/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation true -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.telephony.7.prop1-back-serstep.c


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


This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m
[2023-12-25 22:43:04,889 INFO  L188        SettingsManager]: Resetting all preferences to default values...
[2023-12-25 22:43:04,957 INFO  L114        SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf
[2023-12-25 22:43:04,961 WARN  L101        SettingsManager]: Preference file contains the following unknown settings:
[2023-12-25 22:43:04,962 WARN  L103        SettingsManager]:   * de.uni_freiburg.informatik.ultimate.core.Log level for class
[2023-12-25 22:43:04,983 INFO  L130        SettingsManager]: Preferences different from defaults after loading the file:
[2023-12-25 22:43:04,983 INFO  L151        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2023-12-25 22:43:04,983 INFO  L153        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2023-12-25 22:43:04,984 INFO  L151        SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults:
[2023-12-25 22:43:04,986 INFO  L153        SettingsManager]:  * Use memory slicer=true
[2023-12-25 22:43:04,987 INFO  L151        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2023-12-25 22:43:04,987 INFO  L153        SettingsManager]:  * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2023-12-25 22:43:04,987 INFO  L151        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2023-12-25 22:43:04,988 INFO  L153        SettingsManager]:  * Create parallel compositions if possible=false
[2023-12-25 22:43:04,988 INFO  L153        SettingsManager]:  * Use SBE=true
[2023-12-25 22:43:04,989 INFO  L151        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2023-12-25 22:43:04,989 INFO  L153        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2023-12-25 22:43:04,989 INFO  L153        SettingsManager]:  * Overapproximate operations on floating types=true
[2023-12-25 22:43:04,989 INFO  L153        SettingsManager]:  * Check division by zero=IGNORE
[2023-12-25 22:43:04,989 INFO  L153        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2023-12-25 22:43:04,989 INFO  L153        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2023-12-25 22:43:04,990 INFO  L153        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2023-12-25 22:43:04,990 INFO  L153        SettingsManager]:  * Allow undefined functions=false
[2023-12-25 22:43:04,990 INFO  L153        SettingsManager]:  * Check if freed pointer was valid=false
[2023-12-25 22:43:04,990 INFO  L153        SettingsManager]:  * Use constant arrays=true
[2023-12-25 22:43:04,990 INFO  L151        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2023-12-25 22:43:04,991 INFO  L153        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2023-12-25 22:43:04,991 INFO  L153        SettingsManager]:  * Only consider context switches at boundaries of atomic blocks=true
[2023-12-25 22:43:04,991 INFO  L153        SettingsManager]:  * SMT solver=External_DefaultMode
[2023-12-25 22:43:04,991 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2023-12-25 22:43:04,992 INFO  L151        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2023-12-25 22:43:04,992 INFO  L153        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2023-12-25 22:43:04,992 INFO  L153        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopHeads
[2023-12-25 22:43:04,992 INFO  L153        SettingsManager]:  * Trace refinement strategy=CAMEL
[2023-12-25 22:43:04,992 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2023-12-25 22:43:04,992 INFO  L153        SettingsManager]:  * Apply one-shot large block encoding in concurrent analysis=false
[2023-12-25 22:43:04,992 INFO  L153        SettingsManager]:  * Automaton type used in concurrency analysis=PETRI_NET
[2023-12-25 22:43:04,992 INFO  L153        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2023-12-25 22:43:04,993 INFO  L153        SettingsManager]:  * Order on configurations for Petri net unfoldings=DBO
[2023-12-25 22:43:04,993 INFO  L153        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2023-12-25 22:43:04,993 INFO  L153        SettingsManager]:  * Looper check in Petri net analysis=SEMANTIC
WARNING: An illegal reflective access operation has occurred
WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int)
WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true
[2023-12-25 22:43:05,185 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2023-12-25 22:43:05,201 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2023-12-25 22:43:05,202 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2023-12-25 22:43:05,203 INFO  L270        PluginConnector]: Initializing CDTParser...
[2023-12-25 22:43:05,203 INFO  L274        PluginConnector]: CDTParser initialized
[2023-12-25 22:43:05,204 INFO  L431   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.telephony.7.prop1-back-serstep.c
[2023-12-25 22:43:06,233 INFO  L533              CDTParser]: Created temporary CDT project at NULL
[2023-12-25 22:43:06,528 INFO  L384              CDTParser]: Found 1 translation units.
[2023-12-25 22:43:06,528 INFO  L180              CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.telephony.7.prop1-back-serstep.c
[2023-12-25 22:43:06,557 INFO  L427              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/76edf1efe/1a7b075be1874585bbe309e6afb90436/FLAGf2b1f4a3e
[2023-12-25 22:43:06,569 INFO  L435              CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/76edf1efe/1a7b075be1874585bbe309e6afb90436
[2023-12-25 22:43:06,571 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2023-12-25 22:43:06,572 INFO  L133        ToolchainWalker]: Walking toolchain with 5 elements.
[2023-12-25 22:43:06,574 INFO  L112        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2023-12-25 22:43:06,574 INFO  L270        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2023-12-25 22:43:06,577 INFO  L274        PluginConnector]: CACSL2BoogieTranslator initialized
[2023-12-25 22:43:06,578 INFO  L184        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.12 10:43:06" (1/1) ...
[2023-12-25 22:43:06,578 INFO  L204        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2d2d99b9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 10:43:06, skipping insertion in model container
[2023-12-25 22:43:06,578 INFO  L184        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.12 10:43:06" (1/1) ...
[2023-12-25 22:43:06,654 INFO  L177         MainTranslator]: Built tables and reachable declarations
[2023-12-25 22:43:06,868 WARN  L239   ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.telephony.7.prop1-back-serstep.c[1177,1190]
[2023-12-25 22:43:07,472 INFO  L209          PostProcessor]: Analyzing one entry point: main
[2023-12-25 22:43:07,479 INFO  L202         MainTranslator]: Completed pre-run
[2023-12-25 22:43:07,487 WARN  L239   ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.telephony.7.prop1-back-serstep.c[1177,1190]
[2023-12-25 22:43:07,808 INFO  L209          PostProcessor]: Analyzing one entry point: main
[2023-12-25 22:43:07,818 INFO  L206         MainTranslator]: Completed translation
[2023-12-25 22:43:07,818 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 10:43:07 WrapperNode
[2023-12-25 22:43:07,818 INFO  L131        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2023-12-25 22:43:07,820 INFO  L112        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2023-12-25 22:43:07,820 INFO  L270        PluginConnector]: Initializing Boogie Procedure Inliner...
[2023-12-25 22:43:07,820 INFO  L274        PluginConnector]: Boogie Procedure Inliner initialized
[2023-12-25 22:43:07,824 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 10:43:07" (1/1) ...
[2023-12-25 22:43:08,012 INFO  L184        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 10:43:07" (1/1) ...
[2023-12-25 22:43:09,852 INFO  L138                Inliner]: procedures = 17, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 29812
[2023-12-25 22:43:09,853 INFO  L131        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2023-12-25 22:43:09,853 INFO  L112        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2023-12-25 22:43:09,853 INFO  L270        PluginConnector]: Initializing Boogie Preprocessor...
[2023-12-25 22:43:09,853 INFO  L274        PluginConnector]: Boogie Preprocessor initialized
[2023-12-25 22:43:09,860 INFO  L184        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 10:43:07" (1/1) ...
[2023-12-25 22:43:09,861 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 10:43:07" (1/1) ...
[2023-12-25 22:43:10,486 INFO  L184        PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 10:43:07" (1/1) ...
[2023-12-25 22:43:10,750 INFO  L175           MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0].
[2023-12-25 22:43:10,750 INFO  L184        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 10:43:07" (1/1) ...
[2023-12-25 22:43:10,750 INFO  L184        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 10:43:07" (1/1) ...
[2023-12-25 22:43:11,455 INFO  L184        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 10:43:07" (1/1) ...
[2023-12-25 22:43:11,707 INFO  L184        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 10:43:07" (1/1) ...
[2023-12-25 22:43:11,806 INFO  L184        PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 10:43:07" (1/1) ...
[2023-12-25 22:43:11,880 INFO  L184        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 10:43:07" (1/1) ...
[2023-12-25 22:43:12,275 INFO  L131        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2023-12-25 22:43:12,276 INFO  L112        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2023-12-25 22:43:12,276 INFO  L270        PluginConnector]: Initializing RCFGBuilder...
[2023-12-25 22:43:12,276 INFO  L274        PluginConnector]: RCFGBuilder initialized
[2023-12-25 22:43:12,277 INFO  L184        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 10:43:07" (1/1) ...
[2023-12-25 22:43:12,281 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2023-12-25 22:43:12,287 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 22:43:12,296 INFO  L229       MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null)
[2023-12-25 22:43:12,311 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process
[2023-12-25 22:43:12,318 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2023-12-25 22:43:12,318 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int#0
[2023-12-25 22:43:12,318 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2023-12-25 22:43:12,319 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2023-12-25 22:43:13,237 INFO  L241             CfgBuilder]: Building ICFG
[2023-12-25 22:43:13,238 INFO  L267             CfgBuilder]: Building CFG for each procedure with an implementation
[2023-12-25 22:43:23,544 INFO  L282             CfgBuilder]: Performing block encoding
[2023-12-25 22:43:23,809 INFO  L304             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2023-12-25 22:43:23,809 INFO  L309             CfgBuilder]: Removed 1 assume(true) statements.
[2023-12-25 22:43:23,810 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.12 10:43:23 BoogieIcfgContainer
[2023-12-25 22:43:23,810 INFO  L131        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2023-12-25 22:43:23,812 INFO  L112        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2023-12-25 22:43:23,812 INFO  L270        PluginConnector]: Initializing TraceAbstraction...
[2023-12-25 22:43:23,814 INFO  L274        PluginConnector]: TraceAbstraction initialized
[2023-12-25 22:43:23,814 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.12 10:43:06" (1/3) ...
[2023-12-25 22:43:23,815 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@201df429 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.12 10:43:23, skipping insertion in model container
[2023-12-25 22:43:23,815 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 10:43:07" (2/3) ...
[2023-12-25 22:43:23,815 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@201df429 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.12 10:43:23, skipping insertion in model container
[2023-12-25 22:43:23,815 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.12 10:43:23" (3/3) ...
[2023-12-25 22:43:23,816 INFO  L112   eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.telephony.7.prop1-back-serstep.c
[2023-12-25 22:43:23,828 INFO  L204   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2023-12-25 22:43:23,829 INFO  L163   ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2023-12-25 22:43:23,921 INFO  L356      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2023-12-25 22:43:23,925 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;@61e3b91, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2023-12-25 22:43:23,926 INFO  L358      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2023-12-25 22:43:23,942 INFO  L276                IsEmpty]: Start isEmpty. Operand  has 6818 states, 6816 states have (on average 1.67018779342723) internal successors, (11384), 6817 states have internal predecessors, (11384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:43:23,972 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 731
[2023-12-25 22:43:23,972 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 22:43:23,973 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]
[2023-12-25 22:43:23,973 INFO  L420      AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 22:43:23,977 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 22:43:23,977 INFO  L85        PathProgramCache]: Analyzing trace with hash 207506214, now seen corresponding path program 1 times
[2023-12-25 22:43:23,983 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 22:43:23,983 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [751937899]
[2023-12-25 22:43:23,983 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:43:23,984 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 22:43:24,465 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 22:43:26,235 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-25 22:43:26,235 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 22:43:26,236 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [751937899]
[2023-12-25 22:43:26,236 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [751937899] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 22:43:26,236 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 22:43:26,236 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-12-25 22:43:26,237 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [171279149]
[2023-12-25 22:43:26,237 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 22:43:26,241 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-12-25 22:43:26,241 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 22:43:26,259 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-12-25 22:43:26,259 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-12-25 22:43:26,271 INFO  L87              Difference]: Start difference. First operand  has 6818 states, 6816 states have (on average 1.67018779342723) internal successors, (11384), 6817 states have internal predecessors, (11384), 0 states have call successors, (0), 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 182.5) internal successors, (730), 4 states have internal predecessors, (730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:43:26,512 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 22:43:26,512 INFO  L93              Difference]: Finished difference Result 13401 states and 22379 transitions.
[2023-12-25 22:43:26,513 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-12-25 22:43:26,515 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 182.5) internal successors, (730), 4 states have internal predecessors, (730), 0 states have call successors, (0), 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 730
[2023-12-25 22:43:26,518 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 22:43:26,548 INFO  L225             Difference]: With dead ends: 13401
[2023-12-25 22:43:26,549 INFO  L226             Difference]: Without dead ends: 6818
[2023-12-25 22:43:26,562 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-12-25 22:43:26,566 INFO  L413           NwaCegarLoop]: 11377 mSDtfsCounter, 1 mSDsluCounter, 22749 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 34126 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2023-12-25 22:43:26,566 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 34126 Invalid, 13 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-12-25 22:43:26,585 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 6818 states.
[2023-12-25 22:43:26,727 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 6818 to 6818.
[2023-12-25 22:43:26,737 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 6818 states, 6817 states have (on average 1.6696494058970222) internal successors, (11382), 6817 states have internal predecessors, (11382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:43:26,752 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 6818 states to 6818 states and 11382 transitions.
[2023-12-25 22:43:26,753 INFO  L78                 Accepts]: Start accepts. Automaton has 6818 states and 11382 transitions. Word has length 730
[2023-12-25 22:43:26,755 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 22:43:26,755 INFO  L495      AbstractCegarLoop]: Abstraction has 6818 states and 11382 transitions.
[2023-12-25 22:43:26,755 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 182.5) internal successors, (730), 4 states have internal predecessors, (730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:43:26,755 INFO  L276                IsEmpty]: Start isEmpty. Operand 6818 states and 11382 transitions.
[2023-12-25 22:43:26,766 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 732
[2023-12-25 22:43:26,766 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 22:43:26,766 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]
[2023-12-25 22:43:26,766 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2023-12-25 22:43:26,767 INFO  L420      AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 22:43:26,767 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 22:43:26,767 INFO  L85        PathProgramCache]: Analyzing trace with hash 2139454642, now seen corresponding path program 1 times
[2023-12-25 22:43:26,767 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 22:43:26,768 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2057816252]
[2023-12-25 22:43:26,768 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:43:26,768 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 22:43:27,020 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 22:43:27,697 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-25 22:43:27,698 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 22:43:27,698 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2057816252]
[2023-12-25 22:43:27,698 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2057816252] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 22:43:27,699 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 22:43:27,699 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-12-25 22:43:27,699 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2024519679]
[2023-12-25 22:43:27,699 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 22:43:27,702 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-12-25 22:43:27,705 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 22:43:27,706 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-12-25 22:43:27,706 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-12-25 22:43:27,706 INFO  L87              Difference]: Start difference. First operand 6818 states and 11382 transitions. Second operand  has 4 states, 4 states have (on average 182.75) internal successors, (731), 4 states have internal predecessors, (731), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:43:27,901 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 22:43:27,902 INFO  L93              Difference]: Finished difference Result 13404 states and 22377 transitions.
[2023-12-25 22:43:27,903 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-12-25 22:43:27,903 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 182.75) internal successors, (731), 4 states have internal predecessors, (731), 0 states have call successors, (0), 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 731
[2023-12-25 22:43:27,904 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 22:43:27,921 INFO  L225             Difference]: With dead ends: 13404
[2023-12-25 22:43:27,921 INFO  L226             Difference]: Without dead ends: 6821
[2023-12-25 22:43:27,928 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-12-25 22:43:27,929 INFO  L413           NwaCegarLoop]: 11377 mSDtfsCounter, 1 mSDsluCounter, 22747 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 34124 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2023-12-25 22:43:27,930 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 34124 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-12-25 22:43:27,938 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 6821 states.
[2023-12-25 22:43:28,014 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 6821 to 6820.
[2023-12-25 22:43:28,125 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 6820 states, 6819 states have (on average 1.6694529989734566) internal successors, (11384), 6819 states have internal predecessors, (11384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:43:28,145 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 6820 states to 6820 states and 11384 transitions.
[2023-12-25 22:43:28,145 INFO  L78                 Accepts]: Start accepts. Automaton has 6820 states and 11384 transitions. Word has length 731
[2023-12-25 22:43:28,146 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 22:43:28,146 INFO  L495      AbstractCegarLoop]: Abstraction has 6820 states and 11384 transitions.
[2023-12-25 22:43:28,147 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 182.75) internal successors, (731), 4 states have internal predecessors, (731), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:43:28,147 INFO  L276                IsEmpty]: Start isEmpty. Operand 6820 states and 11384 transitions.
[2023-12-25 22:43:28,157 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 733
[2023-12-25 22:43:28,157 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 22:43:28,158 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]
[2023-12-25 22:43:28,158 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2023-12-25 22:43:28,158 INFO  L420      AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 22:43:28,164 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 22:43:28,165 INFO  L85        PathProgramCache]: Analyzing trace with hash -831803582, now seen corresponding path program 1 times
[2023-12-25 22:43:28,165 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 22:43:28,165 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [425177123]
[2023-12-25 22:43:28,165 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:43:28,165 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 22:43:28,373 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 22:43:29,160 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-25 22:43:29,160 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 22:43:29,161 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [425177123]
[2023-12-25 22:43:29,161 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [425177123] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 22:43:29,161 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 22:43:29,161 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-12-25 22:43:29,161 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1830962898]
[2023-12-25 22:43:29,161 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 22:43:29,162 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-12-25 22:43:29,162 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 22:43:29,163 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-12-25 22:43:29,163 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2023-12-25 22:43:29,163 INFO  L87              Difference]: Start difference. First operand 6820 states and 11384 transitions. Second operand  has 5 states, 5 states have (on average 146.4) internal successors, (732), 4 states have internal predecessors, (732), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:43:29,514 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 22:43:29,514 INFO  L93              Difference]: Finished difference Result 20832 states and 34775 transitions.
[2023-12-25 22:43:29,514 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2023-12-25 22:43:29,514 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 146.4) internal successors, (732), 4 states have internal predecessors, (732), 0 states have call successors, (0), 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 732
[2023-12-25 22:43:29,515 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 22:43:29,547 INFO  L225             Difference]: With dead ends: 20832
[2023-12-25 22:43:29,547 INFO  L226             Difference]: Without dead ends: 14247
[2023-12-25 22:43:29,555 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56
[2023-12-25 22:43:29,556 INFO  L413           NwaCegarLoop]: 12791 mSDtfsCounter, 45015 mSDsluCounter, 22748 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45015 SdHoareTripleChecker+Valid, 35539 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 22:43:29,556 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [45015 Valid, 35539 Invalid, 16 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-12-25 22:43:29,567 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14247 states.
[2023-12-25 22:43:29,663 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14247 to 7671.
[2023-12-25 22:43:29,671 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7671 states, 7670 states have (on average 1.6689700130378096) internal successors, (12801), 7670 states have internal predecessors, (12801), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:43:29,684 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7671 states to 7671 states and 12801 transitions.
[2023-12-25 22:43:29,685 INFO  L78                 Accepts]: Start accepts. Automaton has 7671 states and 12801 transitions. Word has length 732
[2023-12-25 22:43:29,685 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 22:43:29,685 INFO  L495      AbstractCegarLoop]: Abstraction has 7671 states and 12801 transitions.
[2023-12-25 22:43:29,686 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 146.4) internal successors, (732), 4 states have internal predecessors, (732), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:43:29,686 INFO  L276                IsEmpty]: Start isEmpty. Operand 7671 states and 12801 transitions.
[2023-12-25 22:43:29,813 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5000
[2023-12-25 22:43:29,813 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 22:43:29,815 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-12-25 22:43:29,816 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2023-12-25 22:43:29,816 INFO  L420      AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 22:43:29,816 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 22:43:29,817 INFO  L85        PathProgramCache]: Analyzing trace with hash 2042420834, now seen corresponding path program 1 times
[2023-12-25 22:43:29,817 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 22:43:29,817 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1405938100]
[2023-12-25 22:43:29,817 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:43:29,818 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 22:43:30,171 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 22:43:30,172 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1185940914]
[2023-12-25 22:43:30,173 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:43:30,173 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 22:43:30,173 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 22:43:30,175 INFO  L229       MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-25 22:43:30,182 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process
[2023-12-25 22:43:35,519 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 22:43:35,669 INFO  L262         TraceCheckSpWp]: Trace formula consists of 22350 conjuncts, 6 conjunts are in the unsatisfiable core
[2023-12-25 22:43:35,781 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 22:43:35,940 INFO  L134       CoverageAnalysis]: Checked inductivity of 572 backedges. 572 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-25 22:43:35,941 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 22:43:35,941 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 22:43:35,941 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1405938100]
[2023-12-25 22:43:35,941 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 22:43:35,941 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1185940914]
[2023-12-25 22:43:35,941 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1185940914] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 22:43:35,941 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 22:43:35,942 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-12-25 22:43:35,942 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [555467515]
[2023-12-25 22:43:35,942 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 22:43:35,946 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-12-25 22:43:35,947 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 22:43:35,950 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-12-25 22:43:35,951 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-12-25 22:43:35,952 INFO  L87              Difference]: Start difference. First operand 7671 states and 12801 transitions. Second operand  has 4 states, 4 states have (on average 1249.75) internal successors, (4999), 4 states have internal predecessors, (4999), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:43:36,137 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 22:43:36,137 INFO  L93              Difference]: Finished difference Result 14266 states and 23810 transitions.
[2023-12-25 22:43:36,137 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-12-25 22:43:36,139 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 1249.75) internal successors, (4999), 4 states have internal predecessors, (4999), 0 states have call successors, (0), 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 4999
[2023-12-25 22:43:36,140 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 22:43:36,150 INFO  L225             Difference]: With dead ends: 14266
[2023-12-25 22:43:36,151 INFO  L226             Difference]: Without dead ends: 7681
[2023-12-25 22:43:36,159 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 4998 GetRequests, 4996 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-12-25 22:43:36,164 INFO  L413           NwaCegarLoop]: 11377 mSDtfsCounter, 12 mSDsluCounter, 22744 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 34121 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2023-12-25 22:43:36,165 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 34121 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-12-25 22:43:36,176 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 7681 states.
[2023-12-25 22:43:36,263 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 7681 to 7673.
[2023-12-25 22:43:36,272 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7673 states, 7672 states have (on average 1.6687956204379562) internal successors, (12803), 7672 states have internal predecessors, (12803), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:43:36,292 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7673 states to 7673 states and 12803 transitions.
[2023-12-25 22:43:36,293 INFO  L78                 Accepts]: Start accepts. Automaton has 7673 states and 12803 transitions. Word has length 4999
[2023-12-25 22:43:36,295 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 22:43:36,296 INFO  L495      AbstractCegarLoop]: Abstraction has 7673 states and 12803 transitions.
[2023-12-25 22:43:36,297 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 1249.75) internal successors, (4999), 4 states have internal predecessors, (4999), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:43:36,297 INFO  L276                IsEmpty]: Start isEmpty. Operand 7673 states and 12803 transitions.
[2023-12-25 22:43:36,449 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5000
[2023-12-25 22:43:36,449 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 22:43:36,452 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-12-25 22:43:36,514 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0
[2023-12-25 22:43:36,668 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 22:43:36,669 INFO  L420      AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 22:43:36,669 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 22:43:36,670 INFO  L85        PathProgramCache]: Analyzing trace with hash -442481488, now seen corresponding path program 1 times
[2023-12-25 22:43:36,671 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 22:43:36,671 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1891381169]
[2023-12-25 22:43:36,671 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:43:36,671 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 22:43:37,146 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 22:43:37,146 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1878543671]
[2023-12-25 22:43:37,147 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:43:37,147 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 22:43:37,148 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 22:43:37,149 INFO  L229       MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-25 22:43:37,151 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process
[2023-12-25 22:43:42,429 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 22:43:42,562 INFO  L262         TraceCheckSpWp]: Trace formula consists of 22351 conjuncts, 6 conjunts are in the unsatisfiable core
[2023-12-25 22:43:42,733 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 22:43:42,866 INFO  L134       CoverageAnalysis]: Checked inductivity of 572 backedges. 572 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-25 22:43:42,866 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 22:43:42,866 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 22:43:42,867 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1891381169]
[2023-12-25 22:43:42,867 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 22:43:42,867 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1878543671]
[2023-12-25 22:43:42,867 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1878543671] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 22:43:42,867 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 22:43:42,867 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-12-25 22:43:42,868 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [254858876]
[2023-12-25 22:43:42,868 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 22:43:42,872 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-12-25 22:43:42,872 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 22:43:42,875 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-12-25 22:43:42,875 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-12-25 22:43:42,876 INFO  L87              Difference]: Start difference. First operand 7673 states and 12803 transitions. Second operand  has 4 states, 4 states have (on average 1249.75) internal successors, (4999), 4 states have internal predecessors, (4999), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:43:43,061 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 22:43:43,061 INFO  L93              Difference]: Finished difference Result 14269 states and 23812 transitions.
[2023-12-25 22:43:43,062 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-12-25 22:43:43,063 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 1249.75) internal successors, (4999), 4 states have internal predecessors, (4999), 0 states have call successors, (0), 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 4999
[2023-12-25 22:43:43,066 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 22:43:43,076 INFO  L225             Difference]: With dead ends: 14269
[2023-12-25 22:43:43,076 INFO  L226             Difference]: Without dead ends: 7682
[2023-12-25 22:43:43,084 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 4998 GetRequests, 4996 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-12-25 22:43:43,084 INFO  L413           NwaCegarLoop]: 11377 mSDtfsCounter, 12 mSDsluCounter, 22744 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 34121 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 22:43:43,085 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 34121 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-12-25 22:43:43,091 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 7682 states.
[2023-12-25 22:43:43,164 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 7682 to 7674.
[2023-12-25 22:43:43,173 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7674 states, 7673 states have (on average 1.6687084582301577) internal successors, (12804), 7673 states have internal predecessors, (12804), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:43:43,183 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7674 states to 7674 states and 12804 transitions.
[2023-12-25 22:43:43,184 INFO  L78                 Accepts]: Start accepts. Automaton has 7674 states and 12804 transitions. Word has length 4999
[2023-12-25 22:43:43,187 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 22:43:43,187 INFO  L495      AbstractCegarLoop]: Abstraction has 7674 states and 12804 transitions.
[2023-12-25 22:43:43,189 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 1249.75) internal successors, (4999), 4 states have internal predecessors, (4999), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:43:43,189 INFO  L276                IsEmpty]: Start isEmpty. Operand 7674 states and 12804 transitions.
[2023-12-25 22:43:43,506 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5000
[2023-12-25 22:43:43,506 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 22:43:43,509 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-12-25 22:43:43,567 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0
[2023-12-25 22:43:43,732 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 22:43:43,733 INFO  L420      AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 22:43:43,734 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 22:43:43,735 INFO  L85        PathProgramCache]: Analyzing trace with hash -1569664258, now seen corresponding path program 1 times
[2023-12-25 22:43:43,735 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 22:43:43,735 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1529444995]
[2023-12-25 22:43:43,736 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:43:43,736 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 22:43:44,069 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 22:43:44,069 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [47291036]
[2023-12-25 22:43:44,070 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:43:44,070 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 22:43:44,071 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 22:43:44,071 INFO  L229       MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-25 22:43:44,097 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process
[2023-12-25 22:43:49,023 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 22:43:49,160 INFO  L262         TraceCheckSpWp]: Trace formula consists of 22352 conjuncts, 6 conjunts are in the unsatisfiable core
[2023-12-25 22:43:49,256 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 22:43:49,333 INFO  L134       CoverageAnalysis]: Checked inductivity of 572 backedges. 572 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-25 22:43:49,333 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 22:43:49,333 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 22:43:49,333 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1529444995]
[2023-12-25 22:43:49,333 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 22:43:49,334 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [47291036]
[2023-12-25 22:43:49,334 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [47291036] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 22:43:49,334 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 22:43:49,334 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-12-25 22:43:49,334 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1204705720]
[2023-12-25 22:43:49,334 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 22:43:49,338 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-12-25 22:43:49,338 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 22:43:49,341 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-12-25 22:43:49,341 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-12-25 22:43:49,342 INFO  L87              Difference]: Start difference. First operand 7674 states and 12804 transitions. Second operand  has 4 states, 4 states have (on average 1249.75) internal successors, (4999), 4 states have internal predecessors, (4999), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:43:49,642 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 22:43:49,642 INFO  L93              Difference]: Finished difference Result 14271 states and 23814 transitions.
[2023-12-25 22:43:49,643 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-12-25 22:43:49,644 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 1249.75) internal successors, (4999), 4 states have internal predecessors, (4999), 0 states have call successors, (0), 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 4999
[2023-12-25 22:43:49,647 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 22:43:49,657 INFO  L225             Difference]: With dead ends: 14271
[2023-12-25 22:43:49,657 INFO  L226             Difference]: Without dead ends: 7683
[2023-12-25 22:43:49,665 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 4998 GetRequests, 4996 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-12-25 22:43:49,666 INFO  L413           NwaCegarLoop]: 11377 mSDtfsCounter, 12 mSDsluCounter, 22744 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 34121 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2023-12-25 22:43:49,666 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 34121 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2023-12-25 22:43:49,672 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 7683 states.
[2023-12-25 22:43:49,728 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 7683 to 7675.
[2023-12-25 22:43:49,735 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7675 states, 7674 states have (on average 1.6686213187385979) internal successors, (12805), 7674 states have internal predecessors, (12805), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:43:49,743 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7675 states to 7675 states and 12805 transitions.
[2023-12-25 22:43:49,743 INFO  L78                 Accepts]: Start accepts. Automaton has 7675 states and 12805 transitions. Word has length 4999
[2023-12-25 22:43:49,749 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 22:43:49,750 INFO  L495      AbstractCegarLoop]: Abstraction has 7675 states and 12805 transitions.
[2023-12-25 22:43:49,751 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 1249.75) internal successors, (4999), 4 states have internal predecessors, (4999), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:43:49,751 INFO  L276                IsEmpty]: Start isEmpty. Operand 7675 states and 12805 transitions.
[2023-12-25 22:43:49,876 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5000
[2023-12-25 22:43:49,876 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 22:43:49,878 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-12-25 22:43:49,935 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0
[2023-12-25 22:43:50,104 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 22:43:50,105 INFO  L420      AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 22:43:50,105 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 22:43:50,106 INFO  L85        PathProgramCache]: Analyzing trace with hash 1917144140, now seen corresponding path program 1 times
[2023-12-25 22:43:50,106 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 22:43:50,106 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [703434806]
[2023-12-25 22:43:50,107 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:43:50,107 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 22:43:50,413 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 22:43:50,413 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [858385578]
[2023-12-25 22:43:50,414 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:43:50,414 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 22:43:50,414 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 22:43:50,436 INFO  L229       MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-25 22:43:50,437 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process
[2023-12-25 22:43:55,517 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 22:43:55,651 INFO  L262         TraceCheckSpWp]: Trace formula consists of 22353 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-12-25 22:43:55,720 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 22:43:55,962 INFO  L134       CoverageAnalysis]: Checked inductivity of 572 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 566 trivial. 0 not checked.
[2023-12-25 22:43:55,962 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 22:43:55,962 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 22:43:55,962 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [703434806]
[2023-12-25 22:43:55,962 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 22:43:55,962 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [858385578]
[2023-12-25 22:43:55,962 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [858385578] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 22:43:55,962 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 22:43:55,963 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-12-25 22:43:55,963 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2114319558]
[2023-12-25 22:43:55,963 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 22:43:55,967 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-12-25 22:43:55,967 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 22:43:55,970 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-12-25 22:43:55,970 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-12-25 22:43:55,970 INFO  L87              Difference]: Start difference. First operand 7675 states and 12805 transitions. Second operand  has 7 states, 7 states have (on average 633.4285714285714) internal successors, (4434), 7 states have internal predecessors, (4434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:43:56,347 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 22:43:56,347 INFO  L93              Difference]: Finished difference Result 20850 states and 34793 transitions.
[2023-12-25 22:43:56,347 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-12-25 22:43:56,348 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 633.4285714285714) internal successors, (4434), 7 states have internal predecessors, (4434), 0 states have call successors, (0), 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 4999
[2023-12-25 22:43:56,353 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 22:43:56,371 INFO  L225             Difference]: With dead ends: 20850
[2023-12-25 22:43:56,371 INFO  L226             Difference]: Without dead ends: 14261
[2023-12-25 22:43:56,380 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5008 GetRequests, 4996 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-12-25 22:43:56,381 INFO  L413           NwaCegarLoop]: 12789 mSDtfsCounter, 31775 mSDsluCounter, 49726 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31775 SdHoareTripleChecker+Valid, 62515 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-12-25 22:43:56,381 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [31775 Valid, 62515 Invalid, 47 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-12-25 22:43:56,569 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14261 states.
[2023-12-25 22:43:56,637 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14261 to 7675.
[2023-12-25 22:43:56,645 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7675 states, 7674 states have (on average 1.6686213187385979) internal successors, (12805), 7674 states have internal predecessors, (12805), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:43:56,652 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7675 states to 7675 states and 12805 transitions.
[2023-12-25 22:43:56,653 INFO  L78                 Accepts]: Start accepts. Automaton has 7675 states and 12805 transitions. Word has length 4999
[2023-12-25 22:43:56,657 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 22:43:56,657 INFO  L495      AbstractCegarLoop]: Abstraction has 7675 states and 12805 transitions.
[2023-12-25 22:43:56,658 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 633.4285714285714) internal successors, (4434), 7 states have internal predecessors, (4434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:43:56,658 INFO  L276                IsEmpty]: Start isEmpty. Operand 7675 states and 12805 transitions.
[2023-12-25 22:43:56,782 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5001
[2023-12-25 22:43:56,783 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 22:43:56,785 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-12-25 22:43:56,845 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0
[2023-12-25 22:43:57,012 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 22:43:57,013 INFO  L420      AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 22:43:57,013 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 22:43:57,014 INFO  L85        PathProgramCache]: Analyzing trace with hash -808775984, now seen corresponding path program 1 times
[2023-12-25 22:43:57,014 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 22:43:57,014 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [887364395]
[2023-12-25 22:43:57,015 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:43:57,015 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 22:43:57,319 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 22:43:57,319 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1444301765]
[2023-12-25 22:43:57,320 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:43:57,320 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 22:43:57,320 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 22:43:57,321 INFO  L229       MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-25 22:43:57,347 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process
[2023-12-25 22:44:02,472 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 22:44:02,616 INFO  L262         TraceCheckSpWp]: Trace formula consists of 22356 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-12-25 22:44:02,872 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 22:44:03,114 INFO  L134       CoverageAnalysis]: Checked inductivity of 572 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 564 trivial. 0 not checked.
[2023-12-25 22:44:03,115 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 22:44:03,115 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 22:44:03,115 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [887364395]
[2023-12-25 22:44:03,115 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 22:44:03,115 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1444301765]
[2023-12-25 22:44:03,115 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1444301765] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 22:44:03,116 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 22:44:03,116 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-12-25 22:44:03,119 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1182640379]
[2023-12-25 22:44:03,119 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 22:44:03,122 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-12-25 22:44:03,123 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 22:44:03,125 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-12-25 22:44:03,125 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-12-25 22:44:03,126 INFO  L87              Difference]: Start difference. First operand 7675 states and 12805 transitions. Second operand  has 7 states, 7 states have (on average 633.8571428571429) internal successors, (4437), 7 states have internal predecessors, (4437), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:44:03,482 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 22:44:03,482 INFO  L93              Difference]: Finished difference Result 20852 states and 34795 transitions.
[2023-12-25 22:44:03,482 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-12-25 22:44:03,484 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 633.8571428571429) internal successors, (4437), 7 states have internal predecessors, (4437), 0 states have call successors, (0), 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 5000
[2023-12-25 22:44:03,490 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 22:44:03,508 INFO  L225             Difference]: With dead ends: 20852
[2023-12-25 22:44:03,508 INFO  L226             Difference]: Without dead ends: 14260
[2023-12-25 22:44:03,518 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5009 GetRequests, 4997 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-12-25 22:44:03,519 INFO  L413           NwaCegarLoop]: 12784 mSDtfsCounter, 31774 mSDsluCounter, 49710 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31774 SdHoareTripleChecker+Valid, 62494 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-12-25 22:44:03,519 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [31774 Valid, 62494 Invalid, 48 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-12-25 22:44:03,531 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14260 states.
[2023-12-25 22:44:03,618 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14260 to 7677.
[2023-12-25 22:44:03,627 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7677 states, 7676 states have (on average 1.6684471078686816) internal successors, (12807), 7676 states have internal predecessors, (12807), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:44:03,635 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7677 states to 7677 states and 12807 transitions.
[2023-12-25 22:44:03,635 INFO  L78                 Accepts]: Start accepts. Automaton has 7677 states and 12807 transitions. Word has length 5000
[2023-12-25 22:44:03,638 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 22:44:03,638 INFO  L495      AbstractCegarLoop]: Abstraction has 7677 states and 12807 transitions.
[2023-12-25 22:44:03,639 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 633.8571428571429) internal successors, (4437), 7 states have internal predecessors, (4437), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:44:03,639 INFO  L276                IsEmpty]: Start isEmpty. Operand 7677 states and 12807 transitions.
[2023-12-25 22:44:03,817 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5002
[2023-12-25 22:44:03,819 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 22:44:03,821 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-12-25 22:44:03,893 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0
[2023-12-25 22:44:04,037 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 22:44:04,037 INFO  L420      AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 22:44:04,038 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 22:44:04,039 INFO  L85        PathProgramCache]: Analyzing trace with hash 498949478, now seen corresponding path program 1 times
[2023-12-25 22:44:04,039 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 22:44:04,039 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [530789851]
[2023-12-25 22:44:04,039 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:44:04,040 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 22:44:04,368 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 22:44:04,368 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1719231016]
[2023-12-25 22:44:04,369 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:44:04,369 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 22:44:04,369 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 22:44:04,381 INFO  L229       MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-25 22:44:04,405 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process
[2023-12-25 22:44:09,532 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 22:44:09,659 INFO  L262         TraceCheckSpWp]: Trace formula consists of 22359 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-12-25 22:44:09,708 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 22:44:09,945 INFO  L134       CoverageAnalysis]: Checked inductivity of 572 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 562 trivial. 0 not checked.
[2023-12-25 22:44:09,945 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 22:44:09,945 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 22:44:09,945 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [530789851]
[2023-12-25 22:44:09,945 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 22:44:09,945 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1719231016]
[2023-12-25 22:44:09,945 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1719231016] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 22:44:09,945 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 22:44:09,946 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-12-25 22:44:09,946 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1090549138]
[2023-12-25 22:44:09,946 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 22:44:09,950 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-12-25 22:44:09,950 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 22:44:09,952 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-12-25 22:44:09,952 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-12-25 22:44:09,953 INFO  L87              Difference]: Start difference. First operand 7677 states and 12807 transitions. Second operand  has 7 states, 7 states have (on average 634.2857142857143) internal successors, (4440), 7 states have internal predecessors, (4440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:44:10,285 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 22:44:10,285 INFO  L93              Difference]: Finished difference Result 20858 states and 34801 transitions.
[2023-12-25 22:44:10,285 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-12-25 22:44:10,287 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 634.2857142857143) internal successors, (4440), 7 states have internal predecessors, (4440), 0 states have call successors, (0), 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 5001
[2023-12-25 22:44:10,291 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 22:44:10,321 INFO  L225             Difference]: With dead ends: 20858
[2023-12-25 22:44:10,322 INFO  L226             Difference]: Without dead ends: 14261
[2023-12-25 22:44:10,331 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5010 GetRequests, 4998 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-12-25 22:44:10,333 INFO  L413           NwaCegarLoop]: 12779 mSDtfsCounter, 31773 mSDsluCounter, 49695 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31773 SdHoareTripleChecker+Valid, 62474 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-12-25 22:44:10,333 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [31773 Valid, 62474 Invalid, 48 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-12-25 22:44:10,344 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14261 states.
[2023-12-25 22:44:10,439 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14261 to 7679.
[2023-12-25 22:44:10,446 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7679 states, 7678 states have (on average 1.6682729877572284) internal successors, (12809), 7678 states have internal predecessors, (12809), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:44:10,454 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7679 states to 7679 states and 12809 transitions.
[2023-12-25 22:44:10,454 INFO  L78                 Accepts]: Start accepts. Automaton has 7679 states and 12809 transitions. Word has length 5001
[2023-12-25 22:44:10,457 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 22:44:10,457 INFO  L495      AbstractCegarLoop]: Abstraction has 7679 states and 12809 transitions.
[2023-12-25 22:44:10,458 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 634.2857142857143) internal successors, (4440), 7 states have internal predecessors, (4440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:44:10,458 INFO  L276                IsEmpty]: Start isEmpty. Operand 7679 states and 12809 transitions.
[2023-12-25 22:44:10,671 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5003
[2023-12-25 22:44:10,672 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 22:44:10,674 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-12-25 22:44:10,740 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0
[2023-12-25 22:44:10,900 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 22:44:10,900 INFO  L420      AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 22:44:10,901 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 22:44:10,902 INFO  L85        PathProgramCache]: Analyzing trace with hash 2122523318, now seen corresponding path program 1 times
[2023-12-25 22:44:10,902 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 22:44:10,902 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [771851253]
[2023-12-25 22:44:10,903 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:44:10,903 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 22:44:11,208 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 22:44:11,208 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [535741977]
[2023-12-25 22:44:11,209 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:44:11,209 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 22:44:11,209 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 22:44:11,210 INFO  L229       MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-25 22:44:11,236 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process
[2023-12-25 22:44:16,194 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 22:44:16,325 INFO  L262         TraceCheckSpWp]: Trace formula consists of 22362 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-12-25 22:44:16,380 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 22:44:16,760 INFO  L134       CoverageAnalysis]: Checked inductivity of 572 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 560 trivial. 0 not checked.
[2023-12-25 22:44:16,760 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 22:44:16,760 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 22:44:16,760 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [771851253]
[2023-12-25 22:44:16,760 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 22:44:16,760 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [535741977]
[2023-12-25 22:44:16,760 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [535741977] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 22:44:16,761 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 22:44:16,761 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-12-25 22:44:16,762 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [773618688]
[2023-12-25 22:44:16,763 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 22:44:16,766 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-12-25 22:44:16,766 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 22:44:16,768 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-12-25 22:44:16,768 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-12-25 22:44:16,769 INFO  L87              Difference]: Start difference. First operand 7679 states and 12809 transitions. Second operand  has 7 states, 7 states have (on average 634.7142857142857) internal successors, (4443), 7 states have internal predecessors, (4443), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:44:17,095 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 22:44:17,095 INFO  L93              Difference]: Finished difference Result 20864 states and 34807 transitions.
[2023-12-25 22:44:17,095 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-12-25 22:44:17,097 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 634.7142857142857) internal successors, (4443), 7 states have internal predecessors, (4443), 0 states have call successors, (0), 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 5002
[2023-12-25 22:44:17,102 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 22:44:17,124 INFO  L225             Difference]: With dead ends: 20864
[2023-12-25 22:44:17,126 INFO  L226             Difference]: Without dead ends: 14262
[2023-12-25 22:44:17,135 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5011 GetRequests, 4999 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-12-25 22:44:17,136 INFO  L413           NwaCegarLoop]: 12774 mSDtfsCounter, 31772 mSDsluCounter, 49680 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31772 SdHoareTripleChecker+Valid, 62454 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-12-25 22:44:17,137 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [31772 Valid, 62454 Invalid, 48 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-12-25 22:44:17,145 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14262 states.
[2023-12-25 22:44:17,213 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14262 to 7681.
[2023-12-25 22:44:17,219 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7681 states, 7680 states have (on average 1.6680989583333334) internal successors, (12811), 7680 states have internal predecessors, (12811), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:44:17,226 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7681 states to 7681 states and 12811 transitions.
[2023-12-25 22:44:17,226 INFO  L78                 Accepts]: Start accepts. Automaton has 7681 states and 12811 transitions. Word has length 5002
[2023-12-25 22:44:17,228 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 22:44:17,228 INFO  L495      AbstractCegarLoop]: Abstraction has 7681 states and 12811 transitions.
[2023-12-25 22:44:17,229 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 634.7142857142857) internal successors, (4443), 7 states have internal predecessors, (4443), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:44:17,229 INFO  L276                IsEmpty]: Start isEmpty. Operand 7681 states and 12811 transitions.
[2023-12-25 22:44:17,442 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5004
[2023-12-25 22:44:17,443 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 22:44:17,446 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-12-25 22:44:17,510 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 22:44:17,672 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 22:44:17,673 INFO  L420      AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 22:44:17,673 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 22:44:17,674 INFO  L85        PathProgramCache]: Analyzing trace with hash 3813378, now seen corresponding path program 1 times
[2023-12-25 22:44:17,674 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 22:44:17,674 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1614641076]
[2023-12-25 22:44:17,675 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:44:17,675 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 22:44:17,977 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 22:44:17,977 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [378517852]
[2023-12-25 22:44:17,978 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:44:17,978 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 22:44:17,978 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 22:44:17,979 INFO  L229       MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-25 22:44:17,981 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process
[2023-12-25 22:44:22,891 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 22:44:23,028 INFO  L262         TraceCheckSpWp]: Trace formula consists of 22366 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-12-25 22:44:23,081 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 22:44:23,289 INFO  L134       CoverageAnalysis]: Checked inductivity of 572 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 558 trivial. 0 not checked.
[2023-12-25 22:44:23,289 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 22:44:23,289 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 22:44:23,289 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1614641076]
[2023-12-25 22:44:23,289 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 22:44:23,289 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [378517852]
[2023-12-25 22:44:23,289 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [378517852] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 22:44:23,290 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 22:44:23,290 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-12-25 22:44:23,290 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1513825919]
[2023-12-25 22:44:23,290 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 22:44:23,293 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-12-25 22:44:23,293 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 22:44:23,296 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-12-25 22:44:23,296 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-12-25 22:44:23,296 INFO  L87              Difference]: Start difference. First operand 7681 states and 12811 transitions. Second operand  has 7 states, 7 states have (on average 635.1428571428571) internal successors, (4446), 7 states have internal predecessors, (4446), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:44:23,716 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 22:44:23,717 INFO  L93              Difference]: Finished difference Result 20870 states and 34813 transitions.
[2023-12-25 22:44:23,717 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-12-25 22:44:23,718 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 635.1428571428571) internal successors, (4446), 7 states have internal predecessors, (4446), 0 states have call successors, (0), 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 5003
[2023-12-25 22:44:23,721 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 22:44:23,735 INFO  L225             Difference]: With dead ends: 20870
[2023-12-25 22:44:23,735 INFO  L226             Difference]: Without dead ends: 14263
[2023-12-25 22:44:23,740 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5012 GetRequests, 5000 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-12-25 22:44:23,740 INFO  L413           NwaCegarLoop]: 12769 mSDtfsCounter, 31771 mSDsluCounter, 49665 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31771 SdHoareTripleChecker+Valid, 62434 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-12-25 22:44:23,740 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [31771 Valid, 62434 Invalid, 48 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-12-25 22:44:23,749 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14263 states.
[2023-12-25 22:44:23,815 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14263 to 7683.
[2023-12-25 22:44:23,822 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7683 states, 7682 states have (on average 1.667925019526165) internal successors, (12813), 7682 states have internal predecessors, (12813), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:44:23,829 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7683 states to 7683 states and 12813 transitions.
[2023-12-25 22:44:23,829 INFO  L78                 Accepts]: Start accepts. Automaton has 7683 states and 12813 transitions. Word has length 5003
[2023-12-25 22:44:23,831 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 22:44:23,832 INFO  L495      AbstractCegarLoop]: Abstraction has 7683 states and 12813 transitions.
[2023-12-25 22:44:23,832 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 635.1428571428571) internal successors, (4446), 7 states have internal predecessors, (4446), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:44:23,832 INFO  L276                IsEmpty]: Start isEmpty. Operand 7683 states and 12813 transitions.
[2023-12-25 22:44:23,955 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5005
[2023-12-25 22:44:23,956 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 22:44:23,958 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-12-25 22:44:24,028 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0
[2023-12-25 22:44:24,184 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 22:44:24,184 INFO  L420      AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 22:44:24,185 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 22:44:24,186 INFO  L85        PathProgramCache]: Analyzing trace with hash -1689818082, now seen corresponding path program 1 times
[2023-12-25 22:44:24,186 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 22:44:24,186 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [278679824]
[2023-12-25 22:44:24,187 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:44:24,187 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 22:44:24,496 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 22:44:24,496 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [539493045]
[2023-12-25 22:44:24,497 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:44:24,497 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 22:44:24,497 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 22:44:24,498 INFO  L229       MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-25 22:44:24,516 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process
[2023-12-25 22:44:29,609 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 22:44:29,750 INFO  L262         TraceCheckSpWp]: Trace formula consists of 22369 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-12-25 22:44:29,803 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 22:44:30,024 INFO  L134       CoverageAnalysis]: Checked inductivity of 572 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 556 trivial. 0 not checked.
[2023-12-25 22:44:30,024 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 22:44:30,024 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 22:44:30,024 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [278679824]
[2023-12-25 22:44:30,024 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 22:44:30,024 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [539493045]
[2023-12-25 22:44:30,025 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [539493045] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 22:44:30,025 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 22:44:30,025 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-12-25 22:44:30,025 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1715936982]
[2023-12-25 22:44:30,025 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 22:44:30,030 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-12-25 22:44:30,030 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 22:44:30,033 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-12-25 22:44:30,033 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-12-25 22:44:30,033 INFO  L87              Difference]: Start difference. First operand 7683 states and 12813 transitions. Second operand  has 7 states, 7 states have (on average 635.5714285714286) internal successors, (4449), 7 states have internal predecessors, (4449), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:44:30,487 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 22:44:30,487 INFO  L93              Difference]: Finished difference Result 20876 states and 34819 transitions.
[2023-12-25 22:44:30,487 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-12-25 22:44:30,488 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 635.5714285714286) internal successors, (4449), 7 states have internal predecessors, (4449), 0 states have call successors, (0), 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 5004
[2023-12-25 22:44:30,492 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 22:44:30,505 INFO  L225             Difference]: With dead ends: 20876
[2023-12-25 22:44:30,506 INFO  L226             Difference]: Without dead ends: 14264
[2023-12-25 22:44:30,511 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5013 GetRequests, 5001 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-12-25 22:44:30,512 INFO  L413           NwaCegarLoop]: 12764 mSDtfsCounter, 31770 mSDsluCounter, 49650 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31770 SdHoareTripleChecker+Valid, 62414 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-12-25 22:44:30,512 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [31770 Valid, 62414 Invalid, 48 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-12-25 22:44:30,522 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14264 states.
[2023-12-25 22:44:30,590 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14264 to 7685.
[2023-12-25 22:44:30,597 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7685 states, 7684 states have (on average 1.6677511712649662) internal successors, (12815), 7684 states have internal predecessors, (12815), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:44:30,604 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7685 states to 7685 states and 12815 transitions.
[2023-12-25 22:44:30,604 INFO  L78                 Accepts]: Start accepts. Automaton has 7685 states and 12815 transitions. Word has length 5004
[2023-12-25 22:44:30,606 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 22:44:30,606 INFO  L495      AbstractCegarLoop]: Abstraction has 7685 states and 12815 transitions.
[2023-12-25 22:44:30,607 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 635.5714285714286) internal successors, (4449), 7 states have internal predecessors, (4449), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:44:30,607 INFO  L276                IsEmpty]: Start isEmpty. Operand 7685 states and 12815 transitions.
[2023-12-25 22:44:30,729 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5006
[2023-12-25 22:44:30,729 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 22:44:30,731 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-12-25 22:44:30,794 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0
[2023-12-25 22:44:30,948 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 22:44:30,949 INFO  L420      AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 22:44:30,949 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 22:44:30,950 INFO  L85        PathProgramCache]: Analyzing trace with hash -170697444, now seen corresponding path program 1 times
[2023-12-25 22:44:30,950 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 22:44:30,950 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [598294912]
[2023-12-25 22:44:30,951 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:44:30,951 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 22:44:31,254 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 22:44:31,254 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [749221046]
[2023-12-25 22:44:31,255 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:44:31,255 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 22:44:31,255 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 22:44:31,256 INFO  L229       MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-25 22:44:31,286 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process
[2023-12-25 22:44:36,301 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 22:44:36,448 INFO  L262         TraceCheckSpWp]: Trace formula consists of 22372 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-12-25 22:44:36,504 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 22:44:36,730 INFO  L134       CoverageAnalysis]: Checked inductivity of 572 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 554 trivial. 0 not checked.
[2023-12-25 22:44:36,730 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 22:44:36,730 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 22:44:36,730 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [598294912]
[2023-12-25 22:44:36,730 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 22:44:36,730 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [749221046]
[2023-12-25 22:44:36,730 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [749221046] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 22:44:36,730 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 22:44:36,731 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-12-25 22:44:36,731 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [8233335]
[2023-12-25 22:44:36,731 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 22:44:36,734 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-12-25 22:44:36,735 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 22:44:36,737 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-12-25 22:44:36,737 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-12-25 22:44:36,738 INFO  L87              Difference]: Start difference. First operand 7685 states and 12815 transitions. Second operand  has 7 states, 7 states have (on average 636.0) internal successors, (4452), 7 states have internal predecessors, (4452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:44:37,080 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 22:44:37,081 INFO  L93              Difference]: Finished difference Result 20882 states and 34825 transitions.
[2023-12-25 22:44:37,084 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-12-25 22:44:37,085 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 636.0) internal successors, (4452), 7 states have internal predecessors, (4452), 0 states have call successors, (0), 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 5005
[2023-12-25 22:44:37,088 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 22:44:37,104 INFO  L225             Difference]: With dead ends: 20882
[2023-12-25 22:44:37,104 INFO  L226             Difference]: Without dead ends: 14265
[2023-12-25 22:44:37,112 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5014 GetRequests, 5002 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-12-25 22:44:37,113 INFO  L413           NwaCegarLoop]: 12759 mSDtfsCounter, 31769 mSDsluCounter, 49635 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31769 SdHoareTripleChecker+Valid, 62394 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-12-25 22:44:37,113 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [31769 Valid, 62394 Invalid, 48 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-12-25 22:44:37,122 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14265 states.
[2023-12-25 22:44:37,362 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14265 to 7687.
[2023-12-25 22:44:37,369 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7687 states, 7686 states have (on average 1.6675774134790529) internal successors, (12817), 7686 states have internal predecessors, (12817), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:44:37,376 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7687 states to 7687 states and 12817 transitions.
[2023-12-25 22:44:37,376 INFO  L78                 Accepts]: Start accepts. Automaton has 7687 states and 12817 transitions. Word has length 5005
[2023-12-25 22:44:37,378 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 22:44:37,378 INFO  L495      AbstractCegarLoop]: Abstraction has 7687 states and 12817 transitions.
[2023-12-25 22:44:37,379 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 636.0) internal successors, (4452), 7 states have internal predecessors, (4452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:44:37,379 INFO  L276                IsEmpty]: Start isEmpty. Operand 7687 states and 12817 transitions.
[2023-12-25 22:44:37,502 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5007
[2023-12-25 22:44:37,502 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 22:44:37,505 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-12-25 22:44:37,569 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0
[2023-12-25 22:44:37,727 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 22:44:37,727 INFO  L420      AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 22:44:37,727 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 22:44:37,729 INFO  L85        PathProgramCache]: Analyzing trace with hash 1414349828, now seen corresponding path program 1 times
[2023-12-25 22:44:37,729 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 22:44:37,729 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1078594823]
[2023-12-25 22:44:37,729 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:44:37,729 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 22:44:38,040 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 22:44:38,040 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [556993674]
[2023-12-25 22:44:38,041 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:44:38,041 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 22:44:38,041 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 22:44:38,057 INFO  L229       MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-25 22:44:38,057 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process
[2023-12-25 22:44:43,299 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 22:44:43,432 INFO  L262         TraceCheckSpWp]: Trace formula consists of 22375 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-12-25 22:44:43,484 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 22:44:43,705 INFO  L134       CoverageAnalysis]: Checked inductivity of 572 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 552 trivial. 0 not checked.
[2023-12-25 22:44:43,705 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 22:44:43,705 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 22:44:43,705 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1078594823]
[2023-12-25 22:44:43,705 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 22:44:43,705 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [556993674]
[2023-12-25 22:44:43,705 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [556993674] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 22:44:43,706 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 22:44:43,706 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-12-25 22:44:43,706 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [508690035]
[2023-12-25 22:44:43,706 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 22:44:43,709 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-12-25 22:44:43,710 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 22:44:43,712 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-12-25 22:44:43,712 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-12-25 22:44:43,712 INFO  L87              Difference]: Start difference. First operand 7687 states and 12817 transitions. Second operand  has 7 states, 7 states have (on average 636.4285714285714) internal successors, (4455), 7 states have internal predecessors, (4455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:44:44,045 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 22:44:44,045 INFO  L93              Difference]: Finished difference Result 20888 states and 34831 transitions.
[2023-12-25 22:44:44,045 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-12-25 22:44:44,046 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 636.4285714285714) internal successors, (4455), 7 states have internal predecessors, (4455), 0 states have call successors, (0), 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 5006
[2023-12-25 22:44:44,049 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 22:44:44,062 INFO  L225             Difference]: With dead ends: 20888
[2023-12-25 22:44:44,062 INFO  L226             Difference]: Without dead ends: 14266
[2023-12-25 22:44:44,077 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5015 GetRequests, 5003 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-12-25 22:44:44,082 INFO  L413           NwaCegarLoop]: 12754 mSDtfsCounter, 31768 mSDsluCounter, 49620 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31768 SdHoareTripleChecker+Valid, 62374 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-12-25 22:44:44,082 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [31768 Valid, 62374 Invalid, 48 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-12-25 22:44:44,108 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14266 states.
[2023-12-25 22:44:44,182 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14266 to 7689.
[2023-12-25 22:44:44,188 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7689 states, 7688 states have (on average 1.6674037460978148) internal successors, (12819), 7688 states have internal predecessors, (12819), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:44:44,301 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7689 states to 7689 states and 12819 transitions.
[2023-12-25 22:44:44,301 INFO  L78                 Accepts]: Start accepts. Automaton has 7689 states and 12819 transitions. Word has length 5006
[2023-12-25 22:44:44,303 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 22:44:44,304 INFO  L495      AbstractCegarLoop]: Abstraction has 7689 states and 12819 transitions.
[2023-12-25 22:44:44,304 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 636.4285714285714) internal successors, (4455), 7 states have internal predecessors, (4455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:44:44,304 INFO  L276                IsEmpty]: Start isEmpty. Operand 7689 states and 12819 transitions.
[2023-12-25 22:44:44,427 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5008
[2023-12-25 22:44:44,427 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 22:44:44,436 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-12-25 22:44:44,494 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 22:44:44,657 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 22:44:44,657 INFO  L420      AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 22:44:44,658 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 22:44:44,659 INFO  L85        PathProgramCache]: Analyzing trace with hash -642754376, now seen corresponding path program 1 times
[2023-12-25 22:44:44,659 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 22:44:44,659 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1127445359]
[2023-12-25 22:44:44,659 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:44:44,659 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 22:44:44,955 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 22:44:44,955 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1613814465]
[2023-12-25 22:44:44,956 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:44:44,956 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 22:44:44,957 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 22:44:44,957 INFO  L229       MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-25 22:44:44,986 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process
[2023-12-25 22:44:50,133 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 22:44:50,259 INFO  L262         TraceCheckSpWp]: Trace formula consists of 22379 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-12-25 22:44:50,310 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 22:44:50,526 INFO  L134       CoverageAnalysis]: Checked inductivity of 572 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 550 trivial. 0 not checked.
[2023-12-25 22:44:50,526 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 22:44:50,526 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 22:44:50,526 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1127445359]
[2023-12-25 22:44:50,526 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 22:44:50,526 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1613814465]
[2023-12-25 22:44:50,526 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1613814465] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 22:44:50,526 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 22:44:50,527 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-12-25 22:44:50,527 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [326150004]
[2023-12-25 22:44:50,527 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 22:44:50,530 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-12-25 22:44:50,530 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 22:44:50,533 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-12-25 22:44:50,533 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-12-25 22:44:50,533 INFO  L87              Difference]: Start difference. First operand 7689 states and 12819 transitions. Second operand  has 7 states, 7 states have (on average 636.8571428571429) internal successors, (4458), 7 states have internal predecessors, (4458), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:44:50,990 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 22:44:50,990 INFO  L93              Difference]: Finished difference Result 20894 states and 34837 transitions.
[2023-12-25 22:44:50,990 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-12-25 22:44:50,991 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 636.8571428571429) internal successors, (4458), 7 states have internal predecessors, (4458), 0 states have call successors, (0), 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 5007
[2023-12-25 22:44:50,996 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 22:44:51,005 INFO  L225             Difference]: With dead ends: 20894
[2023-12-25 22:44:51,005 INFO  L226             Difference]: Without dead ends: 14267
[2023-12-25 22:44:51,008 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5016 GetRequests, 5004 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-12-25 22:44:51,015 INFO  L413           NwaCegarLoop]: 12749 mSDtfsCounter, 31767 mSDsluCounter, 49605 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31767 SdHoareTripleChecker+Valid, 62354 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-12-25 22:44:51,016 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [31767 Valid, 62354 Invalid, 48 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-12-25 22:44:51,025 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14267 states.
[2023-12-25 22:44:51,098 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14267 to 7691.
[2023-12-25 22:44:51,106 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7691 states, 7690 states have (on average 1.6672301690507152) internal successors, (12821), 7690 states have internal predecessors, (12821), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:44:51,115 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7691 states to 7691 states and 12821 transitions.
[2023-12-25 22:44:51,115 INFO  L78                 Accepts]: Start accepts. Automaton has 7691 states and 12821 transitions. Word has length 5007
[2023-12-25 22:44:51,117 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 22:44:51,118 INFO  L495      AbstractCegarLoop]: Abstraction has 7691 states and 12821 transitions.
