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


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


This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m
[2023-12-25 21:31:16,572 INFO  L188        SettingsManager]: Resetting all preferences to default values...
[2023-12-25 21:31:16,638 INFO  L114        SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf
[2023-12-25 21:31:16,643 WARN  L101        SettingsManager]: Preference file contains the following unknown settings:
[2023-12-25 21:31:16,643 WARN  L103        SettingsManager]:   * de.uni_freiburg.informatik.ultimate.core.Log level for class
[2023-12-25 21:31:16,665 INFO  L130        SettingsManager]: Preferences different from defaults after loading the file:
[2023-12-25 21:31:16,665 INFO  L151        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2023-12-25 21:31:16,666 INFO  L153        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2023-12-25 21:31:16,666 INFO  L151        SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults:
[2023-12-25 21:31:16,669 INFO  L153        SettingsManager]:  * Use memory slicer=true
[2023-12-25 21:31:16,669 INFO  L151        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2023-12-25 21:31:16,670 INFO  L153        SettingsManager]:  * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2023-12-25 21:31:16,670 INFO  L151        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2023-12-25 21:31:16,671 INFO  L153        SettingsManager]:  * Create parallel compositions if possible=false
[2023-12-25 21:31:16,671 INFO  L153        SettingsManager]:  * Use SBE=true
[2023-12-25 21:31:16,671 INFO  L151        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2023-12-25 21:31:16,671 INFO  L153        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2023-12-25 21:31:16,671 INFO  L153        SettingsManager]:  * Overapproximate operations on floating types=true
[2023-12-25 21:31:16,672 INFO  L153        SettingsManager]:  * Check division by zero=IGNORE
[2023-12-25 21:31:16,673 INFO  L153        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2023-12-25 21:31:16,673 INFO  L153        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2023-12-25 21:31:16,673 INFO  L153        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2023-12-25 21:31:16,673 INFO  L153        SettingsManager]:  * Allow undefined functions=false
[2023-12-25 21:31:16,673 INFO  L153        SettingsManager]:  * Check if freed pointer was valid=false
[2023-12-25 21:31:16,673 INFO  L153        SettingsManager]:  * Use constant arrays=true
[2023-12-25 21:31:16,674 INFO  L151        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2023-12-25 21:31:16,674 INFO  L153        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2023-12-25 21:31:16,674 INFO  L153        SettingsManager]:  * Only consider context switches at boundaries of atomic blocks=true
[2023-12-25 21:31:16,674 INFO  L153        SettingsManager]:  * SMT solver=External_DefaultMode
[2023-12-25 21:31:16,674 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2023-12-25 21:31:16,675 INFO  L151        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2023-12-25 21:31:16,675 INFO  L153        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2023-12-25 21:31:16,675 INFO  L153        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopHeads
[2023-12-25 21:31:16,676 INFO  L153        SettingsManager]:  * Trace refinement strategy=CAMEL
[2023-12-25 21:31:16,676 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2023-12-25 21:31:16,676 INFO  L153        SettingsManager]:  * Apply one-shot large block encoding in concurrent analysis=false
[2023-12-25 21:31:16,676 INFO  L153        SettingsManager]:  * Automaton type used in concurrency analysis=PETRI_NET
[2023-12-25 21:31:16,676 INFO  L153        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2023-12-25 21:31:16,676 INFO  L153        SettingsManager]:  * Order on configurations for Petri net unfoldings=DBO
[2023-12-25 21:31:16,676 INFO  L153        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2023-12-25 21:31:16,676 INFO  L153        SettingsManager]:  * Looper check in Petri net analysis=SEMANTIC
WARNING: An illegal reflective access operation has occurred
WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int)
WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true
[2023-12-25 21:31:16,856 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2023-12-25 21:31:16,876 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2023-12-25 21:31:16,878 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2023-12-25 21:31:16,879 INFO  L270        PluginConnector]: Initializing CDTParser...
[2023-12-25 21:31:16,879 INFO  L274        PluginConnector]: CDTParser initialized
[2023-12-25 21:31:16,880 INFO  L431   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.rether.3.prop1-func-interl.c
[2023-12-25 21:31:18,010 INFO  L533              CDTParser]: Created temporary CDT project at NULL
[2023-12-25 21:31:18,274 INFO  L384              CDTParser]: Found 1 translation units.
