/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.rether.4.prop1-back-serstep.c


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


This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m
[2023-12-25 21:31:27,248 INFO  L188        SettingsManager]: Resetting all preferences to default values...
[2023-12-25 21:31:27,310 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 21:31:27,314 WARN  L101        SettingsManager]: Preference file contains the following unknown settings:
[2023-12-25 21:31:27,314 WARN  L103        SettingsManager]:   * de.uni_freiburg.informatik.ultimate.core.Log level for class
[2023-12-25 21:31:27,341 INFO  L130        SettingsManager]: Preferences different from defaults after loading the file:
[2023-12-25 21:31:27,341 INFO  L151        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2023-12-25 21:31:27,341 INFO  L153        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2023-12-25 21:31:27,342 INFO  L151        SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults:
[2023-12-25 21:31:27,345 INFO  L153        SettingsManager]:  * Use memory slicer=true
[2023-12-25 21:31:27,345 INFO  L151        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2023-12-25 21:31:27,346 INFO  L153        SettingsManager]:  * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2023-12-25 21:31:27,346 INFO  L151        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2023-12-25 21:31:27,347 INFO  L153        SettingsManager]:  * Create parallel compositions if possible=false
[2023-12-25 21:31:27,347 INFO  L153        SettingsManager]:  * Use SBE=true
[2023-12-25 21:31:27,347 INFO  L151        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2023-12-25 21:31:27,347 INFO  L153        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2023-12-25 21:31:27,348 INFO  L153        SettingsManager]:  * Overapproximate operations on floating types=true
[2023-12-25 21:31:27,348 INFO  L153        SettingsManager]:  * Check division by zero=IGNORE
[2023-12-25 21:31:27,348 INFO  L153        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2023-12-25 21:31:27,348 INFO  L153        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2023-12-25 21:31:27,348 INFO  L153        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2023-12-25 21:31:27,348 INFO  L153        SettingsManager]:  * Allow undefined functions=false
[2023-12-25 21:31:27,349 INFO  L153        SettingsManager]:  * Check if freed pointer was valid=false
[2023-12-25 21:31:27,349 INFO  L153        SettingsManager]:  * Use constant arrays=true
[2023-12-25 21:31:27,349 INFO  L151        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2023-12-25 21:31:27,349 INFO  L153        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2023-12-25 21:31:27,349 INFO  L153        SettingsManager]:  * Only consider context switches at boundaries of atomic blocks=true
[2023-12-25 21:31:27,350 INFO  L153        SettingsManager]:  * SMT solver=External_DefaultMode
[2023-12-25 21:31:27,350 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2023-12-25 21:31:27,350 INFO  L151        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2023-12-25 21:31:27,351 INFO  L153        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2023-12-25 21:31:27,351 INFO  L153        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopHeads
[2023-12-25 21:31:27,351 INFO  L153        SettingsManager]:  * Trace refinement strategy=CAMEL
[2023-12-25 21:31:27,351 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2023-12-25 21:31:27,351 INFO  L153        SettingsManager]:  * Apply one-shot large block encoding in concurrent analysis=false
[2023-12-25 21:31:27,351 INFO  L153        SettingsManager]:  * Automaton type used in concurrency analysis=PETRI_NET
[2023-12-25 21:31:27,351 INFO  L153        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2023-12-25 21:31:27,351 INFO  L153        SettingsManager]:  * Order on configurations for Petri net unfoldings=DBO
[2023-12-25 21:31:27,351 INFO  L153        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2023-12-25 21:31:27,351 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$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true
[2023-12-25 21:31:27,534 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2023-12-25 21:31:27,563 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2023-12-25 21:31:27,565 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2023-12-25 21:31:27,566 INFO  L270        PluginConnector]: Initializing CDTParser...
[2023-12-25 21:31:27,566 INFO  L274        PluginConnector]: CDTParser initialized
[2023-12-25 21:31:27,567 INFO  L431   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.rether.4.prop1-back-serstep.c
[2023-12-25 21:31:28,595 INFO  L533              CDTParser]: Created temporary CDT project at NULL
[2023-12-25 21:31:28,965 INFO  L384              CDTParser]: Found 1 translation units.
[2023-12-25 21:31:28,966 INFO  L180              CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.rether.4.prop1-back-serstep.c
[2023-12-25 21:31:28,994 INFO  L427              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7b7c3a36b/1dbc8d7a0f354b7dbfb4f17a723dc0ea/FLAG0635495df
[2023-12-25 21:31:29,008 INFO  L435              CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7b7c3a36b/1dbc8d7a0f354b7dbfb4f17a723dc0ea
[2023-12-25 21:31:29,010 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2023-12-25 21:31:29,012 INFO  L133        ToolchainWalker]: Walking toolchain with 5 elements.
[2023-12-25 21:31:29,013 INFO  L112        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2023-12-25 21:31:29,013 INFO  L270        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2023-12-25 21:31:29,017 INFO  L274        PluginConnector]: CACSL2BoogieTranslator initialized
[2023-12-25 21:31:29,017 INFO  L184        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.12 09:31:29" (1/1) ...
[2023-12-25 21:31:29,018 INFO  L204        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5748ee5c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 09:31:29, skipping insertion in model container
[2023-12-25 21:31:29,018 INFO  L184        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.12 09:31:29" (1/1) ...
[2023-12-25 21:31:29,108 INFO  L177         MainTranslator]: Built tables and reachable declarations
[2023-12-25 21:31:29,300 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.rether.4.prop1-back-serstep.c[1174,1187]
[2023-12-25 21:31:30,076 INFO  L209          PostProcessor]: Analyzing one entry point: main
[2023-12-25 21:31:30,086 INFO  L202         MainTranslator]: Completed pre-run
[2023-12-25 21:31:30,094 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.rether.4.prop1-back-serstep.c[1174,1187]
[2023-12-25 21:31:30,541 INFO  L209          PostProcessor]: Analyzing one entry point: main
[2023-12-25 21:31:30,552 INFO  L206         MainTranslator]: Completed translation
[2023-12-25 21:31:30,552 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 09:31:30 WrapperNode
[2023-12-25 21:31:30,552 INFO  L131        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2023-12-25 21:31:30,554 INFO  L112        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2023-12-25 21:31:30,554 INFO  L270        PluginConnector]: Initializing Boogie Procedure Inliner...
[2023-12-25 21:31:30,554 INFO  L274        PluginConnector]: Boogie Procedure Inliner initialized
[2023-12-25 21:31:30,558 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 09:31:30" (1/1) ...
[2023-12-25 21:31:30,757 INFO  L184        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 09:31:30" (1/1) ...
[2023-12-25 21:31:33,668 INFO  L138                Inliner]: procedures = 17, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 38310
[2023-12-25 21:31:33,668 INFO  L131        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2023-12-25 21:31:33,669 INFO  L112        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2023-12-25 21:31:33,669 INFO  L270        PluginConnector]: Initializing Boogie Preprocessor...
[2023-12-25 21:31:33,669 INFO  L274        PluginConnector]: Boogie Preprocessor initialized
[2023-12-25 21:31:33,676 INFO  L184        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 09:31:30" (1/1) ...
[2023-12-25 21:31:33,676 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 09:31:30" (1/1) ...
[2023-12-25 21:31:34,528 INFO  L184        PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 09:31:30" (1/1) ...
[2023-12-25 21:31:35,049 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 21:31:35,049 INFO  L184        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 09:31:30" (1/1) ...
[2023-12-25 21:31:35,049 INFO  L184        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 09:31:30" (1/1) ...
[2023-12-25 21:31:36,182 INFO  L184        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 09:31:30" (1/1) ...
[2023-12-25 21:31:36,263 INFO  L184        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 09:31:30" (1/1) ...
[2023-12-25 21:31:36,394 INFO  L184        PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 09:31:30" (1/1) ...
[2023-12-25 21:31:36,487 INFO  L184        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 09:31:30" (1/1) ...
[2023-12-25 21:31:37,078 INFO  L131        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2023-12-25 21:31:37,082 INFO  L112        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2023-12-25 21:31:37,082 INFO  L270        PluginConnector]: Initializing RCFGBuilder...
[2023-12-25 21:31:37,082 INFO  L274        PluginConnector]: RCFGBuilder initialized
[2023-12-25 21:31:37,083 INFO  L184        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 09:31:30" (1/1) ...
[2023-12-25 21:31:37,113 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2023-12-25 21:31:37,121 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 21:31:37,164 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 21:31:37,234 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2023-12-25 21:31:37,234 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int#0
[2023-12-25 21:31:37,234 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2023-12-25 21:31:37,235 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2023-12-25 21:31:37,220 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 21:31:38,600 INFO  L241             CfgBuilder]: Building ICFG
[2023-12-25 21:31:38,602 INFO  L267             CfgBuilder]: Building CFG for each procedure with an implementation
[2023-12-25 21:31:51,924 INFO  L282             CfgBuilder]: Performing block encoding
[2023-12-25 21:31:52,547 INFO  L304             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2023-12-25 21:31:52,547 INFO  L309             CfgBuilder]: Removed 1 assume(true) statements.
[2023-12-25 21:31:52,547 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.12 09:31:52 BoogieIcfgContainer
[2023-12-25 21:31:52,548 INFO  L131        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2023-12-25 21:31:52,550 INFO  L112        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2023-12-25 21:31:52,550 INFO  L270        PluginConnector]: Initializing TraceAbstraction...
[2023-12-25 21:31:52,552 INFO  L274        PluginConnector]: TraceAbstraction initialized
[2023-12-25 21:31:52,552 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.12 09:31:29" (1/3) ...
[2023-12-25 21:31:52,553 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f3daff9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.12 09:31:52, skipping insertion in model container
[2023-12-25 21:31:52,553 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 09:31:30" (2/3) ...
[2023-12-25 21:31:52,553 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f3daff9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.12 09:31:52, skipping insertion in model container
[2023-12-25 21:31:52,553 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.12 09:31:52" (3/3) ...
[2023-12-25 21:31:52,554 INFO  L112   eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.rether.4.prop1-back-serstep.c
[2023-12-25 21:31:52,565 INFO  L204   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2023-12-25 21:31:52,566 INFO  L163   ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2023-12-25 21:31:52,679 INFO  L356      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2023-12-25 21:31:52,683 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;@396b3f11, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2023-12-25 21:31:52,684 INFO  L358      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2023-12-25 21:31:52,703 INFO  L276                IsEmpty]: Start isEmpty. Operand  has 8594 states, 8592 states have (on average 1.6673649906890131) internal successors, (14326), 8593 states have internal predecessors, (14326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 21:31:52,741 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 989
[2023-12-25 21:31:52,741 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 21:31:52,743 INFO  L195           NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-12-25 21:31:52,744 INFO  L420      AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 21:31:52,751 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 21:31:52,753 INFO  L85        PathProgramCache]: Analyzing trace with hash -1721653481, now seen corresponding path program 1 times
[2023-12-25 21:31:52,759 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 21:31:52,760 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [118090786]
[2023-12-25 21:31:52,760 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 21:31:52,760 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 21:31:53,655 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 21:31:55,903 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 21:31:55,903 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 21:31:55,904 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [118090786]
[2023-12-25 21:31:55,904 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [118090786] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 21:31:55,904 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 21:31:55,904 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-12-25 21:31:55,906 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [440124386]
[2023-12-25 21:31:55,907 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 21:31:55,912 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-12-25 21:31:55,913 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 21:31:55,944 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-12-25 21:31:55,945 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-12-25 21:31:55,963 INFO  L87              Difference]: Start difference. First operand  has 8594 states, 8592 states have (on average 1.6673649906890131) internal successors, (14326), 8593 states have internal predecessors, (14326), 0 states have call successors, (0), 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 247.0) internal successors, (988), 4 states have internal predecessors, (988), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 21:31:56,283 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 21:31:56,284 INFO  L93              Difference]: Finished difference Result 16839 states and 28073 transitions.
[2023-12-25 21:31:56,285 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-12-25 21:31:56,286 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 247.0) internal successors, (988), 4 states have internal predecessors, (988), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 988
[2023-12-25 21:31:56,290 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 21:31:56,327 INFO  L225             Difference]: With dead ends: 16839
[2023-12-25 21:31:56,327 INFO  L226             Difference]: Without dead ends: 8594
[2023-12-25 21:31:56,343 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 21:31:56,346 INFO  L413           NwaCegarLoop]: 14319 mSDtfsCounter, 1 mSDsluCounter, 28633 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 42952 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-12-25 21:31:56,347 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 42952 Invalid, 13 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-12-25 21:31:56,369 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 8594 states.
[2023-12-25 21:31:56,491 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 8594 to 8594.
[2023-12-25 21:31:56,514 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 8594 states, 8593 states have (on average 1.6669382055161177) internal successors, (14324), 8593 states have internal predecessors, (14324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 21:31:56,535 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 8594 states to 8594 states and 14324 transitions.
[2023-12-25 21:31:56,536 INFO  L78                 Accepts]: Start accepts. Automaton has 8594 states and 14324 transitions. Word has length 988
[2023-12-25 21:31:56,538 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 21:31:56,539 INFO  L495      AbstractCegarLoop]: Abstraction has 8594 states and 14324 transitions.
[2023-12-25 21:31:56,539 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 247.0) internal successors, (988), 4 states have internal predecessors, (988), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 21:31:56,540 INFO  L276                IsEmpty]: Start isEmpty. Operand 8594 states and 14324 transitions.
[2023-12-25 21:31:56,554 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 990
[2023-12-25 21:31:56,554 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 21:31:56,555 INFO  L195           NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-12-25 21:31:56,555 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2023-12-25 21:31:56,555 INFO  L420      AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 21:31:56,556 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 21:31:56,556 INFO  L85        PathProgramCache]: Analyzing trace with hash -1829919507, now seen corresponding path program 1 times
[2023-12-25 21:31:56,556 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 21:31:56,557 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [335513978]
[2023-12-25 21:31:56,557 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 21:31:56,557 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 21:31:57,004 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 21:31:57,946 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 21:31:57,947 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 21:31:57,947 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [335513978]
[2023-12-25 21:31:57,947 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [335513978] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 21:31:57,947 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 21:31:57,947 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-12-25 21:31:57,947 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1967105705]
[2023-12-25 21:31:57,948 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 21:31:57,951 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-12-25 21:31:57,953 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 21:31:57,954 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-12-25 21:31:57,954 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-12-25 21:31:57,955 INFO  L87              Difference]: Start difference. First operand 8594 states and 14324 transitions. Second operand  has 4 states, 4 states have (on average 247.25) internal successors, (989), 4 states have internal predecessors, (989), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 21:31:58,150 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 21:31:58,151 INFO  L93              Difference]: Finished difference Result 16842 states and 28071 transitions.
[2023-12-25 21:31:58,151 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-12-25 21:31:58,151 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 247.25) internal successors, (989), 4 states have internal predecessors, (989), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 989
[2023-12-25 21:31:58,152 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 21:31:58,174 INFO  L225             Difference]: With dead ends: 16842
[2023-12-25 21:31:58,174 INFO  L226             Difference]: Without dead ends: 8597
[2023-12-25 21:31:58,184 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 21:31:58,185 INFO  L413           NwaCegarLoop]: 14319 mSDtfsCounter, 1 mSDsluCounter, 28631 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 42950 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 21:31:58,185 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 42950 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-12-25 21:31:58,201 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 8597 states.
[2023-12-25 21:31:58,299 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 8597 to 8596.
[2023-12-25 21:31:58,309 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 8596 states, 8595 states have (on average 1.666783013379872) internal successors, (14326), 8595 states have internal predecessors, (14326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 21:31:58,329 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 8596 states to 8596 states and 14326 transitions.
[2023-12-25 21:31:58,330 INFO  L78                 Accepts]: Start accepts. Automaton has 8596 states and 14326 transitions. Word has length 989
[2023-12-25 21:31:58,331 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 21:31:58,331 INFO  L495      AbstractCegarLoop]: Abstraction has 8596 states and 14326 transitions.
[2023-12-25 21:31:58,331 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 247.25) internal successors, (989), 4 states have internal predecessors, (989), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 21:31:58,331 INFO  L276                IsEmpty]: Start isEmpty. Operand 8596 states and 14326 transitions.
[2023-12-25 21:31:58,338 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 991
[2023-12-25 21:31:58,338 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 21:31:58,339 INFO  L195           NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-12-25 21:31:58,340 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2023-12-25 21:31:58,340 INFO  L420      AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 21:31:58,346 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 21:31:58,346 INFO  L85        PathProgramCache]: Analyzing trace with hash -1103356431, now seen corresponding path program 1 times
[2023-12-25 21:31:58,347 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 21:31:58,347 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1106066137]
[2023-12-25 21:31:58,347 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 21:31:58,347 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 21:31:58,729 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 21:31:59,754 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 21:31:59,754 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 21:31:59,755 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1106066137]
[2023-12-25 21:31:59,755 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1106066137] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 21:31:59,755 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 21:31:59,755 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-12-25 21:31:59,755 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1179111956]
[2023-12-25 21:31:59,756 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 21:31:59,756 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-12-25 21:31:59,757 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 21:31:59,757 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-12-25 21:31:59,759 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2023-12-25 21:31:59,760 INFO  L87              Difference]: Start difference. First operand 8596 states and 14326 transitions. Second operand  has 5 states, 5 states have (on average 198.0) internal successors, (990), 4 states have internal predecessors, (990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 21:32:00,185 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 21:32:00,185 INFO  L93              Difference]: Finished difference Result 26205 states and 43676 transitions.
[2023-12-25 21:32:00,185 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2023-12-25 21:32:00,186 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 198.0) internal successors, (990), 4 states have internal predecessors, (990), 0 states have call successors, (0), 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 990
[2023-12-25 21:32:00,187 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 21:32:00,232 INFO  L225             Difference]: With dead ends: 26205
[2023-12-25 21:32:00,233 INFO  L226             Difference]: Without dead ends: 17958
[2023-12-25 21:32:00,248 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 21:32:00,250 INFO  L413           NwaCegarLoop]: 16188 mSDtfsCounter, 56410 mSDsluCounter, 28632 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56410 SdHoareTripleChecker+Valid, 44820 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2023-12-25 21:32:00,251 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [56410 Valid, 44820 Invalid, 16 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-12-25 21:32:00,271 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 17958 states.
[2023-12-25 21:32:00,429 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 17958 to 9720.
[2023-12-25 21:32:00,442 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 9720 states, 9719 states have (on average 1.6666323695853482) internal successors, (16198), 9719 states have internal predecessors, (16198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 21:32:00,457 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 9720 states to 9720 states and 16198 transitions.
[2023-12-25 21:32:00,457 INFO  L78                 Accepts]: Start accepts. Automaton has 9720 states and 16198 transitions. Word has length 990
[2023-12-25 21:32:00,458 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 21:32:00,458 INFO  L495      AbstractCegarLoop]: Abstraction has 9720 states and 16198 transitions.
[2023-12-25 21:32:00,459 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 198.0) internal successors, (990), 4 states have internal predecessors, (990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 21:32:00,460 INFO  L276                IsEmpty]: Start isEmpty. Operand 9720 states and 16198 transitions.