[2023-12-25 22:44:51,118 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 636.8571428571429) internal successors, (4458), 7 states have internal predecessors, (4458), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:44:51,118 INFO  L276                IsEmpty]: Start isEmpty. Operand 7691 states and 12821 transitions.
[2023-12-25 22:44:51,246 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5009
[2023-12-25 22:44:51,247 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 22:44:51,249 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-12-25 22:44:51,314 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0
[2023-12-25 22:44:51,476 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 22:44:51,476 INFO  L420      AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 22:44:51,477 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 22:44:51,478 INFO  L85        PathProgramCache]: Analyzing trace with hash -1420173716, now seen corresponding path program 1 times
[2023-12-25 22:44:51,478 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 22:44:51,478 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1840971003]
[2023-12-25 22:44:51,478 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:44:51,478 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 22:44:51,788 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 22:44:51,788 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [602302516]
[2023-12-25 22:44:51,789 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:44:51,789 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 22:44:51,789 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 22:44:51,805 INFO  L229       MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-25 22:44:51,832 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process
[2023-12-25 22:44:56,825 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 22:44:56,956 INFO  L262         TraceCheckSpWp]: Trace formula consists of 22382 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-12-25 22:44:57,173 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 22:44:57,388 INFO  L134       CoverageAnalysis]: Checked inductivity of 572 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 548 trivial. 0 not checked.
[2023-12-25 22:44:57,388 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 22:44:57,388 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 22:44:57,388 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1840971003]
[2023-12-25 22:44:57,388 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 22:44:57,389 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [602302516]
[2023-12-25 22:44:57,389 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [602302516] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 22:44:57,389 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 22:44:57,389 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-12-25 22:44:57,389 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2081513126]
[2023-12-25 22:44:57,389 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 22:44:57,392 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-12-25 22:44:57,392 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 22:44:57,394 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-12-25 22:44:57,394 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-12-25 22:44:57,394 INFO  L87              Difference]: Start difference. First operand 7691 states and 12821 transitions. Second operand  has 7 states, 7 states have (on average 637.2857142857143) internal successors, (4461), 7 states have internal predecessors, (4461), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:44:57,713 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 22:44:57,713 INFO  L93              Difference]: Finished difference Result 20900 states and 34843 transitions.
[2023-12-25 22:44:57,713 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-12-25 22:44:57,714 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 637.2857142857143) internal successors, (4461), 7 states have internal predecessors, (4461), 0 states have call successors, (0), 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 5008
[2023-12-25 22:44:57,717 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 22:44:57,730 INFO  L225             Difference]: With dead ends: 20900
[2023-12-25 22:44:57,730 INFO  L226             Difference]: Without dead ends: 14268
[2023-12-25 22:44:57,738 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5017 GetRequests, 5005 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-12-25 22:44:57,738 INFO  L413           NwaCegarLoop]: 12744 mSDtfsCounter, 31766 mSDsluCounter, 49590 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31766 SdHoareTripleChecker+Valid, 62334 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-12-25 22:44:57,739 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [31766 Valid, 62334 Invalid, 48 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-12-25 22:44:57,748 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14268 states.
[2023-12-25 22:44:57,820 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14268 to 7693.
[2023-12-25 22:44:57,827 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7693 states, 7692 states have (on average 1.6670566822672908) internal successors, (12823), 7692 states have internal predecessors, (12823), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:44:57,835 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7693 states to 7693 states and 12823 transitions.
[2023-12-25 22:44:57,835 INFO  L78                 Accepts]: Start accepts. Automaton has 7693 states and 12823 transitions. Word has length 5008
[2023-12-25 22:44:57,837 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 22:44:57,838 INFO  L495      AbstractCegarLoop]: Abstraction has 7693 states and 12823 transitions.
[2023-12-25 22:44:57,838 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 637.2857142857143) internal successors, (4461), 7 states have internal predecessors, (4461), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:44:57,839 INFO  L276                IsEmpty]: Start isEmpty. Operand 7693 states and 12823 transitions.
[2023-12-25 22:44:58,035 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5010
[2023-12-25 22:44:58,035 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 22:44:58,037 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-12-25 22:44:58,099 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0
[2023-12-25 22:44:58,247 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 22:44:58,248 INFO  L420      AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 22:44:58,248 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 22:44:58,249 INFO  L85        PathProgramCache]: Analyzing trace with hash 997138898, now seen corresponding path program 1 times
[2023-12-25 22:44:58,249 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 22:44:58,249 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [117271943]
[2023-12-25 22:44:58,249 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:44:58,249 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 22:44:58,588 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 22:44:58,588 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [165261404]
[2023-12-25 22:44:58,589 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:44:58,589 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 22:44:58,589 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 22:44:58,592 INFO  L229       MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-25 22:44:58,593 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process
[2023-12-25 22:45:03,580 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 22:45:03,722 INFO  L262         TraceCheckSpWp]: Trace formula consists of 22385 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-12-25 22:45:03,778 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 22:45:03,992 INFO  L134       CoverageAnalysis]: Checked inductivity of 572 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 546 trivial. 0 not checked.
[2023-12-25 22:45:03,992 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 22:45:03,992 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 22:45:03,992 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [117271943]
[2023-12-25 22:45:03,992 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 22:45:03,992 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [165261404]
[2023-12-25 22:45:03,992 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [165261404] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 22:45:03,992 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 22:45:03,993 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-12-25 22:45:03,993 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [941400653]
[2023-12-25 22:45:03,993 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 22:45:03,995 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-12-25 22:45:03,995 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 22:45:03,997 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-12-25 22:45:03,997 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-12-25 22:45:03,998 INFO  L87              Difference]: Start difference. First operand 7693 states and 12823 transitions. Second operand  has 7 states, 7 states have (on average 637.7142857142857) internal successors, (4464), 7 states have internal predecessors, (4464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:45:04,334 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 22:45:04,334 INFO  L93              Difference]: Finished difference Result 20906 states and 34849 transitions.
[2023-12-25 22:45:04,335 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-12-25 22:45:04,336 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 637.7142857142857) internal successors, (4464), 7 states have internal predecessors, (4464), 0 states have call successors, (0), 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 5009
[2023-12-25 22:45:04,339 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 22:45:04,350 INFO  L225             Difference]: With dead ends: 20906
[2023-12-25 22:45:04,351 INFO  L226             Difference]: Without dead ends: 14269
[2023-12-25 22:45:04,359 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5018 GetRequests, 5006 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-12-25 22:45:04,359 INFO  L413           NwaCegarLoop]: 12739 mSDtfsCounter, 31765 mSDsluCounter, 49575 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31765 SdHoareTripleChecker+Valid, 62314 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-12-25 22:45:04,359 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [31765 Valid, 62314 Invalid, 48 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-12-25 22:45:04,369 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14269 states.
[2023-12-25 22:45:04,435 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14269 to 7695.
[2023-12-25 22:45:04,443 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7695 states, 7694 states have (on average 1.666883285677151) internal successors, (12825), 7694 states have internal predecessors, (12825), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:45:04,451 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7695 states to 7695 states and 12825 transitions.
[2023-12-25 22:45:04,451 INFO  L78                 Accepts]: Start accepts. Automaton has 7695 states and 12825 transitions. Word has length 5009
[2023-12-25 22:45:04,454 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 22:45:04,454 INFO  L495      AbstractCegarLoop]: Abstraction has 7695 states and 12825 transitions.
[2023-12-25 22:45:04,454 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 637.7142857142857) internal successors, (4464), 7 states have internal predecessors, (4464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:45:04,455 INFO  L276                IsEmpty]: Start isEmpty. Operand 7695 states and 12825 transitions.
[2023-12-25 22:45:04,576 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5011
[2023-12-25 22:45:04,576 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 22:45:04,577 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-12-25 22:45:04,635 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0
[2023-12-25 22:45:04,795 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 22:45:04,795 INFO  L420      AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 22:45:04,795 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 22:45:04,796 INFO  L85        PathProgramCache]: Analyzing trace with hash -1758922158, now seen corresponding path program 1 times
[2023-12-25 22:45:04,796 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 22:45:04,796 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [417277600]
[2023-12-25 22:45:04,796 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:45:04,797 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 22:45:05,140 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 22:45:05,140 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1494637755]
[2023-12-25 22:45:05,141 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:45:05,141 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 22:45:05,141 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 22:45:05,144 INFO  L229       MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-25 22:45:05,170 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process
[2023-12-25 22:45:10,065 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 22:45:10,208 INFO  L262         TraceCheckSpWp]: Trace formula consists of 22388 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-12-25 22:45:10,257 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 22:45:10,433 INFO  L134       CoverageAnalysis]: Checked inductivity of 572 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked.
[2023-12-25 22:45:10,433 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 22:45:10,433 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 22:45:10,433 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [417277600]
[2023-12-25 22:45:10,433 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 22:45:10,433 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1494637755]
[2023-12-25 22:45:10,433 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1494637755] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 22:45:10,433 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 22:45:10,434 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-12-25 22:45:10,434 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1019093499]
[2023-12-25 22:45:10,434 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 22:45:10,436 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-12-25 22:45:10,436 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 22:45:10,438 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-12-25 22:45:10,438 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-12-25 22:45:10,438 INFO  L87              Difference]: Start difference. First operand 7695 states and 12825 transitions. Second operand  has 7 states, 7 states have (on average 638.1428571428571) internal successors, (4467), 7 states have internal predecessors, (4467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:45:10,755 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 22:45:10,755 INFO  L93              Difference]: Finished difference Result 20912 states and 34855 transitions.
[2023-12-25 22:45:10,755 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-12-25 22:45:10,756 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 638.1428571428571) internal successors, (4467), 7 states have internal predecessors, (4467), 0 states have call successors, (0), 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 5010
[2023-12-25 22:45:10,759 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 22:45:10,771 INFO  L225             Difference]: With dead ends: 20912
[2023-12-25 22:45:10,771 INFO  L226             Difference]: Without dead ends: 14270
[2023-12-25 22:45:10,778 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5019 GetRequests, 5007 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-12-25 22:45:10,778 INFO  L413           NwaCegarLoop]: 12734 mSDtfsCounter, 31764 mSDsluCounter, 49560 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31764 SdHoareTripleChecker+Valid, 62294 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-12-25 22:45:10,778 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [31764 Valid, 62294 Invalid, 48 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-12-25 22:45:10,791 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14270 states.
[2023-12-25 22:45:10,861 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14270 to 7697.
[2023-12-25 22:45:10,868 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7697 states, 7696 states have (on average 1.6667099792099793) internal successors, (12827), 7696 states have internal predecessors, (12827), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:45:10,876 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7697 states to 7697 states and 12827 transitions.
[2023-12-25 22:45:10,876 INFO  L78                 Accepts]: Start accepts. Automaton has 7697 states and 12827 transitions. Word has length 5010
[2023-12-25 22:45:10,879 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 22:45:10,879 INFO  L495      AbstractCegarLoop]: Abstraction has 7697 states and 12827 transitions.
[2023-12-25 22:45:10,880 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 638.1428571428571) internal successors, (4467), 7 states have internal predecessors, (4467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:45:10,880 INFO  L276                IsEmpty]: Start isEmpty. Operand 7697 states and 12827 transitions.
[2023-12-25 22:45:11,003 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5012
[2023-12-25 22:45:11,003 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 22:45:11,005 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-12-25 22:45:11,067 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0
[2023-12-25 22:45:11,224 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 22:45:11,224 INFO  L420      AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 22:45:11,225 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 22:45:11,226 INFO  L85        PathProgramCache]: Analyzing trace with hash -1981462930, now seen corresponding path program 1 times
[2023-12-25 22:45:11,226 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 22:45:11,226 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1397990209]
[2023-12-25 22:45:11,226 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:45:11,226 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 22:45:11,648 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 22:45:11,648 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [290931203]
[2023-12-25 22:45:11,649 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:45:11,649 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 22:45:11,649 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 22:45:11,651 INFO  L229       MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-25 22:45:11,690 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process
[2023-12-25 22:45:16,449 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 22:45:16,577 INFO  L262         TraceCheckSpWp]: Trace formula consists of 22392 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-12-25 22:45:16,624 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 22:45:16,804 INFO  L134       CoverageAnalysis]: Checked inductivity of 572 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 542 trivial. 0 not checked.
[2023-12-25 22:45:16,804 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 22:45:16,804 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 22:45:16,804 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1397990209]
[2023-12-25 22:45:16,805 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 22:45:16,805 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [290931203]
[2023-12-25 22:45:16,805 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [290931203] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 22:45:16,805 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 22:45:16,805 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-12-25 22:45:16,805 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1290015066]
[2023-12-25 22:45:16,805 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 22:45:16,807 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-12-25 22:45:16,807 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 22:45:16,809 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-12-25 22:45:16,809 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-12-25 22:45:16,809 INFO  L87              Difference]: Start difference. First operand 7697 states and 12827 transitions. Second operand  has 7 states, 7 states have (on average 638.5714285714286) internal successors, (4470), 7 states have internal predecessors, (4470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:45:17,121 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 22:45:17,121 INFO  L93              Difference]: Finished difference Result 20918 states and 34861 transitions.
[2023-12-25 22:45:17,121 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-12-25 22:45:17,122 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 638.5714285714286) internal successors, (4470), 7 states have internal predecessors, (4470), 0 states have call successors, (0), 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 5011
[2023-12-25 22:45:17,125 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 22:45:17,137 INFO  L225             Difference]: With dead ends: 20918
[2023-12-25 22:45:17,137 INFO  L226             Difference]: Without dead ends: 14271
[2023-12-25 22:45:17,143 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5020 GetRequests, 5008 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-12-25 22:45:17,144 INFO  L413           NwaCegarLoop]: 12729 mSDtfsCounter, 31763 mSDsluCounter, 49545 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31763 SdHoareTripleChecker+Valid, 62274 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-12-25 22:45:17,144 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [31763 Valid, 62274 Invalid, 48 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-12-25 22:45:17,152 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14271 states.
[2023-12-25 22:45:17,211 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14271 to 7699.
[2023-12-25 22:45:17,216 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7699 states, 7698 states have (on average 1.6665367627955312) internal successors, (12829), 7698 states have internal predecessors, (12829), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:45:17,222 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7699 states to 7699 states and 12829 transitions.
[2023-12-25 22:45:17,223 INFO  L78                 Accepts]: Start accepts. Automaton has 7699 states and 12829 transitions. Word has length 5011
[2023-12-25 22:45:17,225 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 22:45:17,225 INFO  L495      AbstractCegarLoop]: Abstraction has 7699 states and 12829 transitions.
[2023-12-25 22:45:17,226 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 638.5714285714286) internal successors, (4470), 7 states have internal predecessors, (4470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:45:17,226 INFO  L276                IsEmpty]: Start isEmpty. Operand 7699 states and 12829 transitions.
[2023-12-25 22:45:17,346 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5013
[2023-12-25 22:45:17,346 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 22:45:17,347 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-12-25 22:45:17,405 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 22:45:17,572 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 22:45:17,572 INFO  L420      AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 22:45:17,573 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 22:45:17,573 INFO  L85        PathProgramCache]: Analyzing trace with hash -1708268102, now seen corresponding path program 1 times
[2023-12-25 22:45:17,573 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 22:45:17,573 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [351131658]
[2023-12-25 22:45:17,574 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:45:17,574 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 22:45:17,884 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 22:45:17,884 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [570676966]
[2023-12-25 22:45:17,885 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:45:17,885 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 22:45:17,885 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 22:45:17,886 INFO  L229       MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-25 22:45:17,890 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process
[2023-12-25 22:45:23,186 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 22:45:23,336 INFO  L262         TraceCheckSpWp]: Trace formula consists of 22395 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-12-25 22:45:23,385 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 22:45:23,595 INFO  L134       CoverageAnalysis]: Checked inductivity of 572 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 540 trivial. 0 not checked.
[2023-12-25 22:45:23,595 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 22:45:23,595 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 22:45:23,595 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [351131658]
[2023-12-25 22:45:23,595 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 22:45:23,595 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [570676966]
[2023-12-25 22:45:23,595 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [570676966] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 22:45:23,595 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 22:45:23,596 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-12-25 22:45:23,596 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1609536111]
[2023-12-25 22:45:23,596 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 22:45:23,598 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-12-25 22:45:23,598 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 22:45:23,600 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-12-25 22:45:23,600 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-12-25 22:45:23,601 INFO  L87              Difference]: Start difference. First operand 7699 states and 12829 transitions. Second operand  has 7 states, 7 states have (on average 639.0) internal successors, (4473), 7 states have internal predecessors, (4473), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:45:23,941 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 22:45:23,941 INFO  L93              Difference]: Finished difference Result 20924 states and 34867 transitions.
[2023-12-25 22:45:23,941 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-12-25 22:45:23,942 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 639.0) internal successors, (4473), 7 states have internal predecessors, (4473), 0 states have call successors, (0), 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 5012
[2023-12-25 22:45:23,945 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 22:45:23,960 INFO  L225             Difference]: With dead ends: 20924
[2023-12-25 22:45:23,960 INFO  L226             Difference]: Without dead ends: 14272
[2023-12-25 22:45:23,969 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5021 GetRequests, 5009 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-12-25 22:45:23,969 INFO  L413           NwaCegarLoop]: 12724 mSDtfsCounter, 31762 mSDsluCounter, 49530 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31762 SdHoareTripleChecker+Valid, 62254 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-12-25 22:45:23,970 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [31762 Valid, 62254 Invalid, 48 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-12-25 22:45:23,981 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14272 states.
[2023-12-25 22:45:24,046 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14272 to 7701.
[2023-12-25 22:45:24,052 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7701 states, 7700 states have (on average 1.6663636363636363) internal successors, (12831), 7700 states have internal predecessors, (12831), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:45:24,058 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7701 states to 7701 states and 12831 transitions.
[2023-12-25 22:45:24,058 INFO  L78                 Accepts]: Start accepts. Automaton has 7701 states and 12831 transitions. Word has length 5012
[2023-12-25 22:45:24,060 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 22:45:24,061 INFO  L495      AbstractCegarLoop]: Abstraction has 7701 states and 12831 transitions.
[2023-12-25 22:45:24,061 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 639.0) internal successors, (4473), 7 states have internal predecessors, (4473), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:45:24,061 INFO  L276                IsEmpty]: Start isEmpty. Operand 7701 states and 12831 transitions.
[2023-12-25 22:45:24,294 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5014
[2023-12-25 22:45:24,294 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 22:45:24,296 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-12-25 22:45:24,358 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 22:45:24,520 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 22:45:24,520 INFO  L420      AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 22:45:24,521 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 22:45:24,522 INFO  L85        PathProgramCache]: Analyzing trace with hash 198060936, now seen corresponding path program 1 times
[2023-12-25 22:45:24,522 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 22:45:24,522 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [900157808]
[2023-12-25 22:45:24,522 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:45:24,522 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 22:45:24,833 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 22:45:24,833 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1229566549]
[2023-12-25 22:45:24,834 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:45:24,834 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 22:45:24,834 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 22:45:24,835 INFO  L229       MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-25 22:45:24,852 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process
[2023-12-25 22:45:30,118 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 22:45:30,264 INFO  L262         TraceCheckSpWp]: Trace formula consists of 22398 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-12-25 22:45:30,321 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 22:45:30,524 INFO  L134       CoverageAnalysis]: Checked inductivity of 572 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 538 trivial. 0 not checked.
[2023-12-25 22:45:30,524 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 22:45:30,524 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 22:45:30,524 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [900157808]
[2023-12-25 22:45:30,525 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 22:45:30,525 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1229566549]
[2023-12-25 22:45:30,525 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1229566549] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 22:45:30,525 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 22:45:30,525 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-12-25 22:45:30,525 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [615266167]
[2023-12-25 22:45:30,525 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 22:45:30,528 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-12-25 22:45:30,528 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 22:45:30,530 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-12-25 22:45:30,530 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-12-25 22:45:30,530 INFO  L87              Difference]: Start difference. First operand 7701 states and 12831 transitions. Second operand  has 7 states, 7 states have (on average 639.4285714285714) internal successors, (4476), 7 states have internal predecessors, (4476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:45:30,873 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 22:45:30,873 INFO  L93              Difference]: Finished difference Result 20930 states and 34873 transitions.
[2023-12-25 22:45:30,873 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-12-25 22:45:30,875 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 639.4285714285714) internal successors, (4476), 7 states have internal predecessors, (4476), 0 states have call successors, (0), 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 5013
[2023-12-25 22:45:30,878 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 22:45:30,894 INFO  L225             Difference]: With dead ends: 20930
[2023-12-25 22:45:30,895 INFO  L226             Difference]: Without dead ends: 14273
[2023-12-25 22:45:30,905 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5022 GetRequests, 5010 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-12-25 22:45:30,905 INFO  L413           NwaCegarLoop]: 12719 mSDtfsCounter, 31761 mSDsluCounter, 49515 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31761 SdHoareTripleChecker+Valid, 62234 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-12-25 22:45:30,906 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [31761 Valid, 62234 Invalid, 48 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-12-25 22:45:30,916 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14273 states.
[2023-12-25 22:45:30,983 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14273 to 7703.
[2023-12-25 22:45:30,988 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7703 states, 7702 states have (on average 1.6661905998441964) internal successors, (12833), 7702 states have internal predecessors, (12833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:45:30,994 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7703 states to 7703 states and 12833 transitions.
[2023-12-25 22:45:30,994 INFO  L78                 Accepts]: Start accepts. Automaton has 7703 states and 12833 transitions. Word has length 5013
[2023-12-25 22:45:30,997 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 22:45:30,997 INFO  L495      AbstractCegarLoop]: Abstraction has 7703 states and 12833 transitions.
[2023-12-25 22:45:30,998 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 639.4285714285714) internal successors, (4476), 7 states have internal predecessors, (4476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:45:30,998 INFO  L276                IsEmpty]: Start isEmpty. Operand 7703 states and 12833 transitions.
[2023-12-25 22:45:31,120 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5015
[2023-12-25 22:45:31,120 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 22:45:31,121 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-12-25 22:45:31,183 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0
[2023-12-25 22:45:31,333 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 22:45:31,334 INFO  L420      AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 22:45:31,335 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 22:45:31,335 INFO  L85        PathProgramCache]: Analyzing trace with hash 658621856, now seen corresponding path program 1 times
[2023-12-25 22:45:31,335 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 22:45:31,335 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [193806083]
[2023-12-25 22:45:31,336 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:45:31,336 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 22:45:31,677 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 22:45:31,677 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [703721527]
[2023-12-25 22:45:31,678 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:45:31,678 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 22:45:31,678 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 22:45:31,680 INFO  L229       MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-25 22:45:31,686 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process
[2023-12-25 22:45:36,727 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 22:45:36,865 INFO  L262         TraceCheckSpWp]: Trace formula consists of 22401 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-12-25 22:45:36,922 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 22:45:37,110 INFO  L134       CoverageAnalysis]: Checked inductivity of 572 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 536 trivial. 0 not checked.
[2023-12-25 22:45:37,110 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 22:45:37,110 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 22:45:37,110 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [193806083]
[2023-12-25 22:45:37,110 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 22:45:37,110 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [703721527]
[2023-12-25 22:45:37,110 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [703721527] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 22:45:37,110 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 22:45:37,111 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-12-25 22:45:37,111 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [577292988]
[2023-12-25 22:45:37,111 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 22:45:37,113 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-12-25 22:45:37,113 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 22:45:37,115 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-12-25 22:45:37,115 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-12-25 22:45:37,115 INFO  L87              Difference]: Start difference. First operand 7703 states and 12833 transitions. Second operand  has 7 states, 7 states have (on average 639.8571428571429) internal successors, (4479), 7 states have internal predecessors, (4479), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:45:37,439 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 22:45:37,439 INFO  L93              Difference]: Finished difference Result 20936 states and 34879 transitions.
[2023-12-25 22:45:37,440 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-12-25 22:45:37,442 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 639.8571428571429) internal successors, (4479), 7 states have internal predecessors, (4479), 0 states have call successors, (0), 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 5014
[2023-12-25 22:45:37,445 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 22:45:37,459 INFO  L225             Difference]: With dead ends: 20936
[2023-12-25 22:45:37,459 INFO  L226             Difference]: Without dead ends: 14274
[2023-12-25 22:45:37,467 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5023 GetRequests, 5011 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-12-25 22:45:37,468 INFO  L413           NwaCegarLoop]: 12714 mSDtfsCounter, 31760 mSDsluCounter, 49500 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31760 SdHoareTripleChecker+Valid, 62214 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-12-25 22:45:37,468 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [31760 Valid, 62214 Invalid, 48 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-12-25 22:45:37,478 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14274 states.
[2023-12-25 22:45:37,545 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14274 to 7705.
[2023-12-25 22:45:37,552 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7705 states, 7704 states have (on average 1.666017653167186) internal successors, (12835), 7704 states have internal predecessors, (12835), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:45:37,561 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7705 states to 7705 states and 12835 transitions.
[2023-12-25 22:45:37,561 INFO  L78                 Accepts]: Start accepts. Automaton has 7705 states and 12835 transitions. Word has length 5014
[2023-12-25 22:45:37,565 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 22:45:37,565 INFO  L495      AbstractCegarLoop]: Abstraction has 7705 states and 12835 transitions.
[2023-12-25 22:45:37,566 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 639.8571428571429) internal successors, (4479), 7 states have internal predecessors, (4479), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:45:37,566 INFO  L276                IsEmpty]: Start isEmpty. Operand 7705 states and 12835 transitions.
[2023-12-25 22:45:37,826 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5016
[2023-12-25 22:45:37,826 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 22:45:37,828 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-12-25 22:45:37,890 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 22:45:38,050 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 22:45:38,051 INFO  L420      AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 22:45:38,051 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 22:45:38,052 INFO  L85        PathProgramCache]: Analyzing trace with hash -447317724, now seen corresponding path program 1 times
[2023-12-25 22:45:38,052 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 22:45:38,052 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1376945274]
[2023-12-25 22:45:38,053 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:45:38,053 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 22:45:38,378 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 22:45:38,378 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [310429161]
[2023-12-25 22:45:38,379 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:45:38,379 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 22:45:38,380 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 22:45:38,380 INFO  L229       MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-25 22:45:38,411 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process
[2023-12-25 22:45:43,425 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 22:45:43,569 INFO  L262         TraceCheckSpWp]: Trace formula consists of 22405 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-12-25 22:45:43,622 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 22:45:43,804 INFO  L134       CoverageAnalysis]: Checked inductivity of 572 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 534 trivial. 0 not checked.
[2023-12-25 22:45:43,805 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 22:45:43,805 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 22:45:43,805 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1376945274]
[2023-12-25 22:45:43,805 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 22:45:43,805 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [310429161]
[2023-12-25 22:45:43,805 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [310429161] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 22:45:43,805 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 22:45:43,805 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-12-25 22:45:43,805 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1014270930]
[2023-12-25 22:45:43,806 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 22:45:43,808 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-12-25 22:45:43,808 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 22:45:43,810 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-12-25 22:45:43,810 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-12-25 22:45:43,810 INFO  L87              Difference]: Start difference. First operand 7705 states and 12835 transitions. Second operand  has 7 states, 7 states have (on average 640.2857142857143) internal successors, (4482), 7 states have internal predecessors, (4482), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:45:44,135 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 22:45:44,135 INFO  L93              Difference]: Finished difference Result 20942 states and 34885 transitions.
[2023-12-25 22:45:44,135 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-12-25 22:45:44,137 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 640.2857142857143) internal successors, (4482), 7 states have internal predecessors, (4482), 0 states have call successors, (0), 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 5015
[2023-12-25 22:45:44,139 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 22:45:44,151 INFO  L225             Difference]: With dead ends: 20942
[2023-12-25 22:45:44,152 INFO  L226             Difference]: Without dead ends: 14275
[2023-12-25 22:45:44,159 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5024 GetRequests, 5012 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-12-25 22:45:44,159 INFO  L413           NwaCegarLoop]: 12709 mSDtfsCounter, 31759 mSDsluCounter, 49485 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31759 SdHoareTripleChecker+Valid, 62194 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-12-25 22:45:44,159 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [31759 Valid, 62194 Invalid, 48 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-12-25 22:45:44,168 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14275 states.
[2023-12-25 22:45:44,228 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14275 to 7707.
[2023-12-25 22:45:44,233 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7707 states, 7706 states have (on average 1.6658447962626526) internal successors, (12837), 7706 states have internal predecessors, (12837), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:45:44,239 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7707 states to 7707 states and 12837 transitions.
[2023-12-25 22:45:44,239 INFO  L78                 Accepts]: Start accepts. Automaton has 7707 states and 12837 transitions. Word has length 5015
[2023-12-25 22:45:44,241 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 22:45:44,241 INFO  L495      AbstractCegarLoop]: Abstraction has 7707 states and 12837 transitions.
[2023-12-25 22:45:44,242 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 640.2857142857143) internal successors, (4482), 7 states have internal predecessors, (4482), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:45:44,242 INFO  L276                IsEmpty]: Start isEmpty. Operand 7707 states and 12837 transitions.
[2023-12-25 22:45:44,364 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5017
[2023-12-25 22:45:44,364 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 22:45:44,365 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 22:45:44,431 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0
[2023-12-25 22:45:44,586 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 22:45:44,586 INFO  L420      AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 22:45:44,587 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 22:45:44,590 INFO  L85        PathProgramCache]: Analyzing trace with hash 321847816, now seen corresponding path program 1 times
[2023-12-25 22:45:44,590 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 22:45:44,590 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [902266070]
[2023-12-25 22:45:44,591 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:45:44,591 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 22:45:44,900 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 22:45:44,900 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1818832107]
[2023-12-25 22:45:44,901 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:45:44,901 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 22:45:44,902 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 22:45:44,903 INFO  L229       MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-25 22:45:44,903 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process
[2023-12-25 22:45:50,023 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 22:45:50,160 INFO  L262         TraceCheckSpWp]: Trace formula consists of 22408 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-12-25 22:45:50,210 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 22:45:50,600 INFO  L134       CoverageAnalysis]: Checked inductivity of 572 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 532 trivial. 0 not checked.
[2023-12-25 22:45:50,601 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 22:45:50,601 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 22:45:50,601 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [902266070]
[2023-12-25 22:45:50,601 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 22:45:50,601 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1818832107]
[2023-12-25 22:45:50,601 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1818832107] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 22:45:50,601 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 22:45:50,601 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-12-25 22:45:50,601 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1078154956]
[2023-12-25 22:45:50,601 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 22:45:50,604 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-12-25 22:45:50,604 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 22:45:50,605 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-12-25 22:45:50,606 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-12-25 22:45:50,606 INFO  L87              Difference]: Start difference. First operand 7707 states and 12837 transitions. Second operand  has 7 states, 7 states have (on average 640.7142857142857) internal successors, (4485), 7 states have internal predecessors, (4485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:45:50,928 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 22:45:50,928 INFO  L93              Difference]: Finished difference Result 20948 states and 34891 transitions.
[2023-12-25 22:45:50,929 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-12-25 22:45:50,930 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 640.7142857142857) internal successors, (4485), 7 states have internal predecessors, (4485), 0 states have call successors, (0), 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 5016
[2023-12-25 22:45:50,932 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 22:45:50,945 INFO  L225             Difference]: With dead ends: 20948
[2023-12-25 22:45:50,945 INFO  L226             Difference]: Without dead ends: 14276
[2023-12-25 22:45:50,952 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5025 GetRequests, 5013 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-12-25 22:45:50,952 INFO  L413           NwaCegarLoop]: 12704 mSDtfsCounter, 31758 mSDsluCounter, 49470 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31758 SdHoareTripleChecker+Valid, 62174 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-12-25 22:45:50,953 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [31758 Valid, 62174 Invalid, 48 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-12-25 22:45:50,963 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14276 states.
[2023-12-25 22:45:51,026 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14276 to 7709.
[2023-12-25 22:45:51,032 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7709 states, 7708 states have (on average 1.665672029060716) internal successors, (12839), 7708 states have internal predecessors, (12839), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:45:51,039 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7709 states to 7709 states and 12839 transitions.
[2023-12-25 22:45:51,039 INFO  L78                 Accepts]: Start accepts. Automaton has 7709 states and 12839 transitions. Word has length 5016
[2023-12-25 22:45:51,042 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 22:45:51,042 INFO  L495      AbstractCegarLoop]: Abstraction has 7709 states and 12839 transitions.
[2023-12-25 22:45:51,043 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 640.7142857142857) internal successors, (4485), 7 states have internal predecessors, (4485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:45:51,043 INFO  L276                IsEmpty]: Start isEmpty. Operand 7709 states and 12839 transitions.
[2023-12-25 22:45:51,164 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5018
[2023-12-25 22:45:51,164 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 22:45:51,165 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-12-25 22:45:51,225 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 22:45:51,382 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 22:45:51,382 INFO  L420      AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 22:45:51,383 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 22:45:51,383 INFO  L85        PathProgramCache]: Analyzing trace with hash 1835924030, now seen corresponding path program 1 times
[2023-12-25 22:45:51,383 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 22:45:51,383 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [688883272]
[2023-12-25 22:45:51,383 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:45:51,384 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 22:45:51,678 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 22:45:51,678 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [346634731]
[2023-12-25 22:45:51,679 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:45:51,679 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 22:45:51,679 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 22:45:51,680 INFO  L229       MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-25 22:45:51,682 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process
[2023-12-25 22:45:56,763 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 22:45:56,900 INFO  L262         TraceCheckSpWp]: Trace formula consists of 22411 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-12-25 22:45:56,954 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 22:45:57,172 INFO  L134       CoverageAnalysis]: Checked inductivity of 572 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 530 trivial. 0 not checked.
[2023-12-25 22:45:57,173 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 22:45:57,173 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 22:45:57,174 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [688883272]
[2023-12-25 22:45:57,174 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 22:45:57,174 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [346634731]
[2023-12-25 22:45:57,174 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [346634731] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 22:45:57,174 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 22:45:57,174 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-12-25 22:45:57,174 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [839679304]
[2023-12-25 22:45:57,175 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 22:45:57,177 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-12-25 22:45:57,177 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 22:45:57,179 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-12-25 22:45:57,179 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-12-25 22:45:57,179 INFO  L87              Difference]: Start difference. First operand 7709 states and 12839 transitions. Second operand  has 7 states, 7 states have (on average 641.1428571428571) internal successors, (4488), 7 states have internal predecessors, (4488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:45:57,732 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 22:45:57,732 INFO  L93              Difference]: Finished difference Result 20954 states and 34897 transitions.
[2023-12-25 22:45:57,734 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-12-25 22:45:57,735 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 641.1428571428571) internal successors, (4488), 7 states have internal predecessors, (4488), 0 states have call successors, (0), 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 5017
[2023-12-25 22:45:57,738 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 22:45:57,747 INFO  L225             Difference]: With dead ends: 20954
[2023-12-25 22:45:57,747 INFO  L226             Difference]: Without dead ends: 14277
[2023-12-25 22:45:57,751 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5026 GetRequests, 5014 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-12-25 22:45:57,751 INFO  L413           NwaCegarLoop]: 12699 mSDtfsCounter, 31757 mSDsluCounter, 49455 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31757 SdHoareTripleChecker+Valid, 62154 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.3s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-12-25 22:45:57,752 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [31757 Valid, 62154 Invalid, 48 Unknown, 0 Unchecked, 0.3s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-12-25 22:45:57,759 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14277 states.
[2023-12-25 22:45:57,816 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14277 to 7711.
[2023-12-25 22:45:57,824 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7711 states, 7710 states have (on average 1.6654993514915695) internal successors, (12841), 7710 states have internal predecessors, (12841), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:45:57,833 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7711 states to 7711 states and 12841 transitions.
[2023-12-25 22:45:57,833 INFO  L78                 Accepts]: Start accepts. Automaton has 7711 states and 12841 transitions. Word has length 5017
[2023-12-25 22:45:57,836 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 22:45:57,836 INFO  L495      AbstractCegarLoop]: Abstraction has 7711 states and 12841 transitions.
[2023-12-25 22:45:57,837 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 641.1428571428571) internal successors, (4488), 7 states have internal predecessors, (4488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:45:57,837 INFO  L276                IsEmpty]: Start isEmpty. Operand 7711 states and 12841 transitions.
[2023-12-25 22:45:57,964 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5019
[2023-12-25 22:45:57,964 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 22:45:57,965 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-12-25 22:45:58,038 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0
[2023-12-25 22:45:58,187 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 22:45:58,187 INFO  L420      AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 22:45:58,188 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 22:45:58,188 INFO  L85        PathProgramCache]: Analyzing trace with hash 1443046894, now seen corresponding path program 1 times
[2023-12-25 22:45:58,188 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 22:45:58,188 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1802407666]
[2023-12-25 22:45:58,189 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:45:58,189 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 22:45:58,566 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 22:45:58,567 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1500858374]
[2023-12-25 22:45:58,568 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:45:58,568 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 22:45:58,568 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 22:45:58,569 INFO  L229       MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-25 22:45:58,572 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process
[2023-12-25 22:46:03,341 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 22:46:03,477 INFO  L262         TraceCheckSpWp]: Trace formula consists of 22414 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-12-25 22:46:03,525 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 22:46:03,723 INFO  L134       CoverageAnalysis]: Checked inductivity of 572 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 528 trivial. 0 not checked.
[2023-12-25 22:46:03,723 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 22:46:03,723 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 22:46:03,723 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1802407666]
[2023-12-25 22:46:03,723 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 22:46:03,723 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1500858374]
[2023-12-25 22:46:03,723 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1500858374] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 22:46:03,723 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 22:46:03,724 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-12-25 22:46:03,724 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1849799770]
[2023-12-25 22:46:03,724 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 22:46:03,726 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-12-25 22:46:03,726 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 22:46:03,728 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-12-25 22:46:03,728 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-12-25 22:46:03,728 INFO  L87              Difference]: Start difference. First operand 7711 states and 12841 transitions. Second operand  has 7 states, 7 states have (on average 641.5714285714286) internal successors, (4491), 7 states have internal predecessors, (4491), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:46:04,067 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 22:46:04,068 INFO  L93              Difference]: Finished difference Result 20960 states and 34903 transitions.
[2023-12-25 22:46:04,068 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-12-25 22:46:04,069 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 641.5714285714286) internal successors, (4491), 7 states have internal predecessors, (4491), 0 states have call successors, (0), 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 5018
[2023-12-25 22:46:04,072 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 22:46:04,086 INFO  L225             Difference]: With dead ends: 20960
[2023-12-25 22:46:04,086 INFO  L226             Difference]: Without dead ends: 14278
[2023-12-25 22:46:04,094 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5027 GetRequests, 5015 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-12-25 22:46:04,094 INFO  L413           NwaCegarLoop]: 12694 mSDtfsCounter, 31756 mSDsluCounter, 49440 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31756 SdHoareTripleChecker+Valid, 62134 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-12-25 22:46:04,096 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [31756 Valid, 62134 Invalid, 48 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-12-25 22:46:04,109 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14278 states.
[2023-12-25 22:46:04,176 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14278 to 7713.
[2023-12-25 22:46:04,182 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7713 states, 7712 states have (on average 1.6653267634854771) internal successors, (12843), 7712 states have internal predecessors, (12843), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:46:04,190 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7713 states to 7713 states and 12843 transitions.
[2023-12-25 22:46:04,190 INFO  L78                 Accepts]: Start accepts. Automaton has 7713 states and 12843 transitions. Word has length 5018
[2023-12-25 22:46:04,192 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 22:46:04,192 INFO  L495      AbstractCegarLoop]: Abstraction has 7713 states and 12843 transitions.
[2023-12-25 22:46:04,193 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 641.5714285714286) internal successors, (4491), 7 states have internal predecessors, (4491), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:46:04,193 INFO  L276                IsEmpty]: Start isEmpty. Operand 7713 states and 12843 transitions.
[2023-12-25 22:46:04,318 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5020
[2023-12-25 22:46:04,318 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 22:46:04,319 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-12-25 22:46:04,380 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 22:46:04,531 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 22:46:04,532 INFO  L420      AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 22:46:04,532 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 22:46:04,533 INFO  L85        PathProgramCache]: Analyzing trace with hash 1774285018, now seen corresponding path program 1 times
[2023-12-25 22:46:04,533 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 22:46:04,533 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1782597912]
[2023-12-25 22:46:04,533 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:46:04,533 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 22:46:04,838 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 22:46:04,839 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1495500584]
[2023-12-25 22:46:04,840 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:46:04,840 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 22:46:04,840 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 22:46:04,855 INFO  L229       MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-25 22:46:04,899 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process
[2023-12-25 22:46:10,202 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 22:46:10,331 INFO  L262         TraceCheckSpWp]: Trace formula consists of 22418 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-12-25 22:46:10,375 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 22:46:10,574 INFO  L134       CoverageAnalysis]: Checked inductivity of 572 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 526 trivial. 0 not checked.
[2023-12-25 22:46:10,574 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 22:46:10,574 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 22:46:10,574 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1782597912]
[2023-12-25 22:46:10,574 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 22:46:10,574 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1495500584]
[2023-12-25 22:46:10,574 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1495500584] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 22:46:10,574 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 22:46:10,575 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-12-25 22:46:10,575 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [686062862]
[2023-12-25 22:46:10,575 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 22:46:10,577 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-12-25 22:46:10,577 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 22:46:10,579 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-12-25 22:46:10,579 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-12-25 22:46:10,579 INFO  L87              Difference]: Start difference. First operand 7713 states and 12843 transitions. Second operand  has 7 states, 7 states have (on average 642.0) internal successors, (4494), 7 states have internal predecessors, (4494), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:46:10,973 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 22:46:10,973 INFO  L93              Difference]: Finished difference Result 20966 states and 34909 transitions.
[2023-12-25 22:46:10,973 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-12-25 22:46:10,974 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 642.0) internal successors, (4494), 7 states have internal predecessors, (4494), 0 states have call successors, (0), 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 5019
[2023-12-25 22:46:10,977 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 22:46:10,985 INFO  L225             Difference]: With dead ends: 20966
[2023-12-25 22:46:10,986 INFO  L226             Difference]: Without dead ends: 14279
[2023-12-25 22:46:10,989 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5028 GetRequests, 5016 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-12-25 22:46:10,990 INFO  L413           NwaCegarLoop]: 12689 mSDtfsCounter, 31755 mSDsluCounter, 49425 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31755 SdHoareTripleChecker+Valid, 62114 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-12-25 22:46:10,990 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [31755 Valid, 62114 Invalid, 48 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-12-25 22:46:10,999 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14279 states.
[2023-12-25 22:46:11,059 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14279 to 7715.
[2023-12-25 22:46:11,064 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7715 states, 7714 states have (on average 1.6651542649727769) internal successors, (12845), 7714 states have internal predecessors, (12845), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:46:11,071 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7715 states to 7715 states and 12845 transitions.
[2023-12-25 22:46:11,071 INFO  L78                 Accepts]: Start accepts. Automaton has 7715 states and 12845 transitions. Word has length 5019
[2023-12-25 22:46:11,073 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 22:46:11,073 INFO  L495      AbstractCegarLoop]: Abstraction has 7715 states and 12845 transitions.
[2023-12-25 22:46:11,074 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 642.0) internal successors, (4494), 7 states have internal predecessors, (4494), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:46:11,074 INFO  L276                IsEmpty]: Start isEmpty. Operand 7715 states and 12845 transitions.
[2023-12-25 22:46:11,194 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5021
[2023-12-25 22:46:11,195 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 22:46:11,196 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-12-25 22:46:11,255 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0
[2023-12-25 22:46:11,413 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 22:46:11,414 INFO  L420      AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 22:46:11,414 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 22:46:11,414 INFO  L85        PathProgramCache]: Analyzing trace with hash -1291275434, now seen corresponding path program 1 times
[2023-12-25 22:46:11,414 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 22:46:11,414 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1172716203]
[2023-12-25 22:46:11,415 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:46:11,415 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 22:46:11,758 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 22:46:11,758 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1913101025]
[2023-12-25 22:46:11,759 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:46:11,759 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 22:46:11,760 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 22:46:11,760 INFO  L229       MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-25 22:46:11,761 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process
[2023-12-25 22:46:16,883 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 22:46:17,021 INFO  L262         TraceCheckSpWp]: Trace formula consists of 22421 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-12-25 22:46:17,068 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 22:46:17,265 INFO  L134       CoverageAnalysis]: Checked inductivity of 572 backedges. 50 proven. 0 refuted. 0 times theorem prover too weak. 522 trivial. 0 not checked.
[2023-12-25 22:46:17,265 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 22:46:17,265 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 22:46:17,265 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1172716203]
[2023-12-25 22:46:17,265 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 22:46:17,265 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1913101025]
[2023-12-25 22:46:17,265 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1913101025] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 22:46:17,265 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 22:46:17,266 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-12-25 22:46:17,266 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1178710893]
[2023-12-25 22:46:17,266 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 22:46:17,269 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-12-25 22:46:17,269 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 22:46:17,270 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-12-25 22:46:17,271 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-12-25 22:46:17,271 INFO  L87              Difference]: Start difference. First operand 7715 states and 12845 transitions. Second operand  has 7 states, 7 states have (on average 642.7142857142857) internal successors, (4499), 7 states have internal predecessors, (4499), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:46:17,711 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 22:46:17,711 INFO  L93              Difference]: Finished difference Result 20975 states and 34920 transitions.
[2023-12-25 22:46:17,712 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-12-25 22:46:17,713 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 642.7142857142857) internal successors, (4499), 7 states have internal predecessors, (4499), 0 states have call successors, (0), 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 5020
[2023-12-25 22:46:17,715 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 22:46:17,724 INFO  L225             Difference]: With dead ends: 20975
[2023-12-25 22:46:17,724 INFO  L226             Difference]: Without dead ends: 14283
[2023-12-25 22:46:17,727 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5029 GetRequests, 5017 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-12-25 22:46:17,728 INFO  L413           NwaCegarLoop]: 12679 mSDtfsCounter, 31757 mSDsluCounter, 49395 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31757 SdHoareTripleChecker+Valid, 62074 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-12-25 22:46:17,728 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [31757 Valid, 62074 Invalid, 48 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-12-25 22:46:17,735 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14283 states.
[2023-12-25 22:46:17,789 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14283 to 7720.
[2023-12-25 22:46:17,795 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7720 states, 7719 states have (on average 1.664982510687913) internal successors, (12852), 7719 states have internal predecessors, (12852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:46:17,803 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7720 states to 7720 states and 12852 transitions.
[2023-12-25 22:46:17,803 INFO  L78                 Accepts]: Start accepts. Automaton has 7720 states and 12852 transitions. Word has length 5020
[2023-12-25 22:46:17,805 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 22:46:17,805 INFO  L495      AbstractCegarLoop]: Abstraction has 7720 states and 12852 transitions.
[2023-12-25 22:46:17,806 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 642.7142857142857) internal successors, (4499), 7 states have internal predecessors, (4499), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:46:17,806 INFO  L276                IsEmpty]: Start isEmpty. Operand 7720 states and 12852 transitions.
[2023-12-25 22:46:17,929 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5022
[2023-12-25 22:46:17,929 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 22:46:17,930 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-12-25 22:46:17,998 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0
[2023-12-25 22:46:18,131 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 22:46:18,131 INFO  L420      AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 22:46:18,132 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 22:46:18,132 INFO  L85        PathProgramCache]: Analyzing trace with hash -32416498, now seen corresponding path program 1 times
[2023-12-25 22:46:18,132 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 22:46:18,132 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [741837413]
[2023-12-25 22:46:18,133 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:46:18,133 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 22:46:18,475 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 22:46:18,475 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [679810870]
[2023-12-25 22:46:18,476 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:46:18,477 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 22:46:18,477 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 22:46:18,478 INFO  L229       MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-25 22:46:18,478 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process
[2023-12-25 22:46:23,625 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 22:46:23,770 INFO  L262         TraceCheckSpWp]: Trace formula consists of 22424 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-12-25 22:46:23,846 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 22:46:24,147 INFO  L134       CoverageAnalysis]: Checked inductivity of 572 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 518 trivial. 0 not checked.
[2023-12-25 22:46:24,147 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 22:46:24,147 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 22:46:24,147 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [741837413]
[2023-12-25 22:46:24,147 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 22:46:24,148 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [679810870]
[2023-12-25 22:46:24,148 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [679810870] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 22:46:24,148 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 22:46:24,148 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-12-25 22:46:24,148 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1394442331]
[2023-12-25 22:46:24,148 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 22:46:24,152 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-12-25 22:46:24,152 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 22:46:24,167 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-12-25 22:46:24,168 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-12-25 22:46:24,185 INFO  L87              Difference]: Start difference. First operand 7720 states and 12852 transitions. Second operand  has 7 states, 7 states have (on average 643.4285714285714) internal successors, (4504), 7 states have internal predecessors, (4504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:46:24,515 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 22:46:24,515 INFO  L93              Difference]: Finished difference Result 20990 states and 34941 transitions.
[2023-12-25 22:46:24,515 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-12-25 22:46:24,516 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 643.4285714285714) internal successors, (4504), 7 states have internal predecessors, (4504), 0 states have call successors, (0), 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 5021
[2023-12-25 22:46:24,519 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 22:46:24,531 INFO  L225             Difference]: With dead ends: 20990
[2023-12-25 22:46:24,531 INFO  L226             Difference]: Without dead ends: 14287
[2023-12-25 22:46:24,539 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5030 GetRequests, 5018 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-12-25 22:46:24,545 INFO  L413           NwaCegarLoop]: 12669 mSDtfsCounter, 31761 mSDsluCounter, 49365 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31761 SdHoareTripleChecker+Valid, 62034 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-12-25 22:46:24,545 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [31761 Valid, 62034 Invalid, 48 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-12-25 22:46:24,556 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14287 states.
[2023-12-25 22:46:24,619 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14287 to 7725.
[2023-12-25 22:46:24,624 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7725 states, 7724 states have (on average 1.664810978767478) internal successors, (12859), 7724 states have internal predecessors, (12859), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:46:24,630 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7725 states to 7725 states and 12859 transitions.
[2023-12-25 22:46:24,630 INFO  L78                 Accepts]: Start accepts. Automaton has 7725 states and 12859 transitions. Word has length 5021
[2023-12-25 22:46:24,633 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 22:46:24,633 INFO  L495      AbstractCegarLoop]: Abstraction has 7725 states and 12859 transitions.
[2023-12-25 22:46:24,634 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 643.4285714285714) internal successors, (4504), 7 states have internal predecessors, (4504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:46:24,634 INFO  L276                IsEmpty]: Start isEmpty. Operand 7725 states and 12859 transitions.
[2023-12-25 22:46:24,754 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5023
[2023-12-25 22:46:24,754 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 22:46:24,755 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-12-25 22:46:24,819 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0
[2023-12-25 22:46:24,972 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 22:46:24,972 INFO  L420      AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 22:46:24,973 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 22:46:24,973 INFO  L85        PathProgramCache]: Analyzing trace with hash 406855202, now seen corresponding path program 1 times
[2023-12-25 22:46:24,973 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 22:46:24,973 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1935016952]
[2023-12-25 22:46:24,974 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:46:24,974 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 22:46:25,332 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 22:46:25,332 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [233621204]
[2023-12-25 22:46:25,333 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:46:25,333 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 22:46:25,334 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 22:46:25,334 INFO  L229       MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-25 22:46:25,335 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process
[2023-12-25 22:46:30,444 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 22:46:30,573 INFO  L262         TraceCheckSpWp]: Trace formula consists of 22427 conjuncts, 21 conjunts are in the unsatisfiable core
[2023-12-25 22:46:30,617 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 22:46:30,953 INFO  L134       CoverageAnalysis]: Checked inductivity of 572 backedges. 58 proven. 0 refuted. 0 times theorem prover too weak. 514 trivial. 0 not checked.
[2023-12-25 22:46:30,953 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 22:46:30,953 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 22:46:30,953 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1935016952]
[2023-12-25 22:46:30,953 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 22:46:30,953 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [233621204]
[2023-12-25 22:46:30,953 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [233621204] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 22:46:30,953 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 22:46:30,954 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8
[2023-12-25 22:46:30,954 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [812157588]
[2023-12-25 22:46:30,954 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 22:46:30,956 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 8 states
[2023-12-25 22:46:30,956 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 22:46:30,958 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2023-12-25 22:46:30,958 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56
[2023-12-25 22:46:30,959 INFO  L87              Difference]: Start difference. First operand 7725 states and 12859 transitions. Second operand  has 8 states, 8 states have (on average 563.625) internal successors, (4509), 8 states have internal predecessors, (4509), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:46:31,321 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 22:46:31,321 INFO  L93              Difference]: Finished difference Result 21007 states and 34964 transitions.
[2023-12-25 22:46:31,322 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. 
[2023-12-25 22:46:31,323 INFO  L78                 Accepts]: Start accepts. Automaton has  has 8 states, 8 states have (on average 563.625) internal successors, (4509), 8 states have internal predecessors, (4509), 0 states have call successors, (0), 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 5022
[2023-12-25 22:46:31,326 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 22:46:31,338 INFO  L225             Difference]: With dead ends: 21007
[2023-12-25 22:46:31,338 INFO  L226             Difference]: Without dead ends: 14293
[2023-12-25 22:46:31,345 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5032 GetRequests, 5018 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240
[2023-12-25 22:46:31,346 INFO  L413           NwaCegarLoop]: 12658 mSDtfsCounter, 31767 mSDsluCounter, 60235 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31767 SdHoareTripleChecker+Valid, 72893 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-12-25 22:46:31,346 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [31767 Valid, 72893 Invalid, 66 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-12-25 22:46:31,355 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14293 states.
[2023-12-25 22:46:31,460 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14293 to 7730.
[2023-12-25 22:46:31,466 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7730 states, 7729 states have (on average 1.6646396687799199) internal successors, (12866), 7729 states have internal predecessors, (12866), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:46:31,472 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7730 states to 7730 states and 12866 transitions.
[2023-12-25 22:46:31,472 INFO  L78                 Accepts]: Start accepts. Automaton has 7730 states and 12866 transitions. Word has length 5022
[2023-12-25 22:46:31,474 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 22:46:31,474 INFO  L495      AbstractCegarLoop]: Abstraction has 7730 states and 12866 transitions.
[2023-12-25 22:46:31,475 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 8 states, 8 states have (on average 563.625) internal successors, (4509), 8 states have internal predecessors, (4509), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:46:31,475 INFO  L276                IsEmpty]: Start isEmpty. Operand 7730 states and 12866 transitions.
[2023-12-25 22:46:31,595 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5024
[2023-12-25 22:46:31,596 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 22:46:31,597 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-12-25 22:46:31,658 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0
[2023-12-25 22:46:31,814 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 22:46:31,815 INFO  L420      AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 22:46:31,815 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 22:46:31,815 INFO  L85        PathProgramCache]: Analyzing trace with hash -397685950, now seen corresponding path program 1 times
[2023-12-25 22:46:31,815 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 22:46:31,815 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1487752738]
[2023-12-25 22:46:31,816 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:46:31,816 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 22:46:32,156 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 22:46:32,156 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [269475385]
[2023-12-25 22:46:32,157 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:46:32,157 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 22:46:32,157 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 22:46:32,158 INFO  L229       MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-25 22:46:32,159 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process
[2023-12-25 22:46:37,050 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 22:46:37,185 INFO  L262         TraceCheckSpWp]: Trace formula consists of 22430 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-12-25 22:46:37,232 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 22:46:37,590 INFO  L134       CoverageAnalysis]: Checked inductivity of 572 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 510 trivial. 0 not checked.
[2023-12-25 22:46:37,590 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 22:46:37,591 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 22:46:37,591 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1487752738]
[2023-12-25 22:46:37,591 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 22:46:37,591 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [269475385]
[2023-12-25 22:46:37,591 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [269475385] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 22:46:37,591 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 22:46:37,591 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-12-25 22:46:37,591 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1774828886]
[2023-12-25 22:46:37,591 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 22:46:37,594 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-12-25 22:46:37,594 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 22:46:37,595 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-12-25 22:46:37,595 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-12-25 22:46:37,596 INFO  L87              Difference]: Start difference. First operand 7730 states and 12866 transitions. Second operand  has 7 states, 7 states have (on average 644.8571428571429) internal successors, (4514), 7 states have internal predecessors, (4514), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:46:37,911 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 22:46:37,911 INFO  L93              Difference]: Finished difference Result 21020 states and 34983 transitions.
[2023-12-25 22:46:37,911 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-12-25 22:46:37,912 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 644.8571428571429) internal successors, (4514), 7 states have internal predecessors, (4514), 0 states have call successors, (0), 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 5023
[2023-12-25 22:46:37,915 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 22:46:37,929 INFO  L225             Difference]: With dead ends: 21020
[2023-12-25 22:46:37,929 INFO  L226             Difference]: Without dead ends: 14295
[2023-12-25 22:46:37,937 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5032 GetRequests, 5020 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-12-25 22:46:37,938 INFO  L413           NwaCegarLoop]: 12649 mSDtfsCounter, 31769 mSDsluCounter, 49305 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31769 SdHoareTripleChecker+Valid, 61954 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-12-25 22:46:37,938 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [31769 Valid, 61954 Invalid, 48 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-12-25 22:46:37,950 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14295 states.
[2023-12-25 22:46:38,018 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14295 to 7735.
[2023-12-25 22:46:38,024 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7735 states, 7734 states have (on average 1.6644685802948023) internal successors, (12873), 7734 states have internal predecessors, (12873), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:46:38,030 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7735 states to 7735 states and 12873 transitions.
[2023-12-25 22:46:38,030 INFO  L78                 Accepts]: Start accepts. Automaton has 7735 states and 12873 transitions. Word has length 5023
[2023-12-25 22:46:38,033 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 22:46:38,033 INFO  L495      AbstractCegarLoop]: Abstraction has 7735 states and 12873 transitions.
[2023-12-25 22:46:38,033 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 644.8571428571429) internal successors, (4514), 7 states have internal predecessors, (4514), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:46:38,034 INFO  L276                IsEmpty]: Start isEmpty. Operand 7735 states and 12873 transitions.
[2023-12-25 22:46:38,204 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5025
[2023-12-25 22:46:38,204 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 22:46:38,205 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-12-25 22:46:38,265 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0
[2023-12-25 22:46:38,432 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 22:46:38,432 INFO  L420      AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 22:46:38,433 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 22:46:38,433 INFO  L85        PathProgramCache]: Analyzing trace with hash 288532206, now seen corresponding path program 1 times
[2023-12-25 22:46:38,433 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 22:46:38,433 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1156774080]
[2023-12-25 22:46:38,433 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:46:38,434 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 22:46:38,729 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 22:46:38,729 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1193448484]
[2023-12-25 22:46:38,730 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:46:38,730 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 22:46:38,731 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 22:46:38,731 INFO  L229       MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-25 22:46:38,740 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process
[2023-12-25 22:46:43,840 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 22:46:43,976 INFO  L262         TraceCheckSpWp]: Trace formula consists of 22433 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-12-25 22:46:44,022 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 22:46:44,230 INFO  L134       CoverageAnalysis]: Checked inductivity of 572 backedges. 66 proven. 0 refuted. 0 times theorem prover too weak. 506 trivial. 0 not checked.
[2023-12-25 22:46:44,230 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 22:46:44,230 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 22:46:44,230 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1156774080]
[2023-12-25 22:46:44,230 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 22:46:44,230 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1193448484]
[2023-12-25 22:46:44,230 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1193448484] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 22:46:44,230 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 22:46:44,231 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-12-25 22:46:44,231 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [141815182]
[2023-12-25 22:46:44,231 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 22:46:44,233 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-12-25 22:46:44,233 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 22:46:44,235 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-12-25 22:46:44,235 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-12-25 22:46:44,235 INFO  L87              Difference]: Start difference. First operand 7735 states and 12873 transitions. Second operand  has 7 states, 7 states have (on average 645.5714285714286) internal successors, (4519), 7 states have internal predecessors, (4519), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:46:44,560 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 22:46:44,560 INFO  L93              Difference]: Finished difference Result 21035 states and 35004 transitions.
[2023-12-25 22:46:44,560 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-12-25 22:46:44,561 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 645.5714285714286) internal successors, (4519), 7 states have internal predecessors, (4519), 0 states have call successors, (0), 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 5024
[2023-12-25 22:46:44,564 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 22:46:44,576 INFO  L225             Difference]: With dead ends: 21035
[2023-12-25 22:46:44,576 INFO  L226             Difference]: Without dead ends: 14299
[2023-12-25 22:46:44,583 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5033 GetRequests, 5021 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-12-25 22:46:44,583 INFO  L413           NwaCegarLoop]: 12639 mSDtfsCounter, 31773 mSDsluCounter, 49275 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31773 SdHoareTripleChecker+Valid, 61914 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-12-25 22:46:44,584 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [31773 Valid, 61914 Invalid, 48 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-12-25 22:46:44,592 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14299 states.
[2023-12-25 22:46:44,740 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14299 to 7740.
[2023-12-25 22:46:44,746 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7740 states, 7739 states have (on average 1.6642977128828014) internal successors, (12880), 7739 states have internal predecessors, (12880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:46:44,753 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7740 states to 7740 states and 12880 transitions.
[2023-12-25 22:46:44,754 INFO  L78                 Accepts]: Start accepts. Automaton has 7740 states and 12880 transitions. Word has length 5024
[2023-12-25 22:46:44,756 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 22:46:44,756 INFO  L495      AbstractCegarLoop]: Abstraction has 7740 states and 12880 transitions.
[2023-12-25 22:46:44,756 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 645.5714285714286) internal successors, (4519), 7 states have internal predecessors, (4519), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:46:44,757 INFO  L276                IsEmpty]: Start isEmpty. Operand 7740 states and 12880 transitions.
