./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/array-multidimensional/copy-2-u.c --full-output --architecture 32bit


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


Checking for ERROR reachability
Using default analysis
Version 3061b6dc
Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/array-multidimensional/copy-2-u.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) )

 --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash d9e382438d8fbe8dfce0f613a239dc56836f436a035cb511dde070c4306eb1f9
--- Real Ultimate output ---
This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-3061b6d-m
[2024-11-18 09:14:27,497 INFO  L188        SettingsManager]: Resetting all preferences to default values...
[2024-11-18 09:14:27,553 INFO  L114        SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf
[2024-11-18 09:14:27,558 WARN  L101        SettingsManager]: Preference file contains the following unknown settings:
[2024-11-18 09:14:27,560 WARN  L103        SettingsManager]:   * de.uni_freiburg.informatik.ultimate.core.Log level for class
[2024-11-18 09:14:27,583 INFO  L130        SettingsManager]: Preferences different from defaults after loading the file:
[2024-11-18 09:14:27,584 INFO  L151        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2024-11-18 09:14:27,584 INFO  L153        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2024-11-18 09:14:27,585 INFO  L151        SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults:
[2024-11-18 09:14:27,586 INFO  L153        SettingsManager]:  * Use memory slicer=true
[2024-11-18 09:14:27,588 INFO  L151        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2024-11-18 09:14:27,588 INFO  L153        SettingsManager]:  * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2024-11-18 09:14:27,588 INFO  L151        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2024-11-18 09:14:27,589 INFO  L153        SettingsManager]:  * Create parallel compositions if possible=false
[2024-11-18 09:14:27,590 INFO  L153        SettingsManager]:  * Use SBE=true
[2024-11-18 09:14:27,590 INFO  L151        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2024-11-18 09:14:27,590 INFO  L153        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2024-11-18 09:14:27,591 INFO  L153        SettingsManager]:  * sizeof long=4
[2024-11-18 09:14:27,591 INFO  L153        SettingsManager]:  * Overapproximate operations on floating types=true
[2024-11-18 09:14:27,591 INFO  L153        SettingsManager]:  * sizeof POINTER=4
[2024-11-18 09:14:27,591 INFO  L153        SettingsManager]:  * Check division by zero=IGNORE
[2024-11-18 09:14:27,592 INFO  L153        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2024-11-18 09:14:27,592 INFO  L153        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2024-11-18 09:14:27,592 INFO  L153        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2024-11-18 09:14:27,593 INFO  L153        SettingsManager]:  * Allow undefined functions=false
[2024-11-18 09:14:27,594 INFO  L153        SettingsManager]:  * sizeof long double=12
[2024-11-18 09:14:27,594 INFO  L153        SettingsManager]:  * Check if freed pointer was valid=false
[2024-11-18 09:14:27,594 INFO  L153        SettingsManager]:  * Use constant arrays=true
[2024-11-18 09:14:27,594 INFO  L151        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2024-11-18 09:14:27,594 INFO  L153        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2024-11-18 09:14:27,595 INFO  L153        SettingsManager]:  * Only consider context switches at boundaries of atomic blocks=true
[2024-11-18 09:14:27,595 INFO  L153        SettingsManager]:  * SMT solver=External_DefaultMode
[2024-11-18 09:14:27,595 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2024-11-18 09:14:27,596 INFO  L151        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2024-11-18 09:14:27,596 INFO  L153        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2024-11-18 09:14:27,596 INFO  L153        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopHeads
[2024-11-18 09:14:27,596 INFO  L153        SettingsManager]:  * Trace refinement strategy=CAMEL
[2024-11-18 09:14:27,597 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2024-11-18 09:14:27,597 INFO  L153        SettingsManager]:  * Apply one-shot large block encoding in concurrent analysis=false
[2024-11-18 09:14:27,597 INFO  L153        SettingsManager]:  * Automaton type used in concurrency analysis=PETRI_NET
[2024-11-18 09:14:27,597 INFO  L153        SettingsManager]:  * Order on configurations for Petri net unfoldings=DBO
[2024-11-18 09:14:27,598 INFO  L153        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2024-11-18 09:14:27,598 INFO  L153        SettingsManager]:  * Looper check in Petri net analysis=SEMANTIC
WARNING: An illegal reflective access operation has occurred
WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int)
WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) )


Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d9e382438d8fbe8dfce0f613a239dc56836f436a035cb511dde070c4306eb1f9
[2024-11-18 09:14:27,843 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2024-11-18 09:14:27,865 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2024-11-18 09:14:27,868 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2024-11-18 09:14:27,869 INFO  L270        PluginConnector]: Initializing CDTParser...
