/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-32bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation false -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/forester-heap/sll-rb-cnstr_1-2.i


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


This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m
[2023-12-21 03:23:44,190 INFO  L188        SettingsManager]: Resetting all preferences to default values...
[2023-12-21 03:23:44,263 INFO  L114        SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf
[2023-12-21 03:23:44,270 WARN  L101        SettingsManager]: Preference file contains the following unknown settings:
[2023-12-21 03:23:44,271 WARN  L103        SettingsManager]:   * de.uni_freiburg.informatik.ultimate.core.Log level for class
[2023-12-21 03:23:44,300 INFO  L130        SettingsManager]: Preferences different from defaults after loading the file:
[2023-12-21 03:23:44,301 INFO  L151        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2023-12-21 03:23:44,301 INFO  L153        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2023-12-21 03:23:44,302 INFO  L151        SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults:
[2023-12-21 03:23:44,308 INFO  L153        SettingsManager]:  * Use memory slicer=true
[2023-12-21 03:23:44,308 INFO  L151        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2023-12-21 03:23:44,309 INFO  L153        SettingsManager]:  * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2023-12-21 03:23:44,310 INFO  L151        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2023-12-21 03:23:44,311 INFO  L153        SettingsManager]:  * Create parallel compositions if possible=false
[2023-12-21 03:23:44,311 INFO  L153        SettingsManager]:  * Use SBE=true
[2023-12-21 03:23:44,312 INFO  L151        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2023-12-21 03:23:44,312 INFO  L153        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2023-12-21 03:23:44,312 INFO  L153        SettingsManager]:  * sizeof long=4
[2023-12-21 03:23:44,312 INFO  L153        SettingsManager]:  * Overapproximate operations on floating types=true
[2023-12-21 03:23:44,314 INFO  L153        SettingsManager]:  * sizeof POINTER=4
[2023-12-21 03:23:44,314 INFO  L153        SettingsManager]:  * Check division by zero=IGNORE
[2023-12-21 03:23:44,315 INFO  L153        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2023-12-21 03:23:44,315 INFO  L153        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2023-12-21 03:23:44,315 INFO  L153        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2023-12-21 03:23:44,315 INFO  L153        SettingsManager]:  * Allow undefined functions=false
[2023-12-21 03:23:44,316 INFO  L153        SettingsManager]:  * sizeof long double=12
[2023-12-21 03:23:44,316 INFO  L153        SettingsManager]:  * Check if freed pointer was valid=false
[2023-12-21 03:23:44,316 INFO  L153        SettingsManager]:  * Use constant arrays=true
[2023-12-21 03:23:44,317 INFO  L151        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2023-12-21 03:23:44,317 INFO  L153        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2023-12-21 03:23:44,318 INFO  L153        SettingsManager]:  * Only consider context switches at boundaries of atomic blocks=true
[2023-12-21 03:23:44,318 INFO  L153        SettingsManager]:  * SMT solver=External_DefaultMode
[2023-12-21 03:23:44,318 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2023-12-21 03:23:44,319 INFO  L151        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2023-12-21 03:23:44,319 INFO  L153        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2023-12-21 03:23:44,319 INFO  L153        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopHeads
[2023-12-21 03:23:44,319 INFO  L153        SettingsManager]:  * Trace refinement strategy=CAMEL
[2023-12-21 03:23:44,319 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2023-12-21 03:23:44,320 INFO  L153        SettingsManager]:  * Apply one-shot large block encoding in concurrent analysis=false
[2023-12-21 03:23:44,320 INFO  L153        SettingsManager]:  * Automaton type used in concurrency analysis=PETRI_NET
[2023-12-21 03:23:44,320 INFO  L153        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2023-12-21 03:23:44,320 INFO  L153        SettingsManager]:  * Order on configurations for Petri net unfoldings=DBO
[2023-12-21 03:23:44,320 INFO  L153        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2023-12-21 03:23:44,320 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$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> false
[2023-12-21 03:23:44,570 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2023-12-21 03:23:44,594 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2023-12-21 03:23:44,596 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2023-12-21 03:23:44,597 INFO  L270        PluginConnector]: Initializing CDTParser...
[2023-12-21 03:23:44,597 INFO  L274        PluginConnector]: CDTParser initialized
[2023-12-21 03:23:44,598 INFO  L431   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/forester-heap/sll-rb-cnstr_1-2.i
[2023-12-21 03:23:45,687 INFO  L533              CDTParser]: Created temporary CDT project at NULL
[2023-12-21 03:23:45,915 INFO  L384              CDTParser]: Found 1 translation units.
