./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/nla-digbench/dijkstra-u.c --full-output --architecture 32bit


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


Checking for ERROR reachability
Using default analysis
Version c7c6ca5d
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/nla-digbench/dijkstra-u.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) )

 --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash b586a178399b4c0df2fdcb66faa06566663e0a18b90a5f0ce0551810014ff769
--- Real Ultimate output ---
This is Ultimate 0.2.5-?-c7c6ca5-m
[2024-11-08 14:16:02,675 INFO  L188        SettingsManager]: Resetting all preferences to default values...
[2024-11-08 14:16:02,760 INFO  L114        SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf
[2024-11-08 14:16:02,764 WARN  L101        SettingsManager]: Preference file contains the following unknown settings:
[2024-11-08 14:16:02,768 WARN  L103        SettingsManager]:   * de.uni_freiburg.informatik.ultimate.core.Log level for class
[2024-11-08 14:16:02,795 INFO  L130        SettingsManager]: Preferences different from defaults after loading the file:
[2024-11-08 14:16:02,796 INFO  L151        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2024-11-08 14:16:02,796 INFO  L153        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2024-11-08 14:16:02,797 INFO  L151        SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults:
[2024-11-08 14:16:02,797 INFO  L153        SettingsManager]:  * Use memory slicer=true
[2024-11-08 14:16:02,797 INFO  L151        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2024-11-08 14:16:02,797 INFO  L153        SettingsManager]:  * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2024-11-08 14:16:02,798 INFO  L151        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2024-11-08 14:16:02,798 INFO  L153        SettingsManager]:  * Create parallel compositions if possible=false
[2024-11-08 14:16:02,799 INFO  L153        SettingsManager]:  * Use SBE=true
[2024-11-08 14:16:02,799 INFO  L151        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2024-11-08 14:16:02,801 INFO  L153        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2024-11-08 14:16:02,801 INFO  L153        SettingsManager]:  * sizeof long=4
[2024-11-08 14:16:02,801 INFO  L153        SettingsManager]:  * Overapproximate operations on floating types=true
[2024-11-08 14:16:02,802 INFO  L153        SettingsManager]:  * sizeof POINTER=4
[2024-11-08 14:16:02,802 INFO  L153        SettingsManager]:  * Check division by zero=IGNORE
[2024-11-08 14:16:02,802 INFO  L153        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2024-11-08 14:16:02,802 INFO  L153        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2024-11-08 14:16:02,803 INFO  L153        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2024-11-08 14:16:02,803 INFO  L153        SettingsManager]:  * Allow undefined functions=false
[2024-11-08 14:16:02,803 INFO  L153        SettingsManager]:  * sizeof long double=12
[2024-11-08 14:16:02,803 INFO  L153        SettingsManager]:  * Check if freed pointer was valid=false
[2024-11-08 14:16:02,804 INFO  L153        SettingsManager]:  * Use constant arrays=true
[2024-11-08 14:16:02,804 INFO  L151        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2024-11-08 14:16:02,805 INFO  L153        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2024-11-08 14:16:02,806 INFO  L153        SettingsManager]:  * Only consider context switches at boundaries of atomic blocks=true
[2024-11-08 14:16:02,807 INFO  L153        SettingsManager]:  * SMT solver=External_DefaultMode
[2024-11-08 14:16:02,807 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2024-11-08 14:16:02,807 INFO  L151        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2024-11-08 14:16:02,807 INFO  L153        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2024-11-08 14:16:02,807 INFO  L153        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopHeads
[2024-11-08 14:16:02,808 INFO  L153        SettingsManager]:  * Trace refinement strategy=CAMEL
[2024-11-08 14:16:02,808 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2024-11-08 14:16:02,808 INFO  L153        SettingsManager]:  * Apply one-shot large block encoding in concurrent analysis=false
[2024-11-08 14:16:02,808 INFO  L153        SettingsManager]:  * Automaton type used in concurrency analysis=PETRI_NET
[2024-11-08 14:16:02,808 INFO  L153        SettingsManager]:  * Order on configurations for Petri net unfoldings=DBO
[2024-11-08 14:16:02,809 INFO  L153        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2024-11-08 14:16:02,809 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 -> b586a178399b4c0df2fdcb66faa06566663e0a18b90a5f0ce0551810014ff769
[2024-11-08 14:16:03,098 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2024-11-08 14:16:03,125 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2024-11-08 14:16:03,127 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2024-11-08 14:16:03,129 INFO  L270        PluginConnector]: Initializing CDTParser...
[2024-11-08 14:16:03,129 INFO  L274        PluginConnector]: CDTParser initialized
[2024-11-08 14:16:03,130 INFO  L431   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench/dijkstra-u.c
[2024-11-08 14:16:04,528 INFO  L533              CDTParser]: Created temporary CDT project at NULL
[2024-11-08 14:16:04,725 INFO  L384              CDTParser]: Found 1 translation units.