[2024-11-18 09:14:27,869 INFO  L274        PluginConnector]: CDTParser initialized
[2024-11-18 09:14:27,870 INFO  L431   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-multidimensional/copy-2-u.c
[2024-11-18 09:14:29,218 INFO  L533              CDTParser]: Created temporary CDT project at NULL
[2024-11-18 09:14:29,383 INFO  L384              CDTParser]: Found 1 translation units.
[2024-11-18 09:14:29,383 INFO  L180              CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-multidimensional/copy-2-u.c
[2024-11-18 09:14:29,390 INFO  L427              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4f225c572/98105d996a7b4189a35b742a016e4f77/FLAG115a94f0d
[2024-11-18 09:14:29,402 INFO  L435              CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4f225c572/98105d996a7b4189a35b742a016e4f77
[2024-11-18 09:14:29,404 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2024-11-18 09:14:29,405 INFO  L133        ToolchainWalker]: Walking toolchain with 6 elements.
[2024-11-18 09:14:29,406 INFO  L112        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2024-11-18 09:14:29,406 INFO  L270        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2024-11-18 09:14:29,414 INFO  L274        PluginConnector]: CACSL2BoogieTranslator initialized
[2024-11-18 09:14:29,414 INFO  L184        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 09:14:29" (1/1) ...
[2024-11-18 09:14:29,415 INFO  L204        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@147ababa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:14:29, skipping insertion in model container
[2024-11-18 09:14:29,415 INFO  L184        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 09:14:29" (1/1) ...
[2024-11-18 09:14:29,430 INFO  L175         MainTranslator]: Built tables and reachable declarations
[2024-11-18 09:14:29,585 WARN  L250   ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-multidimensional/copy-2-u.c[320,333]
[2024-11-18 09:14:29,599 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2024-11-18 09:14:29,605 INFO  L200         MainTranslator]: Completed pre-run
[2024-11-18 09:14:29,613 WARN  L250   ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-multidimensional/copy-2-u.c[320,333]
[2024-11-18 09:14:29,619 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2024-11-18 09:14:29,631 INFO  L204         MainTranslator]: Completed translation
[2024-11-18 09:14:29,631 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:14:29 WrapperNode
[2024-11-18 09:14:29,631 INFO  L131        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2024-11-18 09:14:29,632 INFO  L112        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2024-11-18 09:14:29,632 INFO  L270        PluginConnector]: Initializing Boogie Procedure Inliner...
[2024-11-18 09:14:29,633 INFO  L274        PluginConnector]: Boogie Procedure Inliner initialized
[2024-11-18 09:14:29,638 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:14:29" (1/1) ...
[2024-11-18 09:14:29,650 INFO  L184        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:14:29" (1/1) ...
[2024-11-18 09:14:29,671 INFO  L138                Inliner]: procedures = 14, calls = 19, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 81
[2024-11-18 09:14:29,672 INFO  L131        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2024-11-18 09:14:29,673 INFO  L112        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2024-11-18 09:14:29,673 INFO  L270        PluginConnector]: Initializing Boogie Preprocessor...
[2024-11-18 09:14:29,674 INFO  L274        PluginConnector]: Boogie Preprocessor initialized
[2024-11-18 09:14:29,681 INFO  L184        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:14:29" (1/1) ...
[2024-11-18 09:14:29,682 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:14:29" (1/1) ...
[2024-11-18 09:14:29,683 INFO  L184        PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:14:29" (1/1) ...
[2024-11-18 09:14:29,700 INFO  L175           MemorySlicer]: Split 7 memory accesses to 3 slices as follows [2, 3, 2]. 43 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0]. The 2 writes are split as follows [0, 1, 1].
[2024-11-18 09:14:29,700 INFO  L184        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:14:29" (1/1) ...
[2024-11-18 09:14:29,700 INFO  L184        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:14:29" (1/1) ...
[2024-11-18 09:14:29,706 INFO  L184        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:14:29" (1/1) ...
[2024-11-18 09:14:29,713 INFO  L184        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:14:29" (1/1) ...
[2024-11-18 09:14:29,714 INFO  L184        PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:14:29" (1/1) ...
[2024-11-18 09:14:29,716 INFO  L184        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:14:29" (1/1) ...
[2024-11-18 09:14:29,717 INFO  L131        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2024-11-18 09:14:29,722 INFO  L112        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2024-11-18 09:14:29,722 INFO  L270        PluginConnector]: Initializing RCFGBuilder...