[2023-12-21 03:23:45,915 INFO  L180              CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/forester-heap/sll-rb-cnstr_1-2.i
[2023-12-21 03:23:45,925 INFO  L427              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/214bf2b62/5c67e5bba7d94c31ad3a3d312d693bb0/FLAG9f9763c7a
[2023-12-21 03:23:45,939 INFO  L435              CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/214bf2b62/5c67e5bba7d94c31ad3a3d312d693bb0
[2023-12-21 03:23:45,941 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2023-12-21 03:23:45,942 INFO  L133        ToolchainWalker]: Walking toolchain with 5 elements.
[2023-12-21 03:23:45,943 INFO  L112        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2023-12-21 03:23:45,943 INFO  L270        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2023-12-21 03:23:45,947 INFO  L274        PluginConnector]: CACSL2BoogieTranslator initialized
[2023-12-21 03:23:45,947 INFO  L184        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 03:23:45" (1/1) ...
[2023-12-21 03:23:45,948 INFO  L204        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3da0d1b1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:23:45, skipping insertion in model container
[2023-12-21 03:23:45,948 INFO  L184        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 03:23:45" (1/1) ...
[2023-12-21 03:23:45,978 INFO  L177         MainTranslator]: Built tables and reachable declarations
[2023-12-21 03:23:46,177 WARN  L239   ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/forester-heap/sll-rb-cnstr_1-2.i[22480,22493]
[2023-12-21 03:23:46,181 WARN  L239   ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/forester-heap/sll-rb-cnstr_1-2.i[22552,22565]
[2023-12-21 03:23:46,183 WARN  L239   ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/forester-heap/sll-rb-cnstr_1-2.i[22720,22733]
[2023-12-21 03:23:46,187 INFO  L209          PostProcessor]: Analyzing one entry point: main
[2023-12-21 03:23:46,196 INFO  L202         MainTranslator]: Completed pre-run
[2023-12-21 03:23:46,228 WARN  L239   ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/forester-heap/sll-rb-cnstr_1-2.i[22480,22493]
[2023-12-21 03:23:46,229 WARN  L239   ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/forester-heap/sll-rb-cnstr_1-2.i[22552,22565]
[2023-12-21 03:23:46,230 WARN  L239   ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/forester-heap/sll-rb-cnstr_1-2.i[22720,22733]
[2023-12-21 03:23:46,231 INFO  L209          PostProcessor]: Analyzing one entry point: main
[2023-12-21 03:23:46,250 INFO  L206         MainTranslator]: Completed translation
[2023-12-21 03:23:46,251 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:23:46 WrapperNode
[2023-12-21 03:23:46,251 INFO  L131        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2023-12-21 03:23:46,252 INFO  L112        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2023-12-21 03:23:46,252 INFO  L270        PluginConnector]: Initializing Boogie Procedure Inliner...
[2023-12-21 03:23:46,252 INFO  L274        PluginConnector]: Boogie Procedure Inliner initialized
[2023-12-21 03:23:46,257 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:23:46" (1/1) ...
[2023-12-21 03:23:46,265 INFO  L184        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:23:46" (1/1) ...
[2023-12-21 03:23:46,278 INFO  L138                Inliner]: procedures = 119, calls = 33, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 113
[2023-12-21 03:23:46,278 INFO  L131        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2023-12-21 03:23:46,279 INFO  L112        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2023-12-21 03:23:46,279 INFO  L270        PluginConnector]: Initializing Boogie Preprocessor...
[2023-12-21 03:23:46,279 INFO  L274        PluginConnector]: Boogie Preprocessor initialized
[2023-12-21 03:23:46,286 INFO  L184        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:23:46" (1/1) ...
[2023-12-21 03:23:46,286 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:23:46" (1/1) ...
[2023-12-21 03:23:46,292 INFO  L184        PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:23:46" (1/1) ...
[2023-12-21 03:23:46,307 INFO  L175           MemorySlicer]: Split 23 memory accesses to 2 slices as follows [2, 21]. 91 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 9 writes are split as follows [0, 9].
[2023-12-21 03:23:46,308 INFO  L184        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:23:46" (1/1) ...
[2023-12-21 03:23:46,308 INFO  L184        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:23:46" (1/1) ...
[2023-12-21 03:23:46,312 INFO  L184        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:23:46" (1/1) ...
[2023-12-21 03:23:46,314 INFO  L184        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:23:46" (1/1) ...
[2023-12-21 03:23:46,315 INFO  L184        PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:23:46" (1/1) ...
[2023-12-21 03:23:46,316 INFO  L184        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:23:46" (1/1) ...