[2023-12-25 22:46:44,877 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5026
[2023-12-25 22:46:44,877 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 22:46:44,878 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-12-25 22:46:44,941 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0
[2023-12-25 22:46:45,096 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 22:46:45,097 INFO  L420      AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 22:46:45,097 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 22:46:45,097 INFO  L85        PathProgramCache]: Analyzing trace with hash -936019082, now seen corresponding path program 1 times
[2023-12-25 22:46:45,097 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 22:46:45,097 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [147908007]
[2023-12-25 22:46:45,098 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:46:45,098 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 22:46:45,488 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 22:46:45,488 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1311649565]
[2023-12-25 22:46:45,489 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:46:45,489 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 22:46:45,489 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 22:46:45,490 INFO  L229       MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-25 22:46:45,502 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process
[2023-12-25 22:46:50,560 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 22:46:50,686 INFO  L262         TraceCheckSpWp]: Trace formula consists of 22436 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-12-25 22:46:50,730 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 22:46:50,935 INFO  L134       CoverageAnalysis]: Checked inductivity of 572 backedges. 70 proven. 0 refuted. 0 times theorem prover too weak. 502 trivial. 0 not checked.
[2023-12-25 22:46:50,935 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 22:46:50,935 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 22:46:50,935 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [147908007]
[2023-12-25 22:46:50,935 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 22:46:50,935 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1311649565]
[2023-12-25 22:46:50,935 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1311649565] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 22:46:50,935 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 22:46:50,936 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-12-25 22:46:50,936 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1471888869]
[2023-12-25 22:46:50,936 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 22:46:50,938 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-12-25 22:46:50,938 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 22:46:50,940 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-12-25 22:46:50,940 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-12-25 22:46:50,940 INFO  L87              Difference]: Start difference. First operand 7740 states and 12880 transitions. Second operand  has 7 states, 7 states have (on average 646.2857142857143) internal successors, (4524), 7 states have internal predecessors, (4524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:46:51,252 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 22:46:51,252 INFO  L93              Difference]: Finished difference Result 21050 states and 35025 transitions.
[2023-12-25 22:46:51,253 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-12-25 22:46:51,254 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 646.2857142857143) internal successors, (4524), 7 states have internal predecessors, (4524), 0 states have call successors, (0), 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 5025
[2023-12-25 22:46:51,257 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 22:46:51,268 INFO  L225             Difference]: With dead ends: 21050
[2023-12-25 22:46:51,268 INFO  L226             Difference]: Without dead ends: 14303
[2023-12-25 22:46:51,275 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5034 GetRequests, 5022 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-12-25 22:46:51,275 INFO  L413           NwaCegarLoop]: 12629 mSDtfsCounter, 31777 mSDsluCounter, 49245 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31777 SdHoareTripleChecker+Valid, 61874 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-12-25 22:46:51,276 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [31777 Valid, 61874 Invalid, 48 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-12-25 22:46:51,284 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14303 states.
[2023-12-25 22:46:51,345 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14303 to 7745.
[2023-12-25 22:46:51,351 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7745 states, 7744 states have (on average 1.6641270661157024) internal successors, (12887), 7744 states have internal predecessors, (12887), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:46:51,357 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7745 states to 7745 states and 12887 transitions.
[2023-12-25 22:46:51,357 INFO  L78                 Accepts]: Start accepts. Automaton has 7745 states and 12887 transitions. Word has length 5025
[2023-12-25 22:46:51,359 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 22:46:51,359 INFO  L495      AbstractCegarLoop]: Abstraction has 7745 states and 12887 transitions.
[2023-12-25 22:46:51,360 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 646.2857142857143) internal successors, (4524), 7 states have internal predecessors, (4524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:46:51,360 INFO  L276                IsEmpty]: Start isEmpty. Operand 7745 states and 12887 transitions.
[2023-12-25 22:46:51,557 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5027
[2023-12-25 22:46:51,557 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 22:46:51,558 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-12-25 22:46:51,624 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 22:46:51,775 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 22:46:51,776 INFO  L420      AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 22:46:51,776 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 22:46:51,777 INFO  L85        PathProgramCache]: Analyzing trace with hash 326864314, now seen corresponding path program 1 times
[2023-12-25 22:46:51,777 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 22:46:51,777 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [801536624]
[2023-12-25 22:46:51,777 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:46:51,777 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 22:46:52,081 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 22:46:52,081 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1013923207]
[2023-12-25 22:46:52,082 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:46:52,082 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 22:46:52,082 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 22:46:52,083 INFO  L229       MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-25 22:46:52,085 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process
[2023-12-25 22:46:57,423 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 22:46:57,579 INFO  L262         TraceCheckSpWp]: Trace formula consists of 22439 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-12-25 22:46:57,633 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 22:46:57,811 INFO  L134       CoverageAnalysis]: Checked inductivity of 572 backedges. 74 proven. 0 refuted. 0 times theorem prover too weak. 498 trivial. 0 not checked.
[2023-12-25 22:46:57,811 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 22:46:57,811 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 22:46:57,811 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [801536624]
[2023-12-25 22:46:57,811 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 22:46:57,811 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1013923207]
[2023-12-25 22:46:57,811 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1013923207] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 22:46:57,811 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 22:46:57,812 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-12-25 22:46:57,812 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1671878706]
[2023-12-25 22:46:57,812 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 22:46:57,815 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-12-25 22:46:57,815 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 22:46:57,817 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-12-25 22:46:57,818 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-12-25 22:46:57,818 INFO  L87              Difference]: Start difference. First operand 7745 states and 12887 transitions. Second operand  has 7 states, 7 states have (on average 647.0) internal successors, (4529), 7 states have internal predecessors, (4529), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:46:58,230 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 22:46:58,230 INFO  L93              Difference]: Finished difference Result 21065 states and 35046 transitions.
[2023-12-25 22:46:58,230 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-12-25 22:46:58,231 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 647.0) internal successors, (4529), 7 states have internal predecessors, (4529), 0 states have call successors, (0), 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 5026
[2023-12-25 22:46:58,235 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 22:46:58,247 INFO  L225             Difference]: With dead ends: 21065
[2023-12-25 22:46:58,247 INFO  L226             Difference]: Without dead ends: 14307
[2023-12-25 22:46:58,255 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5035 GetRequests, 5023 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-12-25 22:46:58,256 INFO  L413           NwaCegarLoop]: 12619 mSDtfsCounter, 31781 mSDsluCounter, 49215 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31781 SdHoareTripleChecker+Valid, 61834 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-12-25 22:46:58,256 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [31781 Valid, 61834 Invalid, 48 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-12-25 22:46:58,266 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14307 states.
[2023-12-25 22:46:58,335 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14307 to 7750.
[2023-12-25 22:46:58,341 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7750 states, 7749 states have (on average 1.6639566395663956) internal successors, (12894), 7749 states have internal predecessors, (12894), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:46:58,348 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7750 states to 7750 states and 12894 transitions.
[2023-12-25 22:46:58,348 INFO  L78                 Accepts]: Start accepts. Automaton has 7750 states and 12894 transitions. Word has length 5026
[2023-12-25 22:46:58,351 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 22:46:58,351 INFO  L495      AbstractCegarLoop]: Abstraction has 7750 states and 12894 transitions.
[2023-12-25 22:46:58,351 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 647.0) internal successors, (4529), 7 states have internal predecessors, (4529), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:46:58,351 INFO  L276                IsEmpty]: Start isEmpty. Operand 7750 states and 12894 transitions.
[2023-12-25 22:46:58,476 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5028
[2023-12-25 22:46:58,476 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 22:46:58,477 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-12-25 22:46:58,551 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Forceful destruction successful, exit code 0
[2023-12-25 22:46:58,681 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 22:46:58,681 INFO  L420      AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 22:46:58,682 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 22:46:58,682 INFO  L85        PathProgramCache]: Analyzing trace with hash 2077437354, now seen corresponding path program 1 times
[2023-12-25 22:46:58,682 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 22:46:58,682 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1789849760]
[2023-12-25 22:46:58,683 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:46:58,683 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 22:46:59,083 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 22:46:59,084 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [183228820]
[2023-12-25 22:46:59,085 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:46:59,085 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 22:46:59,085 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 22:46:59,086 INFO  L229       MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-25 22:46:59,087 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process
[2023-12-25 22:47:04,052 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 22:47:04,195 INFO  L262         TraceCheckSpWp]: Trace formula consists of 22442 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-12-25 22:47:04,248 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 22:47:04,576 INFO  L134       CoverageAnalysis]: Checked inductivity of 572 backedges. 78 proven. 0 refuted. 0 times theorem prover too weak. 494 trivial. 0 not checked.
[2023-12-25 22:47:04,576 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 22:47:04,576 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 22:47:04,576 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1789849760]
[2023-12-25 22:47:04,576 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 22:47:04,576 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [183228820]
[2023-12-25 22:47:04,576 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [183228820] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 22:47:04,577 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 22:47:04,577 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-12-25 22:47:04,577 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [503885758]
[2023-12-25 22:47:04,577 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 22:47:04,579 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-12-25 22:47:04,579 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 22:47:04,588 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-12-25 22:47:04,588 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-12-25 22:47:04,589 INFO  L87              Difference]: Start difference. First operand 7750 states and 12894 transitions. Second operand  has 7 states, 7 states have (on average 647.7142857142857) internal successors, (4534), 7 states have internal predecessors, (4534), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:47:04,920 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 22:47:04,920 INFO  L93              Difference]: Finished difference Result 21080 states and 35067 transitions.
[2023-12-25 22:47:04,921 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-12-25 22:47:04,922 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 647.7142857142857) internal successors, (4534), 7 states have internal predecessors, (4534), 0 states have call successors, (0), 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 5027
[2023-12-25 22:47:04,925 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 22:47:04,937 INFO  L225             Difference]: With dead ends: 21080
[2023-12-25 22:47:04,937 INFO  L226             Difference]: Without dead ends: 14311
[2023-12-25 22:47:04,944 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5036 GetRequests, 5024 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-12-25 22:47:04,945 INFO  L413           NwaCegarLoop]: 12609 mSDtfsCounter, 31785 mSDsluCounter, 49185 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31785 SdHoareTripleChecker+Valid, 61794 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-12-25 22:47:04,945 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [31785 Valid, 61794 Invalid, 48 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-12-25 22:47:04,955 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14311 states.
[2023-12-25 22:47:05,022 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14311 to 7755.
[2023-12-25 22:47:05,028 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7755 states, 7754 states have (on average 1.663786432808873) internal successors, (12901), 7754 states have internal predecessors, (12901), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:47:05,034 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7755 states to 7755 states and 12901 transitions.
[2023-12-25 22:47:05,035 INFO  L78                 Accepts]: Start accepts. Automaton has 7755 states and 12901 transitions. Word has length 5027
[2023-12-25 22:47:05,037 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 22:47:05,037 INFO  L495      AbstractCegarLoop]: Abstraction has 7755 states and 12901 transitions.
[2023-12-25 22:47:05,038 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 647.7142857142857) internal successors, (4534), 7 states have internal predecessors, (4534), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:47:05,038 INFO  L276                IsEmpty]: Start isEmpty. Operand 7755 states and 12901 transitions.
[2023-12-25 22:47:05,161 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5029
[2023-12-25 22:47:05,161 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 22:47:05,162 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-12-25 22:47:05,231 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 22:47:05,381 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 22:47:05,383 INFO  L420      AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 22:47:05,383 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 22:47:05,384 INFO  L85        PathProgramCache]: Analyzing trace with hash -998894970, now seen corresponding path program 1 times
[2023-12-25 22:47:05,384 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 22:47:05,384 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1307554453]
[2023-12-25 22:47:05,384 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:47:05,384 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 22:47:05,771 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 22:47:05,771 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [583283718]
[2023-12-25 22:47:05,772 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:47:05,772 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 22:47:05,772 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 22:47:05,774 INFO  L229       MonitoredProcess]: Starting monitored process 34 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-25 22:47:05,775 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process
[2023-12-25 22:47:10,778 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 22:47:10,913 INFO  L262         TraceCheckSpWp]: Trace formula consists of 22445 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-12-25 22:47:10,967 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 22:47:11,179 INFO  L134       CoverageAnalysis]: Checked inductivity of 572 backedges. 82 proven. 0 refuted. 0 times theorem prover too weak. 490 trivial. 0 not checked.
[2023-12-25 22:47:11,179 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 22:47:11,179 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 22:47:11,179 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1307554453]
[2023-12-25 22:47:11,179 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 22:47:11,179 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [583283718]
[2023-12-25 22:47:11,179 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [583283718] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 22:47:11,180 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 22:47:11,180 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-12-25 22:47:11,180 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [189248511]
[2023-12-25 22:47:11,180 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 22:47:11,182 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-12-25 22:47:11,182 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 22:47:11,184 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-12-25 22:47:11,184 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-12-25 22:47:11,184 INFO  L87              Difference]: Start difference. First operand 7755 states and 12901 transitions. Second operand  has 7 states, 7 states have (on average 648.4285714285714) internal successors, (4539), 7 states have internal predecessors, (4539), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:47:11,603 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 22:47:11,604 INFO  L93              Difference]: Finished difference Result 21095 states and 35088 transitions.
[2023-12-25 22:47:11,604 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-12-25 22:47:11,605 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 648.4285714285714) internal successors, (4539), 7 states have internal predecessors, (4539), 0 states have call successors, (0), 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 5028
[2023-12-25 22:47:11,608 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 22:47:11,621 INFO  L225             Difference]: With dead ends: 21095
[2023-12-25 22:47:11,621 INFO  L226             Difference]: Without dead ends: 14315
[2023-12-25 22:47:11,629 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5037 GetRequests, 5025 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-12-25 22:47:11,629 INFO  L413           NwaCegarLoop]: 12599 mSDtfsCounter, 31789 mSDsluCounter, 49155 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31789 SdHoareTripleChecker+Valid, 61754 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-12-25 22:47:11,629 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [31789 Valid, 61754 Invalid, 48 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-12-25 22:47:11,638 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14315 states.
[2023-12-25 22:47:11,702 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14315 to 7760.
[2023-12-25 22:47:11,708 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7760 states, 7759 states have (on average 1.663616445418224) internal successors, (12908), 7759 states have internal predecessors, (12908), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:47:11,715 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7760 states to 7760 states and 12908 transitions.
[2023-12-25 22:47:11,716 INFO  L78                 Accepts]: Start accepts. Automaton has 7760 states and 12908 transitions. Word has length 5028
[2023-12-25 22:47:11,718 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 22:47:11,718 INFO  L495      AbstractCegarLoop]: Abstraction has 7760 states and 12908 transitions.
[2023-12-25 22:47:11,719 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 648.4285714285714) internal successors, (4539), 7 states have internal predecessors, (4539), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:47:11,719 INFO  L276                IsEmpty]: Start isEmpty. Operand 7760 states and 12908 transitions.
[2023-12-25 22:47:11,843 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5030
[2023-12-25 22:47:11,843 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 22:47:11,844 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-12-25 22:47:11,917 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Forceful destruction successful, exit code 0
[2023-12-25 22:47:12,066 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35
[2023-12-25 22:47:12,067 INFO  L420      AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 22:47:12,067 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 22:47:12,067 INFO  L85        PathProgramCache]: Analyzing trace with hash -1016487458, now seen corresponding path program 1 times
[2023-12-25 22:47:12,067 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 22:47:12,067 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2081832]
[2023-12-25 22:47:12,068 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:47:12,068 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 22:47:12,372 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 22:47:12,373 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1339294580]
[2023-12-25 22:47:12,374 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:47:12,374 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 22:47:12,374 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 22:47:12,375 INFO  L229       MonitoredProcess]: Starting monitored process 35 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-25 22:47:12,377 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process
[2023-12-25 22:47:17,541 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 22:47:17,686 INFO  L262         TraceCheckSpWp]: Trace formula consists of 22448 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-12-25 22:47:17,729 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 22:47:17,933 INFO  L134       CoverageAnalysis]: Checked inductivity of 572 backedges. 86 proven. 0 refuted. 0 times theorem prover too weak. 486 trivial. 0 not checked.
[2023-12-25 22:47:17,933 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 22:47:17,933 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 22:47:17,933 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2081832]
[2023-12-25 22:47:17,933 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 22:47:17,933 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1339294580]
[2023-12-25 22:47:17,933 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1339294580] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 22:47:17,933 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 22:47:17,934 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-12-25 22:47:17,934 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [532156658]
[2023-12-25 22:47:17,934 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 22:47:17,937 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-12-25 22:47:17,937 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 22:47:17,939 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-12-25 22:47:17,939 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-12-25 22:47:17,939 INFO  L87              Difference]: Start difference. First operand 7760 states and 12908 transitions. Second operand  has 7 states, 7 states have (on average 649.1428571428571) internal successors, (4544), 7 states have internal predecessors, (4544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:47:18,251 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 22:47:18,252 INFO  L93              Difference]: Finished difference Result 21110 states and 35109 transitions.
[2023-12-25 22:47:18,253 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-12-25 22:47:18,254 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 649.1428571428571) internal successors, (4544), 7 states have internal predecessors, (4544), 0 states have call successors, (0), 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 5029
[2023-12-25 22:47:18,257 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 22:47:18,269 INFO  L225             Difference]: With dead ends: 21110
[2023-12-25 22:47:18,269 INFO  L226             Difference]: Without dead ends: 14319
[2023-12-25 22:47:18,275 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5038 GetRequests, 5026 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-12-25 22:47:18,277 INFO  L413           NwaCegarLoop]: 12589 mSDtfsCounter, 31793 mSDsluCounter, 49125 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31793 SdHoareTripleChecker+Valid, 61714 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-12-25 22:47:18,277 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [31793 Valid, 61714 Invalid, 48 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-12-25 22:47:18,286 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14319 states.
[2023-12-25 22:47:18,344 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14319 to 7765.
[2023-12-25 22:47:18,349 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7765 states, 7764 states have (on average 1.6634466769706338) internal successors, (12915), 7764 states have internal predecessors, (12915), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:47:18,355 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7765 states to 7765 states and 12915 transitions.
[2023-12-25 22:47:18,355 INFO  L78                 Accepts]: Start accepts. Automaton has 7765 states and 12915 transitions. Word has length 5029
[2023-12-25 22:47:18,357 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 22:47:18,357 INFO  L495      AbstractCegarLoop]: Abstraction has 7765 states and 12915 transitions.
[2023-12-25 22:47:18,358 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 649.1428571428571) internal successors, (4544), 7 states have internal predecessors, (4544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:47:18,358 INFO  L276                IsEmpty]: Start isEmpty. Operand 7765 states and 12915 transitions.
[2023-12-25 22:47:18,567 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5031
[2023-12-25 22:47:18,567 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 22:47:18,568 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-12-25 22:47:18,629 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Forceful destruction successful, exit code 0
[2023-12-25 22:47:18,794 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36
[2023-12-25 22:47:18,794 INFO  L420      AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 22:47:18,795 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 22:47:18,795 INFO  L85        PathProgramCache]: Analyzing trace with hash 1430091090, now seen corresponding path program 1 times
[2023-12-25 22:47:18,795 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 22:47:18,795 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1521823759]
[2023-12-25 22:47:18,796 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:47:18,796 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 22:47:19,091 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 22:47:19,092 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [693446535]
[2023-12-25 22:47:19,093 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:47:19,093 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 22:47:19,093 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 22:47:19,094 INFO  L229       MonitoredProcess]: Starting monitored process 36 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-25 22:47:19,094 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process
[2023-12-25 22:47:24,190 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 22:47:24,330 INFO  L262         TraceCheckSpWp]: Trace formula consists of 22451 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-12-25 22:47:24,379 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 22:47:24,700 INFO  L134       CoverageAnalysis]: Checked inductivity of 572 backedges. 90 proven. 0 refuted. 0 times theorem prover too weak. 482 trivial. 0 not checked.
[2023-12-25 22:47:24,700 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 22:47:24,700 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 22:47:24,700 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1521823759]
[2023-12-25 22:47:24,701 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 22:47:24,701 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [693446535]
[2023-12-25 22:47:24,701 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [693446535] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 22:47:24,701 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 22:47:24,701 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-12-25 22:47:24,701 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1287095526]
[2023-12-25 22:47:24,701 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 22:47:24,703 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-12-25 22:47:24,704 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 22:47:24,705 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-12-25 22:47:24,705 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-12-25 22:47:24,705 INFO  L87              Difference]: Start difference. First operand 7765 states and 12915 transitions. Second operand  has 7 states, 7 states have (on average 649.8571428571429) internal successors, (4549), 7 states have internal predecessors, (4549), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:47:25,046 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 22:47:25,046 INFO  L93              Difference]: Finished difference Result 21125 states and 35130 transitions.
[2023-12-25 22:47:25,047 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-12-25 22:47:25,048 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 649.8571428571429) internal successors, (4549), 7 states have internal predecessors, (4549), 0 states have call successors, (0), 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 5030
[2023-12-25 22:47:25,051 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 22:47:25,063 INFO  L225             Difference]: With dead ends: 21125
[2023-12-25 22:47:25,063 INFO  L226             Difference]: Without dead ends: 14323
[2023-12-25 22:47:25,071 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5039 GetRequests, 5027 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-12-25 22:47:25,071 INFO  L413           NwaCegarLoop]: 12579 mSDtfsCounter, 31797 mSDsluCounter, 49095 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31797 SdHoareTripleChecker+Valid, 61674 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-12-25 22:47:25,071 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [31797 Valid, 61674 Invalid, 48 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-12-25 22:47:25,081 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14323 states.
[2023-12-25 22:47:25,148 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14323 to 7770.
[2023-12-25 22:47:25,155 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7770 states, 7769 states have (on average 1.6632771270433775) internal successors, (12922), 7769 states have internal predecessors, (12922), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:47:25,162 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7770 states to 7770 states and 12922 transitions.
[2023-12-25 22:47:25,162 INFO  L78                 Accepts]: Start accepts. Automaton has 7770 states and 12922 transitions. Word has length 5030
[2023-12-25 22:47:25,164 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 22:47:25,164 INFO  L495      AbstractCegarLoop]: Abstraction has 7770 states and 12922 transitions.
[2023-12-25 22:47:25,165 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 649.8571428571429) internal successors, (4549), 7 states have internal predecessors, (4549), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:47:25,165 INFO  L276                IsEmpty]: Start isEmpty. Operand 7770 states and 12922 transitions.
[2023-12-25 22:47:25,292 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5032
[2023-12-25 22:47:25,292 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 22:47:25,294 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-12-25 22:47:25,362 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Forceful destruction successful, exit code 0
[2023-12-25 22:47:25,496 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37
[2023-12-25 22:47:25,501 INFO  L420      AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 22:47:25,501 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 22:47:25,501 INFO  L85        PathProgramCache]: Analyzing trace with hash -444753902, now seen corresponding path program 1 times
[2023-12-25 22:47:25,502 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 22:47:25,502 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [128708338]
[2023-12-25 22:47:25,502 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:47:25,502 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 22:47:25,799 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 22:47:25,799 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1421017605]
[2023-12-25 22:47:25,800 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:47:25,800 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 22:47:25,800 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 22:47:25,801 INFO  L229       MonitoredProcess]: Starting monitored process 37 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-25 22:47:25,807 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process
[2023-12-25 22:47:30,952 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 22:47:31,105 INFO  L262         TraceCheckSpWp]: Trace formula consists of 22454 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-12-25 22:47:31,161 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 22:47:31,345 INFO  L134       CoverageAnalysis]: Checked inductivity of 572 backedges. 94 proven. 0 refuted. 0 times theorem prover too weak. 478 trivial. 0 not checked.
[2023-12-25 22:47:31,345 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 22:47:31,345 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 22:47:31,345 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [128708338]
[2023-12-25 22:47:31,345 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 22:47:31,345 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1421017605]
[2023-12-25 22:47:31,345 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1421017605] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 22:47:31,346 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 22:47:31,346 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-12-25 22:47:31,346 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [967670190]
[2023-12-25 22:47:31,346 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 22:47:31,348 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-12-25 22:47:31,348 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 22:47:31,350 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-12-25 22:47:31,350 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-12-25 22:47:31,350 INFO  L87              Difference]: Start difference. First operand 7770 states and 12922 transitions. Second operand  has 7 states, 7 states have (on average 650.5714285714286) internal successors, (4554), 7 states have internal predecessors, (4554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:47:31,660 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 22:47:31,660 INFO  L93              Difference]: Finished difference Result 21140 states and 35151 transitions.
[2023-12-25 22:47:31,660 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-12-25 22:47:31,661 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 650.5714285714286) internal successors, (4554), 7 states have internal predecessors, (4554), 0 states have call successors, (0), 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 5031
[2023-12-25 22:47:31,664 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 22:47:31,677 INFO  L225             Difference]: With dead ends: 21140
[2023-12-25 22:47:31,677 INFO  L226             Difference]: Without dead ends: 14327
[2023-12-25 22:47:31,685 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5040 GetRequests, 5028 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-12-25 22:47:31,686 INFO  L413           NwaCegarLoop]: 12569 mSDtfsCounter, 31801 mSDsluCounter, 49065 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31801 SdHoareTripleChecker+Valid, 61634 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-12-25 22:47:31,686 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [31801 Valid, 61634 Invalid, 48 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-12-25 22:47:31,696 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14327 states.
[2023-12-25 22:47:31,759 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14327 to 7775.
[2023-12-25 22:47:31,764 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7775 states, 7774 states have (on average 1.6631077952148186) internal successors, (12929), 7774 states have internal predecessors, (12929), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:47:31,771 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7775 states to 7775 states and 12929 transitions.
[2023-12-25 22:47:31,772 INFO  L78                 Accepts]: Start accepts. Automaton has 7775 states and 12929 transitions. Word has length 5031
[2023-12-25 22:47:31,774 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 22:47:31,774 INFO  L495      AbstractCegarLoop]: Abstraction has 7775 states and 12929 transitions.
[2023-12-25 22:47:31,775 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 650.5714285714286) internal successors, (4554), 7 states have internal predecessors, (4554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:47:31,775 INFO  L276                IsEmpty]: Start isEmpty. Operand 7775 states and 12929 transitions.
[2023-12-25 22:47:32,020 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5033
[2023-12-25 22:47:32,020 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 22:47:32,021 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-12-25 22:47:32,086 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Forceful destruction successful, exit code 0
[2023-12-25 22:47:32,244 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38
[2023-12-25 22:47:32,244 INFO  L420      AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 22:47:32,245 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 22:47:32,245 INFO  L85        PathProgramCache]: Analyzing trace with hash -559090146, now seen corresponding path program 1 times
[2023-12-25 22:47:32,245 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 22:47:32,245 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1734615507]
[2023-12-25 22:47:32,246 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:47:32,246 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 22:47:32,558 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 22:47:32,558 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1349131945]
[2023-12-25 22:47:32,559 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:47:32,559 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 22:47:32,559 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 22:47:32,560 INFO  L229       MonitoredProcess]: Starting monitored process 38 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-25 22:47:32,562 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process
[2023-12-25 22:47:37,696 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 22:47:37,848 INFO  L262         TraceCheckSpWp]: Trace formula consists of 22457 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-12-25 22:47:37,899 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 22:47:38,122 INFO  L134       CoverageAnalysis]: Checked inductivity of 572 backedges. 98 proven. 0 refuted. 0 times theorem prover too weak. 474 trivial. 0 not checked.
[2023-12-25 22:47:38,122 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 22:47:38,122 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 22:47:38,122 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1734615507]
[2023-12-25 22:47:38,122 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 22:47:38,123 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1349131945]
[2023-12-25 22:47:38,123 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1349131945] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 22:47:38,123 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 22:47:38,123 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-12-25 22:47:38,123 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [237197387]
[2023-12-25 22:47:38,123 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 22:47:38,126 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-12-25 22:47:38,126 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 22:47:38,127 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-12-25 22:47:38,127 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-12-25 22:47:38,128 INFO  L87              Difference]: Start difference. First operand 7775 states and 12929 transitions. Second operand  has 7 states, 7 states have (on average 651.2857142857143) internal successors, (4559), 7 states have internal predecessors, (4559), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:47:38,579 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 22:47:38,579 INFO  L93              Difference]: Finished difference Result 21155 states and 35172 transitions.
[2023-12-25 22:47:38,579 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-12-25 22:47:38,580 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 651.2857142857143) internal successors, (4559), 7 states have internal predecessors, (4559), 0 states have call successors, (0), 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 5032
[2023-12-25 22:47:38,583 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 22:47:38,597 INFO  L225             Difference]: With dead ends: 21155
[2023-12-25 22:47:38,597 INFO  L226             Difference]: Without dead ends: 14331
[2023-12-25 22:47:38,605 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5041 GetRequests, 5029 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-12-25 22:47:38,605 INFO  L413           NwaCegarLoop]: 12559 mSDtfsCounter, 31805 mSDsluCounter, 49035 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31805 SdHoareTripleChecker+Valid, 61594 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-12-25 22:47:38,605 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [31805 Valid, 61594 Invalid, 48 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-12-25 22:47:38,618 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14331 states.
[2023-12-25 22:47:38,698 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14331 to 7780.
[2023-12-25 22:47:38,706 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7780 states, 7779 states have (on average 1.6629386810644042) internal successors, (12936), 7779 states have internal predecessors, (12936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:47:38,714 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7780 states to 7780 states and 12936 transitions.
[2023-12-25 22:47:38,714 INFO  L78                 Accepts]: Start accepts. Automaton has 7780 states and 12936 transitions. Word has length 5032
[2023-12-25 22:47:38,717 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 22:47:38,717 INFO  L495      AbstractCegarLoop]: Abstraction has 7780 states and 12936 transitions.
[2023-12-25 22:47:38,718 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 651.2857142857143) internal successors, (4559), 7 states have internal predecessors, (4559), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:47:38,718 INFO  L276                IsEmpty]: Start isEmpty. Operand 7780 states and 12936 transitions.
[2023-12-25 22:47:38,841 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5034
[2023-12-25 22:47:38,842 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 22:47:38,843 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-12-25 22:47:38,905 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Forceful destruction successful, exit code 0
[2023-12-25 22:47:39,056 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39
[2023-12-25 22:47:39,057 INFO  L420      AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 22:47:39,057 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 22:47:39,057 INFO  L85        PathProgramCache]: Analyzing trace with hash 1389613126, now seen corresponding path program 1 times
[2023-12-25 22:47:39,057 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 22:47:39,057 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [734156235]
[2023-12-25 22:47:39,058 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:47:39,058 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 22:47:39,357 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 22:47:39,357 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [995054864]
[2023-12-25 22:47:39,358 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:47:39,358 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 22:47:39,358 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 22:47:39,359 INFO  L229       MonitoredProcess]: Starting monitored process 39 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-25 22:47:39,361 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process
[2023-12-25 22:47:44,444 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 22:47:44,577 INFO  L262         TraceCheckSpWp]: Trace formula consists of 22460 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-12-25 22:47:44,623 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 22:47:44,804 INFO  L134       CoverageAnalysis]: Checked inductivity of 572 backedges. 100 proven. 0 refuted. 0 times theorem prover too weak. 472 trivial. 0 not checked.
[2023-12-25 22:47:44,804 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 22:47:44,805 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 22:47:44,805 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [734156235]
[2023-12-25 22:47:44,805 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 22:47:44,805 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [995054864]
[2023-12-25 22:47:44,805 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [995054864] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 22:47:44,805 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 22:47:44,805 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-12-25 22:47:44,805 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [872318250]
[2023-12-25 22:47:44,805 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 22:47:44,807 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-12-25 22:47:44,808 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 22:47:44,809 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-12-25 22:47:44,809 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-12-25 22:47:44,810 INFO  L87              Difference]: Start difference. First operand 7780 states and 12936 transitions. Second operand  has 7 states, 7 states have (on average 651.7142857142857) internal successors, (4562), 7 states have internal predecessors, (4562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:47:45,128 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 22:47:45,128 INFO  L93              Difference]: Finished difference Result 21167 states and 35188 transitions.
[2023-12-25 22:47:45,128 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-12-25 22:47:45,129 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 651.7142857142857) internal successors, (4562), 7 states have internal predecessors, (4562), 0 states have call successors, (0), 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 5033
[2023-12-25 22:47:45,132 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 22:47:45,147 INFO  L225             Difference]: With dead ends: 21167
[2023-12-25 22:47:45,147 INFO  L226             Difference]: Without dead ends: 14332
[2023-12-25 22:47:45,154 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5042 GetRequests, 5030 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-12-25 22:47:45,155 INFO  L413           NwaCegarLoop]: 12554 mSDtfsCounter, 31806 mSDsluCounter, 49020 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31806 SdHoareTripleChecker+Valid, 61574 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-12-25 22:47:45,155 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [31806 Valid, 61574 Invalid, 48 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-12-25 22:47:45,167 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14332 states.
[2023-12-25 22:47:45,231 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14332 to 7782.
[2023-12-25 22:47:45,236 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7782 states, 7781 states have (on average 1.6627682817118623) internal successors, (12938), 7781 states have internal predecessors, (12938), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:47:45,242 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7782 states to 7782 states and 12938 transitions.
[2023-12-25 22:47:45,242 INFO  L78                 Accepts]: Start accepts. Automaton has 7782 states and 12938 transitions. Word has length 5033
[2023-12-25 22:47:45,244 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 22:47:45,244 INFO  L495      AbstractCegarLoop]: Abstraction has 7782 states and 12938 transitions.
[2023-12-25 22:47:45,245 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 651.7142857142857) internal successors, (4562), 7 states have internal predecessors, (4562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:47:45,245 INFO  L276                IsEmpty]: Start isEmpty. Operand 7782 states and 12938 transitions.
[2023-12-25 22:47:45,367 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5035
[2023-12-25 22:47:45,367 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 22:47:45,368 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-12-25 22:47:45,430 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Forceful destruction successful, exit code 0
[2023-12-25 22:47:45,577 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable40
[2023-12-25 22:47:45,578 INFO  L420      AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 22:47:45,578 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 22:47:45,578 INFO  L85        PathProgramCache]: Analyzing trace with hash -1348439294, now seen corresponding path program 1 times
[2023-12-25 22:47:45,578 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 22:47:45,578 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1232739611]
[2023-12-25 22:47:45,579 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:47:45,579 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 22:47:45,974 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 22:47:45,974 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [675883232]
[2023-12-25 22:47:45,975 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:47:45,975 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 22:47:45,975 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 22:47:45,976 INFO  L229       MonitoredProcess]: Starting monitored process 40 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-25 22:47:45,980 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process
[2023-12-25 22:47:50,835 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 22:47:50,969 INFO  L262         TraceCheckSpWp]: Trace formula consists of 22464 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-12-25 22:47:51,019 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 22:47:51,227 INFO  L134       CoverageAnalysis]: Checked inductivity of 572 backedges. 104 proven. 0 refuted. 0 times theorem prover too weak. 468 trivial. 0 not checked.
[2023-12-25 22:47:51,228 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 22:47:51,228 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 22:47:51,228 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1232739611]
[2023-12-25 22:47:51,228 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 22:47:51,228 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [675883232]
[2023-12-25 22:47:51,228 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [675883232] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 22:47:51,228 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 22:47:51,228 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-12-25 22:47:51,228 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [197325882]
[2023-12-25 22:47:51,228 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 22:47:51,231 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-12-25 22:47:51,231 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 22:47:51,232 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-12-25 22:47:51,232 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-12-25 22:47:51,233 INFO  L87              Difference]: Start difference. First operand 7782 states and 12938 transitions. Second operand  has 7 states, 7 states have (on average 652.4285714285714) internal successors, (4567), 7 states have internal predecessors, (4567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:47:51,546 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 22:47:51,546 INFO  L93              Difference]: Finished difference Result 21176 states and 35199 transitions.
[2023-12-25 22:47:51,547 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-12-25 22:47:51,548 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 652.4285714285714) internal successors, (4567), 7 states have internal predecessors, (4567), 0 states have call successors, (0), 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 5034
[2023-12-25 22:47:51,551 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 22:47:51,562 INFO  L225             Difference]: With dead ends: 21176
[2023-12-25 22:47:51,563 INFO  L226             Difference]: Without dead ends: 14336
[2023-12-25 22:47:51,570 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5043 GetRequests, 5031 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-12-25 22:47:51,570 INFO  L413           NwaCegarLoop]: 12544 mSDtfsCounter, 31808 mSDsluCounter, 48990 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31808 SdHoareTripleChecker+Valid, 61534 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-12-25 22:47:51,571 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [31808 Valid, 61534 Invalid, 48 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-12-25 22:47:51,579 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14336 states.
[2023-12-25 22:47:51,640 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14336 to 7787.
[2023-12-25 22:47:51,646 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7787 states, 7786 states have (on average 1.6625995376316465) internal successors, (12945), 7786 states have internal predecessors, (12945), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:47:51,652 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7787 states to 7787 states and 12945 transitions.
[2023-12-25 22:47:51,652 INFO  L78                 Accepts]: Start accepts. Automaton has 7787 states and 12945 transitions. Word has length 5034
[2023-12-25 22:47:51,654 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 22:47:51,654 INFO  L495      AbstractCegarLoop]: Abstraction has 7787 states and 12945 transitions.
[2023-12-25 22:47:51,655 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 652.4285714285714) internal successors, (4567), 7 states have internal predecessors, (4567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:47:51,655 INFO  L276                IsEmpty]: Start isEmpty. Operand 7787 states and 12945 transitions.
[2023-12-25 22:47:51,869 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5036
[2023-12-25 22:47:51,869 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 22:47:51,870 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-12-25 22:47:51,938 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Forceful destruction successful, exit code 0
[2023-12-25 22:47:52,072 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable41
[2023-12-25 22:47:52,073 INFO  L420      AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 22:47:52,073 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 22:47:52,073 INFO  L85        PathProgramCache]: Analyzing trace with hash 1605068024, now seen corresponding path program 1 times
[2023-12-25 22:47:52,073 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 22:47:52,073 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [721476871]
[2023-12-25 22:47:52,074 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:47:52,074 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 22:47:52,363 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 22:47:52,363 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1118199045]
[2023-12-25 22:47:52,364 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:47:52,364 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 22:47:52,364 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 22:47:52,365 INFO  L229       MonitoredProcess]: Starting monitored process 41 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-25 22:47:52,366 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Waiting until timeout for monitored process
[2023-12-25 22:47:57,179 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 22:47:57,315 INFO  L262         TraceCheckSpWp]: Trace formula consists of 22467 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-12-25 22:47:57,363 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 22:47:57,570 INFO  L134       CoverageAnalysis]: Checked inductivity of 572 backedges. 108 proven. 0 refuted. 0 times theorem prover too weak. 464 trivial. 0 not checked.
[2023-12-25 22:47:57,570 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 22:47:57,570 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 22:47:57,570 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [721476871]
[2023-12-25 22:47:57,570 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 22:47:57,570 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1118199045]
[2023-12-25 22:47:57,571 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1118199045] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 22:47:57,571 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 22:47:57,571 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-12-25 22:47:57,571 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1252251028]
[2023-12-25 22:47:57,571 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 22:47:57,573 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-12-25 22:47:57,574 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 22:47:57,575 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-12-25 22:47:57,576 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-12-25 22:47:57,576 INFO  L87              Difference]: Start difference. First operand 7787 states and 12945 transitions. Second operand  has 7 states, 7 states have (on average 653.1428571428571) internal successors, (4572), 7 states have internal predecessors, (4572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:47:58,035 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 22:47:58,036 INFO  L93              Difference]: Finished difference Result 21191 states and 35220 transitions.
[2023-12-25 22:47:58,036 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-12-25 22:47:58,037 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 653.1428571428571) internal successors, (4572), 7 states have internal predecessors, (4572), 0 states have call successors, (0), 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 5035
[2023-12-25 22:47:58,040 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 22:47:58,049 INFO  L225             Difference]: With dead ends: 21191
[2023-12-25 22:47:58,049 INFO  L226             Difference]: Without dead ends: 14340
[2023-12-25 22:47:58,053 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5044 GetRequests, 5032 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-12-25 22:47:58,057 INFO  L413           NwaCegarLoop]: 12534 mSDtfsCounter, 31812 mSDsluCounter, 48960 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31812 SdHoareTripleChecker+Valid, 61494 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-12-25 22:47:58,058 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [31812 Valid, 61494 Invalid, 48 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-12-25 22:47:58,066 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14340 states.
[2023-12-25 22:47:58,121 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14340 to 7792.
[2023-12-25 22:47:58,127 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7792 states, 7791 states have (on average 1.662431010139905) internal successors, (12952), 7791 states have internal predecessors, (12952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:47:58,133 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7792 states to 7792 states and 12952 transitions.
[2023-12-25 22:47:58,134 INFO  L78                 Accepts]: Start accepts. Automaton has 7792 states and 12952 transitions. Word has length 5035
[2023-12-25 22:47:58,136 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 22:47:58,137 INFO  L495      AbstractCegarLoop]: Abstraction has 7792 states and 12952 transitions.
[2023-12-25 22:47:58,138 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 653.1428571428571) internal successors, (4572), 7 states have internal predecessors, (4572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:47:58,138 INFO  L276                IsEmpty]: Start isEmpty. Operand 7792 states and 12952 transitions.
[2023-12-25 22:47:58,261 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5037
[2023-12-25 22:47:58,261 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 22:47:58,262 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-12-25 22:47:58,322 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Forceful destruction successful, exit code 0
[2023-12-25 22:47:58,463 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable42
[2023-12-25 22:47:58,463 INFO  L420      AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 22:47:58,463 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 22:47:58,464 INFO  L85        PathProgramCache]: Analyzing trace with hash 1089440844, now seen corresponding path program 1 times
[2023-12-25 22:47:58,464 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 22:47:58,464 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1617924104]
[2023-12-25 22:47:58,464 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:47:58,464 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 22:47:58,755 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 22:47:58,755 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2141018603]
[2023-12-25 22:47:58,756 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:47:58,756 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 22:47:58,756 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 22:47:58,757 INFO  L229       MonitoredProcess]: Starting monitored process 42 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-25 22:47:58,758 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Waiting until timeout for monitored process
[2023-12-25 22:48:03,697 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 22:48:03,841 INFO  L262         TraceCheckSpWp]: Trace formula consists of 22471 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-12-25 22:48:03,892 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 22:48:04,289 INFO  L134       CoverageAnalysis]: Checked inductivity of 572 backedges. 112 proven. 0 refuted. 0 times theorem prover too weak. 460 trivial. 0 not checked.
[2023-12-25 22:48:04,289 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 22:48:04,289 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 22:48:04,290 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1617924104]
[2023-12-25 22:48:04,290 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 22:48:04,290 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2141018603]
[2023-12-25 22:48:04,290 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [2141018603] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 22:48:04,290 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 22:48:04,290 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-12-25 22:48:04,290 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1627595150]
[2023-12-25 22:48:04,290 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 22:48:04,292 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-12-25 22:48:04,293 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 22:48:04,294 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-12-25 22:48:04,294 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-12-25 22:48:04,295 INFO  L87              Difference]: Start difference. First operand 7792 states and 12952 transitions. Second operand  has 7 states, 7 states have (on average 653.8571428571429) internal successors, (4577), 7 states have internal predecessors, (4577), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:48:04,606 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 22:48:04,607 INFO  L93              Difference]: Finished difference Result 21206 states and 35241 transitions.
[2023-12-25 22:48:04,607 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-12-25 22:48:04,608 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 653.8571428571429) internal successors, (4577), 7 states have internal predecessors, (4577), 0 states have call successors, (0), 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 5036
[2023-12-25 22:48:04,611 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 22:48:04,623 INFO  L225             Difference]: With dead ends: 21206
[2023-12-25 22:48:04,624 INFO  L226             Difference]: Without dead ends: 14344
[2023-12-25 22:48:04,630 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5045 GetRequests, 5033 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-12-25 22:48:04,632 INFO  L413           NwaCegarLoop]: 12524 mSDtfsCounter, 31816 mSDsluCounter, 48930 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31816 SdHoareTripleChecker+Valid, 61454 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-12-25 22:48:04,632 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [31816 Valid, 61454 Invalid, 48 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-12-25 22:48:04,641 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14344 states.
[2023-12-25 22:48:04,703 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14344 to 7797.
[2023-12-25 22:48:04,709 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7797 states, 7796 states have (on average 1.6622626988199076) internal successors, (12959), 7796 states have internal predecessors, (12959), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:48:04,715 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7797 states to 7797 states and 12959 transitions.
[2023-12-25 22:48:04,715 INFO  L78                 Accepts]: Start accepts. Automaton has 7797 states and 12959 transitions. Word has length 5036
[2023-12-25 22:48:04,717 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 22:48:04,717 INFO  L495      AbstractCegarLoop]: Abstraction has 7797 states and 12959 transitions.
[2023-12-25 22:48:04,718 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 653.8571428571429) internal successors, (4577), 7 states have internal predecessors, (4577), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:48:04,718 INFO  L276                IsEmpty]: Start isEmpty. Operand 7797 states and 12959 transitions.
[2023-12-25 22:48:04,842 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5038
[2023-12-25 22:48:04,842 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 22:48:04,843 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-12-25 22:48:04,902 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Forceful destruction successful, exit code 0
[2023-12-25 22:48:05,056 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43,42 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 22:48:05,056 INFO  L420      AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 22:48:05,057 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 22:48:05,057 INFO  L85        PathProgramCache]: Analyzing trace with hash -1762249174, now seen corresponding path program 1 times
[2023-12-25 22:48:05,057 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 22:48:05,057 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1266829868]
[2023-12-25 22:48:05,058 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:48:05,058 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 22:48:05,373 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 22:48:05,373 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [50856106]
[2023-12-25 22:48:05,374 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:48:05,374 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 22:48:05,374 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 22:48:05,375 INFO  L229       MonitoredProcess]: Starting monitored process 43 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-25 22:48:05,376 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Waiting until timeout for monitored process
[2023-12-25 22:48:10,514 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 22:48:10,643 INFO  L262         TraceCheckSpWp]: Trace formula consists of 22474 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-12-25 22:48:10,688 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 22:48:10,894 INFO  L134       CoverageAnalysis]: Checked inductivity of 572 backedges. 116 proven. 0 refuted. 0 times theorem prover too weak. 456 trivial. 0 not checked.
[2023-12-25 22:48:10,894 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 22:48:10,894 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 22:48:10,895 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1266829868]
[2023-12-25 22:48:10,895 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 22:48:10,895 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [50856106]
[2023-12-25 22:48:10,895 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [50856106] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 22:48:10,895 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 22:48:10,895 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-12-25 22:48:10,895 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [769906221]
[2023-12-25 22:48:10,895 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 22:48:10,897 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-12-25 22:48:10,898 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 22:48:10,899 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-12-25 22:48:10,899 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-12-25 22:48:10,900 INFO  L87              Difference]: Start difference. First operand 7797 states and 12959 transitions. Second operand  has 7 states, 7 states have (on average 654.5714285714286) internal successors, (4582), 7 states have internal predecessors, (4582), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:48:11,215 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 22:48:11,215 INFO  L93              Difference]: Finished difference Result 21221 states and 35262 transitions.
[2023-12-25 22:48:11,215 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-12-25 22:48:11,216 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 654.5714285714286) internal successors, (4582), 7 states have internal predecessors, (4582), 0 states have call successors, (0), 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 5037
[2023-12-25 22:48:11,219 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 22:48:11,233 INFO  L225             Difference]: With dead ends: 21221
[2023-12-25 22:48:11,233 INFO  L226             Difference]: Without dead ends: 14348
[2023-12-25 22:48:11,242 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5046 GetRequests, 5034 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-12-25 22:48:11,242 INFO  L413           NwaCegarLoop]: 12514 mSDtfsCounter, 31820 mSDsluCounter, 48900 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31820 SdHoareTripleChecker+Valid, 61414 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-12-25 22:48:11,242 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [31820 Valid, 61414 Invalid, 48 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-12-25 22:48:11,253 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14348 states.
[2023-12-25 22:48:11,321 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14348 to 7802.
[2023-12-25 22:48:11,327 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7802 states, 7801 states have (on average 1.662094603255993) internal successors, (12966), 7801 states have internal predecessors, (12966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:48:11,334 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7802 states to 7802 states and 12966 transitions.
[2023-12-25 22:48:11,334 INFO  L78                 Accepts]: Start accepts. Automaton has 7802 states and 12966 transitions. Word has length 5037
[2023-12-25 22:48:11,336 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 22:48:11,336 INFO  L495      AbstractCegarLoop]: Abstraction has 7802 states and 12966 transitions.
[2023-12-25 22:48:11,337 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 654.5714285714286) internal successors, (4582), 7 states have internal predecessors, (4582), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:48:11,337 INFO  L276                IsEmpty]: Start isEmpty. Operand 7802 states and 12966 transitions.
[2023-12-25 22:48:11,528 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5039
[2023-12-25 22:48:11,528 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 22:48:11,529 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-12-25 22:48:11,593 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Forceful destruction successful, exit code 0
[2023-12-25 22:48:11,752 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44,43 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 22:48:11,753 INFO  L420      AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 22:48:11,753 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 22:48:11,753 INFO  L85        PathProgramCache]: Analyzing trace with hash 1765113366, now seen corresponding path program 1 times
[2023-12-25 22:48:11,753 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 22:48:11,753 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [821849782]
[2023-12-25 22:48:11,754 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:48:11,754 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 22:48:12,043 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 22:48:12,043 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1225032234]
[2023-12-25 22:48:12,044 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:48:12,044 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 22:48:12,044 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 22:48:12,045 INFO  L229       MonitoredProcess]: Starting monitored process 44 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-25 22:48:12,047 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Waiting until timeout for monitored process
[2023-12-25 22:48:16,949 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 22:48:17,081 INFO  L262         TraceCheckSpWp]: Trace formula consists of 22478 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-12-25 22:48:17,128 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 22:48:17,334 INFO  L134       CoverageAnalysis]: Checked inductivity of 572 backedges. 120 proven. 0 refuted. 0 times theorem prover too weak. 452 trivial. 0 not checked.
[2023-12-25 22:48:17,335 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 22:48:17,335 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 22:48:17,335 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [821849782]
[2023-12-25 22:48:17,335 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 22:48:17,335 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1225032234]
[2023-12-25 22:48:17,335 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1225032234] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 22:48:17,335 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 22:48:17,335 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-12-25 22:48:17,335 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1478579952]
[2023-12-25 22:48:17,335 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 22:48:17,338 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-12-25 22:48:17,338 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 22:48:17,339 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-12-25 22:48:17,339 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-12-25 22:48:17,340 INFO  L87              Difference]: Start difference. First operand 7802 states and 12966 transitions. Second operand  has 7 states, 7 states have (on average 655.2857142857143) internal successors, (4587), 7 states have internal predecessors, (4587), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:48:17,653 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 22:48:17,653 INFO  L93              Difference]: Finished difference Result 21236 states and 35283 transitions.
[2023-12-25 22:48:17,653 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-12-25 22:48:17,654 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 655.2857142857143) internal successors, (4587), 7 states have internal predecessors, (4587), 0 states have call successors, (0), 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 5038
[2023-12-25 22:48:17,657 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 22:48:17,669 INFO  L225             Difference]: With dead ends: 21236
[2023-12-25 22:48:17,669 INFO  L226             Difference]: Without dead ends: 14352
[2023-12-25 22:48:17,676 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5047 GetRequests, 5035 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-12-25 22:48:17,677 INFO  L413           NwaCegarLoop]: 12504 mSDtfsCounter, 31824 mSDsluCounter, 48870 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31824 SdHoareTripleChecker+Valid, 61374 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-12-25 22:48:17,677 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [31824 Valid, 61374 Invalid, 48 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-12-25 22:48:17,686 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14352 states.
[2023-12-25 22:48:17,751 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14352 to 7807.
[2023-12-25 22:48:17,757 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7807 states, 7806 states have (on average 1.661926723033564) internal successors, (12973), 7806 states have internal predecessors, (12973), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:48:17,762 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7807 states to 7807 states and 12973 transitions.
[2023-12-25 22:48:17,763 INFO  L78                 Accepts]: Start accepts. Automaton has 7807 states and 12973 transitions. Word has length 5038
[2023-12-25 22:48:17,765 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 22:48:17,765 INFO  L495      AbstractCegarLoop]: Abstraction has 7807 states and 12973 transitions.
[2023-12-25 22:48:17,766 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 655.2857142857143) internal successors, (4587), 7 states have internal predecessors, (4587), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:48:17,766 INFO  L276                IsEmpty]: Start isEmpty. Operand 7807 states and 12973 transitions.
[2023-12-25 22:48:17,888 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5040
[2023-12-25 22:48:17,889 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 22:48:17,890 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-12-25 22:48:17,953 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Forceful destruction successful, exit code 0
[2023-12-25 22:48:18,109 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable45
[2023-12-25 22:48:18,109 INFO  L420      AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 22:48:18,110 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 22:48:18,110 INFO  L85        PathProgramCache]: Analyzing trace with hash -83762212, now seen corresponding path program 1 times
[2023-12-25 22:48:18,110 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 22:48:18,110 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [268280973]
[2023-12-25 22:48:18,111 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:48:18,111 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 22:48:18,419 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 22:48:18,419 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1726381483]
[2023-12-25 22:48:18,421 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:48:18,421 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 22:48:18,421 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 22:48:18,422 INFO  L229       MonitoredProcess]: Starting monitored process 45 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-25 22:48:18,446 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Waiting until timeout for monitored process
[2023-12-25 22:48:23,666 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 22:48:23,802 INFO  L262         TraceCheckSpWp]: Trace formula consists of 22481 conjuncts, 21 conjunts are in the unsatisfiable core
[2023-12-25 22:48:23,858 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 22:48:24,039 INFO  L134       CoverageAnalysis]: Checked inductivity of 572 backedges. 124 proven. 0 refuted. 0 times theorem prover too weak. 448 trivial. 0 not checked.
[2023-12-25 22:48:24,039 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 22:48:24,039 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 22:48:24,039 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [268280973]
[2023-12-25 22:48:24,039 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 22:48:24,039 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1726381483]
[2023-12-25 22:48:24,039 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1726381483] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 22:48:24,039 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 22:48:24,040 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8
[2023-12-25 22:48:24,040 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1045814654]
[2023-12-25 22:48:24,040 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 22:48:24,042 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 8 states
[2023-12-25 22:48:24,042 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 22:48:24,044 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2023-12-25 22:48:24,044 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56
[2023-12-25 22:48:24,044 INFO  L87              Difference]: Start difference. First operand 7807 states and 12973 transitions. Second operand  has 8 states, 8 states have (on average 574.0) internal successors, (4592), 8 states have internal predecessors, (4592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:48:24,417 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 22:48:24,418 INFO  L93              Difference]: Finished difference Result 21253 states and 35306 transitions.
[2023-12-25 22:48:24,418 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. 
[2023-12-25 22:48:24,419 INFO  L78                 Accepts]: Start accepts. Automaton has  has 8 states, 8 states have (on average 574.0) internal successors, (4592), 8 states have internal predecessors, (4592), 0 states have call successors, (0), 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 5039
[2023-12-25 22:48:24,422 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 22:48:24,434 INFO  L225             Difference]: With dead ends: 21253
[2023-12-25 22:48:24,434 INFO  L226             Difference]: Without dead ends: 14358
[2023-12-25 22:48:24,441 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5049 GetRequests, 5035 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240
[2023-12-25 22:48:24,441 INFO  L413           NwaCegarLoop]: 12493 mSDtfsCounter, 31830 mSDsluCounter, 59689 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31830 SdHoareTripleChecker+Valid, 72182 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-12-25 22:48:24,441 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [31830 Valid, 72182 Invalid, 66 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-12-25 22:48:24,450 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14358 states.
[2023-12-25 22:48:24,513 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14358 to 7812.
[2023-12-25 22:48:24,519 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7812 states, 7811 states have (on average 1.661759057739086) internal successors, (12980), 7811 states have internal predecessors, (12980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:48:24,525 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7812 states to 7812 states and 12980 transitions.
[2023-12-25 22:48:24,525 INFO  L78                 Accepts]: Start accepts. Automaton has 7812 states and 12980 transitions. Word has length 5039
[2023-12-25 22:48:24,527 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 22:48:24,528 INFO  L495      AbstractCegarLoop]: Abstraction has 7812 states and 12980 transitions.
[2023-12-25 22:48:24,529 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 8 states, 8 states have (on average 574.0) internal successors, (4592), 8 states have internal predecessors, (4592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:48:24,529 INFO  L276                IsEmpty]: Start isEmpty. Operand 7812 states and 12980 transitions.
[2023-12-25 22:48:24,730 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5041
[2023-12-25 22:48:24,730 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 22:48:24,731 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-12-25 22:48:24,792 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Forceful destruction successful, exit code 0
[2023-12-25 22:48:24,932 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable46
[2023-12-25 22:48:24,932 INFO  L420      AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 22:48:24,932 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 22:48:24,933 INFO  L85        PathProgramCache]: Analyzing trace with hash -432641952, now seen corresponding path program 1 times
[2023-12-25 22:48:24,935 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 22:48:24,935 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1029585330]
[2023-12-25 22:48:24,935 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:48:24,935 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 22:48:25,237 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 22:48:25,237 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1703946587]
[2023-12-25 22:48:25,238 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:48:25,238 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 22:48:25,238 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 22:48:25,239 INFO  L229       MonitoredProcess]: Starting monitored process 46 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-25 22:48:25,240 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Waiting until timeout for monitored process
[2023-12-25 22:48:30,158 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 22:48:30,301 INFO  L262         TraceCheckSpWp]: Trace formula consists of 22485 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-12-25 22:48:30,356 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 22:48:30,568 INFO  L134       CoverageAnalysis]: Checked inductivity of 572 backedges. 128 proven. 0 refuted. 0 times theorem prover too weak. 444 trivial. 0 not checked.
[2023-12-25 22:48:30,568 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 22:48:30,568 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 22:48:30,568 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1029585330]
[2023-12-25 22:48:30,568 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 22:48:30,568 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1703946587]
[2023-12-25 22:48:30,569 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1703946587] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 22:48:30,569 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 22:48:30,569 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-12-25 22:48:30,569 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1397219281]
[2023-12-25 22:48:30,569 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 22:48:30,571 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-12-25 22:48:30,571 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 22:48:30,573 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-12-25 22:48:30,573 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-12-25 22:48:30,573 INFO  L87              Difference]: Start difference. First operand 7812 states and 12980 transitions. Second operand  has 7 states, 7 states have (on average 656.7142857142857) internal successors, (4597), 7 states have internal predecessors, (4597), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:48:30,891 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 22:48:30,891 INFO  L93              Difference]: Finished difference Result 21266 states and 35325 transitions.
[2023-12-25 22:48:30,891 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-12-25 22:48:30,892 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 656.7142857142857) internal successors, (4597), 7 states have internal predecessors, (4597), 0 states have call successors, (0), 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 5040
[2023-12-25 22:48:30,895 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 22:48:30,908 INFO  L225             Difference]: With dead ends: 21266
[2023-12-25 22:48:30,908 INFO  L226             Difference]: Without dead ends: 14360
[2023-12-25 22:48:30,915 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5049 GetRequests, 5037 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-12-25 22:48:30,916 INFO  L413           NwaCegarLoop]: 12484 mSDtfsCounter, 31832 mSDsluCounter, 48810 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31832 SdHoareTripleChecker+Valid, 61294 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-12-25 22:48:30,916 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [31832 Valid, 61294 Invalid, 48 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-12-25 22:48:30,925 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14360 states.
[2023-12-25 22:48:30,990 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14360 to 7817.
[2023-12-25 22:48:30,996 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7817 states, 7816 states have (on average 1.6615916069600818) internal successors, (12987), 7816 states have internal predecessors, (12987), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:48:31,002 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7817 states to 7817 states and 12987 transitions.
[2023-12-25 22:48:31,002 INFO  L78                 Accepts]: Start accepts. Automaton has 7817 states and 12987 transitions. Word has length 5040
[2023-12-25 22:48:31,004 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 22:48:31,004 INFO  L495      AbstractCegarLoop]: Abstraction has 7817 states and 12987 transitions.
[2023-12-25 22:48:31,005 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 656.7142857142857) internal successors, (4597), 7 states have internal predecessors, (4597), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:48:31,005 INFO  L276                IsEmpty]: Start isEmpty. Operand 7817 states and 12987 transitions.
[2023-12-25 22:48:31,127 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5042
[2023-12-25 22:48:31,128 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 22:48:31,129 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-12-25 22:48:31,192 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Forceful destruction successful, exit code 0
[2023-12-25 22:48:31,356 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable47
[2023-12-25 22:48:31,357 INFO  L420      AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 22:48:31,357 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 22:48:31,357 INFO  L85        PathProgramCache]: Analyzing trace with hash -1966862834, now seen corresponding path program 1 times
[2023-12-25 22:48:31,357 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 22:48:31,357 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [254758700]
[2023-12-25 22:48:31,358 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:48:31,358 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 22:48:31,649 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 22:48:31,649 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [600943150]
[2023-12-25 22:48:31,650 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:48:31,650 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 22:48:31,650 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 22:48:31,651 INFO  L229       MonitoredProcess]: Starting monitored process 47 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-25 22:48:31,652 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Waiting until timeout for monitored process
[2023-12-25 22:48:36,878 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 22:48:37,016 INFO  L262         TraceCheckSpWp]: Trace formula consists of 22488 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-12-25 22:48:37,077 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 22:48:37,258 INFO  L134       CoverageAnalysis]: Checked inductivity of 572 backedges. 132 proven. 0 refuted. 0 times theorem prover too weak. 440 trivial. 0 not checked.
[2023-12-25 22:48:37,258 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 22:48:37,258 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 22:48:37,258 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [254758700]
[2023-12-25 22:48:37,258 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 22:48:37,258 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [600943150]
[2023-12-25 22:48:37,258 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [600943150] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 22:48:37,258 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 22:48:37,259 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-12-25 22:48:37,259 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1142033790]
[2023-12-25 22:48:37,259 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 22:48:37,261 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-12-25 22:48:37,261 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 22:48:37,263 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-12-25 22:48:37,263 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-12-25 22:48:37,264 INFO  L87              Difference]: Start difference. First operand 7817 states and 12987 transitions. Second operand  has 7 states, 7 states have (on average 657.4285714285714) internal successors, (4602), 7 states have internal predecessors, (4602), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:48:37,597 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 22:48:37,597 INFO  L93              Difference]: Finished difference Result 21281 states and 35346 transitions.