[2024-11-08 14:16:04,726 INFO  L180              CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench/dijkstra-u.c
[2024-11-08 14:16:04,736 INFO  L427              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2539f3beb/8ea973b9721e46a59f1c7588ebacb197/FLAG1e6931922
[2024-11-08 14:16:04,754 INFO  L435              CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2539f3beb/8ea973b9721e46a59f1c7588ebacb197
[2024-11-08 14:16:04,757 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2024-11-08 14:16:04,759 INFO  L133        ToolchainWalker]: Walking toolchain with 6 elements.
[2024-11-08 14:16:04,761 INFO  L112        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2024-11-08 14:16:04,761 INFO  L270        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2024-11-08 14:16:04,766 INFO  L274        PluginConnector]: CACSL2BoogieTranslator initialized
[2024-11-08 14:16:04,767 INFO  L184        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 02:16:04" (1/1) ...
[2024-11-08 14:16:04,769 INFO  L204        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@34efc7f8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 02:16:04, skipping insertion in model container
[2024-11-08 14:16:04,770 INFO  L184        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 02:16:04" (1/1) ...
[2024-11-08 14:16:04,789 INFO  L175         MainTranslator]: Built tables and reachable declarations
[2024-11-08 14:16:04,962 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/nla-digbench/dijkstra-u.c[525,538]
[2024-11-08 14:16:05,003 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2024-11-08 14:16:05,019 INFO  L200         MainTranslator]: Completed pre-run
[2024-11-08 14:16:05,030 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/nla-digbench/dijkstra-u.c[525,538]
[2024-11-08 14:16:05,047 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2024-11-08 14:16:05,077 INFO  L204         MainTranslator]: Completed translation
[2024-11-08 14:16:05,078 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 02:16:05 WrapperNode
[2024-11-08 14:16:05,078 INFO  L131        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2024-11-08 14:16:05,079 INFO  L112        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2024-11-08 14:16:05,080 INFO  L270        PluginConnector]: Initializing Boogie Procedure Inliner...
[2024-11-08 14:16:05,080 INFO  L274        PluginConnector]: Boogie Procedure Inliner initialized
[2024-11-08 14:16:05,086 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 02:16:05" (1/1) ...
[2024-11-08 14:16:05,097 INFO  L184        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 02:16:05" (1/1) ...
[2024-11-08 14:16:05,125 INFO  L138                Inliner]: procedures = 14, calls = 17, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 55
[2024-11-08 14:16:05,126 INFO  L131        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2024-11-08 14:16:05,126 INFO  L112        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2024-11-08 14:16:05,126 INFO  L270        PluginConnector]: Initializing Boogie Preprocessor...
[2024-11-08 14:16:05,127 INFO  L274        PluginConnector]: Boogie Preprocessor initialized
[2024-11-08 14:16:05,137 INFO  L184        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 02:16:05" (1/1) ...
[2024-11-08 14:16:05,138 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 02:16:05" (1/1) ...
[2024-11-08 14:16:05,139 INFO  L184        PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 02:16:05" (1/1) ...
[2024-11-08 14:16:05,159 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].
[2024-11-08 14:16:05,163 INFO  L184        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 02:16:05" (1/1) ...
[2024-11-08 14:16:05,163 INFO  L184        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 02:16:05" (1/1) ...
[2024-11-08 14:16:05,169 INFO  L184        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 02:16:05" (1/1) ...
[2024-11-08 14:16:05,172 INFO  L184        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 02:16:05" (1/1) ...
[2024-11-08 14:16:05,179 INFO  L184        PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 02:16:05" (1/1) ...
[2024-11-08 14:16:05,180 INFO  L184        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 02:16:05" (1/1) ...
[2024-11-08 14:16:05,183 INFO  L131        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2024-11-08 14:16:05,187 INFO  L112        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2024-11-08 14:16:05,187 INFO  L270        PluginConnector]: Initializing RCFGBuilder...
[2024-11-08 14:16:05,187 INFO  L274        PluginConnector]: RCFGBuilder initialized
[2024-11-08 14:16:05,189 INFO  L184        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 02:16:05" (1/1) ...
[2024-11-08 14:16:05,194 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2024-11-08 14:16:05,204 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2024-11-08 14:16:05,222 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)
[2024-11-08 14:16:05,228 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
[2024-11-08 14:16:05,270 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2024-11-08 14:16:05,271 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int#0
[2024-11-08 14:16:05,272 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2024-11-08 14:16:05,272 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2024-11-08 14:16:05,272 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_assert
[2024-11-08 14:16:05,272 INFO  L138     BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert
[2024-11-08 14:16:05,335 INFO  L238             CfgBuilder]: Building ICFG
[2024-11-08 14:16:05,339 INFO  L264             CfgBuilder]: Building CFG for each procedure with an implementation
[2024-11-08 14:16:05,569 INFO  L?                        ?]: Removed 7 outVars from TransFormulas that were not future-live.