[2023-12-21 03:23:46,318 INFO  L131        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2023-12-21 03:23:46,318 INFO  L112        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2023-12-21 03:23:46,318 INFO  L270        PluginConnector]: Initializing RCFGBuilder...
[2023-12-21 03:23:46,318 INFO  L274        PluginConnector]: RCFGBuilder initialized
[2023-12-21 03:23:46,319 INFO  L184        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:23:46" (1/1) ...
[2023-12-21 03:23:46,323 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2023-12-21 03:23:46,338 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-21 03:23:46,355 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)
[2023-12-21 03:23:46,359 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
[2023-12-21 03:23:46,377 INFO  L130     BoogieDeclarations]: Found specification of procedure read~int#0
[2023-12-21 03:23:46,377 INFO  L130     BoogieDeclarations]: Found specification of procedure read~int#1
[2023-12-21 03:23:46,377 INFO  L130     BoogieDeclarations]: Found specification of procedure write~int#0
[2023-12-21 03:23:46,377 INFO  L130     BoogieDeclarations]: Found specification of procedure write~int#1
[2023-12-21 03:23:46,377 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap
[2023-12-21 03:23:46,377 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2023-12-21 03:23:46,377 INFO  L130     BoogieDeclarations]: Found specification of procedure write~$Pointer$#0
[2023-12-21 03:23:46,377 INFO  L130     BoogieDeclarations]: Found specification of procedure write~$Pointer$#1
[2023-12-21 03:23:46,378 INFO  L130     BoogieDeclarations]: Found specification of procedure read~$Pointer$#0
[2023-12-21 03:23:46,378 INFO  L130     BoogieDeclarations]: Found specification of procedure read~$Pointer$#1
[2023-12-21 03:23:46,378 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc
[2023-12-21 03:23:46,378 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int#0
[2023-12-21 03:23:46,378 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int#1
[2023-12-21 03:23:46,378 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2023-12-21 03:23:46,378 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2023-12-21 03:23:46,471 INFO  L241             CfgBuilder]: Building ICFG
[2023-12-21 03:23:46,472 INFO  L267             CfgBuilder]: Building CFG for each procedure with an implementation
[2023-12-21 03:23:46,623 INFO  L282             CfgBuilder]: Performing block encoding
[2023-12-21 03:23:46,657 INFO  L304             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2023-12-21 03:23:46,657 INFO  L309             CfgBuilder]: Removed 9 assume(true) statements.
[2023-12-21 03:23:46,658 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 03:23:46 BoogieIcfgContainer
[2023-12-21 03:23:46,658 INFO  L131        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2023-12-21 03:23:46,667 INFO  L112        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2023-12-21 03:23:46,667 INFO  L270        PluginConnector]: Initializing TraceAbstraction...
[2023-12-21 03:23:46,669 INFO  L274        PluginConnector]: TraceAbstraction initialized
[2023-12-21 03:23:46,669 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.12 03:23:45" (1/3) ...
[2023-12-21 03:23:46,670 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44354976 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 03:23:46, skipping insertion in model container
[2023-12-21 03:23:46,670 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:23:46" (2/3) ...
[2023-12-21 03:23:46,670 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44354976 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 03:23:46, skipping insertion in model container
[2023-12-21 03:23:46,670 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 03:23:46" (3/3) ...
[2023-12-21 03:23:46,671 INFO  L112   eAbstractionObserver]: Analyzing ICFG sll-rb-cnstr_1-2.i
[2023-12-21 03:23:46,685 INFO  L204   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2023-12-21 03:23:46,685 INFO  L163   ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations.
[2023-12-21 03:23:46,730 INFO  L356      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2023-12-21 03:23:46,735 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;@d9b364d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2023-12-21 03:23:46,735 INFO  L358      AbstractCegarLoop]: Starting to check reachability of 3 error locations.
[2023-12-21 03:23:46,737 INFO  L276                IsEmpty]: Start isEmpty. Operand  has 26 states, 22 states have (on average 1.9545454545454546) internal successors, (43), 25 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-21 03:23:46,741 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 6
[2023-12-21 03:23:46,741 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-21 03:23:46,741 INFO  L195           NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1]
[2023-12-21 03:23:46,742 INFO  L420      AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-21 03:23:46,745 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-21 03:23:46,745 INFO  L85        PathProgramCache]: Analyzing trace with hash 138222488, now seen corresponding path program 1 times
[2023-12-21 03:23:46,751 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-21 03:23:46,751 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [285695231]
[2023-12-21 03:23:46,751 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-21 03:23:46,752 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-21 03:23:46,850 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-21 03:23:46,914 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-21 03:23:46,914 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-21 03:23:46,914 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [285695231]
[2023-12-21 03:23:46,915 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [285695231] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-21 03:23:46,915 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-21 03:23:46,915 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2023-12-21 03:23:46,916 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1163149590]
[2023-12-21 03:23:46,918 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-21 03:23:46,920 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 2 states
[2023-12-21 03:23:46,921 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-21 03:23:46,946 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants.
