./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 3061b6dc
Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/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-3061b6d-m
[2024-11-18 13:18:05,016 INFO  L188        SettingsManager]: Resetting all preferences to default values...
[2024-11-18 13:18:05,082 INFO  L114        SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf
[2024-11-18 13:18:05,086 WARN  L101        SettingsManager]: Preference file contains the following unknown settings:
[2024-11-18 13:18:05,086 WARN  L103        SettingsManager]:   * de.uni_freiburg.informatik.ultimate.core.Log level for class
[2024-11-18 13:18:05,106 INFO  L130        SettingsManager]: Preferences different from defaults after loading the file:
[2024-11-18 13:18:05,107 INFO  L151        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2024-11-18 13:18:05,109 INFO  L153        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2024-11-18 13:18:05,110 INFO  L151        SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults:
[2024-11-18 13:18:05,111 INFO  L153        SettingsManager]:  * Use memory slicer=true
[2024-11-18 13:18:05,111 INFO  L151        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2024-11-18 13:18:05,112 INFO  L153        SettingsManager]:  * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2024-11-18 13:18:05,112 INFO  L151        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2024-11-18 13:18:05,114 INFO  L153        SettingsManager]:  * Create parallel compositions if possible=false
[2024-11-18 13:18:05,115 INFO  L153        SettingsManager]:  * Use SBE=true
[2024-11-18 13:18:05,115 INFO  L151        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2024-11-18 13:18:05,115 INFO  L153        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2024-11-18 13:18:05,116 INFO  L153        SettingsManager]:  * sizeof long=4
[2024-11-18 13:18:05,116 INFO  L153        SettingsManager]:  * Overapproximate operations on floating types=true
[2024-11-18 13:18:05,116 INFO  L153        SettingsManager]:  * sizeof POINTER=4
[2024-11-18 13:18:05,117 INFO  L153        SettingsManager]:  * Check division by zero=IGNORE
[2024-11-18 13:18:05,120 INFO  L153        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2024-11-18 13:18:05,121 INFO  L153        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2024-11-18 13:18:05,121 INFO  L153        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2024-11-18 13:18:05,121 INFO  L153        SettingsManager]:  * Allow undefined functions=false
[2024-11-18 13:18:05,121 INFO  L153        SettingsManager]:  * sizeof long double=12
[2024-11-18 13:18:05,122 INFO  L153        SettingsManager]:  * Check if freed pointer was valid=false
[2024-11-18 13:18:05,122 INFO  L153        SettingsManager]:  * Use constant arrays=true
[2024-11-18 13:18:05,122 INFO  L151        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2024-11-18 13:18:05,122 INFO  L153        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2024-11-18 13:18:05,123 INFO  L153        SettingsManager]:  * Only consider context switches at boundaries of atomic blocks=true
[2024-11-18 13:18:05,123 INFO  L153        SettingsManager]:  * SMT solver=External_DefaultMode
[2024-11-18 13:18:05,123 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2024-11-18 13:18:05,123 INFO  L151        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2024-11-18 13:18:05,123 INFO  L153        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2024-11-18 13:18:05,124 INFO  L153        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopHeads
[2024-11-18 13:18:05,124 INFO  L153        SettingsManager]:  * Trace refinement strategy=CAMEL
[2024-11-18 13:18:05,124 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2024-11-18 13:18:05,124 INFO  L153        SettingsManager]:  * Apply one-shot large block encoding in concurrent analysis=false
[2024-11-18 13:18:05,125 INFO  L153        SettingsManager]:  * Automaton type used in concurrency analysis=PETRI_NET
[2024-11-18 13:18:05,125 INFO  L153        SettingsManager]:  * Order on configurations for Petri net unfoldings=DBO
[2024-11-18 13:18:05,125 INFO  L153        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2024-11-18 13:18:05,125 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
[2024-11-18 13:18:05,358 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2024-11-18 13:18:05,383 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2024-11-18 13:18:05,386 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2024-11-18 13:18:05,387 INFO  L270        PluginConnector]: Initializing CDTParser...
[2024-11-18 13:18:05,388 INFO  L274        PluginConnector]: CDTParser initialized
[2024-11-18 13:18:05,389 INFO  L431   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loop-lit/bh2017-ex1-poly.i
[2024-11-18 13:18:06,792 INFO  L533              CDTParser]: Created temporary CDT project at NULL
[2024-11-18 13:18:06,967 INFO  L384              CDTParser]: Found 1 translation units.
[2024-11-18 13:18:06,968 INFO  L180              CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-lit/bh2017-ex1-poly.i
[2024-11-18 13:18:06,977 INFO  L427              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5c474de65/c49983824cfd48019110ab04aa6e2124/FLAGfb3aa052c
[2024-11-18 13:18:07,359 INFO  L435              CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5c474de65/c49983824cfd48019110ab04aa6e2124
[2024-11-18 13:18:07,362 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2024-11-18 13:18:07,363 INFO  L133        ToolchainWalker]: Walking toolchain with 6 elements.
