  L134       CoverageAnalysis]: Checked inductivity of 448 backedges. 176 proven. 0 refuted. 0 times theorem prover too weak. 272 trivial. 0 not checked.
[2023-12-25 22:51:10,945 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 22:51:10,945 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [712283451]
[2023-12-25 22:51:10,945 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 22:51:10,945 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1602357952]
[2023-12-25 22:51:10,945 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1602357952] provided 1 perfect and 1 imperfect interpolant sequences
[2023-12-25 22:51:10,945 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2023-12-25 22:51:10,946 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8] total 11
[2023-12-25 22:51:10,946 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [122668095]
[2023-12-25 22:51:10,946 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 22:51:10,948 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-12-25 22:51:10,948 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 22:51:10,950 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-12-25 22:51:10,950 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110
[2023-12-25 22:51:10,950 INFO  L87              Difference]: Start difference. First operand 6313 states and 10451 transitions. Second operand  has 5 states, 5 states have (on average 754.6) internal successors, (3773), 5 states have internal predecessors, (3773), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:51:11,215 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 22:51:11,215 INFO  L93              Difference]: Finished difference Result 22928 states and 37935 transitions.
[2023-12-25 22:51:11,215 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2023-12-25 22:51:11,216 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 754.6) internal successors, (3773), 5 states have internal predecessors, (3773), 0 states have call successors, (0), 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 4032
[2023-12-25 22:51:11,218 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 22:51:11,234 INFO  L225             Difference]: With dead ends: 22928
[2023-12-25 22:51:11,234 INFO  L226             Difference]: Without dead ends: 17212
[2023-12-25 22:51:11,241 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 8062 GetRequests, 8053 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110
[2023-12-25 22:51:11,242 INFO  L413           NwaCegarLoop]: 18411 mSDtfsCounter, 17253 mSDsluCounter, 45827 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17253 SdHoareTripleChecker+Valid, 64238 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2023-12-25 22:51:11,242 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [17253 Valid, 64238 Invalid, 35 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-12-25 22:51:11,252 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 17212 states.
[2023-12-25 22:51:11,322 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 17212 to 6313.
[2023-12-25 22:51:11,326 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 6313 states, 6312 states have (on average 1.6557351077313054) internal successors, (10451), 6312 states have internal predecessors, (10451), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:51:11,331 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 6313 states to 6313 states and 10451 transitions.
[2023-12-25 22:51:11,331 INFO  L78                 Accepts]: Start accepts. Automaton has 6313 states and 10451 transitions. Word has length 4032
[2023-12-25 22:51:11,333 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 22:51:11,333 INFO  L495      AbstractCegarLoop]: Abstraction has 6313 states and 10451 transitions.
[2023-12-25 22:51:11,334 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 754.6) internal successors, (3773), 5 states have internal predecessors, (3773), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:51:11,334 INFO  L276                IsEmpty]: Start isEmpty. Operand 6313 states and 10451 transitions.
[2023-12-25 22:51:11,506 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 4034
[2023-12-25 22:51:11,506 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 22:51:11,507 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 22:51:11,559 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (68)] Ended with exit code 0
[2023-12-25 22:51:11,707 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70,68 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 22:51:11,708 INFO  L420      AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 22:51:11,708 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 22:51:11,708 INFO  L85        PathProgramCache]: Analyzing trace with hash -2035680497, now seen corresponding path program 1 times
[2023-12-25 22:51:11,708 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 22:51:11,708 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1860665081]
[2023-12-25 22:51:11,709 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:51:11,709 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 22:51:11,941 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 22:51:11,942 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1458149142]
[2023-12-25 22:51:11,942 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:51:11,942 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 22:51:11,943 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 22:51:11,943 INFO  L229       MonitoredProcess]: Starting monitored process 69 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-25 22:51:11,944 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (69)] Waiting until timeout for monitored process
[2023-12-25 22:51:15,807 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 22:51:15,915 INFO  L262         TraceCheckSpWp]: Trace formula consists of 17859 conjuncts, 17 conjunts are in the unsatisfiable core
[2023-12-25 22:51:15,953 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 22:51:16,462 INFO  L134       CoverageAnalysis]: Checked inductivity of 448 backedges. 170 proven. 278 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-25 22:51:16,462 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-12-25 22:51:16,517 INFO  L134       CoverageAnalysis]: Checked inductivity of 448 backedges. 172 proven. 0 refuted. 0 times theorem prover too weak. 276 trivial. 0 not checked.