[2023-12-21 03:23:46,947 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2023-12-21 03:23:46,948 INFO  L87              Difference]: Start difference. First operand  has 26 states, 22 states have (on average 1.9545454545454546) internal successors, (43), 25 states have internal predecessors, (43), 0 states have call successors, (0), 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 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-21 03:23:46,971 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-21 03:23:46,971 INFO  L93              Difference]: Finished difference Result 48 states and 79 transitions.
[2023-12-21 03:23:46,972 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. 
[2023-12-21 03:23:46,974 INFO  L78                 Accepts]: Start accepts. Automaton has  has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 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 5
[2023-12-21 03:23:46,974 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-21 03:23:46,978 INFO  L225             Difference]: With dead ends: 48
[2023-12-21 03:23:46,979 INFO  L226             Difference]: Without dead ends: 22
[2023-12-21 03:23:46,981 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2023-12-21 03:23:46,984 INFO  L413           NwaCegarLoop]: 29 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2023-12-21 03:23:46,985 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 29 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-12-21 03:23:46,995 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 22 states.
[2023-12-21 03:23:47,003 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22.
[2023-12-21 03:23:47,004 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 22 states, 19 states have (on average 1.3157894736842106) internal successors, (25), 21 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-21 03:23:47,005 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 25 transitions.
[2023-12-21 03:23:47,007 INFO  L78                 Accepts]: Start accepts. Automaton has 22 states and 25 transitions. Word has length 5
[2023-12-21 03:23:47,007 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-21 03:23:47,007 INFO  L495      AbstractCegarLoop]: Abstraction has 22 states and 25 transitions.
[2023-12-21 03:23:47,007 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-21 03:23:47,007 INFO  L276                IsEmpty]: Start isEmpty. Operand 22 states and 25 transitions.
[2023-12-21 03:23:47,008 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 7
[2023-12-21 03:23:47,008 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-21 03:23:47,008 INFO  L195           NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1]
[2023-12-21 03:23:47,009 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2023-12-21 03:23:47,009 INFO  L420      AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-21 03:23:47,009 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-21 03:23:47,009 INFO  L85        PathProgramCache]: Analyzing trace with hash -22439201, now seen corresponding path program 1 times
[2023-12-21 03:23:47,010 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-21 03:23:47,010 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2059654520]
[2023-12-21 03:23:47,010 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-21 03:23:47,011 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-21 03:23:47,039 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-21 03:23:47,118 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-21 03:23:47,118 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-21 03:23:47,118 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2059654520]
[2023-12-21 03:23:47,118 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2059654520] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-21 03:23:47,119 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-21 03:23:47,119 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2023-12-21 03:23:47,119 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [627188813]
[2023-12-21 03:23:47,119 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-21 03:23:47,120 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-12-21 03:23:47,120 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-21 03:23:47,120 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-12-21 03:23:47,120 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-12-21 03:23:47,121 INFO  L87              Difference]: Start difference. First operand 22 states and 25 transitions. Second operand  has 4 states, 4 states have (on average 1.5) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-21 03:23:47,184 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-21 03:23:47,184 INFO  L93              Difference]: Finished difference Result 30 states and 34 transitions.
[2023-12-21 03:23:47,184 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-12-21 03:23:47,185 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 1.5) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 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 6
[2023-12-21 03:23:47,185 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-21 03:23:47,186 INFO  L225             Difference]: With dead ends: 30
[2023-12-21 03:23:47,187 INFO  L226             Difference]: Without dead ends: 28
[2023-12-21 03:23:47,187 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2023-12-21 03:23:47,189 INFO  L413           NwaCegarLoop]: 18 mSDtfsCounter, 40 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2023-12-21 03:23:47,189 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 23 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-12-21 03:23:47,191 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 28 states.
[2023-12-21 03:23:47,194 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 20.
[2023-12-21 03:23:47,194 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 20 states, 18 states have (on average 1.2777777777777777) internal successors, (23), 19 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-21 03:23:47,195 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 23 transitions.