[2024-11-08 14:16:05,569 INFO  L287             CfgBuilder]: Performing block encoding
[2024-11-08 14:16:05,581 INFO  L311             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2024-11-08 14:16:05,581 INFO  L316             CfgBuilder]: Removed 2 assume(true) statements.
[2024-11-08 14:16:05,582 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 02:16:05 BoogieIcfgContainer
[2024-11-08 14:16:05,582 INFO  L131        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2024-11-08 14:16:05,584 INFO  L112        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2024-11-08 14:16:05,584 INFO  L270        PluginConnector]: Initializing TraceAbstraction...
[2024-11-08 14:16:05,587 INFO  L274        PluginConnector]: TraceAbstraction initialized
[2024-11-08 14:16:05,587 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.11 02:16:04" (1/3) ...
[2024-11-08 14:16:05,589 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a31a38a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 02:16:05, skipping insertion in model container
[2024-11-08 14:16:05,589 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 02:16:05" (2/3) ...
[2024-11-08 14:16:05,590 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a31a38a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 02:16:05, skipping insertion in model container
[2024-11-08 14:16:05,591 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 02:16:05" (3/3) ...
[2024-11-08 14:16:05,592 INFO  L112   eAbstractionObserver]: Analyzing ICFG dijkstra-u.c
[2024-11-08 14:16:05,610 INFO  L214   ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2024-11-08 14:16:05,611 INFO  L154   ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2024-11-08 14:16:05,668 INFO  L332      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2024-11-08 14:16:05,674 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;@5f5a0e55, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2024-11-08 14:16:05,674 INFO  L334      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2024-11-08 14:16:05,678 INFO  L276                IsEmpty]: Start isEmpty. Operand  has 28 states, 16 states have (on average 1.625) internal successors, (26), 17 states have internal predecessors, (26), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9)
[2024-11-08 14:16:05,685 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 11
[2024-11-08 14:16:05,685 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-08 14:16:05,686 INFO  L215           NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-08 14:16:05,687 INFO  L396      AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-08 14:16:05,690 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-08 14:16:05,691 INFO  L85        PathProgramCache]: Analyzing trace with hash -1104964382, now seen corresponding path program 1 times
[2024-11-08 14:16:05,697 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-08 14:16:05,697 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1650462980]
[2024-11-08 14:16:05,698 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-08 14:16:05,699 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-08 14:16:05,779 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 14:16:05,831 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-08 14:16:05,832 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-08 14:16:05,833 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1650462980]
[2024-11-08 14:16:05,833 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1650462980] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-08 14:16:05,834 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-08 14:16:05,834 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2024-11-08 14:16:05,835 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1311046692]
[2024-11-08 14:16:05,836 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-08 14:16:05,839 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 2 states
[2024-11-08 14:16:05,840 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-08 14:16:05,855 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants.
[2024-11-08 14:16:05,856 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2024-11-08 14:16:05,857 INFO  L87              Difference]: Start difference. First operand  has 28 states, 16 states have (on average 1.625) internal successors, (26), 17 states have internal predecessors, (26), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) Second operand  has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 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)
[2024-11-08 14:16:05,875 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-08 14:16:05,877 INFO  L93              Difference]: Finished difference Result 53 states and 93 transitions.
[2024-11-08 14:16:05,878 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. 
[2024-11-08 14:16:05,879 INFO  L78                 Accepts]: Start accepts. Automaton has  has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 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 10
[2024-11-08 14:16:05,880 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-08 14:16:05,887 INFO  L225             Difference]: With dead ends: 53
[2024-11-08 14:16:05,887 INFO  L226             Difference]: Without dead ends: 24
[2024-11-08 14:16:05,890 INFO  L431           NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2024-11-08 14:16:05,893 INFO  L432           NwaCegarLoop]: 38 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2024-11-08 14:16:05,893 INFO  L433           NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2024-11-08 14:16:05,907 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 24 states.
[2024-11-08 14:16:05,920 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24.
[2024-11-08 14:16:05,921 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 24 states, 13 states have (on average 1.3076923076923077) internal successors, (17), 14 states have internal predecessors, (17), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8)
[2024-11-08 14:16:05,922 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 34 transitions.
[2024-11-08 14:16:05,924 INFO  L78                 Accepts]: Start accepts. Automaton has 24 states and 34 transitions. Word has length 10
[2024-11-08 14:16:05,924 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-08 14:16:05,924 INFO  L471      AbstractCegarLoop]: Abstraction has 24 states and 34 transitions.
