/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.rushhour.2.prop1-func-interl.c


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


This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m
[2023-12-16 19:51:41,944 INFO  L188        SettingsManager]: Resetting all preferences to default values...
[2023-12-16 19:51:42,012 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 19:51:42,016 WARN  L101        SettingsManager]: Preference file contains the following unknown settings:
[2023-12-16 19:51:42,017 WARN  L103        SettingsManager]:   * de.uni_freiburg.informatik.ultimate.core.Log level for class
[2023-12-16 19:51:42,038 INFO  L130        SettingsManager]: Preferences different from defaults after loading the file:
[2023-12-16 19:51:42,038 INFO  L151        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2023-12-16 19:51:42,039 INFO  L153        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2023-12-16 19:51:42,039 INFO  L151        SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults:
[2023-12-16 19:51:42,042 INFO  L153        SettingsManager]:  * Use memory slicer=true
[2023-12-16 19:51:42,042 INFO  L151        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2023-12-16 19:51:42,043 INFO  L153        SettingsManager]:  * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2023-12-16 19:51:42,043 INFO  L151        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2023-12-16 19:51:42,044 INFO  L153        SettingsManager]:  * Create parallel compositions if possible=false
[2023-12-16 19:51:42,044 INFO  L153        SettingsManager]:  * Use SBE=true
[2023-12-16 19:51:42,044 INFO  L151        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2023-12-16 19:51:42,045 INFO  L153        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2023-12-16 19:51:42,045 INFO  L153        SettingsManager]:  * Overapproximate operations on floating types=true
[2023-12-16 19:51:42,045 INFO  L153        SettingsManager]:  * Check division by zero=IGNORE
[2023-12-16 19:51:42,046 INFO  L153        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2023-12-16 19:51:42,046 INFO  L153        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2023-12-16 19:51:42,046 INFO  L153        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2023-12-16 19:51:42,046 INFO  L153        SettingsManager]:  * Allow undefined functions=false
[2023-12-16 19:51:42,047 INFO  L153        SettingsManager]:  * Check if freed pointer was valid=false
[2023-12-16 19:51:42,047 INFO  L153        SettingsManager]:  * Use constant arrays=true
[2023-12-16 19:51:42,047 INFO  L151        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2023-12-16 19:51:42,047 INFO  L153        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2023-12-16 19:51:42,048 INFO  L153        SettingsManager]:  * Only consider context switches at boundaries of atomic blocks=true
[2023-12-16 19:51:42,048 INFO  L153        SettingsManager]:  * SMT solver=External_DefaultMode
[2023-12-16 19:51:42,048 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2023-12-16 19:51:42,049 INFO  L151        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2023-12-16 19:51:42,049 INFO  L153        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2023-12-16 19:51:42,049 INFO  L153        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopHeads
[2023-12-16 19:51:42,049 INFO  L153        SettingsManager]:  * Trace refinement strategy=CAMEL
[2023-12-16 19:51:42,049 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2023-12-16 19:51:42,049 INFO  L153        SettingsManager]:  * Apply one-shot large block encoding in concurrent analysis=false
[2023-12-16 19:51:42,049 INFO  L153        SettingsManager]:  * Automaton type used in concurrency analysis=PETRI_NET
[2023-12-16 19:51:42,050 INFO  L153        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2023-12-16 19:51:42,050 INFO  L153        SettingsManager]:  * Order on configurations for Petri net unfoldings=DBO
[2023-12-16 19:51:42,050 INFO  L153        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2023-12-16 19:51:42,050 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$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true
[2023-12-16 19:51:42,227 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2023-12-16 19:51:42,244 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2023-12-16 19:51:42,246 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2023-12-16 19:51:42,246 INFO  L270        PluginConnector]: Initializing CDTParser...
[2023-12-16 19:51:42,247 INFO  L274        PluginConnector]: CDTParser initialized
[2023-12-16 19:51:42,247 INFO  L431   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.rushhour.2.prop1-func-interl.c
[2023-12-16 19:51:43,150 INFO  L533              CDTParser]: Created temporary CDT project at NULL
[2023-12-16 19:51:43,577 INFO  L384              CDTParser]: Found 1 translation units.