[2023-12-21 03:23:47,195 INFO  L78                 Accepts]: Start accepts. Automaton has 20 states and 23 transitions. Word has length 6
[2023-12-21 03:23:47,195 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-21 03:23:47,195 INFO  L495      AbstractCegarLoop]: Abstraction has 20 states and 23 transitions.
[2023-12-21 03:23:47,195 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 1.5) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-21 03:23:47,196 INFO  L276                IsEmpty]: Start isEmpty. Operand 20 states and 23 transitions.
[2023-12-21 03:23:47,196 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 10
[2023-12-21 03:23:47,196 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-21 03:23:47,196 INFO  L195           NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-12-21 03:23:47,196 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2023-12-21 03:23:47,196 INFO  L420      AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-21 03:23:47,197 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-21 03:23:47,197 INFO  L85        PathProgramCache]: Analyzing trace with hash 1532606602, now seen corresponding path program 1 times
[2023-12-21 03:23:47,197 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-21 03:23:47,197 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2101116699]
[2023-12-21 03:23:47,197 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-21 03:23:47,198 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-21 03:23:47,217 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-21 03:23:47,352 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-21 03:23:47,353 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-21 03:23:47,353 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2101116699]
[2023-12-21 03:23:47,353 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2101116699] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-21 03:23:47,353 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-21 03:23:47,353 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-12-21 03:23:47,353 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [992628095]
[2023-12-21 03:23:47,353 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-21 03:23:47,353 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-12-21 03:23:47,354 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-21 03:23:47,354 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-12-21 03:23:47,354 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2023-12-21 03:23:47,354 INFO  L87              Difference]: Start difference. First operand 20 states and 23 transitions. Second operand  has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-21 03:23:47,435 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-21 03:23:47,435 INFO  L93              Difference]: Finished difference Result 46 states and 52 transitions.
[2023-12-21 03:23:47,436 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2023-12-21 03:23:47,436 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 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 9
[2023-12-21 03:23:47,436 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-21 03:23:47,437 INFO  L225             Difference]: With dead ends: 46
[2023-12-21 03:23:47,437 INFO  L226             Difference]: Without dead ends: 44
[2023-12-21 03:23:47,437 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42
[2023-12-21 03:23:47,438 INFO  L413           NwaCegarLoop]: 19 mSDtfsCounter, 32 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 64 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2023-12-21 03:23:47,438 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 64 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-12-21 03:23:47,439 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 44 states.
[2023-12-21 03:23:47,442 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 27.
[2023-12-21 03:23:47,443 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 27 states, 25 states have (on average 1.24) internal successors, (31), 26 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-21 03:23:47,443 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 31 transitions.
[2023-12-21 03:23:47,443 INFO  L78                 Accepts]: Start accepts. Automaton has 27 states and 31 transitions. Word has length 9
[2023-12-21 03:23:47,443 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-21 03:23:47,443 INFO  L495      AbstractCegarLoop]: Abstraction has 27 states and 31 transitions.
[2023-12-21 03:23:47,443 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-21 03:23:47,444 INFO  L276                IsEmpty]: Start isEmpty. Operand 27 states and 31 transitions.
[2023-12-21 03:23:47,444 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 13
[2023-12-21 03:23:47,444 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-21 03:23:47,444 INFO  L195           NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-12-21 03:23:47,444 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2023-12-21 03:23:47,444 INFO  L420      AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-21 03:23:47,445 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-21 03:23:47,445 INFO  L85        PathProgramCache]: Analyzing trace with hash -400036596, now seen corresponding path program 1 times
[2023-12-21 03:23:47,445 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-21 03:23:47,445 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1801378162]
[2023-12-21 03:23:47,445 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-21 03:23:47,445 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-21 03:23:47,495 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-21 03:23:47,867 INFO  L134       CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-21 03:23:47,867 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-21 03:23:47,867 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1801378162]
[2023-12-21 03:23:47,867 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1801378162] provided 0 perfect and 1 imperfect interpolant sequences
[2023-12-21 03:23:47,867 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1567798515]
[2023-12-21 03:23:47,867 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-21 03:23:47,868 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-21 03:23:47,868 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-21 03:23:47,870 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)
[2023-12-21 03:23:47,898 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process
[2023-12-21 03:23:47,952 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-21 03:23:47,953 INFO  L262         TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 32 conjunts are in the unsatisfiable core
[2023-12-21 03:23:47,958 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-21 03:23:47,990 INFO  L378             Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7
[2023-12-21 03:23:47,995 INFO  L378             Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5
[2023-12-21 03:23:48,051 INFO  L349             Elim1Store]: treesize reduction 18, result has 35.7 percent of original size
[2023-12-21 03:23:48,052 INFO  L378             Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21
[2023-12-21 03:23:48,062 INFO  L190   IndexEqualityManager]: detected not equals via solver
[2023-12-21 03:23:48,063 INFO  L378             Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 26
[2023-12-21 03:23:48,070 INFO  L378             Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11
[2023-12-21 03:23:48,114 INFO  L190   IndexEqualityManager]: detected not equals via solver
[2023-12-21 03:23:48,116 INFO  L378             Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 11
[2023-12-21 03:23:48,126 INFO  L349             Elim1Store]: treesize reduction 4, result has 50.0 percent of original size
[2023-12-21 03:23:48,127 INFO  L378             Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 14
[2023-12-21 03:23:48,165 INFO  L134       CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-21 03:23:48,165 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-12-21 03:23:48,255 INFO  L134       CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-21 03:23:48,256 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1567798515] provided 0 perfect and 2 imperfect interpolant sequences
[2023-12-21 03:23:48,256 INFO  L185   FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2023-12-21 03:23:48,256 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12
[2023-12-21 03:23:48,256 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1819169415]
[2023-12-21 03:23:48,256 INFO  L85    oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2023-12-21 03:23:48,256 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 13 states
[2023-12-21 03:23:48,256 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-21 03:23:48,257 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants.