[2024-11-18 13:18:07,366 INFO  L112        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2024-11-18 13:18:07,367 INFO  L270        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2024-11-18 13:18:07,372 INFO  L274        PluginConnector]: CACSL2BoogieTranslator initialized
[2024-11-18 13:18:07,373 INFO  L184        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 01:18:07" (1/1) ...
[2024-11-18 13:18:07,375 INFO  L204        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@484434cf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:18:07, skipping insertion in model container
[2024-11-18 13:18:07,376 INFO  L184        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 01:18:07" (1/1) ...
[2024-11-18 13:18:07,398 INFO  L175         MainTranslator]: Built tables and reachable declarations
[2024-11-18 13:18:07,592 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]
[2024-11-18 13:18:07,612 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2024-11-18 13:18:07,650 INFO  L200         MainTranslator]: Completed pre-run
[2024-11-18 13:18:07,672 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]
[2024-11-18 13:18:07,680 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2024-11-18 13:18:07,697 INFO  L204         MainTranslator]: Completed translation
[2024-11-18 13:18:07,698 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:18:07 WrapperNode
[2024-11-18 13:18:07,698 INFO  L131        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2024-11-18 13:18:07,701 INFO  L112        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2024-11-18 13:18:07,701 INFO  L270        PluginConnector]: Initializing Boogie Procedure Inliner...
[2024-11-18 13:18:07,702 INFO  L274        PluginConnector]: Boogie Procedure Inliner initialized
[2024-11-18 13:18:07,708 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:18:07" (1/1) ...
[2024-11-18 13:18:07,714 INFO  L184        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:18:07" (1/1) ...
[2024-11-18 13:18:07,754 INFO  L138                Inliner]: procedures = 14, calls = 14, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 34
[2024-11-18 13:18:07,755 INFO  L131        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2024-11-18 13:18:07,755 INFO  L112        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2024-11-18 13:18:07,756 INFO  L270        PluginConnector]: Initializing Boogie Preprocessor...
[2024-11-18 13:18:07,756 INFO  L274        PluginConnector]: Boogie Preprocessor initialized
[2024-11-18 13:18:07,766 INFO  L184        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:18:07" (1/1) ...
[2024-11-18 13:18:07,766 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:18:07" (1/1) ...
[2024-11-18 13:18:07,771 INFO  L184        PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:18:07" (1/1) ...
[2024-11-18 13:18:07,787 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].
[2024-11-18 13:18:07,788 INFO  L184        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:18:07" (1/1) ...
[2024-11-18 13:18:07,788 INFO  L184        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:18:07" (1/1) ...
[2024-11-18 13:18:07,790 INFO  L184        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:18:07" (1/1) ...
[2024-11-18 13:18:07,793 INFO  L184        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:18:07" (1/1) ...
[2024-11-18 13:18:07,793 INFO  L184        PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:18:07" (1/1) ...
[2024-11-18 13:18:07,794 INFO  L184        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:18:07" (1/1) ...
[2024-11-18 13:18:07,795 INFO  L131        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2024-11-18 13:18:07,796 INFO  L112        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2024-11-18 13:18:07,796 INFO  L270        PluginConnector]: Initializing RCFGBuilder...
[2024-11-18 13:18:07,796 INFO  L274        PluginConnector]: RCFGBuilder initialized
[2024-11-18 13:18:07,797 INFO  L184        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:18:07" (1/1) ...
[2024-11-18 13:18:07,803 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2024-11-18 13:18:07,814 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2024-11-18 13:18:07,826 INFO  L229       MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null)
[2024-11-18 13:18:07,829 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process
[2024-11-18 13:18:07,871 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2024-11-18 13:18:07,872 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int#0
[2024-11-18 13:18:07,872 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2024-11-18 13:18:07,872 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2024-11-18 13:18:07,872 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_assert
[2024-11-18 13:18:07,872 INFO  L138     BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert
[2024-11-18 13:18:07,919 INFO  L238             CfgBuilder]: Building ICFG
[2024-11-18 13:18:07,920 INFO  L264             CfgBuilder]: Building CFG for each procedure with an implementation
[2024-11-18 13:18:08,021 INFO  L?                        ?]: Removed 5 outVars from TransFormulas that were not future-live.
[2024-11-18 13:18:08,022 INFO  L287             CfgBuilder]: Performing block encoding
[2024-11-18 13:18:08,036 INFO  L311             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2024-11-18 13:18:08,039 INFO  L316             CfgBuilder]: Removed 2 assume(true) statements.
[2024-11-18 13:18:08,039 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 01:18:08 BoogieIcfgContainer
[2024-11-18 13:18:08,040 INFO  L131        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2024-11-18 13:18:08,041 INFO  L112        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2024-11-18 13:18:08,041 INFO  L270        PluginConnector]: Initializing TraceAbstraction...