[2023-12-25 21:32:00,797 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 6456
[2023-12-25 21:32:00,797 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 21:32:00,801 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-12-25 21:32:00,801 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2023-12-25 21:32:00,801 INFO  L420      AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 21:32:00,801 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 21:32:00,803 INFO  L85        PathProgramCache]: Analyzing trace with hash 1948316299, now seen corresponding path program 1 times
[2023-12-25 21:32:00,803 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 21:32:00,803 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [335818704]
[2023-12-25 21:32:00,803 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 21:32:00,803 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 21:32:01,662 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 21:32:01,663 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [503571558]
[2023-12-25 21:32:01,664 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 21:32:01,664 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 21:32:01,664 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 21:32:01,666 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 21:32:01,721 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 21:32:08,263 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 21:32:08,437 INFO  L262         TraceCheckSpWp]: Trace formula consists of 28545 conjuncts, 6 conjunts are in the unsatisfiable core
[2023-12-25 21:32:08,553 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 21:32:08,722 INFO  L134       CoverageAnalysis]: Checked inductivity of 754 backedges. 754 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-25 21:32:08,722 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 21:32:08,723 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 21:32:08,723 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [335818704]
[2023-12-25 21:32:08,723 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 21:32:08,723 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [503571558]
[2023-12-25 21:32:08,723 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [503571558] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 21:32:08,723 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 21:32:08,724 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-12-25 21:32:08,724 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1617709188]
[2023-12-25 21:32:08,724 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 21:32:08,729 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-12-25 21:32:08,729 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 21:32:08,732 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-12-25 21:32:08,732 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-12-25 21:32:08,733 INFO  L87              Difference]: Start difference. First operand 9720 states and 16198 transitions. Second operand  has 4 states, 4 states have (on average 1613.75) internal successors, (6455), 4 states have internal predecessors, (6455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 21:32:08,968 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 21:32:08,968 INFO  L93              Difference]: Finished difference Result 17977 states and 29959 transitions.
[2023-12-25 21:32:08,968 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-12-25 21:32:08,970 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 1613.75) internal successors, (6455), 4 states have internal predecessors, (6455), 0 states have call successors, (0), 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 6455
[2023-12-25 21:32:08,974 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 21:32:08,987 INFO  L225             Difference]: With dead ends: 17977
[2023-12-25 21:32:08,988 INFO  L226             Difference]: Without dead ends: 9730
[2023-12-25 21:32:08,997 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 6454 GetRequests, 6452 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 21:32:09,002 INFO  L413           NwaCegarLoop]: 14319 mSDtfsCounter, 12 mSDsluCounter, 28628 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 42947 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 21:32:09,003 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 42947 Invalid, 18 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-12-25 21:32:09,014 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 9730 states.
[2023-12-25 21:32:09,111 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 9730 to 9722.
[2023-12-25 21:32:09,122 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 9722 states, 9721 states have (on average 1.6664952165415081) internal successors, (16200), 9721 states have internal predecessors, (16200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 21:32:09,134 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 9722 states to 9722 states and 16200 transitions.
[2023-12-25 21:32:09,135 INFO  L78                 Accepts]: Start accepts. Automaton has 9722 states and 16200 transitions. Word has length 6455
[2023-12-25 21:32:09,139 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 21:32:09,139 INFO  L495      AbstractCegarLoop]: Abstraction has 9722 states and 16200 transitions.
[2023-12-25 21:32:09,141 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 1613.75) internal successors, (6455), 4 states have internal predecessors, (6455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 21:32:09,141 INFO  L276                IsEmpty]: Start isEmpty. Operand 9722 states and 16200 transitions.
[2023-12-25 21:32:09,436 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 6456
[2023-12-25 21:32:09,436 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 21:32:09,439 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-12-25 21:32:09,512 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 21:32:09,660 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 21:32:09,661 INFO  L420      AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 21:32:09,661 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 21:32:09,663 INFO  L85        PathProgramCache]: Analyzing trace with hash 1064509657, now seen corresponding path program 1 times
[2023-12-25 21:32:09,663 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 21:32:09,663 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1894737267]
[2023-12-25 21:32:09,664 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 21:32:09,664 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 21:32:10,481 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 21:32:10,482 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [510363383]
[2023-12-25 21:32:10,483 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 21:32:10,483 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 21:32:10,483 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 21:32:10,502 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 21:32:10,540 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 21:32:17,698 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 21:32:17,869 INFO  L262         TraceCheckSpWp]: Trace formula consists of 28546 conjuncts, 6 conjunts are in the unsatisfiable core
[2023-12-25 21:32:17,977 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 21:32:18,142 INFO  L134       CoverageAnalysis]: Checked inductivity of 754 backedges. 754 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-25 21:32:18,142 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 21:32:18,142 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 21:32:18,143 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1894737267]
[2023-12-25 21:32:18,143 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 21:32:18,143 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [510363383]
[2023-12-25 21:32:18,143 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [510363383] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 21:32:18,143 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 21:32:18,143 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-12-25 21:32:18,143 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [974005127]
[2023-12-25 21:32:18,144 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 21:32:18,151 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-12-25 21:32:18,152 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 21:32:18,155 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-12-25 21:32:18,156 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-12-25 21:32:18,157 INFO  L87              Difference]: Start difference. First operand 9722 states and 16200 transitions. Second operand  has 4 states, 4 states have (on average 1613.75) internal successors, (6455), 4 states have internal predecessors, (6455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 21:32:18,325 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 21:32:18,325 INFO  L93              Difference]: Finished difference Result 17980 states and 29961 transitions.
[2023-12-25 21:32:18,325 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-12-25 21:32:18,327 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 1613.75) internal successors, (6455), 4 states have internal predecessors, (6455), 0 states have call successors, (0), 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 6455
[2023-12-25 21:32:18,332 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 21:32:18,343 INFO  L225             Difference]: With dead ends: 17980
[2023-12-25 21:32:18,344 INFO  L226             Difference]: Without dead ends: 9731
[2023-12-25 21:32:18,352 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 6454 GetRequests, 6452 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 21:32:18,353 INFO  L413           NwaCegarLoop]: 14319 mSDtfsCounter, 12 mSDsluCounter, 28628 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 42947 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2023-12-25 21:32:18,353 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 42947 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-12-25 21:32:18,360 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 9731 states.
[2023-12-25 21:32:18,555 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 9731 to 9723.
[2023-12-25 21:32:18,565 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 9723 states, 9722 states have (on average 1.666426661180827) internal successors, (16201), 9722 states have internal predecessors, (16201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 21:32:18,578 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 9723 states to 9723 states and 16201 transitions.
[2023-12-25 21:32:18,578 INFO  L78                 Accepts]: Start accepts. Automaton has 9723 states and 16201 transitions. Word has length 6455
[2023-12-25 21:32:18,585 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 21:32:18,585 INFO  L495      AbstractCegarLoop]: Abstraction has 9723 states and 16201 transitions.
[2023-12-25 21:32:18,587 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 1613.75) internal successors, (6455), 4 states have internal predecessors, (6455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 21:32:18,587 INFO  L276                IsEmpty]: Start isEmpty. Operand 9723 states and 16201 transitions.
[2023-12-25 21:32:18,892 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 6456
[2023-12-25 21:32:18,892 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 21:32:18,894 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 21:32:18,962 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 21:32:19,096 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 21:32:19,097 INFO  L420      AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 21:32:19,097 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 21:32:19,099 INFO  L85        PathProgramCache]: Analyzing trace with hash 1421512999, now seen corresponding path program 1 times
[2023-12-25 21:32:19,099 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 21:32:19,099 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1544739981]
[2023-12-25 21:32:19,100 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 21:32:19,100 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 21:32:19,780 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 21:32:19,781 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1867775183]
[2023-12-25 21:32:19,785 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 21:32:19,785 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 21:32:19,785 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 21:32:19,787 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 21:32:19,790 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 21:32:26,679 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 21:32:26,852 INFO  L262         TraceCheckSpWp]: Trace formula consists of 28547 conjuncts, 21 conjunts are in the unsatisfiable core
[2023-12-25 21:32:26,936 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 21:32:27,952 INFO  L134       CoverageAnalysis]: Checked inductivity of 754 backedges. 6 proven. 685 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked.
[2023-12-25 21:32:27,952 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-12-25 21:32:28,205 INFO  L134       CoverageAnalysis]: Checked inductivity of 754 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 748 trivial. 0 not checked.
[2023-12-25 21:32:28,205 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 21:32:28,206 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1544739981]
[2023-12-25 21:32:28,206 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 21:32:28,206 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1867775183]
[2023-12-25 21:32:28,206 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1867775183] provided 1 perfect and 1 imperfect interpolant sequences
[2023-12-25 21:32:28,206 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2023-12-25 21:32:28,207 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8] total 12
[2023-12-25 21:32:28,207 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [231400959]
[2023-12-25 21:32:28,207 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 21:32:28,212 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2023-12-25 21:32:28,212 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 21:32:28,216 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2023-12-25 21:32:28,217 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132
[2023-12-25 21:32:28,219 INFO  L87              Difference]: Start difference. First operand 9723 states and 16201 transitions. Second operand  has 6 states, 6 states have (on average 951.3333333333334) internal successors, (5708), 6 states have internal predecessors, (5708), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 21:32:45,712 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 21:32:45,713 INFO  L93              Difference]: Finished difference Result 41932 states and 69617 transitions.
[2023-12-25 21:32:45,713 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. 
[2023-12-25 21:32:45,714 INFO  L78                 Accepts]: Start accepts. Automaton has  has 6 states, 6 states have (on average 951.3333333333334) internal successors, (5708), 6 states have internal predecessors, (5708), 0 states have call successors, (0), 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 6455
[2023-12-25 21:32:45,721 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 21:32:45,749 INFO  L225             Difference]: With dead ends: 41932
[2023-12-25 21:32:45,749 INFO  L226             Difference]: Without dead ends: 26216
[2023-12-25 21:32:45,761 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 12910 GetRequests, 12898 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 21:32:45,762 INFO  L413           NwaCegarLoop]: 23690 mSDtfsCounter, 50260 mSDsluCounter, 66331 mSDsCounter, 0 mSdLazyCounter, 27828 mSolverCounterSat, 781 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50260 SdHoareTripleChecker+Valid, 90021 SdHoareTripleChecker+Invalid, 28609 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 781 IncrementalHoareTripleChecker+Valid, 27828 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.7s IncrementalHoareTripleChecker+Time
[2023-12-25 21:32:45,762 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [50260 Valid, 90021 Invalid, 28609 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [781 Valid, 27828 Invalid, 0 Unknown, 0 Unchecked, 16.7s Time]
[2023-12-25 21:32:45,779 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 26216 states.
[2023-12-25 21:32:45,891 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 26216 to 9723.
[2023-12-25 21:32:45,900 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 9723 states, 9722 states have (on average 1.666426661180827) internal successors, (16201), 9722 states have internal predecessors, (16201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 21:32:45,910 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 9723 states to 9723 states and 16201 transitions.
[2023-12-25 21:32:45,910 INFO  L78                 Accepts]: Start accepts. Automaton has 9723 states and 16201 transitions. Word has length 6455
[2023-12-25 21:32:45,914 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 21:32:45,914 INFO  L495      AbstractCegarLoop]: Abstraction has 9723 states and 16201 transitions.
[2023-12-25 21:32:45,915 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 6 states, 6 states have (on average 951.3333333333334) internal successors, (5708), 6 states have internal predecessors, (5708), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 21:32:45,915 INFO  L276                IsEmpty]: Start isEmpty. Operand 9723 states and 16201 transitions.
[2023-12-25 21:32:46,151 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 6457
[2023-12-25 21:32:46,151 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 21:32:46,154 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-12-25 21:32:46,227 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 21:32:46,359 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 21:32:46,360 INFO  L420      AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 21:32:46,360 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 21:32:46,362 INFO  L85        PathProgramCache]: Analyzing trace with hash -1970851621, now seen corresponding path program 1 times
[2023-12-25 21:32:46,362 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 21:32:46,362 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [985493457]
[2023-12-25 21:32:46,363 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 21:32:46,363 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 21:32:47,176 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 21:32:47,176 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [395031705]
[2023-12-25 21:32:47,177 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 21:32:47,178 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 21:32:47,178 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 21:32:47,179 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 21:32:47,184 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 21:32:53,830 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 21:32:54,018 INFO  L262         TraceCheckSpWp]: Trace formula consists of 28551 conjuncts, 17 conjunts are in the unsatisfiable core
[2023-12-25 21:32:54,094 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 21:32:55,062 INFO  L134       CoverageAnalysis]: Checked inductivity of 754 backedges. 8 proven. 685 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked.
[2023-12-25 21:32:55,062 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-12-25 21:32:55,151 INFO  L134       CoverageAnalysis]: Checked inductivity of 754 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 746 trivial. 0 not checked.
[2023-12-25 21:32:55,151 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 21:32:55,151 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [985493457]
[2023-12-25 21:32:55,151 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 21:32:55,151 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [395031705]
[2023-12-25 21:32:55,151 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [395031705] provided 1 perfect and 1 imperfect interpolant sequences
[2023-12-25 21:32:55,151 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2023-12-25 21:32:55,152 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10
[2023-12-25 21:32:55,152 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [9696499]
[2023-12-25 21:32:55,152 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 21:32:55,157 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-12-25 21:32:55,157 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 21:32:55,160 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-12-25 21:32:55,160 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90
[2023-12-25 21:32:55,161 INFO  L87              Difference]: Start difference. First operand 9723 states and 16201 transitions. Second operand  has 5 states, 5 states have (on average 1142.2) internal successors, (5711), 5 states have internal predecessors, (5711), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 21:33:02,900 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 21:33:02,901 INFO  L93              Difference]: Finished difference Result 33689 states and 55878 transitions.
[2023-12-25 21:33:02,901 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2023-12-25 21:33:02,902 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 1142.2) internal successors, (5711), 5 states have internal predecessors, (5711), 0 states have call successors, (0), 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 6456
[2023-12-25 21:33:02,927 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 21:33:02,952 INFO  L225             Difference]: With dead ends: 33689
[2023-12-25 21:33:02,952 INFO  L226             Difference]: Without dead ends: 17968
[2023-12-25 21:33:02,966 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 12911 GetRequests, 12902 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 21:33:02,967 INFO  L413           NwaCegarLoop]: 23680 mSDtfsCounter, 36516 mSDsluCounter, 22667 mSDsCounter, 0 mSdLazyCounter, 11745 mSolverCounterSat, 779 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36516 SdHoareTripleChecker+Valid, 46347 SdHoareTripleChecker+Invalid, 12524 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 779 IncrementalHoareTripleChecker+Valid, 11745 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.3s IncrementalHoareTripleChecker+Time
[2023-12-25 21:33:02,967 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [36516 Valid, 46347 Invalid, 12524 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [779 Valid, 11745 Invalid, 0 Unknown, 0 Unchecked, 7.3s Time]
[2023-12-25 21:33:02,983 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 17968 states.
[2023-12-25 21:33:03,097 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 17968 to 9725.
[2023-12-25 21:33:03,107 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 9725 states, 9724 states have (on average 1.666289592760181) internal successors, (16203), 9724 states have internal predecessors, (16203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 21:33:03,118 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 9725 states to 9725 states and 16203 transitions.
[2023-12-25 21:33:03,118 INFO  L78                 Accepts]: Start accepts. Automaton has 9725 states and 16203 transitions. Word has length 6456
[2023-12-25 21:33:03,122 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 21:33:03,122 INFO  L495      AbstractCegarLoop]: Abstraction has 9725 states and 16203 transitions.
[2023-12-25 21:33:03,123 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 1142.2) internal successors, (5711), 5 states have internal predecessors, (5711), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 21:33:03,123 INFO  L276                IsEmpty]: Start isEmpty. Operand 9725 states and 16203 transitions.
[2023-12-25 21:33:03,362 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 6458
[2023-12-25 21:33:03,362 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 21:33:03,365 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 21:33:03,450 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 21:33:03,580 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 21:33:03,580 INFO  L420      AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 21:33:03,581 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 21:33:03,583 INFO  L85        PathProgramCache]: Analyzing trace with hash -549133633, now seen corresponding path program 1 times
[2023-12-25 21:33:03,583 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 21:33:03,583 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [636169136]
[2023-12-25 21:33:03,583 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 21:33:03,583 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 21:33:04,214 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 21:33:04,215 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [291620103]
[2023-12-25 21:33:04,216 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 21:33:04,216 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 21:33:04,216 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 21:33:04,236 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 21:33:04,256 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 21:33:11,250 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 21:33:11,424 INFO  L262         TraceCheckSpWp]: Trace formula consists of 28554 conjuncts, 17 conjunts are in the unsatisfiable core
[2023-12-25 21:33:11,509 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 21:33:12,462 INFO  L134       CoverageAnalysis]: Checked inductivity of 754 backedges. 10 proven. 685 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked.
[2023-12-25 21:33:12,462 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-12-25 21:33:12,554 INFO  L134       CoverageAnalysis]: Checked inductivity of 754 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 744 trivial. 0 not checked.
[2023-12-25 21:33:12,554 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 21:33:12,554 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [636169136]
[2023-12-25 21:33:12,554 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 21:33:12,560 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [291620103]
[2023-12-25 21:33:12,560 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [291620103] provided 1 perfect and 1 imperfect interpolant sequences
[2023-12-25 21:33:12,560 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2023-12-25 21:33:12,561 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10
[2023-12-25 21:33:12,561 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [482962021]
[2023-12-25 21:33:12,561 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 21:33:12,565 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-12-25 21:33:12,565 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 21:33:12,568 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-12-25 21:33:12,569 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90
[2023-12-25 21:33:12,569 INFO  L87              Difference]: Start difference. First operand 9725 states and 16203 transitions. Second operand  has 5 states, 5 states have (on average 1142.8) internal successors, (5714), 5 states have internal predecessors, (5714), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 21:33:19,784 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 21:33:19,784 INFO  L93              Difference]: Finished difference Result 33697 states and 55886 transitions.
[2023-12-25 21:33:19,785 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2023-12-25 21:33:19,786 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 1142.8) internal successors, (5714), 5 states have internal predecessors, (5714), 0 states have call successors, (0), 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 6457
[2023-12-25 21:33:19,793 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 21:33:19,815 INFO  L225             Difference]: With dead ends: 33697
[2023-12-25 21:33:19,815 INFO  L226             Difference]: Without dead ends: 17969
[2023-12-25 21:33:19,824 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 12913 GetRequests, 12904 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 21:33:19,825 INFO  L413           NwaCegarLoop]: 23672 mSDtfsCounter, 36508 mSDsluCounter, 22662 mSDsCounter, 0 mSdLazyCounter, 11745 mSolverCounterSat, 779 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36508 SdHoareTripleChecker+Valid, 46334 SdHoareTripleChecker+Invalid, 12524 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 779 IncrementalHoareTripleChecker+Valid, 11745 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.8s IncrementalHoareTripleChecker+Time
[2023-12-25 21:33:19,825 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [36508 Valid, 46334 Invalid, 12524 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [779 Valid, 11745 Invalid, 0 Unknown, 0 Unchecked, 6.8s Time]
[2023-12-25 21:33:19,836 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 17969 states.
[2023-12-25 21:33:19,920 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 17969 to 9727.
[2023-12-25 21:33:19,929 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 9727 states, 9726 states have (on average 1.666152580711495) internal successors, (16205), 9726 states have internal predecessors, (16205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 21:33:19,938 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 9727 states to 9727 states and 16205 transitions.
[2023-12-25 21:33:19,938 INFO  L78                 Accepts]: Start accepts. Automaton has 9727 states and 16205 transitions. Word has length 6457
[2023-12-25 21:33:19,942 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 21:33:19,944 INFO  L495      AbstractCegarLoop]: Abstraction has 9727 states and 16205 transitions.
[2023-12-25 21:33:19,945 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 1142.8) internal successors, (5714), 5 states have internal predecessors, (5714), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 21:33:19,945 INFO  L276                IsEmpty]: Start isEmpty. Operand 9727 states and 16205 transitions.