[2024-11-08 14:16:05,924 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 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)
[2024-11-08 14:16:05,924 INFO  L276                IsEmpty]: Start isEmpty. Operand 24 states and 34 transitions.
[2024-11-08 14:16:05,924 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 12
[2024-11-08 14:16:05,925 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-08 14:16:05,925 INFO  L215           NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-08 14:16:05,925 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2024-11-08 14:16:05,925 INFO  L396      AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-08 14:16:05,926 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-08 14:16:05,926 INFO  L85        PathProgramCache]: Analyzing trace with hash -2095754447, now seen corresponding path program 1 times
[2024-11-08 14:16:05,926 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-08 14:16:05,926 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [800277501]
[2024-11-08 14:16:05,926 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-08 14:16:05,926 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-08 14:16:05,964 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 14:16:06,387 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-08 14:16:06,388 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-08 14:16:06,388 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [800277501]
[2024-11-08 14:16:06,388 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [800277501] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-08 14:16:06,388 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-08 14:16:06,388 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2024-11-08 14:16:06,389 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [199472047]
[2024-11-08 14:16:06,389 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-08 14:16:06,390 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2024-11-08 14:16:06,393 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-08 14:16:06,394 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2024-11-08 14:16:06,394 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30
[2024-11-08 14:16:06,395 INFO  L87              Difference]: Start difference. First operand 24 states and 34 transitions. Second operand  has 6 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 5 states have internal predecessors, (10), 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)
[2024-11-08 14:16:10,526 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers []
[2024-11-08 14:16:10,594 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-08 14:16:10,594 INFO  L93              Difference]: Finished difference Result 56 states and 83 transitions.
[2024-11-08 14:16:10,595 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2024-11-08 14:16:10,595 INFO  L78                 Accepts]: Start accepts. Automaton has  has 6 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 5 states have internal predecessors, (10), 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 11
[2024-11-08 14:16:10,595 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-08 14:16:10,596 INFO  L225             Difference]: With dead ends: 56
[2024-11-08 14:16:10,596 INFO  L226             Difference]: Without dead ends: 38
[2024-11-08 14:16:10,597 INFO  L431           NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56
[2024-11-08 14:16:10,598 INFO  L432           NwaCegarLoop]: 32 mSDtfsCounter, 5 mSDsluCounter, 105 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 13 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 137 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time
[2024-11-08 14:16:10,599 INFO  L433           NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 137 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 47 Invalid, 1 Unknown, 0 Unchecked, 4.1s Time]
[2024-11-08 14:16:10,599 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 38 states.
[2024-11-08 14:16:10,611 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38.
[2024-11-08 14:16:10,612 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 38 states, 20 states have (on average 1.25) internal successors, (25), 21 states have internal predecessors, (25), 15 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14)
[2024-11-08 14:16:10,613 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 54 transitions.
[2024-11-08 14:16:10,614 INFO  L78                 Accepts]: Start accepts. Automaton has 38 states and 54 transitions. Word has length 11
[2024-11-08 14:16:10,614 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-08 14:16:10,614 INFO  L471      AbstractCegarLoop]: Abstraction has 38 states and 54 transitions.
[2024-11-08 14:16:10,614 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 6 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 5 states have internal predecessors, (10), 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)
[2024-11-08 14:16:10,615 INFO  L276                IsEmpty]: Start isEmpty. Operand 38 states and 54 transitions.
[2024-11-08 14:16:10,615 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 14
[2024-11-08 14:16:10,615 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-08 14:16:10,615 INFO  L215           NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-08 14:16:10,616 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2024-11-08 14:16:10,616 INFO  L396      AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-08 14:16:10,616 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-08 14:16:10,623 INFO  L85        PathProgramCache]: Analyzing trace with hash 975763084, now seen corresponding path program 1 times
[2024-11-08 14:16:10,623 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-08 14:16:10,624 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [77428502]
[2024-11-08 14:16:10,624 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-08 14:16:10,624 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-08 14:16:10,654 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 14:16:11,026 INFO  L134       CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-08 14:16:11,026 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-08 14:16:11,027 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [77428502]
[2024-11-08 14:16:11,027 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [77428502] provided 0 perfect and 1 imperfect interpolant sequences
[2024-11-08 14:16:11,027 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1752061208]
[2024-11-08 14:16:11,029 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-08 14:16:11,029 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 14:16:11,029 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2024-11-08 14:16:11,031 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)
[2024-11-08 14:16:11,034 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process
[2024-11-08 14:16:11,088 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 14:16:11,090 INFO  L255         TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 12 conjuncts are in the unsatisfiable core
[2024-11-08 14:16:11,095 INFO  L278         TraceCheckSpWp]: Computing forward predicates...