[2024-11-18 09:14:29,722 INFO  L274        PluginConnector]: RCFGBuilder initialized
[2024-11-18 09:14:29,723 INFO  L184        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:14:29" (1/1) ...
[2024-11-18 09:14:29,730 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2024-11-18 09:14:29,740 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2024-11-18 09:14:29,755 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)
[2024-11-18 09:14:29,758 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
[2024-11-18 09:14:29,799 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2024-11-18 09:14:29,799 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int#0
[2024-11-18 09:14:29,799 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int#1
[2024-11-18 09:14:29,800 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int#2
[2024-11-18 09:14:29,800 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack
[2024-11-18 09:14:29,800 INFO  L130     BoogieDeclarations]: Found specification of procedure write~int#0
[2024-11-18 09:14:29,800 INFO  L130     BoogieDeclarations]: Found specification of procedure write~int#1
[2024-11-18 09:14:29,801 INFO  L130     BoogieDeclarations]: Found specification of procedure write~int#2
[2024-11-18 09:14:29,801 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2024-11-18 09:14:29,801 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2024-11-18 09:14:29,801 INFO  L130     BoogieDeclarations]: Found specification of procedure read~int#0
[2024-11-18 09:14:29,802 INFO  L130     BoogieDeclarations]: Found specification of procedure read~int#1
[2024-11-18 09:14:29,802 INFO  L130     BoogieDeclarations]: Found specification of procedure read~int#2
[2024-11-18 09:14:29,802 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc
[2024-11-18 09:14:29,877 INFO  L238             CfgBuilder]: Building ICFG
[2024-11-18 09:14:29,880 INFO  L264             CfgBuilder]: Building CFG for each procedure with an implementation
[2024-11-18 09:14:30,021 INFO  L?                        ?]: Removed 17 outVars from TransFormulas that were not future-live.
[2024-11-18 09:14:30,021 INFO  L287             CfgBuilder]: Performing block encoding
[2024-11-18 09:14:30,036 INFO  L311             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2024-11-18 09:14:30,036 INFO  L316             CfgBuilder]: Removed 6 assume(true) statements.
[2024-11-18 09:14:30,037 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 09:14:30 BoogieIcfgContainer
[2024-11-18 09:14:30,037 INFO  L131        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2024-11-18 09:14:30,039 INFO  L112        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2024-11-18 09:14:30,039 INFO  L270        PluginConnector]: Initializing TraceAbstraction...
[2024-11-18 09:14:30,042 INFO  L274        PluginConnector]: TraceAbstraction initialized
[2024-11-18 09:14:30,042 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 09:14:29" (1/3) ...
[2024-11-18 09:14:30,042 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38e369ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 09:14:30, skipping insertion in model container
[2024-11-18 09:14:30,043 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:14:29" (2/3) ...
[2024-11-18 09:14:30,043 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38e369ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 09:14:30, skipping insertion in model container
[2024-11-18 09:14:30,043 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 09:14:30" (3/3) ...
[2024-11-18 09:14:30,044 INFO  L112   eAbstractionObserver]: Analyzing ICFG copy-2-u.c
[2024-11-18 09:14:30,057 INFO  L214   ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2024-11-18 09:14:30,058 INFO  L154   ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2024-11-18 09:14:30,101 INFO  L332      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2024-11-18 09:14:30,114 INFO  L333      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, 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;@1a012359, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2024-11-18 09:14:30,114 INFO  L334      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2024-11-18 09:14:30,118 INFO  L276                IsEmpty]: Start isEmpty. Operand  has 21 states, 19 states have (on average 1.736842105263158) internal successors, (33), 20 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-18 09:14:30,129 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 11
[2024-11-18 09:14:30,129 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-18 09:14:30,130 INFO  L215           NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-18 09:14:30,130 INFO  L396      AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-18 09:14:30,134 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-18 09:14:30,135 INFO  L85        PathProgramCache]: Analyzing trace with hash 1817636276, now seen corresponding path program 1 times
[2024-11-18 09:14:30,141 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-18 09:14:30,142 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [871472905]
[2024-11-18 09:14:30,142 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-18 09:14:30,142 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-18 09:14:30,220 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-18 09:14:30,322 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-18 09:14:30,323 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-18 09:14:30,323 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [871472905]
[2024-11-18 09:14:30,325 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [871472905] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-18 09:14:30,325 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-18 09:14:30,326 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2024-11-18 09:14:30,327 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1967291315]
[2024-11-18 09:14:30,327 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-18 09:14:30,330 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2024-11-18 09:14:30,331 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-18 09:14:30,349 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2024-11-18 09:14:30,350 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2024-11-18 09:14:30,355 INFO  L87              Difference]: Start difference. First operand  has 21 states, 19 states have (on average 1.736842105263158) internal successors, (33), 20 states have internal predecessors, (33), 0 states have call successors, (0), 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 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-18 09:14:30,416 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-18 09:14:30,417 INFO  L93              Difference]: Finished difference Result 43 states and 71 transitions.