[2023-12-16 19:51:43,577 INFO  L180              CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.rushhour.2.prop1-func-interl.c
[2023-12-16 19:51:43,630 INFO  L427              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/74832602d/89768e5acf7b45e3a1daf9dfc9215424/FLAGc73bdc64f
[2023-12-16 19:51:43,644 INFO  L435              CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/74832602d/89768e5acf7b45e3a1daf9dfc9215424
[2023-12-16 19:51:43,646 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2023-12-16 19:51:43,647 INFO  L133        ToolchainWalker]: Walking toolchain with 5 elements.
[2023-12-16 19:51:43,649 INFO  L112        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2023-12-16 19:51:43,649 INFO  L270        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2023-12-16 19:51:43,652 INFO  L274        PluginConnector]: CACSL2BoogieTranslator initialized
[2023-12-16 19:51:43,652 INFO  L184        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 07:51:43" (1/1) ...
[2023-12-16 19:51:43,653 INFO  L204        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4a134d92 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 07:51:43, skipping insertion in model container
[2023-12-16 19:51:43,653 INFO  L184        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 07:51:43" (1/1) ...
[2023-12-16 19:51:43,798 INFO  L177         MainTranslator]: Built tables and reachable declarations
[2023-12-16 19:51:44,047 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.rushhour.2.prop1-func-interl.c[1175,1188]
[2023-12-16 19:51:44,974 INFO  L209          PostProcessor]: Analyzing one entry point: main
[2023-12-16 19:51:44,983 INFO  L202         MainTranslator]: Completed pre-run
[2023-12-16 19:51:44,991 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.rushhour.2.prop1-func-interl.c[1175,1188]
[2023-12-16 19:51:45,668 INFO  L209          PostProcessor]: Analyzing one entry point: main
[2023-12-16 19:51:45,679 INFO  L206         MainTranslator]: Completed translation
[2023-12-16 19:51:45,680 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 07:51:45 WrapperNode
[2023-12-16 19:51:45,680 INFO  L131        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2023-12-16 19:51:45,681 INFO  L112        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2023-12-16 19:51:45,681 INFO  L270        PluginConnector]: Initializing Boogie Procedure Inliner...
[2023-12-16 19:51:45,681 INFO  L274        PluginConnector]: Boogie Procedure Inliner initialized
[2023-12-16 19:51:45,686 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 07:51:45" (1/1) ...
[2023-12-16 19:51:45,911 INFO  L184        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 07:51:45" (1/1) ...
[2023-12-16 19:51:48,512 INFO  L138                Inliner]: procedures = 17, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 38656
[2023-12-16 19:51:48,513 INFO  L131        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2023-12-16 19:51:48,513 INFO  L112        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2023-12-16 19:51:48,514 INFO  L270        PluginConnector]: Initializing Boogie Preprocessor...
[2023-12-16 19:51:48,514 INFO  L274        PluginConnector]: Boogie Preprocessor initialized
[2023-12-16 19:51:48,527 INFO  L184        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 07:51:45" (1/1) ...
[2023-12-16 19:51:48,527 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 07:51:45" (1/1) ...
[2023-12-16 19:51:49,584 INFO  L184        PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 07:51:45" (1/1) ...
[2023-12-16 19:51:49,924 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 19:51:49,924 INFO  L184        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 07:51:45" (1/1) ...
[2023-12-16 19:51:49,924 INFO  L184        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 07:51:45" (1/1) ...
[2023-12-16 19:51:50,726 INFO  L184        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 07:51:45" (1/1) ...
[2023-12-16 19:51:50,810 INFO  L184        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 07:51:45" (1/1) ...
[2023-12-16 19:51:50,937 INFO  L184        PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 07:51:45" (1/1) ...
[2023-12-16 19:51:51,042 INFO  L184        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 07:51:45" (1/1) ...
[2023-12-16 19:51:51,442 INFO  L131        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2023-12-16 19:51:51,450 INFO  L112        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2023-12-16 19:51:51,450 INFO  L270        PluginConnector]: Initializing RCFGBuilder...
[2023-12-16 19:51:51,450 INFO  L274        PluginConnector]: RCFGBuilder initialized
[2023-12-16 19:51:51,451 INFO  L184        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 07:51:45" (1/1) ...
[2023-12-16 19:51:51,455 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2023-12-16 19:51:51,461 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-16 19:51:51,471 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 19:51:51,473 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 19:51:51,491 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2023-12-16 19:51:51,492 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int#0
[2023-12-16 19:51:51,492 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2023-12-16 19:51:51,492 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2023-12-16 19:51:53,456 INFO  L241             CfgBuilder]: Building ICFG
[2023-12-16 19:51:53,457 INFO  L267             CfgBuilder]: Building CFG for each procedure with an implementation
[2023-12-16 19:52:07,361 INFO  L282             CfgBuilder]: Performing block encoding
[2023-12-16 19:52:07,905 INFO  L304             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2023-12-16 19:52:07,905 INFO  L309             CfgBuilder]: Removed 1 assume(true) statements.