[2023-12-25 22:48:37,597 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-12-25 22:48:37,598 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 657.4285714285714) internal successors, (4602), 7 states have internal predecessors, (4602), 0 states have call successors, (0), 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 5041
[2023-12-25 22:48:37,601 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 22:48:37,614 INFO  L225             Difference]: With dead ends: 21281
[2023-12-25 22:48:37,615 INFO  L226             Difference]: Without dead ends: 14364
[2023-12-25 22:48:37,622 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5050 GetRequests, 5038 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-12-25 22:48:37,649 INFO  L413           NwaCegarLoop]: 12474 mSDtfsCounter, 31836 mSDsluCounter, 48780 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31836 SdHoareTripleChecker+Valid, 61254 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-12-25 22:48:37,649 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [31836 Valid, 61254 Invalid, 48 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-12-25 22:48:37,660 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14364 states.
[2023-12-25 22:48:37,743 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14364 to 7822.
[2023-12-25 22:48:37,748 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7822 states, 7821 states have (on average 1.6614243702851297) internal successors, (12994), 7821 states have internal predecessors, (12994), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:48:37,754 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7822 states to 7822 states and 12994 transitions.
[2023-12-25 22:48:37,754 INFO  L78                 Accepts]: Start accepts. Automaton has 7822 states and 12994 transitions. Word has length 5041
[2023-12-25 22:48:37,757 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 22:48:37,757 INFO  L495      AbstractCegarLoop]: Abstraction has 7822 states and 12994 transitions.
[2023-12-25 22:48:37,757 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 657.4285714285714) internal successors, (4602), 7 states have internal predecessors, (4602), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:48:37,758 INFO  L276                IsEmpty]: Start isEmpty. Operand 7822 states and 12994 transitions.
[2023-12-25 22:48:37,879 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5043
[2023-12-25 22:48:37,879 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 22:48:37,880 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-12-25 22:48:37,940 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Forceful destruction successful, exit code 0
[2023-12-25 22:48:38,084 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48,47 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 22:48:38,084 INFO  L420      AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 22:48:38,085 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 22:48:38,085 INFO  L85        PathProgramCache]: Analyzing trace with hash 64908074, now seen corresponding path program 1 times
[2023-12-25 22:48:38,085 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 22:48:38,085 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [175819649]
[2023-12-25 22:48:38,086 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:48:38,086 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 22:48:38,438 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 22:48:38,438 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1863726893]
[2023-12-25 22:48:38,440 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:48:38,440 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 22:48:38,440 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 22:48:38,441 INFO  L229       MonitoredProcess]: Starting monitored process 48 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-25 22:48:38,442 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Waiting until timeout for monitored process
[2023-12-25 22:48:43,777 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 22:48:43,936 INFO  L262         TraceCheckSpWp]: Trace formula consists of 22492 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-12-25 22:48:43,990 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 22:48:44,164 INFO  L134       CoverageAnalysis]: Checked inductivity of 572 backedges. 136 proven. 0 refuted. 0 times theorem prover too weak. 436 trivial. 0 not checked.
[2023-12-25 22:48:44,165 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 22:48:44,165 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 22:48:44,165 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [175819649]
[2023-12-25 22:48:44,165 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 22:48:44,165 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1863726893]
[2023-12-25 22:48:44,165 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1863726893] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 22:48:44,165 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 22:48:44,165 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-12-25 22:48:44,166 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [339816094]
[2023-12-25 22:48:44,166 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 22:48:44,168 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-12-25 22:48:44,168 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 22:48:44,170 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-12-25 22:48:44,170 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-12-25 22:48:44,170 INFO  L87              Difference]: Start difference. First operand 7822 states and 12994 transitions. Second operand  has 7 states, 7 states have (on average 658.1428571428571) internal successors, (4607), 7 states have internal predecessors, (4607), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:48:44,498 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 22:48:44,498 INFO  L93              Difference]: Finished difference Result 21296 states and 35367 transitions.
[2023-12-25 22:48:44,498 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-12-25 22:48:44,499 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 658.1428571428571) internal successors, (4607), 7 states have internal predecessors, (4607), 0 states have call successors, (0), 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 5042
[2023-12-25 22:48:44,502 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 22:48:44,514 INFO  L225             Difference]: With dead ends: 21296
[2023-12-25 22:48:44,515 INFO  L226             Difference]: Without dead ends: 14368
[2023-12-25 22:48:44,522 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5051 GetRequests, 5039 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-12-25 22:48:44,523 INFO  L413           NwaCegarLoop]: 12464 mSDtfsCounter, 31840 mSDsluCounter, 48750 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31840 SdHoareTripleChecker+Valid, 61214 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-12-25 22:48:44,523 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [31840 Valid, 61214 Invalid, 48 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-12-25 22:48:44,533 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14368 states.
[2023-12-25 22:48:44,604 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14368 to 7827.
[2023-12-25 22:48:44,610 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7827 states, 7826 states have (on average 1.661257347303859) internal successors, (13001), 7826 states have internal predecessors, (13001), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:48:44,617 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7827 states to 7827 states and 13001 transitions.
[2023-12-25 22:48:44,617 INFO  L78                 Accepts]: Start accepts. Automaton has 7827 states and 13001 transitions. Word has length 5042
[2023-12-25 22:48:44,619 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 22:48:44,620 INFO  L495      AbstractCegarLoop]: Abstraction has 7827 states and 13001 transitions.
[2023-12-25 22:48:44,621 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 658.1428571428571) internal successors, (4607), 7 states have internal predecessors, (4607), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:48:44,621 INFO  L276                IsEmpty]: Start isEmpty. Operand 7827 states and 13001 transitions.
[2023-12-25 22:48:44,875 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5044
[2023-12-25 22:48:44,875 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 22:48:44,876 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-12-25 22:48:44,936 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Forceful destruction successful, exit code 0
[2023-12-25 22:48:45,084 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 48 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable49
[2023-12-25 22:48:45,087 INFO  L420      AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 22:48:45,087 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 22:48:45,088 INFO  L85        PathProgramCache]: Analyzing trace with hash 64640192, now seen corresponding path program 1 times
[2023-12-25 22:48:45,088 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 22:48:45,088 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [901436608]
[2023-12-25 22:48:45,089 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:48:45,089 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 22:48:45,531 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 22:48:45,531 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1271042916]
[2023-12-25 22:48:45,532 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:48:45,533 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 22:48:45,533 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 22:48:45,534 INFO  L229       MonitoredProcess]: Starting monitored process 49 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-25 22:48:45,574 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Waiting until timeout for monitored process
[2023-12-25 22:48:50,950 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 22:48:51,109 INFO  L262         TraceCheckSpWp]: Trace formula consists of 22495 conjuncts, 21 conjunts are in the unsatisfiable core
[2023-12-25 22:48:51,174 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 22:48:51,476 INFO  L134       CoverageAnalysis]: Checked inductivity of 572 backedges. 140 proven. 0 refuted. 0 times theorem prover too weak. 432 trivial. 0 not checked.
[2023-12-25 22:48:51,476 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 22:48:51,476 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 22:48:51,476 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [901436608]
[2023-12-25 22:48:51,476 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 22:48:51,476 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1271042916]
[2023-12-25 22:48:51,476 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1271042916] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 22:48:51,476 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 22:48:51,477 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8
[2023-12-25 22:48:51,477 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1683653415]
[2023-12-25 22:48:51,477 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 22:48:51,479 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 8 states
[2023-12-25 22:48:51,479 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 22:48:51,481 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2023-12-25 22:48:51,481 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56
[2023-12-25 22:48:51,481 INFO  L87              Difference]: Start difference. First operand 7827 states and 13001 transitions. Second operand  has 8 states, 8 states have (on average 576.5) internal successors, (4612), 8 states have internal predecessors, (4612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:48:51,978 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 22:48:51,978 INFO  L93              Difference]: Finished difference Result 21313 states and 35390 transitions.
[2023-12-25 22:48:51,978 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. 
[2023-12-25 22:48:51,980 INFO  L78                 Accepts]: Start accepts. Automaton has  has 8 states, 8 states have (on average 576.5) internal successors, (4612), 8 states have internal predecessors, (4612), 0 states have call successors, (0), 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 5043
[2023-12-25 22:48:51,983 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 22:48:51,992 INFO  L225             Difference]: With dead ends: 21313
[2023-12-25 22:48:51,992 INFO  L226             Difference]: Without dead ends: 14374
[2023-12-25 22:48:51,997 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5053 GetRequests, 5039 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240
[2023-12-25 22:48:51,997 INFO  L413           NwaCegarLoop]: 12453 mSDtfsCounter, 31843 mSDsluCounter, 61163 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31843 SdHoareTripleChecker+Valid, 73616 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-12-25 22:48:52,007 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [31843 Valid, 73616 Invalid, 74 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [2 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-12-25 22:48:52,016 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14374 states.
[2023-12-25 22:48:52,076 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14374 to 7832.
[2023-12-25 22:48:52,082 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7832 states, 7831 states have (on average 1.6610905376069467) internal successors, (13008), 7831 states have internal predecessors, (13008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:48:52,089 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7832 states to 7832 states and 13008 transitions.
[2023-12-25 22:48:52,089 INFO  L78                 Accepts]: Start accepts. Automaton has 7832 states and 13008 transitions. Word has length 5043
[2023-12-25 22:48:52,091 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 22:48:52,091 INFO  L495      AbstractCegarLoop]: Abstraction has 7832 states and 13008 transitions.
[2023-12-25 22:48:52,092 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 8 states, 8 states have (on average 576.5) internal successors, (4612), 8 states have internal predecessors, (4612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:48:52,092 INFO  L276                IsEmpty]: Start isEmpty. Operand 7832 states and 13008 transitions.
[2023-12-25 22:48:52,216 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5045
[2023-12-25 22:48:52,216 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 22:48:52,217 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-12-25 22:48:52,277 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Forceful destruction successful, exit code 0
[2023-12-25 22:48:52,432 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50,49 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 22:48:52,432 INFO  L420      AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 22:48:52,433 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 22:48:52,433 INFO  L85        PathProgramCache]: Analyzing trace with hash 373401204, now seen corresponding path program 1 times
[2023-12-25 22:48:52,433 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 22:48:52,433 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1852161617]
[2023-12-25 22:48:52,434 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:48:52,434 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 22:48:52,802 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 22:48:52,802 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1172122464]
[2023-12-25 22:48:52,803 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:48:52,803 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 22:48:52,803 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 22:48:52,804 INFO  L229       MonitoredProcess]: Starting monitored process 50 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-25 22:48:52,811 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Waiting until timeout for monitored process
[2023-12-25 22:48:57,716 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 22:48:57,849 INFO  L262         TraceCheckSpWp]: Trace formula consists of 22499 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-12-25 22:48:57,902 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 22:48:58,235 INFO  L134       CoverageAnalysis]: Checked inductivity of 572 backedges. 144 proven. 0 refuted. 0 times theorem prover too weak. 428 trivial. 0 not checked.
[2023-12-25 22:48:58,235 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 22:48:58,235 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 22:48:58,235 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1852161617]
[2023-12-25 22:48:58,235 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 22:48:58,235 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1172122464]
[2023-12-25 22:48:58,235 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1172122464] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 22:48:58,236 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 22:48:58,236 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-12-25 22:48:58,236 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [307917787]
[2023-12-25 22:48:58,236 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 22:48:58,238 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-12-25 22:48:58,238 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 22:48:58,242 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-12-25 22:48:58,242 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-12-25 22:48:58,242 INFO  L87              Difference]: Start difference. First operand 7832 states and 13008 transitions. Second operand  has 7 states, 7 states have (on average 659.5714285714286) internal successors, (4617), 7 states have internal predecessors, (4617), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:48:58,565 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 22:48:58,565 INFO  L93              Difference]: Finished difference Result 21326 states and 35409 transitions.
[2023-12-25 22:48:58,565 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-12-25 22:48:58,567 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 659.5714285714286) internal successors, (4617), 7 states have internal predecessors, (4617), 0 states have call successors, (0), 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 5044
[2023-12-25 22:48:58,570 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 22:48:58,582 INFO  L225             Difference]: With dead ends: 21326
[2023-12-25 22:48:58,582 INFO  L226             Difference]: Without dead ends: 14376
[2023-12-25 22:48:58,590 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5053 GetRequests, 5041 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-12-25 22:48:58,591 INFO  L413           NwaCegarLoop]: 12444 mSDtfsCounter, 31848 mSDsluCounter, 48690 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31848 SdHoareTripleChecker+Valid, 61134 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-12-25 22:48:58,591 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [31848 Valid, 61134 Invalid, 48 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-12-25 22:48:58,600 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14376 states.
[2023-12-25 22:48:58,662 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14376 to 7837.
[2023-12-25 22:48:58,667 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7837 states, 7836 states have (on average 1.6609239407861154) internal successors, (13015), 7836 states have internal predecessors, (13015), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:48:58,674 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7837 states to 7837 states and 13015 transitions.
[2023-12-25 22:48:58,674 INFO  L78                 Accepts]: Start accepts. Automaton has 7837 states and 13015 transitions. Word has length 5044
[2023-12-25 22:48:58,676 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 22:48:58,676 INFO  L495      AbstractCegarLoop]: Abstraction has 7837 states and 13015 transitions.
[2023-12-25 22:48:58,677 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 659.5714285714286) internal successors, (4617), 7 states have internal predecessors, (4617), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:48:58,677 INFO  L276                IsEmpty]: Start isEmpty. Operand 7837 states and 13015 transitions.
[2023-12-25 22:48:58,865 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5046
[2023-12-25 22:48:58,865 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 22:48:58,866 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-12-25 22:48:58,924 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Forceful destruction successful, exit code 0
[2023-12-25 22:48:59,072 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 50 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable51
[2023-12-25 22:48:59,073 INFO  L420      AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 22:48:59,073 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 22:48:59,073 INFO  L85        PathProgramCache]: Analyzing trace with hash 613046258, now seen corresponding path program 1 times
[2023-12-25 22:48:59,073 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 22:48:59,073 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [485134856]
[2023-12-25 22:48:59,074 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:48:59,074 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 22:48:59,378 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 22:48:59,379 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2051023124]
[2023-12-25 22:48:59,380 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:48:59,380 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 22:48:59,380 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 22:48:59,381 INFO  L229       MonitoredProcess]: Starting monitored process 51 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-25 22:48:59,382 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Waiting until timeout for monitored process
[2023-12-25 22:49:04,604 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 22:49:04,725 INFO  L262         TraceCheckSpWp]: Trace formula consists of 22502 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-12-25 22:49:04,765 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 22:49:04,972 INFO  L134       CoverageAnalysis]: Checked inductivity of 572 backedges. 148 proven. 0 refuted. 0 times theorem prover too weak. 424 trivial. 0 not checked.
[2023-12-25 22:49:04,972 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 22:49:04,972 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 22:49:04,972 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [485134856]
[2023-12-25 22:49:04,972 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 22:49:04,972 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2051023124]
[2023-12-25 22:49:04,972 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [2051023124] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 22:49:04,973 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 22:49:04,973 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-12-25 22:49:04,974 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [751824929]
[2023-12-25 22:49:04,974 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 22:49:04,976 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-12-25 22:49:04,976 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 22:49:04,977 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-12-25 22:49:04,978 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-12-25 22:49:04,978 INFO  L87              Difference]: Start difference. First operand 7837 states and 13015 transitions. Second operand  has 7 states, 7 states have (on average 660.2857142857143) internal successors, (4622), 7 states have internal predecessors, (4622), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:49:05,292 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 22:49:05,292 INFO  L93              Difference]: Finished difference Result 21341 states and 35430 transitions.
[2023-12-25 22:49:05,292 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-12-25 22:49:05,293 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 660.2857142857143) internal successors, (4622), 7 states have internal predecessors, (4622), 0 states have call successors, (0), 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 5045
[2023-12-25 22:49:05,296 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 22:49:05,308 INFO  L225             Difference]: With dead ends: 21341
[2023-12-25 22:49:05,308 INFO  L226             Difference]: Without dead ends: 14380
[2023-12-25 22:49:05,314 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5054 GetRequests, 5042 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-12-25 22:49:05,315 INFO  L413           NwaCegarLoop]: 12434 mSDtfsCounter, 31852 mSDsluCounter, 48660 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31852 SdHoareTripleChecker+Valid, 61094 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-12-25 22:49:05,315 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [31852 Valid, 61094 Invalid, 48 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-12-25 22:49:05,323 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14380 states.
[2023-12-25 22:49:05,385 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14380 to 7842.
[2023-12-25 22:49:05,390 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7842 states, 7841 states have (on average 1.6607575564341284) internal successors, (13022), 7841 states have internal predecessors, (13022), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:49:05,396 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7842 states to 7842 states and 13022 transitions.
[2023-12-25 22:49:05,397 INFO  L78                 Accepts]: Start accepts. Automaton has 7842 states and 13022 transitions. Word has length 5045
[2023-12-25 22:49:05,399 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 22:49:05,399 INFO  L495      AbstractCegarLoop]: Abstraction has 7842 states and 13022 transitions.
[2023-12-25 22:49:05,400 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 660.2857142857143) internal successors, (4622), 7 states have internal predecessors, (4622), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:49:05,400 INFO  L276                IsEmpty]: Start isEmpty. Operand 7842 states and 13022 transitions.
[2023-12-25 22:49:05,582 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5047
[2023-12-25 22:49:05,583 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 22:49:05,584 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-12-25 22:49:05,642 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Ended with exit code 0
[2023-12-25 22:49:05,812 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 51 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable52
[2023-12-25 22:49:05,812 INFO  L420      AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 22:49:05,813 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 22:49:05,813 INFO  L85        PathProgramCache]: Analyzing trace with hash 1939618366, now seen corresponding path program 1 times
[2023-12-25 22:49:05,813 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 22:49:05,813 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [838609475]
[2023-12-25 22:49:05,814 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:49:05,814 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 22:49:06,114 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 22:49:06,114 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [583888288]
[2023-12-25 22:49:06,115 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:49:06,115 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 22:49:06,116 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 22:49:06,116 INFO  L229       MonitoredProcess]: Starting monitored process 52 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-25 22:49:06,118 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Waiting until timeout for monitored process
[2023-12-25 22:49:11,270 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 22:49:11,397 INFO  L262         TraceCheckSpWp]: Trace formula consists of 22506 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-12-25 22:49:11,444 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 22:49:11,651 INFO  L134       CoverageAnalysis]: Checked inductivity of 572 backedges. 152 proven. 0 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked.
[2023-12-25 22:49:11,651 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 22:49:11,651 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 22:49:11,651 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [838609475]
[2023-12-25 22:49:11,651 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 22:49:11,651 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [583888288]
[2023-12-25 22:49:11,652 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [583888288] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 22:49:11,652 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 22:49:11,652 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-12-25 22:49:11,652 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1419636099]
[2023-12-25 22:49:11,652 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 22:49:11,654 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-12-25 22:49:11,654 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 22:49:11,656 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-12-25 22:49:11,656 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-12-25 22:49:11,656 INFO  L87              Difference]: Start difference. First operand 7842 states and 13022 transitions. Second operand  has 7 states, 7 states have (on average 661.0) internal successors, (4627), 7 states have internal predecessors, (4627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:49:11,977 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 22:49:11,977 INFO  L93              Difference]: Finished difference Result 21356 states and 35451 transitions.
[2023-12-25 22:49:11,978 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-12-25 22:49:11,979 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 661.0) internal successors, (4627), 7 states have internal predecessors, (4627), 0 states have call successors, (0), 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 5046
[2023-12-25 22:49:11,982 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 22:49:11,994 INFO  L225             Difference]: With dead ends: 21356
[2023-12-25 22:49:11,995 INFO  L226             Difference]: Without dead ends: 14384
[2023-12-25 22:49:12,002 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5055 GetRequests, 5043 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-12-25 22:49:12,003 INFO  L413           NwaCegarLoop]: 12424 mSDtfsCounter, 31856 mSDsluCounter, 48630 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31856 SdHoareTripleChecker+Valid, 61054 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-12-25 22:49:12,003 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [31856 Valid, 61054 Invalid, 48 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-12-25 22:49:12,012 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14384 states.
[2023-12-25 22:49:12,079 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14384 to 7847.
[2023-12-25 22:49:12,087 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7847 states, 7846 states have (on average 1.6605913841447872) internal successors, (13029), 7846 states have internal predecessors, (13029), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:49:12,095 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7847 states to 7847 states and 13029 transitions.
[2023-12-25 22:49:12,095 INFO  L78                 Accepts]: Start accepts. Automaton has 7847 states and 13029 transitions. Word has length 5046
[2023-12-25 22:49:12,097 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 22:49:12,097 INFO  L495      AbstractCegarLoop]: Abstraction has 7847 states and 13029 transitions.
[2023-12-25 22:49:12,098 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 661.0) internal successors, (4627), 7 states have internal predecessors, (4627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:49:12,098 INFO  L276                IsEmpty]: Start isEmpty. Operand 7847 states and 13029 transitions.
[2023-12-25 22:49:12,288 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5048
[2023-12-25 22:49:12,288 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 22:49:12,289 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-12-25 22:49:12,357 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Forceful destruction successful, exit code 0
[2023-12-25 22:49:12,516 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53,52 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 22:49:12,516 INFO  L420      AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 22:49:12,517 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 22:49:12,517 INFO  L85        PathProgramCache]: Analyzing trace with hash 1841412004, now seen corresponding path program 1 times
[2023-12-25 22:49:12,517 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 22:49:12,517 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1410374901]
[2023-12-25 22:49:12,518 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:49:12,518 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 22:49:12,811 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 22:49:12,812 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1851783336]
[2023-12-25 22:49:12,813 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:49:12,813 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 22:49:12,813 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 22:49:12,814 INFO  L229       MonitoredProcess]: Starting monitored process 53 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-25 22:49:12,815 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Waiting until timeout for monitored process
[2023-12-25 22:49:17,881 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 22:49:18,029 INFO  L262         TraceCheckSpWp]: Trace formula consists of 22509 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-12-25 22:49:18,086 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 22:49:18,406 INFO  L134       CoverageAnalysis]: Checked inductivity of 572 backedges. 154 proven. 0 refuted. 0 times theorem prover too weak. 418 trivial. 0 not checked.
[2023-12-25 22:49:18,407 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 22:49:18,407 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 22:49:18,407 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1410374901]
[2023-12-25 22:49:18,407 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 22:49:18,407 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1851783336]
[2023-12-25 22:49:18,407 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1851783336] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 22:49:18,407 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 22:49:18,407 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-12-25 22:49:18,407 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [415792634]
[2023-12-25 22:49:18,407 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 22:49:18,410 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-12-25 22:49:18,410 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 22:49:18,411 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-12-25 22:49:18,411 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-12-25 22:49:18,412 INFO  L87              Difference]: Start difference. First operand 7847 states and 13029 transitions. Second operand  has 7 states, 7 states have (on average 661.4285714285714) internal successors, (4630), 7 states have internal predecessors, (4630), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:49:18,721 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 22:49:18,721 INFO  L93              Difference]: Finished difference Result 21368 states and 35467 transitions.
[2023-12-25 22:49:18,721 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-12-25 22:49:18,722 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 661.4285714285714) internal successors, (4630), 7 states have internal predecessors, (4630), 0 states have call successors, (0), 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 5047
[2023-12-25 22:49:18,725 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 22:49:18,736 INFO  L225             Difference]: With dead ends: 21368
[2023-12-25 22:49:18,736 INFO  L226             Difference]: Without dead ends: 14385
[2023-12-25 22:49:18,743 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5056 GetRequests, 5044 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-12-25 22:49:18,743 INFO  L413           NwaCegarLoop]: 12419 mSDtfsCounter, 31857 mSDsluCounter, 48615 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31857 SdHoareTripleChecker+Valid, 61034 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-12-25 22:49:18,743 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [31857 Valid, 61034 Invalid, 48 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-12-25 22:49:18,752 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14385 states.
[2023-12-25 22:49:18,818 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14385 to 7849.
[2023-12-25 22:49:18,824 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7849 states, 7848 states have (on average 1.6604230377166156) internal successors, (13031), 7848 states have internal predecessors, (13031), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:49:18,831 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7849 states to 7849 states and 13031 transitions.
[2023-12-25 22:49:18,831 INFO  L78                 Accepts]: Start accepts. Automaton has 7849 states and 13031 transitions. Word has length 5047
[2023-12-25 22:49:18,833 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 22:49:18,833 INFO  L495      AbstractCegarLoop]: Abstraction has 7849 states and 13031 transitions.
[2023-12-25 22:49:18,834 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 661.4285714285714) internal successors, (4630), 7 states have internal predecessors, (4630), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:49:18,834 INFO  L276                IsEmpty]: Start isEmpty. Operand 7849 states and 13031 transitions.
[2023-12-25 22:49:18,957 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5049
[2023-12-25 22:49:18,957 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 22:49:18,958 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-12-25 22:49:19,027 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Forceful destruction successful, exit code 0
[2023-12-25 22:49:19,172 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 53 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable54
[2023-12-25 22:49:19,172 INFO  L420      AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 22:49:19,173 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 22:49:19,173 INFO  L85        PathProgramCache]: Analyzing trace with hash 499886500, now seen corresponding path program 1 times
[2023-12-25 22:49:19,173 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 22:49:19,173 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [95354451]
[2023-12-25 22:49:19,174 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:49:19,174 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 22:49:19,585 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 22:49:19,585 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [819271300]
[2023-12-25 22:49:19,586 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:49:19,586 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 22:49:19,587 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 22:49:19,589 INFO  L229       MonitoredProcess]: Starting monitored process 54 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-25 22:49:19,590 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Waiting until timeout for monitored process
[2023-12-25 22:49:24,574 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 22:49:24,709 INFO  L262         TraceCheckSpWp]: Trace formula consists of 22512 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-12-25 22:49:24,759 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 22:49:24,993 INFO  L134       CoverageAnalysis]: Checked inductivity of 572 backedges. 158 proven. 0 refuted. 0 times theorem prover too weak. 414 trivial. 0 not checked.
[2023-12-25 22:49:24,993 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 22:49:24,993 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 22:49:24,993 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [95354451]
[2023-12-25 22:49:24,993 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 22:49:24,993 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [819271300]
[2023-12-25 22:49:24,993 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [819271300] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 22:49:24,993 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 22:49:24,994 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-12-25 22:49:24,994 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1016048897]
[2023-12-25 22:49:24,994 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 22:49:24,997 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-12-25 22:49:24,997 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 22:49:24,998 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-12-25 22:49:24,998 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-12-25 22:49:24,999 INFO  L87              Difference]: Start difference. First operand 7849 states and 13031 transitions. Second operand  has 7 states, 7 states have (on average 662.1428571428571) internal successors, (4635), 7 states have internal predecessors, (4635), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:49:25,433 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 22:49:25,433 INFO  L93              Difference]: Finished difference Result 21377 states and 35478 transitions.
[2023-12-25 22:49:25,433 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-12-25 22:49:25,435 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 662.1428571428571) internal successors, (4635), 7 states have internal predecessors, (4635), 0 states have call successors, (0), 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 5048
[2023-12-25 22:49:25,438 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 22:49:25,449 INFO  L225             Difference]: With dead ends: 21377
[2023-12-25 22:49:25,449 INFO  L226             Difference]: Without dead ends: 14389
[2023-12-25 22:49:25,455 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5057 GetRequests, 5045 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-12-25 22:49:25,460 INFO  L413           NwaCegarLoop]: 12409 mSDtfsCounter, 31859 mSDsluCounter, 48585 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31859 SdHoareTripleChecker+Valid, 60994 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-12-25 22:49:25,460 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [31859 Valid, 60994 Invalid, 48 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-12-25 22:49:25,470 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14389 states.
[2023-12-25 22:49:25,541 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14389 to 7854.
[2023-12-25 22:49:25,547 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7854 states, 7853 states have (on average 1.660257226537629) internal successors, (13038), 7853 states have internal predecessors, (13038), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:49:25,554 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7854 states to 7854 states and 13038 transitions.
[2023-12-25 22:49:25,554 INFO  L78                 Accepts]: Start accepts. Automaton has 7854 states and 13038 transitions. Word has length 5048
[2023-12-25 22:49:25,556 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 22:49:25,556 INFO  L495      AbstractCegarLoop]: Abstraction has 7854 states and 13038 transitions.
[2023-12-25 22:49:25,557 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 662.1428571428571) internal successors, (4635), 7 states have internal predecessors, (4635), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:49:25,557 INFO  L276                IsEmpty]: Start isEmpty. Operand 7854 states and 13038 transitions.
[2023-12-25 22:49:25,683 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5050
[2023-12-25 22:49:25,684 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 22:49:25,685 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-12-25 22:49:25,765 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Forceful destruction successful, exit code 0
[2023-12-25 22:49:25,890 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 54 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable55
[2023-12-25 22:49:25,890 INFO  L420      AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 22:49:25,890 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 22:49:25,891 INFO  L85        PathProgramCache]: Analyzing trace with hash 1458200664, now seen corresponding path program 1 times
[2023-12-25 22:49:25,891 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 22:49:25,891 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1300046637]
[2023-12-25 22:49:25,891 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:49:25,891 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 22:49:26,212 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 22:49:26,212 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [360036783]
[2023-12-25 22:49:26,213 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:49:26,213 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 22:49:26,213 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 22:49:26,214 INFO  L229       MonitoredProcess]: Starting monitored process 55 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-25 22:49:26,215 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Waiting until timeout for monitored process
[2023-12-25 22:49:31,329 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 22:49:31,463 INFO  L262         TraceCheckSpWp]: Trace formula consists of 22515 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-12-25 22:49:31,508 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 22:49:31,716 INFO  L134       CoverageAnalysis]: Checked inductivity of 572 backedges. 162 proven. 0 refuted. 0 times theorem prover too weak. 410 trivial. 0 not checked.
[2023-12-25 22:49:31,716 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 22:49:31,716 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 22:49:31,716 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1300046637]
[2023-12-25 22:49:31,716 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 22:49:31,716 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [360036783]
[2023-12-25 22:49:31,716 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [360036783] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 22:49:31,716 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 22:49:31,717 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-12-25 22:49:31,717 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1922013827]
[2023-12-25 22:49:31,717 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 22:49:31,719 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-12-25 22:49:31,719 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 22:49:31,721 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-12-25 22:49:31,721 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-12-25 22:49:31,721 INFO  L87              Difference]: Start difference. First operand 7854 states and 13038 transitions. Second operand  has 7 states, 7 states have (on average 662.8571428571429) internal successors, (4640), 7 states have internal predecessors, (4640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:49:32,040 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 22:49:32,040 INFO  L93              Difference]: Finished difference Result 21392 states and 35499 transitions.
[2023-12-25 22:49:32,040 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-12-25 22:49:32,041 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 662.8571428571429) internal successors, (4640), 7 states have internal predecessors, (4640), 0 states have call successors, (0), 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 5049
[2023-12-25 22:49:32,044 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 22:49:32,056 INFO  L225             Difference]: With dead ends: 21392
[2023-12-25 22:49:32,057 INFO  L226             Difference]: Without dead ends: 14393
[2023-12-25 22:49:32,064 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5058 GetRequests, 5046 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-12-25 22:49:32,064 INFO  L413           NwaCegarLoop]: 12399 mSDtfsCounter, 31863 mSDsluCounter, 48555 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31863 SdHoareTripleChecker+Valid, 60954 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-12-25 22:49:32,064 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [31863 Valid, 60954 Invalid, 48 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-12-25 22:49:32,074 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14393 states.
[2023-12-25 22:49:32,142 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14393 to 7859.
[2023-12-25 22:49:32,147 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7859 states, 7858 states have (on average 1.6600916263680325) internal successors, (13045), 7858 states have internal predecessors, (13045), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:49:32,154 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7859 states to 7859 states and 13045 transitions.
[2023-12-25 22:49:32,154 INFO  L78                 Accepts]: Start accepts. Automaton has 7859 states and 13045 transitions. Word has length 5049
[2023-12-25 22:49:32,156 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 22:49:32,156 INFO  L495      AbstractCegarLoop]: Abstraction has 7859 states and 13045 transitions.
[2023-12-25 22:49:32,157 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 662.8571428571429) internal successors, (4640), 7 states have internal predecessors, (4640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:49:32,157 INFO  L276                IsEmpty]: Start isEmpty. Operand 7859 states and 13045 transitions.
[2023-12-25 22:49:32,362 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5051
[2023-12-25 22:49:32,362 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 22:49:32,363 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-12-25 22:49:32,435 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Forceful destruction successful, exit code 0
[2023-12-25 22:49:32,588 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56,55 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 22:49:32,588 INFO  L420      AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 22:49:32,589 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 22:49:32,589 INFO  L85        PathProgramCache]: Analyzing trace with hash 1730242544, now seen corresponding path program 1 times
[2023-12-25 22:49:32,589 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 22:49:32,589 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [336344512]
[2023-12-25 22:49:32,590 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:49:32,590 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 22:49:32,911 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 22:49:32,911 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1122448408]
[2023-12-25 22:49:32,912 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:49:32,912 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 22:49:32,913 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 22:49:32,913 INFO  L229       MonitoredProcess]: Starting monitored process 56 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-25 22:49:32,915 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Waiting until timeout for monitored process
[2023-12-25 22:49:37,916 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 22:49:38,054 INFO  L262         TraceCheckSpWp]: Trace formula consists of 22518 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-12-25 22:49:38,103 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 22:49:38,448 INFO  L134       CoverageAnalysis]: Checked inductivity of 572 backedges. 166 proven. 0 refuted. 0 times theorem prover too weak. 406 trivial. 0 not checked.
[2023-12-25 22:49:38,448 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 22:49:38,449 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 22:49:38,449 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [336344512]
[2023-12-25 22:49:38,449 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 22:49:38,449 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1122448408]
[2023-12-25 22:49:38,449 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1122448408] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 22:49:38,449 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 22:49:38,449 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-12-25 22:49:38,449 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [571071069]
[2023-12-25 22:49:38,449 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 22:49:38,452 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-12-25 22:49:38,452 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 22:49:38,453 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-12-25 22:49:38,453 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-12-25 22:49:38,454 INFO  L87              Difference]: Start difference. First operand 7859 states and 13045 transitions. Second operand  has 7 states, 7 states have (on average 663.5714285714286) internal successors, (4645), 7 states have internal predecessors, (4645), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:49:38,769 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 22:49:38,769 INFO  L93              Difference]: Finished difference Result 21407 states and 35520 transitions.
[2023-12-25 22:49:38,770 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-12-25 22:49:38,771 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 663.5714285714286) internal successors, (4645), 7 states have internal predecessors, (4645), 0 states have call successors, (0), 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 5050
[2023-12-25 22:49:38,773 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 22:49:38,785 INFO  L225             Difference]: With dead ends: 21407
[2023-12-25 22:49:38,786 INFO  L226             Difference]: Without dead ends: 14397
[2023-12-25 22:49:38,793 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5059 GetRequests, 5047 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-12-25 22:49:38,793 INFO  L413           NwaCegarLoop]: 12389 mSDtfsCounter, 31867 mSDsluCounter, 48525 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31867 SdHoareTripleChecker+Valid, 60914 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-12-25 22:49:38,793 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [31867 Valid, 60914 Invalid, 48 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-12-25 22:49:38,803 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14397 states.
[2023-12-25 22:49:38,869 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14397 to 7864.
[2023-12-25 22:49:38,875 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7864 states, 7863 states have (on average 1.6599262368052905) internal successors, (13052), 7863 states have internal predecessors, (13052), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:49:38,881 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7864 states to 7864 states and 13052 transitions.
[2023-12-25 22:49:38,881 INFO  L78                 Accepts]: Start accepts. Automaton has 7864 states and 13052 transitions. Word has length 5050
[2023-12-25 22:49:38,883 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 22:49:38,883 INFO  L495      AbstractCegarLoop]: Abstraction has 7864 states and 13052 transitions.
[2023-12-25 22:49:38,884 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 663.5714285714286) internal successors, (4645), 7 states have internal predecessors, (4645), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:49:38,884 INFO  L276                IsEmpty]: Start isEmpty. Operand 7864 states and 13052 transitions.
[2023-12-25 22:49:39,007 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5052
[2023-12-25 22:49:39,007 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 22:49:39,008 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-12-25 22:49:39,073 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Ended with exit code 0
[2023-12-25 22:49:39,236 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57,56 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 22:49:39,236 INFO  L420      AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 22:49:39,237 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 22:49:39,237 INFO  L85        PathProgramCache]: Analyzing trace with hash -2103350516, now seen corresponding path program 1 times
[2023-12-25 22:49:39,237 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 22:49:39,237 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1282192523]
[2023-12-25 22:49:39,238 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:49:39,238 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 22:49:39,538 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 22:49:39,538 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1304554610]
[2023-12-25 22:49:39,539 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:49:39,539 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 22:49:39,539 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 22:49:39,540 INFO  L229       MonitoredProcess]: Starting monitored process 57 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-25 22:49:39,554 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Waiting until timeout for monitored process
[2023-12-25 22:49:44,686 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 22:49:44,824 INFO  L262         TraceCheckSpWp]: Trace formula consists of 22521 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-12-25 22:49:44,877 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 22:49:45,062 INFO  L134       CoverageAnalysis]: Checked inductivity of 572 backedges. 170 proven. 0 refuted. 0 times theorem prover too weak. 402 trivial. 0 not checked.
[2023-12-25 22:49:45,062 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 22:49:45,062 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 22:49:45,062 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1282192523]
[2023-12-25 22:49:45,062 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 22:49:45,062 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1304554610]
[2023-12-25 22:49:45,062 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1304554610] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 22:49:45,063 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 22:49:45,063 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-12-25 22:49:45,063 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [436499835]
[2023-12-25 22:49:45,063 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 22:49:45,065 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-12-25 22:49:45,065 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 22:49:45,067 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-12-25 22:49:45,067 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-12-25 22:49:45,067 INFO  L87              Difference]: Start difference. First operand 7864 states and 13052 transitions. Second operand  has 7 states, 7 states have (on average 664.2857142857143) internal successors, (4650), 7 states have internal predecessors, (4650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:49:45,385 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 22:49:45,385 INFO  L93              Difference]: Finished difference Result 21422 states and 35541 transitions.
[2023-12-25 22:49:45,386 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-12-25 22:49:45,387 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 664.2857142857143) internal successors, (4650), 7 states have internal predecessors, (4650), 0 states have call successors, (0), 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 5051
[2023-12-25 22:49:45,390 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 22:49:45,403 INFO  L225             Difference]: With dead ends: 21422
[2023-12-25 22:49:45,404 INFO  L226             Difference]: Without dead ends: 14401
[2023-12-25 22:49:45,411 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5060 GetRequests, 5048 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-12-25 22:49:45,412 INFO  L413           NwaCegarLoop]: 12379 mSDtfsCounter, 31871 mSDsluCounter, 48495 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31871 SdHoareTripleChecker+Valid, 60874 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-12-25 22:49:45,412 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [31871 Valid, 60874 Invalid, 48 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-12-25 22:49:45,421 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14401 states.
[2023-12-25 22:49:45,596 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14401 to 7869.
[2023-12-25 22:49:45,602 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7869 states, 7868 states have (on average 1.6597610574478903) internal successors, (13059), 7868 states have internal predecessors, (13059), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:49:45,609 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7869 states to 7869 states and 13059 transitions.
[2023-12-25 22:49:45,610 INFO  L78                 Accepts]: Start accepts. Automaton has 7869 states and 13059 transitions. Word has length 5051
[2023-12-25 22:49:45,612 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 22:49:45,612 INFO  L495      AbstractCegarLoop]: Abstraction has 7869 states and 13059 transitions.
[2023-12-25 22:49:45,613 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 664.2857142857143) internal successors, (4650), 7 states have internal predecessors, (4650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:49:45,613 INFO  L276                IsEmpty]: Start isEmpty. Operand 7869 states and 13059 transitions.
[2023-12-25 22:49:45,737 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5053
[2023-12-25 22:49:45,738 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 22:49:45,739 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-12-25 22:49:45,811 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Forceful destruction successful, exit code 0
[2023-12-25 22:49:45,964 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58,57 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 22:49:45,964 INFO  L420      AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 22:49:45,965 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 22:49:45,965 INFO  L85        PathProgramCache]: Analyzing trace with hash -1163238340, now seen corresponding path program 1 times
[2023-12-25 22:49:45,965 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 22:49:45,965 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1656877629]
[2023-12-25 22:49:45,966 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:49:45,966 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 22:49:46,303 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 22:49:46,303 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [623595548]
[2023-12-25 22:49:46,304 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:49:46,304 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 22:49:46,304 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 22:49:46,305 INFO  L229       MonitoredProcess]: Starting monitored process 58 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-25 22:49:46,307 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Waiting until timeout for monitored process
[2023-12-25 22:49:51,521 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 22:49:51,660 INFO  L262         TraceCheckSpWp]: Trace formula consists of 22524 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-12-25 22:49:51,708 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 22:49:51,880 INFO  L134       CoverageAnalysis]: Checked inductivity of 572 backedges. 174 proven. 0 refuted. 0 times theorem prover too weak. 398 trivial. 0 not checked.
[2023-12-25 22:49:51,880 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 22:49:51,880 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 22:49:51,880 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1656877629]
[2023-12-25 22:49:51,880 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 22:49:51,880 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [623595548]
[2023-12-25 22:49:51,880 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [623595548] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 22:49:51,880 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 22:49:51,881 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-12-25 22:49:51,881 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1223832631]
[2023-12-25 22:49:51,881 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 22:49:51,883 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-12-25 22:49:51,883 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 22:49:51,885 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-12-25 22:49:51,885 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-12-25 22:49:51,885 INFO  L87              Difference]: Start difference. First operand 7869 states and 13059 transitions. Second operand  has 7 states, 7 states have (on average 665.0) internal successors, (4655), 7 states have internal predecessors, (4655), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:49:52,250 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 22:49:52,250 INFO  L93              Difference]: Finished difference Result 21437 states and 35562 transitions.
[2023-12-25 22:49:52,250 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-12-25 22:49:52,252 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 665.0) internal successors, (4655), 7 states have internal predecessors, (4655), 0 states have call successors, (0), 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 5052
[2023-12-25 22:49:52,255 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 22:49:52,271 INFO  L225             Difference]: With dead ends: 21437
[2023-12-25 22:49:52,271 INFO  L226             Difference]: Without dead ends: 14405
[2023-12-25 22:49:52,281 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5061 GetRequests, 5049 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-12-25 22:49:52,281 INFO  L413           NwaCegarLoop]: 12369 mSDtfsCounter, 31875 mSDsluCounter, 48465 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31875 SdHoareTripleChecker+Valid, 60834 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-12-25 22:49:52,282 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [31875 Valid, 60834 Invalid, 48 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-12-25 22:49:52,294 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14405 states.
[2023-12-25 22:49:52,374 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14405 to 7874.
[2023-12-25 22:49:52,380 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7874 states, 7873 states have (on average 1.6595960878953384) internal successors, (13066), 7873 states have internal predecessors, (13066), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:49:52,387 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7874 states to 7874 states and 13066 transitions.
[2023-12-25 22:49:52,387 INFO  L78                 Accepts]: Start accepts. Automaton has 7874 states and 13066 transitions. Word has length 5052
[2023-12-25 22:49:52,389 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 22:49:52,389 INFO  L495      AbstractCegarLoop]: Abstraction has 7874 states and 13066 transitions.
[2023-12-25 22:49:52,390 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 665.0) internal successors, (4655), 7 states have internal predecessors, (4655), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:49:52,390 INFO  L276                IsEmpty]: Start isEmpty. Operand 7874 states and 13066 transitions.
[2023-12-25 22:49:52,514 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5054
[2023-12-25 22:49:52,515 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 22:49:52,516 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-12-25 22:49:52,588 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Ended with exit code 0
[2023-12-25 22:49:52,729 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 58 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable59
[2023-12-25 22:49:52,730 INFO  L420      AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 22:49:52,730 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 22:49:52,730 INFO  L85        PathProgramCache]: Analyzing trace with hash 1374918592, now seen corresponding path program 1 times
[2023-12-25 22:49:52,730 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 22:49:52,730 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [578547370]
[2023-12-25 22:49:52,731 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:49:52,731 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 22:49:53,161 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 22:49:53,161 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2063309412]
[2023-12-25 22:49:53,162 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:49:53,162 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 22:49:53,163 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 22:49:53,163 INFO  L229       MonitoredProcess]: Starting monitored process 59 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-25 22:49:53,165 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Waiting until timeout for monitored process
[2023-12-25 22:49:58,160 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 22:49:58,296 INFO  L262         TraceCheckSpWp]: Trace formula consists of 22527 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-12-25 22:49:58,345 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 22:49:58,527 INFO  L134       CoverageAnalysis]: Checked inductivity of 572 backedges. 178 proven. 0 refuted. 0 times theorem prover too weak. 394 trivial. 0 not checked.
[2023-12-25 22:49:58,527 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 22:49:58,527 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 22:49:58,527 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [578547370]
[2023-12-25 22:49:58,527 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 22:49:58,527 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2063309412]
[2023-12-25 22:49:58,527 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [2063309412] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 22:49:58,527 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 22:49:58,528 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-12-25 22:49:58,528 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1783153184]
[2023-12-25 22:49:58,528 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 22:49:58,531 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-12-25 22:49:58,531 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 22:49:58,533 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-12-25 22:49:58,533 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-12-25 22:49:58,533 INFO  L87              Difference]: Start difference. First operand 7874 states and 13066 transitions. Second operand  has 7 states, 7 states have (on average 665.7142857142857) internal successors, (4660), 7 states have internal predecessors, (4660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:49:59,026 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 22:49:59,026 INFO  L93              Difference]: Finished difference Result 21452 states and 35583 transitions.
[2023-12-25 22:49:59,027 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-12-25 22:49:59,028 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 665.7142857142857) internal successors, (4660), 7 states have internal predecessors, (4660), 0 states have call successors, (0), 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 5053
[2023-12-25 22:49:59,030 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 22:49:59,040 INFO  L225             Difference]: With dead ends: 21452
[2023-12-25 22:49:59,040 INFO  L226             Difference]: Without dead ends: 14409
[2023-12-25 22:49:59,044 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5062 GetRequests, 5050 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-12-25 22:49:59,044 INFO  L413           NwaCegarLoop]: 12359 mSDtfsCounter, 31879 mSDsluCounter, 48435 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31879 SdHoareTripleChecker+Valid, 60794 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-12-25 22:49:59,044 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [31879 Valid, 60794 Invalid, 48 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-12-25 22:49:59,052 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14409 states.
[2023-12-25 22:49:59,113 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14409 to 7879.
[2023-12-25 22:49:59,120 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7879 states, 7878 states have (on average 1.6594313277481594) internal successors, (13073), 7878 states have internal predecessors, (13073), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:49:59,126 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7879 states to 7879 states and 13073 transitions.
[2023-12-25 22:49:59,127 INFO  L78                 Accepts]: Start accepts. Automaton has 7879 states and 13073 transitions. Word has length 5053
[2023-12-25 22:49:59,129 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 22:49:59,129 INFO  L495      AbstractCegarLoop]: Abstraction has 7879 states and 13073 transitions.
[2023-12-25 22:49:59,129 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 665.7142857142857) internal successors, (4660), 7 states have internal predecessors, (4660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:49:59,129 INFO  L276                IsEmpty]: Start isEmpty. Operand 7879 states and 13073 transitions.
[2023-12-25 22:49:59,252 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5055
[2023-12-25 22:49:59,252 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 22:49:59,253 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-12-25 22:49:59,323 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Forceful destruction successful, exit code 0
[2023-12-25 22:49:59,468 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 59 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable60
[2023-12-25 22:49:59,468 INFO  L420      AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 22:49:59,468 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 22:49:59,469 INFO  L85        PathProgramCache]: Analyzing trace with hash 767155848, now seen corresponding path program 1 times
[2023-12-25 22:49:59,469 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 22:49:59,469 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1496524815]
[2023-12-25 22:49:59,469 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:49:59,470 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 22:49:59,774 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 22:49:59,774 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [903673928]
[2023-12-25 22:49:59,775 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:49:59,775 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 22:49:59,775 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 22:49:59,776 INFO  L229       MonitoredProcess]: Starting monitored process 60 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-25 22:49:59,777 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Waiting until timeout for monitored process
[2023-12-25 22:50:04,813 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 22:50:04,956 INFO  L262         TraceCheckSpWp]: Trace formula consists of 22530 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-12-25 22:50:05,005 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 22:50:05,210 INFO  L134       CoverageAnalysis]: Checked inductivity of 572 backedges. 182 proven. 0 refuted. 0 times theorem prover too weak. 390 trivial. 0 not checked.
[2023-12-25 22:50:05,210 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 22:50:05,210 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 22:50:05,210 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1496524815]
[2023-12-25 22:50:05,211 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 22:50:05,211 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [903673928]
[2023-12-25 22:50:05,211 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [903673928] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 22:50:05,211 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 22:50:05,211 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-12-25 22:50:05,211 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [692159844]
[2023-12-25 22:50:05,211 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 22:50:05,213 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-12-25 22:50:05,213 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 22:50:05,215 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-12-25 22:50:05,215 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-12-25 22:50:05,215 INFO  L87              Difference]: Start difference. First operand 7879 states and 13073 transitions. Second operand  has 7 states, 7 states have (on average 666.4285714285714) internal successors, (4665), 7 states have internal predecessors, (4665), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:50:05,624 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 22:50:05,624 INFO  L93              Difference]: Finished difference Result 21467 states and 35604 transitions.
[2023-12-25 22:50:05,624 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-12-25 22:50:05,625 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 666.4285714285714) internal successors, (4665), 7 states have internal predecessors, (4665), 0 states have call successors, (0), 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 5054
[2023-12-25 22:50:05,628 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 22:50:05,637 INFO  L225             Difference]: With dead ends: 21467
[2023-12-25 22:50:05,637 INFO  L226             Difference]: Without dead ends: 14413
[2023-12-25 22:50:05,640 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5063 GetRequests, 5051 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-12-25 22:50:05,640 INFO  L413           NwaCegarLoop]: 12349 mSDtfsCounter, 31883 mSDsluCounter, 48405 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31883 SdHoareTripleChecker+Valid, 60754 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-12-25 22:50:05,640 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [31883 Valid, 60754 Invalid, 48 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-12-25 22:50:05,648 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14413 states.
[2023-12-25 22:50:05,704 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14413 to 7884.
[2023-12-25 22:50:05,709 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7884 states, 7883 states have (on average 1.6592667766078903) internal successors, (13080), 7883 states have internal predecessors, (13080), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:50:05,716 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7884 states to 7884 states and 13080 transitions.
[2023-12-25 22:50:05,716 INFO  L78                 Accepts]: Start accepts. Automaton has 7884 states and 13080 transitions. Word has length 5054
[2023-12-25 22:50:05,718 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 22:50:05,718 INFO  L495      AbstractCegarLoop]: Abstraction has 7884 states and 13080 transitions.
[2023-12-25 22:50:05,719 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 666.4285714285714) internal successors, (4665), 7 states have internal predecessors, (4665), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:50:05,719 INFO  L276                IsEmpty]: Start isEmpty. Operand 7884 states and 13080 transitions.
[2023-12-25 22:50:05,842 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5056
[2023-12-25 22:50:05,842 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 22:50:05,843 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-12-25 22:50:05,909 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Ended with exit code 0
[2023-12-25 22:50:06,056 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 60 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable61
[2023-12-25 22:50:06,057 INFO  L420      AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 22:50:06,057 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 22:50:06,058 INFO  L85        PathProgramCache]: Analyzing trace with hash -1037195660, now seen corresponding path program 1 times
[2023-12-25 22:50:06,058 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 22:50:06,058 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2014367446]
[2023-12-25 22:50:06,058 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:50:06,059 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 22:50:06,437 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 22:50:06,437 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1345432381]
[2023-12-25 22:50:06,439 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:50:06,439 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 22:50:06,439 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 22:50:06,440 INFO  L229       MonitoredProcess]: Starting monitored process 61 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-25 22:50:06,442 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Waiting until timeout for monitored process
[2023-12-25 22:50:11,551 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 22:50:11,691 INFO  L262         TraceCheckSpWp]: Trace formula consists of 22533 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-12-25 22:50:11,740 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 22:50:11,948 INFO  L134       CoverageAnalysis]: Checked inductivity of 572 backedges. 186 proven. 0 refuted. 0 times theorem prover too weak. 386 trivial. 0 not checked.
[2023-12-25 22:50:11,948 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 22:50:11,948 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 22:50:11,948 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2014367446]
[2023-12-25 22:50:11,948 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 22:50:11,948 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1345432381]
[2023-12-25 22:50:11,948 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1345432381] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 22:50:11,948 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 22:50:11,949 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-12-25 22:50:11,949 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [125106865]
[2023-12-25 22:50:11,949 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 22:50:11,951 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-12-25 22:50:11,951 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 22:50:11,953 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-12-25 22:50:11,953 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-12-25 22:50:11,954 INFO  L87              Difference]: Start difference. First operand 7884 states and 13080 transitions. Second operand  has 7 states, 7 states have (on average 667.1428571428571) internal successors, (4670), 7 states have internal predecessors, (4670), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:50:12,274 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 22:50:12,274 INFO  L93              Difference]: Finished difference Result 21482 states and 35625 transitions.
[2023-12-25 22:50:12,274 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-12-25 22:50:12,276 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 667.1428571428571) internal successors, (4670), 7 states have internal predecessors, (4670), 0 states have call successors, (0), 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 5055
[2023-12-25 22:50:12,278 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 22:50:12,291 INFO  L225             Difference]: With dead ends: 21482
[2023-12-25 22:50:12,291 INFO  L226             Difference]: Without dead ends: 14417
[2023-12-25 22:50:12,298 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5064 GetRequests, 5052 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-12-25 22:50:12,298 INFO  L413           NwaCegarLoop]: 12339 mSDtfsCounter, 31887 mSDsluCounter, 48375 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31887 SdHoareTripleChecker+Valid, 60714 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-12-25 22:50:12,299 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [31887 Valid, 60714 Invalid, 48 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-12-25 22:50:12,308 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14417 states.
[2023-12-25 22:50:12,373 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14417 to 7889.
[2023-12-25 22:50:12,378 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7889 states, 7888 states have (on average 1.659102434077079) internal successors, (13087), 7888 states have internal predecessors, (13087), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:50:12,385 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7889 states to 7889 states and 13087 transitions.
[2023-12-25 22:50:12,385 INFO  L78                 Accepts]: Start accepts. Automaton has 7889 states and 13087 transitions. Word has length 5055
[2023-12-25 22:50:12,387 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 22:50:12,387 INFO  L495      AbstractCegarLoop]: Abstraction has 7889 states and 13087 transitions.
[2023-12-25 22:50:12,388 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 667.1428571428571) internal successors, (4670), 7 states have internal predecessors, (4670), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:50:12,388 INFO  L276                IsEmpty]: Start isEmpty. Operand 7889 states and 13087 transitions.
[2023-12-25 22:50:12,592 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5057
[2023-12-25 22:50:12,592 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 22:50:12,593 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-12-25 22:50:12,658 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Forceful destruction successful, exit code 0
[2023-12-25 22:50:12,801 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62,61 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 22:50:12,804 INFO  L420      AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 22:50:12,804 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 22:50:12,805 INFO  L85        PathProgramCache]: Analyzing trace with hash 1734547156, now seen corresponding path program 1 times
[2023-12-25 22:50:12,805 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 22:50:12,805 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1902373903]
[2023-12-25 22:50:12,805 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:50:12,805 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 22:50:13,094 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 22:50:13,094 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [202086558]
[2023-12-25 22:50:13,095 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:50:13,095 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 22:50:13,095 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 22:50:13,096 INFO  L229       MonitoredProcess]: Starting monitored process 62 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-25 22:50:13,097 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Waiting until timeout for monitored process
[2023-12-25 22:50:17,802 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 22:50:17,944 INFO  L262         TraceCheckSpWp]: Trace formula consists of 22536 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-12-25 22:50:18,140 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 22:50:18,344 INFO  L134       CoverageAnalysis]: Checked inductivity of 572 backedges. 190 proven. 0 refuted. 0 times theorem prover too weak. 382 trivial. 0 not checked.
[2023-12-25 22:50:18,344 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 22:50:18,344 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 22:50:18,345 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1902373903]
[2023-12-25 22:50:18,345 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 22:50:18,345 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [202086558]
[2023-12-25 22:50:18,345 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [202086558] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 22:50:18,345 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 22:50:18,345 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-12-25 22:50:18,345 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1184776233]
[2023-12-25 22:50:18,345 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 22:50:18,347 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-12-25 22:50:18,347 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 22:50:18,349 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-12-25 22:50:18,349 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-12-25 22:50:18,349 INFO  L87              Difference]: Start difference. First operand 7889 states and 13087 transitions. Second operand  has 7 states, 7 states have (on average 667.8571428571429) internal successors, (4675), 7 states have internal predecessors, (4675), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:50:18,663 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 22:50:18,663 INFO  L93              Difference]: Finished difference Result 21497 states and 35646 transitions.
[2023-12-25 22:50:18,663 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-12-25 22:50:18,664 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 667.8571428571429) internal successors, (4675), 7 states have internal predecessors, (4675), 0 states have call successors, (0), 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 5056
[2023-12-25 22:50:18,667 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 22:50:18,680 INFO  L225             Difference]: With dead ends: 21497
[2023-12-25 22:50:18,680 INFO  L226             Difference]: Without dead ends: 14421
[2023-12-25 22:50:18,688 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5065 GetRequests, 5053 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-12-25 22:50:18,688 INFO  L413           NwaCegarLoop]: 12329 mSDtfsCounter, 31891 mSDsluCounter, 48345 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31891 SdHoareTripleChecker+Valid, 60674 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-12-25 22:50:18,688 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [31891 Valid, 60674 Invalid, 48 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-12-25 22:50:18,697 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14421 states.
[2023-12-25 22:50:18,765 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14421 to 7894.
[2023-12-25 22:50:18,772 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7894 states, 7893 states have (on average 1.6589382997592803) internal successors, (13094), 7893 states have internal predecessors, (13094), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:50:18,778 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7894 states to 7894 states and 13094 transitions.
[2023-12-25 22:50:18,778 INFO  L78                 Accepts]: Start accepts. Automaton has 7894 states and 13094 transitions. Word has length 5056
[2023-12-25 22:50:18,781 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 22:50:18,781 INFO  L495      AbstractCegarLoop]: Abstraction has 7894 states and 13094 transitions.
[2023-12-25 22:50:18,782 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 667.8571428571429) internal successors, (4675), 7 states have internal predecessors, (4675), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:50:18,782 INFO  L276                IsEmpty]: Start isEmpty. Operand 7894 states and 13094 transitions.
[2023-12-25 22:50:18,906 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5058
[2023-12-25 22:50:18,906 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 22:50:18,907 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-12-25 22:50:18,967 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Forceful destruction successful, exit code 0
[2023-12-25 22:50:19,132 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63,62 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 22:50:19,133 INFO  L420      AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 22:50:19,133 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 22:50:19,133 INFO  L85        PathProgramCache]: Analyzing trace with hash -1864607960, now seen corresponding path program 1 times
[2023-12-25 22:50:19,133 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 22:50:19,133 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [419674490]
[2023-12-25 22:50:19,134 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:50:19,134 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 22:50:19,514 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 22:50:19,514 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [604130133]
[2023-12-25 22:50:19,515 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:50:19,515 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 22:50:19,516 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 22:50:19,516 INFO  L229       MonitoredProcess]: Starting monitored process 63 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-25 22:50:19,518 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Waiting until timeout for monitored process
[2023-12-25 22:50:24,264 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 22:50:24,399 INFO  L262         TraceCheckSpWp]: Trace formula consists of 22539 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-12-25 22:50:24,449 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 22:50:24,653 INFO  L134       CoverageAnalysis]: Checked inductivity of 572 backedges. 194 proven. 0 refuted. 0 times theorem prover too weak. 378 trivial. 0 not checked.
[2023-12-25 22:50:24,653 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 22:50:24,654 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 22:50:24,654 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [419674490]
[2023-12-25 22:50:24,654 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 22:50:24,654 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [604130133]
[2023-12-25 22:50:24,654 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [604130133] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 22:50:24,654 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 22:50:24,654 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-12-25 22:50:24,654 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [350538489]
[2023-12-25 22:50:24,654 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 22:50:24,656 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-12-25 22:50:24,656 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 22:50:24,658 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-12-25 22:50:24,658 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-12-25 22:50:24,659 INFO  L87              Difference]: Start difference. First operand 7894 states and 13094 transitions. Second operand  has 7 states, 7 states have (on average 668.5714285714286) internal successors, (4680), 7 states have internal predecessors, (4680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:50:25,161 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 22:50:25,161 INFO  L93              Difference]: Finished difference Result 21512 states and 35667 transitions.
[2023-12-25 22:50:25,162 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-12-25 22:50:25,163 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 668.5714285714286) internal successors, (4680), 7 states have internal predecessors, (4680), 0 states have call successors, (0), 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 5057
[2023-12-25 22:50:25,165 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 22:50:25,175 INFO  L225             Difference]: With dead ends: 21512
[2023-12-25 22:50:25,175 INFO  L226             Difference]: Without dead ends: 14425
[2023-12-25 22:50:25,179 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5066 GetRequests, 5054 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-12-25 22:50:25,179 INFO  L413           NwaCegarLoop]: 12319 mSDtfsCounter, 31895 mSDsluCounter, 48315 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31895 SdHoareTripleChecker+Valid, 60634 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-12-25 22:50:25,180 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [31895 Valid, 60634 Invalid, 48 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-12-25 22:50:25,187 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14425 states.