[2023-12-25 21:31:18,275 INFO  L180              CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.rether.3.prop1-func-interl.c
[2023-12-25 21:31:18,298 INFO  L427              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b6515847d/30a39963094b4b45b03b1d2a7814b7ff/FLAGe15e17f74
[2023-12-25 21:31:18,313 INFO  L435              CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b6515847d/30a39963094b4b45b03b1d2a7814b7ff
[2023-12-25 21:31:18,315 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2023-12-25 21:31:18,316 INFO  L133        ToolchainWalker]: Walking toolchain with 5 elements.
[2023-12-25 21:31:18,318 INFO  L112        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2023-12-25 21:31:18,318 INFO  L270        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2023-12-25 21:31:18,321 INFO  L274        PluginConnector]: CACSL2BoogieTranslator initialized
[2023-12-25 21:31:18,322 INFO  L184        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.12 09:31:18" (1/1) ...
[2023-12-25 21:31:18,323 INFO  L204        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@45ee0dea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 09:31:18, skipping insertion in model container
[2023-12-25 21:31:18,323 INFO  L184        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.12 09:31:18" (1/1) ...
[2023-12-25 21:31:18,397 INFO  L177         MainTranslator]: Built tables and reachable declarations
[2023-12-25 21:31:18,596 WARN  L239   ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.rether.3.prop1-func-interl.c[1173,1186]
[2023-12-25 21:31:19,153 INFO  L209          PostProcessor]: Analyzing one entry point: main
[2023-12-25 21:31:19,215 INFO  L202         MainTranslator]: Completed pre-run
[2023-12-25 21:31:19,225 WARN  L239   ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.rether.3.prop1-func-interl.c[1173,1186]
[2023-12-25 21:31:19,578 INFO  L209          PostProcessor]: Analyzing one entry point: main
[2023-12-25 21:31:19,589 INFO  L206         MainTranslator]: Completed translation
[2023-12-25 21:31:19,590 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 09:31:19 WrapperNode
[2023-12-25 21:31:19,590 INFO  L131        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2023-12-25 21:31:19,591 INFO  L112        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2023-12-25 21:31:19,591 INFO  L270        PluginConnector]: Initializing Boogie Procedure Inliner...
[2023-12-25 21:31:19,591 INFO  L274        PluginConnector]: Boogie Procedure Inliner initialized
[2023-12-25 21:31:19,595 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 09:31:19" (1/1) ...
[2023-12-25 21:31:19,744 INFO  L184        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 09:31:19" (1/1) ...
[2023-12-25 21:31:22,158 INFO  L138                Inliner]: procedures = 17, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 29670
[2023-12-25 21:31:22,159 INFO  L131        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2023-12-25 21:31:22,159 INFO  L112        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2023-12-25 21:31:22,159 INFO  L270        PluginConnector]: Initializing Boogie Preprocessor...
[2023-12-25 21:31:22,159 INFO  L274        PluginConnector]: Boogie Preprocessor initialized
[2023-12-25 21:31:22,167 INFO  L184        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 09:31:19" (1/1) ...
[2023-12-25 21:31:22,167 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 09:31:19" (1/1) ...
[2023-12-25 21:31:22,902 INFO  L184        PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 09:31:19" (1/1) ...
[2023-12-25 21:31:23,267 INFO  L175           MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0].
[2023-12-25 21:31:23,268 INFO  L184        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 09:31:19" (1/1) ...
[2023-12-25 21:31:23,268 INFO  L184        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 09:31:19" (1/1) ...
[2023-12-25 21:31:24,005 INFO  L184        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 09:31:19" (1/1) ...
[2023-12-25 21:31:24,104 INFO  L184        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 09:31:19" (1/1) ...
[2023-12-25 21:31:24,209 INFO  L184        PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 09:31:19" (1/1) ...
[2023-12-25 21:31:24,289 INFO  L184        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 09:31:19" (1/1) ...
[2023-12-25 21:31:24,684 INFO  L131        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2023-12-25 21:31:24,685 INFO  L112        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2023-12-25 21:31:24,685 INFO  L270        PluginConnector]: Initializing RCFGBuilder...
[2023-12-25 21:31:24,685 INFO  L274        PluginConnector]: RCFGBuilder initialized
[2023-12-25 21:31:24,685 INFO  L184        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 09:31:19" (1/1) ...