[2023-12-25 22:51:16,517 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 22:51:16,517 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1860665081]
[2023-12-25 22:51:16,517 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 22:51:16,517 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1458149142]
[2023-12-25 22:51:16,518 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1458149142] provided 1 perfect and 1 imperfect interpolant sequences
[2023-12-25 22:51:16,518 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2023-12-25 22:51:16,518 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8] total 11
[2023-12-25 22:51:16,518 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1750986373]
[2023-12-25 22:51:16,518 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 22:51:16,520 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-12-25 22:51:16,520 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 22:51:16,522 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-12-25 22:51:16,522 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110
[2023-12-25 22:51:16,522 INFO  L87              Difference]: Start difference. First operand 6313 states and 10451 transitions. Second operand  has 5 states, 5 states have (on average 754.4) internal successors, (3772), 5 states have internal predecessors, (3772), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:51:16,783 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 22:51:16,783 INFO  L93              Difference]: Finished difference Result 22922 states and 37925 transitions.
[2023-12-25 22:51:16,784 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2023-12-25 22:51:16,785 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 754.4) internal successors, (3772), 5 states have internal predecessors, (3772), 0 states have call successors, (0), 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 4033
[2023-12-25 22:51:16,787 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 22:51:16,803 INFO  L225             Difference]: With dead ends: 22922
[2023-12-25 22:51:16,804 INFO  L226             Difference]: Without dead ends: 17212
[2023-12-25 22:51:16,812 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 8064 GetRequests, 8055 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110
[2023-12-25 22:51:16,812 INFO  L413           NwaCegarLoop]: 18421 mSDtfsCounter, 17256 mSDsluCounter, 45847 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17256 SdHoareTripleChecker+Valid, 64268 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2023-12-25 22:51:16,812 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [17256 Valid, 64268 Invalid, 35 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-12-25 22:51:16,824 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 17212 states.
[2023-12-25 22:51:16,897 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 17212 to 6313.
[2023-12-25 22:51:16,901 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 6313 states, 6312 states have (on average 1.6557351077313054) internal successors, (10451), 6312 states have internal predecessors, (10451), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:51:16,906 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 6313 states to 6313 states and 10451 transitions.
[2023-12-25 22:51:16,907 INFO  L78                 Accepts]: Start accepts. Automaton has 6313 states and 10451 transitions. Word has length 4033
[2023-12-25 22:51:16,908 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 22:51:16,908 INFO  L495      AbstractCegarLoop]: Abstraction has 6313 states and 10451 transitions.
[2023-12-25 22:51:16,909 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 754.4) internal successors, (3772), 5 states have internal predecessors, (3772), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:51:16,909 INFO  L276                IsEmpty]: Start isEmpty. Operand 6313 states and 10451 transitions.
[2023-12-25 22:51:16,993 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 4035
[2023-12-25 22:51:16,993 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 22:51:16,994 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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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-12-25 22:51:17,044 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (69)] Forceful destruction successful, exit code 0
[2023-12-25 22:51:17,194 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 69 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable71
[2023-12-25 22:51:17,195 INFO  L420      AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 22:51:17,195 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 22:51:17,195 INFO  L85        PathProgramCache]: Analyzing trace with hash 1293005639, now seen corresponding path program 1 times
[2023-12-25 22:51:17,195 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 22:51:17,196 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [712906888]
[2023-12-25 22:51:17,196 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:51:17,196 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 22:51:17,499 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 22:51:17,499 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1888126729]
[2023-12-25 22:51:17,500 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:51:17,500 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 22:51:17,500 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 22:51:17,501 INFO  L229       MonitoredProcess]: Starting monitored process 70 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-25 22:51:17,502 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (70)] Waiting until timeout for monitored process
[2023-12-25 22:51:21,394 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 22:51:21,509 INFO  L262         TraceCheckSpWp]: Trace formula consists of 17862 conjuncts, 15 conjunts are in the unsatisfiable core
[2023-12-25 22:51:21,549 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 22:51:22,052 INFO  L134       CoverageAnalysis]: Checked inductivity of 448 backedges. 166 proven. 282 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-25 22:51:22,052 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-12-25 22:51:22,098 INFO  L134       CoverageAnalysis]: Checked inductivity of 448 backedges. 168 proven. 0 refuted. 0 times theorem prover too weak. 280 trivial. 0 not checked.