[2023-12-25 22:50:25,245 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14425 to 7899.
[2023-12-25 22:50:25,251 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7899 states, 7898 states have (on average 1.658774373259053) internal successors, (13101), 7898 states have internal predecessors, (13101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:50:25,258 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7899 states to 7899 states and 13101 transitions.
[2023-12-25 22:50:25,258 INFO  L78                 Accepts]: Start accepts. Automaton has 7899 states and 13101 transitions. Word has length 5057
[2023-12-25 22:50:25,260 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 22:50:25,260 INFO  L495      AbstractCegarLoop]: Abstraction has 7899 states and 13101 transitions.
[2023-12-25 22:50:25,261 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 668.5714285714286) internal successors, (4680), 7 states have internal predecessors, (4680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:50:25,261 INFO  L276                IsEmpty]: Start isEmpty. Operand 7899 states and 13101 transitions.
[2023-12-25 22:50:25,386 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5059
[2023-12-25 22:50:25,386 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 22:50:25,387 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-12-25 22:50:25,446 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Forceful destruction successful, exit code 0
[2023-12-25 22:50:25,612 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 63 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable64
[2023-12-25 22:50:25,612 INFO  L420      AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 22:50:25,613 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 22:50:25,613 INFO  L85        PathProgramCache]: Analyzing trace with hash 2088324384, now seen corresponding path program 1 times
[2023-12-25 22:50:25,613 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 22:50:25,613 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1570057086]
[2023-12-25 22:50:25,614 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:50:25,614 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 22:50:25,900 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 22:50:25,900 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1062354833]
[2023-12-25 22:50:25,901 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:50:25,901 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 22:50:25,901 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 22:50:25,902 INFO  L229       MonitoredProcess]: Starting monitored process 64 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-25 22:50:25,904 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Waiting until timeout for monitored process
[2023-12-25 22:50:30,959 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 22:50:31,098 INFO  L262         TraceCheckSpWp]: Trace formula consists of 22542 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-12-25 22:50:31,146 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 22:50:31,351 INFO  L134       CoverageAnalysis]: Checked inductivity of 572 backedges. 198 proven. 0 refuted. 0 times theorem prover too weak. 374 trivial. 0 not checked.
[2023-12-25 22:50:31,351 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 22:50:31,351 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 22:50:31,351 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1570057086]
[2023-12-25 22:50:31,352 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 22:50:31,352 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1062354833]
[2023-12-25 22:50:31,352 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1062354833] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 22:50:31,352 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 22:50:31,352 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-12-25 22:50:31,352 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1271537095]
[2023-12-25 22:50:31,352 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 22:50:31,354 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-12-25 22:50:31,354 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 22:50:31,356 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-12-25 22:50:31,356 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-12-25 22:50:31,356 INFO  L87              Difference]: Start difference. First operand 7899 states and 13101 transitions. Second operand  has 7 states, 7 states have (on average 669.2857142857143) internal successors, (4685), 7 states have internal predecessors, (4685), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:50:31,665 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 22:50:31,665 INFO  L93              Difference]: Finished difference Result 21527 states and 35688 transitions.
[2023-12-25 22:50:31,665 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-12-25 22:50:31,667 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 669.2857142857143) internal successors, (4685), 7 states have internal predecessors, (4685), 0 states have call successors, (0), 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 5058
[2023-12-25 22:50:31,670 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 22:50:31,885 INFO  L225             Difference]: With dead ends: 21527
[2023-12-25 22:50:31,885 INFO  L226             Difference]: Without dead ends: 14429
[2023-12-25 22:50:31,897 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5067 GetRequests, 5055 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-12-25 22:50:31,897 INFO  L413           NwaCegarLoop]: 12309 mSDtfsCounter, 31899 mSDsluCounter, 48285 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31899 SdHoareTripleChecker+Valid, 60594 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-12-25 22:50:31,897 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [31899 Valid, 60594 Invalid, 48 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-12-25 22:50:31,906 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14429 states.
[2023-12-25 22:50:31,961 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14429 to 7904.
[2023-12-25 22:50:31,969 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7904 states, 7903 states have (on average 1.6586106541819563) internal successors, (13108), 7903 states have internal predecessors, (13108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:50:31,975 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7904 states to 7904 states and 13108 transitions.
[2023-12-25 22:50:31,975 INFO  L78                 Accepts]: Start accepts. Automaton has 7904 states and 13108 transitions. Word has length 5058
[2023-12-25 22:50:31,978 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 22:50:31,978 INFO  L495      AbstractCegarLoop]: Abstraction has 7904 states and 13108 transitions.
[2023-12-25 22:50:31,978 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 669.2857142857143) internal successors, (4685), 7 states have internal predecessors, (4685), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:50:31,978 INFO  L276                IsEmpty]: Start isEmpty. Operand 7904 states and 13108 transitions.
[2023-12-25 22:50:32,102 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5060
[2023-12-25 22:50:32,102 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 22:50:32,103 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-12-25 22:50:32,165 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Forceful destruction successful, exit code 0
[2023-12-25 22:50:32,328 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 64 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable65
[2023-12-25 22:50:32,328 INFO  L420      AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 22:50:32,329 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 22:50:32,329 INFO  L85        PathProgramCache]: Analyzing trace with hash 1607231964, now seen corresponding path program 1 times
[2023-12-25 22:50:32,329 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 22:50:32,329 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2074438607]
[2023-12-25 22:50:32,329 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:50:32,330 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 22:50:32,649 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 22:50:32,649 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [253123731]
[2023-12-25 22:50:32,650 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:50:32,650 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 22:50:32,650 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 22:50:32,651 INFO  L229       MonitoredProcess]: Starting monitored process 65 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-25 22:50:32,652 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Waiting until timeout for monitored process
[2023-12-25 22:50:37,654 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 22:50:37,787 INFO  L262         TraceCheckSpWp]: Trace formula consists of 22545 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-12-25 22:50:37,833 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 22:50:38,034 INFO  L134       CoverageAnalysis]: Checked inductivity of 572 backedges. 202 proven. 0 refuted. 0 times theorem prover too weak. 370 trivial. 0 not checked.
[2023-12-25 22:50:38,034 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 22:50:38,034 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 22:50:38,034 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2074438607]
[2023-12-25 22:50:38,034 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 22:50:38,035 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [253123731]
[2023-12-25 22:50:38,035 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [253123731] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 22:50:38,035 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 22:50:38,035 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-12-25 22:50:38,035 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1297085477]
[2023-12-25 22:50:38,036 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 22:50:38,038 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-12-25 22:50:38,038 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 22:50:38,039 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-12-25 22:50:38,039 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-12-25 22:50:38,040 INFO  L87              Difference]: Start difference. First operand 7904 states and 13108 transitions. Second operand  has 7 states, 7 states have (on average 670.0) internal successors, (4690), 7 states have internal predecessors, (4690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:50:38,355 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 22:50:38,355 INFO  L93              Difference]: Finished difference Result 21542 states and 35709 transitions.
[2023-12-25 22:50:38,356 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-12-25 22:50:38,357 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 670.0) internal successors, (4690), 7 states have internal predecessors, (4690), 0 states have call successors, (0), 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 5059
[2023-12-25 22:50:38,359 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 22:50:38,371 INFO  L225             Difference]: With dead ends: 21542
[2023-12-25 22:50:38,371 INFO  L226             Difference]: Without dead ends: 14433
[2023-12-25 22:50:38,379 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5068 GetRequests, 5056 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-12-25 22:50:38,379 INFO  L413           NwaCegarLoop]: 12299 mSDtfsCounter, 31903 mSDsluCounter, 48255 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31903 SdHoareTripleChecker+Valid, 60554 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-12-25 22:50:38,379 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [31903 Valid, 60554 Invalid, 48 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-12-25 22:50:38,388 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14433 states.
[2023-12-25 22:50:38,454 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14433 to 7909.
[2023-12-25 22:50:38,461 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7909 states, 7908 states have (on average 1.6584471421345472) internal successors, (13115), 7908 states have internal predecessors, (13115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:50:38,469 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7909 states to 7909 states and 13115 transitions.
[2023-12-25 22:50:38,469 INFO  L78                 Accepts]: Start accepts. Automaton has 7909 states and 13115 transitions. Word has length 5059
[2023-12-25 22:50:38,471 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 22:50:38,471 INFO  L495      AbstractCegarLoop]: Abstraction has 7909 states and 13115 transitions.
[2023-12-25 22:50:38,472 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 670.0) internal successors, (4690), 7 states have internal predecessors, (4690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:50:38,472 INFO  L276                IsEmpty]: Start isEmpty. Operand 7909 states and 13115 transitions.
[2023-12-25 22:50:38,665 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5061
[2023-12-25 22:50:38,665 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 22:50:38,666 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-12-25 22:50:38,727 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Forceful destruction successful, exit code 0
[2023-12-25 22:50:38,880 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66,65 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 22:50:38,880 INFO  L420      AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 22:50:38,881 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 22:50:38,881 INFO  L85        PathProgramCache]: Analyzing trace with hash -879771284, now seen corresponding path program 1 times
[2023-12-25 22:50:38,881 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 22:50:38,881 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1402533600]
[2023-12-25 22:50:38,881 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:50:38,882 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 22:50:39,212 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 22:50:39,212 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1187556609]
[2023-12-25 22:50:39,213 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:50:39,213 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 22:50:39,213 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 22:50:39,214 INFO  L229       MonitoredProcess]: Starting monitored process 66 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-25 22:50:39,217 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Waiting until timeout for monitored process
[2023-12-25 22:50:44,188 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 22:50:44,325 INFO  L262         TraceCheckSpWp]: Trace formula consists of 22548 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-12-25 22:50:44,377 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 22:50:44,551 INFO  L134       CoverageAnalysis]: Checked inductivity of 572 backedges. 206 proven. 0 refuted. 0 times theorem prover too weak. 366 trivial. 0 not checked.
[2023-12-25 22:50:44,551 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 22:50:44,551 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 22:50:44,551 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1402533600]
[2023-12-25 22:50:44,551 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 22:50:44,551 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1187556609]
[2023-12-25 22:50:44,551 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1187556609] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 22:50:44,552 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 22:50:44,552 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-12-25 22:50:44,552 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1095410715]
[2023-12-25 22:50:44,552 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 22:50:44,556 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-12-25 22:50:44,556 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 22:50:44,558 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-12-25 22:50:44,558 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-12-25 22:50:44,558 INFO  L87              Difference]: Start difference. First operand 7909 states and 13115 transitions. Second operand  has 7 states, 7 states have (on average 670.7142857142857) internal successors, (4695), 7 states have internal predecessors, (4695), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:50:44,961 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 22:50:44,961 INFO  L93              Difference]: Finished difference Result 21557 states and 35730 transitions.
[2023-12-25 22:50:44,961 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-12-25 22:50:44,962 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 670.7142857142857) internal successors, (4695), 7 states have internal predecessors, (4695), 0 states have call successors, (0), 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 5060
[2023-12-25 22:50:44,965 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 22:50:44,978 INFO  L225             Difference]: With dead ends: 21557
[2023-12-25 22:50:44,978 INFO  L226             Difference]: Without dead ends: 14437
[2023-12-25 22:50:44,985 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5069 GetRequests, 5057 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-12-25 22:50:44,985 INFO  L413           NwaCegarLoop]: 12289 mSDtfsCounter, 31907 mSDsluCounter, 48225 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31907 SdHoareTripleChecker+Valid, 60514 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-12-25 22:50:44,985 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [31907 Valid, 60514 Invalid, 48 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-12-25 22:50:44,994 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14437 states.
[2023-12-25 22:50:45,066 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14437 to 7914.
[2023-12-25 22:50:45,073 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7914 states, 7913 states have (on average 1.6582838367243775) internal successors, (13122), 7913 states have internal predecessors, (13122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:50:45,081 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7914 states to 7914 states and 13122 transitions.
[2023-12-25 22:50:45,081 INFO  L78                 Accepts]: Start accepts. Automaton has 7914 states and 13122 transitions. Word has length 5060
[2023-12-25 22:50:45,083 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 22:50:45,083 INFO  L495      AbstractCegarLoop]: Abstraction has 7914 states and 13122 transitions.
[2023-12-25 22:50:45,084 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 670.7142857142857) internal successors, (4695), 7 states have internal predecessors, (4695), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:50:45,084 INFO  L276                IsEmpty]: Start isEmpty. Operand 7914 states and 13122 transitions.
[2023-12-25 22:50:45,212 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5062
[2023-12-25 22:50:45,213 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 22:50:45,214 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-12-25 22:50:45,274 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Forceful destruction successful, exit code 0
[2023-12-25 22:50:45,437 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 66 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable67
[2023-12-25 22:50:45,438 INFO  L420      AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 22:50:45,438 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 22:50:45,439 INFO  L85        PathProgramCache]: Analyzing trace with hash -653615472, now seen corresponding path program 1 times
[2023-12-25 22:50:45,439 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 22:50:45,439 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [943158751]
[2023-12-25 22:50:45,439 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:50:45,439 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 22:50:45,755 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 22:50:45,755 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2086381661]
[2023-12-25 22:50:45,756 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:50:45,757 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 22:50:45,757 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 22:50:45,758 INFO  L229       MonitoredProcess]: Starting monitored process 67 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-25 22:50:45,758 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (67)] Waiting until timeout for monitored process
[2023-12-25 22:50:50,683 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 22:50:50,812 INFO  L262         TraceCheckSpWp]: Trace formula consists of 22551 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-12-25 22:50:50,855 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 22:50:51,059 INFO  L134       CoverageAnalysis]: Checked inductivity of 572 backedges. 208 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked.
[2023-12-25 22:50:51,060 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 22:50:51,060 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 22:50:51,060 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [943158751]
[2023-12-25 22:50:51,060 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 22:50:51,060 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2086381661]
[2023-12-25 22:50:51,060 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [2086381661] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 22:50:51,060 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 22:50:51,060 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-12-25 22:50:51,060 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [244784349]
[2023-12-25 22:50:51,061 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 22:50:51,063 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-12-25 22:50:51,063 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 22:50:51,064 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-12-25 22:50:51,064 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-12-25 22:50:51,065 INFO  L87              Difference]: Start difference. First operand 7914 states and 13122 transitions. Second operand  has 7 states, 7 states have (on average 671.1428571428571) internal successors, (4698), 7 states have internal predecessors, (4698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:50:51,385 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 22:50:51,385 INFO  L93              Difference]: Finished difference Result 21569 states and 35746 transitions.
[2023-12-25 22:50:51,386 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-12-25 22:50:51,387 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 671.1428571428571) internal successors, (4698), 7 states have internal predecessors, (4698), 0 states have call successors, (0), 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 5061
[2023-12-25 22:50:51,389 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 22:50:51,402 INFO  L225             Difference]: With dead ends: 21569
[2023-12-25 22:50:51,402 INFO  L226             Difference]: Without dead ends: 14438
[2023-12-25 22:50:51,409 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5070 GetRequests, 5058 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-12-25 22:50:51,424 INFO  L413           NwaCegarLoop]: 12284 mSDtfsCounter, 31908 mSDsluCounter, 48210 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31908 SdHoareTripleChecker+Valid, 60494 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-12-25 22:50:51,424 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [31908 Valid, 60494 Invalid, 48 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-12-25 22:50:51,434 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14438 states.
[2023-12-25 22:50:51,534 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14438 to 7916.
[2023-12-25 22:50:51,540 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7916 states, 7915 states have (on average 1.65811749842072) internal successors, (13124), 7915 states have internal predecessors, (13124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:50:51,547 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7916 states to 7916 states and 13124 transitions.
[2023-12-25 22:50:51,547 INFO  L78                 Accepts]: Start accepts. Automaton has 7916 states and 13124 transitions. Word has length 5061
[2023-12-25 22:50:51,549 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 22:50:51,549 INFO  L495      AbstractCegarLoop]: Abstraction has 7916 states and 13124 transitions.
[2023-12-25 22:50:51,550 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 671.1428571428571) internal successors, (4698), 7 states have internal predecessors, (4698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:50:51,550 INFO  L276                IsEmpty]: Start isEmpty. Operand 7916 states and 13124 transitions.
[2023-12-25 22:50:51,673 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5063
[2023-12-25 22:50:51,673 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 22:50:51,674 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-12-25 22:50:51,733 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (67)] Forceful destruction successful, exit code 0
[2023-12-25 22:50:51,900 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 67 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable68
[2023-12-25 22:50:51,900 INFO  L420      AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 22:50:51,901 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 22:50:51,901 INFO  L85        PathProgramCache]: Analyzing trace with hash -628279918, now seen corresponding path program 1 times
[2023-12-25 22:50:51,901 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 22:50:51,901 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1912462540]
[2023-12-25 22:50:51,902 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:50:51,902 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 22:50:52,198 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 22:50:52,198 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [643625744]
[2023-12-25 22:50:52,199 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:50:52,199 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 22:50:52,199 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 22:50:52,201 INFO  L229       MonitoredProcess]: Starting monitored process 68 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-25 22:50:52,226 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (68)] Waiting until timeout for monitored process
[2023-12-25 22:50:57,370 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 22:50:57,510 INFO  L262         TraceCheckSpWp]: Trace formula consists of 22554 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-12-25 22:50:57,559 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 22:50:57,732 INFO  L134       CoverageAnalysis]: Checked inductivity of 572 backedges. 212 proven. 0 refuted. 0 times theorem prover too weak. 360 trivial. 0 not checked.
[2023-12-25 22:50:57,733 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 22:50:57,733 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 22:50:57,733 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1912462540]
[2023-12-25 22:50:57,733 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 22:50:57,733 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [643625744]
[2023-12-25 22:50:57,733 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [643625744] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 22:50:57,733 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 22:50:57,733 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-12-25 22:50:57,734 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1945238310]
[2023-12-25 22:50:57,734 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 22:50:57,736 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-12-25 22:50:57,736 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 22:50:57,737 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-12-25 22:50:57,738 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-12-25 22:50:57,738 INFO  L87              Difference]: Start difference. First operand 7916 states and 13124 transitions. Second operand  has 7 states, 7 states have (on average 671.8571428571429) internal successors, (4703), 7 states have internal predecessors, (4703), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:50:58,057 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 22:50:58,057 INFO  L93              Difference]: Finished difference Result 21578 states and 35757 transitions.
[2023-12-25 22:50:58,058 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-12-25 22:50:58,059 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 671.8571428571429) internal successors, (4703), 7 states have internal predecessors, (4703), 0 states have call successors, (0), 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 5062
[2023-12-25 22:50:58,062 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 22:50:58,076 INFO  L225             Difference]: With dead ends: 21578
[2023-12-25 22:50:58,076 INFO  L226             Difference]: Without dead ends: 14442
[2023-12-25 22:50:58,084 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5071 GetRequests, 5059 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-12-25 22:50:58,084 INFO  L413           NwaCegarLoop]: 12274 mSDtfsCounter, 31910 mSDsluCounter, 48180 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31910 SdHoareTripleChecker+Valid, 60454 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-12-25 22:50:58,084 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [31910 Valid, 60454 Invalid, 48 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-12-25 22:50:58,093 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14442 states.
[2023-12-25 22:50:58,162 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14442 to 7921.
[2023-12-25 22:50:58,168 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7921 states, 7920 states have (on average 1.6579545454545455) internal successors, (13131), 7920 states have internal predecessors, (13131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:50:58,175 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7921 states to 7921 states and 13131 transitions.
[2023-12-25 22:50:58,175 INFO  L78                 Accepts]: Start accepts. Automaton has 7921 states and 13131 transitions. Word has length 5062
[2023-12-25 22:50:58,177 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 22:50:58,177 INFO  L495      AbstractCegarLoop]: Abstraction has 7921 states and 13131 transitions.
[2023-12-25 22:50:58,178 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 671.8571428571429) internal successors, (4703), 7 states have internal predecessors, (4703), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:50:58,178 INFO  L276                IsEmpty]: Start isEmpty. Operand 7921 states and 13131 transitions.
[2023-12-25 22:50:58,378 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5064
[2023-12-25 22:50:58,379 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 22:50:58,380 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-12-25 22:50:58,443 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (68)] Forceful destruction successful, exit code 0
[2023-12-25 22:50:58,604 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 68 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable69
[2023-12-25 22:50:58,604 INFO  L420      AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 22:50:58,605 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 22:50:58,605 INFO  L85        PathProgramCache]: Analyzing trace with hash 1174126598, now seen corresponding path program 1 times
[2023-12-25 22:50:58,605 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 22:50:58,605 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1305434020]
[2023-12-25 22:50:58,606 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:50:58,606 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 22:50:58,918 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 22:50:58,918 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [835459898]
[2023-12-25 22:50:58,919 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:50:58,919 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 22:50:58,919 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 22:50:58,920 INFO  L229       MonitoredProcess]: Starting monitored process 69 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-25 22:50:58,921 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (69)] Waiting until timeout for monitored process
[2023-12-25 22:51:03,902 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 22:51:04,042 INFO  L262         TraceCheckSpWp]: Trace formula consists of 22558 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-12-25 22:51:04,091 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 22:51:04,264 INFO  L134       CoverageAnalysis]: Checked inductivity of 572 backedges. 216 proven. 0 refuted. 0 times theorem prover too weak. 356 trivial. 0 not checked.
[2023-12-25 22:51:04,264 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 22:51:04,264 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 22:51:04,264 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1305434020]
[2023-12-25 22:51:04,264 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 22:51:04,265 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [835459898]
[2023-12-25 22:51:04,265 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [835459898] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 22:51:04,265 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 22:51:04,265 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-12-25 22:51:04,265 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [668542901]
[2023-12-25 22:51:04,265 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 22:51:04,267 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-12-25 22:51:04,268 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 22:51:04,269 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-12-25 22:51:04,269 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-12-25 22:51:04,270 INFO  L87              Difference]: Start difference. First operand 7921 states and 13131 transitions. Second operand  has 7 states, 7 states have (on average 672.5714285714286) internal successors, (4708), 7 states have internal predecessors, (4708), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:51:04,604 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 22:51:04,604 INFO  L93              Difference]: Finished difference Result 21593 states and 35778 transitions.
[2023-12-25 22:51:04,604 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-12-25 22:51:04,605 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 672.5714285714286) internal successors, (4708), 7 states have internal predecessors, (4708), 0 states have call successors, (0), 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 5063
[2023-12-25 22:51:04,608 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 22:51:04,620 INFO  L225             Difference]: With dead ends: 21593
[2023-12-25 22:51:04,620 INFO  L226             Difference]: Without dead ends: 14446
[2023-12-25 22:51:04,628 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5072 GetRequests, 5060 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-12-25 22:51:04,628 INFO  L413           NwaCegarLoop]: 12264 mSDtfsCounter, 31914 mSDsluCounter, 48150 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31914 SdHoareTripleChecker+Valid, 60414 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-12-25 22:51:04,628 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [31914 Valid, 60414 Invalid, 48 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-12-25 22:51:04,637 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14446 states.
[2023-12-25 22:51:04,835 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14446 to 7926.
[2023-12-25 22:51:04,843 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7926 states, 7925 states have (on average 1.6577917981072554) internal successors, (13138), 7925 states have internal predecessors, (13138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:51:04,851 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7926 states to 7926 states and 13138 transitions.
[2023-12-25 22:51:04,851 INFO  L78                 Accepts]: Start accepts. Automaton has 7926 states and 13138 transitions. Word has length 5063
[2023-12-25 22:51:04,853 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 22:51:04,853 INFO  L495      AbstractCegarLoop]: Abstraction has 7926 states and 13138 transitions.
[2023-12-25 22:51:04,854 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 672.5714285714286) internal successors, (4708), 7 states have internal predecessors, (4708), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:51:04,854 INFO  L276                IsEmpty]: Start isEmpty. Operand 7926 states and 13138 transitions.
[2023-12-25 22:51:04,978 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5065
[2023-12-25 22:51:04,978 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 22:51:04,979 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-12-25 22:51:05,051 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (69)] Forceful destruction successful, exit code 0
[2023-12-25 22:51:05,192 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 69 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable70
[2023-12-25 22:51:05,192 INFO  L420      AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 22:51:05,193 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 22:51:05,193 INFO  L85        PathProgramCache]: Analyzing trace with hash 210298912, now seen corresponding path program 1 times
[2023-12-25 22:51:05,193 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 22:51:05,193 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1938132069]
[2023-12-25 22:51:05,194 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:51:05,194 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 22:51:05,503 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 22:51:05,503 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1262379456]
[2023-12-25 22:51:05,504 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:51:05,504 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 22:51:05,504 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 22:51:05,505 INFO  L229       MonitoredProcess]: Starting monitored process 70 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-25 22:51:05,508 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (70)] Waiting until timeout for monitored process
[2023-12-25 22:51:10,541 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 22:51:10,692 INFO  L262         TraceCheckSpWp]: Trace formula consists of 22561 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-12-25 22:51:10,747 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 22:51:11,143 INFO  L134       CoverageAnalysis]: Checked inductivity of 572 backedges. 220 proven. 0 refuted. 0 times theorem prover too weak. 352 trivial. 0 not checked.
[2023-12-25 22:51:11,143 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 22:51:11,143 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 22:51:11,143 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1938132069]
[2023-12-25 22:51:11,143 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 22:51:11,143 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1262379456]
[2023-12-25 22:51:11,143 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1262379456] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 22:51:11,143 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 22:51:11,143 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-12-25 22:51:11,144 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [521597590]
[2023-12-25 22:51:11,144 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 22:51:11,146 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-12-25 22:51:11,146 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 22:51:11,148 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-12-25 22:51:11,148 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-12-25 22:51:11,148 INFO  L87              Difference]: Start difference. First operand 7926 states and 13138 transitions. Second operand  has 7 states, 7 states have (on average 673.2857142857143) internal successors, (4713), 7 states have internal predecessors, (4713), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:51:11,472 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 22:51:11,472 INFO  L93              Difference]: Finished difference Result 21608 states and 35799 transitions.
[2023-12-25 22:51:11,472 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-12-25 22:51:11,473 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 673.2857142857143) internal successors, (4713), 7 states have internal predecessors, (4713), 0 states have call successors, (0), 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 5064
[2023-12-25 22:51:11,476 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 22:51:11,490 INFO  L225             Difference]: With dead ends: 21608
[2023-12-25 22:51:11,490 INFO  L226             Difference]: Without dead ends: 14450
[2023-12-25 22:51:11,497 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5073 GetRequests, 5061 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-12-25 22:51:11,497 INFO  L413           NwaCegarLoop]: 12254 mSDtfsCounter, 31918 mSDsluCounter, 48120 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31918 SdHoareTripleChecker+Valid, 60374 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-12-25 22:51:11,497 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [31918 Valid, 60374 Invalid, 48 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-12-25 22:51:11,507 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14450 states.
[2023-12-25 22:51:11,576 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14450 to 7931.
[2023-12-25 22:51:11,582 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7931 states, 7930 states have (on average 1.6576292559899117) internal successors, (13145), 7930 states have internal predecessors, (13145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:51:11,589 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7931 states to 7931 states and 13145 transitions.
[2023-12-25 22:51:11,589 INFO  L78                 Accepts]: Start accepts. Automaton has 7931 states and 13145 transitions. Word has length 5064
[2023-12-25 22:51:11,591 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 22:51:11,591 INFO  L495      AbstractCegarLoop]: Abstraction has 7931 states and 13145 transitions.
[2023-12-25 22:51:11,592 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 673.2857142857143) internal successors, (4713), 7 states have internal predecessors, (4713), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:51:11,592 INFO  L276                IsEmpty]: Start isEmpty. Operand 7931 states and 13145 transitions.
[2023-12-25 22:51:11,716 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5066
[2023-12-25 22:51:11,717 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 22:51:11,718 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 22:51:11,784 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (70)] Ended with exit code 0
[2023-12-25 22:51:11,932 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71,70 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 22:51:11,932 INFO  L420      AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 22:51:11,933 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 22:51:11,933 INFO  L85        PathProgramCache]: Analyzing trace with hash 543127804, now seen corresponding path program 1 times
[2023-12-25 22:51:11,933 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 22:51:11,933 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [860172274]
[2023-12-25 22:51:11,934 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:51:11,934 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 22:51:12,248 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 22:51:12,248 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1268681132]
[2023-12-25 22:51:12,249 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:51:12,249 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 22:51:12,250 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 22:51:12,250 INFO  L229       MonitoredProcess]: Starting monitored process 71 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-25 22:51:12,253 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (71)] Waiting until timeout for monitored process
[2023-12-25 22:51:17,409 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 22:51:17,551 INFO  L262         TraceCheckSpWp]: Trace formula consists of 22565 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-12-25 22:51:17,608 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 22:51:17,787 INFO  L134       CoverageAnalysis]: Checked inductivity of 572 backedges. 224 proven. 0 refuted. 0 times theorem prover too weak. 348 trivial. 0 not checked.
[2023-12-25 22:51:17,788 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 22:51:17,788 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 22:51:17,788 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [860172274]
[2023-12-25 22:51:17,788 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 22:51:17,788 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1268681132]
[2023-12-25 22:51:17,788 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1268681132] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 22:51:17,788 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 22:51:17,788 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-12-25 22:51:17,788 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1470203461]
[2023-12-25 22:51:17,788 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 22:51:17,791 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-12-25 22:51:17,791 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 22:51:17,792 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-12-25 22:51:17,792 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-12-25 22:51:17,793 INFO  L87              Difference]: Start difference. First operand 7931 states and 13145 transitions. Second operand  has 7 states, 7 states have (on average 674.0) internal successors, (4718), 7 states have internal predecessors, (4718), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:51:18,115 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 22:51:18,115 INFO  L93              Difference]: Finished difference Result 21623 states and 35820 transitions.
[2023-12-25 22:51:18,115 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-12-25 22:51:18,116 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 674.0) internal successors, (4718), 7 states have internal predecessors, (4718), 0 states have call successors, (0), 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 5065
[2023-12-25 22:51:18,119 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 22:51:18,133 INFO  L225             Difference]: With dead ends: 21623
[2023-12-25 22:51:18,133 INFO  L226             Difference]: Without dead ends: 14454
[2023-12-25 22:51:18,141 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5074 GetRequests, 5062 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-12-25 22:51:18,141 INFO  L413           NwaCegarLoop]: 12244 mSDtfsCounter, 31922 mSDsluCounter, 48090 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31922 SdHoareTripleChecker+Valid, 60334 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-12-25 22:51:18,141 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [31922 Valid, 60334 Invalid, 48 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-12-25 22:51:18,151 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14454 states.
[2023-12-25 22:51:18,224 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14454 to 7936.
[2023-12-25 22:51:18,230 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7936 states, 7935 states have (on average 1.6574669187145559) internal successors, (13152), 7935 states have internal predecessors, (13152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:51:18,237 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7936 states to 7936 states and 13152 transitions.
[2023-12-25 22:51:18,238 INFO  L78                 Accepts]: Start accepts. Automaton has 7936 states and 13152 transitions. Word has length 5065
[2023-12-25 22:51:18,240 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 22:51:18,240 INFO  L495      AbstractCegarLoop]: Abstraction has 7936 states and 13152 transitions.
[2023-12-25 22:51:18,241 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 674.0) internal successors, (4718), 7 states have internal predecessors, (4718), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:51:18,241 INFO  L276                IsEmpty]: Start isEmpty. Operand 7936 states and 13152 transitions.
[2023-12-25 22:51:18,368 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5067
[2023-12-25 22:51:18,368 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 22:51:18,369 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-12-25 22:51:18,439 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (71)] Forceful destruction successful, exit code 0
[2023-12-25 22:51:18,584 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72,71 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 22:51:18,584 INFO  L420      AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 22:51:18,585 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 22:51:18,585 INFO  L85        PathProgramCache]: Analyzing trace with hash 425340462, now seen corresponding path program 1 times
[2023-12-25 22:51:18,585 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 22:51:18,585 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1307875064]
[2023-12-25 22:51:18,586 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:51:18,586 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 22:51:19,006 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 22:51:19,006 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1302905399]
[2023-12-25 22:51:19,007 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:51:19,007 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 22:51:19,007 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 22:51:19,008 INFO  L229       MonitoredProcess]: Starting monitored process 72 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-25 22:51:19,010 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (72)] Waiting until timeout for monitored process
[2023-12-25 22:51:23,939 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 22:51:24,082 INFO  L262         TraceCheckSpWp]: Trace formula consists of 22568 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-12-25 22:51:24,134 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 22:51:24,304 INFO  L134       CoverageAnalysis]: Checked inductivity of 572 backedges. 228 proven. 0 refuted. 0 times theorem prover too weak. 344 trivial. 0 not checked.
[2023-12-25 22:51:24,304 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 22:51:24,304 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 22:51:24,304 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1307875064]
[2023-12-25 22:51:24,304 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 22:51:24,304 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1302905399]
[2023-12-25 22:51:24,304 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1302905399] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 22:51:24,304 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 22:51:24,305 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-12-25 22:51:24,305 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [700690208]
[2023-12-25 22:51:24,305 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 22:51:24,307 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-12-25 22:51:24,307 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 22:51:24,309 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-12-25 22:51:24,309 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-12-25 22:51:24,309 INFO  L87              Difference]: Start difference. First operand 7936 states and 13152 transitions. Second operand  has 7 states, 7 states have (on average 674.7142857142857) internal successors, (4723), 7 states have internal predecessors, (4723), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:51:24,622 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 22:51:24,623 INFO  L93              Difference]: Finished difference Result 21638 states and 35841 transitions.
[2023-12-25 22:51:24,623 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-12-25 22:51:24,624 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 674.7142857142857) internal successors, (4723), 7 states have internal predecessors, (4723), 0 states have call successors, (0), 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 5066
[2023-12-25 22:51:24,627 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 22:51:24,639 INFO  L225             Difference]: With dead ends: 21638
[2023-12-25 22:51:24,639 INFO  L226             Difference]: Without dead ends: 14458
[2023-12-25 22:51:24,646 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5075 GetRequests, 5063 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-12-25 22:51:24,646 INFO  L413           NwaCegarLoop]: 12234 mSDtfsCounter, 31926 mSDsluCounter, 48060 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31926 SdHoareTripleChecker+Valid, 60294 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-12-25 22:51:24,646 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [31926 Valid, 60294 Invalid, 48 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-12-25 22:51:24,655 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14458 states.
[2023-12-25 22:51:24,719 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14458 to 7941.
[2023-12-25 22:51:24,726 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7941 states, 7940 states have (on average 1.6573047858942065) internal successors, (13159), 7940 states have internal predecessors, (13159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:51:24,733 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7941 states to 7941 states and 13159 transitions.
[2023-12-25 22:51:24,733 INFO  L78                 Accepts]: Start accepts. Automaton has 7941 states and 13159 transitions. Word has length 5066
[2023-12-25 22:51:24,736 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 22:51:24,736 INFO  L495      AbstractCegarLoop]: Abstraction has 7941 states and 13159 transitions.
[2023-12-25 22:51:24,737 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 674.7142857142857) internal successors, (4723), 7 states have internal predecessors, (4723), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:51:24,737 INFO  L276                IsEmpty]: Start isEmpty. Operand 7941 states and 13159 transitions.
[2023-12-25 22:51:25,022 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5068
[2023-12-25 22:51:25,023 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 22:51:25,024 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-12-25 22:51:25,091 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (72)] Ended with exit code 0
[2023-12-25 22:51:25,233 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73,72 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 22:51:25,234 INFO  L420      AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 22:51:25,234 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 22:51:25,234 INFO  L85        PathProgramCache]: Analyzing trace with hash 2146281842, now seen corresponding path program 1 times
[2023-12-25 22:51:25,234 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 22:51:25,234 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1190949303]
[2023-12-25 22:51:25,235 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:51:25,235 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 22:51:25,547 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 22:51:25,547 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1330176361]
[2023-12-25 22:51:25,548 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:51:25,548 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 22:51:25,548 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 22:51:25,549 INFO  L229       MonitoredProcess]: Starting monitored process 73 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-25 22:51:25,551 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (73)] Waiting until timeout for monitored process
[2023-12-25 22:51:30,475 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 22:51:30,619 INFO  L262         TraceCheckSpWp]: Trace formula consists of 22572 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-12-25 22:51:30,673 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 22:51:30,880 INFO  L134       CoverageAnalysis]: Checked inductivity of 572 backedges. 232 proven. 0 refuted. 0 times theorem prover too weak. 340 trivial. 0 not checked.
[2023-12-25 22:51:30,881 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 22:51:30,881 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 22:51:30,881 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1190949303]
[2023-12-25 22:51:30,881 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 22:51:30,881 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1330176361]
[2023-12-25 22:51:30,881 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1330176361] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 22:51:30,881 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 22:51:30,881 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-12-25 22:51:30,881 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [797423608]
[2023-12-25 22:51:30,882 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 22:51:30,884 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-12-25 22:51:30,884 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 22:51:30,885 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-12-25 22:51:30,885 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-12-25 22:51:30,886 INFO  L87              Difference]: Start difference. First operand 7941 states and 13159 transitions. Second operand  has 7 states, 7 states have (on average 675.4285714285714) internal successors, (4728), 7 states have internal predecessors, (4728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:51:31,337 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 22:51:31,337 INFO  L93              Difference]: Finished difference Result 21653 states and 35862 transitions.
[2023-12-25 22:51:31,338 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-12-25 22:51:31,339 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 675.4285714285714) internal successors, (4728), 7 states have internal predecessors, (4728), 0 states have call successors, (0), 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 5067
[2023-12-25 22:51:31,342 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 22:51:31,354 INFO  L225             Difference]: With dead ends: 21653
[2023-12-25 22:51:31,354 INFO  L226             Difference]: Without dead ends: 14462
[2023-12-25 22:51:31,361 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5076 GetRequests, 5064 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-12-25 22:51:31,361 INFO  L413           NwaCegarLoop]: 12224 mSDtfsCounter, 31930 mSDsluCounter, 48030 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31930 SdHoareTripleChecker+Valid, 60254 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-12-25 22:51:31,361 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [31930 Valid, 60254 Invalid, 48 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-12-25 22:51:31,372 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14462 states.
[2023-12-25 22:51:31,444 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14462 to 7946.
[2023-12-25 22:51:31,451 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7946 states, 7945 states have (on average 1.6571428571428573) internal successors, (13166), 7945 states have internal predecessors, (13166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:51:31,460 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7946 states to 7946 states and 13166 transitions.
[2023-12-25 22:51:31,460 INFO  L78                 Accepts]: Start accepts. Automaton has 7946 states and 13166 transitions. Word has length 5067
[2023-12-25 22:51:31,462 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 22:51:31,462 INFO  L495      AbstractCegarLoop]: Abstraction has 7946 states and 13166 transitions.
[2023-12-25 22:51:31,463 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 675.4285714285714) internal successors, (4728), 7 states have internal predecessors, (4728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:51:31,463 INFO  L276                IsEmpty]: Start isEmpty. Operand 7946 states and 13166 transitions.
[2023-12-25 22:51:31,587 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5069
[2023-12-25 22:51:31,588 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 22:51:31,589 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-12-25 22:51:31,655 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (73)] Ended with exit code 0
[2023-12-25 22:51:31,802 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 73 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable74
[2023-12-25 22:51:31,802 INFO  L420      AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 22:51:31,802 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 22:51:31,803 INFO  L85        PathProgramCache]: Analyzing trace with hash 1731684284, now seen corresponding path program 1 times
[2023-12-25 22:51:31,803 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 22:51:31,803 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [963160571]
[2023-12-25 22:51:31,803 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:51:31,803 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 22:51:32,120 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 22:51:32,120 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [84422643]
[2023-12-25 22:51:32,121 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:51:32,121 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 22:51:32,121 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 22:51:32,122 INFO  L229       MonitoredProcess]: Starting monitored process 74 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-25 22:51:32,124 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (74)] Waiting until timeout for monitored process
[2023-12-25 22:51:37,222 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 22:51:37,355 INFO  L262         TraceCheckSpWp]: Trace formula consists of 22575 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-12-25 22:51:37,402 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 22:51:37,613 INFO  L134       CoverageAnalysis]: Checked inductivity of 572 backedges. 236 proven. 0 refuted. 0 times theorem prover too weak. 336 trivial. 0 not checked.
[2023-12-25 22:51:37,613 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 22:51:37,613 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 22:51:37,613 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [963160571]
[2023-12-25 22:51:37,613 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 22:51:37,613 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [84422643]
[2023-12-25 22:51:37,613 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [84422643] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 22:51:37,613 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 22:51:37,614 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-12-25 22:51:37,614 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1234638301]
[2023-12-25 22:51:37,614 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 22:51:37,616 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-12-25 22:51:37,616 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 22:51:37,618 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-12-25 22:51:37,618 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-12-25 22:51:37,618 INFO  L87              Difference]: Start difference. First operand 7946 states and 13166 transitions. Second operand  has 7 states, 7 states have (on average 676.1428571428571) internal successors, (4733), 7 states have internal predecessors, (4733), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:51:37,931 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 22:51:37,931 INFO  L93              Difference]: Finished difference Result 21668 states and 35883 transitions.
[2023-12-25 22:51:37,931 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-12-25 22:51:37,932 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 676.1428571428571) internal successors, (4733), 7 states have internal predecessors, (4733), 0 states have call successors, (0), 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 5068
[2023-12-25 22:51:37,935 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 22:51:37,948 INFO  L225             Difference]: With dead ends: 21668
[2023-12-25 22:51:37,948 INFO  L226             Difference]: Without dead ends: 14466
[2023-12-25 22:51:37,956 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5077 GetRequests, 5065 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-12-25 22:51:37,957 INFO  L413           NwaCegarLoop]: 12214 mSDtfsCounter, 31934 mSDsluCounter, 48000 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31934 SdHoareTripleChecker+Valid, 60214 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-12-25 22:51:37,957 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [31934 Valid, 60214 Invalid, 48 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-12-25 22:51:37,975 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14466 states.
[2023-12-25 22:51:38,049 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14466 to 7951.
[2023-12-25 22:51:38,056 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7951 states, 7950 states have (on average 1.6569811320754717) internal successors, (13173), 7950 states have internal predecessors, (13173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:51:38,064 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7951 states to 7951 states and 13173 transitions.
[2023-12-25 22:51:38,064 INFO  L78                 Accepts]: Start accepts. Automaton has 7951 states and 13173 transitions. Word has length 5068
[2023-12-25 22:51:38,066 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 22:51:38,066 INFO  L495      AbstractCegarLoop]: Abstraction has 7951 states and 13173 transitions.
[2023-12-25 22:51:38,067 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 676.1428571428571) internal successors, (4733), 7 states have internal predecessors, (4733), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:51:38,070 INFO  L276                IsEmpty]: Start isEmpty. Operand 7951 states and 13173 transitions.
[2023-12-25 22:51:38,292 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5070
[2023-12-25 22:51:38,293 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 22:51:38,294 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-12-25 22:51:38,359 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (74)] Ended with exit code 0
[2023-12-25 22:51:38,508 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75,74 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 22:51:38,508 INFO  L420      AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 22:51:38,509 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 22:51:38,509 INFO  L85        PathProgramCache]: Analyzing trace with hash -1053413016, now seen corresponding path program 1 times
[2023-12-25 22:51:38,509 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 22:51:38,509 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [553963665]
[2023-12-25 22:51:38,510 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:51:38,510 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 22:51:38,822 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 22:51:38,822 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [563630352]
[2023-12-25 22:51:38,823 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:51:38,823 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 22:51:38,823 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 22:51:38,824 INFO  L229       MonitoredProcess]: Starting monitored process 75 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-25 22:51:38,848 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (75)] Waiting until timeout for monitored process
[2023-12-25 22:51:43,805 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 22:51:43,947 INFO  L262         TraceCheckSpWp]: Trace formula consists of 22579 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-12-25 22:51:44,000 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 22:51:44,206 INFO  L134       CoverageAnalysis]: Checked inductivity of 572 backedges. 240 proven. 0 refuted. 0 times theorem prover too weak. 332 trivial. 0 not checked.
[2023-12-25 22:51:44,207 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 22:51:44,207 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 22:51:44,207 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [553963665]
[2023-12-25 22:51:44,207 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 22:51:44,207 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [563630352]
[2023-12-25 22:51:44,207 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [563630352] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 22:51:44,207 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 22:51:44,207 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-12-25 22:51:44,207 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [703953419]
[2023-12-25 22:51:44,207 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 22:51:44,380 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-12-25 22:51:44,380 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 22:51:44,382 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-12-25 22:51:44,383 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-12-25 22:51:44,383 INFO  L87              Difference]: Start difference. First operand 7951 states and 13173 transitions. Second operand  has 7 states, 7 states have (on average 676.8571428571429) internal successors, (4738), 7 states have internal predecessors, (4738), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:51:44,722 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 22:51:44,722 INFO  L93              Difference]: Finished difference Result 21683 states and 35904 transitions.
[2023-12-25 22:51:44,722 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-12-25 22:51:44,723 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 676.8571428571429) internal successors, (4738), 7 states have internal predecessors, (4738), 0 states have call successors, (0), 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 5069
[2023-12-25 22:51:44,726 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 22:51:44,739 INFO  L225             Difference]: With dead ends: 21683
[2023-12-25 22:51:44,740 INFO  L226             Difference]: Without dead ends: 14470
[2023-12-25 22:51:44,748 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5078 GetRequests, 5066 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-12-25 22:51:44,748 INFO  L413           NwaCegarLoop]: 12204 mSDtfsCounter, 31938 mSDsluCounter, 47970 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31938 SdHoareTripleChecker+Valid, 60174 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-12-25 22:51:44,748 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [31938 Valid, 60174 Invalid, 48 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-12-25 22:51:44,757 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14470 states.
[2023-12-25 22:51:44,823 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14470 to 7956.
[2023-12-25 22:51:44,831 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7956 states, 7955 states have (on average 1.6568196103079824) internal successors, (13180), 7955 states have internal predecessors, (13180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:51:44,839 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7956 states to 7956 states and 13180 transitions.
[2023-12-25 22:51:44,839 INFO  L78                 Accepts]: Start accepts. Automaton has 7956 states and 13180 transitions. Word has length 5069
[2023-12-25 22:51:44,842 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 22:51:44,842 INFO  L495      AbstractCegarLoop]: Abstraction has 7956 states and 13180 transitions.
[2023-12-25 22:51:44,843 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 676.8571428571429) internal successors, (4738), 7 states have internal predecessors, (4738), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:51:44,843 INFO  L276                IsEmpty]: Start isEmpty. Operand 7956 states and 13180 transitions.
[2023-12-25 22:51:44,969 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5071
[2023-12-25 22:51:44,969 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 22:51:44,970 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-12-25 22:51:45,042 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (75)] Ended with exit code 0
[2023-12-25 22:51:45,192 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76,75 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 22:51:45,193 INFO  L420      AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 22:51:45,193 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 22:51:45,193 INFO  L85        PathProgramCache]: Analyzing trace with hash 1487860938, now seen corresponding path program 1 times
[2023-12-25 22:51:45,193 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 22:51:45,193 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1507892739]
[2023-12-25 22:51:45,194 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:51:45,194 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 22:51:45,505 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 22:51:45,505 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [805850552]
[2023-12-25 22:51:45,506 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:51:45,506 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 22:51:45,506 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 22:51:45,507 INFO  L229       MonitoredProcess]: Starting monitored process 76 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-25 22:51:45,629 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (76)] Waiting until timeout for monitored process
[2023-12-25 22:51:50,550 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 22:51:50,691 INFO  L262         TraceCheckSpWp]: Trace formula consists of 22582 conjuncts, 21 conjunts are in the unsatisfiable core
[2023-12-25 22:51:50,743 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 22:51:50,961 INFO  L134       CoverageAnalysis]: Checked inductivity of 572 backedges. 244 proven. 0 refuted. 0 times theorem prover too weak. 328 trivial. 0 not checked.
[2023-12-25 22:51:50,962 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 22:51:50,962 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 22:51:50,962 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1507892739]
[2023-12-25 22:51:50,962 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 22:51:50,962 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [805850552]
[2023-12-25 22:51:50,962 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [805850552] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 22:51:50,962 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 22:51:50,962 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8
[2023-12-25 22:51:50,962 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [260023568]
[2023-12-25 22:51:50,963 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 22:51:50,965 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 8 states
[2023-12-25 22:51:50,965 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 22:51:50,967 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2023-12-25 22:51:50,967 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56
[2023-12-25 22:51:50,967 INFO  L87              Difference]: Start difference. First operand 7956 states and 13180 transitions. Second operand  has 8 states, 8 states have (on average 592.875) internal successors, (4743), 8 states have internal predecessors, (4743), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:51:51,469 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 22:51:51,469 INFO  L93              Difference]: Finished difference Result 21700 states and 35927 transitions.
[2023-12-25 22:51:51,470 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. 
[2023-12-25 22:51:51,471 INFO  L78                 Accepts]: Start accepts. Automaton has  has 8 states, 8 states have (on average 592.875) internal successors, (4743), 8 states have internal predecessors, (4743), 0 states have call successors, (0), 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 5070
[2023-12-25 22:51:51,474 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 22:51:51,484 INFO  L225             Difference]: With dead ends: 21700
[2023-12-25 22:51:51,484 INFO  L226             Difference]: Without dead ends: 14476
[2023-12-25 22:51:51,489 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5080 GetRequests, 5066 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240
[2023-12-25 22:51:51,489 INFO  L413           NwaCegarLoop]: 12193 mSDtfsCounter, 31941 mSDsluCounter, 60123 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31941 SdHoareTripleChecker+Valid, 72316 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-12-25 22:51:51,489 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [31941 Valid, 72316 Invalid, 74 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-12-25 22:51:51,497 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14476 states.
[2023-12-25 22:51:51,571 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14476 to 7961.
[2023-12-25 22:51:51,578 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7961 states, 7960 states have (on average 1.6566582914572865) internal successors, (13187), 7960 states have internal predecessors, (13187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:51:51,585 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7961 states to 7961 states and 13187 transitions.
[2023-12-25 22:51:51,586 INFO  L78                 Accepts]: Start accepts. Automaton has 7961 states and 13187 transitions. Word has length 5070
[2023-12-25 22:51:51,588 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 22:51:51,588 INFO  L495      AbstractCegarLoop]: Abstraction has 7961 states and 13187 transitions.
[2023-12-25 22:51:51,589 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 8 states, 8 states have (on average 592.875) internal successors, (4743), 8 states have internal predecessors, (4743), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:51:51,589 INFO  L276                IsEmpty]: Start isEmpty. Operand 7961 states and 13187 transitions.
[2023-12-25 22:51:51,716 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5072
[2023-12-25 22:51:51,716 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 22:51:51,717 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-12-25 22:51:51,793 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (76)] Forceful destruction successful, exit code 0
[2023-12-25 22:51:51,944 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 76 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable77
[2023-12-25 22:51:51,944 INFO  L420      AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 22:51:51,945 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 22:51:51,945 INFO  L85        PathProgramCache]: Analyzing trace with hash -878645026, now seen corresponding path program 1 times
[2023-12-25 22:51:51,945 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 22:51:51,945 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [259460279]
[2023-12-25 22:51:51,946 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:51:51,946 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 22:51:52,248 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 22:51:52,248 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1809642507]
[2023-12-25 22:51:52,249 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:51:52,249 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 22:51:52,250 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 22:51:52,250 INFO  L229       MonitoredProcess]: Starting monitored process 77 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-25 22:51:52,252 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (77)] Waiting until timeout for monitored process
[2023-12-25 22:51:57,274 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 22:51:57,429 INFO  L262         TraceCheckSpWp]: Trace formula consists of 22586 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-12-25 22:51:57,485 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 22:51:57,692 INFO  L134       CoverageAnalysis]: Checked inductivity of 572 backedges. 248 proven. 0 refuted. 0 times theorem prover too weak. 324 trivial. 0 not checked.
[2023-12-25 22:51:57,692 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 22:51:57,692 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 22:51:57,692 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [259460279]
[2023-12-25 22:51:57,692 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 22:51:57,692 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1809642507]
[2023-12-25 22:51:57,692 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1809642507] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 22:51:57,692 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 22:51:57,693 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-12-25 22:51:57,693 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2143358941]
[2023-12-25 22:51:57,693 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 22:51:57,695 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-12-25 22:51:57,695 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 22:51:57,697 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-12-25 22:51:57,697 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-12-25 22:51:57,698 INFO  L87              Difference]: Start difference. First operand 7961 states and 13187 transitions. Second operand  has 7 states, 7 states have (on average 678.2857142857143) internal successors, (4748), 7 states have internal predecessors, (4748), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:51:58,028 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 22:51:58,028 INFO  L93              Difference]: Finished difference Result 21713 states and 35946 transitions.
[2023-12-25 22:51:58,029 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-12-25 22:51:58,030 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 678.2857142857143) internal successors, (4748), 7 states have internal predecessors, (4748), 0 states have call successors, (0), 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 5071
[2023-12-25 22:51:58,033 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 22:51:58,049 INFO  L225             Difference]: With dead ends: 21713
[2023-12-25 22:51:58,049 INFO  L226             Difference]: Without dead ends: 14478
[2023-12-25 22:51:58,059 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5080 GetRequests, 5068 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-12-25 22:51:58,060 INFO  L413           NwaCegarLoop]: 12184 mSDtfsCounter, 31946 mSDsluCounter, 47910 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31946 SdHoareTripleChecker+Valid, 60094 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-12-25 22:51:58,060 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [31946 Valid, 60094 Invalid, 48 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-12-25 22:51:58,075 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14478 states.
[2023-12-25 22:51:58,175 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14478 to 7966.
[2023-12-25 22:51:58,183 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7966 states, 7965 states have (on average 1.656497175141243) internal successors, (13194), 7965 states have internal predecessors, (13194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:51:58,190 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7966 states to 7966 states and 13194 transitions.
[2023-12-25 22:51:58,191 INFO  L78                 Accepts]: Start accepts. Automaton has 7966 states and 13194 transitions. Word has length 5071
[2023-12-25 22:51:58,193 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 22:51:58,193 INFO  L495      AbstractCegarLoop]: Abstraction has 7966 states and 13194 transitions.
[2023-12-25 22:51:58,194 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 678.2857142857143) internal successors, (4748), 7 states have internal predecessors, (4748), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:51:58,194 INFO  L276                IsEmpty]: Start isEmpty. Operand 7966 states and 13194 transitions.
[2023-12-25 22:51:58,409 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5073
[2023-12-25 22:51:58,410 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 22:51:58,411 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-12-25 22:51:58,491 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (77)] Forceful destruction successful, exit code 0
[2023-12-25 22:51:58,625 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 77 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable78
[2023-12-25 22:51:58,625 INFO  L420      AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 22:51:58,626 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 22:51:58,626 INFO  L85        PathProgramCache]: Analyzing trace with hash -895011496, now seen corresponding path program 1 times
[2023-12-25 22:51:58,626 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 22:51:58,626 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [423536843]
[2023-12-25 22:51:58,627 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:51:58,627 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 22:51:58,926 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 22:51:58,926 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1915284377]
[2023-12-25 22:51:58,927 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:51:58,927 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 22:51:58,927 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 22:51:58,928 INFO  L229       MonitoredProcess]: Starting monitored process 78 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-25 22:51:58,929 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (78)] Waiting until timeout for monitored process
[2023-12-25 22:52:03,911 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 22:52:04,062 INFO  L262         TraceCheckSpWp]: Trace formula consists of 22589 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-12-25 22:52:04,109 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 22:52:04,311 INFO  L134       CoverageAnalysis]: Checked inductivity of 572 backedges. 252 proven. 0 refuted. 0 times theorem prover too weak. 320 trivial. 0 not checked.
[2023-12-25 22:52:04,311 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 22:52:04,311 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 22:52:04,311 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [423536843]
[2023-12-25 22:52:04,311 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 22:52:04,311 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1915284377]
[2023-12-25 22:52:04,311 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1915284377] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 22:52:04,311 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 22:52:04,312 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-12-25 22:52:04,312 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1147382678]
[2023-12-25 22:52:04,312 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 22:52:04,314 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-12-25 22:52:04,314 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 22:52:04,316 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-12-25 22:52:04,316 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-12-25 22:52:04,316 INFO  L87              Difference]: Start difference. First operand 7966 states and 13194 transitions. Second operand  has 7 states, 7 states have (on average 679.0) internal successors, (4753), 7 states have internal predecessors, (4753), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:52:04,823 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 22:52:04,823 INFO  L93              Difference]: Finished difference Result 21728 states and 35967 transitions.
[2023-12-25 22:52:04,823 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-12-25 22:52:04,824 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 679.0) internal successors, (4753), 7 states have internal predecessors, (4753), 0 states have call successors, (0), 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 5072
[2023-12-25 22:52:04,827 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 22:52:04,835 INFO  L225             Difference]: With dead ends: 21728
[2023-12-25 22:52:04,835 INFO  L226             Difference]: Without dead ends: 14482
[2023-12-25 22:52:04,838 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5081 GetRequests, 5069 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-12-25 22:52:04,838 INFO  L413           NwaCegarLoop]: 12174 mSDtfsCounter, 31950 mSDsluCounter, 47880 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31950 SdHoareTripleChecker+Valid, 60054 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time
[2023-12-25 22:52:04,838 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [31950 Valid, 60054 Invalid, 48 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time]
[2023-12-25 22:52:04,844 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14482 states.
[2023-12-25 22:52:04,896 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14482 to 7971.
[2023-12-25 22:52:04,903 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7971 states, 7970 states have (on average 1.65633626097867) internal successors, (13201), 7970 states have internal predecessors, (13201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:52:04,910 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7971 states to 7971 states and 13201 transitions.
[2023-12-25 22:52:04,910 INFO  L78                 Accepts]: Start accepts. Automaton has 7971 states and 13201 transitions. Word has length 5072
[2023-12-25 22:52:04,912 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 22:52:04,912 INFO  L495      AbstractCegarLoop]: Abstraction has 7971 states and 13201 transitions.
[2023-12-25 22:52:04,913 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 679.0) internal successors, (4753), 7 states have internal predecessors, (4753), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:52:04,913 INFO  L276                IsEmpty]: Start isEmpty. Operand 7971 states and 13201 transitions.
[2023-12-25 22:52:05,037 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5074
[2023-12-25 22:52:05,038 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 22:52:05,039 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-12-25 22:52:05,102 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (78)] Forceful destruction successful, exit code 0
[2023-12-25 22:52:05,264 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79,78 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 22:52:05,264 INFO  L420      AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 22:52:05,265 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 22:52:05,265 INFO  L85        PathProgramCache]: Analyzing trace with hash -680671276, now seen corresponding path program 1 times
[2023-12-25 22:52:05,265 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 22:52:05,265 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [299287920]
[2023-12-25 22:52:05,266 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:52:05,266 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 22:52:05,551 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 22:52:05,551 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1542874693]
[2023-12-25 22:52:05,552 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:52:05,552 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 22:52:05,553 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 22:52:05,553 INFO  L229       MonitoredProcess]: Starting monitored process 79 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-25 22:52:05,554 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (79)] Waiting until timeout for monitored process
[2023-12-25 22:52:10,597 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 22:52:10,731 INFO  L262         TraceCheckSpWp]: Trace formula consists of 22593 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-12-25 22:52:10,778 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 22:52:10,985 INFO  L134       CoverageAnalysis]: Checked inductivity of 572 backedges. 256 proven. 0 refuted. 0 times theorem prover too weak. 316 trivial. 0 not checked.
[2023-12-25 22:52:10,986 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 22:52:10,986 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 22:52:10,986 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [299287920]
[2023-12-25 22:52:10,986 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 22:52:10,986 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1542874693]
[2023-12-25 22:52:10,986 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1542874693] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 22:52:10,986 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 22:52:10,986 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-12-25 22:52:10,986 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [903381146]
[2023-12-25 22:52:10,986 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 22:52:10,989 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-12-25 22:52:10,989 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 22:52:10,991 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-12-25 22:52:10,991 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-12-25 22:52:10,991 INFO  L87              Difference]: Start difference. First operand 7971 states and 13201 transitions. Second operand  has 7 states, 7 states have (on average 679.7142857142857) internal successors, (4758), 7 states have internal predecessors, (4758), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:52:11,304 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 22:52:11,305 INFO  L93              Difference]: Finished difference Result 21743 states and 35988 transitions.
[2023-12-25 22:52:11,305 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-12-25 22:52:11,306 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 679.7142857142857) internal successors, (4758), 7 states have internal predecessors, (4758), 0 states have call successors, (0), 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 5073
[2023-12-25 22:52:11,309 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 22:52:11,322 INFO  L225             Difference]: With dead ends: 21743
[2023-12-25 22:52:11,323 INFO  L226             Difference]: Without dead ends: 14486
[2023-12-25 22:52:11,331 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5082 GetRequests, 5070 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2023-12-25 22:52:11,331 INFO  L413           NwaCegarLoop]: 12164 mSDtfsCounter, 31954 mSDsluCounter, 47850 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31954 SdHoareTripleChecker+Valid, 60014 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-12-25 22:52:11,331 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [31954 Valid, 60014 Invalid, 48 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-12-25 22:52:11,343 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14486 states.
[2023-12-25 22:52:11,507 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14486 to 7976.
[2023-12-25 22:52:11,515 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7976 states, 7975 states have (on average 1.6561755485893417) internal successors, (13208), 7975 states have internal predecessors, (13208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:52:11,523 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7976 states to 7976 states and 13208 transitions.
[2023-12-25 22:52:11,523 INFO  L78                 Accepts]: Start accepts. Automaton has 7976 states and 13208 transitions. Word has length 5073
[2023-12-25 22:52:11,525 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 22:52:11,525 INFO  L495      AbstractCegarLoop]: Abstraction has 7976 states and 13208 transitions.
