/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.8.prop1-func-interl.c


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


This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m
[2023-12-16 19:57:55,492 INFO  L188        SettingsManager]: Resetting all preferences to default values...
[2023-12-16 19:57:55,560 INFO  L114        SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf
[2023-12-16 19:57:55,565 WARN  L101        SettingsManager]: Preference file contains the following unknown settings:
[2023-12-16 19:57:55,566 WARN  L103        SettingsManager]:   * de.uni_freiburg.informatik.ultimate.core.Log level for class
[2023-12-16 19:57:55,587 INFO  L130        SettingsManager]: Preferences different from defaults after loading the file:
[2023-12-16 19:57:55,588 INFO  L151        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2023-12-16 19:57:55,588 INFO  L153        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2023-12-16 19:57:55,588 INFO  L151        SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults:
[2023-12-16 19:57:55,591 INFO  L153        SettingsManager]:  * Use memory slicer=true
[2023-12-16 19:57:55,591 INFO  L151        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2023-12-16 19:57:55,592 INFO  L153        SettingsManager]:  * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2023-12-16 19:57:55,593 INFO  L151        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2023-12-16 19:57:55,593 INFO  L153        SettingsManager]:  * Create parallel compositions if possible=false
[2023-12-16 19:57:55,594 INFO  L153        SettingsManager]:  * Use SBE=true
[2023-12-16 19:57:55,594 INFO  L151        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2023-12-16 19:57:55,594 INFO  L153        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2023-12-16 19:57:55,594 INFO  L153        SettingsManager]:  * Overapproximate operations on floating types=true
[2023-12-16 19:57:55,594 INFO  L153        SettingsManager]:  * Check division by zero=IGNORE
[2023-12-16 19:57:55,594 INFO  L153        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2023-12-16 19:57:55,594 INFO  L153        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2023-12-16 19:57:55,595 INFO  L153        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2023-12-16 19:57:55,595 INFO  L153        SettingsManager]:  * Allow undefined functions=false
[2023-12-16 19:57:55,595 INFO  L153        SettingsManager]:  * Check if freed pointer was valid=false
[2023-12-16 19:57:55,595 INFO  L153        SettingsManager]:  * Use constant arrays=true
[2023-12-16 19:57:55,596 INFO  L151        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2023-12-16 19:57:55,596 INFO  L153        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2023-12-16 19:57:55,596 INFO  L153        SettingsManager]:  * Only consider context switches at boundaries of atomic blocks=true
[2023-12-16 19:57:55,596 INFO  L153        SettingsManager]:  * SMT solver=External_DefaultMode
[2023-12-16 19:57:55,596 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2023-12-16 19:57:55,597 INFO  L151        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2023-12-16 19:57:55,597 INFO  L153        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2023-12-16 19:57:55,597 INFO  L153        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopHeads
[2023-12-16 19:57:55,597 INFO  L153        SettingsManager]:  * Trace refinement strategy=CAMEL
[2023-12-16 19:57:55,597 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2023-12-16 19:57:55,597 INFO  L153        SettingsManager]:  * Apply one-shot large block encoding in concurrent analysis=false
[2023-12-16 19:57:55,598 INFO  L153        SettingsManager]:  * Automaton type used in concurrency analysis=PETRI_NET
[2023-12-16 19:57:55,598 INFO  L153        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2023-12-16 19:57:55,598 INFO  L153        SettingsManager]:  * Order on configurations for Petri net unfoldings=DBO
[2023-12-16 19:57:55,598 INFO  L153        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2023-12-16 19:57:55,598 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$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true
[2023-12-16 19:57:55,807 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2023-12-16 19:57:55,825 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2023-12-16 19:57:55,827 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2023-12-16 19:57:55,828 INFO  L270        PluginConnector]: Initializing CDTParser...
[2023-12-16 19:57:55,829 INFO  L274        PluginConnector]: CDTParser initialized
[2023-12-16 19:57:55,829 INFO  L431   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.telephony.8.prop1-func-interl.c
[2023-12-16 19:57:56,867 INFO  L533              CDTParser]: Created temporary CDT project at NULL
[2023-12-16 19:57:57,196 INFO  L384              CDTParser]: Found 1 translation units.
[2023-12-16 19:57:57,197 INFO  L180              CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.telephony.8.prop1-func-interl.c
[2023-12-16 19:57:57,227 INFO  L427              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6134bc39b/6c15b53a46ba4884bdecb1c56bef3ae2/FLAG1d71dc6a2
[2023-12-16 19:57:57,240 INFO  L435              CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6134bc39b/6c15b53a46ba4884bdecb1c56bef3ae2
[2023-12-16 19:57:57,242 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2023-12-16 19:57:57,244 INFO  L133        ToolchainWalker]: Walking toolchain with 5 elements.
[2023-12-16 19:57:57,246 INFO  L112        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2023-12-16 19:57:57,246 INFO  L270        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2023-12-16 19:57:57,249 INFO  L274        PluginConnector]: CACSL2BoogieTranslator initialized
[2023-12-16 19:57:57,249 INFO  L184        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 07:57:57" (1/1) ...
