./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/loop-lit/bh2017-ex1-poly.i --full-output --architecture 32bit


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


Checking for ERROR reachability
Using default analysis
Version 803cd42f
Calling Ultimate with: /root/.sdkman/candidates/java/current/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/loop-lit/bh2017-ex1-poly.i -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 d6dbcbf51695ea037a123bcc006ce5f6db095b874a22b169ec869d834ce41de6
--- Real Ultimate output ---
This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-803cd42-m
[2024-11-22 01:02:53,476 INFO  L188        SettingsManager]: Resetting all preferences to default values...
[2024-11-22 01:02:53,559 INFO  L114        SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf
[2024-11-22 01:02:53,566 WARN  L101        SettingsManager]: Preference file contains the following unknown settings:
[2024-11-22 01:02:53,567 WARN  L103        SettingsManager]:   * de.uni_freiburg.informatik.ultimate.core.Log level for class
[2024-11-22 01:02:53,590 INFO  L130        SettingsManager]: Preferences different from defaults after loading the file:
[2024-11-22 01:02:53,591 INFO  L151        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2024-11-22 01:02:53,591 INFO  L153        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2024-11-22 01:02:53,591 INFO  L151        SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults:
[2024-11-22 01:02:53,591 INFO  L153        SettingsManager]:  * Use memory slicer=true
[2024-11-22 01:02:53,592 INFO  L151        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2024-11-22 01:02:53,592 INFO  L153        SettingsManager]:  * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2024-11-22 01:02:53,597 INFO  L151        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2024-11-22 01:02:53,598 INFO  L153        SettingsManager]:  * Create parallel compositions if possible=false
[2024-11-22 01:02:53,598 INFO  L153        SettingsManager]:  * Use SBE=true
[2024-11-22 01:02:53,598 INFO  L151        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2024-11-22 01:02:53,598 INFO  L153        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2024-11-22 01:02:53,598 INFO  L153        SettingsManager]:  * sizeof long=4
[2024-11-22 01:02:53,599 INFO  L153        SettingsManager]:  * Overapproximate operations on floating types=true
[2024-11-22 01:02:53,599 INFO  L153        SettingsManager]:  * sizeof POINTER=4
[2024-11-22 01:02:53,599 INFO  L153        SettingsManager]:  * Check division by zero=IGNORE
[2024-11-22 01:02:53,606 INFO  L153        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2024-11-22 01:02:53,606 INFO  L153        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2024-11-22 01:02:53,606 INFO  L153        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2024-11-22 01:02:53,607 INFO  L153        SettingsManager]:  * Allow undefined functions=false
[2024-11-22 01:02:53,607 INFO  L153        SettingsManager]:  * sizeof long double=12
[2024-11-22 01:02:53,607 INFO  L153        SettingsManager]:  * Check if freed pointer was valid=false
[2024-11-22 01:02:53,607 INFO  L153        SettingsManager]:  * Use constant arrays=true
[2024-11-22 01:02:53,607 INFO  L151        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2024-11-22 01:02:53,607 INFO  L153        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2024-11-22 01:02:53,608 INFO  L153        SettingsManager]:  * Only consider context switches at boundaries of atomic blocks=true
[2024-11-22 01:02:53,608 INFO  L153        SettingsManager]:  * SMT solver=External_DefaultMode
[2024-11-22 01:02:53,608 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2024-11-22 01:02:53,608 INFO  L151        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2024-11-22 01:02:53,608 INFO  L153        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2024-11-22 01:02:53,608 INFO  L153        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopHeads
[2024-11-22 01:02:53,609 INFO  L153        SettingsManager]:  * Trace refinement strategy=CAMEL
[2024-11-22 01:02:53,609 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2024-11-22 01:02:53,609 INFO  L153        SettingsManager]:  * Apply one-shot large block encoding in concurrent analysis=false
[2024-11-22 01:02:53,611 INFO  L153        SettingsManager]:  * Automaton type used in concurrency analysis=PETRI_NET
[2024-11-22 01:02:53,611 INFO  L153        SettingsManager]:  * Order on configurations for Petri net unfoldings=DBO
[2024-11-22 01:02:53,612 INFO  L153        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2024-11-22 01:02:53,612 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 -> d6dbcbf51695ea037a123bcc006ce5f6db095b874a22b169ec869d834ce41de6
[2024-11-22 01:02:53,956 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2024-11-22 01:02:53,991 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2024-11-22 01:02:53,998 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2024-11-22 01:02:53,999 INFO  L270        PluginConnector]: Initializing CDTParser...
[2024-11-22 01:02:54,003 INFO  L274        PluginConnector]: CDTParser initialized
[2024-11-22 01:02:54,004 INFO  L431   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loop-lit/bh2017-ex1-poly.i
[2024-11-22 01:02:55,683 INFO  L533              CDTParser]: Created temporary CDT project at NULL
[2024-11-22 01:02:55,857 INFO  L384              CDTParser]: Found 1 translation units.
[2024-11-22 01:02:55,859 INFO  L180              CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-lit/bh2017-ex1-poly.i
[2024-11-22 01:02:55,868 INFO  L427              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a0aeb6112/2927827b6bd544be852ff16116111eec/FLAG3891658c5
[2024-11-22 01:02:55,899 INFO  L435              CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a0aeb6112/2927827b6bd544be852ff16116111eec
[2024-11-22 01:02:55,902 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2024-11-22 01:02:55,903 INFO  L133        ToolchainWalker]: Walking toolchain with 6 elements.
[2024-11-22 01:02:55,905 INFO  L112        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2024-11-22 01:02:55,906 INFO  L270        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2024-11-22 01:02:55,910 INFO  L274        PluginConnector]: CACSL2BoogieTranslator initialized
[2024-11-22 01:02:55,910 INFO  L184        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:02:55" (1/1) ...