[2023-12-25 22:52:11,526 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 679.7142857142857) internal successors, (4758), 7 states have internal predecessors, (4758), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:52:11,526 INFO  L276                IsEmpty]: Start isEmpty. Operand 7976 states and 13208 transitions.
[2023-12-25 22:52:11,652 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5075
[2023-12-25 22:52:11,652 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 22:52:11,653 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-12-25 22:52:11,719 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (79)] Ended with exit code 0
[2023-12-25 22:52:11,866 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80,79 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 22:52:11,867 INFO  L420      AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 22:52:11,867 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 22:52:11,868 INFO  L85        PathProgramCache]: Analyzing trace with hash 308185446, now seen corresponding path program 1 times
[2023-12-25 22:52:11,868 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 22:52:11,868 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2108237692]
[2023-12-25 22:52:11,868 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:52:11,868 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 22:52:12,178 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 22:52:12,179 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [144407808]
[2023-12-25 22:52:12,180 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:52:12,180 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 22:52:12,180 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 22:52:12,181 INFO  L229       MonitoredProcess]: Starting monitored process 80 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-25 22:52:12,181 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (80)] Waiting until timeout for monitored process
[2023-12-25 22:52:16,906 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 22:52:17,042 INFO  L262         TraceCheckSpWp]: Trace formula consists of 22596 conjuncts, 17 conjunts are in the unsatisfiable core
[2023-12-25 22:52:17,240 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 22:52:17,442 INFO  L134       CoverageAnalysis]: Checked inductivity of 572 backedges. 258 proven. 0 refuted. 0 times theorem prover too weak. 314 trivial. 0 not checked.
[2023-12-25 22:52:17,443 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 22:52:17,443 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 22:52:17,443 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2108237692]
[2023-12-25 22:52:17,443 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 22:52:17,443 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [144407808]
[2023-12-25 22:52:17,443 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [144407808] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 22:52:17,443 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 22:52:17,443 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-12-25 22:52:17,443 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1699744460]
[2023-12-25 22:52:17,443 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 22:52:17,446 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-12-25 22:52:17,446 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 22:52:17,447 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-12-25 22:52:17,447 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-12-25 22:52:17,448 INFO  L87              Difference]: Start difference. First operand 7976 states and 13208 transitions. Second operand  has 7 states, 7 states have (on average 680.1428571428571) internal successors, (4761), 7 states have internal predecessors, (4761), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:52:17,754 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 22:52:17,754 INFO  L93              Difference]: Finished difference Result 21751 states and 35998 transitions.
[2023-12-25 22:52:17,754 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. 
[2023-12-25 22:52:17,755 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 680.1428571428571) internal successors, (4761), 7 states have internal predecessors, (4761), 0 states have call successors, (0), 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 5074
[2023-12-25 22:52:17,758 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 22:52:17,770 INFO  L225             Difference]: With dead ends: 21751
[2023-12-25 22:52:17,770 INFO  L226             Difference]: Without dead ends: 14483
[2023-12-25 22:52:17,776 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5082 GetRequests, 5071 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156
[2023-12-25 22:52:17,777 INFO  L413           NwaCegarLoop]: 12155 mSDtfsCounter, 31950 mSDsluCounter, 47821 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31950 SdHoareTripleChecker+Valid, 59976 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-12-25 22:52:17,777 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [31950 Valid, 59976 Invalid, 47 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-12-25 22:52:17,785 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14483 states.
[2023-12-25 22:52:17,848 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14483 to 7978.
[2023-12-25 22:52:17,854 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7978 states, 7977 states have (on average 1.656011031716184) internal successors, (13210), 7977 states have internal predecessors, (13210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:52:17,860 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7978 states to 7978 states and 13210 transitions.
[2023-12-25 22:52:17,860 INFO  L78                 Accepts]: Start accepts. Automaton has 7978 states and 13210 transitions. Word has length 5074
[2023-12-25 22:52:17,862 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 22:52:17,862 INFO  L495      AbstractCegarLoop]: Abstraction has 7978 states and 13210 transitions.
[2023-12-25 22:52:17,863 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 680.1428571428571) internal successors, (4761), 7 states have internal predecessors, (4761), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:52:17,863 INFO  L276                IsEmpty]: Start isEmpty. Operand 7978 states and 13210 transitions.
[2023-12-25 22:52:17,986 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5076
[2023-12-25 22:52:17,986 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 22:52:17,987 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-12-25 22:52:18,047 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (80)] Forceful destruction successful, exit code 0
[2023-12-25 22:52:18,212 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 80 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable81
[2023-12-25 22:52:18,212 INFO  L420      AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 22:52:18,213 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 22:52:18,213 INFO  L85        PathProgramCache]: Analyzing trace with hash -892416594, now seen corresponding path program 1 times
[2023-12-25 22:52:18,213 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 22:52:18,213 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2127883408]
[2023-12-25 22:52:18,214 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:52:18,214 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 22:52:18,568 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 22:52:18,569 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [23257651]
[2023-12-25 22:52:18,570 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:52:18,570 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 22:52:18,570 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 22:52:18,571 INFO  L229       MonitoredProcess]: Starting monitored process 81 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-25 22:52:18,571 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (81)] Waiting until timeout for monitored process
[2023-12-25 22:52:23,529 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 22:52:23,668 INFO  L262         TraceCheckSpWp]: Trace formula consists of 22599 conjuncts, 17 conjunts are in the unsatisfiable core
[2023-12-25 22:52:23,720 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 22:52:23,903 INFO  L134       CoverageAnalysis]: Checked inductivity of 572 backedges. 254 proven. 0 refuted. 0 times theorem prover too weak. 318 trivial. 0 not checked.
[2023-12-25 22:52:23,904 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 22:52:23,904 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 22:52:23,904 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2127883408]
[2023-12-25 22:52:23,904 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 22:52:23,904 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [23257651]
[2023-12-25 22:52:23,904 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [23257651] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 22:52:23,904 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 22:52:23,904 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-12-25 22:52:23,905 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1483876952]
[2023-12-25 22:52:23,905 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 22:52:23,907 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-12-25 22:52:23,907 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 22:52:23,909 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-12-25 22:52:23,909 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-12-25 22:52:23,909 INFO  L87              Difference]: Start difference. First operand 7978 states and 13210 transitions. Second operand  has 7 states, 7 states have (on average 680.0) internal successors, (4760), 7 states have internal predecessors, (4760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:52:24,222 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 22:52:24,222 INFO  L93              Difference]: Finished difference Result 21755 states and 36000 transitions.
[2023-12-25 22:52:24,222 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. 
[2023-12-25 22:52:24,223 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 680.0) internal successors, (4760), 7 states have internal predecessors, (4760), 0 states have call successors, (0), 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 5075
[2023-12-25 22:52:24,227 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 22:52:24,239 INFO  L225             Difference]: With dead ends: 21755
[2023-12-25 22:52:24,239 INFO  L226             Difference]: Without dead ends: 14491
[2023-12-25 22:52:24,246 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5083 GetRequests, 5072 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156
[2023-12-25 22:52:24,247 INFO  L413           NwaCegarLoop]: 12165 mSDtfsCounter, 31946 mSDsluCounter, 47851 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31946 SdHoareTripleChecker+Valid, 60016 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-12-25 22:52:24,247 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [31946 Valid, 60016 Invalid, 47 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-12-25 22:52:24,259 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14491 states.
[2023-12-25 22:52:24,336 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14491 to 7978.
[2023-12-25 22:52:24,343 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7978 states, 7977 states have (on average 1.656011031716184) internal successors, (13210), 7977 states have internal predecessors, (13210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:52:24,350 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7978 states to 7978 states and 13210 transitions.
[2023-12-25 22:52:24,351 INFO  L78                 Accepts]: Start accepts. Automaton has 7978 states and 13210 transitions. Word has length 5075
[2023-12-25 22:52:24,353 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 22:52:24,353 INFO  L495      AbstractCegarLoop]: Abstraction has 7978 states and 13210 transitions.
[2023-12-25 22:52:24,354 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 680.0) internal successors, (4760), 7 states have internal predecessors, (4760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:52:24,354 INFO  L276                IsEmpty]: Start isEmpty. Operand 7978 states and 13210 transitions.
[2023-12-25 22:52:24,578 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5077
[2023-12-25 22:52:24,578 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 22:52:24,579 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-12-25 22:52:24,645 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (81)] Forceful destruction successful, exit code 0
[2023-12-25 22:52:24,797 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82,81 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 22:52:24,798 INFO  L420      AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 22:52:24,798 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 22:52:24,798 INFO  L85        PathProgramCache]: Analyzing trace with hash -1242637274, now seen corresponding path program 1 times
[2023-12-25 22:52:24,798 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 22:52:24,798 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [597797097]
[2023-12-25 22:52:24,799 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:52:24,799 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 22:52:25,115 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 22:52:25,115 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1034585830]
[2023-12-25 22:52:25,116 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:52:25,116 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 22:52:25,117 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 22:52:25,117 INFO  L229       MonitoredProcess]: Starting monitored process 82 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-25 22:52:25,118 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (82)] Waiting until timeout for monitored process
[2023-12-25 22:52:30,075 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 22:52:30,234 INFO  L262         TraceCheckSpWp]: Trace formula consists of 22602 conjuncts, 21 conjunts are in the unsatisfiable core
[2023-12-25 22:52:30,293 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 22:52:30,697 INFO  L134       CoverageAnalysis]: Checked inductivity of 572 backedges. 250 proven. 0 refuted. 0 times theorem prover too weak. 322 trivial. 0 not checked.
[2023-12-25 22:52:30,698 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 22:52:30,698 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 22:52:30,698 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [597797097]
[2023-12-25 22:52:30,698 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 22:52:30,698 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1034585830]
[2023-12-25 22:52:30,698 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1034585830] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 22:52:30,698 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 22:52:30,698 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8
[2023-12-25 22:52:30,699 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1036731474]
[2023-12-25 22:52:30,699 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 22:52:30,701 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 8 states
[2023-12-25 22:52:30,701 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 22:52:30,703 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2023-12-25 22:52:30,703 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56
[2023-12-25 22:52:30,703 INFO  L87              Difference]: Start difference. First operand 7978 states and 13210 transitions. Second operand  has 8 states, 8 states have (on average 594.875) internal successors, (4759), 8 states have internal predecessors, (4759), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:52:31,052 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 22:52:31,052 INFO  L93              Difference]: Finished difference Result 21755 states and 36000 transitions.
[2023-12-25 22:52:31,052 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. 
[2023-12-25 22:52:31,053 INFO  L78                 Accepts]: Start accepts. Automaton has  has 8 states, 8 states have (on average 594.875) internal successors, (4759), 8 states have internal predecessors, (4759), 0 states have call successors, (0), 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 5076
[2023-12-25 22:52:31,056 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 22:52:31,069 INFO  L225             Difference]: With dead ends: 21755
[2023-12-25 22:52:31,070 INFO  L226             Difference]: Without dead ends: 14497
[2023-12-25 22:52:31,077 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5084 GetRequests, 5072 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182
[2023-12-25 22:52:31,077 INFO  L413           NwaCegarLoop]: 12175 mSDtfsCounter, 31942 mSDsluCounter, 58634 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31942 SdHoareTripleChecker+Valid, 70809 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-12-25 22:52:31,077 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [31942 Valid, 70809 Invalid, 52 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-12-25 22:52:31,087 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14497 states.
[2023-12-25 22:52:31,155 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14497 to 7978.
[2023-12-25 22:52:31,161 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7978 states, 7977 states have (on average 1.656011031716184) internal successors, (13210), 7977 states have internal predecessors, (13210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:52:31,168 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7978 states to 7978 states and 13210 transitions.
[2023-12-25 22:52:31,169 INFO  L78                 Accepts]: Start accepts. Automaton has 7978 states and 13210 transitions. Word has length 5076
[2023-12-25 22:52:31,171 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 22:52:31,171 INFO  L495      AbstractCegarLoop]: Abstraction has 7978 states and 13210 transitions.
[2023-12-25 22:52:31,172 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 8 states, 8 states have (on average 594.875) internal successors, (4759), 8 states have internal predecessors, (4759), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:52:31,172 INFO  L276                IsEmpty]: Start isEmpty. Operand 7978 states and 13210 transitions.
[2023-12-25 22:52:31,297 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5078
[2023-12-25 22:52:31,297 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 22:52:31,298 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-12-25 22:52:31,368 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (82)] Ended with exit code 0
[2023-12-25 22:52:31,512 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83,82 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 22:52:31,512 INFO  L420      AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 22:52:31,513 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 22:52:31,513 INFO  L85        PathProgramCache]: Analyzing trace with hash -162767062, now seen corresponding path program 1 times
[2023-12-25 22:52:31,513 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 22:52:31,513 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1104060199]
[2023-12-25 22:52:31,513 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:52:31,514 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 22:52:31,829 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 22:52:31,829 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1112422783]
[2023-12-25 22:52:31,830 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:52:31,831 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 22:52:31,831 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 22:52:31,832 INFO  L229       MonitoredProcess]: Starting monitored process 83 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-25 22:52:31,832 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (83)] Waiting until timeout for monitored process
[2023-12-25 22:52:36,914 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 22:52:37,075 INFO  L262         TraceCheckSpWp]: Trace formula consists of 22605 conjuncts, 17 conjunts are in the unsatisfiable core
[2023-12-25 22:52:37,129 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 22:52:37,306 INFO  L134       CoverageAnalysis]: Checked inductivity of 572 backedges. 246 proven. 0 refuted. 0 times theorem prover too weak. 326 trivial. 0 not checked.
[2023-12-25 22:52:37,306 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 22:52:37,306 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 22:52:37,306 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1104060199]
[2023-12-25 22:52:37,306 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 22:52:37,306 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1112422783]
[2023-12-25 22:52:37,306 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1112422783] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 22:52:37,306 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 22:52:37,307 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-12-25 22:52:37,307 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1543885551]
[2023-12-25 22:52:37,307 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 22:52:37,309 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-12-25 22:52:37,309 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 22:52:37,311 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-12-25 22:52:37,311 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-12-25 22:52:37,311 INFO  L87              Difference]: Start difference. First operand 7978 states and 13210 transitions. Second operand  has 7 states, 7 states have (on average 679.7142857142857) internal successors, (4758), 7 states have internal predecessors, (4758), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:52:37,637 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 22:52:37,638 INFO  L93              Difference]: Finished difference Result 21755 states and 36000 transitions.
[2023-12-25 22:52:37,638 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. 
[2023-12-25 22:52:37,639 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 679.7142857142857) internal successors, (4758), 7 states have internal predecessors, (4758), 0 states have call successors, (0), 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 5077
[2023-12-25 22:52:37,642 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 22:52:37,657 INFO  L225             Difference]: With dead ends: 21755
[2023-12-25 22:52:37,657 INFO  L226             Difference]: Without dead ends: 14503
[2023-12-25 22:52:37,666 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5085 GetRequests, 5074 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156
[2023-12-25 22:52:37,666 INFO  L413           NwaCegarLoop]: 12185 mSDtfsCounter, 31938 mSDsluCounter, 47911 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31938 SdHoareTripleChecker+Valid, 60096 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-12-25 22:52:37,666 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [31938 Valid, 60096 Invalid, 47 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-12-25 22:52:37,678 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14503 states.
[2023-12-25 22:52:37,756 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14503 to 7978.
[2023-12-25 22:52:37,762 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7978 states, 7977 states have (on average 1.656011031716184) internal successors, (13210), 7977 states have internal predecessors, (13210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:52:37,769 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7978 states to 7978 states and 13210 transitions.
[2023-12-25 22:52:37,769 INFO  L78                 Accepts]: Start accepts. Automaton has 7978 states and 13210 transitions. Word has length 5077
[2023-12-25 22:52:37,771 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 22:52:37,771 INFO  L495      AbstractCegarLoop]: Abstraction has 7978 states and 13210 transitions.
[2023-12-25 22:52:37,772 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 679.7142857142857) internal successors, (4758), 7 states have internal predecessors, (4758), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:52:37,773 INFO  L276                IsEmpty]: Start isEmpty. Operand 7978 states and 13210 transitions.
[2023-12-25 22:52:37,967 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5079
[2023-12-25 22:52:37,967 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 22:52:37,968 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-12-25 22:52:38,036 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (83)] Forceful destruction successful, exit code 0
[2023-12-25 22:52:38,192 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 83 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable84
[2023-12-25 22:52:38,193 INFO  L420      AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 22:52:38,193 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 22:52:38,193 INFO  L85        PathProgramCache]: Analyzing trace with hash 1455699558, now seen corresponding path program 1 times
[2023-12-25 22:52:38,193 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 22:52:38,193 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [353836582]
[2023-12-25 22:52:38,194 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:52:38,194 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 22:52:38,501 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 22:52:38,501 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [71302455]
[2023-12-25 22:52:38,502 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:52:38,502 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 22:52:38,502 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 22:52:38,503 INFO  L229       MonitoredProcess]: Starting monitored process 84 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-25 22:52:38,505 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (84)] Waiting until timeout for monitored process
[2023-12-25 22:52:43,509 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 22:52:43,667 INFO  L262         TraceCheckSpWp]: Trace formula consists of 22608 conjuncts, 21 conjunts are in the unsatisfiable core
[2023-12-25 22:52:43,723 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 22:52:43,942 INFO  L134       CoverageAnalysis]: Checked inductivity of 572 backedges. 242 proven. 0 refuted. 0 times theorem prover too weak. 330 trivial. 0 not checked.
[2023-12-25 22:52:43,942 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 22:52:43,942 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 22:52:43,942 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [353836582]
[2023-12-25 22:52:43,943 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 22:52:43,943 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [71302455]
[2023-12-25 22:52:43,943 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [71302455] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 22:52:43,943 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 22:52:43,943 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8
[2023-12-25 22:52:43,943 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [985005472]
[2023-12-25 22:52:43,943 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 22:52:43,946 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 8 states
[2023-12-25 22:52:43,947 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 22:52:43,950 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2023-12-25 22:52:43,950 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56
[2023-12-25 22:52:43,951 INFO  L87              Difference]: Start difference. First operand 7978 states and 13210 transitions. Second operand  has 8 states, 8 states have (on average 594.625) internal successors, (4757), 8 states have internal predecessors, (4757), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:52:44,431 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 22:52:44,431 INFO  L93              Difference]: Finished difference Result 21755 states and 36000 transitions.
[2023-12-25 22:52:44,431 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. 
[2023-12-25 22:52:44,432 INFO  L78                 Accepts]: Start accepts. Automaton has  has 8 states, 8 states have (on average 594.625) internal successors, (4757), 8 states have internal predecessors, (4757), 0 states have call successors, (0), 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 5078
[2023-12-25 22:52:44,435 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 22:52:44,445 INFO  L225             Difference]: With dead ends: 21755
[2023-12-25 22:52:44,445 INFO  L226             Difference]: Without dead ends: 14509
[2023-12-25 22:52:44,449 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5086 GetRequests, 5074 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182
[2023-12-25 22:52:44,449 INFO  L413           NwaCegarLoop]: 12195 mSDtfsCounter, 31934 mSDsluCounter, 58700 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31934 SdHoareTripleChecker+Valid, 70895 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-12-25 22:52:44,449 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [31934 Valid, 70895 Invalid, 52 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-12-25 22:52:44,456 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14509 states.
[2023-12-25 22:52:44,520 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14509 to 7978.
[2023-12-25 22:52:44,526 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7978 states, 7977 states have (on average 1.656011031716184) internal successors, (13210), 7977 states have internal predecessors, (13210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:52:44,536 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7978 states to 7978 states and 13210 transitions.
[2023-12-25 22:52:44,536 INFO  L78                 Accepts]: Start accepts. Automaton has 7978 states and 13210 transitions. Word has length 5078
[2023-12-25 22:52:44,538 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 22:52:44,538 INFO  L495      AbstractCegarLoop]: Abstraction has 7978 states and 13210 transitions.
[2023-12-25 22:52:44,539 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 8 states, 8 states have (on average 594.625) internal successors, (4757), 8 states have internal predecessors, (4757), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:52:44,539 INFO  L276                IsEmpty]: Start isEmpty. Operand 7978 states and 13210 transitions.
[2023-12-25 22:52:44,666 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5080
[2023-12-25 22:52:44,667 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 22:52:44,668 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-12-25 22:52:44,744 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (84)] Ended with exit code 0
[2023-12-25 22:52:44,888 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85,84 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 22:52:44,888 INFO  L420      AbstractCegarLoop]: === Iteration 87 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 22:52:44,889 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 22:52:44,889 INFO  L85        PathProgramCache]: Analyzing trace with hash -1994345434, now seen corresponding path program 1 times
[2023-12-25 22:52:44,889 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 22:52:44,889 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [506846552]
[2023-12-25 22:52:44,890 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:52:44,890 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 22:52:45,222 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 22:52:45,222 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1902877824]
[2023-12-25 22:52:45,223 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:52:45,223 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 22:52:45,224 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 22:52:45,224 INFO  L229       MonitoredProcess]: Starting monitored process 85 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-25 22:52:45,225 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (85)] Waiting until timeout for monitored process
[2023-12-25 22:52:50,267 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 22:52:50,414 INFO  L262         TraceCheckSpWp]: Trace formula consists of 22611 conjuncts, 17 conjunts are in the unsatisfiable core
[2023-12-25 22:52:50,467 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 22:52:50,800 INFO  L134       CoverageAnalysis]: Checked inductivity of 572 backedges. 238 proven. 0 refuted. 0 times theorem prover too weak. 334 trivial. 0 not checked.
[2023-12-25 22:52:50,800 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 22:52:50,800 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 22:52:50,800 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [506846552]
[2023-12-25 22:52:50,800 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 22:52:50,801 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1902877824]
[2023-12-25 22:52:50,801 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1902877824] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 22:52:50,801 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 22:52:50,801 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-12-25 22:52:50,801 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [623347995]
[2023-12-25 22:52:50,801 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 22:52:50,803 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-12-25 22:52:50,804 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 22:52:50,805 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-12-25 22:52:50,805 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-12-25 22:52:50,806 INFO  L87              Difference]: Start difference. First operand 7978 states and 13210 transitions. Second operand  has 7 states, 7 states have (on average 679.4285714285714) internal successors, (4756), 7 states have internal predecessors, (4756), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:52:51,190 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 22:52:51,190 INFO  L93              Difference]: Finished difference Result 21755 states and 36000 transitions.
[2023-12-25 22:52:51,190 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. 
[2023-12-25 22:52:51,191 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 679.4285714285714) internal successors, (4756), 7 states have internal predecessors, (4756), 0 states have call successors, (0), 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 5079
[2023-12-25 22:52:51,194 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 22:52:51,207 INFO  L225             Difference]: With dead ends: 21755
[2023-12-25 22:52:51,208 INFO  L226             Difference]: Without dead ends: 14515
[2023-12-25 22:52:51,215 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5087 GetRequests, 5076 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156
[2023-12-25 22:52:51,216 INFO  L413           NwaCegarLoop]: 12205 mSDtfsCounter, 31930 mSDsluCounter, 47971 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31930 SdHoareTripleChecker+Valid, 60176 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-12-25 22:52:51,216 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [31930 Valid, 60176 Invalid, 47 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-12-25 22:52:51,225 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14515 states.
[2023-12-25 22:52:51,294 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14515 to 7978.
[2023-12-25 22:52:51,301 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7978 states, 7977 states have (on average 1.656011031716184) internal successors, (13210), 7977 states have internal predecessors, (13210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:52:51,308 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7978 states to 7978 states and 13210 transitions.
[2023-12-25 22:52:51,308 INFO  L78                 Accepts]: Start accepts. Automaton has 7978 states and 13210 transitions. Word has length 5079
[2023-12-25 22:52:51,310 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 22:52:51,310 INFO  L495      AbstractCegarLoop]: Abstraction has 7978 states and 13210 transitions.
[2023-12-25 22:52:51,311 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 679.4285714285714) internal successors, (4756), 7 states have internal predecessors, (4756), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:52:51,311 INFO  L276                IsEmpty]: Start isEmpty. Operand 7978 states and 13210 transitions.
[2023-12-25 22:52:51,440 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5081
[2023-12-25 22:52:51,440 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 22:52:51,442 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-12-25 22:52:51,511 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (85)] Forceful destruction successful, exit code 0
[2023-12-25 22:52:51,647 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86,85 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 22:52:51,647 INFO  L420      AbstractCegarLoop]: === Iteration 88 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 22:52:51,648 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 22:52:51,649 INFO  L85        PathProgramCache]: Analyzing trace with hash 1892816934, now seen corresponding path program 1 times
[2023-12-25 22:52:51,649 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 22:52:51,649 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [149027375]
[2023-12-25 22:52:51,649 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:52:51,649 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 22:52:51,972 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 22:52:51,973 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [756531736]
[2023-12-25 22:52:51,974 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:52:51,982 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 22:52:51,982 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 22:52:51,983 INFO  L229       MonitoredProcess]: Starting monitored process 86 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-25 22:52:52,012 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (86)] Waiting until timeout for monitored process
[2023-12-25 22:52:57,115 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 22:52:57,247 INFO  L262         TraceCheckSpWp]: Trace formula consists of 22614 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-12-25 22:52:57,292 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 22:52:57,494 INFO  L134       CoverageAnalysis]: Checked inductivity of 572 backedges. 234 proven. 0 refuted. 0 times theorem prover too weak. 338 trivial. 0 not checked.
[2023-12-25 22:52:57,494 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 22:52:57,494 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 22:52:57,494 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [149027375]
[2023-12-25 22:52:57,494 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 22:52:57,494 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [756531736]
[2023-12-25 22:52:57,494 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [756531736] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 22:52:57,494 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 22:52:57,495 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8
[2023-12-25 22:52:57,495 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1470376559]
[2023-12-25 22:52:57,495 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 22:52:57,497 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 8 states
[2023-12-25 22:52:57,497 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 22:52:57,499 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2023-12-25 22:52:57,499 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56
[2023-12-25 22:52:57,500 INFO  L87              Difference]: Start difference. First operand 7978 states and 13210 transitions. Second operand  has 8 states, 8 states have (on average 594.375) internal successors, (4755), 8 states have internal predecessors, (4755), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:52:57,846 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 22:52:57,846 INFO  L93              Difference]: Finished difference Result 21755 states and 36000 transitions.
[2023-12-25 22:52:57,846 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. 
[2023-12-25 22:52:57,847 INFO  L78                 Accepts]: Start accepts. Automaton has  has 8 states, 8 states have (on average 594.375) internal successors, (4755), 8 states have internal predecessors, (4755), 0 states have call successors, (0), 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 5080
[2023-12-25 22:52:57,851 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 22:52:57,867 INFO  L225             Difference]: With dead ends: 21755
[2023-12-25 22:52:57,867 INFO  L226             Difference]: Without dead ends: 14521
[2023-12-25 22:52:57,875 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5088 GetRequests, 5076 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182
[2023-12-25 22:52:57,875 INFO  L413           NwaCegarLoop]: 12215 mSDtfsCounter, 31926 mSDsluCounter, 58766 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31926 SdHoareTripleChecker+Valid, 70981 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-12-25 22:52:57,875 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [31926 Valid, 70981 Invalid, 52 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-12-25 22:52:57,888 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14521 states.
[2023-12-25 22:52:57,968 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14521 to 7978.
[2023-12-25 22:52:57,975 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7978 states, 7977 states have (on average 1.656011031716184) internal successors, (13210), 7977 states have internal predecessors, (13210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:52:57,983 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7978 states to 7978 states and 13210 transitions.
[2023-12-25 22:52:57,983 INFO  L78                 Accepts]: Start accepts. Automaton has 7978 states and 13210 transitions. Word has length 5080
[2023-12-25 22:52:57,985 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 22:52:57,985 INFO  L495      AbstractCegarLoop]: Abstraction has 7978 states and 13210 transitions.
[2023-12-25 22:52:57,986 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 8 states, 8 states have (on average 594.375) internal successors, (4755), 8 states have internal predecessors, (4755), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:52:57,986 INFO  L276                IsEmpty]: Start isEmpty. Operand 7978 states and 13210 transitions.
[2023-12-25 22:52:58,113 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5082
[2023-12-25 22:52:58,113 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 22:52:58,114 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-12-25 22:52:58,179 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (86)] Ended with exit code 0
[2023-12-25 22:52:58,328 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 86 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable87
[2023-12-25 22:52:58,329 INFO  L420      AbstractCegarLoop]: === Iteration 89 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 22:52:58,329 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 22:52:58,329 INFO  L85        PathProgramCache]: Analyzing trace with hash -1114764126, now seen corresponding path program 1 times
[2023-12-25 22:52:58,330 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 22:52:58,330 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2123947726]
[2023-12-25 22:52:58,330 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:52:58,330 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 22:52:58,809 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 22:52:58,809 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [124364699]
[2023-12-25 22:52:58,810 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:52:58,810 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 22:52:58,811 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 22:52:58,813 INFO  L229       MonitoredProcess]: Starting monitored process 87 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-25 22:52:58,814 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (87)] Waiting until timeout for monitored process
[2023-12-25 22:53:03,779 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 22:53:03,914 INFO  L262         TraceCheckSpWp]: Trace formula consists of 22617 conjuncts, 17 conjunts are in the unsatisfiable core
[2023-12-25 22:53:03,962 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 22:53:04,302 INFO  L134       CoverageAnalysis]: Checked inductivity of 572 backedges. 230 proven. 0 refuted. 0 times theorem prover too weak. 342 trivial. 0 not checked.
[2023-12-25 22:53:04,303 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 22:53:04,303 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 22:53:04,303 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2123947726]
[2023-12-25 22:53:04,303 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 22:53:04,303 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [124364699]
[2023-12-25 22:53:04,303 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [124364699] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 22:53:04,315 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 22:53:04,315 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-12-25 22:53:04,315 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1793339797]
[2023-12-25 22:53:04,315 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 22:53:04,317 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-12-25 22:53:04,317 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 22:53:04,319 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-12-25 22:53:04,319 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-12-25 22:53:04,320 INFO  L87              Difference]: Start difference. First operand 7978 states and 13210 transitions. Second operand  has 7 states, 7 states have (on average 679.1428571428571) internal successors, (4754), 7 states have internal predecessors, (4754), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:53:04,629 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 22:53:04,629 INFO  L93              Difference]: Finished difference Result 21755 states and 36000 transitions.
[2023-12-25 22:53:04,630 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. 
[2023-12-25 22:53:04,631 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 679.1428571428571) internal successors, (4754), 7 states have internal predecessors, (4754), 0 states have call successors, (0), 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 5081
[2023-12-25 22:53:04,634 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 22:53:04,648 INFO  L225             Difference]: With dead ends: 21755
[2023-12-25 22:53:04,649 INFO  L226             Difference]: Without dead ends: 14527
[2023-12-25 22:53:04,657 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5089 GetRequests, 5078 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156
[2023-12-25 22:53:04,657 INFO  L413           NwaCegarLoop]: 12225 mSDtfsCounter, 31922 mSDsluCounter, 48031 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31922 SdHoareTripleChecker+Valid, 60256 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-12-25 22:53:04,657 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [31922 Valid, 60256 Invalid, 47 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-12-25 22:53:04,667 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14527 states.
[2023-12-25 22:53:04,737 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14527 to 7978.
[2023-12-25 22:53:04,744 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7978 states, 7977 states have (on average 1.656011031716184) internal successors, (13210), 7977 states have internal predecessors, (13210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:53:04,752 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7978 states to 7978 states and 13210 transitions.
[2023-12-25 22:53:04,752 INFO  L78                 Accepts]: Start accepts. Automaton has 7978 states and 13210 transitions. Word has length 5081
[2023-12-25 22:53:04,754 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 22:53:04,754 INFO  L495      AbstractCegarLoop]: Abstraction has 7978 states and 13210 transitions.
[2023-12-25 22:53:04,755 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 679.1428571428571) internal successors, (4754), 7 states have internal predecessors, (4754), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:53:04,755 INFO  L276                IsEmpty]: Start isEmpty. Operand 7978 states and 13210 transitions.
[2023-12-25 22:53:04,957 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5083
[2023-12-25 22:53:04,957 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 22:53:04,958 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-12-25 22:53:05,024 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (87)] Forceful destruction successful, exit code 0
[2023-12-25 22:53:05,184 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88,87 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 22:53:05,185 INFO  L420      AbstractCegarLoop]: === Iteration 90 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 22:53:05,185 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 22:53:05,185 INFO  L85        PathProgramCache]: Analyzing trace with hash 82051430, now seen corresponding path program 1 times
[2023-12-25 22:53:05,185 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 22:53:05,185 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [243043726]
[2023-12-25 22:53:05,186 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:53:05,186 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 22:53:05,505 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 22:53:05,506 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1940949079]
[2023-12-25 22:53:05,507 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:53:05,507 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 22:53:05,507 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 22:53:05,508 INFO  L229       MonitoredProcess]: Starting monitored process 88 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-25 22:53:05,512 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (88)] Waiting until timeout for monitored process
[2023-12-25 22:53:10,395 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 22:53:10,537 INFO  L262         TraceCheckSpWp]: Trace formula consists of 22620 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-12-25 22:53:10,803 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 22:53:11,012 INFO  L134       CoverageAnalysis]: Checked inductivity of 572 backedges. 226 proven. 0 refuted. 0 times theorem prover too weak. 346 trivial. 0 not checked.
[2023-12-25 22:53:11,012 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 22:53:11,013 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 22:53:11,013 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [243043726]
[2023-12-25 22:53:11,013 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 22:53:11,013 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1940949079]
[2023-12-25 22:53:11,013 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1940949079] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 22:53:11,013 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 22:53:11,013 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8
[2023-12-25 22:53:11,013 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [26444290]
[2023-12-25 22:53:11,013 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 22:53:11,016 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 8 states
[2023-12-25 22:53:11,016 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 22:53:11,018 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2023-12-25 22:53:11,018 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56
[2023-12-25 22:53:11,018 INFO  L87              Difference]: Start difference. First operand 7978 states and 13210 transitions. Second operand  has 8 states, 8 states have (on average 594.125) internal successors, (4753), 8 states have internal predecessors, (4753), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:53:11,378 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 22:53:11,378 INFO  L93              Difference]: Finished difference Result 21755 states and 36000 transitions.
[2023-12-25 22:53:11,378 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. 
[2023-12-25 22:53:11,379 INFO  L78                 Accepts]: Start accepts. Automaton has  has 8 states, 8 states have (on average 594.125) internal successors, (4753), 8 states have internal predecessors, (4753), 0 states have call successors, (0), 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 5082
[2023-12-25 22:53:11,382 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 22:53:11,395 INFO  L225             Difference]: With dead ends: 21755
[2023-12-25 22:53:11,396 INFO  L226             Difference]: Without dead ends: 14533
[2023-12-25 22:53:11,403 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5090 GetRequests, 5078 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182
[2023-12-25 22:53:11,403 INFO  L413           NwaCegarLoop]: 12235 mSDtfsCounter, 31918 mSDsluCounter, 60287 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31918 SdHoareTripleChecker+Valid, 72522 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-12-25 22:53:11,403 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [31918 Valid, 72522 Invalid, 63 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-12-25 22:53:11,412 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14533 states.
[2023-12-25 22:53:11,478 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14533 to 7978.
[2023-12-25 22:53:11,485 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7978 states, 7977 states have (on average 1.656011031716184) internal successors, (13210), 7977 states have internal predecessors, (13210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:53:11,492 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7978 states to 7978 states and 13210 transitions.
[2023-12-25 22:53:11,492 INFO  L78                 Accepts]: Start accepts. Automaton has 7978 states and 13210 transitions. Word has length 5082
[2023-12-25 22:53:11,495 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 22:53:11,495 INFO  L495      AbstractCegarLoop]: Abstraction has 7978 states and 13210 transitions.
[2023-12-25 22:53:11,496 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 8 states, 8 states have (on average 594.125) internal successors, (4753), 8 states have internal predecessors, (4753), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:53:11,496 INFO  L276                IsEmpty]: Start isEmpty. Operand 7978 states and 13210 transitions.
[2023-12-25 22:53:11,689 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5084
[2023-12-25 22:53:11,690 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 22:53:11,691 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-12-25 22:53:11,756 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (88)] Forceful destruction successful, exit code 0
[2023-12-25 22:53:11,900 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89,88 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 22:53:11,901 INFO  L420      AbstractCegarLoop]: === Iteration 91 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 22:53:11,901 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 22:53:11,901 INFO  L85        PathProgramCache]: Analyzing trace with hash 204384414, now seen corresponding path program 1 times
[2023-12-25 22:53:11,901 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 22:53:11,901 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [613389930]
[2023-12-25 22:53:11,902 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:53:11,902 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 22:53:12,234 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 22:53:12,235 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1658242109]
[2023-12-25 22:53:12,236 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:53:12,236 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 22:53:12,236 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 22:53:12,244 INFO  L229       MonitoredProcess]: Starting monitored process 89 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-25 22:53:12,247 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (89)] Waiting until timeout for monitored process
[2023-12-25 22:53:17,341 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 22:53:17,472 INFO  L262         TraceCheckSpWp]: Trace formula consists of 22623 conjuncts, 17 conjunts are in the unsatisfiable core
[2023-12-25 22:53:17,515 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 22:53:17,715 INFO  L134       CoverageAnalysis]: Checked inductivity of 572 backedges. 222 proven. 0 refuted. 0 times theorem prover too weak. 350 trivial. 0 not checked.
[2023-12-25 22:53:17,715 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 22:53:17,715 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 22:53:17,715 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [613389930]
[2023-12-25 22:53:17,715 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 22:53:17,715 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1658242109]
[2023-12-25 22:53:17,715 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1658242109] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 22:53:17,715 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 22:53:17,716 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-12-25 22:53:17,716 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1261819653]
[2023-12-25 22:53:17,716 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 22:53:17,718 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-12-25 22:53:17,718 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 22:53:17,720 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-12-25 22:53:17,720 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-12-25 22:53:17,720 INFO  L87              Difference]: Start difference. First operand 7978 states and 13210 transitions. Second operand  has 7 states, 7 states have (on average 678.8571428571429) internal successors, (4752), 7 states have internal predecessors, (4752), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:53:18,026 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 22:53:18,026 INFO  L93              Difference]: Finished difference Result 21755 states and 36000 transitions.
[2023-12-25 22:53:18,027 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. 
[2023-12-25 22:53:18,028 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 678.8571428571429) internal successors, (4752), 7 states have internal predecessors, (4752), 0 states have call successors, (0), 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 5083
[2023-12-25 22:53:18,031 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 22:53:18,044 INFO  L225             Difference]: With dead ends: 21755
[2023-12-25 22:53:18,045 INFO  L226             Difference]: Without dead ends: 14539
[2023-12-25 22:53:18,052 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5091 GetRequests, 5080 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156
[2023-12-25 22:53:18,052 INFO  L413           NwaCegarLoop]: 12245 mSDtfsCounter, 31914 mSDsluCounter, 48091 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31914 SdHoareTripleChecker+Valid, 60336 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-12-25 22:53:18,052 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [31914 Valid, 60336 Invalid, 47 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-12-25 22:53:18,060 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14539 states.
[2023-12-25 22:53:18,124 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14539 to 7978.
[2023-12-25 22:53:18,130 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7978 states, 7977 states have (on average 1.656011031716184) internal successors, (13210), 7977 states have internal predecessors, (13210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:53:18,137 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7978 states to 7978 states and 13210 transitions.
[2023-12-25 22:53:18,137 INFO  L78                 Accepts]: Start accepts. Automaton has 7978 states and 13210 transitions. Word has length 5083
[2023-12-25 22:53:18,139 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 22:53:18,139 INFO  L495      AbstractCegarLoop]: Abstraction has 7978 states and 13210 transitions.
[2023-12-25 22:53:18,140 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 678.8571428571429) internal successors, (4752), 7 states have internal predecessors, (4752), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:53:18,140 INFO  L276                IsEmpty]: Start isEmpty. Operand 7978 states and 13210 transitions.
[2023-12-25 22:53:18,331 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5085
[2023-12-25 22:53:18,332 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 22:53:18,333 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-12-25 22:53:18,393 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (89)] Forceful destruction successful, exit code 0
[2023-12-25 22:53:18,536 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90,89 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 22:53:18,536 INFO  L420      AbstractCegarLoop]: === Iteration 92 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 22:53:18,537 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 22:53:18,537 INFO  L85        PathProgramCache]: Analyzing trace with hash -2002947546, now seen corresponding path program 1 times
[2023-12-25 22:53:18,537 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 22:53:18,537 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [838934751]
[2023-12-25 22:53:18,538 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:53:18,538 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 22:53:18,880 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 22:53:18,881 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1508780599]
[2023-12-25 22:53:18,882 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:53:18,882 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 22:53:18,882 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 22:53:18,883 INFO  L229       MonitoredProcess]: Starting monitored process 90 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-25 22:53:18,885 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (90)] Waiting until timeout for monitored process
[2023-12-25 22:53:24,005 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 22:53:24,141 INFO  L262         TraceCheckSpWp]: Trace formula consists of 22626 conjuncts, 21 conjunts are in the unsatisfiable core
[2023-12-25 22:53:24,189 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 22:53:24,365 INFO  L134       CoverageAnalysis]: Checked inductivity of 572 backedges. 218 proven. 0 refuted. 0 times theorem prover too weak. 354 trivial. 0 not checked.
[2023-12-25 22:53:24,366 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 22:53:24,366 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 22:53:24,366 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [838934751]
[2023-12-25 22:53:24,366 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 22:53:24,366 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1508780599]
[2023-12-25 22:53:24,366 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1508780599] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 22:53:24,366 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 22:53:24,366 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8
[2023-12-25 22:53:24,366 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [851416231]
[2023-12-25 22:53:24,366 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 22:53:24,369 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 8 states
[2023-12-25 22:53:24,369 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 22:53:24,370 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2023-12-25 22:53:24,371 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56
[2023-12-25 22:53:24,371 INFO  L87              Difference]: Start difference. First operand 7978 states and 13210 transitions. Second operand  has 8 states, 8 states have (on average 593.875) internal successors, (4751), 8 states have internal predecessors, (4751), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:53:24,718 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 22:53:24,718 INFO  L93              Difference]: Finished difference Result 21755 states and 36000 transitions.
[2023-12-25 22:53:24,718 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. 
[2023-12-25 22:53:24,720 INFO  L78                 Accepts]: Start accepts. Automaton has  has 8 states, 8 states have (on average 593.875) internal successors, (4751), 8 states have internal predecessors, (4751), 0 states have call successors, (0), 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 5084
[2023-12-25 22:53:24,723 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 22:53:24,755 INFO  L225             Difference]: With dead ends: 21755
[2023-12-25 22:53:24,755 INFO  L226             Difference]: Without dead ends: 14545
[2023-12-25 22:53:24,763 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5092 GetRequests, 5080 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182
[2023-12-25 22:53:24,763 INFO  L413           NwaCegarLoop]: 12255 mSDtfsCounter, 31910 mSDsluCounter, 58898 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31910 SdHoareTripleChecker+Valid, 71153 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-12-25 22:53:24,763 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [31910 Valid, 71153 Invalid, 52 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-12-25 22:53:24,772 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14545 states.
[2023-12-25 22:53:24,841 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14545 to 7978.
[2023-12-25 22:53:24,847 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7978 states, 7977 states have (on average 1.656011031716184) internal successors, (13210), 7977 states have internal predecessors, (13210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:53:24,854 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7978 states to 7978 states and 13210 transitions.
[2023-12-25 22:53:24,854 INFO  L78                 Accepts]: Start accepts. Automaton has 7978 states and 13210 transitions. Word has length 5084
[2023-12-25 22:53:24,856 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 22:53:24,856 INFO  L495      AbstractCegarLoop]: Abstraction has 7978 states and 13210 transitions.
[2023-12-25 22:53:24,857 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 8 states, 8 states have (on average 593.875) internal successors, (4751), 8 states have internal predecessors, (4751), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:53:24,857 INFO  L276                IsEmpty]: Start isEmpty. Operand 7978 states and 13210 transitions.
[2023-12-25 22:53:25,054 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5086
[2023-12-25 22:53:25,054 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 22:53:25,055 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-12-25 22:53:25,131 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (90)] Forceful destruction successful, exit code 0
[2023-12-25 22:53:25,280 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 90 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable91
[2023-12-25 22:53:25,280 INFO  L420      AbstractCegarLoop]: === Iteration 93 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 22:53:25,281 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 22:53:25,281 INFO  L85        PathProgramCache]: Analyzing trace with hash -1208694758, now seen corresponding path program 1 times
[2023-12-25 22:53:25,281 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 22:53:25,281 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [57582567]
[2023-12-25 22:53:25,282 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:53:25,282 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 22:53:25,597 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 22:53:25,598 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [243509392]
[2023-12-25 22:53:25,599 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:53:25,599 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 22:53:25,599 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 22:53:25,600 INFO  L229       MonitoredProcess]: Starting monitored process 91 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-25 22:53:25,602 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (91)] Waiting until timeout for monitored process
[2023-12-25 22:53:30,567 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 22:53:30,707 INFO  L262         TraceCheckSpWp]: Trace formula consists of 22629 conjuncts, 17 conjunts are in the unsatisfiable core
[2023-12-25 22:53:30,757 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 22:53:31,107 INFO  L134       CoverageAnalysis]: Checked inductivity of 572 backedges. 214 proven. 0 refuted. 0 times theorem prover too weak. 358 trivial. 0 not checked.
[2023-12-25 22:53:31,108 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 22:53:31,108 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 22:53:31,108 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [57582567]
[2023-12-25 22:53:31,108 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 22:53:31,108 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [243509392]
[2023-12-25 22:53:31,108 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [243509392] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 22:53:31,108 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 22:53:31,108 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-12-25 22:53:31,109 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [127025871]
[2023-12-25 22:53:31,109 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 22:53:31,111 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-12-25 22:53:31,111 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 22:53:31,112 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-12-25 22:53:31,113 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-12-25 22:53:31,113 INFO  L87              Difference]: Start difference. First operand 7978 states and 13210 transitions. Second operand  has 7 states, 7 states have (on average 678.5714285714286) internal successors, (4750), 7 states have internal predecessors, (4750), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:53:31,430 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 22:53:31,430 INFO  L93              Difference]: Finished difference Result 21755 states and 36000 transitions.
[2023-12-25 22:53:31,430 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. 
[2023-12-25 22:53:31,431 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 678.5714285714286) internal successors, (4750), 7 states have internal predecessors, (4750), 0 states have call successors, (0), 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 5085
[2023-12-25 22:53:31,434 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 22:53:31,447 INFO  L225             Difference]: With dead ends: 21755
[2023-12-25 22:53:31,447 INFO  L226             Difference]: Without dead ends: 14551
[2023-12-25 22:53:31,454 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5093 GetRequests, 5082 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156
[2023-12-25 22:53:31,455 INFO  L413           NwaCegarLoop]: 12265 mSDtfsCounter, 31906 mSDsluCounter, 48151 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31906 SdHoareTripleChecker+Valid, 60416 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-12-25 22:53:31,455 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [31906 Valid, 60416 Invalid, 47 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-12-25 22:53:31,463 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14551 states.
[2023-12-25 22:53:31,531 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14551 to 7978.
[2023-12-25 22:53:31,537 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7978 states, 7977 states have (on average 1.656011031716184) internal successors, (13210), 7977 states have internal predecessors, (13210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:53:31,544 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7978 states to 7978 states and 13210 transitions.
[2023-12-25 22:53:31,544 INFO  L78                 Accepts]: Start accepts. Automaton has 7978 states and 13210 transitions. Word has length 5085
[2023-12-25 22:53:31,546 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 22:53:31,546 INFO  L495      AbstractCegarLoop]: Abstraction has 7978 states and 13210 transitions.
[2023-12-25 22:53:31,547 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 678.5714285714286) internal successors, (4750), 7 states have internal predecessors, (4750), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:53:31,547 INFO  L276                IsEmpty]: Start isEmpty. Operand 7978 states and 13210 transitions.
[2023-12-25 22:53:31,672 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5087
[2023-12-25 22:53:31,672 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 22:53:31,673 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-12-25 22:53:31,734 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (91)] Forceful destruction successful, exit code 0
[2023-12-25 22:53:31,896 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92,91 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 22:53:31,897 INFO  L420      AbstractCegarLoop]: === Iteration 94 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 22:53:31,897 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 22:53:31,897 INFO  L85        PathProgramCache]: Analyzing trace with hash 1450830438, now seen corresponding path program 1 times
[2023-12-25 22:53:31,897 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 22:53:31,897 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1829266484]
[2023-12-25 22:53:31,898 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:53:31,898 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 22:53:32,199 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 22:53:32,200 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [263437478]
[2023-12-25 22:53:32,201 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:53:32,201 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 22:53:32,201 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 22:53:32,202 INFO  L229       MonitoredProcess]: Starting monitored process 92 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-25 22:53:32,216 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (92)] Waiting until timeout for monitored process
[2023-12-25 22:53:37,281 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 22:53:37,426 INFO  L262         TraceCheckSpWp]: Trace formula consists of 22632 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-12-25 22:53:37,483 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 22:53:37,690 INFO  L134       CoverageAnalysis]: Checked inductivity of 572 backedges. 210 proven. 0 refuted. 0 times theorem prover too weak. 362 trivial. 0 not checked.
[2023-12-25 22:53:37,690 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 22:53:37,690 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 22:53:37,690 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1829266484]
[2023-12-25 22:53:37,690 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 22:53:37,690 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [263437478]
[2023-12-25 22:53:37,690 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [263437478] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 22:53:37,690 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 22:53:37,690 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8
[2023-12-25 22:53:37,691 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [774334198]
[2023-12-25 22:53:37,691 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 22:53:37,693 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 8 states
[2023-12-25 22:53:37,693 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 22:53:37,695 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2023-12-25 22:53:37,695 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56
[2023-12-25 22:53:37,695 INFO  L87              Difference]: Start difference. First operand 7978 states and 13210 transitions. Second operand  has 8 states, 8 states have (on average 593.625) internal successors, (4749), 8 states have internal predecessors, (4749), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:53:38,139 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 22:53:38,139 INFO  L93              Difference]: Finished difference Result 21755 states and 36000 transitions.
[2023-12-25 22:53:38,139 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. 
[2023-12-25 22:53:38,140 INFO  L78                 Accepts]: Start accepts. Automaton has  has 8 states, 8 states have (on average 593.625) internal successors, (4749), 8 states have internal predecessors, (4749), 0 states have call successors, (0), 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 5086
[2023-12-25 22:53:38,143 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 22:53:38,156 INFO  L225             Difference]: With dead ends: 21755
[2023-12-25 22:53:38,156 INFO  L226             Difference]: Without dead ends: 14557
[2023-12-25 22:53:38,163 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5094 GetRequests, 5082 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182
[2023-12-25 22:53:38,164 INFO  L413           NwaCegarLoop]: 12275 mSDtfsCounter, 31902 mSDsluCounter, 58964 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31902 SdHoareTripleChecker+Valid, 71239 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-12-25 22:53:38,164 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [31902 Valid, 71239 Invalid, 52 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [1 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-12-25 22:53:38,173 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14557 states.
[2023-12-25 22:53:38,245 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14557 to 7978.
[2023-12-25 22:53:38,252 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7978 states, 7977 states have (on average 1.656011031716184) internal successors, (13210), 7977 states have internal predecessors, (13210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:53:38,260 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7978 states to 7978 states and 13210 transitions.
[2023-12-25 22:53:38,260 INFO  L78                 Accepts]: Start accepts. Automaton has 7978 states and 13210 transitions. Word has length 5086
[2023-12-25 22:53:38,262 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 22:53:38,262 INFO  L495      AbstractCegarLoop]: Abstraction has 7978 states and 13210 transitions.
[2023-12-25 22:53:38,263 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 8 states, 8 states have (on average 593.625) internal successors, (4749), 8 states have internal predecessors, (4749), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:53:38,263 INFO  L276                IsEmpty]: Start isEmpty. Operand 7978 states and 13210 transitions.
[2023-12-25 22:53:38,389 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5088
[2023-12-25 22:53:38,390 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 22:53:38,391 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-12-25 22:53:38,466 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (92)] Forceful destruction successful, exit code 0
[2023-12-25 22:53:38,600 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93,92 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 22:53:38,601 INFO  L420      AbstractCegarLoop]: === Iteration 95 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 22:53:38,601 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 22:53:38,601 INFO  L85        PathProgramCache]: Analyzing trace with hash -634737898, now seen corresponding path program 1 times
[2023-12-25 22:53:38,601 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 22:53:38,601 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1500187223]
[2023-12-25 22:53:38,602 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:53:38,602 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 22:53:38,919 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 22:53:38,919 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [863037451]
[2023-12-25 22:53:38,920 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:53:38,920 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 22:53:38,920 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 22:53:38,921 INFO  L229       MonitoredProcess]: Starting monitored process 93 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-25 22:53:38,923 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (93)] Waiting until timeout for monitored process
[2023-12-25 22:53:44,089 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 22:53:44,222 INFO  L262         TraceCheckSpWp]: Trace formula consists of 22635 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-12-25 22:53:44,270 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 22:53:44,470 INFO  L134       CoverageAnalysis]: Checked inductivity of 572 backedges. 204 proven. 0 refuted. 0 times theorem prover too weak. 368 trivial. 0 not checked.
[2023-12-25 22:53:44,470 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 22:53:44,470 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 22:53:44,471 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1500187223]
[2023-12-25 22:53:44,471 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 22:53:44,471 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [863037451]
[2023-12-25 22:53:44,471 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [863037451] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 22:53:44,471 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 22:53:44,471 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8
[2023-12-25 22:53:44,471 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [866178944]
[2023-12-25 22:53:44,471 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 22:53:44,473 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 8 states
[2023-12-25 22:53:44,474 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 22:53:44,475 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2023-12-25 22:53:44,475 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56
[2023-12-25 22:53:44,476 INFO  L87              Difference]: Start difference. First operand 7978 states and 13210 transitions. Second operand  has 8 states, 8 states have (on average 593.375) internal successors, (4747), 8 states have internal predecessors, (4747), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:53:44,832 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 22:53:44,832 INFO  L93              Difference]: Finished difference Result 21755 states and 36000 transitions.
[2023-12-25 22:53:44,832 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. 
[2023-12-25 22:53:44,833 INFO  L78                 Accepts]: Start accepts. Automaton has  has 8 states, 8 states have (on average 593.375) internal successors, (4747), 8 states have internal predecessors, (4747), 0 states have call successors, (0), 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 5087
[2023-12-25 22:53:44,836 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 22:53:44,849 INFO  L225             Difference]: With dead ends: 21755
[2023-12-25 22:53:44,849 INFO  L226             Difference]: Without dead ends: 14566
[2023-12-25 22:53:44,858 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5095 GetRequests, 5083 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182
[2023-12-25 22:53:44,858 INFO  L413           NwaCegarLoop]: 12290 mSDtfsCounter, 31899 mSDsluCounter, 59015 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31899 SdHoareTripleChecker+Valid, 71305 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-12-25 22:53:44,858 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [31899 Valid, 71305 Invalid, 52 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-12-25 22:53:44,868 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14566 states.
[2023-12-25 22:53:44,938 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14566 to 7978.
[2023-12-25 22:53:44,944 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7978 states, 7977 states have (on average 1.656011031716184) internal successors, (13210), 7977 states have internal predecessors, (13210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:53:44,950 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7978 states to 7978 states and 13210 transitions.
[2023-12-25 22:53:44,951 INFO  L78                 Accepts]: Start accepts. Automaton has 7978 states and 13210 transitions. Word has length 5087
[2023-12-25 22:53:44,953 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 22:53:44,953 INFO  L495      AbstractCegarLoop]: Abstraction has 7978 states and 13210 transitions.
[2023-12-25 22:53:44,954 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 8 states, 8 states have (on average 593.375) internal successors, (4747), 8 states have internal predecessors, (4747), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:53:44,954 INFO  L276                IsEmpty]: Start isEmpty. Operand 7978 states and 13210 transitions.
[2023-12-25 22:53:45,156 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5089
[2023-12-25 22:53:45,157 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 22:53:45,158 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-12-25 22:53:45,223 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (93)] Ended with exit code 0
[2023-12-25 22:53:45,360 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94,93 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 22:53:45,361 INFO  L420      AbstractCegarLoop]: === Iteration 96 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 22:53:45,361 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 22:53:45,361 INFO  L85        PathProgramCache]: Analyzing trace with hash 1305736462, now seen corresponding path program 1 times
[2023-12-25 22:53:45,361 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 22:53:45,361 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [370243282]
[2023-12-25 22:53:45,362 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:53:45,362 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 22:53:45,656 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 22:53:45,656 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1091650812]
[2023-12-25 22:53:45,657 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:53:45,657 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 22:53:45,657 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 22:53:45,658 INFO  L229       MonitoredProcess]: Starting monitored process 94 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-25 22:53:45,660 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (94)] Waiting until timeout for monitored process
[2023-12-25 22:53:50,325 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 22:53:50,470 INFO  L262         TraceCheckSpWp]: Trace formula consists of 22639 conjuncts, 21 conjunts are in the unsatisfiable core
[2023-12-25 22:53:50,519 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 22:53:50,730 INFO  L134       CoverageAnalysis]: Checked inductivity of 572 backedges. 200 proven. 0 refuted. 0 times theorem prover too weak. 372 trivial. 0 not checked.
[2023-12-25 22:53:50,730 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 22:53:50,730 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 22:53:50,730 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [370243282]
[2023-12-25 22:53:50,730 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 22:53:50,730 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1091650812]
[2023-12-25 22:53:50,730 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1091650812] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 22:53:50,730 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 22:53:50,731 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8
[2023-12-25 22:53:50,731 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [480270631]
[2023-12-25 22:53:50,731 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 22:53:50,733 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 8 states
[2023-12-25 22:53:50,733 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 22:53:50,735 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2023-12-25 22:53:50,735 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56
[2023-12-25 22:53:50,735 INFO  L87              Difference]: Start difference. First operand 7978 states and 13210 transitions. Second operand  has 8 states, 8 states have (on average 593.25) internal successors, (4746), 8 states have internal predecessors, (4746), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:53:51,215 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 22:53:51,215 INFO  L93              Difference]: Finished difference Result 21755 states and 36000 transitions.
[2023-12-25 22:53:51,215 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. 
[2023-12-25 22:53:51,216 INFO  L78                 Accepts]: Start accepts. Automaton has  has 8 states, 8 states have (on average 593.25) internal successors, (4746), 8 states have internal predecessors, (4746), 0 states have call successors, (0), 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 5088
[2023-12-25 22:53:51,219 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 22:53:51,231 INFO  L225             Difference]: With dead ends: 21755
[2023-12-25 22:53:51,231 INFO  L226             Difference]: Without dead ends: 14572
[2023-12-25 22:53:51,238 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5096 GetRequests, 5084 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182
[2023-12-25 22:53:51,238 INFO  L413           NwaCegarLoop]: 12300 mSDtfsCounter, 31895 mSDsluCounter, 59048 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31895 SdHoareTripleChecker+Valid, 71348 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-12-25 22:53:51,238 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [31895 Valid, 71348 Invalid, 52 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-12-25 22:53:51,247 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14572 states.
[2023-12-25 22:53:51,314 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14572 to 7978.
[2023-12-25 22:53:51,320 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7978 states, 7977 states have (on average 1.656011031716184) internal successors, (13210), 7977 states have internal predecessors, (13210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:53:51,326 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7978 states to 7978 states and 13210 transitions.
[2023-12-25 22:53:51,326 INFO  L78                 Accepts]: Start accepts. Automaton has 7978 states and 13210 transitions. Word has length 5088
[2023-12-25 22:53:51,328 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 22:53:51,328 INFO  L495      AbstractCegarLoop]: Abstraction has 7978 states and 13210 transitions.
[2023-12-25 22:53:51,329 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 8 states, 8 states have (on average 593.25) internal successors, (4746), 8 states have internal predecessors, (4746), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:53:51,329 INFO  L276                IsEmpty]: Start isEmpty. Operand 7978 states and 13210 transitions.
[2023-12-25 22:53:51,453 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5090
[2023-12-25 22:53:51,454 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 22:53:51,455 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-12-25 22:53:51,521 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (94)] Forceful destruction successful, exit code 0
[2023-12-25 22:53:51,672 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95,94 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 22:53:51,672 INFO  L420      AbstractCegarLoop]: === Iteration 97 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 22:53:51,673 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 22:53:51,673 INFO  L85        PathProgramCache]: Analyzing trace with hash 227722964, now seen corresponding path program 1 times
[2023-12-25 22:53:51,674 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 22:53:51,674 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [786254579]
[2023-12-25 22:53:51,674 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:53:51,674 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 22:53:52,070 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 22:53:52,070 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2112590759]
[2023-12-25 22:53:52,071 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:53:52,071 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 22:53:52,071 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 22:53:52,074 INFO  L229       MonitoredProcess]: Starting monitored process 95 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-25 22:53:52,075 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (95)] Waiting until timeout for monitored process
[2023-12-25 22:53:57,043 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 22:53:57,188 INFO  L262         TraceCheckSpWp]: Trace formula consists of 22642 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-12-25 22:53:57,235 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 22:53:57,444 INFO  L134       CoverageAnalysis]: Checked inductivity of 572 backedges. 196 proven. 0 refuted. 0 times theorem prover too weak. 376 trivial. 0 not checked.
[2023-12-25 22:53:57,444 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 22:53:57,445 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 22:53:57,445 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [786254579]
[2023-12-25 22:53:57,445 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 22:53:57,445 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2112590759]
[2023-12-25 22:53:57,445 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [2112590759] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 22:53:57,445 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 22:53:57,445 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8
[2023-12-25 22:53:57,445 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1389994892]
[2023-12-25 22:53:57,445 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 22:53:57,448 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 8 states
[2023-12-25 22:53:57,448 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 22:53:57,449 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2023-12-25 22:53:57,449 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56
[2023-12-25 22:53:57,450 INFO  L87              Difference]: Start difference. First operand 7978 states and 13210 transitions. Second operand  has 8 states, 8 states have (on average 593.125) internal successors, (4745), 8 states have internal predecessors, (4745), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:53:57,792 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 22:53:57,792 INFO  L93              Difference]: Finished difference Result 21755 states and 36000 transitions.