[2023-12-16 19:52:07,906 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 07:52:07 BoogieIcfgContainer
[2023-12-16 19:52:07,907 INFO  L131        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2023-12-16 19:52:07,909 INFO  L112        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2023-12-16 19:52:07,909 INFO  L270        PluginConnector]: Initializing TraceAbstraction...
[2023-12-16 19:52:07,911 INFO  L274        PluginConnector]: TraceAbstraction initialized
[2023-12-16 19:52:07,912 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.12 07:51:43" (1/3) ...
[2023-12-16 19:52:07,913 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b7eb2c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 07:52:07, skipping insertion in model container
[2023-12-16 19:52:07,913 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 07:51:45" (2/3) ...
[2023-12-16 19:52:07,913 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b7eb2c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 07:52:07, skipping insertion in model container
[2023-12-16 19:52:07,913 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 07:52:07" (3/3) ...
[2023-12-16 19:52:07,914 INFO  L112   eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.rushhour.2.prop1-func-interl.c
[2023-12-16 19:52:07,925 INFO  L204   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2023-12-16 19:52:07,925 INFO  L163   ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2023-12-16 19:52:08,023 INFO  L356      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2023-12-16 19:52:08,027 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;@36ce8d21, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2023-12-16 19:52:08,028 INFO  L358      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2023-12-16 19:52:08,044 INFO  L276                IsEmpty]: Start isEmpty. Operand  has 6751 states, 6749 states have (on average 1.6706178693139724) internal successors, (11275), 6750 states have internal predecessors, (11275), 0 states have call successors, (0), 0 states 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 19:52:08,066 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 183
[2023-12-16 19:52:08,066 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-16 19:52:08,067 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]
[2023-12-16 19:52:08,067 INFO  L420      AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-16 19:52:08,072 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-16 19:52:08,073 INFO  L85        PathProgramCache]: Analyzing trace with hash 1758366592, now seen corresponding path program 1 times
[2023-12-16 19:52:08,078 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-16 19:52:08,079 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [389915938]
[2023-12-16 19:52:08,079 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-16 19:52:08,079 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-16 19:52:08,425 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-16 19:52:08,970 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 19:52:08,970 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-16 19:52:08,970 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [389915938]
[2023-12-16 19:52:08,971 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [389915938] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-16 19:52:08,971 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-16 19:52:08,971 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-12-16 19:52:08,973 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1118186080]
[2023-12-16 19:52:08,974 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-16 19:52:08,977 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-12-16 19:52:08,978 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-16 19:52:08,995 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-12-16 19:52:08,996 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-12-16 19:52:09,009 INFO  L87              Difference]: Start difference. First operand  has 6751 states, 6749 states have (on average 1.6706178693139724) internal successors, (11275), 6750 states have internal predecessors, (11275), 0 states have call successors, (0), 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 45.5) internal successors, (182), 4 states have internal predecessors, (182), 0 states have call successors, (0), 0 states 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 19:52:09,275 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-16 19:52:09,275 INFO  L93              Difference]: Finished difference Result 13291 states and 22201 transitions.
[2023-12-16 19:52:09,277 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-12-16 19:52:09,278 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 45.5) internal successors, (182), 4 states have internal predecessors, (182), 0 states have call successors, (0), 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 182
[2023-12-16 19:52:09,279 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-16 19:52:09,306 INFO  L225             Difference]: With dead ends: 13291
[2023-12-16 19:52:09,306 INFO  L226             Difference]: Without dead ends: 6751
[2023-12-16 19:52:09,318 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 19:52:09,320 INFO  L413           NwaCegarLoop]: 11268 mSDtfsCounter, 1 mSDsluCounter, 22531 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 33799 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-12-16 19:52:09,321 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 33799 Invalid, 13 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-12-16 19:52:09,342 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 6751 states.
[2023-12-16 19:52:09,452 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 6751 to 6751.
[2023-12-16 19:52:09,465 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 6751 states, 6750 states have (on average 1.670074074074074) internal successors, (11273), 6750 states have internal predecessors, (11273), 0 states have call successors, (0), 0 states 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 19:52:09,479 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 6751 states to 6751 states and 11273 transitions.