[2023-12-16 19:57:57,250 INFO  L204        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6b43ceb0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 07:57:57, skipping insertion in model container
[2023-12-16 19:57:57,250 INFO  L184        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 07:57:57" (1/1) ...
[2023-12-16 19:57:57,363 INFO  L177         MainTranslator]: Built tables and reachable declarations
[2023-12-16 19:57:57,573 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.8.prop1-func-interl.c[1176,1189]
[2023-12-16 19:57:58,211 INFO  L209          PostProcessor]: Analyzing one entry point: main
[2023-12-16 19:57:58,218 INFO  L202         MainTranslator]: Completed pre-run
[2023-12-16 19:57:58,228 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.8.prop1-func-interl.c[1176,1189]
[2023-12-16 19:57:58,549 INFO  L209          PostProcessor]: Analyzing one entry point: main
[2023-12-16 19:57:58,558 INFO  L206         MainTranslator]: Completed translation
[2023-12-16 19:57:58,559 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 07:57:58 WrapperNode
[2023-12-16 19:57:58,559 INFO  L131        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2023-12-16 19:57:58,560 INFO  L112        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2023-12-16 19:57:58,560 INFO  L270        PluginConnector]: Initializing Boogie Procedure Inliner...
[2023-12-16 19:57:58,560 INFO  L274        PluginConnector]: Boogie Procedure Inliner initialized
[2023-12-16 19:57:58,564 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 07:57:58" (1/1) ...
[2023-12-16 19:57:58,736 INFO  L184        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 07:57:58" (1/1) ...
[2023-12-16 19:58:01,171 INFO  L138                Inliner]: procedures = 17, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 29596
[2023-12-16 19:58:01,171 INFO  L131        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2023-12-16 19:58:01,172 INFO  L112        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2023-12-16 19:58:01,172 INFO  L270        PluginConnector]: Initializing Boogie Preprocessor...
[2023-12-16 19:58:01,172 INFO  L274        PluginConnector]: Boogie Preprocessor initialized
[2023-12-16 19:58:01,182 INFO  L184        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 07:57:58" (1/1) ...
[2023-12-16 19:58:01,182 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 07:57:58" (1/1) ...
[2023-12-16 19:58:01,770 INFO  L184        PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 07:57:58" (1/1) ...
[2023-12-16 19:58:02,098 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].
[2023-12-16 19:58:02,098 INFO  L184        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 07:57:58" (1/1) ...
[2023-12-16 19:58:02,098 INFO  L184        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 07:57:58" (1/1) ...
[2023-12-16 19:58:02,814 INFO  L184        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 07:57:58" (1/1) ...
[2023-12-16 19:58:03,029 INFO  L184        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 07:57:58" (1/1) ...
[2023-12-16 19:58:03,153 INFO  L184        PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 07:57:58" (1/1) ...
[2023-12-16 19:58:03,244 INFO  L184        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 07:57:58" (1/1) ...
[2023-12-16 19:58:03,685 INFO  L131        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2023-12-16 19:58:03,686 INFO  L112        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2023-12-16 19:58:03,686 INFO  L270        PluginConnector]: Initializing RCFGBuilder...
[2023-12-16 19:58:03,686 INFO  L274        PluginConnector]: RCFGBuilder initialized
[2023-12-16 19:58:03,687 INFO  L184        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 07:57:58" (1/1) ...
[2023-12-16 19:58:03,697 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2023-12-16 19:58:03,704 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-16 19:58:03,715 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)
[2023-12-16 19:58:03,727 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
[2023-12-16 19:58:03,739 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2023-12-16 19:58:03,740 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int#0
[2023-12-16 19:58:03,740 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2023-12-16 19:58:03,740 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2023-12-16 19:58:04,664 INFO  L241             CfgBuilder]: Building ICFG
[2023-12-16 19:58:04,666 INFO  L267             CfgBuilder]: Building CFG for each procedure with an implementation
[2023-12-16 19:58:15,299 INFO  L282             CfgBuilder]: Performing block encoding
[2023-12-16 19:58:15,639 INFO  L304             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2023-12-16 19:58:15,639 INFO  L309             CfgBuilder]: Removed 1 assume(true) statements.
[2023-12-16 19:58:15,640 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 07:58:15 BoogieIcfgContainer
[2023-12-16 19:58:15,640 INFO  L131        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2023-12-16 19:58:15,641 INFO  L112        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2023-12-16 19:58:15,642 INFO  L270        PluginConnector]: Initializing TraceAbstraction...
[2023-12-16 19:58:15,644 INFO  L274        PluginConnector]: TraceAbstraction initialized
[2023-12-16 19:58:15,644 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.12 07:57:57" (1/3) ...
[2023-12-16 19:58:15,645 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@289857b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 07:58:15, skipping insertion in model container
[2023-12-16 19:58:15,645 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 07:57:58" (2/3) ...
[2023-12-16 19:58:15,645 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@289857b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 07:58:15, skipping insertion in model container
[2023-12-16 19:58:15,645 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 07:58:15" (3/3) ...