[2024-11-18 13:18:08,044 INFO  L274        PluginConnector]: TraceAbstraction initialized
[2024-11-18 13:18:08,045 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 01:18:07" (1/3) ...
[2024-11-18 13:18:08,045 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c42f04c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 01:18:08, skipping insertion in model container
[2024-11-18 13:18:08,045 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:18:07" (2/3) ...
[2024-11-18 13:18:08,046 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c42f04c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 01:18:08, skipping insertion in model container
[2024-11-18 13:18:08,046 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 01:18:08" (3/3) ...
[2024-11-18 13:18:08,047 INFO  L112   eAbstractionObserver]: Analyzing ICFG bh2017-ex1-poly.i
[2024-11-18 13:18:08,060 INFO  L214   ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2024-11-18 13:18:08,060 INFO  L154   ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2024-11-18 13:18:08,121 INFO  L332      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2024-11-18 13:18:08,129 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;@5a0c36a3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2024-11-18 13:18:08,130 INFO  L334      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2024-11-18 13:18:08,135 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)
[2024-11-18 13:18:08,142 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 9
[2024-11-18 13:18:08,143 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-18 13:18:08,143 INFO  L215           NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-18 13:18:08,144 INFO  L396      AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-18 13:18:08,152 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-18 13:18:08,152 INFO  L85        PathProgramCache]: Analyzing trace with hash 300894425, now seen corresponding path program 1 times
[2024-11-18 13:18:08,161 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-18 13:18:08,161 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1977938057]
[2024-11-18 13:18:08,162 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-18 13:18:08,162 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-18 13:18:08,255 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-18 13:18:08,354 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-18 13:18:08,354 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-18 13:18:08,355 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1977938057]
[2024-11-18 13:18:08,355 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1977938057] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-18 13:18:08,355 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-18 13:18:08,356 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2024-11-18 13:18:08,357 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [588892507]
[2024-11-18 13:18:08,358 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-18 13:18:08,361 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2024-11-18 13:18:08,362 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-18 13:18:08,379 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2024-11-18 13:18:08,380 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2024-11-18 13:18:08,382 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)
[2024-11-18 13:18:08,413 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-18 13:18:08,414 INFO  L93              Difference]: Finished difference Result 45 states and 77 transitions.
[2024-11-18 13:18:08,415 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2024-11-18 13:18:08,417 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
[2024-11-18 13:18:08,417 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-18 13:18:08,422 INFO  L225             Difference]: With dead ends: 45
[2024-11-18 13:18:08,422 INFO  L226             Difference]: Without dead ends: 20
[2024-11-18 13:18:08,425 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
[2024-11-18 13:18:08,427 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
[2024-11-18 13:18:08,428 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]
[2024-11-18 13:18:08,441 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 20 states.
[2024-11-18 13:18:08,457 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20.
[2024-11-18 13:18:08,458 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)
[2024-11-18 13:18:08,459 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 28 transitions.
[2024-11-18 13:18:08,460 INFO  L78                 Accepts]: Start accepts. Automaton has 20 states and 28 transitions. Word has length 8
[2024-11-18 13:18:08,460 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-18 13:18:08,461 INFO  L471      AbstractCegarLoop]: Abstraction has 20 states and 28 transitions.
[2024-11-18 13:18:08,461 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)
[2024-11-18 13:18:08,461 INFO  L276                IsEmpty]: Start isEmpty. Operand 20 states and 28 transitions.
[2024-11-18 13:18:08,462 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 9
[2024-11-18 13:18:08,462 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-18 13:18:08,462 INFO  L215           NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-18 13:18:08,462 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2024-11-18 13:18:08,462 INFO  L396      AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-18 13:18:08,463 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-18 13:18:08,463 INFO  L85        PathProgramCache]: Analyzing trace with hash 302503139, now seen corresponding path program 1 times
[2024-11-18 13:18:08,463 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-18 13:18:08,463 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1355462452]
[2024-11-18 13:18:08,463 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-18 13:18:08,464 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-18 13:18:08,479 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-18 13:18:08,606 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-18 13:18:08,606 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-18 13:18:08,606 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1355462452]
[2024-11-18 13:18:08,607 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1355462452] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-18 13:18:08,607 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-18 13:18:08,607 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2024-11-18 13:18:08,607 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1115502712]
[2024-11-18 13:18:08,607 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-18 13:18:08,608 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2024-11-18 13:18:08,609 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-18 13:18:08,609 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2024-11-18 13:18:08,610 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30
[2024-11-18 13:18:08,610 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)
[2024-11-18 13:18:08,703 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-18 13:18:08,703 INFO  L93              Difference]: Finished difference Result 26 states and 33 transitions.