[2024-11-18 09:14:30,420 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2024-11-18 09:14:30,421 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 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 10
[2024-11-18 09:14:30,422 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-18 09:14:30,427 INFO  L225             Difference]: With dead ends: 43
[2024-11-18 09:14:30,427 INFO  L226             Difference]: Without dead ends: 20
[2024-11-18 09:14:30,429 INFO  L431           NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2024-11-18 09:14:30,431 INFO  L432           NwaCegarLoop]: 22 mSDtfsCounter, 3 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2024-11-18 09:14:30,432 INFO  L433           NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 29 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2024-11-18 09:14:30,445 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 20 states.
[2024-11-18 09:14:30,453 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 18.
[2024-11-18 09:14:30,454 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 18 states, 17 states have (on average 1.3529411764705883) internal successors, (23), 17 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)
[2024-11-18 09:14:30,454 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 23 transitions.
[2024-11-18 09:14:30,455 INFO  L78                 Accepts]: Start accepts. Automaton has 18 states and 23 transitions. Word has length 10
[2024-11-18 09:14:30,456 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-18 09:14:30,456 INFO  L471      AbstractCegarLoop]: Abstraction has 18 states and 23 transitions.
[2024-11-18 09:14:30,456 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-18 09:14:30,456 INFO  L276                IsEmpty]: Start isEmpty. Operand 18 states and 23 transitions.
[2024-11-18 09:14:30,457 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 14
[2024-11-18 09:14:30,457 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-18 09:14:30,457 INFO  L215           NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-18 09:14:30,457 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2024-11-18 09:14:30,457 INFO  L396      AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-18 09:14:30,458 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-18 09:14:30,458 INFO  L85        PathProgramCache]: Analyzing trace with hash 429030367, now seen corresponding path program 1 times
[2024-11-18 09:14:30,458 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-18 09:14:30,458 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [709687348]
[2024-11-18 09:14:30,459 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-18 09:14:30,459 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-18 09:14:30,473 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-18 09:14:30,545 INFO  L134       CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-18 09:14:30,545 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-18 09:14:30,546 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [709687348]
[2024-11-18 09:14:30,546 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [709687348] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-18 09:14:30,546 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-18 09:14:30,546 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2024-11-18 09:14:30,546 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [222029116]
[2024-11-18 09:14:30,546 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-18 09:14:30,547 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2024-11-18 09:14:30,547 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-18 09:14:30,547 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2024-11-18 09:14:30,547 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2024-11-18 09:14:30,548 INFO  L87              Difference]: Start difference. First operand 18 states and 23 transitions. Second operand  has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-18 09:14:30,586 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-18 09:14:30,587 INFO  L93              Difference]: Finished difference Result 40 states and 53 transitions.
[2024-11-18 09:14:30,587 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2024-11-18 09:14:30,587 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 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 13
[2024-11-18 09:14:30,587 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-18 09:14:30,588 INFO  L225             Difference]: With dead ends: 40
[2024-11-18 09:14:30,588 INFO  L226             Difference]: Without dead ends: 25
[2024-11-18 09:14:30,590 INFO  L431           NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2024-11-18 09:14:30,591 INFO  L432           NwaCegarLoop]: 10 mSDtfsCounter, 30 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2024-11-18 09:14:30,591 INFO  L433           NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 19 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2024-11-18 09:14:30,592 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 25 states.
[2024-11-18 09:14:30,595 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 21.
[2024-11-18 09:14:30,595 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 21 states, 20 states have (on average 1.3) internal successors, (26), 20 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-18 09:14:30,595 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 26 transitions.
[2024-11-18 09:14:30,595 INFO  L78                 Accepts]: Start accepts. Automaton has 21 states and 26 transitions. Word has length 13
[2024-11-18 09:14:30,596 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-18 09:14:30,596 INFO  L471      AbstractCegarLoop]: Abstraction has 21 states and 26 transitions.
[2024-11-18 09:14:30,596 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-18 09:14:30,596 INFO  L276                IsEmpty]: Start isEmpty. Operand 21 states and 26 transitions.