[2023-12-25 22:51:22,098 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 22:51:22,098 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [712906888]
[2023-12-25 22:51:22,098 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 22:51:22,098 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1888126729]
[2023-12-25 22:51:22,098 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1888126729] provided 1 perfect and 1 imperfect interpolant sequences
[2023-12-25 22:51:22,098 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2023-12-25 22:51:22,099 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9
[2023-12-25 22:51:22,099 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2010363359]
[2023-12-25 22:51:22,099 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 22:51:22,101 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-12-25 22:51:22,101 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 22:51:22,103 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-12-25 22:51:22,103 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72
[2023-12-25 22:51:22,103 INFO  L87              Difference]: Start difference. First operand 6313 states and 10451 transitions. Second operand  has 4 states, 4 states have (on average 942.75) internal successors, (3771), 4 states have internal predecessors, (3771), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:51:22,251 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 22:51:22,251 INFO  L93              Difference]: Finished difference Result 17227 states and 28502 transitions.
[2023-12-25 22:51:22,251 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-12-25 22:51:22,252 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 942.75) internal successors, (3771), 4 states have internal predecessors, (3771), 0 states have call successors, (0), 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 4034
[2023-12-25 22:51:22,255 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 22:51:22,265 INFO  L225             Difference]: With dead ends: 17227
[2023-12-25 22:51:22,265 INFO  L226             Difference]: Without dead ends: 11523
[2023-12-25 22:51:22,271 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 8066 GetRequests, 8059 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72
[2023-12-25 22:51:22,271 INFO  L413           NwaCegarLoop]: 9722 mSDtfsCounter, 8551 mSDsluCounter, 18737 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8551 SdHoareTripleChecker+Valid, 28459 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2023-12-25 22:51:22,271 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [8551 Valid, 28459 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-12-25 22:51:22,278 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 11523 states.
[2023-12-25 22:51:22,333 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 11523 to 6313.
[2023-12-25 22:51:22,338 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 6313 states, 6312 states have (on average 1.6557351077313054) internal successors, (10451), 6312 states have internal predecessors, (10451), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:51:22,343 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 6313 states to 6313 states and 10451 transitions.
[2023-12-25 22:51:22,344 INFO  L78                 Accepts]: Start accepts. Automaton has 6313 states and 10451 transitions. Word has length 4034
[2023-12-25 22:51:22,345 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 22:51:22,345 INFO  L495      AbstractCegarLoop]: Abstraction has 6313 states and 10451 transitions.
[2023-12-25 22:51:22,346 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 942.75) internal successors, (3771), 4 states have internal predecessors, (3771), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:51:22,346 INFO  L276                IsEmpty]: Start isEmpty. Operand 6313 states and 10451 transitions.
[2023-12-25 22:51:22,431 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 4036
[2023-12-25 22:51:22,431 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 22:51:22,432 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 22:51:22,489 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (70)] Forceful destruction successful, exit code 0
[2023-12-25 22:51:22,632 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72,70 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 22:51:22,633 INFO  L420      AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 22:51:22,633 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 22:51:22,633 INFO  L85        PathProgramCache]: Analyzing trace with hash -116277039, now seen corresponding path program 1 times
[2023-12-25 22:51:22,633 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 22:51:22,633 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [55436770]
[2023-12-25 22:51:22,634 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:51:22,634 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 22:51:22,862 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 22:51:22,862 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1057684199]
[2023-12-25 22:51:22,863 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:51:22,863 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 22:51:22,863 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 22:51:22,864 INFO  L229       MonitoredProcess]: Starting monitored process 71 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-25 22:51:22,864 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (71)] Waiting until timeout for monitored process
[2023-12-25 22:51:26,885 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 22:51:26,980 INFO  L262         TraceCheckSpWp]: Trace formula consists of 17866 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-12-25 22:51:27,014 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 22:51:27,526 INFO  L134       CoverageAnalysis]: Checked inductivity of 448 backedges. 162 proven. 286 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-25 22:51:27,527 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-12-25 22:51:27,583 INFO  L134       CoverageAnalysis]: Checked inductivity of 448 backedges. 164 proven. 0 refuted. 0 times theorem prover too weak. 284 trivial. 0 not checked.