[2024-11-18 13:18:08,704 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2024-11-18 13:18:08,704 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
[2024-11-18 13:18:08,704 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-18 13:18:08,705 INFO  L225             Difference]: With dead ends: 26
[2024-11-18 13:18:08,705 INFO  L226             Difference]: Without dead ends: 24
[2024-11-18 13:18:08,705 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
[2024-11-18 13:18:08,706 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
[2024-11-18 13:18:08,707 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]
[2024-11-18 13:18:08,707 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 24 states.
[2024-11-18 13:18:08,714 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24.
[2024-11-18 13:18:08,714 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)
[2024-11-18 13:18:08,715 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 31 transitions.
[2024-11-18 13:18:08,715 INFO  L78                 Accepts]: Start accepts. Automaton has 24 states and 31 transitions. Word has length 8
[2024-11-18 13:18:08,716 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-18 13:18:08,716 INFO  L471      AbstractCegarLoop]: Abstraction has 24 states and 31 transitions.
[2024-11-18 13:18:08,716 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)
[2024-11-18 13:18:08,716 INFO  L276                IsEmpty]: Start isEmpty. Operand 24 states and 31 transitions.
[2024-11-18 13:18:08,716 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 14
[2024-11-18 13:18:08,717 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-18 13:18:08,717 INFO  L215           NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-18 13:18:08,717 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2024-11-18 13:18:08,717 INFO  L396      AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-18 13:18:08,717 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-18 13:18:08,718 INFO  L85        PathProgramCache]: Analyzing trace with hash 1964350918, now seen corresponding path program 1 times
[2024-11-18 13:18:08,718 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-18 13:18:08,718 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [244852132]
[2024-11-18 13:18:08,718 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-18 13:18:08,718 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-18 13:18:08,728 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-18 13:18:08,919 INFO  L134       CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-18 13:18:08,919 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-18 13:18:08,920 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [244852132]
[2024-11-18 13:18:08,920 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [244852132] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-18 13:18:08,920 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-18 13:18:08,920 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2024-11-18 13:18:08,920 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1407359269]
[2024-11-18 13:18:08,921 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-18 13:18:08,921 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2024-11-18 13:18:08,921 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-18 13:18:08,923 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2024-11-18 13:18:08,924 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42
[2024-11-18 13:18:08,924 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)
[2024-11-18 13:18:09,055 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-18 13:18:09,056 INFO  L93              Difference]: Finished difference Result 42 states and 57 transitions.
[2024-11-18 13:18:09,057 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. 
[2024-11-18 13:18:09,057 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
[2024-11-18 13:18:09,058 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-18 13:18:09,060 INFO  L225             Difference]: With dead ends: 42
[2024-11-18 13:18:09,060 INFO  L226             Difference]: Without dead ends: 40
[2024-11-18 13:18:09,061 INFO  L431           NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56
[2024-11-18 13:18:09,062 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
[2024-11-18 13:18:09,065 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]
[2024-11-18 13:18:09,066 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 40 states.
[2024-11-18 13:18:09,079 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 37.
[2024-11-18 13:18:09,080 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)
[2024-11-18 13:18:09,082 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 50 transitions.
[2024-11-18 13:18:09,082 INFO  L78                 Accepts]: Start accepts. Automaton has 37 states and 50 transitions. Word has length 13
[2024-11-18 13:18:09,083 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-18 13:18:09,084 INFO  L471      AbstractCegarLoop]: Abstraction has 37 states and 50 transitions.
[2024-11-18 13:18:09,084 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)
[2024-11-18 13:18:09,084 INFO  L276                IsEmpty]: Start isEmpty. Operand 37 states and 50 transitions.
[2024-11-18 13:18:09,084 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 19
[2024-11-18 13:18:09,085 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-18 13:18:09,085 INFO  L215           NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-18 13:18:09,085 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2024-11-18 13:18:09,085 INFO  L396      AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-18 13:18:09,086 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-18 13:18:09,086 INFO  L85        PathProgramCache]: Analyzing trace with hash -1092746621, now seen corresponding path program 1 times
[2024-11-18 13:18:09,086 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-18 13:18:09,086 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1075719169]
[2024-11-18 13:18:09,086 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-18 13:18:09,087 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-18 13:18:09,103 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-18 13:18:09,264 INFO  L134       CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked.
[2024-11-18 13:18:09,264 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-18 13:18:09,264 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1075719169]
[2024-11-18 13:18:09,265 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1075719169] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-18 13:18:09,265 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-18 13:18:09,265 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2024-11-18 13:18:09,266 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2049109117]
[2024-11-18 13:18:09,266 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-18 13:18:09,266 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2024-11-18 13:18:09,267 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-18 13:18:09,267 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2024-11-18 13:18:09,267 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42
[2024-11-18 13:18:09,267 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)
[2024-11-18 13:18:09,360 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-18 13:18:09,360 INFO  L93              Difference]: Finished difference Result 46 states and 60 transitions.
