./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/hardness-nfm22/hardness_codestructure_steplocals_file-66.i --full-output --architecture 32bit


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


Checking for ERROR reachability
Using default analysis
Version 803cd42f
Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/hardness-nfm22/hardness_codestructure_steplocals_file-66.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 2b1ff31db509e6effa7c7aab233d1c51ba648bc5079bf259c615627714f8cf03
--- Real Ultimate output ---
This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-803cd42-m
[2024-11-22 06:41:24,662 INFO  L188        SettingsManager]: Resetting all preferences to default values...
[2024-11-22 06:41:24,710 INFO  L114        SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf
[2024-11-22 06:41:24,714 WARN  L101        SettingsManager]: Preference file contains the following unknown settings:
[2024-11-22 06:41:24,715 WARN  L103        SettingsManager]:   * de.uni_freiburg.informatik.ultimate.core.Log level for class
[2024-11-22 06:41:24,749 INFO  L130        SettingsManager]: Preferences different from defaults after loading the file:
[2024-11-22 06:41:24,751 INFO  L151        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2024-11-22 06:41:24,751 INFO  L153        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2024-11-22 06:41:24,752 INFO  L151        SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults:
[2024-11-22 06:41:24,753 INFO  L153        SettingsManager]:  * Use memory slicer=true
[2024-11-22 06:41:24,754 INFO  L151        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2024-11-22 06:41:24,754 INFO  L153        SettingsManager]:  * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2024-11-22 06:41:24,755 INFO  L151        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2024-11-22 06:41:24,755 INFO  L153        SettingsManager]:  * Create parallel compositions if possible=false
[2024-11-22 06:41:24,755 INFO  L153        SettingsManager]:  * Use SBE=true
[2024-11-22 06:41:24,755 INFO  L151        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2024-11-22 06:41:24,756 INFO  L153        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2024-11-22 06:41:24,756 INFO  L153        SettingsManager]:  * sizeof long=4
[2024-11-22 06:41:24,756 INFO  L153        SettingsManager]:  * Overapproximate operations on floating types=true
[2024-11-22 06:41:24,756 INFO  L153        SettingsManager]:  * sizeof POINTER=4
[2024-11-22 06:41:24,757 INFO  L153        SettingsManager]:  * Check division by zero=IGNORE
[2024-11-22 06:41:24,761 INFO  L153        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2024-11-22 06:41:24,761 INFO  L153        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2024-11-22 06:41:24,761 INFO  L153        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2024-11-22 06:41:24,762 INFO  L153        SettingsManager]:  * Allow undefined functions=false
[2024-11-22 06:41:24,762 INFO  L153        SettingsManager]:  * sizeof long double=12
[2024-11-22 06:41:24,762 INFO  L153        SettingsManager]:  * Check if freed pointer was valid=false
[2024-11-22 06:41:24,762 INFO  L153        SettingsManager]:  * Use constant arrays=true
[2024-11-22 06:41:24,763 INFO  L151        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2024-11-22 06:41:24,763 INFO  L153        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2024-11-22 06:41:24,763 INFO  L153        SettingsManager]:  * Only consider context switches at boundaries of atomic blocks=true
[2024-11-22 06:41:24,764 INFO  L153        SettingsManager]:  * SMT solver=External_DefaultMode
[2024-11-22 06:41:24,764 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2024-11-22 06:41:24,764 INFO  L151        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2024-11-22 06:41:24,764 INFO  L153        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2024-11-22 06:41:24,764 INFO  L153        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopHeads
[2024-11-22 06:41:24,765 INFO  L153        SettingsManager]:  * Trace refinement strategy=CAMEL
[2024-11-22 06:41:24,765 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2024-11-22 06:41:24,765 INFO  L153        SettingsManager]:  * Apply one-shot large block encoding in concurrent analysis=false
[2024-11-22 06:41:24,766 INFO  L153        SettingsManager]:  * Automaton type used in concurrency analysis=PETRI_NET
[2024-11-22 06:41:24,766 INFO  L153        SettingsManager]:  * Order on configurations for Petri net unfoldings=DBO
[2024-11-22 06:41:24,767 INFO  L153        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2024-11-22 06:41:24,767 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 -> 2b1ff31db509e6effa7c7aab233d1c51ba648bc5079bf259c615627714f8cf03
[2024-11-22 06:41:24,997 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2024-11-22 06:41:25,014 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2024-11-22 06:41:25,017 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2024-11-22 06:41:25,018 INFO  L270        PluginConnector]: Initializing CDTParser...
[2024-11-22 06:41:25,019 INFO  L274        PluginConnector]: CDTParser initialized
[2024-11-22 06:41:25,020 INFO  L431   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/hardness-nfm22/hardness_codestructure_steplocals_file-66.i
[2024-11-22 06:41:26,143 INFO  L533              CDTParser]: Created temporary CDT project at NULL
[2024-11-22 06:41:26,327 INFO  L384              CDTParser]: Found 1 translation units.
[2024-11-22 06:41:26,330 INFO  L180              CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_codestructure_steplocals_file-66.i
[2024-11-22 06:41:26,341 INFO  L427              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/217bacd70/c45336a69d7a437f848d511d1a6abf62/FLAG216c14ef4
[2024-11-22 06:41:26,733 INFO  L435              CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/217bacd70/c45336a69d7a437f848d511d1a6abf62
[2024-11-22 06:41:26,735 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2024-11-22 06:41:26,736 INFO  L133        ToolchainWalker]: Walking toolchain with 6 elements.