[2023-12-16 19:58:15,646 INFO  L112   eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.telephony.8.prop1-func-interl.c
[2023-12-16 19:58:15,659 INFO  L204   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2023-12-16 19:58:15,659 INFO  L163   ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2023-12-16 19:58:15,888 INFO  L356      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2023-12-16 19:58:15,892 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;@57441ed2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2023-12-16 19:58:15,892 INFO  L358      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2023-12-16 19:58:15,919 INFO  L276                IsEmpty]: Start isEmpty. Operand  has 6739 states, 6737 states have (on average 1.670624907228737) internal successors, (11255), 6738 states have internal predecessors, (11255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-16 19:58:15,943 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 349
[2023-12-16 19:58:15,944 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-16 19:58:15,944 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]
[2023-12-16 19:58:15,945 INFO  L420      AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-16 19:58:15,950 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-16 19:58:15,951 INFO  L85        PathProgramCache]: Analyzing trace with hash -286940879, now seen corresponding path program 1 times
[2023-12-16 19:58:15,957 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-16 19:58:15,957 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2066780896]
[2023-12-16 19:58:15,957 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-16 19:58:15,958 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-16 19:58:16,360 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-16 19:58:17,195 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-16 19:58:17,196 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-16 19:58:17,196 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2066780896]
[2023-12-16 19:58:17,196 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2066780896] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-16 19:58:17,196 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-16 19:58:17,196 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-12-16 19:58:17,198 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1186623191]
[2023-12-16 19:58:17,198 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-16 19:58:17,202 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-12-16 19:58:17,202 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-16 19:58:17,225 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-12-16 19:58:17,226 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-12-16 19:58:17,239 INFO  L87              Difference]: Start difference. First operand  has 6739 states, 6737 states have (on average 1.670624907228737) internal successors, (11255), 6738 states have internal predecessors, (11255), 0 states have call successors, (0), 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 87.0) internal successors, (348), 4 states have internal predecessors, (348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-16 19:58:17,518 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-16 19:58:17,519 INFO  L93              Difference]: Finished difference Result 13234 states and 22106 transitions.
[2023-12-16 19:58:17,520 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-12-16 19:58:17,521 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 87.0) internal successors, (348), 4 states have internal predecessors, (348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 348
[2023-12-16 19:58:17,524 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-16 19:58:17,557 INFO  L225             Difference]: With dead ends: 13234
[2023-12-16 19:58:17,557 INFO  L226             Difference]: Without dead ends: 6739
[2023-12-16 19:58:17,571 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
[2023-12-16 19:58:17,574 INFO  L413           NwaCegarLoop]: 11248 mSDtfsCounter, 1 mSDsluCounter, 22491 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 33739 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
[2023-12-16 19:58:17,575 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 33739 Invalid, 13 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-12-16 19:58:17,597 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 6739 states.
[2023-12-16 19:58:17,708 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 6739 to 6739.
[2023-12-16 19:58:17,719 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 6739 states, 6738 states have (on average 1.670080142475512) internal successors, (11253), 6738 states have internal predecessors, (11253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-16 19:58:17,735 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 6739 states to 6739 states and 11253 transitions.
[2023-12-16 19:58:17,736 INFO  L78                 Accepts]: Start accepts. Automaton has 6739 states and 11253 transitions. Word has length 348
[2023-12-16 19:58:17,738 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-16 19:58:17,738 INFO  L495      AbstractCegarLoop]: Abstraction has 6739 states and 11253 transitions.
[2023-12-16 19:58:17,738 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 87.0) internal successors, (348), 4 states have internal predecessors, (348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-16 19:58:17,739 INFO  L276                IsEmpty]: Start isEmpty. Operand 6739 states and 11253 transitions.
[2023-12-16 19:58:17,741 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 350
[2023-12-16 19:58:17,741 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-16 19:58:17,741 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]
[2023-12-16 19:58:17,742 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2023-12-16 19:58:17,742 INFO  L420      AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-16 19:58:17,743 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-16 19:58:17,743 INFO  L85        PathProgramCache]: Analyzing trace with hash -303505645, now seen corresponding path program 1 times
[2023-12-16 19:58:17,743 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-16 19:58:17,760 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1165945014]
[2023-12-16 19:58:17,760 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-16 19:58:17,760 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-16 19:58:17,872 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-16 19:58:18,204 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-16 19:58:18,204 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-16 19:58:18,204 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1165945014]
[2023-12-16 19:58:18,205 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1165945014] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-16 19:58:18,205 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-16 19:58:18,205 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-12-16 19:58:18,205 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [564077168]
[2023-12-16 19:58:18,205 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-16 19:58:18,208 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-12-16 19:58:18,210 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-16 19:58:18,211 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-12-16 19:58:18,211 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-12-16 19:58:18,211 INFO  L87              Difference]: Start difference. First operand 6739 states and 11253 transitions. Second operand  has 4 states, 4 states have (on average 87.25) internal successors, (349), 4 states have internal predecessors, (349), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-16 19:58:18,384 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-16 19:58:18,384 INFO  L93              Difference]: Finished difference Result 13237 states and 22104 transitions.