[2024-11-22 01:02:55,911 INFO  L204        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4c6e28d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:02:55, skipping insertion in model container
[2024-11-22 01:02:55,911 INFO  L184        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:02:55" (1/1) ...
[2024-11-22 01:02:55,927 INFO  L175         MainTranslator]: Built tables and reachable declarations
[2024-11-22 01:02:56,078 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/loop-lit/bh2017-ex1-poly.i[804,817]
[2024-11-22 01:02:56,090 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2024-11-22 01:02:56,099 INFO  L200         MainTranslator]: Completed pre-run
[2024-11-22 01:02:56,109 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/loop-lit/bh2017-ex1-poly.i[804,817]
[2024-11-22 01:02:56,112 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2024-11-22 01:02:56,128 INFO  L204         MainTranslator]: Completed translation
[2024-11-22 01:02:56,128 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:02:56 WrapperNode
[2024-11-22 01:02:56,128 INFO  L131        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2024-11-22 01:02:56,129 INFO  L112        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2024-11-22 01:02:56,130 INFO  L270        PluginConnector]: Initializing Boogie Procedure Inliner...
[2024-11-22 01:02:56,130 INFO  L274        PluginConnector]: Boogie Procedure Inliner initialized
[2024-11-22 01:02:56,135 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:02:56" (1/1) ...
[2024-11-22 01:02:56,141 INFO  L184        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:02:56" (1/1) ...
[2024-11-22 01:02:56,152 INFO  L138                Inliner]: procedures = 14, calls = 14, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 34
[2024-11-22 01:02:56,153 INFO  L131        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2024-11-22 01:02:56,154 INFO  L112        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2024-11-22 01:02:56,154 INFO  L270        PluginConnector]: Initializing Boogie Preprocessor...
[2024-11-22 01:02:56,154 INFO  L274        PluginConnector]: Boogie Preprocessor initialized
[2024-11-22 01:02:56,161 INFO  L184        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:02:56" (1/1) ...
[2024-11-22 01:02:56,162 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:02:56" (1/1) ...
[2024-11-22 01:02:56,163 INFO  L184        PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:02:56" (1/1) ...
[2024-11-22 01:02:56,171 INFO  L175           MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0].
[2024-11-22 01:02:56,171 INFO  L184        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:02:56" (1/1) ...
[2024-11-22 01:02:56,172 INFO  L184        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:02:56" (1/1) ...
[2024-11-22 01:02:56,176 INFO  L184        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:02:56" (1/1) ...
[2024-11-22 01:02:56,178 INFO  L184        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:02:56" (1/1) ...
[2024-11-22 01:02:56,182 INFO  L184        PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:02:56" (1/1) ...
[2024-11-22 01:02:56,182 INFO  L184        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:02:56" (1/1) ...
[2024-11-22 01:02:56,183 INFO  L131        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2024-11-22 01:02:56,184 INFO  L112        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2024-11-22 01:02:56,184 INFO  L270        PluginConnector]: Initializing RCFGBuilder...
[2024-11-22 01:02:56,184 INFO  L274        PluginConnector]: RCFGBuilder initialized
[2024-11-22 01:02:56,184 INFO  L184        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:02:56" (1/1) ...
[2024-11-22 01:02:56,189 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2024-11-22 01:02:56,197 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2024-11-22 01:02:56,210 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)
[2024-11-22 01:02:56,212 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
[2024-11-22 01:02:56,246 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2024-11-22 01:02:56,247 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int#0
[2024-11-22 01:02:56,247 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2024-11-22 01:02:56,247 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2024-11-22 01:02:56,247 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_assert
[2024-11-22 01:02:56,247 INFO  L138     BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert
[2024-11-22 01:02:56,292 INFO  L238             CfgBuilder]: Building ICFG
[2024-11-22 01:02:56,295 INFO  L264             CfgBuilder]: Building CFG for each procedure with an implementation
[2024-11-22 01:02:56,415 INFO  L?                        ?]: Removed 5 outVars from TransFormulas that were not future-live.
[2024-11-22 01:02:56,419 INFO  L287             CfgBuilder]: Performing block encoding
[2024-11-22 01:02:56,437 INFO  L311             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2024-11-22 01:02:56,438 INFO  L316             CfgBuilder]: Removed 2 assume(true) statements.
[2024-11-22 01:02:56,439 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:02:56 BoogieIcfgContainer
[2024-11-22 01:02:56,439 INFO  L131        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2024-11-22 01:02:56,441 INFO  L112        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2024-11-22 01:02:56,441 INFO  L270        PluginConnector]: Initializing TraceAbstraction...
[2024-11-22 01:02:56,444 INFO  L274        PluginConnector]: TraceAbstraction initialized
[2024-11-22 01:02:56,444 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 01:02:55" (1/3) ...
[2024-11-22 01:02:56,445 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23d9fa53 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 01:02:56, skipping insertion in model container
[2024-11-22 01:02:56,445 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:02:56" (2/3) ...
[2024-11-22 01:02:56,446 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23d9fa53 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 01:02:56, skipping insertion in model container
[2024-11-22 01:02:56,446 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:02:56" (3/3) ...