[2023-12-25 22:51:27,583 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 22:51:27,583 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [55436770]
[2023-12-25 22:51:27,583 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 22:51:27,583 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1057684199]
[2023-12-25 22:51:27,583 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1057684199] provided 1 perfect and 1 imperfect interpolant sequences
[2023-12-25 22:51:27,583 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2023-12-25 22:51:27,584 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8] total 11
[2023-12-25 22:51:27,584 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1782950994]
[2023-12-25 22:51:27,584 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 22:51:27,586 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-12-25 22:51:27,586 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 22:51:27,587 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-12-25 22:51:27,587 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110
[2023-12-25 22:51:27,588 INFO  L87              Difference]: Start difference. First operand 6313 states and 10451 transitions. Second operand  has 5 states, 5 states have (on average 754.0) internal successors, (3770), 5 states have internal predecessors, (3770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:51:27,846 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 22:51:27,846 INFO  L93              Difference]: Finished difference Result 22910 states and 37905 transitions.
[2023-12-25 22:51:27,847 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2023-12-25 22:51:27,847 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 754.0) internal successors, (3770), 5 states have internal predecessors, (3770), 0 states have call successors, (0), 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 4035
[2023-12-25 22:51:27,850 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 22:51:27,865 INFO  L225             Difference]: With dead ends: 22910
[2023-12-25 22:51:27,865 INFO  L226             Difference]: Without dead ends: 17212
[2023-12-25 22:51:27,873 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 8068 GetRequests, 8059 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110
[2023-12-25 22:51:27,873 INFO  L413           NwaCegarLoop]: 18441 mSDtfsCounter, 17262 mSDsluCounter, 45887 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17262 SdHoareTripleChecker+Valid, 64328 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2023-12-25 22:51:27,873 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [17262 Valid, 64328 Invalid, 35 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-12-25 22:51:27,883 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 17212 states.
[2023-12-25 22:51:27,950 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 17212 to 6313.
[2023-12-25 22:51:27,954 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 6313 states, 6312 states have (on average 1.6557351077313054) internal successors, (10451), 6312 states have internal predecessors, (10451), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:51:27,959 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 6313 states to 6313 states and 10451 transitions.
[2023-12-25 22:51:27,960 INFO  L78                 Accepts]: Start accepts. Automaton has 6313 states and 10451 transitions. Word has length 4035
[2023-12-25 22:51:27,961 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 22:51:27,961 INFO  L495      AbstractCegarLoop]: Abstraction has 6313 states and 10451 transitions.
[2023-12-25 22:51:27,962 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 754.0) internal successors, (3770), 5 states have internal predecessors, (3770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:51:27,962 INFO  L276                IsEmpty]: Start isEmpty. Operand 6313 states and 10451 transitions.
[2023-12-25 22:51:28,047 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 4037
[2023-12-25 22:51:28,047 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 22:51:28,048 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 22:51:28,100 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (71)] Forceful destruction successful, exit code 0
[2023-12-25 22:51:28,248 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73,71 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 22:51:28,249 INFO  L420      AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 22:51:28,249 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 22:51:28,249 INFO  L85        PathProgramCache]: Analyzing trace with hash -885998139, now seen corresponding path program 1 times
[2023-12-25 22:51:28,250 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 22:51:28,250 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [316583057]
[2023-12-25 22:51:28,250 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:51:28,250 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 22:51:28,492 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 22:51:28,492 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1252427670]
[2023-12-25 22:51:28,493 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:51:28,493 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 22:51:28,494 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 22:51:28,494 INFO  L229       MonitoredProcess]: Starting monitored process 72 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-25 22:51:28,495 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (72)] Waiting until timeout for monitored process
Received shutdown request...