[2024-11-18 13:18:09,361 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. 
[2024-11-18 13:18:09,361 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
[2024-11-18 13:18:09,361 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-18 13:18:09,362 INFO  L225             Difference]: With dead ends: 46
[2024-11-18 13:18:09,362 INFO  L226             Difference]: Without dead ends: 44
[2024-11-18 13:18:09,363 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
[2024-11-18 13:18:09,364 INFO  L432           NwaCegarLoop]: 22 mSDtfsCounter, 4 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s 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
[2024-11-18 13:18:09,364 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]
[2024-11-18 13:18:09,365 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 44 states.
[2024-11-18 13:18:09,373 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 42.
[2024-11-18 13:18:09,373 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)
[2024-11-18 13:18:09,374 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 55 transitions.
[2024-11-18 13:18:09,375 INFO  L78                 Accepts]: Start accepts. Automaton has 42 states and 55 transitions. Word has length 18
[2024-11-18 13:18:09,375 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-18 13:18:09,375 INFO  L471      AbstractCegarLoop]: Abstraction has 42 states and 55 transitions.
[2024-11-18 13:18:09,375 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)
[2024-11-18 13:18:09,375 INFO  L276                IsEmpty]: Start isEmpty. Operand 42 states and 55 transitions.
[2024-11-18 13:18:09,376 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 24
[2024-11-18 13:18:09,376 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-18 13:18:09,376 INFO  L215           NwaCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-18 13:18:09,376 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3
[2024-11-18 13:18:09,376 INFO  L396      AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-18 13:18:09,377 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-18 13:18:09,377 INFO  L85        PathProgramCache]: Analyzing trace with hash 961880998, now seen corresponding path program 1 times
[2024-11-18 13:18:09,377 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-18 13:18:09,377 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [458753292]
[2024-11-18 13:18:09,377 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-18 13:18:09,377 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-18 13:18:09,385 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-18 13:18:09,457 INFO  L134       CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked.
[2024-11-18 13:18:09,458 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-18 13:18:09,458 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [458753292]
[2024-11-18 13:18:09,458 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [458753292] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-18 13:18:09,458 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-18 13:18:09,458 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2024-11-18 13:18:09,458 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1006850844]
[2024-11-18 13:18:09,459 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-18 13:18:09,459 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2024-11-18 13:18:09,459 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-18 13:18:09,459 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2024-11-18 13:18:09,460 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30
[2024-11-18 13:18:09,460 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)
[2024-11-18 13:18:09,529 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-18 13:18:09,530 INFO  L93              Difference]: Finished difference Result 89 states and 120 transitions.
[2024-11-18 13:18:09,531 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2024-11-18 13:18:09,531 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
[2024-11-18 13:18:09,531 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-18 13:18:09,533 INFO  L225             Difference]: With dead ends: 89
[2024-11-18 13:18:09,534 INFO  L226             Difference]: Without dead ends: 56
[2024-11-18 13:18:09,536 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
[2024-11-18 13:18:09,537 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
[2024-11-18 13:18:09,541 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]
[2024-11-18 13:18:09,542 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 56 states.
[2024-11-18 13:18:09,558 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56.
[2024-11-18 13:18:09,559 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)
[2024-11-18 13:18:09,560 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 76 transitions.
[2024-11-18 13:18:09,564 INFO  L78                 Accepts]: Start accepts. Automaton has 56 states and 76 transitions. Word has length 23
[2024-11-18 13:18:09,564 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-18 13:18:09,564 INFO  L471      AbstractCegarLoop]: Abstraction has 56 states and 76 transitions.
[2024-11-18 13:18:09,565 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)
[2024-11-18 13:18:09,565 INFO  L276                IsEmpty]: Start isEmpty. Operand 56 states and 76 transitions.
[2024-11-18 13:18:09,566 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 45
[2024-11-18 13:18:09,566 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-18 13:18:09,566 INFO  L215           NwaCegarLoop]: trace histogram [8, 7, 7, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1]
[2024-11-18 13:18:09,566 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4
[2024-11-18 13:18:09,566 INFO  L396      AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-18 13:18:09,566 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-18 13:18:09,567 INFO  L85        PathProgramCache]: Analyzing trace with hash 1962382770, now seen corresponding path program 1 times
[2024-11-18 13:18:09,567 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-18 13:18:09,567 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1097110863]
[2024-11-18 13:18:09,567 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-18 13:18:09,567 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-18 13:18:09,580 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-18 13:18:09,660 INFO  L134       CoverageAnalysis]: Checked inductivity of 103 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked.
[2024-11-18 13:18:09,661 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-18 13:18:09,661 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1097110863]
[2024-11-18 13:18:09,661 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1097110863] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-18 13:18:09,661 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-18 13:18:09,662 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2024-11-18 13:18:09,663 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [922209685]
[2024-11-18 13:18:09,663 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-18 13:18:09,663 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2024-11-18 13:18:09,664 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-18 13:18:09,664 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2024-11-18 13:18:09,665 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2024-11-18 13:18:09,665 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)
[2024-11-18 13:18:09,720 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-18 13:18:09,720 INFO  L93              Difference]: Finished difference Result 62 states and 81 transitions.