[2023-12-16 19:58:18,384 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-12-16 19:58:18,385 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 87.25) internal successors, (349), 4 states have internal predecessors, (349), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 349
[2023-12-16 19:58:18,385 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-16 19:58:18,403 INFO  L225             Difference]: With dead ends: 13237
[2023-12-16 19:58:18,404 INFO  L226             Difference]: Without dead ends: 6742
[2023-12-16 19:58:18,412 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
[2023-12-16 19:58:18,413 INFO  L413           NwaCegarLoop]: 11248 mSDtfsCounter, 1 mSDsluCounter, 22489 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 33737 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
[2023-12-16 19:58:18,414 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 33737 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-12-16 19:58:18,423 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 6742 states.
[2023-12-16 19:58:18,500 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 6742 to 6741.
[2023-12-16 19:58:18,519 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 6741 states, 6740 states have (on average 1.6698813056379822) internal successors, (11255), 6740 states have internal predecessors, (11255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-16 19:58:18,535 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 6741 states to 6741 states and 11255 transitions.
[2023-12-16 19:58:18,535 INFO  L78                 Accepts]: Start accepts. Automaton has 6741 states and 11255 transitions. Word has length 349
[2023-12-16 19:58:18,535 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-16 19:58:18,536 INFO  L495      AbstractCegarLoop]: Abstraction has 6741 states and 11255 transitions.
[2023-12-16 19:58:18,536 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 87.25) internal successors, (349), 4 states have internal predecessors, (349), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-16 19:58:18,537 INFO  L276                IsEmpty]: Start isEmpty. Operand 6741 states and 11255 transitions.
[2023-12-16 19:58:18,539 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 351
[2023-12-16 19:58:18,540 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-16 19:58:18,540 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]
[2023-12-16 19:58:18,540 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2023-12-16 19:58:18,541 INFO  L420      AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-16 19:58:18,541 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-16 19:58:18,541 INFO  L85        PathProgramCache]: Analyzing trace with hash -1029170805, now seen corresponding path program 1 times
[2023-12-16 19:58:18,541 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-16 19:58:18,541 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1816875813]
[2023-12-16 19:58:18,542 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-16 19:58:18,542 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-16 19:58:18,657 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-16 19:58:19,106 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-16 19:58:19,107 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-16 19:58:19,107 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1816875813]
[2023-12-16 19:58:19,107 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1816875813] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-16 19:58:19,107 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-16 19:58:19,108 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-12-16 19:58:19,108 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [638789402]
[2023-12-16 19:58:19,108 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-16 19:58:19,108 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-12-16 19:58:19,108 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-16 19:58:19,109 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-12-16 19:58:19,111 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-12-16 19:58:19,111 INFO  L87              Difference]: Start difference. First operand 6741 states and 11255 transitions. Second operand  has 4 states, 4 states have (on average 87.5) internal successors, (350), 4 states have internal predecessors, (350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-16 19:58:19,366 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-16 19:58:19,366 INFO  L93              Difference]: Finished difference Result 19725 states and 32938 transitions.
[2023-12-16 19:58:19,367 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-12-16 19:58:19,367 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 87.5) internal successors, (350), 4 states have internal predecessors, (350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 350
[2023-12-16 19:58:19,367 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-16 19:58:19,413 INFO  L225             Difference]: With dead ends: 19725
[2023-12-16 19:58:19,413 INFO  L226             Difference]: Without dead ends: 13228
[2023-12-16 19:58:19,426 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
[2023-12-16 19:58:19,428 INFO  L413           NwaCegarLoop]: 11689 mSDtfsCounter, 10831 mSDsluCounter, 22926 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10831 SdHoareTripleChecker+Valid, 34615 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2023-12-16 19:58:19,429 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [10831 Valid, 34615 Invalid, 20 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-12-16 19:58:19,441 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 13228 states.
[2023-12-16 19:58:19,547 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 13228 to 6743.
[2023-12-16 19:58:19,556 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 6743 states, 6742 states have (on average 1.6696825867695047) internal successors, (11257), 6742 states have internal predecessors, (11257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-16 19:58:19,574 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 6743 states to 6743 states and 11257 transitions.
[2023-12-16 19:58:19,574 INFO  L78                 Accepts]: Start accepts. Automaton has 6743 states and 11257 transitions. Word has length 350
[2023-12-16 19:58:19,575 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-16 19:58:19,575 INFO  L495      AbstractCegarLoop]: Abstraction has 6743 states and 11257 transitions.
[2023-12-16 19:58:19,576 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 87.5) internal successors, (350), 4 states have internal predecessors, (350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-16 19:58:19,577 INFO  L276                IsEmpty]: Start isEmpty. Operand 6743 states and 11257 transitions.