[2024-11-22 01:02:56,447 INFO  L112   eAbstractionObserver]: Analyzing ICFG bh2017-ex1-poly.i
[2024-11-22 01:02:56,460 INFO  L214   ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2024-11-22 01:02:56,460 INFO  L154   ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2024-11-22 01:02:56,513 INFO  L332      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2024-11-22 01:02:56,521 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;@27295973, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2024-11-22 01:02:56,521 INFO  L334      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2024-11-22 01:02:56,525 INFO  L276                IsEmpty]: Start isEmpty. Operand  has 23 states, 12 states have (on average 1.5) internal successors, (18), 14 states have internal predecessors, (18), 8 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8)
[2024-11-22 01:02:56,531 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 9
[2024-11-22 01:02:56,532 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-22 01:02:56,532 INFO  L215           NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-22 01:02:56,532 INFO  L396      AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-22 01:02:56,538 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-22 01:02:56,539 INFO  L85        PathProgramCache]: Analyzing trace with hash 300894425, now seen corresponding path program 1 times
[2024-11-22 01:02:56,546 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-22 01:02:56,551 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1622631111]
[2024-11-22 01:02:56,551 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-22 01:02:56,551 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-22 01:02:56,695 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-22 01:02:56,854 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-22 01:02:56,855 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-22 01:02:56,855 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1622631111]
[2024-11-22 01:02:56,856 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1622631111] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-22 01:02:56,856 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-22 01:02:56,856 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2024-11-22 01:02:56,857 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1623353603]
[2024-11-22 01:02:56,861 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-22 01:02:56,865 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2024-11-22 01:02:56,868 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-22 01:02:56,903 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2024-11-22 01:02:56,907 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2024-11-22 01:02:56,909 INFO  L87              Difference]: Start difference. First operand  has 23 states, 12 states have (on average 1.5) internal successors, (18), 14 states have internal predecessors, (18), 8 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) Second operand  has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-22 01:02:56,970 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-22 01:02:56,970 INFO  L93              Difference]: Finished difference Result 45 states and 77 transitions.
[2024-11-22 01:02:56,976 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2024-11-22 01:02:56,977 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8
[2024-11-22 01:02:56,978 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-22 01:02:56,987 INFO  L225             Difference]: With dead ends: 45
[2024-11-22 01:02:56,990 INFO  L226             Difference]: Without dead ends: 20
[2024-11-22 01:02:57,008 INFO  L431           NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2024-11-22 01:02:57,019 INFO  L432           NwaCegarLoop]: 30 mSDtfsCounter, 0 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2024-11-22 01:02:57,022 INFO  L433           NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 55 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2024-11-22 01:02:57,054 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 20 states.
[2024-11-22 01:02:57,121 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20.
[2024-11-22 01:02:57,124 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 20 states, 10 states have (on average 1.2) internal successors, (12), 10 states have internal predecessors, (12), 8 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8)
[2024-11-22 01:02:57,129 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 28 transitions.
[2024-11-22 01:02:57,131 INFO  L78                 Accepts]: Start accepts. Automaton has 20 states and 28 transitions. Word has length 8
[2024-11-22 01:02:57,134 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-22 01:02:57,134 INFO  L471      AbstractCegarLoop]: Abstraction has 20 states and 28 transitions.
[2024-11-22 01:02:57,135 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-22 01:02:57,136 INFO  L276                IsEmpty]: Start isEmpty. Operand 20 states and 28 transitions.
[2024-11-22 01:02:57,136 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 9
[2024-11-22 01:02:57,136 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-22 01:02:57,137 INFO  L215           NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-22 01:02:57,137 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2024-11-22 01:02:57,137 INFO  L396      AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-22 01:02:57,137 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-22 01:02:57,138 INFO  L85        PathProgramCache]: Analyzing trace with hash 302503139, now seen corresponding path program 1 times
[2024-11-22 01:02:57,138 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-22 01:02:57,138 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [794314011]
[2024-11-22 01:02:57,138 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-22 01:02:57,138 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-22 01:02:57,170 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-22 01:02:57,371 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-22 01:02:57,371 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-22 01:02:57,371 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [794314011]
[2024-11-22 01:02:57,371 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [794314011] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-22 01:02:57,371 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-22 01:02:57,371 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2024-11-22 01:02:57,371 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [120747898]
[2024-11-22 01:02:57,372 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-22 01:02:57,372 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2024-11-22 01:02:57,372 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-22 01:02:57,373 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2024-11-22 01:02:57,373 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30
[2024-11-22 01:02:57,373 INFO  L87              Difference]: Start difference. First operand 20 states and 28 transitions. Second operand  has 6 states, 5 states have (on average 1.4) internal successors, (7), 5 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-22 01:02:57,471 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-22 01:02:57,471 INFO  L93              Difference]: Finished difference Result 26 states and 33 transitions.
[2024-11-22 01:02:57,472 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2024-11-22 01:02:57,472 INFO  L78                 Accepts]: Start accepts. Automaton has  has 6 states, 5 states have (on average 1.4) internal successors, (7), 5 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8
[2024-11-22 01:02:57,472 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-22 01:02:57,472 INFO  L225             Difference]: With dead ends: 26
[2024-11-22 01:02:57,472 INFO  L226             Difference]: Without dead ends: 24
[2024-11-22 01:02:57,473 INFO  L431           NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42
[2024-11-22 01:02:57,474 INFO  L432           NwaCegarLoop]: 20 mSDtfsCounter, 4 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2024-11-22 01:02:57,474 INFO  L433           NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 76 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2024-11-22 01:02:57,474 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 24 states.
[2024-11-22 01:02:57,487 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24.
[2024-11-22 01:02:57,487 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 24 states, 13 states have (on average 1.1538461538461537) internal successors, (15), 13 states have internal predecessors, (15), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8)
[2024-11-22 01:02:57,488 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 31 transitions.
[2024-11-22 01:02:57,492 INFO  L78                 Accepts]: Start accepts. Automaton has 24 states and 31 transitions. Word has length 8
[2024-11-22 01:02:57,492 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-22 01:02:57,493 INFO  L471      AbstractCegarLoop]: Abstraction has 24 states and 31 transitions.
[2024-11-22 01:02:57,493 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 6 states, 5 states have (on average 1.4) internal successors, (7), 5 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-22 01:02:57,493 INFO  L276                IsEmpty]: Start isEmpty. Operand 24 states and 31 transitions.