[2023-12-25 22:53:57,792 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. 
[2023-12-25 22:53:57,794 INFO  L78                 Accepts]: Start accepts. Automaton has  has 8 states, 8 states have (on average 593.125) internal successors, (4745), 8 states have internal predecessors, (4745), 0 states have call successors, (0), 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 5089
[2023-12-25 22:53:57,797 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 22:53:57,809 INFO  L225             Difference]: With dead ends: 21755
[2023-12-25 22:53:57,809 INFO  L226             Difference]: Without dead ends: 14578
[2023-12-25 22:53:57,817 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5097 GetRequests, 5085 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182
[2023-12-25 22:53:57,817 INFO  L413           NwaCegarLoop]: 12310 mSDtfsCounter, 31891 mSDsluCounter, 59081 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31891 SdHoareTripleChecker+Valid, 71391 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-12-25 22:53:57,817 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [31891 Valid, 71391 Invalid, 52 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-12-25 22:53:57,827 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14578 states.
[2023-12-25 22:53:57,898 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14578 to 7978.
[2023-12-25 22:53:57,904 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7978 states, 7977 states have (on average 1.656011031716184) internal successors, (13210), 7977 states have internal predecessors, (13210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:53:57,911 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7978 states to 7978 states and 13210 transitions.
[2023-12-25 22:53:57,911 INFO  L78                 Accepts]: Start accepts. Automaton has 7978 states and 13210 transitions. Word has length 5089
[2023-12-25 22:53:57,914 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 22:53:57,914 INFO  L495      AbstractCegarLoop]: Abstraction has 7978 states and 13210 transitions.
[2023-12-25 22:53:57,915 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 8 states, 8 states have (on average 593.125) internal successors, (4745), 8 states have internal predecessors, (4745), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:53:57,915 INFO  L276                IsEmpty]: Start isEmpty. Operand 7978 states and 13210 transitions.
[2023-12-25 22:53:58,129 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5091
[2023-12-25 22:53:58,129 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 22:53:58,130 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-12-25 22:53:58,201 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (95)] Forceful destruction successful, exit code 0
[2023-12-25 22:53:58,356 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 95 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable96
[2023-12-25 22:53:58,356 INFO  L420      AbstractCegarLoop]: === Iteration 98 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 22:53:58,357 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 22:53:58,357 INFO  L85        PathProgramCache]: Analyzing trace with hash 1732653968, now seen corresponding path program 1 times
[2023-12-25 22:53:58,357 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 22:53:58,357 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2009688125]
[2023-12-25 22:53:58,358 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:53:58,358 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 22:53:58,682 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 22:53:58,682 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1316627286]
[2023-12-25 22:53:58,683 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:53:58,683 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 22:53:58,683 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 22:53:58,684 INFO  L229       MonitoredProcess]: Starting monitored process 96 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-25 22:53:58,685 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (96)] Waiting until timeout for monitored process
[2023-12-25 22:54:03,652 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 22:54:03,795 INFO  L262         TraceCheckSpWp]: Trace formula consists of 22646 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-12-25 22:54:03,848 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 22:54:04,024 INFO  L134       CoverageAnalysis]: Checked inductivity of 572 backedges. 192 proven. 0 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked.
[2023-12-25 22:54:04,025 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 22:54:04,025 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 22:54:04,025 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2009688125]
[2023-12-25 22:54:04,025 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 22:54:04,025 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1316627286]
[2023-12-25 22:54:04,025 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1316627286] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 22:54:04,025 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 22:54:04,025 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8
[2023-12-25 22:54:04,025 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [219988393]
[2023-12-25 22:54:04,025 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 22:54:04,028 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 8 states
[2023-12-25 22:54:04,028 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 22:54:04,029 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2023-12-25 22:54:04,030 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56
[2023-12-25 22:54:04,030 INFO  L87              Difference]: Start difference. First operand 7978 states and 13210 transitions. Second operand  has 8 states, 8 states have (on average 593.0) internal successors, (4744), 8 states have internal predecessors, (4744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:54:04,398 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 22:54:04,398 INFO  L93              Difference]: Finished difference Result 21755 states and 36000 transitions.
[2023-12-25 22:54:04,399 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. 
[2023-12-25 22:54:04,400 INFO  L78                 Accepts]: Start accepts. Automaton has  has 8 states, 8 states have (on average 593.0) internal successors, (4744), 8 states have internal predecessors, (4744), 0 states have call successors, (0), 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 5090
[2023-12-25 22:54:04,402 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 22:54:04,414 INFO  L225             Difference]: With dead ends: 21755
[2023-12-25 22:54:04,414 INFO  L226             Difference]: Without dead ends: 14584
[2023-12-25 22:54:04,421 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5098 GetRequests, 5086 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182
[2023-12-25 22:54:04,421 INFO  L413           NwaCegarLoop]: 12320 mSDtfsCounter, 31887 mSDsluCounter, 60627 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31887 SdHoareTripleChecker+Valid, 72947 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-12-25 22:54:04,421 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [31887 Valid, 72947 Invalid, 63 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-12-25 22:54:04,429 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14584 states.
[2023-12-25 22:54:04,497 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14584 to 7978.
[2023-12-25 22:54:04,503 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7978 states, 7977 states have (on average 1.656011031716184) internal successors, (13210), 7977 states have internal predecessors, (13210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:54:04,510 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7978 states to 7978 states and 13210 transitions.
[2023-12-25 22:54:04,510 INFO  L78                 Accepts]: Start accepts. Automaton has 7978 states and 13210 transitions. Word has length 5090
[2023-12-25 22:54:04,512 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 22:54:04,513 INFO  L495      AbstractCegarLoop]: Abstraction has 7978 states and 13210 transitions.
[2023-12-25 22:54:04,513 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 8 states, 8 states have (on average 593.0) internal successors, (4744), 8 states have internal predecessors, (4744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:54:04,514 INFO  L276                IsEmpty]: Start isEmpty. Operand 7978 states and 13210 transitions.
[2023-12-25 22:54:04,641 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5092
[2023-12-25 22:54:04,642 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 22:54:04,643 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-12-25 22:54:04,719 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (96)] Ended with exit code 0
[2023-12-25 22:54:04,868 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 96 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable97
[2023-12-25 22:54:04,869 INFO  L420      AbstractCegarLoop]: === Iteration 99 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 22:54:04,869 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 22:54:04,869 INFO  L85        PathProgramCache]: Analyzing trace with hash 1388998802, now seen corresponding path program 1 times
[2023-12-25 22:54:04,869 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 22:54:04,869 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [820125116]
[2023-12-25 22:54:04,870 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:54:04,870 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 22:54:05,274 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 22:54:05,274 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2018126697]
[2023-12-25 22:54:05,275 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:54:05,275 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 22:54:05,276 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 22:54:05,278 INFO  L229       MonitoredProcess]: Starting monitored process 97 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-25 22:54:05,279 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (97)] Waiting until timeout for monitored process
[2023-12-25 22:54:10,210 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 22:54:10,355 INFO  L262         TraceCheckSpWp]: Trace formula consists of 22649 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-12-25 22:54:10,405 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 22:54:10,581 INFO  L134       CoverageAnalysis]: Checked inductivity of 572 backedges. 188 proven. 0 refuted. 0 times theorem prover too weak. 384 trivial. 0 not checked.
[2023-12-25 22:54:10,581 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 22:54:10,581 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 22:54:10,581 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [820125116]
[2023-12-25 22:54:10,581 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 22:54:10,581 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2018126697]
[2023-12-25 22:54:10,581 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [2018126697] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 22:54:10,581 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 22:54:10,582 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8
[2023-12-25 22:54:10,582 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1014439616]
[2023-12-25 22:54:10,582 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 22:54:10,584 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 8 states
[2023-12-25 22:54:10,584 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 22:54:10,586 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2023-12-25 22:54:10,586 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56
[2023-12-25 22:54:10,586 INFO  L87              Difference]: Start difference. First operand 7978 states and 13210 transitions. Second operand  has 8 states, 8 states have (on average 592.875) internal successors, (4743), 8 states have internal predecessors, (4743), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:54:10,959 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 22:54:10,959 INFO  L93              Difference]: Finished difference Result 21755 states and 36000 transitions.
[2023-12-25 22:54:10,959 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. 
[2023-12-25 22:54:10,961 INFO  L78                 Accepts]: Start accepts. Automaton has  has 8 states, 8 states have (on average 592.875) internal successors, (4743), 8 states have internal predecessors, (4743), 0 states have call successors, (0), 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 5091
[2023-12-25 22:54:10,964 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 22:54:10,988 INFO  L225             Difference]: With dead ends: 21755
[2023-12-25 22:54:10,988 INFO  L226             Difference]: Without dead ends: 14590
[2023-12-25 22:54:10,996 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5099 GetRequests, 5087 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182
[2023-12-25 22:54:10,998 INFO  L413           NwaCegarLoop]: 12330 mSDtfsCounter, 31883 mSDsluCounter, 60667 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31883 SdHoareTripleChecker+Valid, 72997 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-12-25 22:54:10,998 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [31883 Valid, 72997 Invalid, 63 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-12-25 22:54:11,008 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14590 states.
[2023-12-25 22:54:11,080 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14590 to 7978.
[2023-12-25 22:54:11,086 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7978 states, 7977 states have (on average 1.656011031716184) internal successors, (13210), 7977 states have internal predecessors, (13210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:54:11,093 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7978 states to 7978 states and 13210 transitions.
[2023-12-25 22:54:11,094 INFO  L78                 Accepts]: Start accepts. Automaton has 7978 states and 13210 transitions. Word has length 5091
[2023-12-25 22:54:11,096 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 22:54:11,096 INFO  L495      AbstractCegarLoop]: Abstraction has 7978 states and 13210 transitions.
[2023-12-25 22:54:11,097 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 8 states, 8 states have (on average 592.875) internal successors, (4743), 8 states have internal predecessors, (4743), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:54:11,097 INFO  L276                IsEmpty]: Start isEmpty. Operand 7978 states and 13210 transitions.
[2023-12-25 22:54:11,224 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5093
[2023-12-25 22:54:11,225 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 22:54:11,226 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-12-25 22:54:11,292 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (97)] Forceful destruction successful, exit code 0
[2023-12-25 22:54:11,427 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98,97 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 22:54:11,428 INFO  L420      AbstractCegarLoop]: === Iteration 100 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 22:54:11,428 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 22:54:11,429 INFO  L85        PathProgramCache]: Analyzing trace with hash 723239954, now seen corresponding path program 1 times
[2023-12-25 22:54:11,429 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 22:54:11,429 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1573870252]
[2023-12-25 22:54:11,429 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:54:11,429 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 22:54:11,819 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 22:54:11,819 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [43113683]
[2023-12-25 22:54:11,820 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:54:11,820 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 22:54:11,820 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 22:54:11,821 INFO  L229       MonitoredProcess]: Starting monitored process 98 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-25 22:54:11,823 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (98)] Waiting until timeout for monitored process
[2023-12-25 22:54:16,722 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 22:54:16,873 INFO  L262         TraceCheckSpWp]: Trace formula consists of 22653 conjuncts, 17 conjunts are in the unsatisfiable core
[2023-12-25 22:54:16,923 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 22:54:17,122 INFO  L134       CoverageAnalysis]: Checked inductivity of 572 backedges. 184 proven. 0 refuted. 0 times theorem prover too weak. 388 trivial. 0 not checked.
[2023-12-25 22:54:17,122 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 22:54:17,122 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 22:54:17,123 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1573870252]
[2023-12-25 22:54:17,123 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 22:54:17,123 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [43113683]
[2023-12-25 22:54:17,123 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [43113683] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 22:54:17,123 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 22:54:17,123 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-12-25 22:54:17,123 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [491092680]
[2023-12-25 22:54:17,123 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 22:54:17,125 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-12-25 22:54:17,125 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 22:54:17,127 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-12-25 22:54:17,127 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-12-25 22:54:17,127 INFO  L87              Difference]: Start difference. First operand 7978 states and 13210 transitions. Second operand  has 7 states, 7 states have (on average 677.4285714285714) internal successors, (4742), 7 states have internal predecessors, (4742), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:54:17,437 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 22:54:17,437 INFO  L93              Difference]: Finished difference Result 21755 states and 36000 transitions.
[2023-12-25 22:54:17,437 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. 
[2023-12-25 22:54:17,438 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 677.4285714285714) internal successors, (4742), 7 states have internal predecessors, (4742), 0 states have call successors, (0), 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 5092
[2023-12-25 22:54:17,441 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 22:54:17,457 INFO  L225             Difference]: With dead ends: 21755
[2023-12-25 22:54:17,457 INFO  L226             Difference]: Without dead ends: 14596
[2023-12-25 22:54:17,465 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5100 GetRequests, 5089 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156
[2023-12-25 22:54:17,465 INFO  L413           NwaCegarLoop]: 12340 mSDtfsCounter, 31879 mSDsluCounter, 48376 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31879 SdHoareTripleChecker+Valid, 60716 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-12-25 22:54:17,465 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [31879 Valid, 60716 Invalid, 47 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-12-25 22:54:17,473 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14596 states.
[2023-12-25 22:54:17,536 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14596 to 7978.
[2023-12-25 22:54:17,541 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7978 states, 7977 states have (on average 1.656011031716184) internal successors, (13210), 7977 states have internal predecessors, (13210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:54:17,547 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7978 states to 7978 states and 13210 transitions.
[2023-12-25 22:54:17,548 INFO  L78                 Accepts]: Start accepts. Automaton has 7978 states and 13210 transitions. Word has length 5092
[2023-12-25 22:54:17,550 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 22:54:17,550 INFO  L495      AbstractCegarLoop]: Abstraction has 7978 states and 13210 transitions.
[2023-12-25 22:54:17,550 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 677.4285714285714) internal successors, (4742), 7 states have internal predecessors, (4742), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:54:17,551 INFO  L276                IsEmpty]: Start isEmpty. Operand 7978 states and 13210 transitions.
[2023-12-25 22:54:17,676 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5094
[2023-12-25 22:54:17,676 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 22:54:17,677 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-12-25 22:54:17,740 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (98)] Ended with exit code 0
[2023-12-25 22:54:17,892 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99,98 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 22:54:17,893 INFO  L420      AbstractCegarLoop]: === Iteration 101 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 22:54:17,893 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 22:54:17,893 INFO  L85        PathProgramCache]: Analyzing trace with hash -783873968, now seen corresponding path program 1 times
[2023-12-25 22:54:17,893 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 22:54:17,893 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [60082972]
[2023-12-25 22:54:17,894 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:54:17,894 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 22:54:18,194 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 22:54:18,194 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [714737667]
[2023-12-25 22:54:18,195 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:54:18,195 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 22:54:18,195 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 22:54:18,196 INFO  L229       MonitoredProcess]: Starting monitored process 99 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-25 22:54:18,197 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (99)] Waiting until timeout for monitored process
[2023-12-25 22:54:23,449 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 22:54:23,606 INFO  L262         TraceCheckSpWp]: Trace formula consists of 22656 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-12-25 22:54:23,653 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 22:54:23,867 INFO  L134       CoverageAnalysis]: Checked inductivity of 572 backedges. 180 proven. 0 refuted. 0 times theorem prover too weak. 392 trivial. 0 not checked.
[2023-12-25 22:54:23,867 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 22:54:23,868 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 22:54:23,868 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [60082972]
[2023-12-25 22:54:23,868 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 22:54:23,868 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [714737667]
[2023-12-25 22:54:23,868 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [714737667] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 22:54:23,868 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 22:54:23,868 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8
[2023-12-25 22:54:23,868 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2137319319]
[2023-12-25 22:54:23,868 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 22:54:23,870 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 8 states
[2023-12-25 22:54:23,871 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 22:54:23,872 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2023-12-25 22:54:23,872 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56
[2023-12-25 22:54:23,873 INFO  L87              Difference]: Start difference. First operand 7978 states and 13210 transitions. Second operand  has 8 states, 8 states have (on average 592.625) internal successors, (4741), 8 states have internal predecessors, (4741), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:54:24,238 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 22:54:24,238 INFO  L93              Difference]: Finished difference Result 21755 states and 36000 transitions.
[2023-12-25 22:54:24,238 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. 
[2023-12-25 22:54:24,239 INFO  L78                 Accepts]: Start accepts. Automaton has  has 8 states, 8 states have (on average 592.625) internal successors, (4741), 8 states have internal predecessors, (4741), 0 states have call successors, (0), 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 5093
[2023-12-25 22:54:24,242 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 22:54:24,257 INFO  L225             Difference]: With dead ends: 21755
[2023-12-25 22:54:24,257 INFO  L226             Difference]: Without dead ends: 14602
[2023-12-25 22:54:24,265 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5101 GetRequests, 5089 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182
[2023-12-25 22:54:24,265 INFO  L413           NwaCegarLoop]: 12350 mSDtfsCounter, 31875 mSDsluCounter, 59213 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31875 SdHoareTripleChecker+Valid, 71563 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-12-25 22:54:24,265 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [31875 Valid, 71563 Invalid, 52 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-12-25 22:54:24,273 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14602 states.
[2023-12-25 22:54:24,340 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14602 to 7978.
[2023-12-25 22:54:24,347 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7978 states, 7977 states have (on average 1.656011031716184) internal successors, (13210), 7977 states have internal predecessors, (13210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:54:24,353 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7978 states to 7978 states and 13210 transitions.
[2023-12-25 22:54:24,353 INFO  L78                 Accepts]: Start accepts. Automaton has 7978 states and 13210 transitions. Word has length 5093
[2023-12-25 22:54:24,356 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 22:54:24,356 INFO  L495      AbstractCegarLoop]: Abstraction has 7978 states and 13210 transitions.
[2023-12-25 22:54:24,357 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 8 states, 8 states have (on average 592.625) internal successors, (4741), 8 states have internal predecessors, (4741), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:54:24,357 INFO  L276                IsEmpty]: Start isEmpty. Operand 7978 states and 13210 transitions.
[2023-12-25 22:54:24,482 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5095
[2023-12-25 22:54:24,483 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 22:54:24,484 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-12-25 22:54:24,548 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (99)] Ended with exit code 0
[2023-12-25 22:54:24,700 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 99 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable100
[2023-12-25 22:54:24,700 INFO  L420      AbstractCegarLoop]: === Iteration 102 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 22:54:24,701 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 22:54:24,701 INFO  L85        PathProgramCache]: Analyzing trace with hash -378321260, now seen corresponding path program 1 times
[2023-12-25 22:54:24,701 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 22:54:24,701 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [757108921]
[2023-12-25 22:54:24,702 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:54:24,702 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 22:54:25,109 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 22:54:25,110 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [786086238]
[2023-12-25 22:54:25,111 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:54:25,111 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 22:54:25,111 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 22:54:25,112 INFO  L229       MonitoredProcess]: Starting monitored process 100 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-25 22:54:25,113 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (100)] Waiting until timeout for monitored process
[2023-12-25 22:54:30,075 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 22:54:30,218 INFO  L262         TraceCheckSpWp]: Trace formula consists of 22660 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-12-25 22:54:30,271 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 22:54:30,454 INFO  L134       CoverageAnalysis]: Checked inductivity of 572 backedges. 176 proven. 0 refuted. 0 times theorem prover too weak. 396 trivial. 0 not checked.
[2023-12-25 22:54:30,455 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 22:54:30,455 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 22:54:30,455 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [757108921]
[2023-12-25 22:54:30,455 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 22:54:30,455 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [786086238]
[2023-12-25 22:54:30,455 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [786086238] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 22:54:30,455 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 22:54:30,455 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8
[2023-12-25 22:54:30,455 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [259228995]
[2023-12-25 22:54:30,456 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 22:54:30,458 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 8 states
[2023-12-25 22:54:30,458 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 22:54:30,460 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2023-12-25 22:54:30,460 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56
[2023-12-25 22:54:30,460 INFO  L87              Difference]: Start difference. First operand 7978 states and 13210 transitions. Second operand  has 8 states, 8 states have (on average 592.5) internal successors, (4740), 8 states have internal predecessors, (4740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:54:30,823 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 22:54:30,824 INFO  L93              Difference]: Finished difference Result 21755 states and 36000 transitions.
[2023-12-25 22:54:30,824 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. 
[2023-12-25 22:54:30,825 INFO  L78                 Accepts]: Start accepts. Automaton has  has 8 states, 8 states have (on average 592.5) internal successors, (4740), 8 states have internal predecessors, (4740), 0 states have call successors, (0), 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 5094
[2023-12-25 22:54:30,828 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 22:54:30,844 INFO  L225             Difference]: With dead ends: 21755
[2023-12-25 22:54:30,844 INFO  L226             Difference]: Without dead ends: 14608
[2023-12-25 22:54:30,853 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5102 GetRequests, 5090 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182
[2023-12-25 22:54:30,853 INFO  L413           NwaCegarLoop]: 12360 mSDtfsCounter, 31871 mSDsluCounter, 60787 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31871 SdHoareTripleChecker+Valid, 73147 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-12-25 22:54:30,853 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [31871 Valid, 73147 Invalid, 63 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-12-25 22:54:30,865 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14608 states.
[2023-12-25 22:54:30,949 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14608 to 7978.
[2023-12-25 22:54:30,956 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7978 states, 7977 states have (on average 1.656011031716184) internal successors, (13210), 7977 states have internal predecessors, (13210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:54:30,965 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7978 states to 7978 states and 13210 transitions.
[2023-12-25 22:54:30,965 INFO  L78                 Accepts]: Start accepts. Automaton has 7978 states and 13210 transitions. Word has length 5094
[2023-12-25 22:54:30,967 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 22:54:30,967 INFO  L495      AbstractCegarLoop]: Abstraction has 7978 states and 13210 transitions.
[2023-12-25 22:54:30,968 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 8 states, 8 states have (on average 592.5) internal successors, (4740), 8 states have internal predecessors, (4740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:54:30,968 INFO  L276                IsEmpty]: Start isEmpty. Operand 7978 states and 13210 transitions.
[2023-12-25 22:54:31,096 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5096
[2023-12-25 22:54:31,096 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 22:54:31,097 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-12-25 22:54:31,160 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (100)] Forceful destruction successful, exit code 0
[2023-12-25 22:54:31,319 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101,100 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 22:54:31,319 INFO  L420      AbstractCegarLoop]: === Iteration 103 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 22:54:31,320 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 22:54:31,320 INFO  L85        PathProgramCache]: Analyzing trace with hash -1841435122, now seen corresponding path program 1 times
[2023-12-25 22:54:31,320 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 22:54:31,320 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1912187266]
[2023-12-25 22:54:31,321 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:54:31,321 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 22:54:31,621 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 22:54:31,621 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1422881655]
[2023-12-25 22:54:31,622 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:54:31,622 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 22:54:31,623 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 22:54:31,623 INFO  L229       MonitoredProcess]: Starting monitored process 101 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-25 22:54:31,626 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (101)] Waiting until timeout for monitored process
[2023-12-25 22:54:36,737 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 22:54:36,874 INFO  L262         TraceCheckSpWp]: Trace formula consists of 22663 conjuncts, 21 conjunts are in the unsatisfiable core
[2023-12-25 22:54:36,921 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 22:54:37,109 INFO  L134       CoverageAnalysis]: Checked inductivity of 572 backedges. 172 proven. 0 refuted. 0 times theorem prover too weak. 400 trivial. 0 not checked.
[2023-12-25 22:54:37,109 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 22:54:37,110 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 22:54:37,110 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1912187266]
[2023-12-25 22:54:37,110 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 22:54:37,110 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1422881655]
[2023-12-25 22:54:37,110 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1422881655] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 22:54:37,110 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 22:54:37,110 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8
[2023-12-25 22:54:37,110 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [819946529]
[2023-12-25 22:54:37,110 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 22:54:37,113 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 8 states
[2023-12-25 22:54:37,113 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 22:54:37,114 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2023-12-25 22:54:37,114 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56
[2023-12-25 22:54:37,115 INFO  L87              Difference]: Start difference. First operand 7978 states and 13210 transitions. Second operand  has 8 states, 8 states have (on average 592.375) internal successors, (4739), 8 states have internal predecessors, (4739), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:54:37,596 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 22:54:37,597 INFO  L93              Difference]: Finished difference Result 21755 states and 36000 transitions.
[2023-12-25 22:54:37,597 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. 
[2023-12-25 22:54:37,598 INFO  L78                 Accepts]: Start accepts. Automaton has  has 8 states, 8 states have (on average 592.375) internal successors, (4739), 8 states have internal predecessors, (4739), 0 states have call successors, (0), 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 5095
[2023-12-25 22:54:37,600 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 22:54:37,608 INFO  L225             Difference]: With dead ends: 21755
[2023-12-25 22:54:37,608 INFO  L226             Difference]: Without dead ends: 14614
[2023-12-25 22:54:37,611 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5103 GetRequests, 5091 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182
[2023-12-25 22:54:37,611 INFO  L413           NwaCegarLoop]: 12370 mSDtfsCounter, 31867 mSDsluCounter, 60827 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31867 SdHoareTripleChecker+Valid, 73197 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-12-25 22:54:37,611 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [31867 Valid, 73197 Invalid, 63 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-12-25 22:54:37,617 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14614 states.
[2023-12-25 22:54:37,673 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14614 to 7978.
[2023-12-25 22:54:37,679 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7978 states, 7977 states have (on average 1.656011031716184) internal successors, (13210), 7977 states have internal predecessors, (13210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:54:37,685 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7978 states to 7978 states and 13210 transitions.
[2023-12-25 22:54:37,685 INFO  L78                 Accepts]: Start accepts. Automaton has 7978 states and 13210 transitions. Word has length 5095
[2023-12-25 22:54:37,687 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 22:54:37,687 INFO  L495      AbstractCegarLoop]: Abstraction has 7978 states and 13210 transitions.
[2023-12-25 22:54:37,688 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 8 states, 8 states have (on average 592.375) internal successors, (4739), 8 states have internal predecessors, (4739), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:54:37,688 INFO  L276                IsEmpty]: Start isEmpty. Operand 7978 states and 13210 transitions.
[2023-12-25 22:54:37,812 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5097
[2023-12-25 22:54:37,813 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 22:54:37,814 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-12-25 22:54:37,874 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (101)] Forceful destruction successful, exit code 0
[2023-12-25 22:54:38,028 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 101 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable102
[2023-12-25 22:54:38,029 INFO  L420      AbstractCegarLoop]: === Iteration 104 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 22:54:38,029 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 22:54:38,030 INFO  L85        PathProgramCache]: Analyzing trace with hash -894739690, now seen corresponding path program 1 times
[2023-12-25 22:54:38,030 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 22:54:38,030 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2075989885]
[2023-12-25 22:54:38,030 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:54:38,030 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 22:54:38,344 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 22:54:38,344 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [627711581]
[2023-12-25 22:54:38,345 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:54:38,345 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 22:54:38,345 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 22:54:38,346 INFO  L229       MonitoredProcess]: Starting monitored process 102 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-25 22:54:38,352 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (102)] Waiting until timeout for monitored process
[2023-12-25 22:54:43,427 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 22:54:43,596 INFO  L262         TraceCheckSpWp]: Trace formula consists of 22667 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-12-25 22:54:43,655 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 22:54:44,034 INFO  L134       CoverageAnalysis]: Checked inductivity of 572 backedges. 168 proven. 0 refuted. 0 times theorem prover too weak. 404 trivial. 0 not checked.
[2023-12-25 22:54:44,034 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 22:54:44,034 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 22:54:44,034 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2075989885]
[2023-12-25 22:54:44,034 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 22:54:44,034 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [627711581]
[2023-12-25 22:54:44,034 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [627711581] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 22:54:44,035 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 22:54:44,035 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8
[2023-12-25 22:54:44,035 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2090290780]
[2023-12-25 22:54:44,035 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 22:54:44,037 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 8 states
[2023-12-25 22:54:44,038 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 22:54:44,039 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2023-12-25 22:54:44,039 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56
[2023-12-25 22:54:44,040 INFO  L87              Difference]: Start difference. First operand 7978 states and 13210 transitions. Second operand  has 8 states, 8 states have (on average 592.25) internal successors, (4738), 8 states have internal predecessors, (4738), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:54:44,392 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 22:54:44,392 INFO  L93              Difference]: Finished difference Result 21755 states and 36000 transitions.
[2023-12-25 22:54:44,392 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. 
[2023-12-25 22:54:44,393 INFO  L78                 Accepts]: Start accepts. Automaton has  has 8 states, 8 states have (on average 592.25) internal successors, (4738), 8 states have internal predecessors, (4738), 0 states have call successors, (0), 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 5096
[2023-12-25 22:54:44,396 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 22:54:44,411 INFO  L225             Difference]: With dead ends: 21755
[2023-12-25 22:54:44,411 INFO  L226             Difference]: Without dead ends: 14620
[2023-12-25 22:54:44,419 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5104 GetRequests, 5092 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182
[2023-12-25 22:54:44,420 INFO  L413           NwaCegarLoop]: 12380 mSDtfsCounter, 31863 mSDsluCounter, 59312 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31863 SdHoareTripleChecker+Valid, 71692 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-12-25 22:54:44,420 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [31863 Valid, 71692 Invalid, 52 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-12-25 22:54:44,430 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14620 states.
[2023-12-25 22:54:44,497 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14620 to 7978.
[2023-12-25 22:54:44,503 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7978 states, 7977 states have (on average 1.656011031716184) internal successors, (13210), 7977 states have internal predecessors, (13210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:54:44,509 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7978 states to 7978 states and 13210 transitions.
[2023-12-25 22:54:44,509 INFO  L78                 Accepts]: Start accepts. Automaton has 7978 states and 13210 transitions. Word has length 5096
[2023-12-25 22:54:44,511 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 22:54:44,512 INFO  L495      AbstractCegarLoop]: Abstraction has 7978 states and 13210 transitions.
[2023-12-25 22:54:44,512 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 8 states, 8 states have (on average 592.25) internal successors, (4738), 8 states have internal predecessors, (4738), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:54:44,512 INFO  L276                IsEmpty]: Start isEmpty. Operand 7978 states and 13210 transitions.
[2023-12-25 22:54:44,717 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5098
[2023-12-25 22:54:44,717 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 22:54:44,718 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 22:54:44,780 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (102)] Ended with exit code 0
[2023-12-25 22:54:44,932 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 102 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable103
[2023-12-25 22:54:44,932 INFO  L420      AbstractCegarLoop]: === Iteration 105 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 22:54:44,933 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 22:54:44,933 INFO  L85        PathProgramCache]: Analyzing trace with hash -1364950580, now seen corresponding path program 1 times
[2023-12-25 22:54:44,933 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 22:54:44,933 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1345879927]
[2023-12-25 22:54:44,934 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:54:44,934 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 22:54:45,240 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 22:54:45,240 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [467576282]
[2023-12-25 22:54:45,241 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:54:45,241 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 22:54:45,241 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 22:54:45,242 INFO  L229       MonitoredProcess]: Starting monitored process 103 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-25 22:54:45,244 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (103)] Waiting until timeout for monitored process
[2023-12-25 22:54:50,215 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 22:54:50,367 INFO  L262         TraceCheckSpWp]: Trace formula consists of 22670 conjuncts, 21 conjunts are in the unsatisfiable core
[2023-12-25 22:54:50,416 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 22:54:50,590 INFO  L134       CoverageAnalysis]: Checked inductivity of 572 backedges. 164 proven. 0 refuted. 0 times theorem prover too weak. 408 trivial. 0 not checked.
[2023-12-25 22:54:50,590 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 22:54:50,590 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 22:54:50,590 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1345879927]
[2023-12-25 22:54:50,590 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 22:54:50,590 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [467576282]
[2023-12-25 22:54:50,590 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [467576282] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 22:54:50,590 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 22:54:50,591 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8
[2023-12-25 22:54:50,591 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2105921049]
[2023-12-25 22:54:50,591 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 22:54:50,593 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 8 states
[2023-12-25 22:54:50,593 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 22:54:50,595 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2023-12-25 22:54:50,595 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56
[2023-12-25 22:54:50,595 INFO  L87              Difference]: Start difference. First operand 7978 states and 13210 transitions. Second operand  has 8 states, 8 states have (on average 592.125) internal successors, (4737), 8 states have internal predecessors, (4737), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:54:50,964 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 22:54:50,964 INFO  L93              Difference]: Finished difference Result 21755 states and 36000 transitions.
[2023-12-25 22:54:50,965 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. 
[2023-12-25 22:54:50,966 INFO  L78                 Accepts]: Start accepts. Automaton has  has 8 states, 8 states have (on average 592.125) internal successors, (4737), 8 states have internal predecessors, (4737), 0 states have call successors, (0), 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 5097
[2023-12-25 22:54:50,969 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 22:54:50,983 INFO  L225             Difference]: With dead ends: 21755
[2023-12-25 22:54:50,983 INFO  L226             Difference]: Without dead ends: 14626
[2023-12-25 22:54:50,990 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5105 GetRequests, 5093 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182
[2023-12-25 22:54:50,990 INFO  L413           NwaCegarLoop]: 12390 mSDtfsCounter, 31859 mSDsluCounter, 59345 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31859 SdHoareTripleChecker+Valid, 71735 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-12-25 22:54:50,990 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [31859 Valid, 71735 Invalid, 52 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-12-25 22:54:50,999 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14626 states.
[2023-12-25 22:54:51,079 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14626 to 7978.
[2023-12-25 22:54:51,087 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7978 states, 7977 states have (on average 1.656011031716184) internal successors, (13210), 7977 states have internal predecessors, (13210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:54:51,094 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7978 states to 7978 states and 13210 transitions.
[2023-12-25 22:54:51,094 INFO  L78                 Accepts]: Start accepts. Automaton has 7978 states and 13210 transitions. Word has length 5097
[2023-12-25 22:54:51,096 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 22:54:51,096 INFO  L495      AbstractCegarLoop]: Abstraction has 7978 states and 13210 transitions.
[2023-12-25 22:54:51,097 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 8 states, 8 states have (on average 592.125) internal successors, (4737), 8 states have internal predecessors, (4737), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:54:51,097 INFO  L276                IsEmpty]: Start isEmpty. Operand 7978 states and 13210 transitions.
[2023-12-25 22:54:51,314 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5099
[2023-12-25 22:54:51,314 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 22:54:51,316 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-12-25 22:54:51,383 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (103)] Ended with exit code 0
[2023-12-25 22:54:51,518 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 103 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable104
[2023-12-25 22:54:51,518 INFO  L420      AbstractCegarLoop]: === Iteration 106 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 22:54:51,519 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 22:54:51,519 INFO  L85        PathProgramCache]: Analyzing trace with hash -513629800, now seen corresponding path program 1 times
[2023-12-25 22:54:51,519 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 22:54:51,519 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1724495603]
[2023-12-25 22:54:51,520 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:54:51,520 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 22:54:51,834 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 22:54:51,834 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [146874634]
[2023-12-25 22:54:51,835 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:54:51,835 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 22:54:51,835 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 22:54:51,836 INFO  L229       MonitoredProcess]: Starting monitored process 104 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-25 22:54:51,838 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (104)] Waiting until timeout for monitored process
[2023-12-25 22:54:56,906 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 22:54:57,052 INFO  L262         TraceCheckSpWp]: Trace formula consists of 22674 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-12-25 22:54:57,105 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 22:54:57,289 INFO  L134       CoverageAnalysis]: Checked inductivity of 572 backedges. 160 proven. 0 refuted. 0 times theorem prover too weak. 412 trivial. 0 not checked.
[2023-12-25 22:54:57,289 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 22:54:57,289 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 22:54:57,289 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1724495603]
[2023-12-25 22:54:57,289 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 22:54:57,289 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [146874634]
[2023-12-25 22:54:57,289 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [146874634] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 22:54:57,289 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 22:54:57,290 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8
[2023-12-25 22:54:57,290 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1473272139]
[2023-12-25 22:54:57,290 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 22:54:57,292 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 8 states
[2023-12-25 22:54:57,292 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 22:54:57,294 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2023-12-25 22:54:57,294 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56
[2023-12-25 22:54:57,294 INFO  L87              Difference]: Start difference. First operand 7978 states and 13210 transitions. Second operand  has 8 states, 8 states have (on average 592.0) internal successors, (4736), 8 states have internal predecessors, (4736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:54:57,667 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 22:54:57,667 INFO  L93              Difference]: Finished difference Result 21755 states and 36000 transitions.
[2023-12-25 22:54:57,668 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. 
[2023-12-25 22:54:57,669 INFO  L78                 Accepts]: Start accepts. Automaton has  has 8 states, 8 states have (on average 592.0) internal successors, (4736), 8 states have internal predecessors, (4736), 0 states have call successors, (0), 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 5098
[2023-12-25 22:54:57,672 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 22:54:57,685 INFO  L225             Difference]: With dead ends: 21755
[2023-12-25 22:54:57,686 INFO  L226             Difference]: Without dead ends: 14632
[2023-12-25 22:54:57,694 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5106 GetRequests, 5094 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182
[2023-12-25 22:54:57,694 INFO  L413           NwaCegarLoop]: 12400 mSDtfsCounter, 31855 mSDsluCounter, 60947 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31855 SdHoareTripleChecker+Valid, 73347 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-12-25 22:54:57,694 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [31855 Valid, 73347 Invalid, 63 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-12-25 22:54:57,703 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14632 states.
[2023-12-25 22:54:57,770 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14632 to 7978.
[2023-12-25 22:54:57,776 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7978 states, 7977 states have (on average 1.656011031716184) internal successors, (13210), 7977 states have internal predecessors, (13210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:54:57,783 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7978 states to 7978 states and 13210 transitions.
[2023-12-25 22:54:57,783 INFO  L78                 Accepts]: Start accepts. Automaton has 7978 states and 13210 transitions. Word has length 5098
[2023-12-25 22:54:57,786 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 22:54:57,786 INFO  L495      AbstractCegarLoop]: Abstraction has 7978 states and 13210 transitions.
[2023-12-25 22:54:57,787 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 8 states, 8 states have (on average 592.0) internal successors, (4736), 8 states have internal predecessors, (4736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:54:57,787 INFO  L276                IsEmpty]: Start isEmpty. Operand 7978 states and 13210 transitions.
[2023-12-25 22:54:58,023 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5100
[2023-12-25 22:54:58,023 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 22:54:58,024 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-12-25 22:54:58,095 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (104)] Forceful destruction successful, exit code 0
[2023-12-25 22:54:58,241 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105,104 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 22:54:58,241 INFO  L420      AbstractCegarLoop]: === Iteration 107 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 22:54:58,242 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 22:54:58,242 INFO  L85        PathProgramCache]: Analyzing trace with hash 2100306826, now seen corresponding path program 1 times
[2023-12-25 22:54:58,242 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 22:54:58,242 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [983790631]
[2023-12-25 22:54:58,243 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:54:58,243 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 22:54:58,569 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 22:54:58,569 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [13584061]
[2023-12-25 22:54:58,570 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:54:58,571 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 22:54:58,571 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 22:54:58,572 INFO  L229       MonitoredProcess]: Starting monitored process 105 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-25 22:54:58,573 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (105)] Waiting until timeout for monitored process
[2023-12-25 22:55:03,455 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 22:55:03,599 INFO  L262         TraceCheckSpWp]: Trace formula consists of 22677 conjuncts, 21 conjunts are in the unsatisfiable core
[2023-12-25 22:55:03,654 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 22:55:03,844 INFO  L134       CoverageAnalysis]: Checked inductivity of 572 backedges. 156 proven. 0 refuted. 0 times theorem prover too weak. 416 trivial. 0 not checked.
[2023-12-25 22:55:03,845 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 22:55:03,845 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 22:55:03,845 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [983790631]
[2023-12-25 22:55:03,845 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 22:55:03,845 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [13584061]
[2023-12-25 22:55:03,845 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [13584061] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 22:55:03,845 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 22:55:03,845 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8
[2023-12-25 22:55:03,845 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [470406098]
[2023-12-25 22:55:03,846 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 22:55:03,848 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 8 states
[2023-12-25 22:55:03,848 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 22:55:03,850 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2023-12-25 22:55:03,850 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56
[2023-12-25 22:55:03,850 INFO  L87              Difference]: Start difference. First operand 7978 states and 13210 transitions. Second operand  has 8 states, 8 states have (on average 591.875) internal successors, (4735), 8 states have internal predecessors, (4735), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:55:04,367 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 22:55:04,367 INFO  L93              Difference]: Finished difference Result 21755 states and 36000 transitions.
[2023-12-25 22:55:04,367 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. 
[2023-12-25 22:55:04,368 INFO  L78                 Accepts]: Start accepts. Automaton has  has 8 states, 8 states have (on average 591.875) internal successors, (4735), 8 states have internal predecessors, (4735), 0 states have call successors, (0), 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 5099
[2023-12-25 22:55:04,371 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 22:55:04,381 INFO  L225             Difference]: With dead ends: 21755
[2023-12-25 22:55:04,381 INFO  L226             Difference]: Without dead ends: 14638
[2023-12-25 22:55:04,385 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5107 GetRequests, 5095 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182
[2023-12-25 22:55:04,385 INFO  L413           NwaCegarLoop]: 12410 mSDtfsCounter, 31851 mSDsluCounter, 59411 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31851 SdHoareTripleChecker+Valid, 71821 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-12-25 22:55:04,385 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [31851 Valid, 71821 Invalid, 52 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-12-25 22:55:04,393 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14638 states.
[2023-12-25 22:55:04,459 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14638 to 7978.
[2023-12-25 22:55:04,468 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7978 states, 7977 states have (on average 1.656011031716184) internal successors, (13210), 7977 states have internal predecessors, (13210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:55:04,475 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7978 states to 7978 states and 13210 transitions.
[2023-12-25 22:55:04,475 INFO  L78                 Accepts]: Start accepts. Automaton has 7978 states and 13210 transitions. Word has length 5099
[2023-12-25 22:55:04,477 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 22:55:04,478 INFO  L495      AbstractCegarLoop]: Abstraction has 7978 states and 13210 transitions.
[2023-12-25 22:55:04,478 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 8 states, 8 states have (on average 591.875) internal successors, (4735), 8 states have internal predecessors, (4735), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:55:04,478 INFO  L276                IsEmpty]: Start isEmpty. Operand 7978 states and 13210 transitions.
[2023-12-25 22:55:04,605 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5101
[2023-12-25 22:55:04,605 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 22:55:04,606 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 22:55:04,676 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (105)] Forceful destruction successful, exit code 0
[2023-12-25 22:55:04,812 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106,105 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 22:55:04,813 INFO  L420      AbstractCegarLoop]: === Iteration 108 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 22:55:04,813 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 22:55:04,814 INFO  L85        PathProgramCache]: Analyzing trace with hash 1014479386, now seen corresponding path program 1 times
[2023-12-25 22:55:04,814 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 22:55:04,814 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2095621118]
[2023-12-25 22:55:04,814 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:55:04,814 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 22:55:05,131 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 22:55:05,132 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [774261322]
[2023-12-25 22:55:05,133 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:55:05,133 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 22:55:05,133 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 22:55:05,134 INFO  L229       MonitoredProcess]: Starting monitored process 106 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-25 22:55:05,159 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (106)] Waiting until timeout for monitored process
[2023-12-25 22:55:10,235 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 22:55:10,409 INFO  L262         TraceCheckSpWp]: Trace formula consists of 22681 conjuncts, 17 conjunts are in the unsatisfiable core
[2023-12-25 22:55:10,471 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 22:55:10,863 INFO  L134       CoverageAnalysis]: Checked inductivity of 572 backedges. 150 proven. 0 refuted. 0 times theorem prover too weak. 422 trivial. 0 not checked.
[2023-12-25 22:55:10,863 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 22:55:10,864 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 22:55:10,864 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2095621118]
[2023-12-25 22:55:10,864 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 22:55:10,864 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [774261322]
[2023-12-25 22:55:10,864 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [774261322] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 22:55:10,864 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 22:55:10,865 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-12-25 22:55:10,865 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1878241454]
[2023-12-25 22:55:10,865 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 22:55:10,867 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-12-25 22:55:10,868 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 22:55:10,870 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-12-25 22:55:10,870 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-12-25 22:55:10,871 INFO  L87              Difference]: Start difference. First operand 7978 states and 13210 transitions. Second operand  has 7 states, 7 states have (on average 676.1428571428571) internal successors, (4733), 7 states have internal predecessors, (4733), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:55:11,219 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 22:55:11,220 INFO  L93              Difference]: Finished difference Result 21755 states and 36000 transitions.
[2023-12-25 22:55:11,220 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. 
[2023-12-25 22:55:11,221 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 676.1428571428571) internal successors, (4733), 7 states have internal predecessors, (4733), 0 states have call successors, (0), 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 5100
[2023-12-25 22:55:11,224 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 22:55:11,241 INFO  L225             Difference]: With dead ends: 21755
[2023-12-25 22:55:11,241 INFO  L226             Difference]: Without dead ends: 14647
[2023-12-25 22:55:11,250 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5108 GetRequests, 5097 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156
[2023-12-25 22:55:11,250 INFO  L413           NwaCegarLoop]: 12425 mSDtfsCounter, 31848 mSDsluCounter, 48631 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31848 SdHoareTripleChecker+Valid, 61056 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-12-25 22:55:11,250 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [31848 Valid, 61056 Invalid, 47 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-12-25 22:55:11,263 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14647 states.
[2023-12-25 22:55:11,345 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14647 to 7978.
[2023-12-25 22:55:11,353 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7978 states, 7977 states have (on average 1.656011031716184) internal successors, (13210), 7977 states have internal predecessors, (13210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:55:11,362 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7978 states to 7978 states and 13210 transitions.
[2023-12-25 22:55:11,362 INFO  L78                 Accepts]: Start accepts. Automaton has 7978 states and 13210 transitions. Word has length 5100
[2023-12-25 22:55:11,365 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 22:55:11,365 INFO  L495      AbstractCegarLoop]: Abstraction has 7978 states and 13210 transitions.
[2023-12-25 22:55:11,366 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 676.1428571428571) internal successors, (4733), 7 states have internal predecessors, (4733), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:55:11,366 INFO  L276                IsEmpty]: Start isEmpty. Operand 7978 states and 13210 transitions.
[2023-12-25 22:55:11,500 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5102
[2023-12-25 22:55:11,500 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 22:55:11,501 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-12-25 22:55:11,584 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (106)] Forceful destruction successful, exit code 0
[2023-12-25 22:55:11,707 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 106 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable107
[2023-12-25 22:55:11,708 INFO  L420      AbstractCegarLoop]: === Iteration 109 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 22:55:11,708 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 22:55:11,709 INFO  L85        PathProgramCache]: Analyzing trace with hash -1260616658, now seen corresponding path program 1 times
[2023-12-25 22:55:11,709 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 22:55:11,709 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [788563523]
[2023-12-25 22:55:11,709 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:55:11,709 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 22:55:12,081 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 22:55:12,082 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [305477552]
[2023-12-25 22:55:12,083 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:55:12,083 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 22:55:12,083 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 22:55:12,084 INFO  L229       MonitoredProcess]: Starting monitored process 107 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-25 22:55:12,086 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (107)] Waiting until timeout for monitored process
[2023-12-25 22:55:17,126 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 22:55:17,265 INFO  L262         TraceCheckSpWp]: Trace formula consists of 22684 conjuncts, 21 conjunts are in the unsatisfiable core
[2023-12-25 22:55:17,315 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 22:55:17,520 INFO  L134       CoverageAnalysis]: Checked inductivity of 572 backedges. 146 proven. 0 refuted. 0 times theorem prover too weak. 426 trivial. 0 not checked.
[2023-12-25 22:55:17,520 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 22:55:17,521 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 22:55:17,521 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [788563523]
[2023-12-25 22:55:17,521 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 22:55:17,521 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [305477552]
[2023-12-25 22:55:17,521 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [305477552] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 22:55:17,521 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 22:55:17,521 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8
[2023-12-25 22:55:17,521 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [123501945]
[2023-12-25 22:55:17,521 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 22:55:17,524 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 8 states
[2023-12-25 22:55:17,524 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 22:55:17,525 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2023-12-25 22:55:17,525 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56
[2023-12-25 22:55:17,526 INFO  L87              Difference]: Start difference. First operand 7978 states and 13210 transitions. Second operand  has 8 states, 8 states have (on average 591.5) internal successors, (4732), 8 states have internal predecessors, (4732), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:55:17,878 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 22:55:17,878 INFO  L93              Difference]: Finished difference Result 21755 states and 36000 transitions.
[2023-12-25 22:55:17,878 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. 
[2023-12-25 22:55:17,879 INFO  L78                 Accepts]: Start accepts. Automaton has  has 8 states, 8 states have (on average 591.5) internal successors, (4732), 8 states have internal predecessors, (4732), 0 states have call successors, (0), 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 5101
[2023-12-25 22:55:17,882 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 22:55:17,896 INFO  L225             Difference]: With dead ends: 21755
[2023-12-25 22:55:17,896 INFO  L226             Difference]: Without dead ends: 14653
[2023-12-25 22:55:17,903 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5109 GetRequests, 5097 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182
[2023-12-25 22:55:17,904 INFO  L413           NwaCegarLoop]: 12435 mSDtfsCounter, 31844 mSDsluCounter, 59495 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31844 SdHoareTripleChecker+Valid, 71930 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-12-25 22:55:17,904 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [31844 Valid, 71930 Invalid, 52 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-12-25 22:55:17,914 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14653 states.
[2023-12-25 22:55:17,986 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14653 to 7978.
[2023-12-25 22:55:17,993 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7978 states, 7977 states have (on average 1.656011031716184) internal successors, (13210), 7977 states have internal predecessors, (13210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:55:18,001 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7978 states to 7978 states and 13210 transitions.
[2023-12-25 22:55:18,001 INFO  L78                 Accepts]: Start accepts. Automaton has 7978 states and 13210 transitions. Word has length 5101
[2023-12-25 22:55:18,003 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 22:55:18,003 INFO  L495      AbstractCegarLoop]: Abstraction has 7978 states and 13210 transitions.
[2023-12-25 22:55:18,004 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 8 states, 8 states have (on average 591.5) internal successors, (4732), 8 states have internal predecessors, (4732), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:55:18,004 INFO  L276                IsEmpty]: Start isEmpty. Operand 7978 states and 13210 transitions.
[2023-12-25 22:55:18,203 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5103
[2023-12-25 22:55:18,203 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 22:55:18,205 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-12-25 22:55:18,271 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (107)] Forceful destruction successful, exit code 0
[2023-12-25 22:55:18,432 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108,107 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 22:55:18,433 INFO  L420      AbstractCegarLoop]: === Iteration 110 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 22:55:18,433 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 22:55:18,433 INFO  L85        PathProgramCache]: Analyzing trace with hash 1060694942, now seen corresponding path program 1 times
[2023-12-25 22:55:18,433 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 22:55:18,433 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1561720423]
[2023-12-25 22:55:18,434 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:55:18,434 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 22:55:18,765 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 22:55:18,765 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1353683042]
[2023-12-25 22:55:18,766 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:55:18,766 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 22:55:18,766 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 22:55:18,767 INFO  L229       MonitoredProcess]: Starting monitored process 108 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-25 22:55:18,768 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (108)] Waiting until timeout for monitored process
[2023-12-25 22:55:23,865 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 22:55:24,037 INFO  L262         TraceCheckSpWp]: Trace formula consists of 22687 conjuncts, 17 conjunts are in the unsatisfiable core
[2023-12-25 22:55:24,096 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 22:55:24,274 INFO  L134       CoverageAnalysis]: Checked inductivity of 572 backedges. 142 proven. 0 refuted. 0 times theorem prover too weak. 430 trivial. 0 not checked.
[2023-12-25 22:55:24,274 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 22:55:24,274 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 22:55:24,274 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1561720423]
[2023-12-25 22:55:24,274 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 22:55:24,274 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1353683042]
[2023-12-25 22:55:24,274 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1353683042] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 22:55:24,274 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 22:55:24,275 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-12-25 22:55:24,275 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1644976811]
[2023-12-25 22:55:24,275 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 22:55:24,277 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-12-25 22:55:24,277 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 22:55:24,279 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-12-25 22:55:24,279 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-12-25 22:55:24,279 INFO  L87              Difference]: Start difference. First operand 7978 states and 13210 transitions. Second operand  has 7 states, 7 states have (on average 675.8571428571429) internal successors, (4731), 7 states have internal predecessors, (4731), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:55:24,597 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 22:55:24,597 INFO  L93              Difference]: Finished difference Result 21755 states and 36000 transitions.
[2023-12-25 22:55:24,597 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. 
[2023-12-25 22:55:24,598 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 675.8571428571429) internal successors, (4731), 7 states have internal predecessors, (4731), 0 states have call successors, (0), 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 5102
[2023-12-25 22:55:24,602 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 22:55:24,616 INFO  L225             Difference]: With dead ends: 21755
[2023-12-25 22:55:24,616 INFO  L226             Difference]: Without dead ends: 14659
[2023-12-25 22:55:24,624 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5110 GetRequests, 5099 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156
[2023-12-25 22:55:24,625 INFO  L413           NwaCegarLoop]: 12445 mSDtfsCounter, 31840 mSDsluCounter, 48691 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31840 SdHoareTripleChecker+Valid, 61136 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-12-25 22:55:24,625 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [31840 Valid, 61136 Invalid, 47 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-12-25 22:55:24,637 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14659 states.
[2023-12-25 22:55:24,715 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14659 to 7978.
[2023-12-25 22:55:24,722 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7978 states, 7977 states have (on average 1.656011031716184) internal successors, (13210), 7977 states have internal predecessors, (13210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:55:24,730 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7978 states to 7978 states and 13210 transitions.
[2023-12-25 22:55:24,730 INFO  L78                 Accepts]: Start accepts. Automaton has 7978 states and 13210 transitions. Word has length 5102
[2023-12-25 22:55:24,733 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 22:55:24,733 INFO  L495      AbstractCegarLoop]: Abstraction has 7978 states and 13210 transitions.
[2023-12-25 22:55:24,734 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 675.8571428571429) internal successors, (4731), 7 states have internal predecessors, (4731), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:55:24,734 INFO  L276                IsEmpty]: Start isEmpty. Operand 7978 states and 13210 transitions.
[2023-12-25 22:55:24,957 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5104
[2023-12-25 22:55:24,957 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 22:55:24,958 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]
[2023-12-25 22:55:25,036 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (108)] Ended with exit code 0
[2023-12-25 22:55:25,172 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109,108 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 22:55:25,172 INFO  L420      AbstractCegarLoop]: === Iteration 111 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 22:55:25,173 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 22:55:25,173 INFO  L85        PathProgramCache]: Analyzing trace with hash -446640018, now seen corresponding path program 1 times
[2023-12-25 22:55:25,173 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 22:55:25,173 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1195871047]
[2023-12-25 22:55:25,174 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:55:25,174 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 22:55:25,500 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 22:55:25,500 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1646517205]
[2023-12-25 22:55:25,501 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:55:25,501 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 22:55:25,501 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 22:55:25,502 INFO  L229       MonitoredProcess]: Starting monitored process 109 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-25 22:55:25,507 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (109)] Waiting until timeout for monitored process
[2023-12-25 22:55:30,695 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 22:55:30,882 INFO  L262         TraceCheckSpWp]: Trace formula consists of 22690 conjuncts, 21 conjunts are in the unsatisfiable core
[2023-12-25 22:55:30,948 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 22:55:31,139 INFO  L134       CoverageAnalysis]: Checked inductivity of 572 backedges. 138 proven. 0 refuted. 0 times theorem prover too weak. 434 trivial. 0 not checked.
[2023-12-25 22:55:31,140 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 22:55:31,140 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 22:55:31,140 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1195871047]
[2023-12-25 22:55:31,140 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 22:55:31,140 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1646517205]
[2023-12-25 22:55:31,140 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1646517205] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 22:55:31,140 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 22:55:31,140 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8
[2023-12-25 22:55:31,141 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [673562243]
[2023-12-25 22:55:31,141 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 22:55:31,144 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 8 states
[2023-12-25 22:55:31,144 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 22:55:31,146 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2023-12-25 22:55:31,146 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56
[2023-12-25 22:55:31,146 INFO  L87              Difference]: Start difference. First operand 7978 states and 13210 transitions. Second operand  has 8 states, 8 states have (on average 591.25) internal successors, (4730), 8 states have internal predecessors, (4730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:55:31,560 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 22:55:31,561 INFO  L93              Difference]: Finished difference Result 21755 states and 36000 transitions.
[2023-12-25 22:55:31,561 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. 
[2023-12-25 22:55:31,562 INFO  L78                 Accepts]: Start accepts. Automaton has  has 8 states, 8 states have (on average 591.25) internal successors, (4730), 8 states have internal predecessors, (4730), 0 states have call successors, (0), 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 5103
[2023-12-25 22:55:31,565 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 22:55:31,581 INFO  L225             Difference]: With dead ends: 21755
[2023-12-25 22:55:31,581 INFO  L226             Difference]: Without dead ends: 14665
[2023-12-25 22:55:31,590 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5111 GetRequests, 5099 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182
[2023-12-25 22:55:31,590 INFO  L413           NwaCegarLoop]: 12455 mSDtfsCounter, 31836 mSDsluCounter, 61167 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31836 SdHoareTripleChecker+Valid, 73622 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-12-25 22:55:31,590 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [31836 Valid, 73622 Invalid, 63 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-12-25 22:55:31,601 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14665 states.
[2023-12-25 22:55:31,681 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14665 to 7978.
[2023-12-25 22:55:31,688 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7978 states, 7977 states have (on average 1.656011031716184) internal successors, (13210), 7977 states have internal predecessors, (13210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:55:31,696 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7978 states to 7978 states and 13210 transitions.
[2023-12-25 22:55:31,696 INFO  L78                 Accepts]: Start accepts. Automaton has 7978 states and 13210 transitions. Word has length 5103
[2023-12-25 22:55:31,698 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 22:55:31,698 INFO  L495      AbstractCegarLoop]: Abstraction has 7978 states and 13210 transitions.
[2023-12-25 22:55:31,700 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 8 states, 8 states have (on average 591.25) internal successors, (4730), 8 states have internal predecessors, (4730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:55:31,700 INFO  L276                IsEmpty]: Start isEmpty. Operand 7978 states and 13210 transitions.
[2023-12-25 22:55:31,951 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5105
[2023-12-25 22:55:31,951 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 22:55:31,952 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]
[2023-12-25 22:55:32,046 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (109)] Forceful destruction successful, exit code 0
[2023-12-25 22:55:32,152 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110,109 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 22:55:32,153 INFO  L420      AbstractCegarLoop]: === Iteration 112 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 22:55:32,153 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 22:55:32,153 INFO  L85        PathProgramCache]: Analyzing trace with hash 1143450018, now seen corresponding path program 1 times
[2023-12-25 22:55:32,154 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 22:55:32,154 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [547037524]
[2023-12-25 22:55:32,154 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:55:32,154 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 22:55:32,476 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 22:55:32,476 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1479165202]
[2023-12-25 22:55:32,477 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:55:32,477 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 22:55:32,477 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 22:55:32,480 INFO  L229       MonitoredProcess]: Starting monitored process 110 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-25 22:55:32,481 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (110)] Waiting until timeout for monitored process
[2023-12-25 22:55:37,583 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 22:55:37,750 INFO  L262         TraceCheckSpWp]: Trace formula consists of 22693 conjuncts, 17 conjunts are in the unsatisfiable core
[2023-12-25 22:55:37,816 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 22:55:37,991 INFO  L134       CoverageAnalysis]: Checked inductivity of 572 backedges. 134 proven. 0 refuted. 0 times theorem prover too weak. 438 trivial. 0 not checked.
[2023-12-25 22:55:37,992 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 22:55:37,992 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 22:55:37,992 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [547037524]
[2023-12-25 22:55:37,992 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 22:55:37,992 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1479165202]
[2023-12-25 22:55:37,992 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1479165202] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 22:55:37,992 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 22:55:37,992 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-12-25 22:55:37,992 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [577543956]
[2023-12-25 22:55:37,992 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 22:55:37,995 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-12-25 22:55:37,995 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 22:55:37,996 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-12-25 22:55:37,996 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-12-25 22:55:37,997 INFO  L87              Difference]: Start difference. First operand 7978 states and 13210 transitions. Second operand  has 7 states, 7 states have (on average 675.5714285714286) internal successors, (4729), 7 states have internal predecessors, (4729), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:55:38,395 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 22:55:38,395 INFO  L93              Difference]: Finished difference Result 21755 states and 36000 transitions.
[2023-12-25 22:55:38,395 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. 
[2023-12-25 22:55:38,397 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 675.5714285714286) internal successors, (4729), 7 states have internal predecessors, (4729), 0 states have call successors, (0), 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 5104
[2023-12-25 22:55:38,400 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 22:55:38,417 INFO  L225             Difference]: With dead ends: 21755
[2023-12-25 22:55:38,417 INFO  L226             Difference]: Without dead ends: 14671
[2023-12-25 22:55:38,427 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5112 GetRequests, 5101 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156
[2023-12-25 22:55:38,427 INFO  L413           NwaCegarLoop]: 12465 mSDtfsCounter, 31832 mSDsluCounter, 48751 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31832 SdHoareTripleChecker+Valid, 61216 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-12-25 22:55:38,428 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [31832 Valid, 61216 Invalid, 47 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-12-25 22:55:38,442 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14671 states.
[2023-12-25 22:55:38,534 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14671 to 7978.