[2023-12-16 19:58:19,581 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 352
[2023-12-16 19:58:19,581 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-16 19:58:19,585 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]
[2023-12-16 19:58:19,586 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2023-12-16 19:58:19,586 INFO  L420      AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-16 19:58:19,586 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-16 19:58:19,586 INFO  L85        PathProgramCache]: Analyzing trace with hash -632642057, now seen corresponding path program 1 times
[2023-12-16 19:58:19,586 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-16 19:58:19,586 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [530613614]
[2023-12-16 19:58:19,587 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-16 19:58:19,587 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-16 19:58:19,696 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-16 19:58:20,143 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-16 19:58:20,143 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-16 19:58:20,143 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [530613614]
[2023-12-16 19:58:20,143 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [530613614] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-16 19:58:20,144 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-16 19:58:20,144 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2023-12-16 19:58:20,144 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1101894935]
[2023-12-16 19:58:20,144 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-16 19:58:20,144 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2023-12-16 19:58:20,144 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-16 19:58:20,145 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2023-12-16 19:58:20,145 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30
[2023-12-16 19:58:20,145 INFO  L87              Difference]: Start difference. First operand 6743 states and 11257 transitions. Second operand  has 6 states, 6 states have (on average 58.5) internal successors, (351), 5 states have internal predecessors, (351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-16 19:58:20,691 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-16 19:58:20,691 INFO  L93              Difference]: Finished difference Result 19998 states and 33389 transitions.
[2023-12-16 19:58:20,692 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. 
[2023-12-16 19:58:20,692 INFO  L78                 Accepts]: Start accepts. Automaton has  has 6 states, 6 states have (on average 58.5) internal successors, (351), 5 states have internal predecessors, (351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 351
[2023-12-16 19:58:20,692 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-16 19:58:20,712 INFO  L225             Difference]: With dead ends: 19998
[2023-12-16 19:58:20,713 INFO  L226             Difference]: Without dead ends: 13499
[2023-12-16 19:58:20,721 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90
[2023-12-16 19:58:20,725 INFO  L413           NwaCegarLoop]: 11684 mSDtfsCounter, 43861 mSDsluCounter, 34163 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43861 SdHoareTripleChecker+Valid, 45847 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-12-16 19:58:20,726 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [43861 Valid, 45847 Invalid, 42 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [2 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-12-16 19:58:20,743 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 13499 states.
[2023-12-16 19:58:20,857 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 13499 to 7010.
[2023-12-16 19:58:20,867 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7010 states, 7009 states have (on average 1.6695676986731345) internal successors, (11702), 7009 states have internal predecessors, (11702), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-16 19:58:20,881 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7010 states to 7010 states and 11702 transitions.
[2023-12-16 19:58:20,881 INFO  L78                 Accepts]: Start accepts. Automaton has 7010 states and 11702 transitions. Word has length 351
[2023-12-16 19:58:20,882 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-16 19:58:20,882 INFO  L495      AbstractCegarLoop]: Abstraction has 7010 states and 11702 transitions.
[2023-12-16 19:58:20,882 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 6 states, 6 states have (on average 58.5) internal successors, (351), 5 states have internal predecessors, (351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-16 19:58:20,882 INFO  L276                IsEmpty]: Start isEmpty. Operand 7010 states and 11702 transitions.
[2023-12-16 19:58:21,107 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 4587
[2023-12-16 19:58:21,108 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-16 19:58:21,109 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-12-16 19:58:21,110 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3
[2023-12-16 19:58:21,110 INFO  L420      AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-16 19:58:21,110 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-16 19:58:21,111 INFO  L85        PathProgramCache]: Analyzing trace with hash -2146184359, now seen corresponding path program 1 times
[2023-12-16 19:58:21,111 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-16 19:58:21,111 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1647847567]
[2023-12-16 19:58:21,112 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-16 19:58:21,112 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-16 19:58:21,503 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-16 19:58:21,504 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [113838099]
[2023-12-16 19:58:21,505 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-16 19:58:21,505 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-16 19:58:21,505 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-16 19:58:21,507 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)
[2023-12-16 19:58:21,523 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process
[2023-12-16 19:58:26,562 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-16 19:58:26,702 INFO  L262         TraceCheckSpWp]: Trace formula consists of 20806 conjuncts, 6 conjunts are in the unsatisfiable core
[2023-12-16 19:58:26,798 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-16 19:58:26,903 INFO  L134       CoverageAnalysis]: Checked inductivity of 184 backedges. 184 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-16 19:58:26,903 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-16 19:58:26,903 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-16 19:58:26,903 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1647847567]
[2023-12-16 19:58:26,904 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-16 19:58:26,904 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [113838099]
[2023-12-16 19:58:26,904 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [113838099] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-16 19:58:26,904 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-16 19:58:26,904 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-12-16 19:58:26,904 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1381445588]
[2023-12-16 19:58:26,904 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-16 19:58:26,908 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-12-16 19:58:26,908 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-16 19:58:26,911 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-12-16 19:58:26,911 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-12-16 19:58:26,912 INFO  L87              Difference]: Start difference. First operand 7010 states and 11702 transitions. Second operand  has 4 states, 4 states have (on average 1146.5) internal successors, (4586), 4 states have internal predecessors, (4586), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-16 19:58:27,202 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-16 19:58:27,202 INFO  L93              Difference]: Finished difference Result 13519 states and 22569 transitions.
[2023-12-16 19:58:27,203 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-12-16 19:58:27,205 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 1146.5) internal successors, (4586), 4 states have internal predecessors, (4586), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4586
[2023-12-16 19:58:27,206 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-16 19:58:27,214 INFO  L225             Difference]: With dead ends: 13519
[2023-12-16 19:58:27,215 INFO  L226             Difference]: Without dead ends: 7020
[2023-12-16 19:58:27,221 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 4585 GetRequests, 4583 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-12-16 19:58:27,222 INFO  L413           NwaCegarLoop]: 11248 mSDtfsCounter, 12 mSDsluCounter, 22486 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 33734 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
[2023-12-16 19:58:27,222 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 33734 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-12-16 19:58:27,229 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 7020 states.