[2024-11-22 06:41:26,737 INFO  L112        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2024-11-22 06:41:26,737 INFO  L270        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2024-11-22 06:41:26,741 INFO  L274        PluginConnector]: CACSL2BoogieTranslator initialized
[2024-11-22 06:41:26,742 INFO  L184        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 06:41:26" (1/1) ...
[2024-11-22 06:41:26,742 INFO  L204        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3362a4b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 06:41:26, skipping insertion in model container
[2024-11-22 06:41:26,742 INFO  L184        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 06:41:26" (1/1) ...
[2024-11-22 06:41:26,765 INFO  L175         MainTranslator]: Built tables and reachable declarations
[2024-11-22 06:41:26,898 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/hardness-nfm22/hardness_codestructure_steplocals_file-66.i[917,930]
[2024-11-22 06:41:26,943 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2024-11-22 06:41:26,954 INFO  L200         MainTranslator]: Completed pre-run
[2024-11-22 06:41:26,963 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/hardness-nfm22/hardness_codestructure_steplocals_file-66.i[917,930]
[2024-11-22 06:41:26,986 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2024-11-22 06:41:27,003 INFO  L204         MainTranslator]: Completed translation
[2024-11-22 06:41:27,004 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 06:41:27 WrapperNode
[2024-11-22 06:41:27,004 INFO  L131        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2024-11-22 06:41:27,004 INFO  L112        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2024-11-22 06:41:27,005 INFO  L270        PluginConnector]: Initializing Boogie Procedure Inliner...
[2024-11-22 06:41:27,005 INFO  L274        PluginConnector]: Boogie Procedure Inliner initialized
[2024-11-22 06:41:27,010 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 06:41:27" (1/1) ...
[2024-11-22 06:41:27,017 INFO  L184        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 06:41:27" (1/1) ...
[2024-11-22 06:41:27,039 INFO  L138                Inliner]: procedures = 26, calls = 39, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 154
[2024-11-22 06:41:27,039 INFO  L131        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2024-11-22 06:41:27,040 INFO  L112        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2024-11-22 06:41:27,040 INFO  L270        PluginConnector]: Initializing Boogie Preprocessor...
[2024-11-22 06:41:27,040 INFO  L274        PluginConnector]: Boogie Preprocessor initialized
[2024-11-22 06:41:27,051 INFO  L184        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 06:41:27" (1/1) ...
[2024-11-22 06:41:27,052 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 06:41:27" (1/1) ...
[2024-11-22 06:41:27,054 INFO  L184        PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 06:41:27" (1/1) ...
[2024-11-22 06:41:27,065 INFO  L175           MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0].
[2024-11-22 06:41:27,066 INFO  L184        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 06:41:27" (1/1) ...
[2024-11-22 06:41:27,066 INFO  L184        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 06:41:27" (1/1) ...
[2024-11-22 06:41:27,073 INFO  L184        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 06:41:27" (1/1) ...
[2024-11-22 06:41:27,079 INFO  L184        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 06:41:27" (1/1) ...
[2024-11-22 06:41:27,080 INFO  L184        PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 06:41:27" (1/1) ...
[2024-11-22 06:41:27,081 INFO  L184        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 06:41:27" (1/1) ...
[2024-11-22 06:41:27,091 INFO  L131        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2024-11-22 06:41:27,092 INFO  L112        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2024-11-22 06:41:27,092 INFO  L270        PluginConnector]: Initializing RCFGBuilder...
[2024-11-22 06:41:27,092 INFO  L274        PluginConnector]: RCFGBuilder initialized
[2024-11-22 06:41:27,093 INFO  L184        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 06:41:27" (1/1) ...
[2024-11-22 06:41:27,097 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2024-11-22 06:41:27,104 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2024-11-22 06:41:27,121 INFO  L229       MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null)
[2024-11-22 06:41:27,123 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process
[2024-11-22 06:41:27,158 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2024-11-22 06:41:27,159 INFO  L130     BoogieDeclarations]: Found specification of procedure assume_abort_if_not
[2024-11-22 06:41:27,160 INFO  L138     BoogieDeclarations]: Found implementation of procedure assume_abort_if_not
[2024-11-22 06:41:27,160 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int#0
[2024-11-22 06:41:27,160 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2024-11-22 06:41:27,160 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2024-11-22 06:41:27,236 INFO  L238             CfgBuilder]: Building ICFG
[2024-11-22 06:41:27,237 INFO  L264             CfgBuilder]: Building CFG for each procedure with an implementation
[2024-11-22 06:41:27,478 INFO  L?                        ?]: Removed 18 outVars from TransFormulas that were not future-live.
[2024-11-22 06:41:27,478 INFO  L287             CfgBuilder]: Performing block encoding
[2024-11-22 06:41:27,489 INFO  L311             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2024-11-22 06:41:27,489 INFO  L316             CfgBuilder]: Removed 1 assume(true) statements.