[2023-12-21 03:23:48,257 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156
[2023-12-21 03:23:48,257 INFO  L87              Difference]: Start difference. First operand 27 states and 31 transitions. Second operand  has 13 states, 13 states have (on average 2.076923076923077) internal successors, (27), 12 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-21 03:23:48,380 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-21 03:23:48,380 INFO  L93              Difference]: Finished difference Result 38 states and 44 transitions.
[2023-12-21 03:23:48,381 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. 
[2023-12-21 03:23:48,381 INFO  L78                 Accepts]: Start accepts. Automaton has  has 13 states, 13 states have (on average 2.076923076923077) internal successors, (27), 12 states have internal predecessors, (27), 0 states have call successors, (0), 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 12
[2023-12-21 03:23:48,381 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-21 03:23:48,381 INFO  L225             Difference]: With dead ends: 38
[2023-12-21 03:23:48,381 INFO  L226             Difference]: Without dead ends: 36
[2023-12-21 03:23:48,382 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=82, Invalid=190, Unknown=0, NotChecked=0, Total=272
[2023-12-21 03:23:48,383 INFO  L413           NwaCegarLoop]: 17 mSDtfsCounter, 58 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 85 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-12-21 03:23:48,383 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 85 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-12-21 03:23:48,383 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 36 states.
[2023-12-21 03:23:48,386 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 18.
[2023-12-21 03:23:48,386 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 18 states, 17 states have (on average 1.2352941176470589) internal successors, (21), 17 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-21 03:23:48,387 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 21 transitions.
[2023-12-21 03:23:48,387 INFO  L78                 Accepts]: Start accepts. Automaton has 18 states and 21 transitions. Word has length 12
[2023-12-21 03:23:48,387 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-21 03:23:48,387 INFO  L495      AbstractCegarLoop]: Abstraction has 18 states and 21 transitions.
[2023-12-21 03:23:48,387 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 13 states, 13 states have (on average 2.076923076923077) internal successors, (27), 12 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-21 03:23:48,387 INFO  L276                IsEmpty]: Start isEmpty. Operand 18 states and 21 transitions.
[2023-12-21 03:23:48,387 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 15
[2023-12-21 03:23:48,388 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-21 03:23:48,388 INFO  L195           NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-12-21 03:23:48,395 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0
[2023-12-21 03:23:48,593 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-21 03:23:48,593 INFO  L420      AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-21 03:23:48,594 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-21 03:23:48,594 INFO  L85        PathProgramCache]: Analyzing trace with hash -1631357124, now seen corresponding path program 1 times
[2023-12-21 03:23:48,594 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-21 03:23:48,594 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [254761904]
[2023-12-21 03:23:48,594 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-21 03:23:48,594 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-21 03:23:48,604 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-21 03:23:48,630 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-21 03:23:48,631 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-21 03:23:48,631 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [254761904]
[2023-12-21 03:23:48,631 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [254761904] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-21 03:23:48,631 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-21 03:23:48,631 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2023-12-21 03:23:48,632 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2009384326]
[2023-12-21 03:23:48,632 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-21 03:23:48,632 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-12-21 03:23:48,633 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-21 03:23:48,633 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-12-21 03:23:48,634 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2023-12-21 03:23:48,634 INFO  L87              Difference]: Start difference. First operand 18 states and 21 transitions. Second operand  has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-21 03:23:48,675 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-21 03:23:48,675 INFO  L93              Difference]: Finished difference Result 34 states and 39 transitions.