[2023-12-16 19:58:27,302 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 7020 to 7012.
[2023-12-16 19:58:27,313 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7012 states, 7011 states have (on average 1.6693766937669376) internal successors, (11704), 7011 states have internal predecessors, (11704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-16 19:58:27,327 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7012 states to 7012 states and 11704 transitions.
[2023-12-16 19:58:27,327 INFO  L78                 Accepts]: Start accepts. Automaton has 7012 states and 11704 transitions. Word has length 4586
[2023-12-16 19:58:27,328 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-16 19:58:27,328 INFO  L495      AbstractCegarLoop]: Abstraction has 7012 states and 11704 transitions.
[2023-12-16 19:58:27,330 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 1146.5) internal successors, (4586), 4 states have internal predecessors, (4586), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-16 19:58:27,330 INFO  L276                IsEmpty]: Start isEmpty. Operand 7012 states and 11704 transitions.
[2023-12-16 19:58:27,419 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 4587
[2023-12-16 19:58:27,420 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-16 19:58:27,422 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 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[2023-12-16 19:58:27,493 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0
[2023-12-16 19:58:27,640 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-16 19:58:27,641 INFO  L420      AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-16 19:58:27,641 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-16 19:58:27,642 INFO  L85        PathProgramCache]: Analyzing trace with hash 1658576715, now seen corresponding path program 1 times
[2023-12-16 19:58:27,642 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-16 19:58:27,643 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [113646263]
[2023-12-16 19:58:27,643 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-16 19:58:27,643 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-16 19:58:28,055 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-16 19:58:28,055 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1953642649]
[2023-12-16 19:58:28,056 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-16 19:58:28,056 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-16 19:58:28,057 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-16 19:58:28,057 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)
[2023-12-16 19:58:28,083 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process
[2023-12-16 19:58:33,153 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-16 19:58:33,321 INFO  L262         TraceCheckSpWp]: Trace formula consists of 20807 conjuncts, 8 conjunts are in the unsatisfiable core
[2023-12-16 19:58:33,407 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-16 19:58:34,820 INFO  L134       CoverageAnalysis]: Checked inductivity of 184 backedges. 184 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-16 19:58:34,821 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-16 19:58:34,821 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-16 19:58:34,821 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [113646263]
[2023-12-16 19:58:34,821 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-16 19:58:34,821 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1953642649]
[2023-12-16 19:58:34,821 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1953642649] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-16 19:58:34,821 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-16 19:58:34,821 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2023-12-16 19:58:34,822 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2044343215]
[2023-12-16 19:58:34,822 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-16 19:58:34,825 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-12-16 19:58:34,825 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-16 19:58:34,828 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-12-16 19:58:34,828 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-12-16 19:58:34,829 INFO  L87              Difference]: Start difference. First operand 7012 states and 11704 transitions. Second operand  has 4 states, 4 states have (on average 1146.5) internal successors, (4586), 3 states have internal predecessors, (4586), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-16 19:58:38,232 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-16 19:58:38,232 INFO  L93              Difference]: Finished difference Result 13848 states and 23115 transitions.
[2023-12-16 19:58:38,235 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-12-16 19:58:38,237 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 1146.5) internal successors, (4586), 3 states have internal predecessors, (4586), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4586
[2023-12-16 19:58:38,238 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-16 19:58:38,248 INFO  L225             Difference]: With dead ends: 13848
[2023-12-16 19:58:38,249 INFO  L226             Difference]: Without dead ends: 7347
[2023-12-16 19:58:38,258 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 4586 GetRequests, 4583 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2023-12-16 19:58:38,258 INFO  L413           NwaCegarLoop]: 9508 mSDtfsCounter, 21540 mSDsluCounter, 670 mSDsCounter, 0 mSdLazyCounter, 3481 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21540 SdHoareTripleChecker+Valid, 10178 SdHoareTripleChecker+Invalid, 3481 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3481 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time
[2023-12-16 19:58:38,258 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [21540 Valid, 10178 Invalid, 3481 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3481 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time]
[2023-12-16 19:58:38,265 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 7347 states.
[2023-12-16 19:58:38,340 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 7347 to 7012.
[2023-12-16 19:58:38,349 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7012 states, 7011 states have (on average 1.6692340607616603) internal successors, (11703), 7011 states have internal predecessors, (11703), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-16 19:58:38,358 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7012 states to 7012 states and 11703 transitions.
[2023-12-16 19:58:38,359 INFO  L78                 Accepts]: Start accepts. Automaton has 7012 states and 11703 transitions. Word has length 4586
[2023-12-16 19:58:38,360 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-16 19:58:38,360 INFO  L495      AbstractCegarLoop]: Abstraction has 7012 states and 11703 transitions.
[2023-12-16 19:58:38,361 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 1146.5) internal successors, (4586), 3 states have internal predecessors, (4586), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-16 19:58:38,362 INFO  L276                IsEmpty]: Start isEmpty. Operand 7012 states and 11703 transitions.