[2024-11-18 13:18:09,724 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2024-11-18 13:18:09,725 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
[2024-11-18 13:18:09,725 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-18 13:18:09,726 INFO  L225             Difference]: With dead ends: 62
[2024-11-18 13:18:09,726 INFO  L226             Difference]: Without dead ends: 60
[2024-11-18 13:18:09,726 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
[2024-11-18 13:18:09,727 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
[2024-11-18 13:18:09,728 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]
[2024-11-18 13:18:09,730 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 60 states.
[2024-11-18 13:18:09,741 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60.
[2024-11-18 13:18:09,741 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)
[2024-11-18 13:18:09,742 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 79 transitions.
[2024-11-18 13:18:09,742 INFO  L78                 Accepts]: Start accepts. Automaton has 60 states and 79 transitions. Word has length 44
[2024-11-18 13:18:09,743 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-18 13:18:09,743 INFO  L471      AbstractCegarLoop]: Abstraction has 60 states and 79 transitions.
[2024-11-18 13:18:09,743 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)
[2024-11-18 13:18:09,743 INFO  L276                IsEmpty]: Start isEmpty. Operand 60 states and 79 transitions.
[2024-11-18 13:18:09,745 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 79
[2024-11-18 13:18:09,745 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-18 13:18:09,745 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]
[2024-11-18 13:18:09,745 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5
[2024-11-18 13:18:09,745 INFO  L396      AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-18 13:18:09,746 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-18 13:18:09,746 INFO  L85        PathProgramCache]: Analyzing trace with hash -896370565, now seen corresponding path program 1 times
[2024-11-18 13:18:09,746 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-18 13:18:09,746 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [723366751]
[2024-11-18 13:18:09,746 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-18 13:18:09,746 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-18 13:18:09,769 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-18 13:18:10,073 INFO  L134       CoverageAnalysis]: Checked inductivity of 353 backedges. 30 proven. 11 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked.
[2024-11-18 13:18:10,074 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-18 13:18:10,074 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [723366751]
[2024-11-18 13:18:10,074 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [723366751] provided 0 perfect and 1 imperfect interpolant sequences
[2024-11-18 13:18:10,074 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1588140286]
[2024-11-18 13:18:10,074 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-18 13:18:10,075 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-18 13:18:10,075 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2024-11-18 13:18:10,082 INFO  L229       MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-18 13:18:10,087 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process
[2024-11-18 13:18:10,170 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-18 13:18:10,172 INFO  L255         TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 14 conjuncts are in the unsatisfiable core
[2024-11-18 13:18:10,182 INFO  L278         TraceCheckSpWp]: Computing forward predicates...
[2024-11-18 13:18:10,575 INFO  L134       CoverageAnalysis]: Checked inductivity of 353 backedges. 33 proven. 8 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked.
[2024-11-18 13:18:10,576 INFO  L311         TraceCheckSpWp]: Computing backward predicates...
[2024-11-18 13:18:11,018 INFO  L134       CoverageAnalysis]: Checked inductivity of 353 backedges. 34 proven. 7 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked.
[2024-11-18 13:18:11,018 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1588140286] provided 0 perfect and 2 imperfect interpolant sequences
[2024-11-18 13:18:11,018 INFO  L185   FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2024-11-18 13:18:11,019 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 12, 11] total 24
[2024-11-18 13:18:11,019 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [72233686]
[2024-11-18 13:18:11,019 INFO  L85    oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2024-11-18 13:18:11,020 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 24 states
[2024-11-18 13:18:11,020 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-18 13:18:11,020 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants.
[2024-11-18 13:18:11,021 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=142, Invalid=410, Unknown=0, NotChecked=0, Total=552
[2024-11-18 13:18:11,021 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)
[2024-11-18 13:18:11,354 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-18 13:18:11,354 INFO  L93              Difference]: Finished difference Result 80 states and 106 transitions.
[2024-11-18 13:18:11,355 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. 
[2024-11-18 13:18:11,355 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
[2024-11-18 13:18:11,355 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-18 13:18:11,357 INFO  L225             Difference]: With dead ends: 80
[2024-11-18 13:18:11,357 INFO  L226             Difference]: Without dead ends: 78
[2024-11-18 13:18:11,357 INFO  L431           NwaCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 138 SyntacticMatches, 5 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 296 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=187, Invalid=569, Unknown=0, NotChecked=0, Total=756
[2024-11-18 13:18:11,358 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, 0.3s IncrementalHoareTripleChecker+Time
[2024-11-18 13:18:11,358 INFO  L433           NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 462 Invalid, 412 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 397 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time]
[2024-11-18 13:18:11,359 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 78 states.