[2023-12-25 22:51:32,011 WARN  L340       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end
[2023-12-25 22:51:32,014 WARN  L340       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (72)] Timeout while monitored process is still running, waiting 1000 ms for graceful end
[2023-12-25 22:51:32,583 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 22:51:32,686 INFO  L262         TraceCheckSpWp]: Trace formula consists of 17869 conjuncts, 17 conjunts are in the unsatisfiable core
[2023-12-25 22:51:32,721 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 22:51:33,030 INFO  L805   garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining)
[2023-12-25 22:51:33,080 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (72)] Forceful destruction successful, exit code 0
[2023-12-25 22:51:33,212 WARN  L435       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forcibly destroying the process
[2023-12-25 22:51:33,244 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74,72 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 22:51:33,245 WARN  L619      AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was analyzing trace of length 4037 with TraceHistMax 2,while TraceCheckSpWp was constructing forward predicates,while executing Executor.
[2023-12-25 22:51:33,249 INFO  L445         BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:51:33,250 INFO  L179   ceAbstractionStarter]: Computing trace abstraction results
[2023-12-25 22:51:33,251 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.12 10:51:33 BoogieIcfgContainer
[2023-12-25 22:51:33,251 INFO  L131        PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2023-12-25 22:51:33,252 INFO  L158              Benchmark]: Toolchain (without parser) took 774542.59ms. Allocated memory was 188.7MB in the beginning and 4.1GB in the end (delta: 4.0GB). Free memory was 142.8MB in the beginning and 2.4GB in the end (delta: -2.2GB). Peak memory consumption was 1.7GB. Max. memory is 8.0GB.
[2023-12-25 22:51:33,252 INFO  L158              Benchmark]: CDTParser took 0.13ms. Allocated memory is still 188.7MB. Free memory is still 146.0MB. There was no memory consumed. Max. memory is 8.0GB.
[2023-12-25 22:51:33,252 INFO  L158              Benchmark]: CACSL2BoogieTranslator took 1529.99ms. Allocated memory was 188.7MB in the beginning and 263.2MB in the end (delta: 74.4MB). Free memory was 142.3MB in the beginning and 139.8MB in the end (delta: 2.6MB). Peak memory consumption was 147.1MB. Max. memory is 8.0GB.
[2023-12-25 22:51:33,252 INFO  L158              Benchmark]: Boogie Procedure Inliner took 2069.40ms. Allocated memory was 263.2MB in the beginning and 868.2MB in the end (delta: 605.0MB). Free memory was 139.2MB in the beginning and 488.4MB in the end (delta: -349.2MB). Peak memory consumption was 263.2MB. Max. memory is 8.0GB.
[2023-12-25 22:51:33,252 INFO  L158              Benchmark]: Boogie Preprocessor took 2315.80ms. Allocated memory was 868.2MB in the beginning and 2.6GB in the end (delta: 1.7GB). Free memory was 488.4MB in the beginning and 2.1GB in the end (delta: -1.6GB). Peak memory consumption was 189.8MB. Max. memory is 8.0GB.
[2023-12-25 22:51:33,252 INFO  L158              Benchmark]: RCFGBuilder took 11781.23ms. Allocated memory was 2.6GB in the beginning and 3.9GB in the end (delta: 1.3GB). Free memory was 2.1GB in the beginning and 3.0GB in the end (delta: -918.1MB). Peak memory consumption was 385.8MB. Max. memory is 8.0GB.
[2023-12-25 22:51:33,252 INFO  L158              Benchmark]: TraceAbstraction took 756838.69ms. Allocated memory was 3.9GB in the beginning and 4.1GB in the end (delta: 262.1MB). Free memory was 3.0GB in the beginning and 2.4GB in the end (delta: 678.1MB). Peak memory consumption was 940.2MB. Max. memory is 8.0GB.