[2024-11-22 06:41:27,489 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 06:41:27 BoogieIcfgContainer
[2024-11-22 06:41:27,490 INFO  L131        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2024-11-22 06:41:27,491 INFO  L112        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2024-11-22 06:41:27,491 INFO  L270        PluginConnector]: Initializing TraceAbstraction...
[2024-11-22 06:41:27,493 INFO  L274        PluginConnector]: TraceAbstraction initialized
[2024-11-22 06:41:27,494 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 06:41:26" (1/3) ...
[2024-11-22 06:41:27,494 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c1ab34f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 06:41:27, skipping insertion in model container
[2024-11-22 06:41:27,494 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 06:41:27" (2/3) ...
[2024-11-22 06:41:27,494 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c1ab34f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 06:41:27, skipping insertion in model container
[2024-11-22 06:41:27,495 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 06:41:27" (3/3) ...
[2024-11-22 06:41:27,497 INFO  L112   eAbstractionObserver]: Analyzing ICFG hardness_codestructure_steplocals_file-66.i
[2024-11-22 06:41:27,509 INFO  L214   ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2024-11-22 06:41:27,509 INFO  L154   ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2024-11-22 06:41:27,553 INFO  L332      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2024-11-22 06:41:27,559 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;@2b6bc50f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2024-11-22 06:41:27,559 INFO  L334      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2024-11-22 06:41:27,562 INFO  L276                IsEmpty]: Start isEmpty. Operand  has 74 states, 45 states have (on average 1.3777777777777778) internal successors, (62), 46 states have internal predecessors, (62), 26 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26)
[2024-11-22 06:41:27,580 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 165
[2024-11-22 06:41:27,580 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-22 06:41:27,581 INFO  L215           NwaCegarLoop]: trace histogram [26, 26, 26, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-22 06:41:27,581 INFO  L396      AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-22 06:41:27,587 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-22 06:41:27,588 INFO  L85        PathProgramCache]: Analyzing trace with hash -1657202567, now seen corresponding path program 1 times
[2024-11-22 06:41:27,594 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-22 06:41:27,594 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1015883437]
[2024-11-22 06:41:27,595 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-22 06:41:27,595 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-22 06:41:27,709 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-22 06:41:27,869 INFO  L134       CoverageAnalysis]: Checked inductivity of 1300 backedges. 0 proven. 50 refuted. 0 times theorem prover too weak. 1250 trivial. 0 not checked.
[2024-11-22 06:41:27,871 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-22 06:41:27,871 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1015883437]
[2024-11-22 06:41:27,872 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1015883437] provided 0 perfect and 1 imperfect interpolant sequences
[2024-11-22 06:41:27,872 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [104432219]
[2024-11-22 06:41:27,872 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-22 06:41:27,873 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-22 06:41:27,873 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2024-11-22 06:41:27,875 INFO  L229       MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-22 06:41:27,877 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process
[2024-11-22 06:41:28,018 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-22 06:41:28,021 INFO  L255         TraceCheckSpWp]: Trace formula consists of 367 conjuncts, 1 conjuncts are in the unsatisfiable core
[2024-11-22 06:41:28,031 INFO  L278         TraceCheckSpWp]: Computing forward predicates...
[2024-11-22 06:41:28,064 INFO  L134       CoverageAnalysis]: Checked inductivity of 1300 backedges. 50 proven. 0 refuted. 0 times theorem prover too weak. 1250 trivial. 0 not checked.
[2024-11-22 06:41:28,068 INFO  L307         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2024-11-22 06:41:28,068 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [104432219] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-22 06:41:28,068 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2024-11-22 06:41:28,069 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2
[2024-11-22 06:41:28,072 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [551297787]
[2024-11-22 06:41:28,073 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-22 06:41:28,076 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 2 states
[2024-11-22 06:41:28,076 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-22 06:41:28,096 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants.
[2024-11-22 06:41:28,096 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2024-11-22 06:41:28,098 INFO  L87              Difference]: Start difference. First operand  has 74 states, 45 states have (on average 1.3777777777777778) internal successors, (62), 46 states have internal predecessors, (62), 26 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) Second operand  has 2 states, 2 states have (on average 19.5) internal successors, (39), 2 states have internal predecessors, (39), 2 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 2 states have call successors, (26)
[2024-11-22 06:41:28,119 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-22 06:41:28,119 INFO  L93              Difference]: Finished difference Result 141 states and 248 transitions.
[2024-11-22 06:41:28,120 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. 
[2024-11-22 06:41:28,121 INFO  L78                 Accepts]: Start accepts. Automaton has  has 2 states, 2 states have (on average 19.5) internal successors, (39), 2 states have internal predecessors, (39), 2 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 2 states have call successors, (26) Word has length 164
[2024-11-22 06:41:28,121 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-22 06:41:28,126 INFO  L225             Difference]: With dead ends: 141
[2024-11-22 06:41:28,126 INFO  L226             Difference]: Without dead ends: 70
[2024-11-22 06:41:28,129 INFO  L431           NwaCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 165 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2024-11-22 06:41:28,131 INFO  L432           NwaCegarLoop]: 107 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, 107 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
[2024-11-22 06:41:28,132 INFO  L433           NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 107 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2024-11-22 06:41:28,144 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 70 states.
[2024-11-22 06:41:28,164 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 70.