[2023-12-16 19:58:38,450 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 4588
[2023-12-16 19:58:38,450 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-16 19:58:38,452 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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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[2023-12-16 19:58:38,510 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0
[2023-12-16 19:58:38,672 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5
[2023-12-16 19:58:38,672 INFO  L420      AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-16 19:58:38,672 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-16 19:58:38,674 INFO  L85        PathProgramCache]: Analyzing trace with hash -1387092896, now seen corresponding path program 1 times
[2023-12-16 19:58:38,674 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-16 19:58:38,674 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [415843004]
[2023-12-16 19:58:38,674 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-16 19:58:38,674 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-16 19:58:39,060 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-16 19:58:39,060 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [432328819]
[2023-12-16 19:58:39,061 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-16 19:58:39,061 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-16 19:58:39,061 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-16 19:58:39,062 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)
[2023-12-16 19:58:39,084 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process
[2023-12-16 19:58:43,452 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-16 19:58:43,591 INFO  L262         TraceCheckSpWp]: Trace formula consists of 20808 conjuncts, 8 conjunts are in the unsatisfiable core
[2023-12-16 19:58:43,660 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-16 19:58:45,189 INFO  L134       CoverageAnalysis]: Checked inductivity of 184 backedges. 184 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-16 19:58:45,189 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-16 19:58:45,190 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-16 19:58:45,190 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [415843004]
[2023-12-16 19:58:45,190 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-16 19:58:45,190 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [432328819]
[2023-12-16 19:58:45,190 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [432328819] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-16 19:58:45,190 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-16 19:58:45,190 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2023-12-16 19:58:45,190 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [738746406]
[2023-12-16 19:58:45,191 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-16 19:58:45,194 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-12-16 19:58:45,194 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-16 19:58:45,197 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-12-16 19:58:45,197 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-12-16 19:58:45,198 INFO  L87              Difference]: Start difference. First operand 7012 states and 11703 transitions. Second operand  has 4 states, 4 states have (on average 1146.75) internal successors, (4587), 3 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)
[2023-12-16 19:58:49,294 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-16 19:58:49,294 INFO  L93              Difference]: Finished difference Result 14066 states and 23483 transitions.
[2023-12-16 19:58:49,296 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-12-16 19:58:49,297 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 1146.75) internal successors, (4587), 3 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 4587
[2023-12-16 19:58:49,298 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-16 19:58:49,307 INFO  L225             Difference]: With dead ends: 14066
[2023-12-16 19:58:49,307 INFO  L226             Difference]: Without dead ends: 7565
[2023-12-16 19:58:49,312 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 4587 GetRequests, 4584 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2023-12-16 19:58:49,313 INFO  L413           NwaCegarLoop]: 9870 mSDtfsCounter, 21423 mSDsluCounter, 1033 mSDsCounter, 0 mSdLazyCounter, 3493 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21423 SdHoareTripleChecker+Valid, 10903 SdHoareTripleChecker+Invalid, 3493 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3493 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time
[2023-12-16 19:58:49,313 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [21423 Valid, 10903 Invalid, 3493 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3493 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time]
[2023-12-16 19:58:49,320 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 7565 states.
[2023-12-16 19:58:49,382 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 7565 to 7012.
[2023-12-16 19:58:49,392 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7012 states, 7011 states have (on average 1.6690914277563829) internal successors, (11702), 7011 states have internal predecessors, (11702), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-16 19:58:49,400 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7012 states to 7012 states and 11702 transitions.
[2023-12-16 19:58:49,400 INFO  L78                 Accepts]: Start accepts. Automaton has 7012 states and 11702 transitions. Word has length 4587
[2023-12-16 19:58:49,401 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-16 19:58:49,401 INFO  L495      AbstractCegarLoop]: Abstraction has 7012 states and 11702 transitions.
[2023-12-16 19:58:49,402 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 1146.75) internal successors, (4587), 3 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)
[2023-12-16 19:58:49,403 INFO  L276                IsEmpty]: Start isEmpty. Operand 7012 states and 11702 transitions.
Received shutdown request...
[2023-12-16 19:58:49,502 WARN  L340       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Timeout while monitored process is still running, waiting 1000 ms for graceful end
[2023-12-16 19:58:49,504 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
[2023-12-16 19:58:49,523 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 4589
[2023-12-16 19:58:49,524 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-16 19:58:49,526 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 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[2023-12-16 19:58:49,595 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0
[2023-12-16 19:58:49,726 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-16 19:58:49,727 WARN  L619      AbstractCegarLoop]: Verification canceled: while executing NwaCegarLoop.
[2023-12-16 19:58:49,729 INFO  L805   garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining)
[2023-12-16 19:58:49,732 INFO  L445         BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1]
[2023-12-16 19:58:49,734 INFO  L179   ceAbstractionStarter]: Computing trace abstraction results
[2023-12-16 19:58:49,737 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.12 07:58:49 BoogieIcfgContainer
[2023-12-16 19:58:49,737 INFO  L131        PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2023-12-16 19:58:49,737 INFO  L158              Benchmark]: Toolchain (without parser) took 52493.47ms. Allocated memory was 203.4MB in the beginning and 4.3GB in the end (delta: 4.1GB). Free memory was 151.6MB in the beginning and 3.0GB in the end (delta: -2.8GB). Peak memory consumption was 1.2GB. Max. memory is 8.0GB.