[2023-12-25 21:31:24,716 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2023-12-25 21:31:24,722 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 21:31:24,731 INFO  L229       MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null)
[2023-12-25 21:31:24,746 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process
[2023-12-25 21:31:24,749 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2023-12-25 21:31:24,749 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int#0
[2023-12-25 21:31:24,749 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2023-12-25 21:31:24,750 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2023-12-25 21:31:26,079 INFO  L241             CfgBuilder]: Building ICFG
[2023-12-25 21:31:26,081 INFO  L267             CfgBuilder]: Building CFG for each procedure with an implementation
[2023-12-25 21:31:36,625 INFO  L282             CfgBuilder]: Performing block encoding
[2023-12-25 21:31:37,040 INFO  L304             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2023-12-25 21:31:37,040 INFO  L309             CfgBuilder]: Removed 1 assume(true) statements.
[2023-12-25 21:31:37,040 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.12 09:31:37 BoogieIcfgContainer
[2023-12-25 21:31:37,041 INFO  L131        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2023-12-25 21:31:37,043 INFO  L112        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2023-12-25 21:31:37,043 INFO  L270        PluginConnector]: Initializing TraceAbstraction...
[2023-12-25 21:31:37,045 INFO  L274        PluginConnector]: TraceAbstraction initialized
[2023-12-25 21:31:37,046 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.12 09:31:18" (1/3) ...
[2023-12-25 21:31:37,046 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2fc21a48 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.12 09:31:37, skipping insertion in model container
[2023-12-25 21:31:37,046 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 09:31:19" (2/3) ...
[2023-12-25 21:31:37,047 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2fc21a48 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.12 09:31:37, skipping insertion in model container
[2023-12-25 21:31:37,047 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.12 09:31:37" (3/3) ...
[2023-12-25 21:31:37,048 INFO  L112   eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.rether.3.prop1-func-interl.c
[2023-12-25 21:31:37,059 INFO  L204   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2023-12-25 21:31:37,059 INFO  L163   ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2023-12-25 21:31:37,153 INFO  L356      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2023-12-25 21:31:37,158 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;@4c30a719, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2023-12-25 21:31:37,158 INFO  L358      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2023-12-25 21:31:37,175 INFO  L276                IsEmpty]: Start isEmpty. Operand  has 6708 states, 6706 states have (on average 1.6668654935878318) internal successors, (11178), 6707 states have internal predecessors, (11178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 21:31:37,200 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 343
[2023-12-25 21:31:37,200 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 21:31:37,201 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]
[2023-12-25 21:31:37,202 INFO  L420      AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 21:31:37,207 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 21:31:37,208 INFO  L85        PathProgramCache]: Analyzing trace with hash -321214318, now seen corresponding path program 1 times
[2023-12-25 21:31:37,214 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 21:31:37,214 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1200804104]
[2023-12-25 21:31:37,214 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 21:31:37,215 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 21:31:37,587 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 21:31:38,434 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-25 21:31:38,434 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 21:31:38,435 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1200804104]
[2023-12-25 21:31:38,435 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1200804104] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 21:31:38,435 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 21:31:38,435 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-12-25 21:31:38,436 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [658018285]
[2023-12-25 21:31:38,437 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 21:31:38,441 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-12-25 21:31:38,441 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 21:31:38,469 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-12-25 21:31:38,469 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-12-25 21:31:38,482 INFO  L87              Difference]: Start difference. First operand  has 6708 states, 6706 states have (on average 1.6668654935878318) internal successors, (11178), 6707 states have internal predecessors, (11178), 0 states have call successors, (0), 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 85.5) internal successors, (342), 4 states have internal predecessors, (342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 21:31:38,930 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 21:31:38,931 INFO  L93              Difference]: Finished difference Result 13115 states and 21857 transitions.
[2023-12-25 21:31:38,932 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-12-25 21:31:38,933 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 85.5) internal successors, (342), 4 states have internal predecessors, (342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 342
[2023-12-25 21:31:38,935 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 21:31:38,967 INFO  L225             Difference]: With dead ends: 13115
[2023-12-25 21:31:38,968 INFO  L226             Difference]: Without dead ends: 6708
[2023-12-25 21:31:38,981 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-12-25 21:31:38,984 INFO  L413           NwaCegarLoop]: 11171 mSDtfsCounter, 1 mSDsluCounter, 22337 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 33508 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 21:31:38,985 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 33508 Invalid, 13 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-12-25 21:31:39,005 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 6708 states.