[2024-11-22 06:41:28,165 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 70 states, 42 states have (on average 1.3095238095238095) internal successors, (55), 42 states have internal predecessors, (55), 26 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26)
[2024-11-22 06:41:28,167 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 107 transitions.
[2024-11-22 06:41:28,168 INFO  L78                 Accepts]: Start accepts. Automaton has 70 states and 107 transitions. Word has length 164
[2024-11-22 06:41:28,168 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-22 06:41:28,168 INFO  L471      AbstractCegarLoop]: Abstraction has 70 states and 107 transitions.
[2024-11-22 06:41:28,169 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 2 states, 2 states have (on average 19.5) internal successors, (39), 2 states have internal predecessors, (39), 2 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 2 states have call successors, (26)
[2024-11-22 06:41:28,169 INFO  L276                IsEmpty]: Start isEmpty. Operand 70 states and 107 transitions.
[2024-11-22 06:41:28,171 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 165
[2024-11-22 06:41:28,171 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-22 06:41:28,172 INFO  L215           NwaCegarLoop]: trace histogram [26, 26, 26, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-22 06:41:28,178 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0
[2024-11-22 06:41:28,372 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0
[2024-11-22 06:41:28,373 INFO  L396      AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-22 06:41:28,373 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-22 06:41:28,374 INFO  L85        PathProgramCache]: Analyzing trace with hash 1173335865, now seen corresponding path program 1 times
[2024-11-22 06:41:28,374 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-22 06:41:28,374 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [581363807]
[2024-11-22 06:41:28,374 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-22 06:41:28,374 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-22 06:41:28,550 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-22 06:41:41,869 INFO  L134       CoverageAnalysis]: Checked inductivity of 1300 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked.
[2024-11-22 06:41:41,869 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-22 06:41:41,869 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [581363807]
[2024-11-22 06:41:41,869 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [581363807] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-22 06:41:41,869 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-22 06:41:41,870 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15
[2024-11-22 06:41:41,870 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1273076206]
[2024-11-22 06:41:41,870 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-22 06:41:41,871 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 15 states
[2024-11-22 06:41:41,871 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-22 06:41:41,872 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants.
[2024-11-22 06:41:41,872 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=142, Unknown=0, NotChecked=0, Total=210
[2024-11-22 06:41:41,872 INFO  L87              Difference]: Start difference. First operand 70 states and 107 transitions. Second operand  has 15 states, 15 states have (on average 2.466666666666667) internal successors, (37), 15 states have internal predecessors, (37), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26)
[2024-11-22 06:41:43,199 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-22 06:41:43,199 INFO  L93              Difference]: Finished difference Result 214 states and 295 transitions.
[2024-11-22 06:41:43,200 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. 
[2024-11-22 06:41:43,200 INFO  L78                 Accepts]: Start accepts. Automaton has  has 15 states, 15 states have (on average 2.466666666666667) internal successors, (37), 15 states have internal predecessors, (37), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) Word has length 164
[2024-11-22 06:41:43,201 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-22 06:41:43,203 INFO  L225             Difference]: With dead ends: 214
[2024-11-22 06:41:43,203 INFO  L226             Difference]: Without dead ends: 212
[2024-11-22 06:41:43,203 INFO  L431           NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=90, Invalid=182, Unknown=0, NotChecked=0, Total=272
[2024-11-22 06:41:43,205 INFO  L432           NwaCegarLoop]: 92 mSDtfsCounter, 245 mSDsluCounter, 624 mSDsCounter, 0 mSdLazyCounter, 417 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 245 SdHoareTripleChecker+Valid, 716 SdHoareTripleChecker+Invalid, 436 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 417 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time
[2024-11-22 06:41:43,205 INFO  L433           NwaCegarLoop]: SdHoareTripleChecker [245 Valid, 716 Invalid, 436 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 417 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time]
[2024-11-22 06:41:43,207 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 212 states.
[2024-11-22 06:41:43,236 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 112.
[2024-11-22 06:41:43,238 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 112 states, 81 states have (on average 1.4074074074074074) internal successors, (114), 82 states have internal predecessors, (114), 28 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (28), 27 states have call predecessors, (28), 28 states have call successors, (28)
[2024-11-22 06:41:43,239 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 170 transitions.
[2024-11-22 06:41:43,241 INFO  L78                 Accepts]: Start accepts. Automaton has 112 states and 170 transitions. Word has length 164
[2024-11-22 06:41:43,241 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-22 06:41:43,242 INFO  L471      AbstractCegarLoop]: Abstraction has 112 states and 170 transitions.
[2024-11-22 06:41:43,242 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 15 states, 15 states have (on average 2.466666666666667) internal successors, (37), 15 states have internal predecessors, (37), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26)
[2024-11-22 06:41:43,242 INFO  L276                IsEmpty]: Start isEmpty. Operand 112 states and 170 transitions.
[2024-11-22 06:41:43,244 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 165
[2024-11-22 06:41:43,244 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-22 06:41:43,244 INFO  L215           NwaCegarLoop]: trace histogram [26, 26, 26, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-22 06:41:43,244 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2024-11-22 06:41:43,244 INFO  L396      AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-22 06:41:43,245 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-22 06:41:43,245 INFO  L85        PathProgramCache]: Analyzing trace with hash 363989239, now seen corresponding path program 1 times
[2024-11-22 06:41:43,245 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-22 06:41:43,245 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1309595275]
[2024-11-22 06:41:43,245 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-22 06:41:43,246 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-22 06:41:43,315 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-22 06:41:55,463 INFO  L134       CoverageAnalysis]: Checked inductivity of 1300 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked.