[2023-12-25 21:33:20,206 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 6459
[2023-12-25 21:33:20,206 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 21:33:20,209 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 21:33:20,323 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 21:33:20,409 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 21:33:20,410 INFO  L420      AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 21:33:20,410 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 21:33:20,412 INFO  L85        PathProgramCache]: Analyzing trace with hash 313241217, now seen corresponding path program 1 times
[2023-12-25 21:33:20,412 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 21:33:20,412 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [725935382]
[2023-12-25 21:33:20,412 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 21:33:20,412 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 21:33:21,008 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 21:33:21,009 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1562798299]
[2023-12-25 21:33:21,010 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 21:33:21,010 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 21:33:21,011 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 21:33:21,012 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 21:33:21,022 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 21:33:27,754 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 21:33:27,930 INFO  L262         TraceCheckSpWp]: Trace formula consists of 28557 conjuncts, 17 conjunts are in the unsatisfiable core
[2023-12-25 21:33:28,017 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 21:33:28,736 INFO  L134       CoverageAnalysis]: Checked inductivity of 754 backedges. 12 proven. 685 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked.
[2023-12-25 21:33:28,736 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-12-25 21:33:28,909 INFO  L134       CoverageAnalysis]: Checked inductivity of 754 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 742 trivial. 0 not checked.
[2023-12-25 21:33:28,909 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 21:33:28,909 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [725935382]
[2023-12-25 21:33:28,909 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 21:33:28,909 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1562798299]
[2023-12-25 21:33:28,910 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1562798299] provided 1 perfect and 1 imperfect interpolant sequences
[2023-12-25 21:33:28,910 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2023-12-25 21:33:28,911 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10
[2023-12-25 21:33:28,911 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [191283461]
[2023-12-25 21:33:28,911 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 21:33:28,922 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-12-25 21:33:28,923 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 21:33:28,926 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-12-25 21:33:28,926 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90
[2023-12-25 21:33:28,927 INFO  L87              Difference]: Start difference. First operand 9727 states and 16205 transitions. Second operand  has 5 states, 5 states have (on average 1143.4) internal successors, (5717), 5 states have internal predecessors, (5717), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 21:33:35,773 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 21:33:35,774 INFO  L93              Difference]: Finished difference Result 33705 states and 55894 transitions.
[2023-12-25 21:33:35,774 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2023-12-25 21:33:35,775 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 1143.4) internal successors, (5717), 5 states have internal predecessors, (5717), 0 states have call successors, (0), 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 6458
[2023-12-25 21:33:35,792 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 21:33:35,847 INFO  L225             Difference]: With dead ends: 33705
[2023-12-25 21:33:35,847 INFO  L226             Difference]: Without dead ends: 17970
[2023-12-25 21:33:35,859 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 12915 GetRequests, 12906 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 21:33:35,877 INFO  L413           NwaCegarLoop]: 23664 mSDtfsCounter, 36500 mSDsluCounter, 22657 mSDsCounter, 0 mSdLazyCounter, 11745 mSolverCounterSat, 779 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36500 SdHoareTripleChecker+Valid, 46321 SdHoareTripleChecker+Invalid, 12524 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 779 IncrementalHoareTripleChecker+Valid, 11745 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.5s IncrementalHoareTripleChecker+Time
[2023-12-25 21:33:35,877 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [36500 Valid, 46321 Invalid, 12524 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [779 Valid, 11745 Invalid, 0 Unknown, 0 Unchecked, 6.5s Time]
[2023-12-25 21:33:35,894 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 17970 states.
[2023-12-25 21:33:36,052 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 17970 to 9729.
[2023-12-25 21:33:36,060 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 9729 states, 9728 states have (on average 1.666015625) internal successors, (16207), 9728 states have internal predecessors, (16207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 21:33:36,149 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 9729 states to 9729 states and 16207 transitions.
[2023-12-25 21:33:36,149 INFO  L78                 Accepts]: Start accepts. Automaton has 9729 states and 16207 transitions. Word has length 6458
[2023-12-25 21:33:36,153 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 21:33:36,153 INFO  L495      AbstractCegarLoop]: Abstraction has 9729 states and 16207 transitions.
[2023-12-25 21:33:36,154 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 1143.4) internal successors, (5717), 5 states have internal predecessors, (5717), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 21:33:36,154 INFO  L276                IsEmpty]: Start isEmpty. Operand 9729 states and 16207 transitions.
[2023-12-25 21:33:36,411 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 6460
[2023-12-25 21:33:36,411 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 21:33:36,414 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 21:33:36,506 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 21:33:36,640 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 21:33:36,640 INFO  L420      AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 21:33:36,641 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 21:33:36,643 INFO  L85        PathProgramCache]: Analyzing trace with hash 2056110105, now seen corresponding path program 1 times
[2023-12-25 21:33:36,643 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 21:33:36,643 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1474214724]
[2023-12-25 21:33:36,644 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 21:33:36,644 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 21:33:37,380 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 21:33:37,381 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1292951788]
[2023-12-25 21:33:37,382 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 21:33:37,382 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 21:33:37,382 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 21:33:37,383 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 21:33:37,399 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 21:33:44,244 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 21:33:44,420 INFO  L262         TraceCheckSpWp]: Trace formula consists of 28560 conjuncts, 17 conjunts are in the unsatisfiable core
[2023-12-25 21:33:44,487 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 21:33:45,182 INFO  L134       CoverageAnalysis]: Checked inductivity of 754 backedges. 14 proven. 685 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked.
[2023-12-25 21:33:45,182 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-12-25 21:33:45,268 INFO  L134       CoverageAnalysis]: Checked inductivity of 754 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 740 trivial. 0 not checked.
[2023-12-25 21:33:45,268 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 21:33:45,268 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1474214724]
[2023-12-25 21:33:45,268 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 21:33:45,268 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1292951788]
[2023-12-25 21:33:45,268 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1292951788] provided 1 perfect and 1 imperfect interpolant sequences
[2023-12-25 21:33:45,268 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2023-12-25 21:33:45,269 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10
[2023-12-25 21:33:45,271 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1188911662]
[2023-12-25 21:33:45,271 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 21:33:45,275 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-12-25 21:33:45,275 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 21:33:45,278 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-12-25 21:33:45,278 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90
[2023-12-25 21:33:45,278 INFO  L87              Difference]: Start difference. First operand 9729 states and 16207 transitions. Second operand  has 5 states, 5 states have (on average 1144.0) internal successors, (5720), 5 states have internal predecessors, (5720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 21:33:53,995 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 21:33:53,995 INFO  L93              Difference]: Finished difference Result 33713 states and 55902 transitions.
[2023-12-25 21:33:53,995 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2023-12-25 21:33:53,997 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 1144.0) internal successors, (5720), 5 states have internal predecessors, (5720), 0 states have call successors, (0), 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 6459
[2023-12-25 21:33:54,000 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 21:33:54,027 INFO  L225             Difference]: With dead ends: 33713
[2023-12-25 21:33:54,027 INFO  L226             Difference]: Without dead ends: 17971
[2023-12-25 21:33:54,035 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 12917 GetRequests, 12908 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 21:33:54,035 INFO  L413           NwaCegarLoop]: 23656 mSDtfsCounter, 25104 mSDsluCounter, 34448 mSDsCounter, 0 mSdLazyCounter, 16121 mSolverCounterSat, 779 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25104 SdHoareTripleChecker+Valid, 58104 SdHoareTripleChecker+Invalid, 16900 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 779 IncrementalHoareTripleChecker+Valid, 16121 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.3s IncrementalHoareTripleChecker+Time
[2023-12-25 21:33:54,036 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [25104 Valid, 58104 Invalid, 16900 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [779 Valid, 16121 Invalid, 0 Unknown, 0 Unchecked, 8.3s Time]
[2023-12-25 21:33:54,051 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 17971 states.
[2023-12-25 21:33:54,139 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 17971 to 9731.
[2023-12-25 21:33:54,147 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 9731 states, 9730 states have (on average 1.6658787255909557) internal successors, (16209), 9730 states have internal predecessors, (16209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 21:33:54,156 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 9731 states to 9731 states and 16209 transitions.
[2023-12-25 21:33:54,156 INFO  L78                 Accepts]: Start accepts. Automaton has 9731 states and 16209 transitions. Word has length 6459
[2023-12-25 21:33:54,159 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 21:33:54,159 INFO  L495      AbstractCegarLoop]: Abstraction has 9731 states and 16209 transitions.
[2023-12-25 21:33:54,160 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 1144.0) internal successors, (5720), 5 states have internal predecessors, (5720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 21:33:54,160 INFO  L276                IsEmpty]: Start isEmpty. Operand 9731 states and 16209 transitions.
[2023-12-25 21:33:54,422 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 6461
[2023-12-25 21:33:54,422 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 21:33:54,425 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 21:33:54,497 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0
[2023-12-25 21:33:54,644 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 21:33:54,644 INFO  L420      AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 21:33:54,645 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 21:33:54,647 INFO  L85        PathProgramCache]: Analyzing trace with hash -786455707, now seen corresponding path program 1 times
[2023-12-25 21:33:54,647 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 21:33:54,647 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1273761078]
[2023-12-25 21:33:54,647 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 21:33:54,647 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 21:33:55,263 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 21:33:55,263 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [213820370]
[2023-12-25 21:33:55,265 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 21:33:55,265 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 21:33:55,265 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 21:33:55,266 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 21:33:55,268 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 21:34:02,075 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 21:34:02,292 INFO  L262         TraceCheckSpWp]: Trace formula consists of 28564 conjuncts, 17 conjunts are in the unsatisfiable core
[2023-12-25 21:34:02,363 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 21:34:03,134 INFO  L134       CoverageAnalysis]: Checked inductivity of 754 backedges. 16 proven. 685 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked.
[2023-12-25 21:34:03,135 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-12-25 21:34:03,228 INFO  L134       CoverageAnalysis]: Checked inductivity of 754 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 738 trivial. 0 not checked.
[2023-12-25 21:34:03,228 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 21:34:03,228 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1273761078]
[2023-12-25 21:34:03,229 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 21:34:03,229 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [213820370]
[2023-12-25 21:34:03,229 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [213820370] provided 1 perfect and 1 imperfect interpolant sequences
[2023-12-25 21:34:03,229 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2023-12-25 21:34:03,230 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10
[2023-12-25 21:34:03,230 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [783032790]
[2023-12-25 21:34:03,231 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 21:34:03,234 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-12-25 21:34:03,234 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 21:34:03,237 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-12-25 21:34:03,237 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90
[2023-12-25 21:34:03,238 INFO  L87              Difference]: Start difference. First operand 9731 states and 16209 transitions. Second operand  has 5 states, 5 states have (on average 1144.6) internal successors, (5723), 5 states have internal predecessors, (5723), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 21:34:10,943 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 21:34:10,944 INFO  L93              Difference]: Finished difference Result 33721 states and 55910 transitions.
[2023-12-25 21:34:10,944 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2023-12-25 21:34:10,945 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 1144.6) internal successors, (5723), 5 states have internal predecessors, (5723), 0 states have call successors, (0), 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 6460
[2023-12-25 21:34:10,949 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 21:34:10,963 INFO  L225             Difference]: With dead ends: 33721
[2023-12-25 21:34:10,963 INFO  L226             Difference]: Without dead ends: 17972
[2023-12-25 21:34:10,970 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 12919 GetRequests, 12910 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 21:34:10,970 INFO  L413           NwaCegarLoop]: 23648 mSDtfsCounter, 25098 mSDsluCounter, 34438 mSDsCounter, 0 mSdLazyCounter, 16121 mSolverCounterSat, 779 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25098 SdHoareTripleChecker+Valid, 58086 SdHoareTripleChecker+Invalid, 16900 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 779 IncrementalHoareTripleChecker+Valid, 16121 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.3s IncrementalHoareTripleChecker+Time
[2023-12-25 21:34:10,970 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [25098 Valid, 58086 Invalid, 16900 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [779 Valid, 16121 Invalid, 0 Unknown, 0 Unchecked, 7.3s Time]
[2023-12-25 21:34:10,982 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 17972 states.
[2023-12-25 21:34:11,069 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 17972 to 9733.
[2023-12-25 21:34:11,078 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 9733 states, 9732 states have (on average 1.6657418824496506) internal successors, (16211), 9732 states have internal predecessors, (16211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 21:34:11,087 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 9733 states to 9733 states and 16211 transitions.
[2023-12-25 21:34:11,088 INFO  L78                 Accepts]: Start accepts. Automaton has 9733 states and 16211 transitions. Word has length 6460
[2023-12-25 21:34:11,091 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 21:34:11,091 INFO  L495      AbstractCegarLoop]: Abstraction has 9733 states and 16211 transitions.
[2023-12-25 21:34:11,092 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 1144.6) internal successors, (5723), 5 states have internal predecessors, (5723), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 21:34:11,092 INFO  L276                IsEmpty]: Start isEmpty. Operand 9733 states and 16211 transitions.
[2023-12-25 21:34:11,331 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 6462
[2023-12-25 21:34:11,331 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 21:34:11,334 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 21:34:11,406 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 21:34:11,560 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,SelfDestructingSolverStorable10
[2023-12-25 21:34:11,561 INFO  L420      AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 21:34:11,561 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 21:34:11,563 INFO  L85        PathProgramCache]: Analyzing trace with hash 1280876721, now seen corresponding path program 1 times
[2023-12-25 21:34:11,563 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 21:34:11,563 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1191509195]
[2023-12-25 21:34:11,563 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 21:34:11,563 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 21:34:12,340 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 21:34:12,340 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [369782391]
[2023-12-25 21:34:12,342 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 21:34:12,342 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 21:34:12,342 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 21:34:12,343 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 21:34:12,344 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 21:34:18,939 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 21:34:19,113 INFO  L262         TraceCheckSpWp]: Trace formula consists of 28567 conjuncts, 17 conjunts are in the unsatisfiable core
[2023-12-25 21:34:19,184 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 21:34:19,824 INFO  L134       CoverageAnalysis]: Checked inductivity of 754 backedges. 18 proven. 685 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked.
[2023-12-25 21:34:19,824 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-12-25 21:34:19,933 INFO  L134       CoverageAnalysis]: Checked inductivity of 754 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 736 trivial. 0 not checked.
[2023-12-25 21:34:19,934 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 21:34:19,934 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1191509195]
[2023-12-25 21:34:19,934 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 21:34:19,934 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [369782391]
[2023-12-25 21:34:19,934 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [369782391] provided 1 perfect and 1 imperfect interpolant sequences
[2023-12-25 21:34:19,934 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2023-12-25 21:34:19,935 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10
[2023-12-25 21:34:19,935 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1314057930]
[2023-12-25 21:34:19,935 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 21:34:19,941 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-12-25 21:34:19,941 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 21:34:19,944 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-12-25 21:34:19,944 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90
[2023-12-25 21:34:19,945 INFO  L87              Difference]: Start difference. First operand 9733 states and 16211 transitions. Second operand  has 5 states, 5 states have (on average 1145.2) internal successors, (5726), 5 states have internal predecessors, (5726), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 21:34:30,495 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 21:34:30,496 INFO  L93              Difference]: Finished difference Result 33729 states and 55918 transitions.
[2023-12-25 21:34:30,496 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2023-12-25 21:34:30,497 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 1145.2) internal successors, (5726), 5 states have internal predecessors, (5726), 0 states have call successors, (0), 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 6461
[2023-12-25 21:34:30,501 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 21:34:30,512 INFO  L225             Difference]: With dead ends: 33729
[2023-12-25 21:34:30,513 INFO  L226             Difference]: Without dead ends: 17973
[2023-12-25 21:34:30,518 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 12921 GetRequests, 12912 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 21:34:30,519 INFO  L413           NwaCegarLoop]: 23640 mSDtfsCounter, 25092 mSDsluCounter, 34428 mSDsCounter, 0 mSdLazyCounter, 16121 mSolverCounterSat, 779 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25092 SdHoareTripleChecker+Valid, 58068 SdHoareTripleChecker+Invalid, 16900 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 779 IncrementalHoareTripleChecker+Valid, 16121 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.1s IncrementalHoareTripleChecker+Time
[2023-12-25 21:34:30,519 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [25092 Valid, 58068 Invalid, 16900 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [779 Valid, 16121 Invalid, 0 Unknown, 0 Unchecked, 10.1s Time]
[2023-12-25 21:34:30,530 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 17973 states.
[2023-12-25 21:34:30,611 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 17973 to 9735.
[2023-12-25 21:34:30,619 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 9735 states, 9734 states have (on average 1.6656050955414012) internal successors, (16213), 9734 states have internal predecessors, (16213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 21:34:30,628 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 9735 states to 9735 states and 16213 transitions.
[2023-12-25 21:34:30,628 INFO  L78                 Accepts]: Start accepts. Automaton has 9735 states and 16213 transitions. Word has length 6461
[2023-12-25 21:34:30,631 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 21:34:30,631 INFO  L495      AbstractCegarLoop]: Abstraction has 9735 states and 16213 transitions.
[2023-12-25 21:34:30,632 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 1145.2) internal successors, (5726), 5 states have internal predecessors, (5726), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 21:34:30,632 INFO  L276                IsEmpty]: Start isEmpty. Operand 9735 states and 16213 transitions.
[2023-12-25 21:34:30,831 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 6463
[2023-12-25 21:34:30,832 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 21:34:30,833 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 21:34:30,910 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 21:34:31,060 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 21:34:31,060 INFO  L420      AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 21:34:31,061 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 21:34:31,062 INFO  L85        PathProgramCache]: Analyzing trace with hash -1614346997, now seen corresponding path program 1 times
[2023-12-25 21:34:31,062 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 21:34:31,062 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [736876829]
[2023-12-25 21:34:31,062 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 21:34:31,062 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 21:34:31,669 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 21:34:31,669 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [732647810]
[2023-12-25 21:34:31,671 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 21:34:31,671 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 21:34:31,671 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 21:34:31,672 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 21:34:31,676 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 21:34:38,524 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 21:34:38,692 INFO  L262         TraceCheckSpWp]: Trace formula consists of 28570 conjuncts, 17 conjunts are in the unsatisfiable core
[2023-12-25 21:34:38,757 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 21:34:39,697 INFO  L134       CoverageAnalysis]: Checked inductivity of 754 backedges. 20 proven. 685 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked.
[2023-12-25 21:34:39,698 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-12-25 21:34:39,802 INFO  L134       CoverageAnalysis]: Checked inductivity of 754 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 734 trivial. 0 not checked.
[2023-12-25 21:34:39,802 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 21:34:39,802 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [736876829]
[2023-12-25 21:34:39,802 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 21:34:39,802 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [732647810]
[2023-12-25 21:34:39,802 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [732647810] provided 1 perfect and 1 imperfect interpolant sequences
[2023-12-25 21:34:39,802 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2023-12-25 21:34:39,803 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10
[2023-12-25 21:34:39,803 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1023178101]
[2023-12-25 21:34:39,803 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 21:34:39,806 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-12-25 21:34:39,806 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 21:34:39,809 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-12-25 21:34:39,809 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90
[2023-12-25 21:34:39,809 INFO  L87              Difference]: Start difference. First operand 9735 states and 16213 transitions. Second operand  has 5 states, 5 states have (on average 1145.8) internal successors, (5729), 5 states have internal predecessors, (5729), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 21:34:48,991 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 21:34:48,991 INFO  L93              Difference]: Finished difference Result 33737 states and 55926 transitions.
[2023-12-25 21:34:48,991 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2023-12-25 21:34:48,993 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 1145.8) internal successors, (5729), 5 states have internal predecessors, (5729), 0 states have call successors, (0), 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 6462
[2023-12-25 21:34:48,996 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 21:34:49,010 INFO  L225             Difference]: With dead ends: 33737
[2023-12-25 21:34:49,011 INFO  L226             Difference]: Without dead ends: 17974
[2023-12-25 21:34:49,019 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 12923 GetRequests, 12914 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 21:34:49,020 INFO  L413           NwaCegarLoop]: 23632 mSDtfsCounter, 36468 mSDsluCounter, 22637 mSDsCounter, 0 mSdLazyCounter, 11745 mSolverCounterSat, 779 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36468 SdHoareTripleChecker+Valid, 46269 SdHoareTripleChecker+Invalid, 12524 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 779 IncrementalHoareTripleChecker+Valid, 11745 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.8s IncrementalHoareTripleChecker+Time
[2023-12-25 21:34:49,020 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [36468 Valid, 46269 Invalid, 12524 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [779 Valid, 11745 Invalid, 0 Unknown, 0 Unchecked, 8.8s Time]
[2023-12-25 21:34:49,032 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 17974 states.