[2023-12-25 21:31:39,114 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 6708 to 6708.
[2023-12-25 21:31:39,125 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 6708 states, 6707 states have (on average 1.6663187714328314) internal successors, (11176), 6707 states have internal predecessors, (11176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 21:31:39,138 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 6708 states to 6708 states and 11176 transitions.
[2023-12-25 21:31:39,140 INFO  L78                 Accepts]: Start accepts. Automaton has 6708 states and 11176 transitions. Word has length 342
[2023-12-25 21:31:39,141 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 21:31:39,141 INFO  L495      AbstractCegarLoop]: Abstraction has 6708 states and 11176 transitions.
[2023-12-25 21:31:39,141 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 85.5) internal successors, (342), 4 states have internal predecessors, (342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 21:31:39,141 INFO  L276                IsEmpty]: Start isEmpty. Operand 6708 states and 11176 transitions.
[2023-12-25 21:31:39,144 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 344
[2023-12-25 21:31:39,144 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 21:31:39,144 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]
[2023-12-25 21:31:39,144 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2023-12-25 21:31:39,144 INFO  L420      AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 21:31:39,145 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 21:31:39,145 INFO  L85        PathProgramCache]: Analyzing trace with hash -1365982290, now seen corresponding path program 1 times
[2023-12-25 21:31:39,145 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 21:31:39,145 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [593613045]
[2023-12-25 21:31:39,145 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 21:31:39,145 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 21:31:39,238 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 21:31:39,574 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-25 21:31:39,574 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 21:31:39,574 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [593613045]
[2023-12-25 21:31:39,575 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [593613045] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 21:31:39,575 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 21:31:39,575 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-12-25 21:31:39,575 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [772702768]
[2023-12-25 21:31:39,575 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 21:31:39,578 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-12-25 21:31:39,580 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 21:31:39,581 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-12-25 21:31:39,581 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-12-25 21:31:39,581 INFO  L87              Difference]: Start difference. First operand 6708 states and 11176 transitions. Second operand  has 4 states, 4 states have (on average 85.75) internal successors, (343), 4 states have internal predecessors, (343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 21:31:39,900 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 21:31:39,900 INFO  L93              Difference]: Finished difference Result 13118 states and 21855 transitions.
[2023-12-25 21:31:39,901 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-12-25 21:31:39,901 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 85.75) internal successors, (343), 4 states have internal predecessors, (343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 343
[2023-12-25 21:31:39,902 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 21:31:39,917 INFO  L225             Difference]: With dead ends: 13118
[2023-12-25 21:31:39,917 INFO  L226             Difference]: Without dead ends: 6711
[2023-12-25 21:31:39,922 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-12-25 21:31:39,923 INFO  L413           NwaCegarLoop]: 11171 mSDtfsCounter, 1 mSDsluCounter, 22335 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 33506 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2023-12-25 21:31:39,924 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 33506 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-12-25 21:31:39,932 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 6711 states.
[2023-12-25 21:31:40,011 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 6711 to 6710.
[2023-12-25 21:31:40,031 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 6710 states, 6709 states have (on average 1.6661201371292294) internal successors, (11178), 6709 states have internal predecessors, (11178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 21:31:40,044 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 6710 states to 6710 states and 11178 transitions.
[2023-12-25 21:31:40,045 INFO  L78                 Accepts]: Start accepts. Automaton has 6710 states and 11178 transitions. Word has length 343
[2023-12-25 21:31:40,046 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 21:31:40,047 INFO  L495      AbstractCegarLoop]: Abstraction has 6710 states and 11178 transitions.
[2023-12-25 21:31:40,047 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 85.75) internal successors, (343), 4 states have internal predecessors, (343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 21:31:40,047 INFO  L276                IsEmpty]: Start isEmpty. Operand 6710 states and 11178 transitions.