[2024-11-22 06:41:55,463 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-22 06:41:55,463 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1309595275]
[2024-11-22 06:41:55,464 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1309595275] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-22 06:41:55,464 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-22 06:41:55,464 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15
[2024-11-22 06:41:55,464 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [935859166]
[2024-11-22 06:41:55,464 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-22 06:41:55,465 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 15 states
[2024-11-22 06:41:55,465 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-22 06:41:55,465 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants.
[2024-11-22 06:41:55,466 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210
[2024-11-22 06:41:55,466 INFO  L87              Difference]: Start difference. First operand 112 states and 170 transitions. Second operand  has 15 states, 15 states have (on average 2.466666666666667) internal successors, (37), 15 states have internal predecessors, (37), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26)
[2024-11-22 06:41:56,693 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-22 06:41:56,693 INFO  L93              Difference]: Finished difference Result 202 states and 282 transitions.
[2024-11-22 06:41:56,694 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. 
[2024-11-22 06:41:56,694 INFO  L78                 Accepts]: Start accepts. Automaton has  has 15 states, 15 states have (on average 2.466666666666667) internal successors, (37), 15 states have internal predecessors, (37), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) Word has length 164
[2024-11-22 06:41:56,695 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-22 06:41:56,696 INFO  L225             Difference]: With dead ends: 202
[2024-11-22 06:41:56,696 INFO  L226             Difference]: Without dead ends: 200
[2024-11-22 06:41:56,697 INFO  L431           NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=96, Invalid=176, Unknown=0, NotChecked=0, Total=272
[2024-11-22 06:41:56,698 INFO  L432           NwaCegarLoop]: 94 mSDtfsCounter, 191 mSDsluCounter, 524 mSDsCounter, 0 mSdLazyCounter, 321 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 191 SdHoareTripleChecker+Valid, 618 SdHoareTripleChecker+Invalid, 338 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 321 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time
[2024-11-22 06:41:56,698 INFO  L433           NwaCegarLoop]: SdHoareTripleChecker [191 Valid, 618 Invalid, 338 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 321 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time]
[2024-11-22 06:41:56,699 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 200 states.
[2024-11-22 06:41:56,718 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 112.
[2024-11-22 06:41:56,718 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 112 states, 81 states have (on average 1.4074074074074074) internal successors, (114), 82 states have internal predecessors, (114), 28 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (28), 27 states have call predecessors, (28), 28 states have call successors, (28)
[2024-11-22 06:41:56,719 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 170 transitions.
[2024-11-22 06:41:56,720 INFO  L78                 Accepts]: Start accepts. Automaton has 112 states and 170 transitions. Word has length 164
[2024-11-22 06:41:56,721 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-22 06:41:56,721 INFO  L471      AbstractCegarLoop]: Abstraction has 112 states and 170 transitions.
[2024-11-22 06:41:56,721 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 15 states, 15 states have (on average 2.466666666666667) internal successors, (37), 15 states have internal predecessors, (37), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26)
[2024-11-22 06:41:56,721 INFO  L276                IsEmpty]: Start isEmpty. Operand 112 states and 170 transitions.
[2024-11-22 06:41:56,723 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 165
[2024-11-22 06:41:56,723 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-22 06:41:56,723 INFO  L215           NwaCegarLoop]: trace histogram [26, 26, 26, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-22 06:41:56,723 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2024-11-22 06:41:56,724 INFO  L396      AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-22 06:41:56,724 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-22 06:41:56,724 INFO  L85        PathProgramCache]: Analyzing trace with hash 1874400443, now seen corresponding path program 1 times
[2024-11-22 06:41:56,724 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-22 06:41:56,724 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1886352022]
[2024-11-22 06:41:56,724 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-22 06:41:56,725 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-22 06:41:56,764 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-22 06:41:57,164 INFO  L134       CoverageAnalysis]: Checked inductivity of 1300 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked.
[2024-11-22 06:41:57,165 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-22 06:41:57,165 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1886352022]
[2024-11-22 06:41:57,165 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1886352022] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-22 06:41:57,165 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-22 06:41:57,167 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9
[2024-11-22 06:41:57,169 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1958615450]
[2024-11-22 06:41:57,169 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-22 06:41:57,170 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 9 states
[2024-11-22 06:41:57,170 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-22 06:41:57,170 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants.
[2024-11-22 06:41:57,172 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72
[2024-11-22 06:41:57,172 INFO  L87              Difference]: Start difference. First operand 112 states and 170 transitions. Second operand  has 9 states, 9 states have (on average 4.111111111111111) internal successors, (37), 9 states have internal predecessors, (37), 4 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 4 states have call predecessors, (26), 4 states have call successors, (26)
[2024-11-22 06:41:57,594 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-22 06:41:57,596 INFO  L93              Difference]: Finished difference Result 322 states and 469 transitions.
[2024-11-22 06:41:57,597 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. 