[2023-12-25 21:34:49,163 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 17974 to 9737.
[2023-12-25 21:34:49,173 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 9737 states, 9736 states have (on average 1.665468364831553) internal successors, (16215), 9736 states have internal predecessors, (16215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 21:34:49,182 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 9737 states to 9737 states and 16215 transitions.
[2023-12-25 21:34:49,183 INFO  L78                 Accepts]: Start accepts. Automaton has 9737 states and 16215 transitions. Word has length 6462
[2023-12-25 21:34:49,185 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 21:34:49,185 INFO  L495      AbstractCegarLoop]: Abstraction has 9737 states and 16215 transitions.
[2023-12-25 21:34:49,186 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 1145.8) internal successors, (5729), 5 states have internal predecessors, (5729), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 21:34:49,186 INFO  L276                IsEmpty]: Start isEmpty. Operand 9737 states and 16215 transitions.
[2023-12-25 21:34:49,433 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 6464
[2023-12-25 21:34:49,433 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 21:34:49,435 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 21:34:49,510 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 21:34:49,660 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,SelfDestructingSolverStorable12
[2023-12-25 21:34:49,660 INFO  L420      AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 21:34:49,661 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 21:34:49,661 INFO  L85        PathProgramCache]: Analyzing trace with hash -1527530997, now seen corresponding path program 1 times
[2023-12-25 21:34:49,662 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 21:34:49,662 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [130190441]
[2023-12-25 21:34:49,662 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 21:34:49,662 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 21:34:50,231 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 21:34:50,231 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1681946496]
[2023-12-25 21:34:50,232 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 21:34:50,232 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 21:34:50,232 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 21:34:50,233 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 21:34:50,235 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 21:34:57,038 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 21:34:57,214 INFO  L262         TraceCheckSpWp]: Trace formula consists of 28573 conjuncts, 17 conjunts are in the unsatisfiable core
[2023-12-25 21:34:57,278 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 21:34:58,219 INFO  L134       CoverageAnalysis]: Checked inductivity of 754 backedges. 22 proven. 685 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked.
[2023-12-25 21:34:58,219 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-12-25 21:34:58,326 INFO  L134       CoverageAnalysis]: Checked inductivity of 754 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 732 trivial. 0 not checked.
[2023-12-25 21:34:58,326 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 21:34:58,326 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [130190441]
[2023-12-25 21:34:58,326 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 21:34:58,326 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1681946496]
[2023-12-25 21:34:58,327 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1681946496] provided 1 perfect and 1 imperfect interpolant sequences
[2023-12-25 21:34:58,327 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2023-12-25 21:34:58,327 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10
[2023-12-25 21:34:58,328 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1419718584]
[2023-12-25 21:34:58,328 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 21:34:58,330 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-12-25 21:34:58,330 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 21:34:58,333 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-12-25 21:34:58,333 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90
[2023-12-25 21:34:58,333 INFO  L87              Difference]: Start difference. First operand 9737 states and 16215 transitions. Second operand  has 5 states, 5 states have (on average 1146.4) internal successors, (5732), 5 states have internal predecessors, (5732), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 21:35:07,214 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 21:35:07,214 INFO  L93              Difference]: Finished difference Result 33745 states and 55934 transitions.
[2023-12-25 21:35:07,214 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2023-12-25 21:35:07,216 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 1146.4) internal successors, (5732), 5 states have internal predecessors, (5732), 0 states have call successors, (0), 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 6463
[2023-12-25 21:35:07,220 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 21:35:07,236 INFO  L225             Difference]: With dead ends: 33745
[2023-12-25 21:35:07,236 INFO  L226             Difference]: Without dead ends: 17975
[2023-12-25 21:35:07,247 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 12925 GetRequests, 12916 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 21:35:07,251 INFO  L413           NwaCegarLoop]: 23624 mSDtfsCounter, 36451 mSDsluCounter, 22633 mSDsCounter, 0 mSdLazyCounter, 11745 mSolverCounterSat, 779 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36451 SdHoareTripleChecker+Valid, 46257 SdHoareTripleChecker+Invalid, 12524 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 779 IncrementalHoareTripleChecker+Valid, 11745 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.5s IncrementalHoareTripleChecker+Time
[2023-12-25 21:35:07,252 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [36451 Valid, 46257 Invalid, 12524 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [779 Valid, 11745 Invalid, 0 Unknown, 0 Unchecked, 8.5s Time]
[2023-12-25 21:35:07,266 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 17975 states.
[2023-12-25 21:35:07,435 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 17975 to 9739.
[2023-12-25 21:35:07,443 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 9739 states, 9738 states have (on average 1.6653316902854796) internal successors, (16217), 9738 states have internal predecessors, (16217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 21:35:07,452 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 9739 states to 9739 states and 16217 transitions.
[2023-12-25 21:35:07,453 INFO  L78                 Accepts]: Start accepts. Automaton has 9739 states and 16217 transitions. Word has length 6463
[2023-12-25 21:35:07,456 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 21:35:07,456 INFO  L495      AbstractCegarLoop]: Abstraction has 9739 states and 16217 transitions.
[2023-12-25 21:35:07,457 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 1146.4) internal successors, (5732), 5 states have internal predecessors, (5732), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 21:35:07,457 INFO  L276                IsEmpty]: Start isEmpty. Operand 9739 states and 16217 transitions.
[2023-12-25 21:35:07,658 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 6465
[2023-12-25 21:35:07,658 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 21:35:07,659 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 21:35:07,738 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0
[2023-12-25 21:35:07,881 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,SelfDestructingSolverStorable13
[2023-12-25 21:35:07,881 INFO  L420      AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 21:35:07,882 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 21:35:07,883 INFO  L85        PathProgramCache]: Analyzing trace with hash 2057810159, now seen corresponding path program 1 times
[2023-12-25 21:35:07,883 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 21:35:07,883 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1373055702]
[2023-12-25 21:35:07,883 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 21:35:07,883 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 21:35:08,654 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 21:35:08,654 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1738118901]
[2023-12-25 21:35:08,655 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 21:35:08,656 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 21:35:08,656 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 21:35:08,667 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 21:35:08,717 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 21:35:15,431 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 21:35:15,610 INFO  L262         TraceCheckSpWp]: Trace formula consists of 28577 conjuncts, 17 conjunts are in the unsatisfiable core
[2023-12-25 21:35:15,756 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 21:35:16,521 INFO  L134       CoverageAnalysis]: Checked inductivity of 754 backedges. 24 proven. 685 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked.
[2023-12-25 21:35:16,522 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-12-25 21:35:16,679 INFO  L134       CoverageAnalysis]: Checked inductivity of 754 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 730 trivial. 0 not checked.
[2023-12-25 21:35:16,679 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 21:35:16,679 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1373055702]
[2023-12-25 21:35:16,679 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 21:35:16,679 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1738118901]
[2023-12-25 21:35:16,680 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1738118901] provided 1 perfect and 1 imperfect interpolant sequences
[2023-12-25 21:35:16,680 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2023-12-25 21:35:16,682 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10
[2023-12-25 21:35:16,683 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1581568171]
[2023-12-25 21:35:16,683 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 21:35:16,687 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-12-25 21:35:16,687 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 21:35:16,689 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-12-25 21:35:16,689 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90
[2023-12-25 21:35:16,690 INFO  L87              Difference]: Start difference. First operand 9739 states and 16217 transitions. Second operand  has 5 states, 5 states have (on average 1147.0) internal successors, (5735), 5 states have internal predecessors, (5735), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 21:35:25,974 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 21:35:25,974 INFO  L93              Difference]: Finished difference Result 33753 states and 55942 transitions.
[2023-12-25 21:35:25,974 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2023-12-25 21:35:25,975 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 1147.0) internal successors, (5735), 5 states have internal predecessors, (5735), 0 states have call successors, (0), 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 6464
[2023-12-25 21:35:25,980 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 21:35:25,994 INFO  L225             Difference]: With dead ends: 33753
[2023-12-25 21:35:25,994 INFO  L226             Difference]: Without dead ends: 17976
[2023-12-25 21:35:26,003 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 12927 GetRequests, 12918 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 21:35:26,005 INFO  L413           NwaCegarLoop]: 23616 mSDtfsCounter, 36452 mSDsluCounter, 22627 mSDsCounter, 0 mSdLazyCounter, 11745 mSolverCounterSat, 779 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36452 SdHoareTripleChecker+Valid, 46243 SdHoareTripleChecker+Invalid, 12524 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 779 IncrementalHoareTripleChecker+Valid, 11745 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.9s IncrementalHoareTripleChecker+Time
[2023-12-25 21:35:26,005 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [36452 Valid, 46243 Invalid, 12524 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [779 Valid, 11745 Invalid, 0 Unknown, 0 Unchecked, 8.9s Time]
[2023-12-25 21:35:26,018 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 17976 states.
[2023-12-25 21:35:26,123 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 17976 to 9741.
[2023-12-25 21:35:26,132 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 9741 states, 9740 states have (on average 1.665195071868583) internal successors, (16219), 9740 states have internal predecessors, (16219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 21:35:26,141 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 9741 states to 9741 states and 16219 transitions.
[2023-12-25 21:35:26,142 INFO  L78                 Accepts]: Start accepts. Automaton has 9741 states and 16219 transitions. Word has length 6464
[2023-12-25 21:35:26,145 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 21:35:26,145 INFO  L495      AbstractCegarLoop]: Abstraction has 9741 states and 16219 transitions.
[2023-12-25 21:35:26,146 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 1147.0) internal successors, (5735), 5 states have internal predecessors, (5735), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 21:35:26,146 INFO  L276                IsEmpty]: Start isEmpty. Operand 9741 states and 16219 transitions.
[2023-12-25 21:35:26,412 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 6466
[2023-12-25 21:35:26,413 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 21:35:26,414 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 21:35:26,496 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 21:35:26,648 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,SelfDestructingSolverStorable14
[2023-12-25 21:35:26,648 INFO  L420      AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 21:35:26,649 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 21:35:26,650 INFO  L85        PathProgramCache]: Analyzing trace with hash -1169217117, now seen corresponding path program 1 times
[2023-12-25 21:35:26,650 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 21:35:26,650 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [332443702]
[2023-12-25 21:35:26,650 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 21:35:26,651 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 21:35:27,431 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 21:35:27,432 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1885742383]
[2023-12-25 21:35:27,433 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 21:35:27,433 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 21:35:27,433 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 21:35:27,434 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 21:35:27,454 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 21:35:34,125 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 21:35:34,308 INFO  L262         TraceCheckSpWp]: Trace formula consists of 28580 conjuncts, 17 conjunts are in the unsatisfiable core
[2023-12-25 21:35:34,377 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 21:35:35,297 INFO  L134       CoverageAnalysis]: Checked inductivity of 754 backedges. 26 proven. 685 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked.
[2023-12-25 21:35:35,298 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-12-25 21:35:35,407 INFO  L134       CoverageAnalysis]: Checked inductivity of 754 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 728 trivial. 0 not checked.
[2023-12-25 21:35:35,408 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 21:35:35,408 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [332443702]
[2023-12-25 21:35:35,408 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 21:35:35,408 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1885742383]
[2023-12-25 21:35:35,408 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1885742383] provided 1 perfect and 1 imperfect interpolant sequences
[2023-12-25 21:35:35,408 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2023-12-25 21:35:35,409 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10
[2023-12-25 21:35:35,409 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [323520614]
[2023-12-25 21:35:35,409 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 21:35:35,412 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-12-25 21:35:35,412 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 21:35:35,414 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-12-25 21:35:35,414 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90
[2023-12-25 21:35:35,414 INFO  L87              Difference]: Start difference. First operand 9741 states and 16219 transitions. Second operand  has 5 states, 5 states have (on average 1147.6) internal successors, (5738), 5 states have internal predecessors, (5738), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 21:35:44,617 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 21:35:44,617 INFO  L93              Difference]: Finished difference Result 33761 states and 55950 transitions.
[2023-12-25 21:35:44,617 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2023-12-25 21:35:44,618 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 1147.6) internal successors, (5738), 5 states have internal predecessors, (5738), 0 states have call successors, (0), 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 6465
[2023-12-25 21:35:44,622 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 21:35:44,636 INFO  L225             Difference]: With dead ends: 33761
[2023-12-25 21:35:44,636 INFO  L226             Difference]: Without dead ends: 17977
[2023-12-25 21:35:44,645 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 12929 GetRequests, 12920 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 21:35:44,645 INFO  L413           NwaCegarLoop]: 23608 mSDtfsCounter, 36444 mSDsluCounter, 22622 mSDsCounter, 0 mSdLazyCounter, 11745 mSolverCounterSat, 779 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36444 SdHoareTripleChecker+Valid, 46230 SdHoareTripleChecker+Invalid, 12524 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 779 IncrementalHoareTripleChecker+Valid, 11745 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.7s IncrementalHoareTripleChecker+Time
[2023-12-25 21:35:44,645 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [36444 Valid, 46230 Invalid, 12524 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [779 Valid, 11745 Invalid, 0 Unknown, 0 Unchecked, 8.7s Time]
[2023-12-25 21:35:44,656 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 17977 states.
[2023-12-25 21:35:44,738 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 17977 to 9743.
[2023-12-25 21:35:44,746 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 9743 states, 9742 states have (on average 1.6650585095462944) internal successors, (16221), 9742 states have internal predecessors, (16221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 21:35:44,755 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 9743 states to 9743 states and 16221 transitions.
[2023-12-25 21:35:44,755 INFO  L78                 Accepts]: Start accepts. Automaton has 9743 states and 16221 transitions. Word has length 6465
[2023-12-25 21:35:44,758 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 21:35:44,758 INFO  L495      AbstractCegarLoop]: Abstraction has 9743 states and 16221 transitions.
[2023-12-25 21:35:44,759 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 1147.6) internal successors, (5738), 5 states have internal predecessors, (5738), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 21:35:44,759 INFO  L276                IsEmpty]: Start isEmpty. Operand 9743 states and 16221 transitions.
[2023-12-25 21:35:45,011 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 6467
[2023-12-25 21:35:45,011 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 21:35:45,013 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-12-25 21:35:45,100 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0
[2023-12-25 21:35:45,232 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,SelfDestructingSolverStorable15
[2023-12-25 21:35:45,232 INFO  L420      AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 21:35:45,233 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 21:35:45,234 INFO  L85        PathProgramCache]: Analyzing trace with hash 1488811669, now seen corresponding path program 1 times
[2023-12-25 21:35:45,234 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 21:35:45,234 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [787824886]
[2023-12-25 21:35:45,235 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 21:35:45,235 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 21:35:45,855 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 21:35:45,855 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1060371596]
[2023-12-25 21:35:45,856 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 21:35:45,856 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 21:35:45,856 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 21:35:45,857 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 21:35:45,882 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 21:35:52,491 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 21:35:52,676 INFO  L262         TraceCheckSpWp]: Trace formula consists of 28583 conjuncts, 17 conjunts are in the unsatisfiable core
[2023-12-25 21:35:52,870 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 21:35:53,735 INFO  L134       CoverageAnalysis]: Checked inductivity of 754 backedges. 28 proven. 685 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked.
[2023-12-25 21:35:53,736 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-12-25 21:35:53,848 INFO  L134       CoverageAnalysis]: Checked inductivity of 754 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 726 trivial. 0 not checked.
[2023-12-25 21:35:53,848 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 21:35:53,848 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [787824886]
[2023-12-25 21:35:53,848 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 21:35:53,848 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1060371596]
[2023-12-25 21:35:53,848 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1060371596] provided 1 perfect and 1 imperfect interpolant sequences
[2023-12-25 21:35:53,848 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2023-12-25 21:35:53,849 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10
[2023-12-25 21:35:53,849 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [42460199]
[2023-12-25 21:35:53,850 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 21:35:53,852 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-12-25 21:35:53,852 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 21:35:53,854 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-12-25 21:35:53,854 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90
[2023-12-25 21:35:53,855 INFO  L87              Difference]: Start difference. First operand 9743 states and 16221 transitions. Second operand  has 5 states, 5 states have (on average 1148.2) internal successors, (5741), 5 states have internal predecessors, (5741), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 21:36:01,192 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 21:36:01,192 INFO  L93              Difference]: Finished difference Result 33769 states and 55958 transitions.
[2023-12-25 21:36:01,192 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2023-12-25 21:36:01,193 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 1148.2) internal successors, (5741), 5 states have internal predecessors, (5741), 0 states have call successors, (0), 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 6466
[2023-12-25 21:36:01,197 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 21:36:01,212 INFO  L225             Difference]: With dead ends: 33769
[2023-12-25 21:36:01,212 INFO  L226             Difference]: Without dead ends: 17978
[2023-12-25 21:36:01,222 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 12931 GetRequests, 12922 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 21:36:01,222 INFO  L413           NwaCegarLoop]: 23600 mSDtfsCounter, 36436 mSDsluCounter, 22617 mSDsCounter, 0 mSdLazyCounter, 11745 mSolverCounterSat, 779 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36436 SdHoareTripleChecker+Valid, 46217 SdHoareTripleChecker+Invalid, 12524 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 779 IncrementalHoareTripleChecker+Valid, 11745 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.9s IncrementalHoareTripleChecker+Time
[2023-12-25 21:36:01,223 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [36436 Valid, 46217 Invalid, 12524 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [779 Valid, 11745 Invalid, 0 Unknown, 0 Unchecked, 6.9s Time]
[2023-12-25 21:36:01,236 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 17978 states.
[2023-12-25 21:36:01,328 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 17978 to 9745.
[2023-12-25 21:36:01,336 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 9745 states, 9744 states have (on average 1.6649220032840724) internal successors, (16223), 9744 states have internal predecessors, (16223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 21:36:01,346 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 9745 states to 9745 states and 16223 transitions.
[2023-12-25 21:36:01,346 INFO  L78                 Accepts]: Start accepts. Automaton has 9745 states and 16223 transitions. Word has length 6466
[2023-12-25 21:36:01,349 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 21:36:01,349 INFO  L495      AbstractCegarLoop]: Abstraction has 9745 states and 16223 transitions.
[2023-12-25 21:36:01,350 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 1148.2) internal successors, (5741), 5 states have internal predecessors, (5741), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 21:36:01,350 INFO  L276                IsEmpty]: Start isEmpty. Operand 9745 states and 16223 transitions.
[2023-12-25 21:36:01,604 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 6468
[2023-12-25 21:36:01,604 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 21:36:01,606 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 21:36:01,695 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 21:36:01,832 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 21:36:01,833 INFO  L420      AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 21:36:01,833 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 21:36:01,834 INFO  L85        PathProgramCache]: Analyzing trace with hash -1798242563, now seen corresponding path program 1 times
[2023-12-25 21:36:01,835 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 21:36:01,835 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1057297164]
[2023-12-25 21:36:01,835 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 21:36:01,835 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 21:36:02,496 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 21:36:02,496 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [870791409]
[2023-12-25 21:36:02,498 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 21:36:02,498 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 21:36:02,498 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 21:36:02,499 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 21:36:02,500 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 21:36:09,103 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 21:36:09,293 INFO  L262         TraceCheckSpWp]: Trace formula consists of 28586 conjuncts, 17 conjunts are in the unsatisfiable core
[2023-12-25 21:36:09,362 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 21:36:10,061 INFO  L134       CoverageAnalysis]: Checked inductivity of 754 backedges. 30 proven. 685 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked.
[2023-12-25 21:36:10,061 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-12-25 21:36:10,305 INFO  L134       CoverageAnalysis]: Checked inductivity of 754 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 724 trivial. 0 not checked.