[2023-12-25 21:31:40,050 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 345
[2023-12-25 21:31:40,050 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 21:31:40,050 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]
[2023-12-25 21:31:40,050 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2023-12-25 21:31:40,051 INFO  L420      AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 21:31:40,056 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 21:31:40,057 INFO  L85        PathProgramCache]: Analyzing trace with hash 393791532, now seen corresponding path program 1 times
[2023-12-25 21:31:40,057 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 21:31:40,057 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [864358686]
[2023-12-25 21:31:40,058 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 21:31:40,058 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 21:31:40,175 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 21:31:40,574 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-25 21:31:40,574 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 21:31:40,575 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [864358686]
[2023-12-25 21:31:40,575 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [864358686] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 21:31:40,575 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 21:31:40,575 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-12-25 21:31:40,575 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1395270767]
[2023-12-25 21:31:40,576 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 21:31:40,576 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-12-25 21:31:40,576 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 21:31:40,577 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-12-25 21:31:40,578 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2023-12-25 21:31:40,579 INFO  L87              Difference]: Start difference. First operand 6710 states and 11178 transitions. Second operand  has 5 states, 5 states have (on average 68.8) internal successors, (344), 4 states have internal predecessors, (344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 21:31:41,059 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 21:31:41,060 INFO  L93              Difference]: Finished difference Result 19719 states and 32852 transitions.
[2023-12-25 21:31:41,060 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2023-12-25 21:31:41,060 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 68.8) internal successors, (344), 4 states have internal predecessors, (344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 344
[2023-12-25 21:31:41,061 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 21:31:41,097 INFO  L225             Difference]: With dead ends: 19719
[2023-12-25 21:31:41,097 INFO  L226             Difference]: Without dead ends: 13310
[2023-12-25 21:31:41,104 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56
[2023-12-25 21:31:41,105 INFO  L413           NwaCegarLoop]: 11498 mSDtfsCounter, 43164 mSDsluCounter, 22333 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43164 SdHoareTripleChecker+Valid, 33831 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-12-25 21:31:41,105 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [43164 Valid, 33831 Invalid, 21 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [0 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-12-25 21:31:41,118 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 13310 states.
[2023-12-25 21:31:41,233 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 13310 to 6913.
[2023-12-25 21:31:41,242 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 6913 states, 6912 states have (on average 1.665943287037037) internal successors, (11515), 6912 states have internal predecessors, (11515), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 21:31:41,256 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 6913 states to 6913 states and 11515 transitions.
[2023-12-25 21:31:41,256 INFO  L78                 Accepts]: Start accepts. Automaton has 6913 states and 11515 transitions. Word has length 344
[2023-12-25 21:31:41,256 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 21:31:41,257 INFO  L495      AbstractCegarLoop]: Abstraction has 6913 states and 11515 transitions.
[2023-12-25 21:31:41,257 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 68.8) internal successors, (344), 4 states have internal predecessors, (344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 21:31:41,257 INFO  L276                IsEmpty]: Start isEmpty. Operand 6913 states and 11515 transitions.
[2023-12-25 21:31:41,480 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 4610
[2023-12-25 21:31:41,480 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 21:31:41,486 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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[2023-12-25 21:31:41,487 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2023-12-25 21:31:41,487 INFO  L420      AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 21:31:41,487 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 21:31:41,488 INFO  L85        PathProgramCache]: Analyzing trace with hash -110439220, now seen corresponding path program 1 times
[2023-12-25 21:31:41,488 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 21:31:41,489 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1402647948]
[2023-12-25 21:31:41,489 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 21:31:41,489 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 21:31:41,986 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 21:31:41,986 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [160695635]
[2023-12-25 21:31:41,987 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 21:31:41,987 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 21:31:41,988 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 21:31:41,990 INFO  L229       MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-25 21:31:41,997 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process
[2023-12-25 21:31:46,897 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 21:31:47,025 INFO  L262         TraceCheckSpWp]: Trace formula consists of 20492 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-12-25 21:31:47,125 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 21:31:47,496 INFO  L134       CoverageAnalysis]: Checked inductivity of 140 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 134 trivial. 0 not checked.
[2023-12-25 21:31:47,496 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 21:31:47,496 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 21:31:47,496 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1402647948]
[2023-12-25 21:31:47,496 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 21:31:47,496 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [160695635]
[2023-12-25 21:31:47,497 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [160695635] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 21:31:47,497 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 21:31:47,497 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8
[2023-12-25 21:31:47,497 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1759902166]
[2023-12-25 21:31:47,497 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 21:31:47,501 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 8 states
[2023-12-25 21:31:47,501 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 21:31:47,504 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2023-12-25 21:31:47,504 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56
[2023-12-25 21:31:47,505 INFO  L87              Difference]: Start difference. First operand 6913 states and 11515 transitions. Second operand  has 8 states, 8 states have (on average 559.5) internal successors, (4476), 8 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 21:31:47,952 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 21:31:47,953 INFO  L93              Difference]: Finished difference Result 19724 states and 32857 transitions.