[2024-11-08 14:16:11,272 INFO  L134       CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-08 14:16:11,273 INFO  L311         TraceCheckSpWp]: Computing backward predicates...
[2024-11-08 14:16:11,459 INFO  L134       CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-08 14:16:11,460 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1752061208] provided 0 perfect and 2 imperfect interpolant sequences
[2024-11-08 14:16:11,462 INFO  L185   FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2024-11-08 14:16:11,462 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15
[2024-11-08 14:16:11,462 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1766431061]
[2024-11-08 14:16:11,462 INFO  L85    oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2024-11-08 14:16:11,463 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 15 states
[2024-11-08 14:16:11,463 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-08 14:16:11,463 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants.
[2024-11-08 14:16:11,464 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210
[2024-11-08 14:16:11,464 INFO  L87              Difference]: Start difference. First operand 38 states and 54 transitions. Second operand  has 15 states, 15 states have (on average 1.7333333333333334) internal successors, (26), 13 states have internal predecessors, (26), 3 states have call successors, (3), 2 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-08 14:16:16,192 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers []
[2024-11-08 14:16:20,202 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers []
[2024-11-08 14:16:24,256 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers []
[2024-11-08 14:16:28,426 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers []
[2024-11-08 14:16:28,682 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-08 14:16:28,682 INFO  L93              Difference]: Finished difference Result 107 states and 172 transitions.
[2024-11-08 14:16:28,683 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. 
[2024-11-08 14:16:28,683 INFO  L78                 Accepts]: Start accepts. Automaton has  has 15 states, 15 states have (on average 1.7333333333333334) internal successors, (26), 13 states have internal predecessors, (26), 3 states have call successors, (3), 2 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13
[2024-11-08 14:16:28,683 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-08 14:16:28,685 INFO  L225             Difference]: With dead ends: 107
[2024-11-08 14:16:28,685 INFO  L226             Difference]: Without dead ends: 89
[2024-11-08 14:16:28,688 INFO  L431           NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 17 SyntacticMatches, 2 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=93, Invalid=287, Unknown=0, NotChecked=0, Total=380
[2024-11-08 14:16:28,690 INFO  L432           NwaCegarLoop]: 30 mSDtfsCounter, 27 mSDsluCounter, 176 mSDsCounter, 0 mSdLazyCounter, 196 mSolverCounterSat, 104 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 206 SdHoareTripleChecker+Invalid, 304 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 104 IncrementalHoareTripleChecker+Valid, 196 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.0s IncrementalHoareTripleChecker+Time
[2024-11-08 14:16:28,691 INFO  L433           NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 206 Invalid, 304 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [104 Valid, 196 Invalid, 4 Unknown, 0 Unchecked, 17.0s Time]
[2024-11-08 14:16:28,692 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 89 states.
[2024-11-08 14:16:28,716 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 57.
[2024-11-08 14:16:28,717 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 57 states, 30 states have (on average 1.2333333333333334) internal successors, (37), 33 states have internal predecessors, (37), 23 states have call successors, (23), 3 states have call predecessors, (23), 3 states have return successors, (22), 20 states have call predecessors, (22), 22 states have call successors, (22)
[2024-11-08 14:16:28,719 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 82 transitions.
[2024-11-08 14:16:28,720 INFO  L78                 Accepts]: Start accepts. Automaton has 57 states and 82 transitions. Word has length 13
[2024-11-08 14:16:28,720 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-08 14:16:28,720 INFO  L471      AbstractCegarLoop]: Abstraction has 57 states and 82 transitions.
[2024-11-08 14:16:28,721 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 15 states, 15 states have (on average 1.7333333333333334) internal successors, (26), 13 states have internal predecessors, (26), 3 states have call successors, (3), 2 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-08 14:16:28,721 INFO  L276                IsEmpty]: Start isEmpty. Operand 57 states and 82 transitions.
[2024-11-08 14:16:28,722 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 22
[2024-11-08 14:16:28,722 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-08 14:16:28,722 INFO  L215           NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-08 14:16:28,741 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0
[2024-11-08 14:16:28,926 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 14:16:28,927 INFO  L396      AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-08 14:16:28,927 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-08 14:16:28,927 INFO  L85        PathProgramCache]: Analyzing trace with hash 1299424529, now seen corresponding path program 1 times
[2024-11-08 14:16:28,928 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-08 14:16:28,928 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [592265737]
[2024-11-08 14:16:28,928 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-08 14:16:28,928 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-08 14:16:28,958 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unknown
[2024-11-08 14:16:28,961 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1456849366]
[2024-11-08 14:16:28,961 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-08 14:16:28,961 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 14:16:28,962 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2024-11-08 14:16:28,963 INFO  L229       MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-08 14:16:28,965 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process
[2024-11-08 14:16:29,011 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 14:16:29,012 INFO  L255         TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 7 conjuncts are in the unsatisfiable core
[2024-11-08 14:16:29,015 INFO  L278         TraceCheckSpWp]: Computing forward predicates...