[2023-12-16 19:58:49,737 INFO  L158              Benchmark]: CDTParser took 0.09ms. Allocated memory is still 203.4MB. Free memory is still 150.9MB. There was no memory consumed. Max. memory is 8.0GB.
[2023-12-16 19:58:49,737 INFO  L158              Benchmark]: CACSL2BoogieTranslator took 1313.45ms. Allocated memory was 203.4MB in the beginning and 272.6MB in the end (delta: 69.2MB). Free memory was 151.6MB in the beginning and 107.8MB in the end (delta: 43.8MB). Peak memory consumption was 152.2MB. Max. memory is 8.0GB.
[2023-12-16 19:58:49,738 INFO  L158              Benchmark]: Boogie Procedure Inliner took 2611.93ms. Allocated memory was 272.6MB in the beginning and 2.8GB in the end (delta: 2.5GB). Free memory was 107.8MB in the beginning and 2.3GB in the end (delta: -2.2GB). Peak memory consumption was 369.1MB. Max. memory is 8.0GB.
[2023-12-16 19:58:49,739 INFO  L158              Benchmark]: Boogie Preprocessor took 2513.25ms. Allocated memory is still 2.8GB. Free memory was 2.3GB in the beginning and 2.2GB in the end (delta: 169.3MB). Peak memory consumption was 260.0MB. Max. memory is 8.0GB.
[2023-12-16 19:58:49,739 INFO  L158              Benchmark]: RCFGBuilder took 11953.98ms. Allocated memory was 2.8GB in the beginning and 4.3GB in the end (delta: 1.5GB). Free memory was 2.2GB in the beginning and 2.7GB in the end (delta: -544.7MB). Peak memory consumption was 928.5MB. Max. memory is 8.0GB.
[2023-12-16 19:58:49,739 INFO  L158              Benchmark]: TraceAbstraction took 34095.24ms. Allocated memory is still 4.3GB. Free memory was 2.7GB in the beginning and 3.0GB in the end (delta: -280.1MB). There was no memory consumed. Max. memory is 8.0GB.
[2023-12-16 19:58:49,741 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 203.4MB. Free memory is still 150.9MB. There was no memory consumed. Max. memory is 8.0GB.
 * CACSL2BoogieTranslator took 1313.45ms. Allocated memory was 203.4MB in the beginning and 272.6MB in the end (delta: 69.2MB). Free memory was 151.6MB in the beginning and 107.8MB in the end (delta: 43.8MB). Peak memory consumption was 152.2MB. Max. memory is 8.0GB.
 * Boogie Procedure Inliner took 2611.93ms. Allocated memory was 272.6MB in the beginning and 2.8GB in the end (delta: 2.5GB). Free memory was 107.8MB in the beginning and 2.3GB in the end (delta: -2.2GB). Peak memory consumption was 369.1MB. Max. memory is 8.0GB.
 * Boogie Preprocessor took 2513.25ms. Allocated memory is still 2.8GB. Free memory was 2.3GB in the beginning and 2.2GB in the end (delta: 169.3MB). Peak memory consumption was 260.0MB. Max. memory is 8.0GB.
 * RCFGBuilder took 11953.98ms. Allocated memory was 2.8GB in the beginning and 4.3GB in the end (delta: 1.5GB). Free memory was 2.2GB in the beginning and 2.7GB in the end (delta: -544.7MB). Peak memory consumption was 928.5MB. Max. memory is 8.0GB.
 * TraceAbstraction took 34095.24ms. Allocated memory is still 4.3GB. Free memory was 2.7GB in the beginning and 3.0GB in the end (delta: -280.1MB). There was no memory consumed. 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 executing NwaCegarLoop.
  - StatisticsResult: Ultimate Automizer benchmark data
    CFG has 1 procedures, 6739 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 34.0s, OverallIterations: 7, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.6s, AutomataDifference: 9.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.2s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 97669 SdHoareTripleChecker+Valid, 7.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 97669 mSDsluCounter, 202753 SdHoareTripleChecker+Invalid, 6.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 126258 mSDsCounter, 4 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 7078 IncrementalHoareTripleChecker+Invalid, 7082 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 4 mSolverCounterUnsat, 76495 mSDtfsCounter, 7078 mSolverCounterSat, 0.5s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 13781 GetRequests, 13759 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=7012occurred in iteration=5, InterpolantAutomatonStates: 31, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.9s AutomataMinimizationTime, 7 MinimizatonAttempts, 13871 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 4.0s SsaConstructionTime, 8.9s SatisfiabilityAnalysisTime, 5.8s InterpolantComputationTime, 15157 NumberOfCodeBlocks, 15157 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 15150 ConstructedInterpolants, 0 QuantifiedInterpolants, 23203 SizeOfPredicates, 3 NumberOfNonLiveVariables, 62421 ConjunctsInSsa, 22 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 PerfectInterpolantSequences, 552/552 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