[2023-12-16 19:52:09,480 INFO  L78                 Accepts]: Start accepts. Automaton has 6751 states and 11273 transitions. Word has length 182
[2023-12-16 19:52:09,482 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-16 19:52:09,482 INFO  L495      AbstractCegarLoop]: Abstraction has 6751 states and 11273 transitions.
[2023-12-16 19:52:09,482 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 45.5) internal successors, (182), 4 states have internal predecessors, (182), 0 states have call successors, (0), 0 states 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 19:52:09,482 INFO  L276                IsEmpty]: Start isEmpty. Operand 6751 states and 11273 transitions.
[2023-12-16 19:52:09,485 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 184
[2023-12-16 19:52:09,485 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-16 19:52:09,486 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]
[2023-12-16 19:52:09,486 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2023-12-16 19:52:09,486 INFO  L420      AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-16 19:52:09,486 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-16 19:52:09,487 INFO  L85        PathProgramCache]: Analyzing trace with hash -1323484480, now seen corresponding path program 1 times
[2023-12-16 19:52:09,487 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-16 19:52:09,487 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1475294893]
[2023-12-16 19:52:09,487 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-16 19:52:09,487 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-16 19:52:09,888 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-16 19:52:10,155 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 19:52:10,156 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-16 19:52:10,156 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1475294893]
[2023-12-16 19:52:10,157 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1475294893] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-16 19:52:10,157 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-16 19:52:10,157 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-12-16 19:52:10,157 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [149278532]
[2023-12-16 19:52:10,157 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-16 19:52:10,159 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-12-16 19:52:10,162 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-16 19:52:10,163 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-12-16 19:52:10,163 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-12-16 19:52:10,164 INFO  L87              Difference]: Start difference. First operand 6751 states and 11273 transitions. Second operand  has 4 states, 4 states have (on average 45.75) internal successors, (183), 4 states have internal predecessors, (183), 0 states have call successors, (0), 0 states 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 19:52:10,394 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-16 19:52:10,395 INFO  L93              Difference]: Finished difference Result 13294 states and 22199 transitions.
[2023-12-16 19:52:10,395 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-12-16 19:52:10,396 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 45.75) internal successors, (183), 4 states have internal predecessors, (183), 0 states have call successors, (0), 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 183
[2023-12-16 19:52:10,398 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-16 19:52:10,416 INFO  L225             Difference]: With dead ends: 13294
[2023-12-16 19:52:10,417 INFO  L226             Difference]: Without dead ends: 6754
[2023-12-16 19:52:10,425 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 19:52:10,426 INFO  L413           NwaCegarLoop]: 11268 mSDtfsCounter, 1 mSDsluCounter, 22529 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 33797 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-12-16 19:52:10,427 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 33797 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-12-16 19:52:10,437 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 6754 states.
[2023-12-16 19:52:10,517 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 6754 to 6753.
[2023-12-16 19:52:10,538 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 6753 states, 6752 states have (on average 1.6698755924170616) internal successors, (11275), 6752 states have internal predecessors, (11275), 0 states have call successors, (0), 0 states 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 19:52:10,551 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 6753 states to 6753 states and 11275 transitions.
[2023-12-16 19:52:10,551 INFO  L78                 Accepts]: Start accepts. Automaton has 6753 states and 11275 transitions. Word has length 183
[2023-12-16 19:52:10,551 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-16 19:52:10,552 INFO  L495      AbstractCegarLoop]: Abstraction has 6753 states and 11275 transitions.
[2023-12-16 19:52:10,552 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 45.75) internal successors, (183), 4 states have internal predecessors, (183), 0 states have call successors, (0), 0 states 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 19:52:10,552 INFO  L276                IsEmpty]: Start isEmpty. Operand 6753 states and 11275 transitions.