[2024-11-08 14:16:29,088 INFO  L134       CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked.
[2024-11-08 14:16:29,089 INFO  L307         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2024-11-08 14:16:29,089 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-08 14:16:29,089 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [592265737]
[2024-11-08 14:16:29,090 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2024-11-08 14:16:29,091 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1456849366]
[2024-11-08 14:16:29,091 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1456849366] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-08 14:16:29,091 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-08 14:16:29,091 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2024-11-08 14:16:29,092 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1240420509]
[2024-11-08 14:16:29,092 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-08 14:16:29,092 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2024-11-08 14:16:29,092 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-08 14:16:29,093 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2024-11-08 14:16:29,094 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2024-11-08 14:16:29,094 INFO  L87              Difference]: Start difference. First operand 57 states and 82 transitions. Second operand  has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 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)
[2024-11-08 14:16:29,211 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-08 14:16:29,211 INFO  L93              Difference]: Finished difference Result 82 states and 118 transitions.
[2024-11-08 14:16:29,212 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2024-11-08 14:16:29,212 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 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 21
[2024-11-08 14:16:29,213 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-08 14:16:29,214 INFO  L225             Difference]: With dead ends: 82
[2024-11-08 14:16:29,214 INFO  L226             Difference]: Without dead ends: 79
[2024-11-08 14:16:29,214 INFO  L431           NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30
[2024-11-08 14:16:29,215 INFO  L432           NwaCegarLoop]: 31 mSDtfsCounter, 5 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 106 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2024-11-08 14:16:29,215 INFO  L433           NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 106 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2024-11-08 14:16:29,216 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 79 states.
[2024-11-08 14:16:29,236 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 79.
[2024-11-08 14:16:29,236 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 79 states, 38 states have (on average 1.2105263157894737) internal successors, (46), 40 states have internal predecessors, (46), 35 states have call successors, (35), 5 states have call predecessors, (35), 5 states have return successors, (33), 33 states have call predecessors, (33), 33 states have call successors, (33)
[2024-11-08 14:16:29,239 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 114 transitions.
[2024-11-08 14:16:29,240 INFO  L78                 Accepts]: Start accepts. Automaton has 79 states and 114 transitions. Word has length 21
[2024-11-08 14:16:29,240 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-08 14:16:29,241 INFO  L471      AbstractCegarLoop]: Abstraction has 79 states and 114 transitions.
[2024-11-08 14:16:29,241 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 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)
[2024-11-08 14:16:29,242 INFO  L276                IsEmpty]: Start isEmpty. Operand 79 states and 114 transitions.
[2024-11-08 14:16:29,242 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 21
[2024-11-08 14:16:29,242 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-08 14:16:29,243 INFO  L215           NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-08 14:16:29,261 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0
[2024-11-08 14:16:29,447 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3
[2024-11-08 14:16:29,448 INFO  L396      AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-08 14:16:29,448 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-08 14:16:29,449 INFO  L85        PathProgramCache]: Analyzing trace with hash -1253152616, now seen corresponding path program 1 times
[2024-11-08 14:16:29,449 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-08 14:16:29,449 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1854383983]
[2024-11-08 14:16:29,449 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-08 14:16:29,449 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-08 14:16:29,478 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unknown
[2024-11-08 14:16:29,478 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [725975521]
[2024-11-08 14:16:29,478 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-08 14:16:29,479 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 14:16:29,479 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2024-11-08 14:16:29,481 INFO  L229       MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-08 14:16:29,483 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process
[2024-11-08 14:16:29,569 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 14:16:29,573 INFO  L255         TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 13 conjuncts are in the unsatisfiable core
[2024-11-08 14:16:29,575 INFO  L278         TraceCheckSpWp]: Computing forward predicates...
[2024-11-08 14:16:29,724 INFO  L134       CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-08 14:16:29,724 INFO  L311         TraceCheckSpWp]: Computing backward predicates...
[2024-11-08 14:16:30,615 INFO  L134       CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-08 14:16:30,615 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-08 14:16:30,616 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1854383983]
[2024-11-08 14:16:30,616 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2024-11-08 14:16:30,616 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [725975521]
[2024-11-08 14:16:30,616 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [725975521] provided 0 perfect and 2 imperfect interpolant sequences
[2024-11-08 14:16:30,616 INFO  L185   FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2024-11-08 14:16:30,616 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 10
[2024-11-08 14:16:30,617 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [410625583]
[2024-11-08 14:16:30,617 INFO  L85    oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2024-11-08 14:16:30,617 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 10 states
[2024-11-08 14:16:30,617 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-08 14:16:30,618 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants.