[2024-11-18 09:14:30,596 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 15
[2024-11-18 09:14:30,596 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-18 09:14:30,596 INFO  L215           NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-18 09:14:30,597 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2024-11-18 09:14:30,597 INFO  L396      AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-18 09:14:30,597 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-18 09:14:30,597 INFO  L85        PathProgramCache]: Analyzing trace with hash -270581085, now seen corresponding path program 1 times
[2024-11-18 09:14:30,598 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-18 09:14:30,598 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1701497904]
[2024-11-18 09:14:30,598 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-18 09:14:30,598 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-18 09:14:30,612 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-18 09:14:30,665 INFO  L134       CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked.
[2024-11-18 09:14:30,665 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-18 09:14:30,665 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1701497904]
[2024-11-18 09:14:30,665 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1701497904] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-18 09:14:30,666 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-18 09:14:30,666 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2024-11-18 09:14:30,666 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1869897357]
[2024-11-18 09:14:30,666 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-18 09:14:30,666 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2024-11-18 09:14:30,666 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-18 09:14:30,667 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2024-11-18 09:14:30,667 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2024-11-18 09:14:30,667 INFO  L87              Difference]: Start difference. First operand 21 states and 26 transitions. Second operand  has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 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)
[2024-11-18 09:14:30,704 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-18 09:14:30,704 INFO  L93              Difference]: Finished difference Result 45 states and 55 transitions.
[2024-11-18 09:14:30,705 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2024-11-18 09:14:30,705 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 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
[2024-11-18 09:14:30,705 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-18 09:14:30,706 INFO  L225             Difference]: With dead ends: 45
[2024-11-18 09:14:30,706 INFO  L226             Difference]: Without dead ends: 36
[2024-11-18 09:14:30,706 INFO  L431           NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2024-11-18 09:14:30,707 INFO  L432           NwaCegarLoop]: 8 mSDtfsCounter, 28 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2024-11-18 09:14:30,707 INFO  L433           NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 14 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2024-11-18 09:14:30,708 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 36 states.
[2024-11-18 09:14:30,714 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 22.
[2024-11-18 09:14:30,714 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 22 states, 21 states have (on average 1.2857142857142858) internal successors, (27), 21 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)
[2024-11-18 09:14:30,714 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 27 transitions.
[2024-11-18 09:14:30,714 INFO  L78                 Accepts]: Start accepts. Automaton has 22 states and 27 transitions. Word has length 14
[2024-11-18 09:14:30,714 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-18 09:14:30,715 INFO  L471      AbstractCegarLoop]: Abstraction has 22 states and 27 transitions.
[2024-11-18 09:14:30,715 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 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)
[2024-11-18 09:14:30,715 INFO  L276                IsEmpty]: Start isEmpty. Operand 22 states and 27 transitions.
[2024-11-18 09:14:30,715 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 19
[2024-11-18 09:14:30,715 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-18 09:14:30,715 INFO  L215           NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-18 09:14:30,715 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2024-11-18 09:14:30,715 INFO  L396      AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-18 09:14:30,716 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-18 09:14:30,716 INFO  L85        PathProgramCache]: Analyzing trace with hash 1391394002, now seen corresponding path program 1 times
[2024-11-18 09:14:30,716 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-18 09:14:30,716 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1405864955]
[2024-11-18 09:14:30,716 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-18 09:14:30,716 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-18 09:14:30,742 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-18 09:14:30,886 INFO  L134       CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked.
[2024-11-18 09:14:30,888 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-18 09:14:30,888 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1405864955]
[2024-11-18 09:14:30,888 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1405864955] provided 0 perfect and 1 imperfect interpolant sequences
[2024-11-18 09:14:30,888 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2000553351]
[2024-11-18 09:14:30,888 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-18 09:14:30,889 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-18 09:14:30,889 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2024-11-18 09:14:30,892 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)
[2024-11-18 09:14:30,897 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process
[2024-11-18 09:14:30,970 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-18 09:14:30,972 INFO  L255         TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 4 conjuncts are in the unsatisfiable core
[2024-11-18 09:14:30,976 INFO  L278         TraceCheckSpWp]: Computing forward predicates...
[2024-11-18 09:14:31,038 INFO  L134       CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked.
[2024-11-18 09:14:31,038 INFO  L311         TraceCheckSpWp]: Computing backward predicates...
[2024-11-18 09:14:31,074 INFO  L134       CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked.
[2024-11-18 09:14:31,075 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [2000553351] provided 0 perfect and 2 imperfect interpolant sequences
[2024-11-18 09:14:31,075 INFO  L185   FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2024-11-18 09:14:31,075 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10
[2024-11-18 09:14:31,075 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2008020316]
[2024-11-18 09:14:31,075 INFO  L85    oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2024-11-18 09:14:31,076 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 10 states
[2024-11-18 09:14:31,076 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-18 09:14:31,076 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants.