[2024-11-22 06:41:57,597 INFO  L78                 Accepts]: Start accepts. Automaton has  has 9 states, 9 states have (on average 4.111111111111111) internal successors, (37), 9 states have internal predecessors, (37), 4 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 4 states have call predecessors, (26), 4 states have call successors, (26) Word has length 164
[2024-11-22 06:41:57,597 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-22 06:41:57,601 INFO  L225             Difference]: With dead ends: 322
[2024-11-22 06:41:57,601 INFO  L226             Difference]: Without dead ends: 213
[2024-11-22 06:41:57,602 INFO  L431           NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=60, Invalid=122, Unknown=0, NotChecked=0, Total=182
[2024-11-22 06:41:57,605 INFO  L432           NwaCegarLoop]: 94 mSDtfsCounter, 399 mSDsluCounter, 128 mSDsCounter, 0 mSdLazyCounter, 282 mSolverCounterSat, 171 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 399 SdHoareTripleChecker+Valid, 222 SdHoareTripleChecker+Invalid, 453 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 171 IncrementalHoareTripleChecker+Valid, 282 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time
[2024-11-22 06:41:57,606 INFO  L433           NwaCegarLoop]: SdHoareTripleChecker [399 Valid, 222 Invalid, 453 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [171 Valid, 282 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time]
[2024-11-22 06:41:57,606 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 213 states.
[2024-11-22 06:41:57,627 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 124.
[2024-11-22 06:41:57,628 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 124 states, 91 states have (on average 1.3626373626373627) internal successors, (124), 92 states have internal predecessors, (124), 28 states have call successors, (28), 4 states have call predecessors, (28), 4 states have return successors, (28), 27 states have call predecessors, (28), 28 states have call successors, (28)
[2024-11-22 06:41:57,629 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 180 transitions.
[2024-11-22 06:41:57,630 INFO  L78                 Accepts]: Start accepts. Automaton has 124 states and 180 transitions. Word has length 164
[2024-11-22 06:41:57,630 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-22 06:41:57,630 INFO  L471      AbstractCegarLoop]: Abstraction has 124 states and 180 transitions.
[2024-11-22 06:41:57,630 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 9 states, 9 states have (on average 4.111111111111111) internal successors, (37), 9 states have internal predecessors, (37), 4 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 4 states have call predecessors, (26), 4 states have call successors, (26)
[2024-11-22 06:41:57,631 INFO  L276                IsEmpty]: Start isEmpty. Operand 124 states and 180 transitions.
[2024-11-22 06:41:57,632 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 165
[2024-11-22 06:41:57,632 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-22 06:41:57,632 INFO  L215           NwaCegarLoop]: trace histogram [26, 26, 26, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-22 06:41:57,632 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3
[2024-11-22 06:41:57,632 INFO  L396      AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-22 06:41:57,633 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-22 06:41:57,633 INFO  L85        PathProgramCache]: Analyzing trace with hash 152267511, now seen corresponding path program 1 times
[2024-11-22 06:41:57,633 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-22 06:41:57,633 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [367851528]
[2024-11-22 06:41:57,633 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-22 06:41:57,633 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-22 06:41:57,648 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-22 06:41:57,710 INFO  L134       CoverageAnalysis]: Checked inductivity of 1300 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked.
[2024-11-22 06:41:57,710 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-22 06:41:57,710 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [367851528]
[2024-11-22 06:41:57,711 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [367851528] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-22 06:41:57,711 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-22 06:41:57,711 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2024-11-22 06:41:57,711 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1357881583]
[2024-11-22 06:41:57,712 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-22 06:41:57,712 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2024-11-22 06:41:57,712 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-22 06:41:57,713 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2024-11-22 06:41:57,713 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2024-11-22 06:41:57,714 INFO  L87              Difference]: Start difference. First operand 124 states and 180 transitions. Second operand  has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26)
[2024-11-22 06:41:57,879 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-22 06:41:57,879 INFO  L93              Difference]: Finished difference Result 398 states and 567 transitions.
[2024-11-22 06:41:57,879 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2024-11-22 06:41:57,879 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) Word has length 164
[2024-11-22 06:41:57,880 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-22 06:41:57,881 INFO  L225             Difference]: With dead ends: 398
[2024-11-22 06:41:57,881 INFO  L226             Difference]: Without dead ends: 277
[2024-11-22 06:41:57,882 INFO  L431           NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42
[2024-11-22 06:41:57,882 INFO  L432           NwaCegarLoop]: 151 mSDtfsCounter, 87 mSDsluCounter, 281 mSDsCounter, 0 mSdLazyCounter, 125 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 432 SdHoareTripleChecker+Invalid, 137 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 125 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2024-11-22 06:41:57,883 INFO  L433           NwaCegarLoop]: SdHoareTripleChecker [87 Valid, 432 Invalid, 137 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 125 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2024-11-22 06:41:57,886 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 277 states.
[2024-11-22 06:41:57,931 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 277 to 228.
[2024-11-22 06:41:57,933 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 228 states, 163 states have (on average 1.3496932515337423) internal successors, (220), 165 states have internal predecessors, (220), 56 states have call successors, (56), 8 states have call predecessors, (56), 8 states have return successors, (56), 54 states have call predecessors, (56), 56 states have call successors, (56)
[2024-11-22 06:41:57,934 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 228 states to 228 states and 332 transitions.