[2024-11-08 14:16:30,618 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90
[2024-11-08 14:16:30,618 INFO  L87              Difference]: Start difference. First operand 79 states and 114 transitions. Second operand  has 10 states, 10 states have (on average 2.5) internal successors, (25), 9 states have internal predecessors, (25), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2024-11-08 14:16:40,792 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers []
[2024-11-08 14:16:41,947 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.11s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers []
[2024-11-08 14:16:48,864 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers []
[2024-11-08 14:16:53,438 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.56s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers []
[2024-11-08 14:16:57,458 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers []
[2024-11-08 14:17:01,856 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers []
[2024-11-08 14:17:03,420 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.09s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers []
[2024-11-08 14:17:07,658 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers []
[2024-11-08 14:17:11,663 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers []
[2024-11-08 14:17:15,666 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers []
[2024-11-08 14:17:19,706 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers []
[2024-11-08 14:17:23,711 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers []
[2024-11-08 14:17:27,753 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers []
[2024-11-08 14:17:28,658 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-08 14:17:28,658 INFO  L93              Difference]: Finished difference Result 148 states and 217 transitions.
[2024-11-08 14:17:28,659 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. 
[2024-11-08 14:17:28,659 INFO  L78                 Accepts]: Start accepts. Automaton has  has 10 states, 10 states have (on average 2.5) internal successors, (25), 9 states have internal predecessors, (25), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 20
[2024-11-08 14:17:28,659 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-08 14:17:28,666 INFO  L225             Difference]: With dead ends: 148
[2024-11-08 14:17:28,667 INFO  L226             Difference]: Without dead ends: 124
[2024-11-08 14:17:28,667 INFO  L431           NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 29 SyntacticMatches, 2 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 6.9s TimeCoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132
[2024-11-08 14:17:28,668 INFO  L432           NwaCegarLoop]: 47 mSDtfsCounter, 21 mSDsluCounter, 196 mSDsCounter, 0 mSdLazyCounter, 188 mSolverCounterSat, 59 mSolverCounterUnsat, 11 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 51.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 243 SdHoareTripleChecker+Invalid, 258 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 188 IncrementalHoareTripleChecker+Invalid, 11 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 51.9s IncrementalHoareTripleChecker+Time
[2024-11-08 14:17:28,668 INFO  L433           NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 243 Invalid, 258 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 188 Invalid, 11 Unknown, 0 Unchecked, 51.9s Time]
[2024-11-08 14:17:28,669 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 124 states.
[2024-11-08 14:17:28,692 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 118.
[2024-11-08 14:17:28,693 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 118 states, 56 states have (on average 1.1964285714285714) internal successors, (67), 59 states have internal predecessors, (67), 53 states have call successors, (53), 8 states have call predecessors, (53), 8 states have return successors, (51), 50 states have call predecessors, (51), 51 states have call successors, (51)
[2024-11-08 14:17:28,694 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 171 transitions.
[2024-11-08 14:17:28,694 INFO  L78                 Accepts]: Start accepts. Automaton has 118 states and 171 transitions. Word has length 20
[2024-11-08 14:17:28,695 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-08 14:17:28,695 INFO  L471      AbstractCegarLoop]: Abstraction has 118 states and 171 transitions.
[2024-11-08 14:17:28,695 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 10 states, 10 states have (on average 2.5) internal successors, (25), 9 states have internal predecessors, (25), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2024-11-08 14:17:28,695 INFO  L276                IsEmpty]: Start isEmpty. Operand 118 states and 171 transitions.
[2024-11-08 14:17:28,696 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 33
[2024-11-08 14:17:28,696 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-08 14:17:28,697 INFO  L215           NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-08 14:17:28,705 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0
[2024-11-08 14:17:28,903 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 14:17:28,904 INFO  L396      AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-08 14:17:28,904 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-08 14:17:28,904 INFO  L85        PathProgramCache]: Analyzing trace with hash -1134170499, now seen corresponding path program 1 times
[2024-11-08 14:17:28,904 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-08 14:17:28,905 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [185473008]
[2024-11-08 14:17:28,905 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-08 14:17:28,905 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-08 14:17:28,956 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unknown
[2024-11-08 14:17:28,957 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1943398845]
[2024-11-08 14:17:28,957 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-08 14:17:28,957 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 14:17:28,958 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2024-11-08 14:17:28,960 INFO  L229       MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-08 14:17:28,962 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process
[2024-11-08 14:17:29,023 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 14:17:29,024 INFO  L255         TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 11 conjuncts are in the unsatisfiable core
[2024-11-08 14:17:29,026 INFO  L278         TraceCheckSpWp]: Computing forward predicates...