[2023-12-25 21:36:10,306 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 21:36:10,306 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1057297164]
[2023-12-25 21:36:10,306 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 21:36:10,306 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [870791409]
[2023-12-25 21:36:10,306 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [870791409] provided 1 perfect and 1 imperfect interpolant sequences
[2023-12-25 21:36:10,332 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2023-12-25 21:36:10,333 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10
[2023-12-25 21:36:10,333 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1428567553]
[2023-12-25 21:36:10,333 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 21:36:10,336 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-12-25 21:36:10,336 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 21:36:10,338 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-12-25 21:36:10,338 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90
[2023-12-25 21:36:10,339 INFO  L87              Difference]: Start difference. First operand 9745 states and 16223 transitions. Second operand  has 5 states, 5 states have (on average 1148.8) internal successors, (5744), 5 states have internal predecessors, (5744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 21:36:17,582 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 21:36:17,582 INFO  L93              Difference]: Finished difference Result 33777 states and 55966 transitions.
[2023-12-25 21:36:17,582 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2023-12-25 21:36:17,583 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 1148.8) internal successors, (5744), 5 states have internal predecessors, (5744), 0 states have call successors, (0), 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 6467
[2023-12-25 21:36:17,587 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 21:36:17,600 INFO  L225             Difference]: With dead ends: 33777
[2023-12-25 21:36:17,600 INFO  L226             Difference]: Without dead ends: 17979
[2023-12-25 21:36:17,607 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 12933 GetRequests, 12924 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 21:36:17,607 INFO  L413           NwaCegarLoop]: 23592 mSDtfsCounter, 36428 mSDsluCounter, 22612 mSDsCounter, 0 mSdLazyCounter, 11745 mSolverCounterSat, 779 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36428 SdHoareTripleChecker+Valid, 46204 SdHoareTripleChecker+Invalid, 12524 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 779 IncrementalHoareTripleChecker+Valid, 11745 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.9s IncrementalHoareTripleChecker+Time
[2023-12-25 21:36:17,607 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [36428 Valid, 46204 Invalid, 12524 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [779 Valid, 11745 Invalid, 0 Unknown, 0 Unchecked, 6.9s Time]
[2023-12-25 21:36:17,619 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 17979 states.
[2023-12-25 21:36:17,717 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 17979 to 9747.
[2023-12-25 21:36:17,724 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 9747 states, 9746 states have (on average 1.664785553047404) internal successors, (16225), 9746 states have internal predecessors, (16225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 21:36:17,732 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 9747 states to 9747 states and 16225 transitions.
[2023-12-25 21:36:17,733 INFO  L78                 Accepts]: Start accepts. Automaton has 9747 states and 16225 transitions. Word has length 6467
[2023-12-25 21:36:17,735 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 21:36:17,735 INFO  L495      AbstractCegarLoop]: Abstraction has 9747 states and 16225 transitions.
[2023-12-25 21:36:17,736 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 1148.8) internal successors, (5744), 5 states have internal predecessors, (5744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 21:36:17,736 INFO  L276                IsEmpty]: Start isEmpty. Operand 9747 states and 16225 transitions.
[2023-12-25 21:36:17,971 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 6469
[2023-12-25 21:36:17,972 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 21:36:17,973 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 21:36:18,045 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0
[2023-12-25 21:36:18,186 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17
[2023-12-25 21:36:18,186 INFO  L420      AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 21:36:18,187 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 21:36:18,190 INFO  L85        PathProgramCache]: Analyzing trace with hash 2138167673, now seen corresponding path program 1 times
[2023-12-25 21:36:18,190 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 21:36:18,190 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1076327224]
[2023-12-25 21:36:18,190 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 21:36:18,190 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 21:36:18,810 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 21:36:18,810 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2086317172]
[2023-12-25 21:36:18,811 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 21:36:18,811 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 21:36:18,811 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 21:36:18,812 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 21:36:18,815 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 21:36:25,511 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 21:36:25,684 INFO  L262         TraceCheckSpWp]: Trace formula consists of 28590 conjuncts, 17 conjunts are in the unsatisfiable core
[2023-12-25 21:36:25,749 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 21:36:26,675 INFO  L134       CoverageAnalysis]: Checked inductivity of 754 backedges. 32 proven. 685 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked.
[2023-12-25 21:36:26,676 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-12-25 21:36:26,964 INFO  L134       CoverageAnalysis]: Checked inductivity of 754 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 722 trivial. 0 not checked.
[2023-12-25 21:36:26,965 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 21:36:26,965 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1076327224]
[2023-12-25 21:36:26,965 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 21:36:26,965 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2086317172]
[2023-12-25 21:36:26,965 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [2086317172] provided 1 perfect and 1 imperfect interpolant sequences
[2023-12-25 21:36:26,965 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2023-12-25 21:36:26,966 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10
[2023-12-25 21:36:26,966 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2109047409]
[2023-12-25 21:36:26,966 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 21:36:26,969 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-12-25 21:36:26,969 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 21:36:26,971 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-12-25 21:36:26,971 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90
[2023-12-25 21:36:26,972 INFO  L87              Difference]: Start difference. First operand 9747 states and 16225 transitions. Second operand  has 5 states, 5 states have (on average 1149.4) internal successors, (5747), 5 states have internal predecessors, (5747), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 21:36:35,527 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 21:36:35,528 INFO  L93              Difference]: Finished difference Result 33785 states and 55974 transitions.
[2023-12-25 21:36:35,528 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2023-12-25 21:36:35,529 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 1149.4) internal successors, (5747), 5 states have internal predecessors, (5747), 0 states have call successors, (0), 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 6468
[2023-12-25 21:36:35,533 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 21:36:35,549 INFO  L225             Difference]: With dead ends: 33785
[2023-12-25 21:36:35,550 INFO  L226             Difference]: Without dead ends: 17980
[2023-12-25 21:36:35,559 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 12935 GetRequests, 12926 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 21:36:35,560 INFO  L413           NwaCegarLoop]: 23584 mSDtfsCounter, 25050 mSDsluCounter, 34358 mSDsCounter, 0 mSdLazyCounter, 16121 mSolverCounterSat, 779 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25050 SdHoareTripleChecker+Valid, 57942 SdHoareTripleChecker+Invalid, 16900 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 779 IncrementalHoareTripleChecker+Valid, 16121 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.1s IncrementalHoareTripleChecker+Time
[2023-12-25 21:36:35,560 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [25050 Valid, 57942 Invalid, 16900 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [779 Valid, 16121 Invalid, 0 Unknown, 0 Unchecked, 8.1s Time]
[2023-12-25 21:36:35,575 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 17980 states.
[2023-12-25 21:36:35,672 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 17980 to 9749.
[2023-12-25 21:36:35,680 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 9749 states, 9748 states have (on average 1.6646491588018055) internal successors, (16227), 9748 states have internal predecessors, (16227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 21:36:35,689 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 9749 states to 9749 states and 16227 transitions.
[2023-12-25 21:36:35,689 INFO  L78                 Accepts]: Start accepts. Automaton has 9749 states and 16227 transitions. Word has length 6468
[2023-12-25 21:36:35,691 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 21:36:35,692 INFO  L495      AbstractCegarLoop]: Abstraction has 9749 states and 16227 transitions.
[2023-12-25 21:36:35,692 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 1149.4) internal successors, (5747), 5 states have internal predecessors, (5747), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 21:36:35,692 INFO  L276                IsEmpty]: Start isEmpty. Operand 9749 states and 16227 transitions.
[2023-12-25 21:36:35,946 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 6470
[2023-12-25 21:36:35,946 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 21:36:35,948 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 21:36:36,033 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0
[2023-12-25 21:36:36,176 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 21:36:36,177 INFO  L420      AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 21:36:36,177 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 21:36:36,178 INFO  L85        PathProgramCache]: Analyzing trace with hash 1993145749, now seen corresponding path program 1 times
[2023-12-25 21:36:36,178 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 21:36:36,178 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1625793621]
[2023-12-25 21:36:36,178 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 21:36:36,178 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 21:36:36,783 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 21:36:36,783 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2136607988]
[2023-12-25 21:36:36,784 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 21:36:36,784 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 21:36:36,784 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 21:36:36,785 INFO  L229       MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-25 21:36:36,787 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process
[2023-12-25 21:36:43,420 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 21:36:43,609 INFO  L262         TraceCheckSpWp]: Trace formula consists of 28593 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-12-25 21:36:43,673 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 21:36:44,730 INFO  L134       CoverageAnalysis]: Checked inductivity of 754 backedges. 34 proven. 685 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked.
[2023-12-25 21:36:44,731 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-12-25 21:36:44,871 INFO  L134       CoverageAnalysis]: Checked inductivity of 754 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 720 trivial. 0 not checked.
[2023-12-25 21:36:44,871 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 21:36:44,871 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1625793621]
[2023-12-25 21:36:44,871 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 21:36:44,871 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2136607988]
[2023-12-25 21:36:44,871 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [2136607988] provided 1 perfect and 1 imperfect interpolant sequences
[2023-12-25 21:36:44,871 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2023-12-25 21:36:44,872 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8] total 12
[2023-12-25 21:36:44,872 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1857725133]
[2023-12-25 21:36:44,872 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 21:36:44,875 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2023-12-25 21:36:44,875 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 21:36:44,877 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2023-12-25 21:36:44,878 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132
[2023-12-25 21:36:44,878 INFO  L87              Difference]: Start difference. First operand 9749 states and 16227 transitions. Second operand  has 6 states, 6 states have (on average 958.3333333333334) internal successors, (5750), 6 states have internal predecessors, (5750), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 21:36:59,964 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 21:36:59,964 INFO  L93              Difference]: Finished difference Result 42107 states and 69818 transitions.
[2023-12-25 21:36:59,964 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. 
[2023-12-25 21:36:59,966 INFO  L78                 Accepts]: Start accepts. Automaton has  has 6 states, 6 states have (on average 958.3333333333334) internal successors, (5750), 6 states have internal predecessors, (5750), 0 states have call successors, (0), 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 6469
[2023-12-25 21:36:59,969 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 21:36:59,989 INFO  L225             Difference]: With dead ends: 42107
[2023-12-25 21:36:59,989 INFO  L226             Difference]: Without dead ends: 26295
[2023-12-25 21:36:59,998 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 12938 GetRequests, 12926 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 21:37:00,000 INFO  L413           NwaCegarLoop]: 23578 mSDtfsCounter, 61503 mSDsluCounter, 55574 mSDsCounter, 0 mSdLazyCounter, 24708 mSolverCounterSat, 782 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61503 SdHoareTripleChecker+Valid, 79152 SdHoareTripleChecker+Invalid, 25490 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 782 IncrementalHoareTripleChecker+Valid, 24708 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.4s IncrementalHoareTripleChecker+Time
[2023-12-25 21:37:00,000 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [61503 Valid, 79152 Invalid, 25490 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [782 Valid, 24708 Invalid, 0 Unknown, 0 Unchecked, 14.4s Time]
[2023-12-25 21:37:00,019 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 26295 states.
[2023-12-25 21:37:00,117 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 26295 to 9751.
[2023-12-25 21:37:00,125 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 9751 states, 9750 states have (on average 1.6645128205128206) internal successors, (16229), 9750 states have internal predecessors, (16229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 21:37:00,134 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 9751 states to 9751 states and 16229 transitions.
[2023-12-25 21:37:00,134 INFO  L78                 Accepts]: Start accepts. Automaton has 9751 states and 16229 transitions. Word has length 6469
[2023-12-25 21:37:00,137 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 21:37:00,137 INFO  L495      AbstractCegarLoop]: Abstraction has 9751 states and 16229 transitions.
[2023-12-25 21:37:00,138 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 6 states, 6 states have (on average 958.3333333333334) internal successors, (5750), 6 states have internal predecessors, (5750), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 21:37:00,138 INFO  L276                IsEmpty]: Start isEmpty. Operand 9751 states and 16229 transitions.
[2023-12-25 21:37:00,365 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 6471
[2023-12-25 21:37:00,366 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 21:37:00,367 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 21:37:00,438 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0
[2023-12-25 21:37:00,573 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 21:37:00,587 INFO  L420      AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 21:37:00,588 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 21:37:00,589 INFO  L85        PathProgramCache]: Analyzing trace with hash -1008631009, now seen corresponding path program 1 times
[2023-12-25 21:37:00,589 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 21:37:00,589 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2044077856]
[2023-12-25 21:37:00,589 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 21:37:00,589 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 21:37:01,190 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 21:37:01,190 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1534476742]
[2023-12-25 21:37:01,192 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 21:37:01,192 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 21:37:01,192 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 21:37:01,193 INFO  L229       MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-25 21:37:01,195 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process
[2023-12-25 21:37:07,846 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 21:37:08,029 INFO  L262         TraceCheckSpWp]: Trace formula consists of 28596 conjuncts, 17 conjunts are in the unsatisfiable core
[2023-12-25 21:37:08,094 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 21:37:08,851 INFO  L134       CoverageAnalysis]: Checked inductivity of 754 backedges. 36 proven. 685 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked.
[2023-12-25 21:37:08,851 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-12-25 21:37:09,214 INFO  L134       CoverageAnalysis]: Checked inductivity of 754 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 718 trivial. 0 not checked.
[2023-12-25 21:37:09,214 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 21:37:09,214 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2044077856]
[2023-12-25 21:37:09,215 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 21:37:09,215 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1534476742]
[2023-12-25 21:37:09,215 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1534476742] provided 1 perfect and 1 imperfect interpolant sequences
[2023-12-25 21:37:09,215 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2023-12-25 21:37:09,216 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10
[2023-12-25 21:37:09,216 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1472417362]
[2023-12-25 21:37:09,216 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 21:37:09,219 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-12-25 21:37:09,219 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 21:37:09,221 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-12-25 21:37:09,221 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90
[2023-12-25 21:37:09,222 INFO  L87              Difference]: Start difference. First operand 9751 states and 16229 transitions. Second operand  has 5 states, 5 states have (on average 1150.6) internal successors, (5753), 5 states have internal predecessors, (5753), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 21:37:16,934 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 21:37:16,934 INFO  L93              Difference]: Finished difference Result 33801 states and 55990 transitions.
[2023-12-25 21:37:16,935 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2023-12-25 21:37:16,936 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 1150.6) internal successors, (5753), 5 states have internal predecessors, (5753), 0 states have call successors, (0), 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 6470
[2023-12-25 21:37:16,939 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 21:37:16,951 INFO  L225             Difference]: With dead ends: 33801
[2023-12-25 21:37:16,952 INFO  L226             Difference]: Without dead ends: 17982
[2023-12-25 21:37:16,956 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 12939 GetRequests, 12930 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 21:37:16,962 INFO  L413           NwaCegarLoop]: 23568 mSDtfsCounter, 36404 mSDsluCounter, 22597 mSDsCounter, 0 mSdLazyCounter, 11745 mSolverCounterSat, 779 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36404 SdHoareTripleChecker+Valid, 46165 SdHoareTripleChecker+Invalid, 12524 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 779 IncrementalHoareTripleChecker+Valid, 11745 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.2s IncrementalHoareTripleChecker+Time
[2023-12-25 21:37:16,962 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [36404 Valid, 46165 Invalid, 12524 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [779 Valid, 11745 Invalid, 0 Unknown, 0 Unchecked, 7.2s Time]
[2023-12-25 21:37:16,973 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 17982 states.
[2023-12-25 21:37:17,048 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 17982 to 9753.
[2023-12-25 21:37:17,056 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 9753 states, 9752 states have (on average 1.6643765381460214) internal successors, (16231), 9752 states have internal predecessors, (16231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 21:37:17,064 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 9753 states to 9753 states and 16231 transitions.
[2023-12-25 21:37:17,065 INFO  L78                 Accepts]: Start accepts. Automaton has 9753 states and 16231 transitions. Word has length 6470
[2023-12-25 21:37:17,067 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 21:37:17,067 INFO  L495      AbstractCegarLoop]: Abstraction has 9753 states and 16231 transitions.
[2023-12-25 21:37:17,068 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 1150.6) internal successors, (5753), 5 states have internal predecessors, (5753), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 21:37:17,068 INFO  L276                IsEmpty]: Start isEmpty. Operand 9753 states and 16231 transitions.
[2023-12-25 21:37:17,267 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 6472
[2023-12-25 21:37:17,268 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 21:37:17,269 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 21:37:17,351 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0
[2023-12-25 21:37:17,488 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 21:37:17,489 INFO  L420      AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 21:37:17,489 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 21:37:17,489 INFO  L85        PathProgramCache]: Analyzing trace with hash 835325679, now seen corresponding path program 1 times
[2023-12-25 21:37:17,489 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 21:37:17,490 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1842708518]
[2023-12-25 21:37:17,490 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 21:37:17,490 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 21:37:18,133 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 21:37:18,134 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [87331394]
[2023-12-25 21:37:18,135 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 21:37:18,135 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 21:37:18,135 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 21:37:18,136 INFO  L229       MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-25 21:37:18,138 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process
[2023-12-25 21:37:24,843 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 21:37:25,012 INFO  L262         TraceCheckSpWp]: Trace formula consists of 28599 conjuncts, 17 conjunts are in the unsatisfiable core
[2023-12-25 21:37:25,115 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 21:37:26,025 INFO  L134       CoverageAnalysis]: Checked inductivity of 754 backedges. 38 proven. 685 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked.
[2023-12-25 21:37:26,025 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-12-25 21:37:26,175 INFO  L134       CoverageAnalysis]: Checked inductivity of 754 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 716 trivial. 0 not checked.
[2023-12-25 21:37:26,176 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 21:37:26,176 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1842708518]
[2023-12-25 21:37:26,176 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 21:37:26,176 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [87331394]
[2023-12-25 21:37:26,176 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [87331394] provided 1 perfect and 1 imperfect interpolant sequences
[2023-12-25 21:37:26,176 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2023-12-25 21:37:26,177 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10
[2023-12-25 21:37:26,177 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [250542866]
[2023-12-25 21:37:26,177 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 21:37:26,180 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-12-25 21:37:26,180 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 21:37:26,202 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-12-25 21:37:26,202 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90
[2023-12-25 21:37:26,204 INFO  L87              Difference]: Start difference. First operand 9753 states and 16231 transitions. Second operand  has 5 states, 5 states have (on average 1151.2) internal successors, (5756), 5 states have internal predecessors, (5756), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 21:37:33,184 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 21:37:33,184 INFO  L93              Difference]: Finished difference Result 33809 states and 55998 transitions.
[2023-12-25 21:37:33,186 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2023-12-25 21:37:33,187 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 1151.2) internal successors, (5756), 5 states have internal predecessors, (5756), 0 states have call successors, (0), 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 6471
[2023-12-25 21:37:33,192 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 21:37:33,211 INFO  L225             Difference]: With dead ends: 33809
[2023-12-25 21:37:33,211 INFO  L226             Difference]: Without dead ends: 17983
[2023-12-25 21:37:33,224 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 12941 GetRequests, 12932 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 21:37:33,224 INFO  L413           NwaCegarLoop]: 23560 mSDtfsCounter, 36379 mSDsluCounter, 22593 mSDsCounter, 0 mSdLazyCounter, 11745 mSolverCounterSat, 779 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36379 SdHoareTripleChecker+Valid, 46153 SdHoareTripleChecker+Invalid, 12524 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 779 IncrementalHoareTripleChecker+Valid, 11745 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.6s IncrementalHoareTripleChecker+Time
[2023-12-25 21:37:33,224 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [36379 Valid, 46153 Invalid, 12524 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [779 Valid, 11745 Invalid, 0 Unknown, 0 Unchecked, 6.6s Time]
[2023-12-25 21:37:33,241 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 17983 states.
[2023-12-25 21:37:33,340 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 17983 to 9755.
[2023-12-25 21:37:33,350 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 9755 states, 9754 states have (on average 1.6642403116670084) internal successors, (16233), 9754 states have internal predecessors, (16233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 21:37:33,359 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 9755 states to 9755 states and 16233 transitions.