[2024-11-18 13:18:11,369 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 68.
[2024-11-18 13:18:11,369 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)
[2024-11-18 13:18:11,370 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 85 transitions.
[2024-11-18 13:18:11,370 INFO  L78                 Accepts]: Start accepts. Automaton has 68 states and 85 transitions. Word has length 78
[2024-11-18 13:18:11,371 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-18 13:18:11,371 INFO  L471      AbstractCegarLoop]: Abstraction has 68 states and 85 transitions.
[2024-11-18 13:18:11,371 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)
[2024-11-18 13:18:11,371 INFO  L276                IsEmpty]: Start isEmpty. Operand 68 states and 85 transitions.
[2024-11-18 13:18:11,373 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 84
[2024-11-18 13:18:11,373 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-18 13:18:11,373 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]
[2024-11-18 13:18:11,391 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0
[2024-11-18 13:18:11,574 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
[2024-11-18 13:18:11,574 INFO  L396      AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-18 13:18:11,575 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-18 13:18:11,575 INFO  L85        PathProgramCache]: Analyzing trace with hash -1405710098, now seen corresponding path program 2 times
[2024-11-18 13:18:11,575 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-18 13:18:11,575 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2062471948]
[2024-11-18 13:18:11,575 INFO  L93    rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
[2024-11-18 13:18:11,576 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-18 13:18:11,591 INFO  L227   tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2024-11-18 13:18:11,591 INFO  L228   tOrderPrioritization]: Conjunction of SSA is unsat
[2024-11-18 13:18:11,715 INFO  L134       CoverageAnalysis]: Checked inductivity of 409 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 372 trivial. 0 not checked.
[2024-11-18 13:18:11,715 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-18 13:18:11,715 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2062471948]
[2024-11-18 13:18:11,716 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2062471948] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-18 13:18:11,716 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-18 13:18:11,716 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2024-11-18 13:18:11,716 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1015771143]
[2024-11-18 13:18:11,716 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-18 13:18:11,716 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2024-11-18 13:18:11,716 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-18 13:18:11,717 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2024-11-18 13:18:11,717 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30
[2024-11-18 13:18:11,717 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)
[2024-11-18 13:18:11,778 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-18 13:18:11,778 INFO  L93              Difference]: Finished difference Result 68 states and 85 transitions.
[2024-11-18 13:18:11,779 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2024-11-18 13:18:11,780 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
[2024-11-18 13:18:11,781 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-18 13:18:11,782 INFO  L225             Difference]: With dead ends: 68
[2024-11-18 13:18:11,782 INFO  L226             Difference]: Without dead ends: 0
[2024-11-18 13:18:11,783 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
[2024-11-18 13:18:11,784 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, 0.0s IncrementalHoareTripleChecker+Time
[2024-11-18 13:18:11,784 INFO  L433           NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 77 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2024-11-18 13:18:11,785 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 0 states.
[2024-11-18 13:18:11,785 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0.
[2024-11-18 13:18:11,787 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)
[2024-11-18 13:18:11,787 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions.
[2024-11-18 13:18:11,787 INFO  L78                 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 83
[2024-11-18 13:18:11,788 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-18 13:18:11,788 INFO  L471      AbstractCegarLoop]: Abstraction has 0 states and 0 transitions.
[2024-11-18 13:18:11,788 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)
[2024-11-18 13:18:11,788 INFO  L276                IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions.
[2024-11-18 13:18:11,788 INFO  L282                IsEmpty]: Finished isEmpty. No accepting run.
[2024-11-18 13:18:11,791 INFO  L782   garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining)
[2024-11-18 13:18:11,791 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7
[2024-11-18 13:18:11,806 INFO  L407         BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1]
[2024-11-18 13:18:11,809 INFO  L343    DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions.
[2024-11-18 13:18:12,218 INFO  L170   ceAbstractionStarter]: Computing trace abstraction results
[2024-11-18 13:18:12,244 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.11 01:18:12 BoogieIcfgContainer
[2024-11-18 13:18:12,244 INFO  L131        PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2024-11-18 13:18:12,245 INFO  L112        PluginConnector]: ------------------------Witness Printer----------------------------
[2024-11-18 13:18:12,245 INFO  L270        PluginConnector]: Initializing Witness Printer...
[2024-11-18 13:18:12,246 INFO  L274        PluginConnector]: Witness Printer initialized
[2024-11-18 13:18:12,246 INFO  L184        PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 01:18:08" (3/4) ...