[2024-11-18 09:14:31,079 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90
[2024-11-18 09:14:31,079 INFO  L87              Difference]: Start difference. First operand 22 states and 27 transitions. Second operand  has 10 states, 10 states have (on average 2.5) internal successors, (25), 10 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)
[2024-11-18 09:14:31,169 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-18 09:14:31,169 INFO  L93              Difference]: Finished difference Result 62 states and 81 transitions.
[2024-11-18 09:14:31,169 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. 
[2024-11-18 09:14:31,169 INFO  L78                 Accepts]: Start accepts. Automaton has  has 10 states, 10 states have (on average 2.5) internal successors, (25), 10 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) Word has length 18
[2024-11-18 09:14:31,170 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-18 09:14:31,170 INFO  L225             Difference]: With dead ends: 62
[2024-11-18 09:14:31,170 INFO  L226             Difference]: Without dead ends: 43
[2024-11-18 09:14:31,171 INFO  L431           NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132
[2024-11-18 09:14:31,171 INFO  L432           NwaCegarLoop]: 10 mSDtfsCounter, 80 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2024-11-18 09:14:31,172 INFO  L433           NwaCegarLoop]: SdHoareTripleChecker [80 Valid, 50 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2024-11-18 09:14:31,172 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 43 states.
[2024-11-18 09:14:31,176 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 37.
[2024-11-18 09:14:31,177 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 37 states, 36 states have (on average 1.25) internal successors, (45), 36 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-18 09:14:31,177 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 45 transitions.
[2024-11-18 09:14:31,177 INFO  L78                 Accepts]: Start accepts. Automaton has 37 states and 45 transitions. Word has length 18
[2024-11-18 09:14:31,177 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-18 09:14:31,178 INFO  L471      AbstractCegarLoop]: Abstraction has 37 states and 45 transitions.
[2024-11-18 09:14:31,178 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 10 states, 10 states have (on average 2.5) internal successors, (25), 10 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)
[2024-11-18 09:14:31,178 INFO  L276                IsEmpty]: Start isEmpty. Operand 37 states and 45 transitions.
[2024-11-18 09:14:31,178 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 25
[2024-11-18 09:14:31,178 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-18 09:14:31,179 INFO  L215           NwaCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-18 09:14:31,192 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0
[2024-11-18 09:14:31,382 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-18 09:14:31,383 INFO  L396      AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-18 09:14:31,384 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-18 09:14:31,384 INFO  L85        PathProgramCache]: Analyzing trace with hash -1541106392, now seen corresponding path program 2 times
[2024-11-18 09:14:31,384 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-18 09:14:31,384 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1226928705]
[2024-11-18 09:14:31,384 INFO  L93    rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
[2024-11-18 09:14:31,385 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-18 09:14:31,422 INFO  L227   tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2024-11-18 09:14:31,422 INFO  L228   tOrderPrioritization]: Conjunction of SSA is unsat
[2024-11-18 09:14:31,505 INFO  L134       CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked.
[2024-11-18 09:14:31,506 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-18 09:14:31,506 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1226928705]
[2024-11-18 09:14:31,506 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1226928705] provided 0 perfect and 1 imperfect interpolant sequences
[2024-11-18 09:14:31,506 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1960568846]
[2024-11-18 09:14:31,506 INFO  L93    rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
[2024-11-18 09:14:31,507 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-18 09:14:31,507 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2024-11-18 09:14:31,510 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)
[2024-11-18 09:14:31,514 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process
[2024-11-18 09:14:31,589 INFO  L227   tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2024-11-18 09:14:31,589 INFO  L228   tOrderPrioritization]: Conjunction of SSA is unsat
[2024-11-18 09:14:31,590 INFO  L255         TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 7 conjuncts are in the unsatisfiable core
[2024-11-18 09:14:31,591 INFO  L278         TraceCheckSpWp]: Computing forward predicates...
[2024-11-18 09:14:31,676 INFO  L134       CoverageAnalysis]: Checked inductivity of 22 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked.
[2024-11-18 09:14:31,680 INFO  L311         TraceCheckSpWp]: Computing backward predicates...
[2024-11-18 09:14:31,746 INFO  L134       CoverageAnalysis]: Checked inductivity of 22 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked.