[2024-11-22 06:41:57,935 INFO  L78                 Accepts]: Start accepts. Automaton has 228 states and 332 transitions. Word has length 164
[2024-11-22 06:41:57,936 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-22 06:41:57,936 INFO  L471      AbstractCegarLoop]: Abstraction has 228 states and 332 transitions.
[2024-11-22 06:41:57,936 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26)
[2024-11-22 06:41:57,936 INFO  L276                IsEmpty]: Start isEmpty. Operand 228 states and 332 transitions.
[2024-11-22 06:41:57,937 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 165
[2024-11-22 06:41:57,938 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-22 06:41:57,938 INFO  L215           NwaCegarLoop]: trace histogram [26, 26, 26, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-22 06:41:57,938 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4
[2024-11-22 06:41:57,938 INFO  L396      AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-22 06:41:57,939 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-22 06:41:57,940 INFO  L85        PathProgramCache]: Analyzing trace with hash 209525813, now seen corresponding path program 1 times
[2024-11-22 06:41:57,940 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-22 06:41:57,940 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [961214500]
[2024-11-22 06:41:57,940 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-22 06:41:57,940 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-22 06:41:57,980 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-22 06:42:11,622 INFO  L134       CoverageAnalysis]: Checked inductivity of 1300 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked.
[2024-11-22 06:42:11,622 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-22 06:42:11,623 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [961214500]
[2024-11-22 06:42:11,623 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [961214500] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-22 06:42:11,623 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-22 06:42:11,623 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15
[2024-11-22 06:42:11,623 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [79097327]
[2024-11-22 06:42:11,623 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-22 06:42:11,624 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 15 states
[2024-11-22 06:42:11,624 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-22 06:42:11,624 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants.
[2024-11-22 06:42:11,625 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=152, Unknown=0, NotChecked=0, Total=210
[2024-11-22 06:42:11,625 INFO  L87              Difference]: Start difference. First operand 228 states and 332 transitions. Second operand  has 15 states, 15 states have (on average 2.466666666666667) internal successors, (37), 15 states have internal predecessors, (37), 2 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26)
[2024-11-22 06:42:14,859 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-22 06:42:14,860 INFO  L93              Difference]: Finished difference Result 283 states and 397 transitions.
[2024-11-22 06:42:14,860 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. 
[2024-11-22 06:42:14,860 INFO  L78                 Accepts]: Start accepts. Automaton has  has 15 states, 15 states have (on average 2.466666666666667) internal successors, (37), 15 states have internal predecessors, (37), 2 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) Word has length 164
[2024-11-22 06:42:14,861 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-22 06:42:14,865 INFO  L225             Difference]: With dead ends: 283
[2024-11-22 06:42:14,865 INFO  L226             Difference]: Without dead ends: 281
[2024-11-22 06:42:14,865 INFO  L431           NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=181, Invalid=371, Unknown=0, NotChecked=0, Total=552
[2024-11-22 06:42:14,866 INFO  L432           NwaCegarLoop]: 110 mSDtfsCounter, 193 mSDsluCounter, 498 mSDsCounter, 0 mSdLazyCounter, 617 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 193 SdHoareTripleChecker+Valid, 608 SdHoareTripleChecker+Invalid, 645 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 617 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time
[2024-11-22 06:42:14,866 INFO  L433           NwaCegarLoop]: SdHoareTripleChecker [193 Valid, 608 Invalid, 645 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 617 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time]
[2024-11-22 06:42:14,867 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 281 states.
[2024-11-22 06:42:14,895 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 281 to 237.
[2024-11-22 06:42:14,896 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 237 states, 172 states have (on average 1.3488372093023255) internal successors, (232), 174 states have internal predecessors, (232), 56 states have call successors, (56), 8 states have call predecessors, (56), 8 states have return successors, (56), 54 states have call predecessors, (56), 56 states have call successors, (56)
[2024-11-22 06:42:14,897 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 237 states to 237 states and 344 transitions.
[2024-11-22 06:42:14,897 INFO  L78                 Accepts]: Start accepts. Automaton has 237 states and 344 transitions. Word has length 164
[2024-11-22 06:42:14,898 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-22 06:42:14,898 INFO  L471      AbstractCegarLoop]: Abstraction has 237 states and 344 transitions.
[2024-11-22 06:42:14,898 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 15 states, 15 states have (on average 2.466666666666667) internal successors, (37), 15 states have internal predecessors, (37), 2 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26)
[2024-11-22 06:42:14,898 INFO  L276                IsEmpty]: Start isEmpty. Operand 237 states and 344 transitions.
[2024-11-22 06:42:14,899 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 165
[2024-11-22 06:42:14,899 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-22 06:42:14,899 INFO  L215           NwaCegarLoop]: trace histogram [26, 26, 26, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-22 06:42:14,900 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5
[2024-11-22 06:42:14,900 INFO  L396      AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-22 06:42:14,900 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-22 06:42:14,900 INFO  L85        PathProgramCache]: Analyzing trace with hash -599820813, now seen corresponding path program 1 times
[2024-11-22 06:42:14,900 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-22 06:42:14,900 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2026786792]
[2024-11-22 06:42:14,900 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-22 06:42:14,901 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-22 06:42:14,933 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-22 06:42:30,363 WARN  L286               SmtUtils]: Spent 6.02s on a formula simplification. DAG size of input: 187 DAG size of output: 174 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)
[2024-11-22 06:42:42,364 INFO  L134       CoverageAnalysis]: Checked inductivity of 1300 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked.