[2024-11-08 14:17:29,205 INFO  L134       CoverageAnalysis]: Checked inductivity of 30 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked.
[2024-11-08 14:17:29,205 INFO  L307         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2024-11-08 14:17:29,205 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-08 14:17:29,205 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [185473008]
[2024-11-08 14:17:29,206 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2024-11-08 14:17:29,206 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1943398845]
[2024-11-08 14:17:29,206 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1943398845] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-08 14:17:29,206 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-08 14:17:29,206 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8
[2024-11-08 14:17:29,206 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1544760674]
[2024-11-08 14:17:29,207 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-08 14:17:29,207 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 8 states
[2024-11-08 14:17:29,207 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-08 14:17:29,208 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2024-11-08 14:17:29,208 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56
[2024-11-08 14:17:29,208 INFO  L87              Difference]: Start difference. First operand 118 states and 171 transitions. Second operand  has 8 states, 8 states have (on average 2.375) internal successors, (19), 7 states have internal predecessors, (19), 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)
[2024-11-08 14:17:29,506 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-08 14:17:29,506 INFO  L93              Difference]: Finished difference Result 132 states and 182 transitions.
[2024-11-08 14:17:29,507 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. 
[2024-11-08 14:17:29,507 INFO  L78                 Accepts]: Start accepts. Automaton has  has 8 states, 8 states have (on average 2.375) internal successors, (19), 7 states have internal predecessors, (19), 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 32
[2024-11-08 14:17:29,508 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-08 14:17:29,510 INFO  L225             Difference]: With dead ends: 132
[2024-11-08 14:17:29,510 INFO  L226             Difference]: Without dead ends: 130
[2024-11-08 14:17:29,511 INFO  L431           NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72
[2024-11-08 14:17:29,511 INFO  L432           NwaCegarLoop]: 59 mSDtfsCounter, 9 mSDsluCounter, 168 mSDsCounter, 0 mSdLazyCounter, 113 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 227 SdHoareTripleChecker+Invalid, 118 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time
[2024-11-08 14:17:29,512 INFO  L433           NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 227 Invalid, 118 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 113 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time]
[2024-11-08 14:17:29,513 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 130 states.
[2024-11-08 14:17:29,550 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 130.
[2024-11-08 14:17:29,550 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 130 states, 65 states have (on average 1.1692307692307693) internal successors, (76), 68 states have internal predecessors, (76), 53 states have call successors, (53), 11 states have call predecessors, (53), 11 states have return successors, (51), 50 states have call predecessors, (51), 51 states have call successors, (51)
[2024-11-08 14:17:29,553 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 180 transitions.
[2024-11-08 14:17:29,554 INFO  L78                 Accepts]: Start accepts. Automaton has 130 states and 180 transitions. Word has length 32
[2024-11-08 14:17:29,554 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-08 14:17:29,554 INFO  L471      AbstractCegarLoop]: Abstraction has 130 states and 180 transitions.
[2024-11-08 14:17:29,555 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 8 states, 8 states have (on average 2.375) internal successors, (19), 7 states have internal predecessors, (19), 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)
[2024-11-08 14:17:29,555 INFO  L276                IsEmpty]: Start isEmpty. Operand 130 states and 180 transitions.
[2024-11-08 14:17:29,556 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 48
[2024-11-08 14:17:29,558 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-08 14:17:29,558 INFO  L215           NwaCegarLoop]: trace histogram [8, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-08 14:17:29,576 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0
[2024-11-08 14:17:29,761 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 14:17:29,762 INFO  L396      AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-08 14:17:29,762 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-08 14:17:29,762 INFO  L85        PathProgramCache]: Analyzing trace with hash 635245679, now seen corresponding path program 1 times
[2024-11-08 14:17:29,762 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-08 14:17:29,762 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [916937375]
[2024-11-08 14:17:29,762 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-08 14:17:29,763 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-08 14:17:29,787 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unknown
[2024-11-08 14:17:29,788 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [232939978]
[2024-11-08 14:17:29,788 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-08 14:17:29,789 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 14:17:29,789 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2024-11-08 14:17:29,790 INFO  L229       MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-08 14:17:29,792 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process
[2024-11-08 14:17:29,841 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 14:17:29,843 INFO  L255         TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 14 conjuncts are in the unsatisfiable core
[2024-11-08 14:17:29,845 INFO  L278         TraceCheckSpWp]: Computing forward predicates...
[2024-11-08 14:17:30,014 INFO  L134       CoverageAnalysis]: Checked inductivity of 98 backedges. 31 proven. 1 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked.
[2024-11-08 14:17:30,015 INFO  L311         TraceCheckSpWp]: Computing backward predicates...