[2024-11-22 01:02:57,493 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 14
[2024-11-22 01:02:57,493 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-22 01:02:57,493 INFO  L215           NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-22 01:02:57,493 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2024-11-22 01:02:57,494 INFO  L396      AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-22 01:02:57,494 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-22 01:02:57,494 INFO  L85        PathProgramCache]: Analyzing trace with hash 1964350918, now seen corresponding path program 1 times
[2024-11-22 01:02:57,495 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-22 01:02:57,495 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1332679022]
[2024-11-22 01:02:57,495 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-22 01:02:57,495 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-22 01:02:57,510 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-22 01:02:57,648 INFO  L134       CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-22 01:02:57,648 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-22 01:02:57,648 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1332679022]
[2024-11-22 01:02:57,648 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1332679022] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-22 01:02:57,649 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-22 01:02:57,649 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2024-11-22 01:02:57,649 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [701808001]
[2024-11-22 01:02:57,649 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-22 01:02:57,649 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2024-11-22 01:02:57,653 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-22 01:02:57,654 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2024-11-22 01:02:57,654 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42
[2024-11-22 01:02:57,655 INFO  L87              Difference]: Start difference. First operand 24 states and 31 transitions. Second operand  has 7 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 6 states have internal predecessors, (10), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2024-11-22 01:02:57,766 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-22 01:02:57,767 INFO  L93              Difference]: Finished difference Result 42 states and 57 transitions.
[2024-11-22 01:02:57,767 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. 
[2024-11-22 01:02:57,768 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 6 states have internal predecessors, (10), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 13
[2024-11-22 01:02:57,768 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-22 01:02:57,769 INFO  L225             Difference]: With dead ends: 42
[2024-11-22 01:02:57,769 INFO  L226             Difference]: Without dead ends: 40
[2024-11-22 01:02:57,770 INFO  L431           NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56
[2024-11-22 01:02:57,771 INFO  L432           NwaCegarLoop]: 22 mSDtfsCounter, 4 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 106 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2024-11-22 01:02:57,772 INFO  L433           NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 106 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2024-11-22 01:02:57,772 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 40 states.
[2024-11-22 01:02:57,783 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 37.
[2024-11-22 01:02:57,784 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 37 states, 19 states have (on average 1.1578947368421053) internal successors, (22), 20 states have internal predecessors, (22), 14 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (14), 13 states have call predecessors, (14), 14 states have call successors, (14)
[2024-11-22 01:02:57,786 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 50 transitions.
[2024-11-22 01:02:57,787 INFO  L78                 Accepts]: Start accepts. Automaton has 37 states and 50 transitions. Word has length 13
[2024-11-22 01:02:57,787 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-22 01:02:57,787 INFO  L471      AbstractCegarLoop]: Abstraction has 37 states and 50 transitions.
[2024-11-22 01:02:57,787 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 6 states have internal predecessors, (10), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2024-11-22 01:02:57,787 INFO  L276                IsEmpty]: Start isEmpty. Operand 37 states and 50 transitions.
[2024-11-22 01:02:57,788 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 19
[2024-11-22 01:02:57,788 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-22 01:02:57,789 INFO  L215           NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-22 01:02:57,789 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2024-11-22 01:02:57,789 INFO  L396      AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-22 01:02:57,789 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-22 01:02:57,791 INFO  L85        PathProgramCache]: Analyzing trace with hash -1092746621, now seen corresponding path program 1 times
[2024-11-22 01:02:57,792 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-22 01:02:57,792 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1260402697]
[2024-11-22 01:02:57,792 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-22 01:02:57,792 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-22 01:02:57,798 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-22 01:02:57,903 INFO  L134       CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked.
[2024-11-22 01:02:57,904 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-22 01:02:57,904 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1260402697]
[2024-11-22 01:02:57,905 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1260402697] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-22 01:02:57,905 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-22 01:02:57,905 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2024-11-22 01:02:57,905 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1509389760]
[2024-11-22 01:02:57,905 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-22 01:02:57,906 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2024-11-22 01:02:57,906 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-22 01:02:57,907 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2024-11-22 01:02:57,907 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42
[2024-11-22 01:02:57,907 INFO  L87              Difference]: Start difference. First operand 37 states and 50 transitions. Second operand  has 7 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 6 states have internal predecessors, (10), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2)
[2024-11-22 01:02:57,979 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-22 01:02:57,980 INFO  L93              Difference]: Finished difference Result 46 states and 60 transitions.
[2024-11-22 01:02:57,980 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. 
[2024-11-22 01:02:57,980 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 6 states have internal predecessors, (10), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 18
[2024-11-22 01:02:57,980 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-22 01:02:57,981 INFO  L225             Difference]: With dead ends: 46
[2024-11-22 01:02:57,981 INFO  L226             Difference]: Without dead ends: 44
[2024-11-22 01:02:57,981 INFO  L431           NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56
[2024-11-22 01:02:57,982 INFO  L432           NwaCegarLoop]: 22 mSDtfsCounter, 4 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 91 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2024-11-22 01:02:57,983 INFO  L433           NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 91 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2024-11-22 01:02:57,983 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 44 states.
[2024-11-22 01:02:57,989 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 42.
[2024-11-22 01:02:57,990 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 42 states, 22 states have (on average 1.1363636363636365) internal successors, (25), 23 states have internal predecessors, (25), 15 states have call successors, (15), 4 states have call predecessors, (15), 4 states have return successors, (15), 14 states have call predecessors, (15), 15 states have call successors, (15)
[2024-11-22 01:02:57,990 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 55 transitions.
[2024-11-22 01:02:57,991 INFO  L78                 Accepts]: Start accepts. Automaton has 42 states and 55 transitions. Word has length 18
[2024-11-22 01:02:57,994 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-22 01:02:57,994 INFO  L471      AbstractCegarLoop]: Abstraction has 42 states and 55 transitions.