[2023-12-16 19:52:10,553 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 185
[2023-12-16 19:52:10,553 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-16 19:52:10,553 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]
[2023-12-16 19:52:10,554 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2023-12-16 19:52:10,554 INFO  L420      AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-16 19:52:10,554 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-16 19:52:10,554 INFO  L85        PathProgramCache]: Analyzing trace with hash 1711222682, now seen corresponding path program 1 times
[2023-12-16 19:52:10,554 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-16 19:52:10,554 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1019993706]
[2023-12-16 19:52:10,555 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-16 19:52:10,555 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-16 19:52:10,746 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-16 19:52:10,953 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 19:52:10,953 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-16 19:52:10,954 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1019993706]
[2023-12-16 19:52:10,954 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1019993706] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-16 19:52:10,954 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-16 19:52:10,954 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-12-16 19:52:10,954 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1000959777]
[2023-12-16 19:52:10,954 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-16 19:52:10,955 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-12-16 19:52:10,955 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-16 19:52:10,956 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-12-16 19:52:10,957 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-12-16 19:52:10,958 INFO  L87              Difference]: Start difference. First operand 6753 states and 11275 transitions. Second operand  has 4 states, 4 states have (on average 46.0) internal successors, (184), 4 states have internal predecessors, (184), 0 states have call successors, (0), 0 states 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 19:52:11,416 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-16 19:52:11,417 INFO  L93              Difference]: Finished difference Result 19827 states and 33108 transitions.
[2023-12-16 19:52:11,417 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-12-16 19:52:11,417 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 46.0) internal successors, (184), 4 states have internal predecessors, (184), 0 states have call successors, (0), 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 184
[2023-12-16 19:52:11,418 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-16 19:52:11,464 INFO  L225             Difference]: With dead ends: 19827
[2023-12-16 19:52:11,464 INFO  L226             Difference]: Without dead ends: 13285
[2023-12-16 19:52:11,474 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 19:52:11,476 INFO  L413           NwaCegarLoop]: 11349 mSDtfsCounter, 10906 mSDsluCounter, 22606 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10906 SdHoareTripleChecker+Valid, 33955 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-12-16 19:52:11,477 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [10906 Valid, 33955 Invalid, 20 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-12-16 19:52:11,490 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 13285 states.
[2023-12-16 19:52:11,613 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 13285 to 6755.
[2023-12-16 19:52:11,624 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 6755 states, 6754 states have (on average 1.66967722830915) internal successors, (11277), 6754 states have internal predecessors, (11277), 0 states have call successors, (0), 0 states 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 19:52:11,640 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 6755 states to 6755 states and 11277 transitions.
[2023-12-16 19:52:11,640 INFO  L78                 Accepts]: Start accepts. Automaton has 6755 states and 11277 transitions. Word has length 184
[2023-12-16 19:52:11,641 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-16 19:52:11,641 INFO  L495      AbstractCegarLoop]: Abstraction has 6755 states and 11277 transitions.
[2023-12-16 19:52:11,642 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 46.0) internal successors, (184), 4 states have internal predecessors, (184), 0 states have call successors, (0), 0 states 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 19:52:11,643 INFO  L276                IsEmpty]: Start isEmpty. Operand 6755 states and 11277 transitions.
[2023-12-16 19:52:11,645 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 186
[2023-12-16 19:52:11,646 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-16 19:52:11,649 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]
[2023-12-16 19:52:11,649 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2023-12-16 19:52:11,650 INFO  L420      AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-16 19:52:11,650 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-16 19:52:11,650 INFO  L85        PathProgramCache]: Analyzing trace with hash -1186763866, now seen corresponding path program 1 times
[2023-12-16 19:52:11,650 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-16 19:52:11,650 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [274147117]
[2023-12-16 19:52:11,650 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-16 19:52:11,651 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-16 19:52:11,827 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-16 19:52:12,134 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 19:52:12,134 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-16 19:52:12,135 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [274147117]
[2023-12-16 19:52:12,135 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [274147117] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-16 19:52:12,135 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-16 19:52:12,135 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-12-16 19:52:12,135 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [250178401]
[2023-12-16 19:52:12,135 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-16 19:52:12,135 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-12-16 19:52:12,136 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-16 19:52:12,136 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-12-16 19:52:12,136 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2023-12-16 19:52:12,136 INFO  L87              Difference]: Start difference. First operand 6755 states and 11277 transitions. Second operand  has 5 states, 5 states have (on average 37.0) internal successors, (185), 4 states have internal predecessors, (185), 0 states have call successors, (0), 0 states 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 19:52:12,512 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-16 19:52:12,512 INFO  L93              Difference]: Finished difference Result 19884 states and 33199 transitions.