[2023-12-25 21:31:47,953 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. 
[2023-12-25 21:31:47,954 INFO  L78                 Accepts]: Start accepts. Automaton has  has 8 states, 8 states have (on average 559.5) internal successors, (4476), 8 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 4609
[2023-12-25 21:31:47,960 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 21:31:47,980 INFO  L225             Difference]: With dead ends: 19724
[2023-12-25 21:31:47,980 INFO  L226             Difference]: Without dead ends: 13315
[2023-12-25 21:31:47,991 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 4617 GetRequests, 4605 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 21:31:47,991 INFO  L413           NwaCegarLoop]: 11499 mSDtfsCounter, 31968 mSDsluCounter, 56304 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31968 SdHoareTripleChecker+Valid, 67803 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-12-25 21:31:47,992 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [31968 Valid, 67803 Invalid, 51 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-12-25 21:31:48,004 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 13315 states.
[2023-12-25 21:31:48,122 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 13315 to 6913.
[2023-12-25 21:31:48,131 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 6913 states, 6912 states have (on average 1.665943287037037) internal successors, (11515), 6912 states have internal predecessors, (11515), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 21:31:48,143 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 6913 states to 6913 states and 11515 transitions.
[2023-12-25 21:31:48,143 INFO  L78                 Accepts]: Start accepts. Automaton has 6913 states and 11515 transitions. Word has length 4609
[2023-12-25 21:31:48,148 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 21:31:48,148 INFO  L495      AbstractCegarLoop]: Abstraction has 6913 states and 11515 transitions.
[2023-12-25 21:31:48,149 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 8 states, 8 states have (on average 559.5) internal successors, (4476), 8 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 21:31:48,150 INFO  L276                IsEmpty]: Start isEmpty. Operand 6913 states and 11515 transitions.
[2023-12-25 21:31:48,313 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 4611
[2023-12-25 21:31:48,313 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 21:31:48,315 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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[2023-12-25 21:31:48,378 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 21:31:48,525 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 21:31:48,525 INFO  L420      AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 21:31:48,526 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 21:31:48,527 INFO  L85        PathProgramCache]: Analyzing trace with hash -1823707020, now seen corresponding path program 1 times
[2023-12-25 21:31:48,527 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 21:31:48,527 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [43544524]
[2023-12-25 21:31:48,528 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 21:31:48,528 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 21:31:48,994 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 21:31:48,995 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [220532334]
[2023-12-25 21:31:48,996 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 21:31:48,996 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 21:31:48,996 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 21:31:48,997 INFO  L229       MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-25 21:31:49,021 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process
[2023-12-25 21:31:54,278 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 21:31:54,422 INFO  L262         TraceCheckSpWp]: Trace formula consists of 20495 conjuncts, 156 conjunts are in the unsatisfiable core
[2023-12-25 21:31:54,520 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 21:32:11,547 INFO  L134       CoverageAnalysis]: Checked inductivity of 140 backedges. 6 proven. 134 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-25 21:32:11,547 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-12-25 21:32:44,761 INFO  L134       CoverageAnalysis]: Checked inductivity of 140 backedges. 62 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-25 21:32:44,761 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 21:32:44,761 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [43544524]
[2023-12-25 21:32:44,761 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 21:32:44,761 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [220532334]
[2023-12-25 21:32:44,761 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [220532334] provided 0 perfect and 2 imperfect interpolant sequences
[2023-12-25 21:32:44,762 INFO  L185   FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2023-12-25 21:32:44,763 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [61, 34] total 92
[2023-12-25 21:32:44,763 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1325431428]
[2023-12-25 21:32:44,769 INFO  L85    oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2023-12-25 21:32:44,776 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 92 states
[2023-12-25 21:32:44,776 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 21:32:44,794 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 92 interpolants.
[2023-12-25 21:32:44,814 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=704, Invalid=7668, Unknown=0, NotChecked=0, Total=8372
[2023-12-25 21:32:44,817 INFO  L87              Difference]: Start difference. First operand 6913 states and 11515 transitions. Second operand  has 92 states, 92 states have (on average 100.09782608695652) internal successors, (9209), 92 states have internal predecessors, (9209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)