[2024-11-22 06:42:42,364 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-22 06:42:42,364 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2026786792]
[2024-11-22 06:42:42,364 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2026786792] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-22 06:42:42,364 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-22 06:42:42,364 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14
[2024-11-22 06:42:42,364 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [260984487]
[2024-11-22 06:42:42,365 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-22 06:42:42,365 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 14 states
[2024-11-22 06:42:42,365 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-22 06:42:42,365 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants.
[2024-11-22 06:42:42,366 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=128, Unknown=0, NotChecked=0, Total=182
[2024-11-22 06:42:42,366 INFO  L87              Difference]: Start difference. First operand 237 states and 344 transitions. Second operand  has 14 states, 14 states have (on average 2.642857142857143) internal successors, (37), 14 states have internal predecessors, (37), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26)
[2024-11-22 06:42:46,221 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-22 06:42:46,221 INFO  L93              Difference]: Finished difference Result 278 states and 392 transitions.
[2024-11-22 06:42:46,221 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. 
[2024-11-22 06:42:46,222 INFO  L78                 Accepts]: Start accepts. Automaton has  has 14 states, 14 states have (on average 2.642857142857143) internal successors, (37), 14 states have internal predecessors, (37), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) Word has length 164
[2024-11-22 06:42:46,222 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-22 06:42:46,223 INFO  L225             Difference]: With dead ends: 278
[2024-11-22 06:42:46,224 INFO  L226             Difference]: Without dead ends: 276
[2024-11-22 06:42:46,224 INFO  L431           NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 13.7s TimeCoverageRelationStatistics Valid=108, Invalid=198, Unknown=0, NotChecked=0, Total=306
[2024-11-22 06:42:46,225 INFO  L432           NwaCegarLoop]: 117 mSDtfsCounter, 193 mSDsluCounter, 456 mSDsCounter, 0 mSdLazyCounter, 429 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 193 SdHoareTripleChecker+Valid, 573 SdHoareTripleChecker+Invalid, 433 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 429 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time
[2024-11-22 06:42:46,225 INFO  L433           NwaCegarLoop]: SdHoareTripleChecker [193 Valid, 573 Invalid, 433 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 429 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time]
[2024-11-22 06:42:46,225 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 276 states.
[2024-11-22 06:42:46,251 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 276 to 237.
[2024-11-22 06:42:46,252 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 237 states, 172 states have (on average 1.3488372093023255) internal successors, (232), 174 states have internal predecessors, (232), 56 states have call successors, (56), 8 states have call predecessors, (56), 8 states have return successors, (56), 54 states have call predecessors, (56), 56 states have call successors, (56)
[2024-11-22 06:42:46,253 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 237 states to 237 states and 344 transitions.
[2024-11-22 06:42:46,253 INFO  L78                 Accepts]: Start accepts. Automaton has 237 states and 344 transitions. Word has length 164
[2024-11-22 06:42:46,253 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-22 06:42:46,253 INFO  L471      AbstractCegarLoop]: Abstraction has 237 states and 344 transitions.
[2024-11-22 06:42:46,254 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 14 states, 14 states have (on average 2.642857142857143) internal successors, (37), 14 states have internal predecessors, (37), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26)
[2024-11-22 06:42:46,254 INFO  L276                IsEmpty]: Start isEmpty. Operand 237 states and 344 transitions.
[2024-11-22 06:42:46,255 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 166
[2024-11-22 06:42:46,255 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-22 06:42:46,255 INFO  L215           NwaCegarLoop]: trace histogram [26, 26, 26, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-22 06:42:46,255 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6
[2024-11-22 06:42:46,255 INFO  L396      AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-22 06:42:46,256 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-22 06:42:46,256 INFO  L85        PathProgramCache]: Analyzing trace with hash 2002931436, now seen corresponding path program 1 times
[2024-11-22 06:42:46,256 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-22 06:42:46,256 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1804389729]
[2024-11-22 06:42:46,256 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-22 06:42:46,256 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-22 06:42:46,336 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unknown
[2024-11-22 06:42:46,338 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1850710960]
[2024-11-22 06:42:46,338 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-22 06:42:46,338 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-22 06:42:46,338 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2024-11-22 06:42:46,340 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)
[2024-11-22 06:42:46,341 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process
[2024-11-22 06:42:46,414 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-22 06:42:46,416 INFO  L255         TraceCheckSpWp]: Trace formula consists of 370 conjuncts, 29 conjuncts are in the unsatisfiable core
[2024-11-22 06:42:46,424 INFO  L278         TraceCheckSpWp]: Computing forward predicates...
[2024-11-22 06:42:47,184 INFO  L134       CoverageAnalysis]: Checked inductivity of 1300 backedges. 796 proven. 165 refuted. 0 times theorem prover too weak. 339 trivial. 0 not checked.
[2024-11-22 06:42:47,184 INFO  L311         TraceCheckSpWp]: Computing backward predicates...