[2024-11-18 13:18:12,250 INFO  L142         WitnessPrinter]: Generating witness for correct program
[2024-11-18 13:18:12,253 INFO  L361     RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert
[2024-11-18 13:18:12,258 INFO  L925   BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges
[2024-11-18 13:18:12,258 INFO  L925   BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges
[2024-11-18 13:18:12,258 INFO  L925   BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges
[2024-11-18 13:18:12,258 INFO  L925   BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges
[2024-11-18 13:18:12,350 INFO  L149         WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml
[2024-11-18 13:18:12,350 INFO  L149         WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml
[2024-11-18 13:18:12,350 INFO  L131        PluginConnector]: ------------------------ END Witness Printer----------------------------
[2024-11-18 13:18:12,351 INFO  L158              Benchmark]: Toolchain (without parser) took 4987.33ms. Allocated memory was 151.0MB in the beginning and 201.3MB in the end (delta: 50.3MB). Free memory was 82.1MB in the beginning and 131.7MB in the end (delta: -49.6MB). Peak memory consumption was 3.8MB. Max. memory is 16.1GB.
[2024-11-18 13:18:12,351 INFO  L158              Benchmark]: CDTParser took 0.19ms. Allocated memory is still 151.0MB. Free memory is still 106.4MB. There was no memory consumed. Max. memory is 16.1GB.
[2024-11-18 13:18:12,351 INFO  L158              Benchmark]: CACSL2BoogieTranslator took 334.36ms. Allocated memory is still 151.0MB. Free memory was 81.9MB in the beginning and 121.7MB in the end (delta: -39.8MB). Peak memory consumption was 16.4MB. Max. memory is 16.1GB.
[2024-11-18 13:18:12,351 INFO  L158              Benchmark]: Boogie Procedure Inliner took 54.06ms. Allocated memory is still 151.0MB. Free memory was 121.7MB in the beginning and 120.3MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB.
[2024-11-18 13:18:12,352 INFO  L158              Benchmark]: Boogie Preprocessor took 40.12ms. Allocated memory is still 151.0MB. Free memory was 120.3MB in the beginning and 118.5MB in the end (delta: 1.8MB). There was no memory consumed. Max. memory is 16.1GB.
[2024-11-18 13:18:12,352 INFO  L158              Benchmark]: RCFGBuilder took 243.55ms. Allocated memory is still 151.0MB. Free memory was 118.5MB in the beginning and 108.0MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB.
[2024-11-18 13:18:12,352 INFO  L158              Benchmark]: TraceAbstraction took 4203.11ms. Allocated memory was 151.0MB in the beginning and 201.3MB in the end (delta: 50.3MB). Free memory was 107.5MB in the beginning and 135.9MB in the end (delta: -28.3MB). Peak memory consumption was 95.1MB. Max. memory is 16.1GB.
[2024-11-18 13:18:12,352 INFO  L158              Benchmark]: Witness Printer took 105.37ms. Allocated memory is still 201.3MB. Free memory was 135.9MB in the beginning and 131.7MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB.
[2024-11-18 13:18:12,358 INFO  L338   ainManager$Toolchain]: #######################  End [Toolchain 1] #######################
 --- Results ---
 * Results from de.uni_freiburg.informatik.ultimate.core:
  - StatisticsResult: Toolchain Benchmarks
    Benchmark results are:
 * CDTParser took 0.19ms. Allocated memory is still 151.0MB. Free memory is still 106.4MB. There was no memory consumed. Max. memory is 16.1GB.
 * CACSL2BoogieTranslator took 334.36ms. Allocated memory is still 151.0MB. Free memory was 81.9MB in the beginning and 121.7MB in the end (delta: -39.8MB). Peak memory consumption was 16.4MB. Max. memory is 16.1GB.
 * Boogie Procedure Inliner took 54.06ms. Allocated memory is still 151.0MB. Free memory was 121.7MB in the beginning and 120.3MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB.
 * Boogie Preprocessor took 40.12ms. Allocated memory is still 151.0MB. Free memory was 120.3MB in the beginning and 118.5MB in the end (delta: 1.8MB). There was no memory consumed. Max. memory is 16.1GB.
 * RCFGBuilder took 243.55ms. Allocated memory is still 151.0MB. Free memory was 118.5MB in the beginning and 108.0MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB.
 * TraceAbstraction took 4203.11ms. Allocated memory was 151.0MB in the beginning and 201.3MB in the end (delta: 50.3MB). Free memory was 107.5MB in the beginning and 135.9MB in the end (delta: -28.3MB). Peak memory consumption was 95.1MB. Max. memory is 16.1GB.
 * Witness Printer took 105.37ms. Allocated memory is still 201.3MB. Free memory was 135.9MB in the beginning and 131.7MB 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: 1.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 63 SdHoareTripleChecker+Valid, 0.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 27 mSDsluCounter, 1026 SdHoareTripleChecker+Invalid, 0.5s 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, 0.6s 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: 0.1s AutomataMinimizationTime, 8 MinimizatonAttempts, 15 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 2.0s 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!
[2024-11-18 13:18:12,388 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0
Received shutdown request...
--- End real Ultimate output ---

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