[2024-11-22 01:02:57,994 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 6 states have internal predecessors, (10), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2)
[2024-11-22 01:02:57,995 INFO  L276                IsEmpty]: Start isEmpty. Operand 42 states and 55 transitions.
[2024-11-22 01:02:57,995 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 24
[2024-11-22 01:02:57,995 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-22 01:02:57,995 INFO  L215           NwaCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-22 01:02:57,995 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3
[2024-11-22 01:02:57,996 INFO  L396      AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-22 01:02:57,996 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-22 01:02:57,996 INFO  L85        PathProgramCache]: Analyzing trace with hash 961880998, now seen corresponding path program 1 times
[2024-11-22 01:02:57,996 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-22 01:02:57,996 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1521810198]
[2024-11-22 01:02:57,996 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-22 01:02:57,997 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-22 01:02:58,012 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-22 01:02:58,088 INFO  L134       CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked.
[2024-11-22 01:02:58,092 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-22 01:02:58,092 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1521810198]
[2024-11-22 01:02:58,092 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1521810198] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-22 01:02:58,092 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-22 01:02:58,093 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2024-11-22 01:02:58,093 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2136784561]
[2024-11-22 01:02:58,093 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-22 01:02:58,093 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2024-11-22 01:02:58,093 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-22 01:02:58,093 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2024-11-22 01:02:58,094 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30
[2024-11-22 01:02:58,094 INFO  L87              Difference]: Start difference. First operand 42 states and 55 transitions. Second operand  has 6 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3)
[2024-11-22 01:02:58,142 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-22 01:02:58,142 INFO  L93              Difference]: Finished difference Result 89 states and 120 transitions.
[2024-11-22 01:02:58,143 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2024-11-22 01:02:58,143 INFO  L78                 Accepts]: Start accepts. Automaton has  has 6 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 23
[2024-11-22 01:02:58,143 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-22 01:02:58,145 INFO  L225             Difference]: With dead ends: 89
[2024-11-22 01:02:58,145 INFO  L226             Difference]: Without dead ends: 56
[2024-11-22 01:02:58,145 INFO  L431           NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42
[2024-11-22 01:02:58,146 INFO  L432           NwaCegarLoop]: 26 mSDtfsCounter, 3 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 88 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2024-11-22 01:02:58,146 INFO  L433           NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 88 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2024-11-22 01:02:58,147 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 56 states.
[2024-11-22 01:02:58,154 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56.
[2024-11-22 01:02:58,155 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 56 states, 27 states have (on average 1.1111111111111112) internal successors, (30), 28 states have internal predecessors, (30), 23 states have call successors, (23), 5 states have call predecessors, (23), 5 states have return successors, (23), 22 states have call predecessors, (23), 23 states have call successors, (23)
[2024-11-22 01:02:58,156 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 76 transitions.
[2024-11-22 01:02:58,156 INFO  L78                 Accepts]: Start accepts. Automaton has 56 states and 76 transitions. Word has length 23
[2024-11-22 01:02:58,156 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-22 01:02:58,156 INFO  L471      AbstractCegarLoop]: Abstraction has 56 states and 76 transitions.
[2024-11-22 01:02:58,156 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 6 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3)
[2024-11-22 01:02:58,157 INFO  L276                IsEmpty]: Start isEmpty. Operand 56 states and 76 transitions.
[2024-11-22 01:02:58,157 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 45
[2024-11-22 01:02:58,157 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-22 01:02:58,158 INFO  L215           NwaCegarLoop]: trace histogram [8, 7, 7, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1]
[2024-11-22 01:02:58,158 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4
[2024-11-22 01:02:58,158 INFO  L396      AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-22 01:02:58,158 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-22 01:02:58,158 INFO  L85        PathProgramCache]: Analyzing trace with hash 1962382770, now seen corresponding path program 1 times
[2024-11-22 01:02:58,159 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-22 01:02:58,159 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1093874217]
[2024-11-22 01:02:58,159 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-22 01:02:58,159 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-22 01:02:58,167 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-22 01:02:58,216 INFO  L134       CoverageAnalysis]: Checked inductivity of 103 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked.
[2024-11-22 01:02:58,216 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-22 01:02:58,216 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1093874217]
[2024-11-22 01:02:58,216 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1093874217] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-22 01:02:58,216 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-22 01:02:58,217 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2024-11-22 01:02:58,217 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [582012970]
[2024-11-22 01:02:58,217 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-22 01:02:58,218 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2024-11-22 01:02:58,218 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-22 01:02:58,218 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2024-11-22 01:02:58,219 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2024-11-22 01:02:58,219 INFO  L87              Difference]: Start difference. First operand 56 states and 76 transitions. Second operand  has 5 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7)
[2024-11-22 01:02:58,254 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-22 01:02:58,254 INFO  L93              Difference]: Finished difference Result 62 states and 81 transitions.
[2024-11-22 01:02:58,254 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2024-11-22 01:02:58,255 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 44
[2024-11-22 01:02:58,255 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-22 01:02:58,256 INFO  L225             Difference]: With dead ends: 62
[2024-11-22 01:02:58,256 INFO  L226             Difference]: Without dead ends: 60
[2024-11-22 01:02:58,256 INFO  L431           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
[2024-11-22 01:02:58,257 INFO  L432           NwaCegarLoop]: 23 mSDtfsCounter, 4 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 71 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2024-11-22 01:02:58,257 INFO  L433           NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 71 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2024-11-22 01:02:58,257 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 60 states.
[2024-11-22 01:02:58,265 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60.
[2024-11-22 01:02:58,265 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 60 states, 30 states have (on average 1.1) internal successors, (33), 31 states have internal predecessors, (33), 23 states have call successors, (23), 6 states have call predecessors, (23), 6 states have return successors, (23), 22 states have call predecessors, (23), 23 states have call successors, (23)
[2024-11-22 01:02:58,266 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 79 transitions.