[2023-12-25 22:55:38,542 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7978 states, 7977 states have (on average 1.656011031716184) internal successors, (13210), 7977 states have internal predecessors, (13210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:55:38,551 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7978 states to 7978 states and 13210 transitions.
[2023-12-25 22:55:38,551 INFO  L78                 Accepts]: Start accepts. Automaton has 7978 states and 13210 transitions. Word has length 5104
[2023-12-25 22:55:38,554 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 22:55:38,554 INFO  L495      AbstractCegarLoop]: Abstraction has 7978 states and 13210 transitions.
[2023-12-25 22:55:38,555 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 675.5714285714286) internal successors, (4729), 7 states have internal predecessors, (4729), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:55:38,555 INFO  L276                IsEmpty]: Start isEmpty. Operand 7978 states and 13210 transitions.
[2023-12-25 22:55:38,692 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5106
[2023-12-25 22:55:38,692 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 22:55:38,693 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]
[2023-12-25 22:55:38,775 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (110)] Ended with exit code 0
[2023-12-25 22:55:38,909 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 110 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable111
[2023-12-25 22:55:38,909 INFO  L420      AbstractCegarLoop]: === Iteration 113 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 22:55:38,909 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 22:55:38,910 INFO  L85        PathProgramCache]: Analyzing trace with hash -1192745682, now seen corresponding path program 1 times
[2023-12-25 22:55:38,910 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 22:55:38,910 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [133870573]
[2023-12-25 22:55:38,910 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:55:38,910 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 22:55:39,442 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 22:55:39,442 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1188729345]
[2023-12-25 22:55:39,443 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:55:39,443 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 22:55:39,444 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 22:55:39,446 INFO  L229       MonitoredProcess]: Starting monitored process 111 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-25 22:55:39,467 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (111)] Waiting until timeout for monitored process
[2023-12-25 22:55:44,588 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 22:55:44,729 INFO  L262         TraceCheckSpWp]: Trace formula consists of 22696 conjuncts, 21 conjunts are in the unsatisfiable core
[2023-12-25 22:55:44,778 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 22:55:44,991 INFO  L134       CoverageAnalysis]: Checked inductivity of 572 backedges. 130 proven. 0 refuted. 0 times theorem prover too weak. 442 trivial. 0 not checked.
[2023-12-25 22:55:44,991 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 22:55:44,991 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 22:55:44,991 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [133870573]
[2023-12-25 22:55:44,991 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 22:55:44,991 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1188729345]
[2023-12-25 22:55:44,991 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1188729345] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 22:55:44,991 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 22:55:44,991 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8
[2023-12-25 22:55:44,992 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [972302034]
[2023-12-25 22:55:44,992 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 22:55:44,994 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 8 states
[2023-12-25 22:55:44,994 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 22:55:44,996 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2023-12-25 22:55:44,996 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56
[2023-12-25 22:55:44,996 INFO  L87              Difference]: Start difference. First operand 7978 states and 13210 transitions. Second operand  has 8 states, 8 states have (on average 591.0) internal successors, (4728), 8 states have internal predecessors, (4728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:55:45,410 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 22:55:45,410 INFO  L93              Difference]: Finished difference Result 21755 states and 36000 transitions.
[2023-12-25 22:55:45,410 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. 
[2023-12-25 22:55:45,411 INFO  L78                 Accepts]: Start accepts. Automaton has  has 8 states, 8 states have (on average 591.0) internal successors, (4728), 8 states have internal predecessors, (4728), 0 states have call successors, (0), 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 5105
[2023-12-25 22:55:45,415 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 22:55:45,429 INFO  L225             Difference]: With dead ends: 21755
[2023-12-25 22:55:45,429 INFO  L226             Difference]: Without dead ends: 14677
[2023-12-25 22:55:45,437 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5113 GetRequests, 5101 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182
[2023-12-25 22:55:45,438 INFO  L413           NwaCegarLoop]: 12475 mSDtfsCounter, 31828 mSDsluCounter, 61247 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31828 SdHoareTripleChecker+Valid, 73722 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-12-25 22:55:45,438 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [31828 Valid, 73722 Invalid, 63 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-12-25 22:55:45,450 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14677 states.
[2023-12-25 22:55:45,537 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14677 to 7978.
[2023-12-25 22:55:45,545 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7978 states, 7977 states have (on average 1.656011031716184) internal successors, (13210), 7977 states have internal predecessors, (13210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:55:45,554 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7978 states to 7978 states and 13210 transitions.
[2023-12-25 22:55:45,554 INFO  L78                 Accepts]: Start accepts. Automaton has 7978 states and 13210 transitions. Word has length 5105
[2023-12-25 22:55:45,557 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 22:55:45,557 INFO  L495      AbstractCegarLoop]: Abstraction has 7978 states and 13210 transitions.
[2023-12-25 22:55:45,557 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 8 states, 8 states have (on average 591.0) internal successors, (4728), 8 states have internal predecessors, (4728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:55:45,557 INFO  L276                IsEmpty]: Start isEmpty. Operand 7978 states and 13210 transitions.
[2023-12-25 22:55:45,728 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5107
[2023-12-25 22:55:45,729 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 22:55:45,730 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]
[2023-12-25 22:55:45,809 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (111)] Ended with exit code 0
[2023-12-25 22:55:45,932 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 111 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable112
[2023-12-25 22:55:45,932 INFO  L420      AbstractCegarLoop]: === Iteration 114 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 22:55:45,933 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 22:55:45,933 INFO  L85        PathProgramCache]: Analyzing trace with hash -1639861210, now seen corresponding path program 1 times
[2023-12-25 22:55:45,933 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 22:55:45,933 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [734864145]
[2023-12-25 22:55:45,934 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:55:45,934 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 22:55:46,339 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 22:55:46,339 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [748861441]
[2023-12-25 22:55:46,340 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:55:46,340 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 22:55:46,340 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 22:55:46,341 INFO  L229       MonitoredProcess]: Starting monitored process 112 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-25 22:55:46,344 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (112)] Waiting until timeout for monitored process
[2023-12-25 22:55:51,299 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 22:55:51,441 INFO  L262         TraceCheckSpWp]: Trace formula consists of 22699 conjuncts, 17 conjunts are in the unsatisfiable core
[2023-12-25 22:55:51,486 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 22:55:51,683 INFO  L134       CoverageAnalysis]: Checked inductivity of 572 backedges. 126 proven. 0 refuted. 0 times theorem prover too weak. 446 trivial. 0 not checked.
[2023-12-25 22:55:51,683 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 22:55:51,683 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 22:55:51,683 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [734864145]
[2023-12-25 22:55:51,683 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 22:55:51,683 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [748861441]
[2023-12-25 22:55:51,683 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [748861441] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 22:55:51,683 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 22:55:51,684 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-12-25 22:55:51,684 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1139219969]
[2023-12-25 22:55:51,684 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 22:55:51,686 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-12-25 22:55:51,686 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 22:55:51,688 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-12-25 22:55:51,688 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-12-25 22:55:51,689 INFO  L87              Difference]: Start difference. First operand 7978 states and 13210 transitions. Second operand  has 7 states, 7 states have (on average 675.2857142857143) internal successors, (4727), 7 states have internal predecessors, (4727), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:55:52,085 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 22:55:52,085 INFO  L93              Difference]: Finished difference Result 21755 states and 36000 transitions.
[2023-12-25 22:55:52,085 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. 
[2023-12-25 22:55:52,086 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 675.2857142857143) internal successors, (4727), 7 states have internal predecessors, (4727), 0 states have call successors, (0), 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 5106
[2023-12-25 22:55:52,089 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 22:55:52,103 INFO  L225             Difference]: With dead ends: 21755
[2023-12-25 22:55:52,103 INFO  L226             Difference]: Without dead ends: 14683
[2023-12-25 22:55:52,110 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5114 GetRequests, 5103 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156
[2023-12-25 22:55:52,110 INFO  L413           NwaCegarLoop]: 12485 mSDtfsCounter, 31824 mSDsluCounter, 48811 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31824 SdHoareTripleChecker+Valid, 61296 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-12-25 22:55:52,110 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [31824 Valid, 61296 Invalid, 47 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-12-25 22:55:52,119 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14683 states.
[2023-12-25 22:55:52,185 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14683 to 7978.
[2023-12-25 22:55:52,191 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7978 states, 7977 states have (on average 1.656011031716184) internal successors, (13210), 7977 states have internal predecessors, (13210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:55:52,198 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7978 states to 7978 states and 13210 transitions.
[2023-12-25 22:55:52,198 INFO  L78                 Accepts]: Start accepts. Automaton has 7978 states and 13210 transitions. Word has length 5106
[2023-12-25 22:55:52,200 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 22:55:52,201 INFO  L495      AbstractCegarLoop]: Abstraction has 7978 states and 13210 transitions.
[2023-12-25 22:55:52,201 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 675.2857142857143) internal successors, (4727), 7 states have internal predecessors, (4727), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:55:52,201 INFO  L276                IsEmpty]: Start isEmpty. Operand 7978 states and 13210 transitions.
[2023-12-25 22:55:52,330 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5108
[2023-12-25 22:55:52,331 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 22:55:52,332 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-12-25 22:55:52,404 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (112)] Ended with exit code 0
[2023-12-25 22:55:52,548 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 112 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable113
[2023-12-25 22:55:52,548 INFO  L420      AbstractCegarLoop]: === Iteration 115 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 22:55:52,549 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 22:55:52,549 INFO  L85        PathProgramCache]: Analyzing trace with hash 1497301614, now seen corresponding path program 1 times
[2023-12-25 22:55:52,549 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 22:55:52,549 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1055669883]
[2023-12-25 22:55:52,550 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:55:52,550 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 22:55:52,877 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 22:55:52,877 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1313893555]
[2023-12-25 22:55:52,878 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:55:52,879 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 22:55:52,879 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 22:55:52,880 INFO  L229       MonitoredProcess]: Starting monitored process 113 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-25 22:55:52,882 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (113)] Waiting until timeout for monitored process
[2023-12-25 22:55:58,228 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 22:55:58,370 INFO  L262         TraceCheckSpWp]: Trace formula consists of 22702 conjuncts, 21 conjunts are in the unsatisfiable core
[2023-12-25 22:55:58,423 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 22:55:58,616 INFO  L134       CoverageAnalysis]: Checked inductivity of 572 backedges. 122 proven. 0 refuted. 0 times theorem prover too weak. 450 trivial. 0 not checked.
[2023-12-25 22:55:58,616 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 22:55:58,616 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 22:55:58,616 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1055669883]
[2023-12-25 22:55:58,616 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 22:55:58,616 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1313893555]
[2023-12-25 22:55:58,616 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1313893555] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 22:55:58,616 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 22:55:58,616 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8
[2023-12-25 22:55:58,617 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [118175094]
[2023-12-25 22:55:58,617 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 22:55:58,619 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 8 states
[2023-12-25 22:55:58,619 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 22:55:58,620 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2023-12-25 22:55:58,621 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56
[2023-12-25 22:55:58,621 INFO  L87              Difference]: Start difference. First operand 7978 states and 13210 transitions. Second operand  has 8 states, 8 states have (on average 590.75) internal successors, (4726), 8 states have internal predecessors, (4726), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:55:59,050 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 22:55:59,050 INFO  L93              Difference]: Finished difference Result 21755 states and 36000 transitions.
[2023-12-25 22:55:59,050 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. 
[2023-12-25 22:55:59,051 INFO  L78                 Accepts]: Start accepts. Automaton has  has 8 states, 8 states have (on average 590.75) internal successors, (4726), 8 states have internal predecessors, (4726), 0 states have call successors, (0), 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 5107
[2023-12-25 22:55:59,054 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 22:55:59,064 INFO  L225             Difference]: With dead ends: 21755
[2023-12-25 22:55:59,065 INFO  L226             Difference]: Without dead ends: 14689
[2023-12-25 22:55:59,069 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5115 GetRequests, 5103 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182
[2023-12-25 22:55:59,069 INFO  L413           NwaCegarLoop]: 12495 mSDtfsCounter, 31820 mSDsluCounter, 61327 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31820 SdHoareTripleChecker+Valid, 73822 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-12-25 22:55:59,069 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [31820 Valid, 73822 Invalid, 63 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-12-25 22:55:59,077 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14689 states.
[2023-12-25 22:55:59,139 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14689 to 7978.
[2023-12-25 22:55:59,145 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7978 states, 7977 states have (on average 1.656011031716184) internal successors, (13210), 7977 states have internal predecessors, (13210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:55:59,151 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7978 states to 7978 states and 13210 transitions.
[2023-12-25 22:55:59,151 INFO  L78                 Accepts]: Start accepts. Automaton has 7978 states and 13210 transitions. Word has length 5107
[2023-12-25 22:55:59,154 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 22:55:59,154 INFO  L495      AbstractCegarLoop]: Abstraction has 7978 states and 13210 transitions.
[2023-12-25 22:55:59,154 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 8 states, 8 states have (on average 590.75) internal successors, (4726), 8 states have internal predecessors, (4726), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:55:59,154 INFO  L276                IsEmpty]: Start isEmpty. Operand 7978 states and 13210 transitions.
[2023-12-25 22:55:59,280 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5109
[2023-12-25 22:55:59,280 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 22:55:59,281 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-12-25 22:55:59,347 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (113)] Forceful destruction successful, exit code 0
[2023-12-25 22:55:59,496 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 113 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable114
[2023-12-25 22:55:59,496 INFO  L420      AbstractCegarLoop]: === Iteration 116 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 22:55:59,497 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 22:55:59,497 INFO  L85        PathProgramCache]: Analyzing trace with hash -1691563222, now seen corresponding path program 1 times
[2023-12-25 22:55:59,497 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 22:55:59,497 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [674141695]
[2023-12-25 22:55:59,498 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:55:59,498 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 22:55:59,936 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 22:55:59,936 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [488157783]
[2023-12-25 22:55:59,937 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:55:59,937 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 22:55:59,937 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 22:55:59,938 INFO  L229       MonitoredProcess]: Starting monitored process 114 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-25 22:55:59,948 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (114)] Waiting until timeout for monitored process
[2023-12-25 22:56:04,997 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 22:56:05,131 INFO  L262         TraceCheckSpWp]: Trace formula consists of 22705 conjuncts, 17 conjunts are in the unsatisfiable core
[2023-12-25 22:56:05,174 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 22:56:05,348 INFO  L134       CoverageAnalysis]: Checked inductivity of 572 backedges. 118 proven. 0 refuted. 0 times theorem prover too weak. 454 trivial. 0 not checked.
[2023-12-25 22:56:05,349 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 22:56:05,349 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 22:56:05,349 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [674141695]
[2023-12-25 22:56:05,349 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 22:56:05,349 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [488157783]
[2023-12-25 22:56:05,349 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [488157783] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 22:56:05,349 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 22:56:05,349 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-12-25 22:56:05,349 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1718422064]
[2023-12-25 22:56:05,349 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 22:56:05,351 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-12-25 22:56:05,351 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 22:56:05,353 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-12-25 22:56:05,353 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-12-25 22:56:05,353 INFO  L87              Difference]: Start difference. First operand 7978 states and 13210 transitions. Second operand  has 7 states, 7 states have (on average 675.0) internal successors, (4725), 7 states have internal predecessors, (4725), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:56:05,666 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 22:56:05,666 INFO  L93              Difference]: Finished difference Result 21755 states and 36000 transitions.
[2023-12-25 22:56:05,666 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. 
[2023-12-25 22:56:05,667 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 675.0) internal successors, (4725), 7 states have internal predecessors, (4725), 0 states have call successors, (0), 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 5108
[2023-12-25 22:56:05,670 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 22:56:05,683 INFO  L225             Difference]: With dead ends: 21755
[2023-12-25 22:56:05,684 INFO  L226             Difference]: Without dead ends: 14695
[2023-12-25 22:56:05,691 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5116 GetRequests, 5105 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156
[2023-12-25 22:56:05,691 INFO  L413           NwaCegarLoop]: 12505 mSDtfsCounter, 31816 mSDsluCounter, 48871 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31816 SdHoareTripleChecker+Valid, 61376 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-12-25 22:56:05,691 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [31816 Valid, 61376 Invalid, 47 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-12-25 22:56:05,700 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14695 states.
[2023-12-25 22:56:05,768 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14695 to 7978.
[2023-12-25 22:56:05,774 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7978 states, 7977 states have (on average 1.656011031716184) internal successors, (13210), 7977 states have internal predecessors, (13210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:56:05,781 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7978 states to 7978 states and 13210 transitions.
[2023-12-25 22:56:05,781 INFO  L78                 Accepts]: Start accepts. Automaton has 7978 states and 13210 transitions. Word has length 5108
[2023-12-25 22:56:05,783 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 22:56:05,783 INFO  L495      AbstractCegarLoop]: Abstraction has 7978 states and 13210 transitions.
[2023-12-25 22:56:05,784 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 675.0) internal successors, (4725), 7 states have internal predecessors, (4725), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:56:05,784 INFO  L276                IsEmpty]: Start isEmpty. Operand 7978 states and 13210 transitions.
[2023-12-25 22:56:05,977 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5110
[2023-12-25 22:56:05,978 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 22:56:05,979 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]
[2023-12-25 22:56:06,064 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (114)] Forceful destruction successful, exit code 0
[2023-12-25 22:56:06,196 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115,114 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 22:56:06,197 INFO  L420      AbstractCegarLoop]: === Iteration 117 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 22:56:06,197 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 22:56:06,197 INFO  L85        PathProgramCache]: Analyzing trace with hash -799414226, now seen corresponding path program 1 times
[2023-12-25 22:56:06,197 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 22:56:06,197 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2044298831]
[2023-12-25 22:56:06,198 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:56:06,198 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 22:56:06,507 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 22:56:06,507 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1610244364]
[2023-12-25 22:56:06,508 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:56:06,508 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 22:56:06,508 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 22:56:06,510 INFO  L229       MonitoredProcess]: Starting monitored process 115 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-25 22:56:06,512 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (115)] Waiting until timeout for monitored process
[2023-12-25 22:56:11,593 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 22:56:11,734 INFO  L262         TraceCheckSpWp]: Trace formula consists of 22708 conjuncts, 21 conjunts are in the unsatisfiable core
[2023-12-25 22:56:11,784 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 22:56:11,987 INFO  L134       CoverageAnalysis]: Checked inductivity of 572 backedges. 114 proven. 0 refuted. 0 times theorem prover too weak. 458 trivial. 0 not checked.
[2023-12-25 22:56:11,988 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 22:56:11,988 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 22:56:11,988 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2044298831]
[2023-12-25 22:56:11,988 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 22:56:11,988 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1610244364]
[2023-12-25 22:56:11,988 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1610244364] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 22:56:11,988 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 22:56:11,988 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8
[2023-12-25 22:56:11,988 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [646997369]
[2023-12-25 22:56:11,988 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 22:56:11,991 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 8 states
[2023-12-25 22:56:11,991 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 22:56:11,993 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2023-12-25 22:56:11,993 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56
[2023-12-25 22:56:11,994 INFO  L87              Difference]: Start difference. First operand 7978 states and 13210 transitions. Second operand  has 8 states, 8 states have (on average 590.5) internal successors, (4724), 8 states have internal predecessors, (4724), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:56:12,426 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 22:56:12,426 INFO  L93              Difference]: Finished difference Result 21755 states and 36000 transitions.
[2023-12-25 22:56:12,426 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. 
[2023-12-25 22:56:12,427 INFO  L78                 Accepts]: Start accepts. Automaton has  has 8 states, 8 states have (on average 590.5) internal successors, (4724), 8 states have internal predecessors, (4724), 0 states have call successors, (0), 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 5109
[2023-12-25 22:56:12,430 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 22:56:12,442 INFO  L225             Difference]: With dead ends: 21755
[2023-12-25 22:56:12,442 INFO  L226             Difference]: Without dead ends: 14701
[2023-12-25 22:56:12,449 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5117 GetRequests, 5105 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182
[2023-12-25 22:56:12,449 INFO  L413           NwaCegarLoop]: 12515 mSDtfsCounter, 31812 mSDsluCounter, 59759 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31812 SdHoareTripleChecker+Valid, 72274 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-12-25 22:56:12,449 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [31812 Valid, 72274 Invalid, 52 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [1 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-12-25 22:56:12,458 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14701 states.
[2023-12-25 22:56:12,525 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14701 to 7978.
[2023-12-25 22:56:12,531 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7978 states, 7977 states have (on average 1.656011031716184) internal successors, (13210), 7977 states have internal predecessors, (13210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:56:12,538 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7978 states to 7978 states and 13210 transitions.
[2023-12-25 22:56:12,538 INFO  L78                 Accepts]: Start accepts. Automaton has 7978 states and 13210 transitions. Word has length 5109
[2023-12-25 22:56:12,540 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 22:56:12,540 INFO  L495      AbstractCegarLoop]: Abstraction has 7978 states and 13210 transitions.
[2023-12-25 22:56:12,541 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 8 states, 8 states have (on average 590.5) internal successors, (4724), 8 states have internal predecessors, (4724), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:56:12,541 INFO  L276                IsEmpty]: Start isEmpty. Operand 7978 states and 13210 transitions.
[2023-12-25 22:56:12,668 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5111
[2023-12-25 22:56:12,668 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 22:56:12,669 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]
[2023-12-25 22:56:12,740 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (115)] Ended with exit code 0
[2023-12-25 22:56:12,884 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116,115 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 22:56:12,884 INFO  L420      AbstractCegarLoop]: === Iteration 118 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 22:56:12,885 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 22:56:12,885 INFO  L85        PathProgramCache]: Analyzing trace with hash -147411282, now seen corresponding path program 1 times
[2023-12-25 22:56:12,885 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 22:56:12,885 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [217901643]
[2023-12-25 22:56:12,886 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:56:12,886 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 22:56:13,262 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 22:56:13,262 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2037019805]
[2023-12-25 22:56:13,263 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:56:13,263 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 22:56:13,263 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 22:56:13,264 INFO  L229       MonitoredProcess]: Starting monitored process 116 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-25 22:56:13,266 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (116)] Waiting until timeout for monitored process
[2023-12-25 22:56:18,163 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 22:56:18,302 INFO  L262         TraceCheckSpWp]: Trace formula consists of 22711 conjuncts, 17 conjunts are in the unsatisfiable core
[2023-12-25 22:56:18,352 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 22:56:18,769 INFO  L134       CoverageAnalysis]: Checked inductivity of 572 backedges. 110 proven. 0 refuted. 0 times theorem prover too weak. 462 trivial. 0 not checked.
[2023-12-25 22:56:18,769 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 22:56:18,769 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 22:56:18,769 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [217901643]
[2023-12-25 22:56:18,769 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 22:56:18,769 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2037019805]
[2023-12-25 22:56:18,769 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [2037019805] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 22:56:18,769 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 22:56:18,770 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-12-25 22:56:18,770 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [527655425]
[2023-12-25 22:56:18,770 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 22:56:18,772 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-12-25 22:56:18,772 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 22:56:18,774 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-12-25 22:56:18,774 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-12-25 22:56:18,774 INFO  L87              Difference]: Start difference. First operand 7978 states and 13210 transitions. Second operand  has 7 states, 7 states have (on average 674.7142857142857) internal successors, (4723), 7 states have internal predecessors, (4723), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:56:19,100 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 22:56:19,100 INFO  L93              Difference]: Finished difference Result 21755 states and 36000 transitions.
[2023-12-25 22:56:19,101 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. 
[2023-12-25 22:56:19,102 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 674.7142857142857) internal successors, (4723), 7 states have internal predecessors, (4723), 0 states have call successors, (0), 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 5110
[2023-12-25 22:56:19,105 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 22:56:19,117 INFO  L225             Difference]: With dead ends: 21755
[2023-12-25 22:56:19,117 INFO  L226             Difference]: Without dead ends: 14707
[2023-12-25 22:56:19,125 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5118 GetRequests, 5107 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156
[2023-12-25 22:56:19,125 INFO  L413           NwaCegarLoop]: 12525 mSDtfsCounter, 31808 mSDsluCounter, 48931 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31808 SdHoareTripleChecker+Valid, 61456 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-12-25 22:56:19,125 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [31808 Valid, 61456 Invalid, 47 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-12-25 22:56:19,134 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14707 states.
[2023-12-25 22:56:19,205 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14707 to 7978.
[2023-12-25 22:56:19,211 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7978 states, 7977 states have (on average 1.656011031716184) internal successors, (13210), 7977 states have internal predecessors, (13210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:56:19,218 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7978 states to 7978 states and 13210 transitions.
[2023-12-25 22:56:19,218 INFO  L78                 Accepts]: Start accepts. Automaton has 7978 states and 13210 transitions. Word has length 5110
[2023-12-25 22:56:19,220 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 22:56:19,220 INFO  L495      AbstractCegarLoop]: Abstraction has 7978 states and 13210 transitions.
[2023-12-25 22:56:19,221 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 674.7142857142857) internal successors, (4723), 7 states have internal predecessors, (4723), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:56:19,221 INFO  L276                IsEmpty]: Start isEmpty. Operand 7978 states and 13210 transitions.
[2023-12-25 22:56:19,349 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5112
[2023-12-25 22:56:19,349 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 22:56:19,350 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]
[2023-12-25 22:56:19,413 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (116)] Ended with exit code 0
[2023-12-25 22:56:19,575 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 116 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable117
[2023-12-25 22:56:19,575 INFO  L420      AbstractCegarLoop]: === Iteration 119 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 22:56:19,575 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 22:56:19,576 INFO  L85        PathProgramCache]: Analyzing trace with hash 408245870, now seen corresponding path program 1 times
[2023-12-25 22:56:19,576 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 22:56:19,576 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1364030615]
[2023-12-25 22:56:19,576 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:56:19,576 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 22:56:19,928 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 22:56:19,928 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [388638183]
[2023-12-25 22:56:19,929 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:56:19,929 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 22:56:19,929 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 22:56:19,930 INFO  L229       MonitoredProcess]: Starting monitored process 117 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-25 22:56:19,931 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (117)] Waiting until timeout for monitored process
[2023-12-25 22:56:25,124 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 22:56:25,275 INFO  L262         TraceCheckSpWp]: Trace formula consists of 22714 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-12-25 22:56:25,333 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 22:56:25,683 INFO  L134       CoverageAnalysis]: Checked inductivity of 572 backedges. 106 proven. 0 refuted. 0 times theorem prover too weak. 466 trivial. 0 not checked.
[2023-12-25 22:56:25,683 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 22:56:25,683 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 22:56:25,683 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1364030615]
[2023-12-25 22:56:25,683 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 22:56:25,683 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [388638183]
[2023-12-25 22:56:25,683 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [388638183] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 22:56:25,683 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 22:56:25,684 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8
[2023-12-25 22:56:25,684 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [935940855]
[2023-12-25 22:56:25,684 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 22:56:25,686 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 8 states
[2023-12-25 22:56:25,686 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 22:56:25,688 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2023-12-25 22:56:25,688 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56
[2023-12-25 22:56:25,688 INFO  L87              Difference]: Start difference. First operand 7978 states and 13210 transitions. Second operand  has 8 states, 8 states have (on average 590.25) internal successors, (4722), 8 states have internal predecessors, (4722), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:56:26,056 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 22:56:26,056 INFO  L93              Difference]: Finished difference Result 21755 states and 36000 transitions.
[2023-12-25 22:56:26,056 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. 
[2023-12-25 22:56:26,060 INFO  L78                 Accepts]: Start accepts. Automaton has  has 8 states, 8 states have (on average 590.25) internal successors, (4722), 8 states have internal predecessors, (4722), 0 states have call successors, (0), 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 5111
[2023-12-25 22:56:26,063 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 22:56:26,079 INFO  L225             Difference]: With dead ends: 21755
[2023-12-25 22:56:26,079 INFO  L226             Difference]: Without dead ends: 14713
[2023-12-25 22:56:26,088 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5119 GetRequests, 5107 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182
[2023-12-25 22:56:26,088 INFO  L413           NwaCegarLoop]: 12535 mSDtfsCounter, 31804 mSDsluCounter, 59825 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31804 SdHoareTripleChecker+Valid, 72360 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-12-25 22:56:26,088 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [31804 Valid, 72360 Invalid, 52 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-12-25 22:56:26,100 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14713 states.
[2023-12-25 22:56:26,172 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14713 to 7978.
[2023-12-25 22:56:26,179 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7978 states, 7977 states have (on average 1.656011031716184) internal successors, (13210), 7977 states have internal predecessors, (13210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:56:26,186 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7978 states to 7978 states and 13210 transitions.
[2023-12-25 22:56:26,186 INFO  L78                 Accepts]: Start accepts. Automaton has 7978 states and 13210 transitions. Word has length 5111
[2023-12-25 22:56:26,188 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 22:56:26,188 INFO  L495      AbstractCegarLoop]: Abstraction has 7978 states and 13210 transitions.
[2023-12-25 22:56:26,189 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 8 states, 8 states have (on average 590.25) internal successors, (4722), 8 states have internal predecessors, (4722), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:56:26,189 INFO  L276                IsEmpty]: Start isEmpty. Operand 7978 states and 13210 transitions.
[2023-12-25 22:56:26,318 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5113
[2023-12-25 22:56:26,318 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 22:56:26,319 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-12-25 22:56:26,384 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (117)] Forceful destruction successful, exit code 0
[2023-12-25 22:56:26,533 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable118,117 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 22:56:26,534 INFO  L420      AbstractCegarLoop]: === Iteration 120 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 22:56:26,534 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 22:56:26,534 INFO  L85        PathProgramCache]: Analyzing trace with hash -782950734, now seen corresponding path program 1 times
[2023-12-25 22:56:26,534 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 22:56:26,534 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2125051136]
[2023-12-25 22:56:26,535 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:56:26,535 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 22:56:26,919 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 22:56:26,919 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [422957475]
[2023-12-25 22:56:26,920 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:56:26,921 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 22:56:26,921 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 22:56:26,922 INFO  L229       MonitoredProcess]: Starting monitored process 118 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-25 22:56:26,923 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (118)] Waiting until timeout for monitored process
[2023-12-25 22:56:31,736 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 22:56:31,877 INFO  L262         TraceCheckSpWp]: Trace formula consists of 22717 conjuncts, 17 conjunts are in the unsatisfiable core
[2023-12-25 22:56:31,927 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 22:56:32,106 INFO  L134       CoverageAnalysis]: Checked inductivity of 572 backedges. 102 proven. 0 refuted. 0 times theorem prover too weak. 470 trivial. 0 not checked.
[2023-12-25 22:56:32,106 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 22:56:32,106 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 22:56:32,106 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2125051136]
[2023-12-25 22:56:32,106 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 22:56:32,106 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [422957475]
[2023-12-25 22:56:32,106 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [422957475] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 22:56:32,106 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 22:56:32,107 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-12-25 22:56:32,107 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1179495337]
[2023-12-25 22:56:32,107 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 22:56:32,109 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-12-25 22:56:32,109 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 22:56:32,111 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-12-25 22:56:32,111 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-12-25 22:56:32,111 INFO  L87              Difference]: Start difference. First operand 7978 states and 13210 transitions. Second operand  has 7 states, 7 states have (on average 674.4285714285714) internal successors, (4721), 7 states have internal predecessors, (4721), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:56:32,517 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 22:56:32,517 INFO  L93              Difference]: Finished difference Result 21755 states and 36000 transitions.
[2023-12-25 22:56:32,517 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. 
[2023-12-25 22:56:32,518 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 674.4285714285714) internal successors, (4721), 7 states have internal predecessors, (4721), 0 states have call successors, (0), 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 5112
[2023-12-25 22:56:32,521 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 22:56:32,533 INFO  L225             Difference]: With dead ends: 21755
[2023-12-25 22:56:32,533 INFO  L226             Difference]: Without dead ends: 14719
[2023-12-25 22:56:32,539 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5120 GetRequests, 5109 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156
[2023-12-25 22:56:32,539 INFO  L413           NwaCegarLoop]: 12545 mSDtfsCounter, 31800 mSDsluCounter, 48991 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31800 SdHoareTripleChecker+Valid, 61536 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-12-25 22:56:32,539 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [31800 Valid, 61536 Invalid, 47 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [0 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-12-25 22:56:32,548 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14719 states.
[2023-12-25 22:56:32,619 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14719 to 7978.
[2023-12-25 22:56:32,626 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7978 states, 7977 states have (on average 1.656011031716184) internal successors, (13210), 7977 states have internal predecessors, (13210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:56:32,634 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7978 states to 7978 states and 13210 transitions.
[2023-12-25 22:56:32,634 INFO  L78                 Accepts]: Start accepts. Automaton has 7978 states and 13210 transitions. Word has length 5112
[2023-12-25 22:56:32,636 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 22:56:32,636 INFO  L495      AbstractCegarLoop]: Abstraction has 7978 states and 13210 transitions.
[2023-12-25 22:56:32,637 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 674.4285714285714) internal successors, (4721), 7 states have internal predecessors, (4721), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:56:32,637 INFO  L276                IsEmpty]: Start isEmpty. Operand 7978 states and 13210 transitions.
[2023-12-25 22:56:32,763 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5114
[2023-12-25 22:56:32,764 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 22:56:32,765 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]
[2023-12-25 22:56:32,825 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (118)] Ended with exit code 0
[2023-12-25 22:56:32,984 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119,118 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 22:56:32,984 INFO  L420      AbstractCegarLoop]: === Iteration 121 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 22:56:32,985 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 22:56:32,985 INFO  L85        PathProgramCache]: Analyzing trace with hash -1418343122, now seen corresponding path program 1 times
[2023-12-25 22:56:32,985 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 22:56:32,985 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [767909514]
[2023-12-25 22:56:32,986 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:56:32,986 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 22:56:33,294 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 22:56:33,294 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1874141959]
[2023-12-25 22:56:33,295 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:56:33,295 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 22:56:33,295 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 22:56:33,296 INFO  L229       MonitoredProcess]: Starting monitored process 119 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-25 22:56:33,298 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (119)] Waiting until timeout for monitored process
[2023-12-25 22:56:38,368 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 22:56:38,522 INFO  L262         TraceCheckSpWp]: Trace formula consists of 22720 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-12-25 22:56:38,575 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 22:56:38,750 INFO  L134       CoverageAnalysis]: Checked inductivity of 572 backedges. 96 proven. 0 refuted. 0 times theorem prover too weak. 476 trivial. 0 not checked.
[2023-12-25 22:56:38,750 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 22:56:38,750 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 22:56:38,750 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [767909514]
[2023-12-25 22:56:38,750 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 22:56:38,750 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1874141959]
[2023-12-25 22:56:38,750 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1874141959] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 22:56:38,751 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 22:56:38,751 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8
[2023-12-25 22:56:38,751 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1774741236]
[2023-12-25 22:56:38,751 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 22:56:38,753 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 8 states
[2023-12-25 22:56:38,753 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 22:56:38,755 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2023-12-25 22:56:38,755 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56
[2023-12-25 22:56:38,755 INFO  L87              Difference]: Start difference. First operand 7978 states and 13210 transitions. Second operand  has 8 states, 8 states have (on average 589.875) internal successors, (4719), 8 states have internal predecessors, (4719), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:56:39,106 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 22:56:39,106 INFO  L93              Difference]: Finished difference Result 21755 states and 36000 transitions.
[2023-12-25 22:56:39,107 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. 
[2023-12-25 22:56:39,108 INFO  L78                 Accepts]: Start accepts. Automaton has  has 8 states, 8 states have (on average 589.875) internal successors, (4719), 8 states have internal predecessors, (4719), 0 states have call successors, (0), 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 5113
[2023-12-25 22:56:39,111 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 22:56:39,124 INFO  L225             Difference]: With dead ends: 21755
[2023-12-25 22:56:39,124 INFO  L226             Difference]: Without dead ends: 14728
[2023-12-25 22:56:39,131 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5121 GetRequests, 5109 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182
[2023-12-25 22:56:39,132 INFO  L413           NwaCegarLoop]: 12560 mSDtfsCounter, 31797 mSDsluCounter, 61587 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31797 SdHoareTripleChecker+Valid, 74147 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-12-25 22:56:39,132 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [31797 Valid, 74147 Invalid, 63 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-12-25 22:56:39,141 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14728 states.
[2023-12-25 22:56:39,209 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14728 to 7978.
[2023-12-25 22:56:39,215 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7978 states, 7977 states have (on average 1.656011031716184) internal successors, (13210), 7977 states have internal predecessors, (13210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:56:39,221 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7978 states to 7978 states and 13210 transitions.
[2023-12-25 22:56:39,221 INFO  L78                 Accepts]: Start accepts. Automaton has 7978 states and 13210 transitions. Word has length 5113
[2023-12-25 22:56:39,223 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 22:56:39,223 INFO  L495      AbstractCegarLoop]: Abstraction has 7978 states and 13210 transitions.
[2023-12-25 22:56:39,224 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 8 states, 8 states have (on average 589.875) internal successors, (4719), 8 states have internal predecessors, (4719), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:56:39,224 INFO  L276                IsEmpty]: Start isEmpty. Operand 7978 states and 13210 transitions.
[2023-12-25 22:56:39,430 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5115
[2023-12-25 22:56:39,430 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 22:56:39,431 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]
[2023-12-25 22:56:39,492 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (119)] Ended with exit code 0
[2023-12-25 22:56:39,656 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120,119 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 22:56:39,656 INFO  L420      AbstractCegarLoop]: === Iteration 122 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 22:56:39,657 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 22:56:39,657 INFO  L85        PathProgramCache]: Analyzing trace with hash 1915141916, now seen corresponding path program 1 times
[2023-12-25 22:56:39,657 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 22:56:39,657 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1545888520]
[2023-12-25 22:56:39,658 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:56:39,658 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 22:56:39,957 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 22:56:39,958 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1785456083]
[2023-12-25 22:56:39,959 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:56:39,959 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 22:56:39,959 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 22:56:39,961 INFO  L229       MonitoredProcess]: Starting monitored process 120 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-25 22:56:39,962 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (120)] Waiting until timeout for monitored process
[2023-12-25 22:56:44,727 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 22:56:44,870 INFO  L262         TraceCheckSpWp]: Trace formula consists of 22723 conjuncts, 21 conjunts are in the unsatisfiable core
[2023-12-25 22:56:44,921 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 22:56:45,095 INFO  L134       CoverageAnalysis]: Checked inductivity of 572 backedges. 92 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked.
[2023-12-25 22:56:45,095 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 22:56:45,096 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 22:56:45,096 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1545888520]
[2023-12-25 22:56:45,096 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 22:56:45,096 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1785456083]
[2023-12-25 22:56:45,096 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1785456083] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 22:56:45,096 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 22:56:45,096 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8
[2023-12-25 22:56:45,096 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [19431142]
[2023-12-25 22:56:45,096 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 22:56:45,098 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 8 states
[2023-12-25 22:56:45,099 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 22:56:45,100 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2023-12-25 22:56:45,100 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56
[2023-12-25 22:56:45,101 INFO  L87              Difference]: Start difference. First operand 7978 states and 13210 transitions. Second operand  has 8 states, 8 states have (on average 589.75) internal successors, (4718), 8 states have internal predecessors, (4718), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:56:45,600 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 22:56:45,601 INFO  L93              Difference]: Finished difference Result 21755 states and 36000 transitions.
[2023-12-25 22:56:45,601 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. 
[2023-12-25 22:56:45,602 INFO  L78                 Accepts]: Start accepts. Automaton has  has 8 states, 8 states have (on average 589.75) internal successors, (4718), 8 states have internal predecessors, (4718), 0 states have call successors, (0), 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 5114
[2023-12-25 22:56:45,605 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 22:56:45,618 INFO  L225             Difference]: With dead ends: 21755
[2023-12-25 22:56:45,618 INFO  L226             Difference]: Without dead ends: 14734
[2023-12-25 22:56:45,625 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5122 GetRequests, 5110 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182
[2023-12-25 22:56:45,626 INFO  L413           NwaCegarLoop]: 12570 mSDtfsCounter, 31793 mSDsluCounter, 61627 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31793 SdHoareTripleChecker+Valid, 74197 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-12-25 22:56:45,626 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [31793 Valid, 74197 Invalid, 63 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-12-25 22:56:45,636 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14734 states.
[2023-12-25 22:56:45,708 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14734 to 7978.
[2023-12-25 22:56:45,714 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7978 states, 7977 states have (on average 1.656011031716184) internal successors, (13210), 7977 states have internal predecessors, (13210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:56:45,721 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7978 states to 7978 states and 13210 transitions.
[2023-12-25 22:56:45,721 INFO  L78                 Accepts]: Start accepts. Automaton has 7978 states and 13210 transitions. Word has length 5114
[2023-12-25 22:56:45,724 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 22:56:45,724 INFO  L495      AbstractCegarLoop]: Abstraction has 7978 states and 13210 transitions.
[2023-12-25 22:56:45,724 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 8 states, 8 states have (on average 589.75) internal successors, (4718), 8 states have internal predecessors, (4718), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:56:45,724 INFO  L276                IsEmpty]: Start isEmpty. Operand 7978 states and 13210 transitions.
[2023-12-25 22:56:45,853 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5116
[2023-12-25 22:56:45,853 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 22:56:45,854 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]
[2023-12-25 22:56:45,920 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (120)] Forceful destruction successful, exit code 0
[2023-12-25 22:56:46,068 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121,120 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 22:56:46,068 INFO  L420      AbstractCegarLoop]: === Iteration 123 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 22:56:46,069 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 22:56:46,069 INFO  L85        PathProgramCache]: Analyzing trace with hash 1356565612, now seen corresponding path program 1 times
[2023-12-25 22:56:46,069 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 22:56:46,069 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1364984359]
[2023-12-25 22:56:46,070 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:56:46,070 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 22:56:46,381 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 22:56:46,381 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1888811274]
[2023-12-25 22:56:46,382 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:56:46,382 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 22:56:46,382 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 22:56:46,383 INFO  L229       MonitoredProcess]: Starting monitored process 121 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-25 22:56:46,387 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (121)] Waiting until timeout for monitored process
[2023-12-25 22:56:51,337 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 22:56:51,476 INFO  L262         TraceCheckSpWp]: Trace formula consists of 22727 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-12-25 22:56:51,524 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 22:56:51,708 INFO  L134       CoverageAnalysis]: Checked inductivity of 572 backedges. 88 proven. 0 refuted. 0 times theorem prover too weak. 484 trivial. 0 not checked.
[2023-12-25 22:56:51,708 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 22:56:51,708 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 22:56:51,708 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1364984359]
[2023-12-25 22:56:51,708 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 22:56:51,708 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1888811274]
[2023-12-25 22:56:51,708 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1888811274] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 22:56:51,708 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 22:56:51,709 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8
[2023-12-25 22:56:51,709 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [573536808]
[2023-12-25 22:56:51,709 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 22:56:51,711 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 8 states
[2023-12-25 22:56:51,711 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 22:56:51,713 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2023-12-25 22:56:51,713 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56
[2023-12-25 22:56:51,713 INFO  L87              Difference]: Start difference. First operand 7978 states and 13210 transitions. Second operand  has 8 states, 8 states have (on average 589.625) internal successors, (4717), 8 states have internal predecessors, (4717), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:56:52,057 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 22:56:52,058 INFO  L93              Difference]: Finished difference Result 21755 states and 36000 transitions.
[2023-12-25 22:56:52,058 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. 
[2023-12-25 22:56:52,059 INFO  L78                 Accepts]: Start accepts. Automaton has  has 8 states, 8 states have (on average 589.625) internal successors, (4717), 8 states have internal predecessors, (4717), 0 states have call successors, (0), 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 5115
[2023-12-25 22:56:52,062 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 22:56:52,076 INFO  L225             Difference]: With dead ends: 21755
[2023-12-25 22:56:52,076 INFO  L226             Difference]: Without dead ends: 14740
[2023-12-25 22:56:52,083 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5123 GetRequests, 5111 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182
[2023-12-25 22:56:52,084 INFO  L413           NwaCegarLoop]: 12580 mSDtfsCounter, 31789 mSDsluCounter, 59975 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31789 SdHoareTripleChecker+Valid, 72555 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-12-25 22:56:52,084 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [31789 Valid, 72555 Invalid, 52 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-12-25 22:56:52,094 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14740 states.
[2023-12-25 22:56:52,172 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14740 to 7978.
[2023-12-25 22:56:52,179 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7978 states, 7977 states have (on average 1.656011031716184) internal successors, (13210), 7977 states have internal predecessors, (13210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:56:52,186 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7978 states to 7978 states and 13210 transitions.
[2023-12-25 22:56:52,186 INFO  L78                 Accepts]: Start accepts. Automaton has 7978 states and 13210 transitions. Word has length 5115
[2023-12-25 22:56:52,189 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 22:56:52,189 INFO  L495      AbstractCegarLoop]: Abstraction has 7978 states and 13210 transitions.
[2023-12-25 22:56:52,190 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 8 states, 8 states have (on average 589.625) internal successors, (4717), 8 states have internal predecessors, (4717), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:56:52,190 INFO  L276                IsEmpty]: Start isEmpty. Operand 7978 states and 13210 transitions.
[2023-12-25 22:56:52,412 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5117
[2023-12-25 22:56:52,412 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 22:56:52,414 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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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-12-25 22:56:52,485 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (121)] Forceful destruction successful, exit code 0
[2023-12-25 22:56:52,635 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 121 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable122
[2023-12-25 22:56:52,635 INFO  L420      AbstractCegarLoop]: === Iteration 124 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 22:56:52,636 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 22:56:52,636 INFO  L85        PathProgramCache]: Analyzing trace with hash 814600094, now seen corresponding path program 1 times
[2023-12-25 22:56:52,636 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 22:56:52,636 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1599327352]
[2023-12-25 22:56:52,637 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:56:52,637 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 22:56:52,950 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 22:56:52,950 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [705914533]
[2023-12-25 22:56:52,951 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:56:52,951 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 22:56:52,951 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 22:56:52,952 INFO  L229       MonitoredProcess]: Starting monitored process 122 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-25 22:56:52,977 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (122)] Waiting until timeout for monitored process
[2023-12-25 22:56:57,737 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 22:56:57,877 INFO  L262         TraceCheckSpWp]: Trace formula consists of 22730 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-12-25 22:56:57,927 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 22:56:58,112 INFO  L134       CoverageAnalysis]: Checked inductivity of 572 backedges. 84 proven. 0 refuted. 0 times theorem prover too weak. 488 trivial. 0 not checked.
[2023-12-25 22:56:58,112 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 22:56:58,112 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 22:56:58,112 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1599327352]
[2023-12-25 22:56:58,112 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 22:56:58,112 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [705914533]
[2023-12-25 22:56:58,112 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [705914533] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 22:56:58,112 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 22:56:58,112 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8
[2023-12-25 22:56:58,113 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [606765687]
[2023-12-25 22:56:58,113 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 22:56:58,115 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 8 states
[2023-12-25 22:56:58,115 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 22:56:58,116 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2023-12-25 22:56:58,116 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56
[2023-12-25 22:56:58,117 INFO  L87              Difference]: Start difference. First operand 7978 states and 13210 transitions. Second operand  has 8 states, 8 states have (on average 589.5) internal successors, (4716), 8 states have internal predecessors, (4716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:56:58,589 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 22:56:58,589 INFO  L93              Difference]: Finished difference Result 21755 states and 36000 transitions.
[2023-12-25 22:56:58,589 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. 
[2023-12-25 22:56:58,590 INFO  L78                 Accepts]: Start accepts. Automaton has  has 8 states, 8 states have (on average 589.5) internal successors, (4716), 8 states have internal predecessors, (4716), 0 states have call successors, (0), 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 5116
[2023-12-25 22:56:58,594 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 22:56:58,610 INFO  L225             Difference]: With dead ends: 21755
[2023-12-25 22:56:58,611 INFO  L226             Difference]: Without dead ends: 14746
[2023-12-25 22:56:58,618 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5124 GetRequests, 5112 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182
[2023-12-25 22:56:58,619 INFO  L413           NwaCegarLoop]: 12590 mSDtfsCounter, 31785 mSDsluCounter, 61707 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31785 SdHoareTripleChecker+Valid, 74297 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-12-25 22:56:58,619 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [31785 Valid, 74297 Invalid, 63 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-12-25 22:56:58,628 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14746 states.
[2023-12-25 22:56:58,708 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14746 to 7978.
[2023-12-25 22:56:58,716 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7978 states, 7977 states have (on average 1.656011031716184) internal successors, (13210), 7977 states have internal predecessors, (13210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:56:58,726 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7978 states to 7978 states and 13210 transitions.
[2023-12-25 22:56:58,726 INFO  L78                 Accepts]: Start accepts. Automaton has 7978 states and 13210 transitions. Word has length 5116
[2023-12-25 22:56:58,730 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 22:56:58,730 INFO  L495      AbstractCegarLoop]: Abstraction has 7978 states and 13210 transitions.
[2023-12-25 22:56:58,731 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 8 states, 8 states have (on average 589.5) internal successors, (4716), 8 states have internal predecessors, (4716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:56:58,731 INFO  L276                IsEmpty]: Start isEmpty. Operand 7978 states and 13210 transitions.
[2023-12-25 22:56:58,870 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5118
[2023-12-25 22:56:58,870 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 22:56:58,871 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-12-25 22:56:58,936 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (122)] Forceful destruction successful, exit code 0
[2023-12-25 22:56:59,096 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 122 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable123
[2023-12-25 22:56:59,098 INFO  L420      AbstractCegarLoop]: === Iteration 125 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 22:56:59,098 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 22:56:59,098 INFO  L85        PathProgramCache]: Analyzing trace with hash 769235370, now seen corresponding path program 1 times
[2023-12-25 22:56:59,098 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 22:56:59,098 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1942516951]
[2023-12-25 22:56:59,099 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:56:59,099 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 22:56:59,410 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 22:56:59,410 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2002540565]
[2023-12-25 22:56:59,411 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:56:59,411 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 22:56:59,411 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 22:56:59,412 INFO  L229       MonitoredProcess]: Starting monitored process 123 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-25 22:56:59,436 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (123)] Waiting until timeout for monitored process
[2023-12-25 22:57:04,598 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 22:57:04,750 INFO  L262         TraceCheckSpWp]: Trace formula consists of 22734 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-12-25 22:57:04,799 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 22:57:04,978 INFO  L134       CoverageAnalysis]: Checked inductivity of 572 backedges. 80 proven. 0 refuted. 0 times theorem prover too weak. 492 trivial. 0 not checked.
[2023-12-25 22:57:04,978 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 22:57:04,978 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 22:57:04,979 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1942516951]
[2023-12-25 22:57:04,979 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 22:57:04,979 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2002540565]
[2023-12-25 22:57:04,979 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [2002540565] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 22:57:04,979 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 22:57:04,979 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8
[2023-12-25 22:57:04,979 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1884214155]
[2023-12-25 22:57:04,979 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 22:57:04,982 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 8 states
[2023-12-25 22:57:04,982 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 22:57:04,983 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2023-12-25 22:57:04,983 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56
[2023-12-25 22:57:04,984 INFO  L87              Difference]: Start difference. First operand 7978 states and 13210 transitions. Second operand  has 8 states, 8 states have (on average 589.375) internal successors, (4715), 8 states have internal predecessors, (4715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:57:05,343 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 22:57:05,343 INFO  L93              Difference]: Finished difference Result 21755 states and 36000 transitions.
[2023-12-25 22:57:05,343 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. 
[2023-12-25 22:57:05,345 INFO  L78                 Accepts]: Start accepts. Automaton has  has 8 states, 8 states have (on average 589.375) internal successors, (4715), 8 states have internal predecessors, (4715), 0 states have call successors, (0), 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 5117
[2023-12-25 22:57:05,348 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 22:57:05,361 INFO  L225             Difference]: With dead ends: 21755
[2023-12-25 22:57:05,361 INFO  L226             Difference]: Without dead ends: 14752
[2023-12-25 22:57:05,368 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5125 GetRequests, 5113 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182
[2023-12-25 22:57:05,369 INFO  L413           NwaCegarLoop]: 12600 mSDtfsCounter, 31781 mSDsluCounter, 60041 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31781 SdHoareTripleChecker+Valid, 72641 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-12-25 22:57:05,369 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [31781 Valid, 72641 Invalid, 52 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-12-25 22:57:05,379 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14752 states.
[2023-12-25 22:57:05,446 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14752 to 7978.
[2023-12-25 22:57:05,453 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7978 states, 7977 states have (on average 1.656011031716184) internal successors, (13210), 7977 states have internal predecessors, (13210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:57:05,460 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7978 states to 7978 states and 13210 transitions.
[2023-12-25 22:57:05,460 INFO  L78                 Accepts]: Start accepts. Automaton has 7978 states and 13210 transitions. Word has length 5117
[2023-12-25 22:57:05,462 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 22:57:05,462 INFO  L495      AbstractCegarLoop]: Abstraction has 7978 states and 13210 transitions.
[2023-12-25 22:57:05,463 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 8 states, 8 states have (on average 589.375) internal successors, (4715), 8 states have internal predecessors, (4715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 22:57:05,463 INFO  L276                IsEmpty]: Start isEmpty. Operand 7978 states and 13210 transitions.
[2023-12-25 22:57:05,590 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5119
[2023-12-25 22:57:05,590 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 22:57:05,591 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-12-25 22:57:05,658 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (123)] Forceful destruction successful, exit code 0
[2023-12-25 22:57:05,816 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable124,123 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 22:57:05,816 INFO  L420      AbstractCegarLoop]: === Iteration 126 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 22:57:05,817 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 22:57:05,817 INFO  L85        PathProgramCache]: Analyzing trace with hash -1410837984, now seen corresponding path program 1 times
[2023-12-25 22:57:05,817 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 22:57:05,817 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [188967754]
[2023-12-25 22:57:05,818 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:57:05,818 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 22:57:06,264 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 22:57:06,264 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [838510941]
[2023-12-25 22:57:06,265 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 22:57:06,265 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 22:57:06,265 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 22:57:06,266 INFO  L229       MonitoredProcess]: Starting monitored process 124 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-25 22:57:06,268 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (124)] Waiting until timeout for monitored process
Received shutdown request...
[2023-12-25 22:57:10,997 WARN  L340       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end
[2023-12-25 22:57:11,025 WARN  L340       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (124)] Timeout while monitored process is still running, waiting 1000 ms for graceful end
[2023-12-25 22:57:11,331 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 22:57:11,466 INFO  L262         TraceCheckSpWp]: Trace formula consists of 22737 conjuncts, 21 conjunts are in the unsatisfiable core
[2023-12-25 22:57:11,511 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 22:57:11,643 INFO  L805   garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining)
[2023-12-25 22:57:11,712 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (124)] Ended with exit code 0
[2023-12-25 22:57:11,856 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 124 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable125
[2023-12-25 22:57:11,856 WARN  L619      AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was analyzing trace of length 5119 with TraceHistMax 2,while TraceCheckSpWp was constructing forward predicates,while PolyPacSimplificationTermWalker was simplifying a ∧-3-1 term,while PolyPacSimplificationTermWalker was simplifying 3 xjuncts wrt. a ATOM-1 context.
[2023-12-25 22:57:11,860 INFO  L445         BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-12-25 22:57:11,862 INFO  L179   ceAbstractionStarter]: Computing trace abstraction results
[2023-12-25 22:57:11,863 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.12 10:57:11 BoogieIcfgContainer
[2023-12-25 22:57:11,863 INFO  L131        PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2023-12-25 22:57:11,863 INFO  L158              Benchmark]: Toolchain (without parser) took 845291.02ms. Allocated memory was 207.6MB in the beginning and 5.7GB in the end (delta: 5.5GB). Free memory was 142.3MB in the beginning and 1.4GB in the end (delta: -1.2GB). Peak memory consumption was 4.3GB. Max. memory is 8.0GB.
[2023-12-25 22:57:11,863 INFO  L158              Benchmark]: CDTParser took 0.09ms. Allocated memory is still 173.0MB. Free memory is still 123.4MB. There was no memory consumed. Max. memory is 8.0GB.
[2023-12-25 22:57:11,863 INFO  L158              Benchmark]: CACSL2BoogieTranslator took 1244.40ms. Allocated memory was 207.6MB in the beginning and 304.1MB in the end (delta: 96.5MB). Free memory was 142.1MB in the beginning and 129.3MB in the end (delta: 12.8MB). Peak memory consumption was 137.1MB. Max. memory is 8.0GB.
[2023-12-25 22:57:11,863 INFO  L158              Benchmark]: Boogie Procedure Inliner took 2033.07ms. Allocated memory was 304.1MB in the beginning and 1.3GB in the end (delta: 1.0GB). Free memory was 129.3MB in the beginning and 874.3MB in the end (delta: -745.0MB). Peak memory consumption was 328.7MB. Max. memory is 8.0GB.
[2023-12-25 22:57:11,864 INFO  L158              Benchmark]: Boogie Preprocessor took 2422.53ms. Allocated memory was 1.3GB in the beginning and 4.0GB in the end (delta: 2.7GB). Free memory was 874.3MB in the beginning and 3.4GB in the end (delta: -2.5GB). Peak memory consumption was 294.1MB. Max. memory is 8.0GB.
[2023-12-25 22:57:11,864 INFO  L158              Benchmark]: RCFGBuilder took 11534.30ms. Allocated memory was 4.0GB in the beginning and 5.6GB in the end (delta: 1.6GB). Free memory was 3.4GB in the beginning and 4.8GB in the end (delta: -1.4GB). Peak memory consumption was 395.5MB. Max. memory is 8.0GB.
[2023-12-25 22:57:11,864 INFO  L158              Benchmark]: TraceAbstraction took 828050.83ms. Allocated memory was 5.6GB in the beginning and 5.7GB in the end (delta: 96.5MB). Free memory was 4.8GB in the beginning and 1.4GB in the end (delta: 3.4GB). Peak memory consumption was 3.5GB. Max. memory is 8.0GB.
[2023-12-25 22:57:11,864 INFO  L338   ainManager$Toolchain]: #######################  End [Toolchain 1] #######################
 --- Results ---
 * Results from de.uni_freiburg.informatik.ultimate.core:
  - StatisticsResult: Toolchain Benchmarks
    Benchmark results are:
 * CDTParser took 0.09ms. Allocated memory is still 173.0MB. Free memory is still 123.4MB. There was no memory consumed. Max. memory is 8.0GB.
 * CACSL2BoogieTranslator took 1244.40ms. Allocated memory was 207.6MB in the beginning and 304.1MB in the end (delta: 96.5MB). Free memory was 142.1MB in the beginning and 129.3MB in the end (delta: 12.8MB). Peak memory consumption was 137.1MB. Max. memory is 8.0GB.
 * Boogie Procedure Inliner took 2033.07ms. Allocated memory was 304.1MB in the beginning and 1.3GB in the end (delta: 1.0GB). Free memory was 129.3MB in the beginning and 874.3MB in the end (delta: -745.0MB). Peak memory consumption was 328.7MB. Max. memory is 8.0GB.
 * Boogie Preprocessor took 2422.53ms. Allocated memory was 1.3GB in the beginning and 4.0GB in the end (delta: 2.7GB). Free memory was 874.3MB in the beginning and 3.4GB in the end (delta: -2.5GB). Peak memory consumption was 294.1MB. Max. memory is 8.0GB.
 * RCFGBuilder took 11534.30ms. Allocated memory was 4.0GB in the beginning and 5.6GB in the end (delta: 1.6GB). Free memory was 3.4GB in the beginning and 4.8GB in the end (delta: -1.4GB). Peak memory consumption was 395.5MB. Max. memory is 8.0GB.
 * TraceAbstraction took 828050.83ms. Allocated memory was 5.6GB in the beginning and 5.7GB in the end (delta: 96.5MB). Free memory was 4.8GB in the beginning and 1.4GB in the end (delta: 3.4GB). Peak memory consumption was 3.5GB. Max. memory is 8.0GB.
 * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction:
  - StatisticsResult: ErrorAutomatonStatistics
    NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0
  - TimeoutResultAtElement [Line: 21]: Timeout (TraceAbstraction)
    Unable to prove that a call to reach_error is unreachable (line 21). Cancelled while NwaCegarLoop was analyzing trace of length 5119 with TraceHistMax 2,while TraceCheckSpWp was constructing forward predicates,while PolyPacSimplificationTermWalker was simplifying a ∧-3-1 term,while PolyPacSimplificationTermWalker was simplifying 3 xjuncts wrt. a ATOM-1 context.
  - StatisticsResult: Ultimate Automizer benchmark data
    CFG has 1 procedures, 6818 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 828.0s, OverallIterations: 126, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 19.2s, AutomataDifference: 48.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 3834393 SdHoareTripleChecker+Valid, 7.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 3834393 mSDsluCounter, 7868210 SdHoareTripleChecker+Invalid, 7.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 6315708 mSDsCounter, 39 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 6089 IncrementalHoareTripleChecker+Invalid, 6128 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 39 mSolverCounterUnsat, 1552502 mSDtfsCounter, 6089 mSolverCounterSat, 10.6s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 617944 GetRequests, 616507 SyntacticMatches, 0 SemanticMatches, 1437 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1972 ImplicationChecksByTransitivity, 5.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=7978occurred in iteration=82, InterpolantAutomatonStates: 1176, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 12.7s AutomataMinimizationTime, 125 MinimizatonAttempts, 789780 StatesRemovedByMinimization, 124 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 149.3s SsaConstructionTime, 370.1s SatisfiabilityAnalysisTime, 55.2s InterpolantComputationTime, 619092 NumberOfCodeBlocks, 619092 NumberOfCodeBlocksAsserted, 125 NumberOfCheckSat, 618967 ConstructedInterpolants, 0 QuantifiedInterpolants, 659017 SizeOfPredicates, 597 NumberOfNonLiveVariables, 2749676 ConjunctsInSsa, 2283 ConjunctsInUnsatCore, 125 InterpolantComputations, 125 PerfectInterpolantSequences, 69784/69784 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available
RESULT: Ultimate could not prove your program: Timeout
Completed graceful shutdown