[2024-11-18 09:14:31,746 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1960568846] provided 0 perfect and 2 imperfect interpolant sequences
[2024-11-18 09:14:31,746 INFO  L185   FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2024-11-18 09:14:31,746 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 8, 8] total 16
[2024-11-18 09:14:31,746 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1095781061]
[2024-11-18 09:14:31,747 INFO  L85    oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2024-11-18 09:14:31,748 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 16 states
[2024-11-18 09:14:31,749 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-18 09:14:31,750 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants.
[2024-11-18 09:14:31,750 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=152, Unknown=0, NotChecked=0, Total=240
[2024-11-18 09:14:31,751 INFO  L87              Difference]: Start difference. First operand 37 states and 45 transitions. Second operand  has 16 states, 16 states have (on average 2.125) internal successors, (34), 16 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-18 09:14:32,315 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-18 09:14:32,315 INFO  L93              Difference]: Finished difference Result 275 states and 350 transitions.
[2024-11-18 09:14:32,315 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. 
[2024-11-18 09:14:32,315 INFO  L78                 Accepts]: Start accepts. Automaton has  has 16 states, 16 states have (on average 2.125) internal successors, (34), 16 states have internal predecessors, (34), 0 states have call successors, (0), 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 24
[2024-11-18 09:14:32,316 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-18 09:14:32,317 INFO  L225             Difference]: With dead ends: 275
[2024-11-18 09:14:32,317 INFO  L226             Difference]: Without dead ends: 241
[2024-11-18 09:14:32,318 INFO  L431           NwaCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 456 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=629, Invalid=1093, Unknown=0, NotChecked=0, Total=1722
[2024-11-18 09:14:32,321 INFO  L432           NwaCegarLoop]: 7 mSDtfsCounter, 631 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 102 mSolverCounterSat, 191 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 631 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 293 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 191 IncrementalHoareTripleChecker+Valid, 102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2024-11-18 09:14:32,321 INFO  L433           NwaCegarLoop]: SdHoareTripleChecker [631 Valid, 49 Invalid, 293 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [191 Valid, 102 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2024-11-18 09:14:32,322 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 241 states.
[2024-11-18 09:14:32,339 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 241 to 93.
[2024-11-18 09:14:32,339 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 93 states, 92 states have (on average 1.184782608695652) internal successors, (109), 92 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-18 09:14:32,340 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 109 transitions.
[2024-11-18 09:14:32,340 INFO  L78                 Accepts]: Start accepts. Automaton has 93 states and 109 transitions. Word has length 24
[2024-11-18 09:14:32,341 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-18 09:14:32,341 INFO  L471      AbstractCegarLoop]: Abstraction has 93 states and 109 transitions.
[2024-11-18 09:14:32,341 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 16 states, 16 states have (on average 2.125) internal successors, (34), 16 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-18 09:14:32,341 INFO  L276                IsEmpty]: Start isEmpty. Operand 93 states and 109 transitions.
[2024-11-18 09:14:32,342 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 63
[2024-11-18 09:14:32,342 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-18 09:14:32,342 INFO  L215           NwaCegarLoop]: trace histogram [20, 20, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-18 09:14:32,358 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0
[2024-11-18 09:14:32,546 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-18 09:14:32,547 INFO  L396      AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-18 09:14:32,547 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-18 09:14:32,548 INFO  L85        PathProgramCache]: Analyzing trace with hash -1134650892, now seen corresponding path program 3 times
[2024-11-18 09:14:32,548 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-18 09:14:32,548 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2053873224]
[2024-11-18 09:14:32,548 INFO  L93    rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2
[2024-11-18 09:14:32,548 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-18 09:14:32,720 INFO  L227   tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 13 check-sat command(s)
[2024-11-18 09:14:32,720 INFO  L228   tOrderPrioritization]: Conjunction of SSA is unsat
[2024-11-18 09:14:33,093 INFO  L134       CoverageAnalysis]: Checked inductivity of 470 backedges. 123 proven. 55 refuted. 0 times theorem prover too weak. 292 trivial. 0 not checked.
[2024-11-18 09:14:33,094 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-18 09:14:33,094 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2053873224]
[2024-11-18 09:14:33,094 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2053873224] provided 0 perfect and 1 imperfect interpolant sequences
[2024-11-18 09:14:33,094 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1670127324]
[2024-11-18 09:14:33,095 INFO  L93    rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2
[2024-11-18 09:14:33,095 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-18 09:14:33,095 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2024-11-18 09:14:33,096 INFO  L229       MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-18 09:14:33,102 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process
[2024-11-18 09:14:36,632 INFO  L227   tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 12 check-sat command(s)
[2024-11-18 09:14:36,632 INFO  L228   tOrderPrioritization]: Conjunction of SSA is unsat
[2024-11-18 09:14:36,645 INFO  L255         TraceCheckSpWp]: Trace formula consists of 406 conjuncts, 90 conjuncts are in the unsatisfiable core
[2024-11-18 09:14:36,655 INFO  L278         TraceCheckSpWp]: Computing forward predicates...