[2024-11-22 01:02:58,266 INFO  L78                 Accepts]: Start accepts. Automaton has 60 states and 79 transitions. Word has length 44
[2024-11-22 01:02:58,267 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-22 01:02:58,267 INFO  L471      AbstractCegarLoop]: Abstraction has 60 states and 79 transitions.
[2024-11-22 01:02:58,267 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7)
[2024-11-22 01:02:58,267 INFO  L276                IsEmpty]: Start isEmpty. Operand 60 states and 79 transitions.
[2024-11-22 01:02:58,268 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 79
[2024-11-22 01:02:58,268 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-22 01:02:58,269 INFO  L215           NwaCegarLoop]: trace histogram [14, 13, 13, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-22 01:02:58,269 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5
[2024-11-22 01:02:58,269 INFO  L396      AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-22 01:02:58,269 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-22 01:02:58,269 INFO  L85        PathProgramCache]: Analyzing trace with hash -896370565, now seen corresponding path program 1 times
[2024-11-22 01:02:58,270 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-22 01:02:58,270 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [615536585]
[2024-11-22 01:02:58,284 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-22 01:02:58,284 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-22 01:02:58,314 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-22 01:02:58,584 INFO  L134       CoverageAnalysis]: Checked inductivity of 353 backedges. 30 proven. 11 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked.
[2024-11-22 01:02:58,585 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-22 01:02:58,585 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [615536585]
[2024-11-22 01:02:58,585 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [615536585] provided 0 perfect and 1 imperfect interpolant sequences
[2024-11-22 01:02:58,586 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1906441838]
[2024-11-22 01:02:58,586 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-22 01:02:58,586 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-22 01:02:58,586 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2024-11-22 01:02:58,588 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)
[2024-11-22 01:02:58,589 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process
[2024-11-22 01:02:58,649 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-22 01:02:58,651 INFO  L255         TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 14 conjuncts are in the unsatisfiable core
[2024-11-22 01:02:58,660 INFO  L278         TraceCheckSpWp]: Computing forward predicates...
[2024-11-22 01:02:58,985 INFO  L134       CoverageAnalysis]: Checked inductivity of 353 backedges. 33 proven. 8 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked.
[2024-11-22 01:02:58,985 INFO  L311         TraceCheckSpWp]: Computing backward predicates...
[2024-11-22 01:02:59,424 INFO  L134       CoverageAnalysis]: Checked inductivity of 353 backedges. 34 proven. 7 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked.
[2024-11-22 01:02:59,424 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1906441838] provided 0 perfect and 2 imperfect interpolant sequences
[2024-11-22 01:02:59,425 INFO  L185   FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2024-11-22 01:02:59,425 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 12, 11] total 24
[2024-11-22 01:02:59,425 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1413768411]
[2024-11-22 01:02:59,425 INFO  L85    oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2024-11-22 01:02:59,425 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 24 states
[2024-11-22 01:02:59,426 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-22 01:02:59,426 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants.
[2024-11-22 01:02:59,426 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=142, Invalid=410, Unknown=0, NotChecked=0, Total=552
[2024-11-22 01:02:59,427 INFO  L87              Difference]: Start difference. First operand 60 states and 79 transitions. Second operand  has 24 states, 22 states have (on average 1.5) internal successors, (33), 22 states have internal predecessors, (33), 11 states have call successors, (41), 3 states have call predecessors, (41), 1 states have return successors, (38), 11 states have call predecessors, (38), 11 states have call successors, (38)
[2024-11-22 01:02:59,669 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-22 01:02:59,672 INFO  L93              Difference]: Finished difference Result 80 states and 106 transitions.
[2024-11-22 01:02:59,673 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. 
[2024-11-22 01:02:59,673 INFO  L78                 Accepts]: Start accepts. Automaton has  has 24 states, 22 states have (on average 1.5) internal successors, (33), 22 states have internal predecessors, (33), 11 states have call successors, (41), 3 states have call predecessors, (41), 1 states have return successors, (38), 11 states have call predecessors, (38), 11 states have call successors, (38) Word has length 78
[2024-11-22 01:02:59,673 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-22 01:02:59,674 INFO  L225             Difference]: With dead ends: 80
[2024-11-22 01:02:59,677 INFO  L226             Difference]: Without dead ends: 78
[2024-11-22 01:02:59,678 INFO  L431           NwaCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 138 SyntacticMatches, 5 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 296 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=187, Invalid=569, Unknown=0, NotChecked=0, Total=756
[2024-11-22 01:02:59,678 INFO  L432           NwaCegarLoop]: 42 mSDtfsCounter, 4 mSDsluCounter, 420 mSDsCounter, 0 mSdLazyCounter, 397 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 462 SdHoareTripleChecker+Invalid, 412 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 397 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2024-11-22 01:02:59,679 INFO  L433           NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 462 Invalid, 412 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 397 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2024-11-22 01:02:59,679 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 78 states.
[2024-11-22 01:02:59,691 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 68.
[2024-11-22 01:02:59,691 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 68 states, 36 states have (on average 1.0833333333333333) internal successors, (39), 37 states have internal predecessors, (39), 23 states have call successors, (23), 8 states have call predecessors, (23), 8 states have return successors, (23), 22 states have call predecessors, (23), 23 states have call successors, (23)
[2024-11-22 01:02:59,694 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 85 transitions.
[2024-11-22 01:02:59,695 INFO  L78                 Accepts]: Start accepts. Automaton has 68 states and 85 transitions. Word has length 78
[2024-11-22 01:02:59,695 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-22 01:02:59,696 INFO  L471      AbstractCegarLoop]: Abstraction has 68 states and 85 transitions.