[2023-12-25 21:37:33,360 INFO  L78                 Accepts]: Start accepts. Automaton has 9755 states and 16233 transitions. Word has length 6471
[2023-12-25 21:37:33,363 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 21:37:33,363 INFO  L495      AbstractCegarLoop]: Abstraction has 9755 states and 16233 transitions.
[2023-12-25 21:37:33,363 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 1151.2) internal successors, (5756), 5 states have internal predecessors, (5756), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 21:37:33,364 INFO  L276                IsEmpty]: Start isEmpty. Operand 9755 states and 16233 transitions.
[2023-12-25 21:37:33,620 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 6473
[2023-12-25 21:37:33,621 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 21:37:33,622 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 21:37:33,702 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0
[2023-12-25 21:37:33,836 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 21:37:33,836 INFO  L420      AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 21:37:33,837 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 21:37:33,838 INFO  L85        PathProgramCache]: Analyzing trace with hash -963601149, now seen corresponding path program 1 times
[2023-12-25 21:37:33,838 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 21:37:33,838 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1859745260]
[2023-12-25 21:37:33,838 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 21:37:33,839 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 21:37:34,426 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 21:37:34,426 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1036608609]
[2023-12-25 21:37:34,427 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 21:37:34,428 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 21:37:34,428 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 21:37:34,429 INFO  L229       MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-25 21:37:34,429 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process
[2023-12-25 21:37:41,333 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 21:37:41,513 INFO  L262         TraceCheckSpWp]: Trace formula consists of 28603 conjuncts, 17 conjunts are in the unsatisfiable core
[2023-12-25 21:37:41,754 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 21:37:42,482 INFO  L134       CoverageAnalysis]: Checked inductivity of 754 backedges. 40 proven. 685 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked.
[2023-12-25 21:37:42,482 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-12-25 21:37:42,597 INFO  L134       CoverageAnalysis]: Checked inductivity of 754 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 714 trivial. 0 not checked.
[2023-12-25 21:37:42,597 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 21:37:42,597 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1859745260]
[2023-12-25 21:37:42,597 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 21:37:42,597 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1036608609]
[2023-12-25 21:37:42,597 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1036608609] provided 1 perfect and 1 imperfect interpolant sequences
[2023-12-25 21:37:42,598 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2023-12-25 21:37:42,598 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10
[2023-12-25 21:37:42,599 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2011822142]
[2023-12-25 21:37:42,599 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 21:37:42,601 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-12-25 21:37:42,601 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 21:37:42,604 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-12-25 21:37:42,604 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90
[2023-12-25 21:37:42,605 INFO  L87              Difference]: Start difference. First operand 9755 states and 16233 transitions. Second operand  has 5 states, 5 states have (on average 1151.8) internal successors, (5759), 5 states have internal predecessors, (5759), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 21:37:50,370 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 21:37:50,370 INFO  L93              Difference]: Finished difference Result 33817 states and 56006 transitions.
[2023-12-25 21:37:50,370 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2023-12-25 21:37:50,372 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 1151.8) internal successors, (5759), 5 states have internal predecessors, (5759), 0 states have call successors, (0), 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 6472
[2023-12-25 21:37:50,375 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 21:37:50,388 INFO  L225             Difference]: With dead ends: 33817
[2023-12-25 21:37:50,388 INFO  L226             Difference]: Without dead ends: 17984
[2023-12-25 21:37:50,395 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 12943 GetRequests, 12934 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 21:37:50,396 INFO  L413           NwaCegarLoop]: 23552 mSDtfsCounter, 25026 mSDsluCounter, 34318 mSDsCounter, 0 mSdLazyCounter, 16121 mSolverCounterSat, 779 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25026 SdHoareTripleChecker+Valid, 57870 SdHoareTripleChecker+Invalid, 16900 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 779 IncrementalHoareTripleChecker+Valid, 16121 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.3s IncrementalHoareTripleChecker+Time
[2023-12-25 21:37:50,396 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [25026 Valid, 57870 Invalid, 16900 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [779 Valid, 16121 Invalid, 0 Unknown, 0 Unchecked, 7.3s Time]
[2023-12-25 21:37:50,409 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 17984 states.
[2023-12-25 21:37:50,488 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 17984 to 9757.
[2023-12-25 21:37:50,497 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 9757 states, 9756 states have (on average 1.6641041410414104) internal successors, (16235), 9756 states have internal predecessors, (16235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 21:37:50,506 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 9757 states to 9757 states and 16235 transitions.
[2023-12-25 21:37:50,506 INFO  L78                 Accepts]: Start accepts. Automaton has 9757 states and 16235 transitions. Word has length 6472
[2023-12-25 21:37:50,509 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 21:37:50,509 INFO  L495      AbstractCegarLoop]: Abstraction has 9757 states and 16235 transitions.
[2023-12-25 21:37:50,510 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 1151.8) internal successors, (5759), 5 states have internal predecessors, (5759), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 21:37:50,510 INFO  L276                IsEmpty]: Start isEmpty. Operand 9757 states and 16235 transitions.
[2023-12-25 21:37:50,712 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 6474
[2023-12-25 21:37:50,712 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 21:37:50,713 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 21:37:50,791 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 21:37:50,925 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,SelfDestructingSolverStorable22
[2023-12-25 21:37:50,926 INFO  L420      AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 21:37:50,927 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 21:37:50,928 INFO  L85        PathProgramCache]: Analyzing trace with hash 1983290503, now seen corresponding path program 1 times
[2023-12-25 21:37:50,928 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 21:37:50,928 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [261084271]
[2023-12-25 21:37:50,928 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 21:37:50,929 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 21:37:51,720 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 21:37:51,720 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [530807756]
[2023-12-25 21:37:51,721 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 21:37:51,721 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 21:37:51,722 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 21:37:51,722 INFO  L229       MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-25 21:37:51,725 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process
[2023-12-25 21:37:58,505 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 21:37:58,681 INFO  L262         TraceCheckSpWp]: Trace formula consists of 28606 conjuncts, 17 conjunts are in the unsatisfiable core
[2023-12-25 21:37:58,742 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 21:37:59,752 INFO  L134       CoverageAnalysis]: Checked inductivity of 754 backedges. 42 proven. 685 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked.
[2023-12-25 21:37:59,753 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-12-25 21:37:59,891 INFO  L134       CoverageAnalysis]: Checked inductivity of 754 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 712 trivial. 0 not checked.
[2023-12-25 21:37:59,891 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 21:37:59,891 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [261084271]
[2023-12-25 21:37:59,891 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 21:37:59,891 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [530807756]
[2023-12-25 21:37:59,891 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [530807756] provided 1 perfect and 1 imperfect interpolant sequences
[2023-12-25 21:37:59,892 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2023-12-25 21:37:59,892 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10
[2023-12-25 21:37:59,893 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1641656633]
[2023-12-25 21:37:59,893 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 21:37:59,895 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-12-25 21:37:59,896 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 21:37:59,898 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-12-25 21:37:59,898 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90
[2023-12-25 21:37:59,899 INFO  L87              Difference]: Start difference. First operand 9757 states and 16235 transitions. Second operand  has 5 states, 5 states have (on average 1152.4) internal successors, (5762), 5 states have internal predecessors, (5762), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 21:38:08,372 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 21:38:08,372 INFO  L93              Difference]: Finished difference Result 33825 states and 56014 transitions.
[2023-12-25 21:38:08,372 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2023-12-25 21:38:08,374 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 1152.4) internal successors, (5762), 5 states have internal predecessors, (5762), 0 states have call successors, (0), 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 6473
[2023-12-25 21:38:08,378 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 21:38:08,393 INFO  L225             Difference]: With dead ends: 33825
[2023-12-25 21:38:08,394 INFO  L226             Difference]: Without dead ends: 17985
[2023-12-25 21:38:08,405 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 12945 GetRequests, 12936 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 21:38:08,406 INFO  L413           NwaCegarLoop]: 23544 mSDtfsCounter, 36380 mSDsluCounter, 22582 mSDsCounter, 0 mSdLazyCounter, 11745 mSolverCounterSat, 779 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36380 SdHoareTripleChecker+Valid, 46126 SdHoareTripleChecker+Invalid, 12524 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 779 IncrementalHoareTripleChecker+Valid, 11745 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.0s IncrementalHoareTripleChecker+Time
[2023-12-25 21:38:08,406 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [36380 Valid, 46126 Invalid, 12524 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [779 Valid, 11745 Invalid, 0 Unknown, 0 Unchecked, 8.0s Time]
[2023-12-25 21:38:08,418 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 17985 states.
[2023-12-25 21:38:08,562 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 17985 to 9759.
[2023-12-25 21:38:08,571 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 9759 states, 9758 states have (on average 1.6639680262348842) internal successors, (16237), 9758 states have internal predecessors, (16237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 21:38:08,580 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 9759 states to 9759 states and 16237 transitions.
[2023-12-25 21:38:08,581 INFO  L78                 Accepts]: Start accepts. Automaton has 9759 states and 16237 transitions. Word has length 6473
[2023-12-25 21:38:08,584 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 21:38:08,584 INFO  L495      AbstractCegarLoop]: Abstraction has 9759 states and 16237 transitions.
[2023-12-25 21:38:08,584 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 1152.4) internal successors, (5762), 5 states have internal predecessors, (5762), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 21:38:08,585 INFO  L276                IsEmpty]: Start isEmpty. Operand 9759 states and 16237 transitions.
[2023-12-25 21:38:08,790 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 6475
[2023-12-25 21:38:08,790 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 21:38:08,792 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 21:38:08,880 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0
[2023-12-25 21:38:09,018 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,SelfDestructingSolverStorable23
[2023-12-25 21:38:09,019 INFO  L420      AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 21:38:09,019 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 21:38:09,019 INFO  L85        PathProgramCache]: Analyzing trace with hash -1236948311, now seen corresponding path program 1 times
[2023-12-25 21:38:09,020 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 21:38:09,020 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1212884920]
[2023-12-25 21:38:09,020 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 21:38:09,020 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 21:38:09,621 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 21:38:09,621 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2060650615]
[2023-12-25 21:38:09,623 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 21:38:09,623 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 21:38:09,623 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 21:38:09,624 INFO  L229       MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-25 21:38:09,626 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process
[2023-12-25 21:38:16,314 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 21:38:16,493 INFO  L262         TraceCheckSpWp]: Trace formula consists of 28609 conjuncts, 17 conjunts are in the unsatisfiable core
[2023-12-25 21:38:16,561 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 21:38:17,302 INFO  L134       CoverageAnalysis]: Checked inductivity of 754 backedges. 44 proven. 685 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked.
[2023-12-25 21:38:17,302 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-12-25 21:38:17,408 INFO  L134       CoverageAnalysis]: Checked inductivity of 754 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 710 trivial. 0 not checked.
[2023-12-25 21:38:17,408 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 21:38:17,408 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1212884920]
[2023-12-25 21:38:17,408 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 21:38:17,409 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2060650615]
[2023-12-25 21:38:17,409 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [2060650615] provided 1 perfect and 1 imperfect interpolant sequences
[2023-12-25 21:38:17,409 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2023-12-25 21:38:17,410 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10
[2023-12-25 21:38:17,410 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [873006045]
[2023-12-25 21:38:17,410 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 21:38:17,413 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-12-25 21:38:17,413 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 21:38:17,415 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-12-25 21:38:17,415 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90
[2023-12-25 21:38:17,415 INFO  L87              Difference]: Start difference. First operand 9759 states and 16237 transitions. Second operand  has 5 states, 5 states have (on average 1153.0) internal successors, (5765), 5 states have internal predecessors, (5765), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 21:38:25,229 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 21:38:25,229 INFO  L93              Difference]: Finished difference Result 33833 states and 56022 transitions.
[2023-12-25 21:38:25,229 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2023-12-25 21:38:25,230 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 1153.0) internal successors, (5765), 5 states have internal predecessors, (5765), 0 states have call successors, (0), 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 6474
[2023-12-25 21:38:25,234 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 21:38:25,247 INFO  L225             Difference]: With dead ends: 33833
[2023-12-25 21:38:25,247 INFO  L226             Difference]: Without dead ends: 17986
[2023-12-25 21:38:25,254 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 12947 GetRequests, 12938 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 21:38:25,255 INFO  L413           NwaCegarLoop]: 23536 mSDtfsCounter, 25014 mSDsluCounter, 34298 mSDsCounter, 0 mSdLazyCounter, 16121 mSolverCounterSat, 779 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25014 SdHoareTripleChecker+Valid, 57834 SdHoareTripleChecker+Invalid, 16900 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 779 IncrementalHoareTripleChecker+Valid, 16121 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.3s IncrementalHoareTripleChecker+Time
[2023-12-25 21:38:25,255 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [25014 Valid, 57834 Invalid, 16900 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [779 Valid, 16121 Invalid, 0 Unknown, 0 Unchecked, 7.3s Time]
[2023-12-25 21:38:25,269 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 17986 states.
[2023-12-25 21:38:25,355 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 17986 to 9761.
[2023-12-25 21:38:25,364 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 9761 states, 9760 states have (on average 1.6638319672131148) internal successors, (16239), 9760 states have internal predecessors, (16239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 21:38:25,374 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 9761 states to 9761 states and 16239 transitions.
[2023-12-25 21:38:25,374 INFO  L78                 Accepts]: Start accepts. Automaton has 9761 states and 16239 transitions. Word has length 6474
[2023-12-25 21:38:25,377 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 21:38:25,377 INFO  L495      AbstractCegarLoop]: Abstraction has 9761 states and 16239 transitions.
[2023-12-25 21:38:25,378 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 1153.0) internal successors, (5765), 5 states have internal predecessors, (5765), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 21:38:25,378 INFO  L276                IsEmpty]: Start isEmpty. Operand 9761 states and 16239 transitions.
[2023-12-25 21:38:25,633 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 6476
[2023-12-25 21:38:25,633 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 21:38:25,634 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 21:38:25,714 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0
[2023-12-25 21:38:25,845 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 21:38:25,845 INFO  L420      AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 21:38:25,846 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 21:38:25,846 INFO  L85        PathProgramCache]: Analyzing trace with hash -1438422559, now seen corresponding path program 1 times
[2023-12-25 21:38:25,847 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 21:38:25,847 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [44787178]
[2023-12-25 21:38:25,847 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 21:38:25,847 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 21:38:26,445 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 21:38:26,445 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1694292525]
[2023-12-25 21:38:26,447 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 21:38:26,447 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 21:38:26,447 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 21:38:26,448 INFO  L229       MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-25 21:38:26,449 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process
[2023-12-25 21:38:33,339 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 21:38:33,538 INFO  L262         TraceCheckSpWp]: Trace formula consists of 28612 conjuncts, 17 conjunts are in the unsatisfiable core
[2023-12-25 21:38:33,609 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 21:38:34,343 INFO  L134       CoverageAnalysis]: Checked inductivity of 754 backedges. 46 proven. 685 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked.
[2023-12-25 21:38:34,343 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-12-25 21:38:34,463 INFO  L134       CoverageAnalysis]: Checked inductivity of 754 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 708 trivial. 0 not checked.
[2023-12-25 21:38:34,463 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 21:38:34,464 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [44787178]
[2023-12-25 21:38:34,464 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 21:38:34,464 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1694292525]
[2023-12-25 21:38:34,464 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1694292525] provided 1 perfect and 1 imperfect interpolant sequences
[2023-12-25 21:38:34,464 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2023-12-25 21:38:34,465 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10
[2023-12-25 21:38:34,465 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1178042589]
[2023-12-25 21:38:34,465 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 21:38:34,468 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-12-25 21:38:34,468 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 21:38:34,470 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-12-25 21:38:34,470 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90
[2023-12-25 21:38:34,471 INFO  L87              Difference]: Start difference. First operand 9761 states and 16239 transitions. Second operand  has 5 states, 5 states have (on average 1153.6) internal successors, (5768), 5 states have internal predecessors, (5768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 21:38:42,803 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 21:38:42,803 INFO  L93              Difference]: Finished difference Result 33841 states and 56030 transitions.
[2023-12-25 21:38:42,803 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2023-12-25 21:38:42,805 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 1153.6) internal successors, (5768), 5 states have internal predecessors, (5768), 0 states have call successors, (0), 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 6475
[2023-12-25 21:38:42,808 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 21:38:42,821 INFO  L225             Difference]: With dead ends: 33841
[2023-12-25 21:38:42,821 INFO  L226             Difference]: Without dead ends: 17987
[2023-12-25 21:38:42,830 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 12949 GetRequests, 12940 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 21:38:42,830 INFO  L413           NwaCegarLoop]: 23528 mSDtfsCounter, 36364 mSDsluCounter, 22572 mSDsCounter, 0 mSdLazyCounter, 11745 mSolverCounterSat, 779 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36364 SdHoareTripleChecker+Valid, 46100 SdHoareTripleChecker+Invalid, 12524 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 779 IncrementalHoareTripleChecker+Valid, 11745 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.9s IncrementalHoareTripleChecker+Time
[2023-12-25 21:38:42,830 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [36364 Valid, 46100 Invalid, 12524 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [779 Valid, 11745 Invalid, 0 Unknown, 0 Unchecked, 7.9s Time]
[2023-12-25 21:38:42,841 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 17987 states.
[2023-12-25 21:38:42,917 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 17987 to 9763.
[2023-12-25 21:38:42,925 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 9763 states, 9762 states have (on average 1.6636959639418152) internal successors, (16241), 9762 states have internal predecessors, (16241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 21:38:42,934 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 9763 states to 9763 states and 16241 transitions.
[2023-12-25 21:38:42,934 INFO  L78                 Accepts]: Start accepts. Automaton has 9763 states and 16241 transitions. Word has length 6475
[2023-12-25 21:38:42,937 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 21:38:42,937 INFO  L495      AbstractCegarLoop]: Abstraction has 9763 states and 16241 transitions.
[2023-12-25 21:38:42,938 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 1153.6) internal successors, (5768), 5 states have internal predecessors, (5768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 21:38:42,938 INFO  L276                IsEmpty]: Start isEmpty. Operand 9763 states and 16241 transitions.
[2023-12-25 21:38:43,180 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 6477
[2023-12-25 21:38:43,180 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 21:38:43,182 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 21:38:43,258 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0
[2023-12-25 21:38:43,401 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 21:38:43,402 INFO  L420      AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 21:38:43,403 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 21:38:43,403 INFO  L85        PathProgramCache]: Analyzing trace with hash -975799411, now seen corresponding path program 1 times
[2023-12-25 21:38:43,404 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 21:38:43,404 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1592248293]
[2023-12-25 21:38:43,404 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 21:38:43,404 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 21:38:44,030 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 21:38:44,030 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1747397342]
[2023-12-25 21:38:44,031 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 21:38:44,031 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 21:38:44,032 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 21:38:44,034 INFO  L229       MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-25 21:38:44,035 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process
[2023-12-25 21:38:50,843 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 21:38:51,042 INFO  L262         TraceCheckSpWp]: Trace formula consists of 28616 conjuncts, 17 conjunts are in the unsatisfiable core
[2023-12-25 21:38:51,122 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 21:38:52,208 INFO  L134       CoverageAnalysis]: Checked inductivity of 754 backedges. 48 proven. 685 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked.
[2023-12-25 21:38:52,209 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-12-25 21:38:52,360 INFO  L134       CoverageAnalysis]: Checked inductivity of 754 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 706 trivial. 0 not checked.