[2023-12-16 19:52:12,512 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2023-12-16 19:52:12,513 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 37.0) internal successors, (185), 4 states have internal predecessors, (185), 0 states have call successors, (0), 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 185
[2023-12-16 19:52:12,513 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-16 19:52:12,536 INFO  L225             Difference]: With dead ends: 19884
[2023-12-16 19:52:12,537 INFO  L226             Difference]: Without dead ends: 13340
[2023-12-16 19:52:12,549 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56
[2023-12-16 19:52:12,549 INFO  L413           NwaCegarLoop]: 11345 mSDtfsCounter, 43911 mSDsluCounter, 22527 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43911 SdHoareTripleChecker+Valid, 33872 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-12-16 19:52:12,550 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [43911 Valid, 33872 Invalid, 21 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-12-16 19:52:12,566 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 13340 states.
[2023-12-16 19:52:12,690 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 13340 to 6806.
[2023-12-16 19:52:12,700 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 6806 states, 6805 states have (on average 1.6696546656869948) internal successors, (11362), 6805 states have internal predecessors, (11362), 0 states have call successors, (0), 0 states 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 19:52:12,712 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 6806 states to 6806 states and 11362 transitions.
[2023-12-16 19:52:12,712 INFO  L78                 Accepts]: Start accepts. Automaton has 6806 states and 11362 transitions. Word has length 185
[2023-12-16 19:52:12,712 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-16 19:52:12,713 INFO  L495      AbstractCegarLoop]: Abstraction has 6806 states and 11362 transitions.
[2023-12-16 19:52:12,713 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 37.0) internal successors, (185), 4 states have internal predecessors, (185), 0 states have call successors, (0), 0 states 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 19:52:12,713 INFO  L276                IsEmpty]: Start isEmpty. Operand 6806 states and 11362 transitions.
[2023-12-16 19:52:12,947 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 4491
[2023-12-16 19:52:12,948 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-16 19:52:12,950 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:52:12,950 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3
[2023-12-16 19:52:12,950 INFO  L420      AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-16 19:52:12,950 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-16 19:52:12,951 INFO  L85        PathProgramCache]: Analyzing trace with hash 311883883, now seen corresponding path program 1 times
[2023-12-16 19:52:12,951 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-16 19:52:12,951 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [713794860]
[2023-12-16 19:52:12,952 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-16 19:52:12,952 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-16 19:52:13,628 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-16 19:52:13,629 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1436570934]
[2023-12-16 19:52:13,630 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-16 19:52:13,631 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-16 19:52:13,631 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-16 19:52:13,633 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 19:52:13,636 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 19:52:23,527 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-16 19:52:23,795 INFO  L262         TraceCheckSpWp]: Trace formula consists of 39062 conjuncts, 8 conjunts are in the unsatisfiable core
[2023-12-16 19:52:23,909 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-16 19:52:25,009 INFO  L134       CoverageAnalysis]: Checked inductivity of 40 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-16 19:52:25,010 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-16 19:52:25,010 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-16 19:52:25,010 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [713794860]
[2023-12-16 19:52:25,010 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-16 19:52:25,010 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1436570934]
[2023-12-16 19:52:25,010 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1436570934] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-16 19:52:25,010 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-16 19:52:25,011 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2023-12-16 19:52:25,011 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1947542580]
[2023-12-16 19:52:25,011 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-16 19:52:25,014 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-12-16 19:52:25,015 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-16 19:52:25,018 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-12-16 19:52:25,018 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-12-16 19:52:25,019 INFO  L87              Difference]: Start difference. First operand 6806 states and 11362 transitions. Second operand  has 4 states, 4 states have (on average 1122.5) internal successors, (4490), 3 states have internal predecessors, (4490), 0 states have call successors, (0), 0 states 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 19:52:28,744 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-16 19:52:28,745 INFO  L93              Difference]: Finished difference Result 13726 states and 22915 transitions.
[2023-12-16 19:52:28,745 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-12-16 19:52:28,746 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 1122.5) internal successors, (4490), 3 states have internal predecessors, (4490), 0 states have call successors, (0), 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 4490
[2023-12-16 19:52:28,748 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-16 19:52:28,761 INFO  L225             Difference]: With dead ends: 13726
[2023-12-16 19:52:28,762 INFO  L226             Difference]: Without dead ends: 7182
[2023-12-16 19:52:28,769 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 4490 GetRequests, 4487 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 19:52:28,770 INFO  L413           NwaCegarLoop]: 8538 mSDtfsCounter, 21771 mSDsluCounter, 893 mSDsCounter, 0 mSdLazyCounter, 3613 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21771 SdHoareTripleChecker+Valid, 9431 SdHoareTripleChecker+Invalid, 3613 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3613 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time
[2023-12-16 19:52:28,770 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [21771 Valid, 9431 Invalid, 3613 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3613 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time]
[2023-12-16 19:52:28,778 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 7182 states.