[2023-12-21 03:23:48,676 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2023-12-21 03:23:48,676 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 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 14
[2023-12-21 03:23:48,676 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-21 03:23:48,676 INFO  L225             Difference]: With dead ends: 34
[2023-12-21 03:23:48,676 INFO  L226             Difference]: Without dead ends: 26
[2023-12-21 03:23:48,677 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30
[2023-12-21 03:23:48,678 INFO  L413           NwaCegarLoop]: 14 mSDtfsCounter, 9 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2023-12-21 03:23:48,679 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 41 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-12-21 03:23:48,680 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 26 states.
[2023-12-21 03:23:48,688 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 20.
[2023-12-21 03:23:48,688 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 20 states, 19 states have (on average 1.2105263157894737) internal successors, (23), 19 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-21 03:23:48,688 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 23 transitions.
[2023-12-21 03:23:48,689 INFO  L78                 Accepts]: Start accepts. Automaton has 20 states and 23 transitions. Word has length 14
[2023-12-21 03:23:48,690 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-21 03:23:48,691 INFO  L495      AbstractCegarLoop]: Abstraction has 20 states and 23 transitions.
[2023-12-21 03:23:48,692 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-21 03:23:48,695 INFO  L276                IsEmpty]: Start isEmpty. Operand 20 states and 23 transitions.
[2023-12-21 03:23:48,695 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 15
[2023-12-21 03:23:48,695 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-21 03:23:48,695 INFO  L195           NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-12-21 03:23:48,695 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4
[2023-12-21 03:23:48,695 INFO  L420      AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-21 03:23:48,696 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-21 03:23:48,696 INFO  L85        PathProgramCache]: Analyzing trace with hash -1631297542, now seen corresponding path program 1 times
[2023-12-21 03:23:48,697 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-21 03:23:48,697 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [806681122]
[2023-12-21 03:23:48,697 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-21 03:23:48,697 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-21 03:23:48,708 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is sat
[2023-12-21 03:23:48,708 INFO  L356             TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders.
[2023-12-21 03:23:48,712 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is sat
[2023-12-21 03:23:48,725 INFO  L130   FreeRefinementEngine]: Strategy CAMEL found a feasible trace
[2023-12-21 03:23:48,725 INFO  L360         BasicCegarLoop]: Counterexample is feasible
[2023-12-21 03:23:48,726 INFO  L805   garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining)
[2023-12-21 03:23:48,727 INFO  L805   garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 3 remaining)
[2023-12-21 03:23:48,727 INFO  L805   garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (0 of 3 remaining)
[2023-12-21 03:23:48,727 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5
[2023-12-21 03:23:48,729 INFO  L445         BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1]
[2023-12-21 03:23:48,732 INFO  L179   ceAbstractionStarter]: Computing trace abstraction results
[2023-12-21 03:23:48,745 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.12 03:23:48 BoogieIcfgContainer
[2023-12-21 03:23:48,745 INFO  L131        PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2023-12-21 03:23:48,745 INFO  L158              Benchmark]: Toolchain (without parser) took 2803.30ms. Allocated memory is still 242.2MB. Free memory was 191.5MB in the beginning and 102.5MB in the end (delta: 89.1MB). Peak memory consumption was 89.9MB. Max. memory is 8.0GB.
[2023-12-21 03:23:48,745 INFO  L158              Benchmark]: CDTParser took 0.83ms. Allocated memory is still 180.4MB. Free memory is still 131.6MB. There was no memory consumed. Max. memory is 8.0GB.
[2023-12-21 03:23:48,746 INFO  L158              Benchmark]: CACSL2BoogieTranslator took 308.00ms. Allocated memory is still 242.2MB. Free memory was 191.5MB in the beginning and 173.0MB in the end (delta: 18.5MB). Peak memory consumption was 17.8MB. Max. memory is 8.0GB.
[2023-12-21 03:23:48,746 INFO  L158              Benchmark]: Boogie Procedure Inliner took 26.39ms. Allocated memory is still 242.2MB. Free memory was 173.0MB in the beginning and 170.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB.
[2023-12-21 03:23:48,746 INFO  L158              Benchmark]: Boogie Preprocessor took 38.93ms. Allocated memory is still 242.2MB. Free memory was 170.9MB in the beginning and 168.5MB in the end (delta: 2.4MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB.
[2023-12-21 03:23:48,746 INFO  L158              Benchmark]: RCFGBuilder took 339.68ms. Allocated memory is still 242.2MB. Free memory was 168.5MB in the beginning and 152.8MB in the end (delta: 15.7MB). Peak memory consumption was 15.7MB. Max. memory is 8.0GB.