[2023-12-25 21:38:52,360 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 21:38:52,360 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1592248293]
[2023-12-25 21:38:52,360 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 21:38:52,361 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1747397342]
[2023-12-25 21:38:52,361 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1747397342] provided 1 perfect and 1 imperfect interpolant sequences
[2023-12-25 21:38:52,361 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2023-12-25 21:38:52,362 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10
[2023-12-25 21:38:52,362 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1937838347]
[2023-12-25 21:38:52,362 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 21:38:52,366 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-12-25 21:38:52,366 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 21:38:52,369 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-12-25 21:38:52,369 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90
[2023-12-25 21:38:52,371 INFO  L87              Difference]: Start difference. First operand 9763 states and 16241 transitions. Second operand  has 5 states, 5 states have (on average 1154.2) internal successors, (5771), 5 states have internal predecessors, (5771), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 21:38:59,694 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 21:38:59,694 INFO  L93              Difference]: Finished difference Result 33849 states and 56038 transitions.
[2023-12-25 21:38:59,694 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2023-12-25 21:38:59,695 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 1154.2) internal successors, (5771), 5 states have internal predecessors, (5771), 0 states have call successors, (0), 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 6476
[2023-12-25 21:38:59,700 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 21:38:59,716 INFO  L225             Difference]: With dead ends: 33849
[2023-12-25 21:38:59,717 INFO  L226             Difference]: Without dead ends: 17988
[2023-12-25 21:38:59,728 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 12951 GetRequests, 12942 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 21:38:59,729 INFO  L413           NwaCegarLoop]: 23520 mSDtfsCounter, 36356 mSDsluCounter, 22567 mSDsCounter, 0 mSdLazyCounter, 11745 mSolverCounterSat, 779 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36356 SdHoareTripleChecker+Valid, 46087 SdHoareTripleChecker+Invalid, 12524 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 779 IncrementalHoareTripleChecker+Valid, 11745 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.9s IncrementalHoareTripleChecker+Time
[2023-12-25 21:38:59,729 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [36356 Valid, 46087 Invalid, 12524 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [779 Valid, 11745 Invalid, 0 Unknown, 0 Unchecked, 6.9s Time]
[2023-12-25 21:38:59,744 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 17988 states.
[2023-12-25 21:38:59,851 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 17988 to 9765.
[2023-12-25 21:38:59,862 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 9765 states, 9764 states have (on average 1.6635600163867268) internal successors, (16243), 9764 states have internal predecessors, (16243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 21:38:59,873 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 9765 states to 9765 states and 16243 transitions.
[2023-12-25 21:38:59,874 INFO  L78                 Accepts]: Start accepts. Automaton has 9765 states and 16243 transitions. Word has length 6476
[2023-12-25 21:38:59,877 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 21:38:59,877 INFO  L495      AbstractCegarLoop]: Abstraction has 9765 states and 16243 transitions.
[2023-12-25 21:38:59,878 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 1154.2) internal successors, (5771), 5 states have internal predecessors, (5771), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 21:38:59,878 INFO  L276                IsEmpty]: Start isEmpty. Operand 9765 states and 16243 transitions.
[2023-12-25 21:39:00,144 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 6478
[2023-12-25 21:39:00,144 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 21:39:00,146 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 21:39:00,232 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0
[2023-12-25 21:39:00,372 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,SelfDestructingSolverStorable26
[2023-12-25 21:39:00,372 INFO  L420      AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 21:39:00,373 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 21:39:00,374 INFO  L85        PathProgramCache]: Analyzing trace with hash 1940948601, now seen corresponding path program 1 times
[2023-12-25 21:39:00,374 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 21:39:00,374 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [671737393]
[2023-12-25 21:39:00,375 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 21:39:00,375 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 21:39:00,985 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 21:39:00,986 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1647188854]
[2023-12-25 21:39:00,987 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 21:39:00,987 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 21:39:00,987 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 21:39:00,988 INFO  L229       MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-25 21:39:01,012 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process
[2023-12-25 21:39:07,986 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 21:39:08,163 INFO  L262         TraceCheckSpWp]: Trace formula consists of 28619 conjuncts, 17 conjunts are in the unsatisfiable core
[2023-12-25 21:39:08,227 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 21:39:08,841 INFO  L134       CoverageAnalysis]: Checked inductivity of 754 backedges. 50 proven. 685 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked.
[2023-12-25 21:39:08,841 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-12-25 21:39:08,957 INFO  L134       CoverageAnalysis]: Checked inductivity of 754 backedges. 50 proven. 0 refuted. 0 times theorem prover too weak. 704 trivial. 0 not checked.
[2023-12-25 21:39:08,958 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 21:39:08,958 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [671737393]
[2023-12-25 21:39:08,958 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 21:39:08,958 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1647188854]
[2023-12-25 21:39:08,958 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1647188854] provided 1 perfect and 1 imperfect interpolant sequences
[2023-12-25 21:39:08,958 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2023-12-25 21:39:08,959 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10
[2023-12-25 21:39:08,959 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1459447092]
[2023-12-25 21:39:08,959 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 21:39:08,962 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-12-25 21:39:08,962 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 21:39:08,964 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-12-25 21:39:08,964 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90
[2023-12-25 21:39:08,965 INFO  L87              Difference]: Start difference. First operand 9765 states and 16243 transitions. Second operand  has 5 states, 5 states have (on average 1154.8) internal successors, (5774), 5 states have internal predecessors, (5774), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 21:39:16,719 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 21:39:16,720 INFO  L93              Difference]: Finished difference Result 33857 states and 56046 transitions.
[2023-12-25 21:39:16,720 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2023-12-25 21:39:16,721 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 1154.8) internal successors, (5774), 5 states have internal predecessors, (5774), 0 states have call successors, (0), 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 6477
[2023-12-25 21:39:16,725 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 21:39:16,738 INFO  L225             Difference]: With dead ends: 33857
[2023-12-25 21:39:16,738 INFO  L226             Difference]: Without dead ends: 17989
[2023-12-25 21:39:16,747 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 12953 GetRequests, 12944 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 21:39:16,747 INFO  L413           NwaCegarLoop]: 23512 mSDtfsCounter, 25019 mSDsluCounter, 33109 mSDsCounter, 0 mSdLazyCounter, 14865 mSolverCounterSat, 779 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25019 SdHoareTripleChecker+Valid, 56621 SdHoareTripleChecker+Invalid, 15644 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 779 IncrementalHoareTripleChecker+Valid, 14865 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.3s IncrementalHoareTripleChecker+Time
[2023-12-25 21:39:16,748 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [25019 Valid, 56621 Invalid, 15644 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [779 Valid, 14865 Invalid, 0 Unknown, 0 Unchecked, 7.3s Time]
[2023-12-25 21:39:16,760 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 17989 states.
[2023-12-25 21:39:16,844 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 17989 to 9767.
[2023-12-25 21:39:16,853 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 9767 states, 9766 states have (on average 1.6634241245136188) internal successors, (16245), 9766 states have internal predecessors, (16245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 21:39:16,863 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 9767 states to 9767 states and 16245 transitions.
[2023-12-25 21:39:16,863 INFO  L78                 Accepts]: Start accepts. Automaton has 9767 states and 16245 transitions. Word has length 6477
[2023-12-25 21:39:16,866 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 21:39:16,866 INFO  L495      AbstractCegarLoop]: Abstraction has 9767 states and 16245 transitions.
[2023-12-25 21:39:16,867 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 1154.8) internal successors, (5774), 5 states have internal predecessors, (5774), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 21:39:16,867 INFO  L276                IsEmpty]: Start isEmpty. Operand 9767 states and 16245 transitions.
[2023-12-25 21:39:17,104 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 6479
[2023-12-25 21:39:17,104 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 21:39:17,106 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 21:39:17,190 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 21:39:17,308 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,SelfDestructingSolverStorable27
[2023-12-25 21:39:17,308 INFO  L420      AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 21:39:17,309 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 21:39:17,309 INFO  L85        PathProgramCache]: Analyzing trace with hash -205755085, now seen corresponding path program 1 times
[2023-12-25 21:39:17,309 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 21:39:17,309 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1733977285]
[2023-12-25 21:39:17,310 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 21:39:17,310 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 21:39:18,051 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 21:39:18,051 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1606875392]
[2023-12-25 21:39:18,052 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 21:39:18,052 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 21:39:18,053 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 21:39:18,053 INFO  L229       MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-25 21:39:18,055 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 21:39:25,271 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 21:39:25,480 INFO  L262         TraceCheckSpWp]: Trace formula consists of 28622 conjuncts, 17 conjunts are in the unsatisfiable core
[2023-12-25 21:39:25,540 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 21:39:26,348 INFO  L134       CoverageAnalysis]: Checked inductivity of 754 backedges. 52 proven. 685 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked.
[2023-12-25 21:39:26,348 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-12-25 21:39:26,474 INFO  L134       CoverageAnalysis]: Checked inductivity of 754 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 702 trivial. 0 not checked.
[2023-12-25 21:39:26,475 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 21:39:26,475 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1733977285]
[2023-12-25 21:39:26,475 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 21:39:26,475 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1606875392]
[2023-12-25 21:39:26,475 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1606875392] provided 1 perfect and 1 imperfect interpolant sequences
[2023-12-25 21:39:26,476 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2023-12-25 21:39:26,476 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10
[2023-12-25 21:39:26,477 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2119627173]
[2023-12-25 21:39:26,477 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 21:39:26,480 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-12-25 21:39:26,480 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 21:39:26,483 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-12-25 21:39:26,483 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90
[2023-12-25 21:39:26,484 INFO  L87              Difference]: Start difference. First operand 9767 states and 16245 transitions. Second operand  has 5 states, 5 states have (on average 1155.4) internal successors, (5777), 5 states have internal predecessors, (5777), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 21:39:33,326 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 21:39:33,326 INFO  L93              Difference]: Finished difference Result 33865 states and 56054 transitions.
[2023-12-25 21:39:33,326 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2023-12-25 21:39:33,327 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 1155.4) internal successors, (5777), 5 states have internal predecessors, (5777), 0 states have call successors, (0), 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 6478
[2023-12-25 21:39:33,331 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 21:39:33,342 INFO  L225             Difference]: With dead ends: 33865
[2023-12-25 21:39:33,343 INFO  L226             Difference]: Without dead ends: 17990
[2023-12-25 21:39:33,349 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 12955 GetRequests, 12946 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 21:39:33,349 INFO  L413           NwaCegarLoop]: 23504 mSDtfsCounter, 36316 mSDsluCounter, 22558 mSDsCounter, 0 mSdLazyCounter, 11745 mSolverCounterSat, 779 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36316 SdHoareTripleChecker+Valid, 46062 SdHoareTripleChecker+Invalid, 12524 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 779 IncrementalHoareTripleChecker+Valid, 11745 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.4s IncrementalHoareTripleChecker+Time
[2023-12-25 21:39:33,349 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [36316 Valid, 46062 Invalid, 12524 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [779 Valid, 11745 Invalid, 0 Unknown, 0 Unchecked, 6.4s Time]
[2023-12-25 21:39:33,361 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 17990 states.
[2023-12-25 21:39:33,446 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 17990 to 9769.
[2023-12-25 21:39:33,454 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 9769 states, 9768 states have (on average 1.6632882882882882) internal successors, (16247), 9768 states have internal predecessors, (16247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 21:39:33,464 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 9769 states to 9769 states and 16247 transitions.
[2023-12-25 21:39:33,464 INFO  L78                 Accepts]: Start accepts. Automaton has 9769 states and 16247 transitions. Word has length 6478
[2023-12-25 21:39:33,467 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 21:39:33,467 INFO  L495      AbstractCegarLoop]: Abstraction has 9769 states and 16247 transitions.
[2023-12-25 21:39:33,468 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 1155.4) internal successors, (5777), 5 states have internal predecessors, (5777), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 21:39:33,468 INFO  L276                IsEmpty]: Start isEmpty. Operand 9769 states and 16247 transitions.
[2023-12-25 21:39:33,716 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 6480
[2023-12-25 21:39:33,716 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 21:39:33,718 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 21:39:33,798 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0
[2023-12-25 21:39:33,942 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28
[2023-12-25 21:39:33,943 INFO  L420      AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 21:39:33,943 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 21:39:33,944 INFO  L85        PathProgramCache]: Analyzing trace with hash -1822322733, now seen corresponding path program 1 times
[2023-12-25 21:39:33,944 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 21:39:33,944 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1284480325]
[2023-12-25 21:39:33,944 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 21:39:33,944 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 21:39:34,619 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 21:39:34,619 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1907589011]
[2023-12-25 21:39:34,620 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 21:39:34,620 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 21:39:34,620 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 21:39:34,622 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 21:39:34,623 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 21:39:41,521 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 21:39:41,708 INFO  L262         TraceCheckSpWp]: Trace formula consists of 28625 conjuncts, 17 conjunts are in the unsatisfiable core
[2023-12-25 21:39:41,778 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 21:39:42,357 INFO  L134       CoverageAnalysis]: Checked inductivity of 754 backedges. 54 proven. 685 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked.
[2023-12-25 21:39:42,358 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-12-25 21:39:42,571 INFO  L134       CoverageAnalysis]: Checked inductivity of 754 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 700 trivial. 0 not checked.
[2023-12-25 21:39:42,571 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 21:39:42,572 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1284480325]
[2023-12-25 21:39:42,572 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 21:39:42,572 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1907589011]
[2023-12-25 21:39:42,572 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1907589011] provided 1 perfect and 1 imperfect interpolant sequences
[2023-12-25 21:39:42,572 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2023-12-25 21:39:42,573 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10
[2023-12-25 21:39:42,573 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1544197327]
[2023-12-25 21:39:42,573 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 21:39:42,576 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-12-25 21:39:42,576 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 21:39:42,578 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-12-25 21:39:42,578 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90
[2023-12-25 21:39:42,578 INFO  L87              Difference]: Start difference. First operand 9769 states and 16247 transitions. Second operand  has 5 states, 5 states have (on average 1156.0) internal successors, (5780), 5 states have internal predecessors, (5780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 21:39:51,143 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 21:39:51,144 INFO  L93              Difference]: Finished difference Result 33873 states and 56062 transitions.
[2023-12-25 21:39:51,144 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2023-12-25 21:39:51,145 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 1156.0) internal successors, (5780), 5 states have internal predecessors, (5780), 0 states have call successors, (0), 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 6479
[2023-12-25 21:39:51,149 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 21:39:51,163 INFO  L225             Difference]: With dead ends: 33873
[2023-12-25 21:39:51,163 INFO  L226             Difference]: Without dead ends: 17991
[2023-12-25 21:39:51,172 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 12957 GetRequests, 12948 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 21:39:51,173 INFO  L413           NwaCegarLoop]: 23496 mSDtfsCounter, 24984 mSDsluCounter, 34248 mSDsCounter, 0 mSdLazyCounter, 16121 mSolverCounterSat, 779 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24984 SdHoareTripleChecker+Valid, 57744 SdHoareTripleChecker+Invalid, 16900 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 779 IncrementalHoareTripleChecker+Valid, 16121 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.1s IncrementalHoareTripleChecker+Time
[2023-12-25 21:39:51,173 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [24984 Valid, 57744 Invalid, 16900 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [779 Valid, 16121 Invalid, 0 Unknown, 0 Unchecked, 8.1s Time]
[2023-12-25 21:39:51,185 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 17991 states.
[2023-12-25 21:39:51,268 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 17991 to 9771.
[2023-12-25 21:39:51,276 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 9771 states, 9770 states have (on average 1.663152507676561) internal successors, (16249), 9770 states have internal predecessors, (16249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 21:39:51,284 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 9771 states to 9771 states and 16249 transitions.
[2023-12-25 21:39:51,285 INFO  L78                 Accepts]: Start accepts. Automaton has 9771 states and 16249 transitions. Word has length 6479
[2023-12-25 21:39:51,287 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 21:39:51,287 INFO  L495      AbstractCegarLoop]: Abstraction has 9771 states and 16249 transitions.
[2023-12-25 21:39:51,288 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 1156.0) internal successors, (5780), 5 states have internal predecessors, (5780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 21:39:51,288 INFO  L276                IsEmpty]: Start isEmpty. Operand 9771 states and 16249 transitions.
[2023-12-25 21:39:51,533 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 6481
[2023-12-25 21:39:51,534 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 21:39:51,535 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 21:39:51,612 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Ended with exit code 0
[2023-12-25 21:39:51,756 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 21:39:51,756 INFO  L420      AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 21:39:51,757 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 21:39:51,758 INFO  L85        PathProgramCache]: Analyzing trace with hash 567670039, now seen corresponding path program 1 times
[2023-12-25 21:39:51,758 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 21:39:51,758 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1797200948]
[2023-12-25 21:39:51,758 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 21:39:51,758 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 21:39:52,329 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 21:39:52,329 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1885778962]
[2023-12-25 21:39:52,331 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 21:39:52,331 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 21:39:52,331 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 21:39:52,332 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 21:39:52,334 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 21:39:58,850 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 21:39:59,029 INFO  L262         TraceCheckSpWp]: Trace formula consists of 28629 conjuncts, 17 conjunts are in the unsatisfiable core
[2023-12-25 21:39:59,292 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 21:40:00,045 INFO  L134       CoverageAnalysis]: Checked inductivity of 754 backedges. 56 proven. 685 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked.
[2023-12-25 21:40:00,045 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-12-25 21:40:00,188 INFO  L134       CoverageAnalysis]: Checked inductivity of 754 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 698 trivial. 0 not checked.
[2023-12-25 21:40:00,188 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 21:40:00,188 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1797200948]
[2023-12-25 21:40:00,188 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 21:40:00,188 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1885778962]
[2023-12-25 21:40:00,189 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1885778962] provided 1 perfect and 1 imperfect interpolant sequences
[2023-12-25 21:40:00,189 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2023-12-25 21:40:00,189 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10
[2023-12-25 21:40:00,190 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [965709040]
[2023-12-25 21:40:00,190 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 21:40:00,192 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-12-25 21:40:00,192 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 21:40:00,194 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-12-25 21:40:00,194 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90
[2023-12-25 21:40:00,195 INFO  L87              Difference]: Start difference. First operand 9771 states and 16249 transitions. Second operand  has 5 states, 5 states have (on average 1156.6) internal successors, (5783), 5 states have internal predecessors, (5783), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 21:40:08,356 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 21:40:08,356 INFO  L93              Difference]: Finished difference Result 33881 states and 56070 transitions.
[2023-12-25 21:40:08,356 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2023-12-25 21:40:08,357 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 1156.6) internal successors, (5783), 5 states have internal predecessors, (5783), 0 states have call successors, (0), 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 6480
[2023-12-25 21:40:08,362 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 21:40:08,477 INFO  L225             Difference]: With dead ends: 33881
[2023-12-25 21:40:08,477 INFO  L226             Difference]: Without dead ends: 17992
[2023-12-25 21:40:08,483 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 12959 GetRequests, 12950 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 21:40:08,493 INFO  L413           NwaCegarLoop]: 23488 mSDtfsCounter, 25004 mSDsluCounter, 33085 mSDsCounter, 0 mSdLazyCounter, 14865 mSolverCounterSat, 779 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25004 SdHoareTripleChecker+Valid, 56573 SdHoareTripleChecker+Invalid, 15644 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 779 IncrementalHoareTripleChecker+Valid, 14865 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.8s IncrementalHoareTripleChecker+Time
[2023-12-25 21:40:08,493 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [25004 Valid, 56573 Invalid, 15644 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [779 Valid, 14865 Invalid, 0 Unknown, 0 Unchecked, 7.8s Time]
[2023-12-25 21:40:08,503 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 17992 states.
[2023-12-25 21:40:08,571 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 17992 to 9773.
[2023-12-25 21:40:08,578 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 9773 states, 9772 states have (on average 1.6630167826442899) internal successors, (16251), 9772 states have internal predecessors, (16251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 21:40:08,586 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 9773 states to 9773 states and 16251 transitions.
[2023-12-25 21:40:08,587 INFO  L78                 Accepts]: Start accepts. Automaton has 9773 states and 16251 transitions. Word has length 6480
[2023-12-25 21:40:08,589 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 21:40:08,589 INFO  L495      AbstractCegarLoop]: Abstraction has 9773 states and 16251 transitions.