[2023-12-16 19:52:28,851 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 7182 to 6806.
[2023-12-16 19:52:28,861 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 6806 states, 6805 states have (on average 1.6695077149155033) internal successors, (11361), 6805 states have internal predecessors, (11361), 0 states have call successors, (0), 0 states 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 19:52:28,878 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 6806 states to 6806 states and 11361 transitions.
[2023-12-16 19:52:28,878 INFO  L78                 Accepts]: Start accepts. Automaton has 6806 states and 11361 transitions. Word has length 4490
[2023-12-16 19:52:28,879 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-16 19:52:28,879 INFO  L495      AbstractCegarLoop]: Abstraction has 6806 states and 11361 transitions.
[2023-12-16 19:52:28,880 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 1122.5) internal successors, (4490), 3 states have internal predecessors, (4490), 0 states have call successors, (0), 0 states 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 19:52:28,881 INFO  L276                IsEmpty]: Start isEmpty. Operand 6806 states and 11361 transitions.
[2023-12-16 19:52:29,043 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 4492
[2023-12-16 19:52:29,043 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-16 19:52:29,045 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:52:29,190 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0
[2023-12-16 19:52:29,268 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 19:52:29,269 INFO  L420      AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-16 19:52:29,270 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-16 19:52:29,271 INFO  L85        PathProgramCache]: Analyzing trace with hash 1319086556, now seen corresponding path program 1 times
[2023-12-16 19:52:29,271 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-16 19:52:29,271 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1248659071]
[2023-12-16 19:52:29,272 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-16 19:52:29,272 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-16 19:52:29,853 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-16 19:52:29,853 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1994910732]
[2023-12-16 19:52:29,854 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-16 19:52:29,854 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-16 19:52:29,854 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-16 19:52:29,855 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 19:52:29,857 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process
Received shutdown request...
[2023-12-16 19:52:37,802 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 19:52:37,802 WARN  L340       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Timeout while monitored process is still running, waiting 1000 ms for graceful end
[2023-12-16 19:52:38,885 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0
[2023-12-16 19:52:39,012 WARN  L435       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forcibly destroying the process
[2023-12-16 19:52:39,041 ERROR L246   FreeRefinementEngine]: Caught known exception: Timeout or Toolchain cancelled by user
[2023-12-16 19:52:39,044 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 137
[2023-12-16 19:52:39,044 INFO  L805   garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining)
[2023-12-16 19:52:39,045 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5
[2023-12-16 19:52:39,045 WARN  L619      AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was analyzing trace of length 4492 with TraceHistMax 2,while AutomatonFreeRefinementEngine was Timeout during CAMEL.
[2023-12-16 19:52:39,049 INFO  L445         BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1]
[2023-12-16 19:52:39,051 INFO  L179   ceAbstractionStarter]: Computing trace abstraction results
[2023-12-16 19:52:39,052 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.12 07:52:39 BoogieIcfgContainer
[2023-12-16 19:52:39,053 INFO  L131        PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2023-12-16 19:52:39,053 INFO  L158              Benchmark]: Toolchain (without parser) took 55406.15ms. Allocated memory was 304.1MB in the beginning and 4.9GB in the end (delta: 4.6GB). Free memory was 233.3MB in the beginning and 3.6GB in the end (delta: -3.3GB). Peak memory consumption was 1.5GB. Max. memory is 8.0GB.
[2023-12-16 19:52:39,053 INFO  L158              Benchmark]: CDTParser took 0.09ms. Allocated memory is still 192.9MB. Free memory is still 141.4MB. There was no memory consumed. Max. memory is 8.0GB.
[2023-12-16 19:52:39,053 INFO  L158              Benchmark]: CACSL2BoogieTranslator took 2031.40ms. Allocated memory was 304.1MB in the beginning and 469.8MB in the end (delta: 165.7MB). Free memory was 232.8MB in the beginning and 218.4MB in the end (delta: 14.4MB). Peak memory consumption was 250.8MB. Max. memory is 8.0GB.
[2023-12-16 19:52:39,054 INFO  L158              Benchmark]: Boogie Procedure Inliner took 2831.86ms. Allocated memory was 469.8MB in the beginning and 2.5GB in the end (delta: 2.0GB). Free memory was 218.4MB in the beginning and 1.8GB in the end (delta: -1.6GB). Peak memory consumption was 445.1MB. Max. memory is 8.0GB.