[2023-12-25 22:51:33,253 INFO  L338   ainManager$Toolchain]: #######################  End [Toolchain 1] #######################
 --- Results ---
 * Results from de.uni_freiburg.informatik.ultimate.core:
  - StatisticsResult: Toolchain Benchmarks
    Benchmark results are:
 * CDTParser took 0.13ms. Allocated memory is still 188.7MB. Free memory is still 146.0MB. There was no memory consumed. Max. memory is 8.0GB.
 * CACSL2BoogieTranslator took 1529.99ms. Allocated memory was 188.7MB in the beginning and 263.2MB in the end (delta: 74.4MB). Free memory was 142.3MB in the beginning and 139.8MB in the end (delta: 2.6MB). Peak memory consumption was 147.1MB. Max. memory is 8.0GB.
 * Boogie Procedure Inliner took 2069.40ms. Allocated memory was 263.2MB in the beginning and 868.2MB in the end (delta: 605.0MB). Free memory was 139.2MB in the beginning and 488.4MB in the end (delta: -349.2MB). Peak memory consumption was 263.2MB. Max. memory is 8.0GB.
 * Boogie Preprocessor took 2315.80ms. Allocated memory was 868.2MB in the beginning and 2.6GB in the end (delta: 1.7GB). Free memory was 488.4MB in the beginning and 2.1GB in the end (delta: -1.6GB). Peak memory consumption was 189.8MB. Max. memory is 8.0GB.
 * RCFGBuilder took 11781.23ms. Allocated memory was 2.6GB in the beginning and 3.9GB in the end (delta: 1.3GB). Free memory was 2.1GB in the beginning and 3.0GB in the end (delta: -918.1MB). Peak memory consumption was 385.8MB. Max. memory is 8.0GB.
 * TraceAbstraction took 756838.69ms. Allocated memory was 3.9GB in the beginning and 4.1GB in the end (delta: 262.1MB). Free memory was 3.0GB in the beginning and 2.4GB in the end (delta: 678.1MB). Peak memory consumption was 940.2MB. Max. memory is 8.0GB.
 * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction:
  - StatisticsResult: ErrorAutomatonStatistics
    NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0
  - TimeoutResultAtElement [Line: 21]: Timeout (TraceAbstraction)
    Unable to prove that a call to reach_error is unreachable (line 21). Cancelled while NwaCegarLoop was analyzing trace of length 4037 with TraceHistMax 2,while TraceCheckSpWp was constructing forward predicates,while executing Executor.
  - StatisticsResult: Ultimate Automizer benchmark data
    CFG has 1 procedures, 5411 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 756.8s, OverallIterations: 75, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 7.8s, AutomataDifference: 361.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1447436 SdHoareTripleChecker+Valid, 338.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1447436 mSDsluCounter, 2742395 SdHoareTripleChecker+Invalid, 273.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1658385 mSDsCounter, 26765 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 512095 IncrementalHoareTripleChecker+Invalid, 538860 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 26765 mSolverCounterUnsat, 1084010 mSDtfsCounter, 512095 mSolverCounterSat, 4.9s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 552095 GetRequests, 551445 SyntacticMatches, 0 SemanticMatches, 650 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 181 ImplicationChecksByTransitivity, 3.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=6313occurred in iteration=65, InterpolantAutomatonStates: 441, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 6.3s AutomataMinimizationTime, 74 MinimizatonAttempts, 442255 StatesRemovedByMinimization, 73 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 76.7s SsaConstructionTime, 160.8s SatisfiabilityAnalysisTime, 62.5s InterpolantComputationTime, 282340 NumberOfCodeBlocks, 282340 NumberOfCodeBlocksAsserted, 74 NumberOfCheckSat, 554300 ConstructedInterpolants, 0 QuantifiedInterpolants, 662345 SizeOfPredicates, 287 NumberOfNonLiveVariables, 1242721 ConjunctsInSsa, 1182 ConjunctsInUnsatCore, 142 InterpolantComputations, 74 PerfectInterpolantSequences, 38323/61824 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available
RESULT: Ultimate could not prove your program: Timeout
Completed graceful shutdown