[2023-12-25 21:40:08,590 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 1156.6) internal successors, (5783), 5 states have internal predecessors, (5783), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 21:40:08,590 INFO  L276                IsEmpty]: Start isEmpty. Operand 9773 states and 16251 transitions.
[2023-12-25 21:40:08,789 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 6482
[2023-12-25 21:40:08,789 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 21:40:08,791 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-12-25 21:40:08,875 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 21:40:09,004 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 21:40:09,004 INFO  L420      AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 21:40:09,005 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 21:40:09,005 INFO  L85        PathProgramCache]: Analyzing trace with hash 287259499, now seen corresponding path program 1 times
[2023-12-25 21:40:09,005 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 21:40:09,005 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1702181991]
[2023-12-25 21:40:09,006 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 21:40:09,006 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 21:40:09,608 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 21:40:09,608 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1773101099]
[2023-12-25 21:40:09,610 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 21:40:09,610 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 21:40:09,610 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 21:40:09,612 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 21:40:09,613 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 21:40:16,362 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 21:40:16,536 INFO  L262         TraceCheckSpWp]: Trace formula consists of 28632 conjuncts, 17 conjunts are in the unsatisfiable core
[2023-12-25 21:40:16,604 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 21:40:17,512 INFO  L134       CoverageAnalysis]: Checked inductivity of 754 backedges. 58 proven. 685 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked.
[2023-12-25 21:40:17,513 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-12-25 21:40:17,678 INFO  L134       CoverageAnalysis]: Checked inductivity of 754 backedges. 58 proven. 0 refuted. 0 times theorem prover too weak. 696 trivial. 0 not checked.
[2023-12-25 21:40:17,679 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 21:40:17,679 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1702181991]
[2023-12-25 21:40:17,679 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 21:40:17,679 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1773101099]
[2023-12-25 21:40:17,679 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1773101099] provided 1 perfect and 1 imperfect interpolant sequences
[2023-12-25 21:40:17,679 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2023-12-25 21:40:17,680 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10
[2023-12-25 21:40:17,680 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1580461711]
[2023-12-25 21:40:17,680 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 21:40:17,682 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-12-25 21:40:17,682 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 21:40:17,685 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-12-25 21:40:17,685 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90
[2023-12-25 21:40:17,685 INFO  L87              Difference]: Start difference. First operand 9773 states and 16251 transitions. Second operand  has 5 states, 5 states have (on average 1157.2) internal successors, (5786), 5 states have internal predecessors, (5786), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 21:40:27,195 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 21:40:27,195 INFO  L93              Difference]: Finished difference Result 33889 states and 56078 transitions.
[2023-12-25 21:40:27,195 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2023-12-25 21:40:27,196 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 1157.2) internal successors, (5786), 5 states have internal predecessors, (5786), 0 states have call successors, (0), 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 6481
[2023-12-25 21:40:27,200 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 21:40:27,211 INFO  L225             Difference]: With dead ends: 33889
[2023-12-25 21:40:27,212 INFO  L226             Difference]: Without dead ends: 17993
[2023-12-25 21:40:27,218 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 12961 GetRequests, 12952 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 21:40:27,218 INFO  L413           NwaCegarLoop]: 23480 mSDtfsCounter, 24972 mSDsluCounter, 34228 mSDsCounter, 0 mSdLazyCounter, 16121 mSolverCounterSat, 779 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24972 SdHoareTripleChecker+Valid, 57708 SdHoareTripleChecker+Invalid, 16900 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 779 IncrementalHoareTripleChecker+Valid, 16121 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.0s IncrementalHoareTripleChecker+Time
[2023-12-25 21:40:27,218 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [24972 Valid, 57708 Invalid, 16900 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [779 Valid, 16121 Invalid, 0 Unknown, 0 Unchecked, 9.0s Time]
[2023-12-25 21:40:27,229 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 17993 states.
[2023-12-25 21:40:27,304 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 17993 to 9775.
[2023-12-25 21:40:27,312 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 9775 states, 9774 states have (on average 1.6628811131573562) internal successors, (16253), 9774 states have internal predecessors, (16253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 21:40:27,321 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 9775 states to 9775 states and 16253 transitions.
[2023-12-25 21:40:27,321 INFO  L78                 Accepts]: Start accepts. Automaton has 9775 states and 16253 transitions. Word has length 6481
[2023-12-25 21:40:27,324 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 21:40:27,324 INFO  L495      AbstractCegarLoop]: Abstraction has 9775 states and 16253 transitions.
[2023-12-25 21:40:27,325 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 1157.2) internal successors, (5786), 5 states have internal predecessors, (5786), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 21:40:27,325 INFO  L276                IsEmpty]: Start isEmpty. Operand 9775 states and 16253 transitions.
[2023-12-25 21:40:27,611 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 6483
[2023-12-25 21:40:27,612 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 21:40:27,613 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 21:40:27,696 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 21:40:27,813 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 21:40:27,814 INFO  L420      AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 21:40:27,814 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 21:40:27,815 INFO  L85        PathProgramCache]: Analyzing trace with hash -824685891, now seen corresponding path program 1 times
[2023-12-25 21:40:27,815 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 21:40:27,815 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [169842972]
[2023-12-25 21:40:27,815 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 21:40:27,816 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 21:40:28,496 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 21:40:28,496 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1281876694]
[2023-12-25 21:40:28,498 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 21:40:28,498 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 21:40:28,498 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 21:40:28,499 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 21:40:28,500 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 21:40:35,654 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 21:40:35,861 INFO  L262         TraceCheckSpWp]: Trace formula consists of 28635 conjuncts, 17 conjunts are in the unsatisfiable core
[2023-12-25 21:40:35,934 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 21:40:36,965 INFO  L134       CoverageAnalysis]: Checked inductivity of 754 backedges. 60 proven. 685 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked.
[2023-12-25 21:40:36,965 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-12-25 21:40:37,135 INFO  L134       CoverageAnalysis]: Checked inductivity of 754 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 694 trivial. 0 not checked.
[2023-12-25 21:40:37,136 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 21:40:37,136 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [169842972]
[2023-12-25 21:40:37,136 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 21:40:37,137 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1281876694]
[2023-12-25 21:40:37,137 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1281876694] provided 1 perfect and 1 imperfect interpolant sequences
[2023-12-25 21:40:37,137 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2023-12-25 21:40:37,138 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10
[2023-12-25 21:40:37,138 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [728267350]
[2023-12-25 21:40:37,138 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 21:40:37,141 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-12-25 21:40:37,141 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 21:40:37,143 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-12-25 21:40:37,143 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90
[2023-12-25 21:40:37,144 INFO  L87              Difference]: Start difference. First operand 9775 states and 16253 transitions. Second operand  has 5 states, 5 states have (on average 1157.8) internal successors, (5789), 5 states have internal predecessors, (5789), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 21:40:45,697 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 21:40:45,697 INFO  L93              Difference]: Finished difference Result 33897 states and 56086 transitions.
[2023-12-25 21:40:45,697 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2023-12-25 21:40:45,699 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 1157.8) internal successors, (5789), 5 states have internal predecessors, (5789), 0 states have call successors, (0), 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 6482
[2023-12-25 21:40:45,702 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 21:40:45,714 INFO  L225             Difference]: With dead ends: 33897
[2023-12-25 21:40:45,714 INFO  L226             Difference]: Without dead ends: 17994
[2023-12-25 21:40:45,721 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 12963 GetRequests, 12954 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 21:40:45,721 INFO  L413           NwaCegarLoop]: 23472 mSDtfsCounter, 24994 mSDsluCounter, 33069 mSDsCounter, 0 mSdLazyCounter, 14865 mSolverCounterSat, 779 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24994 SdHoareTripleChecker+Valid, 56541 SdHoareTripleChecker+Invalid, 15644 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 779 IncrementalHoareTripleChecker+Valid, 14865 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.1s IncrementalHoareTripleChecker+Time
[2023-12-25 21:40:45,722 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [24994 Valid, 56541 Invalid, 15644 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [779 Valid, 14865 Invalid, 0 Unknown, 0 Unchecked, 8.1s Time]
[2023-12-25 21:40:45,734 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 17994 states.
[2023-12-25 21:40:45,809 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 17994 to 9777.
[2023-12-25 21:40:45,818 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 9777 states, 9776 states have (on average 1.6627454991816695) internal successors, (16255), 9776 states have internal predecessors, (16255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 21:40:45,827 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 9777 states to 9777 states and 16255 transitions.
[2023-12-25 21:40:45,827 INFO  L78                 Accepts]: Start accepts. Automaton has 9777 states and 16255 transitions. Word has length 6482
[2023-12-25 21:40:45,830 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 21:40:45,830 INFO  L495      AbstractCegarLoop]: Abstraction has 9777 states and 16255 transitions.
[2023-12-25 21:40:45,831 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 1157.8) internal successors, (5789), 5 states have internal predecessors, (5789), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 21:40:45,831 INFO  L276                IsEmpty]: Start isEmpty. Operand 9777 states and 16255 transitions.
[2023-12-25 21:40:46,067 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 6484
[2023-12-25 21:40:46,068 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 21:40:46,069 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 21:40:46,145 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0
[2023-12-25 21:40:46,284 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,SelfDestructingSolverStorable32
[2023-12-25 21:40:46,284 INFO  L420      AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 21:40:46,285 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 21:40:46,285 INFO  L85        PathProgramCache]: Analyzing trace with hash 151584965, now seen corresponding path program 1 times
[2023-12-25 21:40:46,285 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 21:40:46,286 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [843679331]
[2023-12-25 21:40:46,286 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 21:40:46,286 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 21:40:46,901 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 21:40:46,901 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2025477515]
[2023-12-25 21:40:46,902 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 21:40:46,902 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 21:40:46,903 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 21:40:46,904 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 21:40:46,905 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 21:40:53,527 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 21:40:53,703 INFO  L262         TraceCheckSpWp]: Trace formula consists of 28638 conjuncts, 17 conjunts are in the unsatisfiable core
[2023-12-25 21:40:53,765 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 21:40:54,707 INFO  L134       CoverageAnalysis]: Checked inductivity of 754 backedges. 62 proven. 685 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked.
[2023-12-25 21:40:54,708 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-12-25 21:40:54,869 INFO  L134       CoverageAnalysis]: Checked inductivity of 754 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 692 trivial. 0 not checked.
[2023-12-25 21:40:54,869 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 21:40:54,869 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [843679331]
[2023-12-25 21:40:54,870 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 21:40:54,870 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2025477515]
[2023-12-25 21:40:54,870 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [2025477515] provided 1 perfect and 1 imperfect interpolant sequences
[2023-12-25 21:40:54,870 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2023-12-25 21:40:54,871 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10
[2023-12-25 21:40:54,871 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2045226770]
[2023-12-25 21:40:54,871 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 21:40:54,873 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-12-25 21:40:54,873 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 21:40:54,875 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-12-25 21:40:54,875 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90
[2023-12-25 21:40:54,876 INFO  L87              Difference]: Start difference. First operand 9777 states and 16255 transitions. Second operand  has 5 states, 5 states have (on average 1158.4) internal successors, (5792), 5 states have internal predecessors, (5792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 21:41:03,747 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 21:41:03,748 INFO  L93              Difference]: Finished difference Result 33905 states and 56094 transitions.
[2023-12-25 21:41:03,748 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2023-12-25 21:41:03,749 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 1158.4) internal successors, (5792), 5 states have internal predecessors, (5792), 0 states have call successors, (0), 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 6483
[2023-12-25 21:41:03,753 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 21:41:03,767 INFO  L225             Difference]: With dead ends: 33905
[2023-12-25 21:41:03,767 INFO  L226             Difference]: Without dead ends: 17995
[2023-12-25 21:41:03,775 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 12965 GetRequests, 12956 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 21:41:03,776 INFO  L413           NwaCegarLoop]: 23464 mSDtfsCounter, 36271 mSDsluCounter, 22533 mSDsCounter, 0 mSdLazyCounter, 11745 mSolverCounterSat, 779 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36271 SdHoareTripleChecker+Valid, 45997 SdHoareTripleChecker+Invalid, 12524 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 779 IncrementalHoareTripleChecker+Valid, 11745 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.5s IncrementalHoareTripleChecker+Time
[2023-12-25 21:41:03,776 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [36271 Valid, 45997 Invalid, 12524 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [779 Valid, 11745 Invalid, 0 Unknown, 0 Unchecked, 8.5s Time]
[2023-12-25 21:41:03,788 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 17995 states.
[2023-12-25 21:41:03,872 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 17995 to 9779.
[2023-12-25 21:41:03,881 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 9779 states, 9778 states have (on average 1.6626099406831663) internal successors, (16257), 9778 states have internal predecessors, (16257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 21:41:03,890 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 9779 states to 9779 states and 16257 transitions.
[2023-12-25 21:41:03,890 INFO  L78                 Accepts]: Start accepts. Automaton has 9779 states and 16257 transitions. Word has length 6483
[2023-12-25 21:41:03,893 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 21:41:03,893 INFO  L495      AbstractCegarLoop]: Abstraction has 9779 states and 16257 transitions.
[2023-12-25 21:41:03,894 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 1158.4) internal successors, (5792), 5 states have internal predecessors, (5792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 21:41:03,894 INFO  L276                IsEmpty]: Start isEmpty. Operand 9779 states and 16257 transitions.
[2023-12-25 21:41:04,153 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 6485
[2023-12-25 21:41:04,153 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 21:41:04,154 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 21:41:04,241 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 21:41:04,368 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,32 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 21:41:04,369 INFO  L420      AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 21:41:04,369 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 21:41:04,370 INFO  L85        PathProgramCache]: Analyzing trace with hash 1306626465, now seen corresponding path program 1 times
[2023-12-25 21:41:04,370 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 21:41:04,370 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [961790761]
[2023-12-25 21:41:04,370 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 21:41:04,370 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 21:41:04,993 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 21:41:04,993 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [511919295]
[2023-12-25 21:41:04,994 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 21:41:04,995 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 21:41:04,995 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 21:41:04,996 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 21:41:04,997 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 21:41:12,059 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 21:41:12,238 INFO  L262         TraceCheckSpWp]: Trace formula consists of 28642 conjuncts, 17 conjunts are in the unsatisfiable core
[2023-12-25 21:41:12,302 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 21:41:12,972 INFO  L134       CoverageAnalysis]: Checked inductivity of 754 backedges. 64 proven. 685 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked.
[2023-12-25 21:41:12,972 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-12-25 21:41:13,107 INFO  L134       CoverageAnalysis]: Checked inductivity of 754 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 690 trivial. 0 not checked.
[2023-12-25 21:41:13,107 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 21:41:13,107 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [961790761]
[2023-12-25 21:41:13,107 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 21:41:13,107 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [511919295]
[2023-12-25 21:41:13,107 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [511919295] provided 1 perfect and 1 imperfect interpolant sequences
[2023-12-25 21:41:13,107 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2023-12-25 21:41:13,108 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10
[2023-12-25 21:41:13,108 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1113321383]
[2023-12-25 21:41:13,108 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 21:41:13,111 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-12-25 21:41:13,111 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 21:41:13,114 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-12-25 21:41:13,114 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90
[2023-12-25 21:41:13,115 INFO  L87              Difference]: Start difference. First operand 9779 states and 16257 transitions. Second operand  has 5 states, 5 states have (on average 1159.0) internal successors, (5795), 5 states have internal predecessors, (5795), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 21:41:20,773 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 21:41:20,774 INFO  L93              Difference]: Finished difference Result 33913 states and 56102 transitions.
[2023-12-25 21:41:20,774 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2023-12-25 21:41:20,775 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 1159.0) internal successors, (5795), 5 states have internal predecessors, (5795), 0 states have call successors, (0), 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 6484
[2023-12-25 21:41:20,779 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 21:41:20,793 INFO  L225             Difference]: With dead ends: 33913
[2023-12-25 21:41:20,793 INFO  L226             Difference]: Without dead ends: 17996
[2023-12-25 21:41:20,803 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 12967 GetRequests, 12958 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 21:41:20,803 INFO  L413           NwaCegarLoop]: 23456 mSDtfsCounter, 36262 mSDsluCounter, 22528 mSDsCounter, 0 mSdLazyCounter, 11745 mSolverCounterSat, 779 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36262 SdHoareTripleChecker+Valid, 45984 SdHoareTripleChecker+Invalid, 12524 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 779 IncrementalHoareTripleChecker+Valid, 11745 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.2s IncrementalHoareTripleChecker+Time
[2023-12-25 21:41:20,804 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [36262 Valid, 45984 Invalid, 12524 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [779 Valid, 11745 Invalid, 0 Unknown, 0 Unchecked, 7.2s Time]
[2023-12-25 21:41:20,817 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 17996 states.
[2023-12-25 21:41:20,903 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 17996 to 9781.
[2023-12-25 21:41:20,912 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 9781 states, 9780 states have (on average 1.6624744376278118) internal successors, (16259), 9780 states have internal predecessors, (16259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 21:41:20,924 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 9781 states to 9781 states and 16259 transitions.
[2023-12-25 21:41:20,924 INFO  L78                 Accepts]: Start accepts. Automaton has 9781 states and 16259 transitions. Word has length 6484
[2023-12-25 21:41:20,927 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 21:41:20,927 INFO  L495      AbstractCegarLoop]: Abstraction has 9781 states and 16259 transitions.
[2023-12-25 21:41:20,928 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 1159.0) internal successors, (5795), 5 states have internal predecessors, (5795), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 21:41:20,928 INFO  L276                IsEmpty]: Start isEmpty. Operand 9781 states and 16259 transitions.
[2023-12-25 21:41:21,171 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 6486
[2023-12-25 21:41:21,171 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 21:41:21,173 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 21:41:21,251 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Forceful destruction successful, exit code 0
[2023-12-25 21:41:21,396 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,33 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 21:41:21,397 INFO  L420      AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 21:41:21,398 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 21:41:21,398 INFO  L85        PathProgramCache]: Analyzing trace with hash -148423843, now seen corresponding path program 1 times
[2023-12-25 21:41:21,398 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 21:41:21,398 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1622604639]
[2023-12-25 21:41:21,399 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 21:41:21,399 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 21:41:22,011 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 21:41:22,011 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [103177867]
[2023-12-25 21:41:22,012 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 21:41:22,012 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 21:41:22,012 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 21:41:22,013 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 21:41:22,015 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 21:41:29,067 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 21:41:29,242 INFO  L262         TraceCheckSpWp]: Trace formula consists of 28645 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-12-25 21:41:29,408 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 21:41:30,263 INFO  L134       CoverageAnalysis]: Checked inductivity of 754 backedges. 66 proven. 685 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked.
[2023-12-25 21:41:30,263 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-12-25 21:41:30,514 INFO  L134       CoverageAnalysis]: Checked inductivity of 754 backedges. 66 proven. 0 refuted. 0 times theorem prover too weak. 688 trivial. 0 not checked.
[2023-12-25 21:41:30,514 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 21:41:30,514 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1622604639]
[2023-12-25 21:41:30,514 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 21:41:30,514 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [103177867]
[2023-12-25 21:41:30,514 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [103177867] provided 1 perfect and 1 imperfect interpolant sequences
[2023-12-25 21:41:30,514 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2023-12-25 21:41:30,515 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8] total 12
[2023-12-25 21:41:30,515 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [985847206]
[2023-12-25 21:41:30,515 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 21:41:30,518 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2023-12-25 21:41:30,518 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 21:41:30,520 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2023-12-25 21:41:30,520 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132
[2023-12-25 21:41:30,520 INFO  L87              Difference]: Start difference. First operand 9781 states and 16259 transitions. Second operand  has 6 states, 6 states have (on average 966.3333333333334) internal successors, (5798), 6 states have internal predecessors, (5798), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)