[2023-12-16 19:52:39,054 INFO  L158              Benchmark]: Boogie Preprocessor took 2929.26ms. Allocated memory was 2.5GB in the beginning and 4.2GB in the end (delta: 1.7GB). Free memory was 1.8GB in the beginning and 3.3GB in the end (delta: -1.5GB). Peak memory consumption was 238.6MB. Max. memory is 8.0GB.
[2023-12-16 19:52:39,054 INFO  L158              Benchmark]: RCFGBuilder took 16457.12ms. Allocated memory is still 4.2GB. Free memory was 3.3GB in the beginning and 2.8GB in the end (delta: 546.8MB). Peak memory consumption was 1.0GB. Max. memory is 8.0GB.
[2023-12-16 19:52:39,054 INFO  L158              Benchmark]: TraceAbstraction took 31143.86ms. Allocated memory was 4.2GB in the beginning and 4.9GB in the end (delta: 733.0MB). Free memory was 2.8GB in the beginning and 3.6GB in the end (delta: -777.6MB). Peak memory consumption was 202.3MB. Max. memory is 8.0GB.
[2023-12-16 19:52:39,055 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 192.9MB. Free memory is still 141.4MB. There was no memory consumed. Max. memory is 8.0GB.
 * CACSL2BoogieTranslator took 2031.40ms. Allocated memory was 304.1MB in the beginning and 469.8MB in the end (delta: 165.7MB). Free memory was 232.8MB in the beginning and 218.4MB in the end (delta: 14.4MB). Peak memory consumption was 250.8MB. Max. memory is 8.0GB.
 * Boogie Procedure Inliner took 2831.86ms. Allocated memory was 469.8MB in the beginning and 2.5GB in the end (delta: 2.0GB). Free memory was 218.4MB in the beginning and 1.8GB in the end (delta: -1.6GB). Peak memory consumption was 445.1MB. Max. memory is 8.0GB.
 * Boogie Preprocessor took 2929.26ms. Allocated memory was 2.5GB in the beginning and 4.2GB in the end (delta: 1.7GB). Free memory was 1.8GB in the beginning and 3.3GB in the end (delta: -1.5GB). Peak memory consumption was 238.6MB. Max. memory is 8.0GB.
 * RCFGBuilder took 16457.12ms. Allocated memory is still 4.2GB. Free memory was 3.3GB in the beginning and 2.8GB in the end (delta: 546.8MB). Peak memory consumption was 1.0GB. Max. memory is 8.0GB.
 * TraceAbstraction took 31143.86ms. Allocated memory was 4.2GB in the beginning and 4.9GB in the end (delta: 733.0MB). Free memory was 2.8GB in the beginning and 3.6GB in the end (delta: -777.6MB). Peak memory consumption was 202.3MB. Max. memory is 8.0GB.
 * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction:
  - StatisticsResult: ErrorAutomatonStatistics
    NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0
  - TimeoutResultAtElement [Line: 21]: Timeout (TraceAbstraction)
    Unable to prove that a call to reach_error is unreachable (line 21). Cancelled while NwaCegarLoop was analyzing trace of length 4492 with TraceHistMax 2,while AutomatonFreeRefinementEngine was Timeout during CAMEL.
  - StatisticsResult: Ultimate Automizer benchmark data
    CFG has 1 procedures, 6751 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 31.1s, OverallIterations: 6, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.4s, AutomataDifference: 5.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 76590 SdHoareTripleChecker+Valid, 3.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 76590 mSDsluCounter, 144854 SdHoareTripleChecker+Invalid, 3.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 91086 mSDsCounter, 1 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 3681 IncrementalHoareTripleChecker+Invalid, 3682 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1 mSolverCounterUnsat, 53768 mSDtfsCounter, 3681 mSolverCounterSat, 0.3s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 4512 GetRequests, 4497 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=6806occurred in iteration=4, InterpolantAutomatonStates: 22, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.7s AutomataMinimizationTime, 5 MinimizatonAttempts, 13441 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 3.1s SsaConstructionTime, 6.0s SatisfiabilityAnalysisTime, 2.8s InterpolantComputationTime, 5224 NumberOfCodeBlocks, 5224 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 5219 ConstructedInterpolants, 0 QuantifiedInterpolants, 8094 SizeOfPredicates, 1 NumberOfNonLiveVariables, 39062 ConjunctsInSsa, 8 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 PerfectInterpolantSequences, 40/40 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