[2024-11-18 09:14:36,790 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 27 treesize of output 1
[2024-11-18 09:14:36,856 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 15 treesize of output 11
[2024-11-18 09:14:36,901 INFO  L190   IndexEqualityManager]: detected not equals via solver
[2024-11-18 09:14:36,902 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 31 treesize of output 15
[2024-11-18 09:14:36,943 INFO  L190   IndexEqualityManager]: detected not equals via solver
[2024-11-18 09:14:36,944 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 31 treesize of output 15
[2024-11-18 09:14:36,985 INFO  L190   IndexEqualityManager]: detected not equals via solver
[2024-11-18 09:14:36,985 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 31 treesize of output 15
[2024-11-18 09:14:37,031 INFO  L190   IndexEqualityManager]: detected not equals via solver
[2024-11-18 09:14:37,032 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 31 treesize of output 15
[2024-11-18 09:14:37,083 INFO  L190   IndexEqualityManager]: detected not equals via solver
[2024-11-18 09:14:37,083 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 31 treesize of output 15
[2024-11-18 09:14:37,153 INFO  L190   IndexEqualityManager]: detected not equals via solver
[2024-11-18 09:14:37,154 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 31 treesize of output 15
[2024-11-18 09:14:37,210 INFO  L190   IndexEqualityManager]: detected not equals via solver
[2024-11-18 09:14:37,211 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 31 treesize of output 15
[2024-11-18 09:14:37,278 INFO  L190   IndexEqualityManager]: detected not equals via solver
[2024-11-18 09:14:37,279 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 31 treesize of output 15
[2024-11-18 09:14:37,340 INFO  L190   IndexEqualityManager]: detected not equals via solver
[2024-11-18 09:14:37,341 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 31 treesize of output 15
[2024-11-18 09:14:37,423 INFO  L349             Elim1Store]: treesize reduction 27, result has 35.7 percent of original size
[2024-11-18 09:14:37,423 INFO  L378             Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 23
[2024-11-18 09:14:37,499 INFO  L349             Elim1Store]: treesize reduction 27, result has 35.7 percent of original size
[2024-11-18 09:14:37,500 INFO  L378             Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 47 treesize of output 31
[2024-11-18 09:14:37,576 INFO  L349             Elim1Store]: treesize reduction 27, result has 35.7 percent of original size
[2024-11-18 09:14:37,577 INFO  L378             Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 47 treesize of output 31
[2024-11-18 09:14:37,644 INFO  L349             Elim1Store]: treesize reduction 27, result has 35.7 percent of original size
[2024-11-18 09:14:37,644 INFO  L378             Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 47 treesize of output 31
[2024-11-18 09:14:37,715 INFO  L349             Elim1Store]: treesize reduction 27, result has 35.7 percent of original size
[2024-11-18 09:14:37,715 INFO  L378             Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 47 treesize of output 31
[2024-11-18 09:14:37,785 INFO  L349             Elim1Store]: treesize reduction 27, result has 35.7 percent of original size
[2024-11-18 09:14:37,786 INFO  L378             Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 47 treesize of output 31
[2024-11-18 09:14:37,849 INFO  L349             Elim1Store]: treesize reduction 27, result has 35.7 percent of original size
[2024-11-18 09:14:37,849 INFO  L378             Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 47 treesize of output 31
[2024-11-18 09:14:37,921 INFO  L349             Elim1Store]: treesize reduction 27, result has 35.7 percent of original size
[2024-11-18 09:14:37,922 INFO  L378             Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 47 treesize of output 31
[2024-11-18 09:14:38,006 INFO  L349             Elim1Store]: treesize reduction 27, result has 35.7 percent of original size
[2024-11-18 09:14:38,007 INFO  L378             Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 47 treesize of output 31
[2024-11-18 09:14:38,073 INFO  L349             Elim1Store]: treesize reduction 27, result has 35.7 percent of original size
[2024-11-18 09:14:38,073 INFO  L378             Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 47 treesize of output 31
[2024-11-18 09:14:38,275 INFO  L134       CoverageAnalysis]: Checked inductivity of 470 backedges. 36 proven. 198 refuted. 0 times theorem prover too weak. 236 trivial. 0 not checked.
[2024-11-18 09:14:38,275 INFO  L311         TraceCheckSpWp]: Computing backward predicates...