[2024-11-22 01:02:59,696 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 24 states, 22 states have (on average 1.5) internal successors, (33), 22 states have internal predecessors, (33), 11 states have call successors, (41), 3 states have call predecessors, (41), 1 states have return successors, (38), 11 states have call predecessors, (38), 11 states have call successors, (38)
[2024-11-22 01:02:59,696 INFO  L276                IsEmpty]: Start isEmpty. Operand 68 states and 85 transitions.
[2024-11-22 01:02:59,698 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 84
[2024-11-22 01:02:59,700 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-22 01:02:59,700 INFO  L215           NwaCegarLoop]: trace histogram [15, 14, 14, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-22 01:02:59,708 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0
[2024-11-22 01:02:59,900 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-22 01:02:59,901 INFO  L396      AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-22 01:02:59,902 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-22 01:02:59,902 INFO  L85        PathProgramCache]: Analyzing trace with hash -1405710098, now seen corresponding path program 2 times
[2024-11-22 01:02:59,902 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-22 01:02:59,902 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1622411800]
[2024-11-22 01:02:59,903 INFO  L93    rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
[2024-11-22 01:02:59,903 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-22 01:02:59,930 INFO  L227   tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2024-11-22 01:02:59,937 INFO  L228   tOrderPrioritization]: Conjunction of SSA is unsat
[2024-11-22 01:03:00,086 INFO  L134       CoverageAnalysis]: Checked inductivity of 409 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 372 trivial. 0 not checked.
[2024-11-22 01:03:00,086 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-22 01:03:00,090 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1622411800]
[2024-11-22 01:03:00,090 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1622411800] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-22 01:03:00,090 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-22 01:03:00,090 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2024-11-22 01:03:00,090 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1812876993]
[2024-11-22 01:03:00,090 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-22 01:03:00,091 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2024-11-22 01:03:00,091 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-22 01:03:00,091 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2024-11-22 01:03:00,091 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30
[2024-11-22 01:03:00,091 INFO  L87              Difference]: Start difference. First operand 68 states and 85 transitions. Second operand  has 6 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10)
[2024-11-22 01:03:00,158 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-22 01:03:00,162 INFO  L93              Difference]: Finished difference Result 68 states and 85 transitions.
[2024-11-22 01:03:00,162 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2024-11-22 01:03:00,163 INFO  L78                 Accepts]: Start accepts. Automaton has  has 6 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 83
[2024-11-22 01:03:00,163 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-22 01:03:00,163 INFO  L225             Difference]: With dead ends: 68
[2024-11-22 01:03:00,163 INFO  L226             Difference]: Without dead ends: 0
[2024-11-22 01:03:00,164 INFO  L431           NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42
[2024-11-22 01:03:00,164 INFO  L432           NwaCegarLoop]: 21 mSDtfsCounter, 4 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 77 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2024-11-22 01:03:00,165 INFO  L433           NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 77 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2024-11-22 01:03:00,165 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 0 states.
[2024-11-22 01:03:00,165 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0.
[2024-11-22 01:03:00,169 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 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)
[2024-11-22 01:03:00,169 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions.
[2024-11-22 01:03:00,169 INFO  L78                 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 83
[2024-11-22 01:03:00,169 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-22 01:03:00,169 INFO  L471      AbstractCegarLoop]: Abstraction has 0 states and 0 transitions.
[2024-11-22 01:03:00,170 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 6 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10)
[2024-11-22 01:03:00,170 INFO  L276                IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions.
[2024-11-22 01:03:00,170 INFO  L282                IsEmpty]: Finished isEmpty. No accepting run.
[2024-11-22 01:03:00,172 INFO  L782   garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining)
[2024-11-22 01:03:00,172 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7
[2024-11-22 01:03:00,174 INFO  L407         BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1]
[2024-11-22 01:03:00,180 INFO  L343    DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions.
[2024-11-22 01:03:00,704 INFO  L170   ceAbstractionStarter]: Computing trace abstraction results
[2024-11-22 01:03:00,737 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.11 01:03:00 BoogieIcfgContainer
[2024-11-22 01:03:00,740 INFO  L131        PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2024-11-22 01:03:00,740 INFO  L112        PluginConnector]: ------------------------Witness Printer----------------------------
[2024-11-22 01:03:00,741 INFO  L270        PluginConnector]: Initializing Witness Printer...
[2024-11-22 01:03:00,741 INFO  L274        PluginConnector]: Witness Printer initialized
[2024-11-22 01:03:00,741 INFO  L184        PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:02:56" (3/4) ...
[2024-11-22 01:03:00,743 INFO  L142         WitnessPrinter]: Generating witness for correct program
[2024-11-22 01:03:00,749 INFO  L361     RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert
[2024-11-22 01:03:00,755 INFO  L925   BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges
[2024-11-22 01:03:00,756 INFO  L925   BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges
[2024-11-22 01:03:00,756 INFO  L925   BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges
[2024-11-22 01:03:00,756 INFO  L925   BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges
[2024-11-22 01:03:00,875 INFO  L149         WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml
[2024-11-22 01:03:00,877 INFO  L149         WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml
[2024-11-22 01:03:00,877 INFO  L131        PluginConnector]: ------------------------ END Witness Printer----------------------------
[2024-11-22 01:03:00,877 INFO  L158              Benchmark]: Toolchain (without parser) took 4974.64ms. Allocated memory was 184.5MB in the beginning and 222.3MB in the end (delta: 37.7MB). Free memory was 157.6MB in the beginning and 163.6MB in the end (delta: -6.0MB). Peak memory consumption was 30.1MB. Max. memory is 16.1GB.