[2023-12-21 03:23:48,746 INFO  L158              Benchmark]: TraceAbstraction took 2078.45ms. Allocated memory is still 242.2MB. Free memory was 152.1MB in the beginning and 102.5MB in the end (delta: 49.6MB). Peak memory consumption was 51.1MB. Max. memory is 8.0GB.
[2023-12-21 03:23:48,748 INFO  L338   ainManager$Toolchain]: #######################  End [Toolchain 1] #######################
 --- Results ---
 * Results from de.uni_freiburg.informatik.ultimate.core:
  - StatisticsResult: Toolchain Benchmarks
    Benchmark results are:
 * CDTParser took 0.83ms. Allocated memory is still 180.4MB. Free memory is still 131.6MB. There was no memory consumed. Max. memory is 8.0GB.
 * CACSL2BoogieTranslator took 308.00ms. Allocated memory is still 242.2MB. Free memory was 191.5MB in the beginning and 173.0MB in the end (delta: 18.5MB). Peak memory consumption was 17.8MB. Max. memory is 8.0GB.
 * Boogie Procedure Inliner took 26.39ms. Allocated memory is still 242.2MB. Free memory was 173.0MB in the beginning and 170.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB.
 * Boogie Preprocessor took 38.93ms. Allocated memory is still 242.2MB. Free memory was 170.9MB in the beginning and 168.5MB in the end (delta: 2.4MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB.
 * RCFGBuilder took 339.68ms. Allocated memory is still 242.2MB. Free memory was 168.5MB in the beginning and 152.8MB in the end (delta: 15.7MB). Peak memory consumption was 15.7MB. Max. memory is 8.0GB.
 * TraceAbstraction took 2078.45ms. Allocated memory is still 242.2MB. Free memory was 152.1MB in the beginning and 102.5MB in the end (delta: 49.6MB). Peak memory consumption was 51.1MB. 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
  - CounterExampleResult [Line: 1049]: a call to reach_error is reachable
    a call to reach_error is reachable
We found a FailurePath: 
[L1006]              SLL* list = malloc(sizeof(SLL));
[L1007]              list->next = ((void*)0)
[L1008]              list->colour = BLACK
[L1010]              SLL* end = list;
         VAL         [end={-1:0}, list={-1:0}]
[L1013]  COND FALSE  !(__VERIFIER_nondet_int())
[L1034]              end = ((void*)0)
[L1035]              end = list
         VAL         [end={-1:0}, list={-1:0}]
[L1038]  COND FALSE  !(!(((void*)0) != end))
         VAL         [end={-1:0}, list={-1:0}]
[L1039]  EXPR        end->colour
[L1039]  COND FALSE  !(!(BLACK == end->colour))
[L1041]  COND TRUE   ((void*)0) != end
[L1043]  EXPR        end->colour
[L1043]  COND FALSE  !(RED == end->colour)
[L1049]  EXPR        end->next
[L1049]  COND TRUE   !(end->next)
[L1049]              reach_error()
         VAL         [end={-1:0}, list={-1:0}]

  - UnprovableResult [Line: 1038]: Unable to prove that a call to reach_error is unreachable
    Unable to prove that a call to reach_error is unreachable
 Reason: Not analyzed. 
  - UnprovableResult [Line: 1039]: Unable to prove that a call to reach_error is unreachable
    Unable to prove that a call to reach_error is unreachable
 Reason: Not analyzed. 
  - StatisticsResult: Ultimate Automizer benchmark data
    CFG has 1 procedures, 26 locations, 3 error locations. Started 1 CEGAR loops. OverallTime: 2.0s, OverallIterations: 6, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 139 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 139 mSDsluCounter, 242 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 145 mSDsCounter, 27 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 170 IncrementalHoareTripleChecker+Invalid, 197 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 27 mSolverCounterUnsat, 97 mSDtfsCounter, 170 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 50 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=27occurred in iteration=3, InterpolantAutomatonStates: 25, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 49 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.0s InterpolantComputationTime, 72 NumberOfCodeBlocks, 72 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 63 ConstructedInterpolants, 3 QuantifiedInterpolants, 548 SizeOfPredicates, 6 NumberOfNonLiveVariables, 160 ConjunctsInSsa, 32 ConjunctsInUnsatCore, 7 InterpolantComputations, 4 PerfectInterpolantSequences, 0/6 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 proved your program to be incorrect!
[2023-12-21 03:23:48,764 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0
Received shutdown request...