[2024-11-22 01:03:00,878 INFO  L158              Benchmark]: CDTParser took 0.09ms. Allocated memory is still 125.8MB. Free memory is still 85.8MB. There was no memory consumed. Max. memory is 16.1GB.
[2024-11-22 01:03:00,879 INFO  L158              Benchmark]: CACSL2BoogieTranslator took 223.86ms. Allocated memory is still 184.5MB. Free memory was 157.4MB in the beginning and 146.3MB in the end (delta: 11.1MB). Peak memory consumption was 14.9MB. Max. memory is 16.1GB.
[2024-11-22 01:03:00,879 INFO  L158              Benchmark]: Boogie Procedure Inliner took 23.79ms. Allocated memory is still 184.5MB. Free memory was 146.3MB in the beginning and 145.2MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB.
[2024-11-22 01:03:00,879 INFO  L158              Benchmark]: Boogie Preprocessor took 28.84ms. Allocated memory is still 184.5MB. Free memory was 145.2MB in the beginning and 143.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB.
[2024-11-22 01:03:00,879 INFO  L158              Benchmark]: RCFGBuilder took 255.51ms. Allocated memory is still 184.5MB. Free memory was 143.1MB in the beginning and 131.6MB in the end (delta: 11.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB.
[2024-11-22 01:03:00,880 INFO  L158              Benchmark]: TraceAbstraction took 4298.94ms. Allocated memory was 184.5MB in the beginning and 222.3MB in the end (delta: 37.7MB). Free memory was 131.6MB in the beginning and 167.8MB in the end (delta: -36.2MB). Peak memory consumption was 106.0MB. Max. memory is 16.1GB.
[2024-11-22 01:03:00,885 INFO  L158              Benchmark]: Witness Printer took 136.46ms. Allocated memory is still 222.3MB. Free memory was 167.8MB in the beginning and 163.6MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB.
[2024-11-22 01:03:00,886 INFO  L338   ainManager$Toolchain]: #######################  End [Toolchain 1] #######################
 --- Results ---
 * Results from de.uni_freiburg.informatik.ultimate.core:
  - StatisticsResult: Toolchain Benchmarks
    Benchmark results are:
 * CDTParser took 0.09ms. Allocated memory is still 125.8MB. Free memory is still 85.8MB. There was no memory consumed. Max. memory is 16.1GB.
 * CACSL2BoogieTranslator took 223.86ms. Allocated memory is still 184.5MB. Free memory was 157.4MB in the beginning and 146.3MB in the end (delta: 11.1MB). Peak memory consumption was 14.9MB. Max. memory is 16.1GB.
 * Boogie Procedure Inliner took 23.79ms. Allocated memory is still 184.5MB. Free memory was 146.3MB in the beginning and 145.2MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB.
 * Boogie Preprocessor took 28.84ms. Allocated memory is still 184.5MB. Free memory was 145.2MB in the beginning and 143.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB.
 * RCFGBuilder took 255.51ms. Allocated memory is still 184.5MB. Free memory was 143.1MB in the beginning and 131.6MB in the end (delta: 11.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB.
 * TraceAbstraction took 4298.94ms. Allocated memory was 184.5MB in the beginning and 222.3MB in the end (delta: 37.7MB). Free memory was 131.6MB in the beginning and 167.8MB in the end (delta: -36.2MB). Peak memory consumption was 106.0MB. Max. memory is 16.1GB.
 * Witness Printer took 136.46ms. Allocated memory is still 222.3MB. Free memory was 167.8MB in the beginning and 163.6MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB.
 * 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
  - PositiveResult [Line: 13]: a call to reach_error is unreachable
    For all program executions holds that a call to reach_error is unreachable at this location
  - StatisticsResult: Ultimate Automizer benchmark data
    CFG has 2 procedures, 23 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 3.7s, OverallIterations: 8, TraceHistogramMax: 15, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 63 SdHoareTripleChecker+Valid, 0.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 27 mSDsluCounter, 1026 SdHoareTripleChecker+Invalid, 0.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 820 mSDsCounter, 26 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 685 IncrementalHoareTripleChecker+Invalid, 711 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 26 mSolverCounterUnsat, 206 mSDtfsCounter, 685 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 216 GetRequests, 153 SyntacticMatches, 5 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 312 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=68occurred in iteration=7, InterpolantAutomatonStates: 54, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 8 MinimizatonAttempts, 15 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.9s InterpolantComputationTime, 353 NumberOfCodeBlocks, 353 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 421 ConstructedInterpolants, 0 QuantifiedInterpolants, 1037 SizeOfPredicates, 1 NumberOfNonLiveVariables, 169 ConjunctsInSsa, 14 ConjunctsInUnsatCore, 10 InterpolantComputations, 7 PerfectInterpolantSequences, 1573/1599 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
  - AllSpecificationsHoldResult: All specifications hold
    1 specifications checked. All of them hold
  - InvariantResult [Line: 16]: Loop Invariant
    Derived loop invariant: ((0 < i) || (i == 0))
  - InvariantResult [Line: 18]: Loop Invariant
    Derived loop invariant: ((((((2 == j) && (i == 1)) || ((i == 0) && (j == 0))) || ((((j <= 4) && (((long long) 2 * i) <= ((long long) 6 + j))) && (2 <= j)) && (((long long) 2 + j) <= ((long long) 2 * i)))) || (((1 <= i) && (i <= 3)) && (j == 0))) || (((j <= 4) && (j == ((long long) 2 * i))) && (2 <= i)))
  - ProcedureContractResult [Line: 13]: Procedure Contract for __VERIFIER_assert
    Derived contract for procedure __VERIFIER_assert. Requires: (cond != 0) Ensures: (cond != 0)
RESULT: Ultimate proved your program to be correct!
[2024-11-22 01:03:00,913 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...
--- End real Ultimate output ---

Execution finished normally
Writing output log to file Ultimate.log
Result:
TRUE