./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/unreach-call.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loops-crafted-1/iftelse.c --full-output --architecture 32bit


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


Checking for ERROR reachability
Using default analysis
Version 84cfde4a
Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loops-crafted-1/iftelse.c -s /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-clean/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 a98f1431f10d7e60a67a648eec648b7f5eb5616fa0d511e794bbda916609379b
--- Real Ultimate output ---
This is Ultimate 0.2.5-dev-84cfde4
[2024-10-11 01:54:32,556 INFO  L188        SettingsManager]: Resetting all preferences to default values...
[2024-10-11 01:54:32,626 INFO  L114        SettingsManager]: Loading settings from /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf
[2024-10-11 01:54:32,632 WARN  L101        SettingsManager]: Preference file contains the following unknown settings:
[2024-10-11 01:54:32,633 WARN  L103        SettingsManager]:   * de.uni_freiburg.informatik.ultimate.core.Log level for class
[2024-10-11 01:54:32,656 INFO  L130        SettingsManager]: Preferences different from defaults after loading the file:
[2024-10-11 01:54:32,657 INFO  L151        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2024-10-11 01:54:32,657 INFO  L153        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2024-10-11 01:54:32,658 INFO  L151        SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults:
[2024-10-11 01:54:32,661 INFO  L153        SettingsManager]:  * Use memory slicer=true
[2024-10-11 01:54:32,662 INFO  L151        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2024-10-11 01:54:32,662 INFO  L153        SettingsManager]:  * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2024-10-11 01:54:32,662 INFO  L151        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2024-10-11 01:54:32,663 INFO  L153        SettingsManager]:  * Create parallel compositions if possible=false
[2024-10-11 01:54:32,663 INFO  L153        SettingsManager]:  * Use SBE=true
[2024-10-11 01:54:32,663 INFO  L151        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2024-10-11 01:54:32,663 INFO  L153        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2024-10-11 01:54:32,664 INFO  L153        SettingsManager]:  * sizeof long=4
[2024-10-11 01:54:32,664 INFO  L153        SettingsManager]:  * Overapproximate operations on floating types=true
[2024-10-11 01:54:32,664 INFO  L153        SettingsManager]:  * sizeof POINTER=4
[2024-10-11 01:54:32,664 INFO  L153        SettingsManager]:  * Check division by zero=IGNORE
[2024-10-11 01:54:32,665 INFO  L153        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2024-10-11 01:54:32,665 INFO  L153        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2024-10-11 01:54:32,665 INFO  L153        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2024-10-11 01:54:32,666 INFO  L153        SettingsManager]:  * Allow undefined functions=false
[2024-10-11 01:54:32,666 INFO  L153        SettingsManager]:  * sizeof long double=12
[2024-10-11 01:54:32,666 INFO  L153        SettingsManager]:  * Check if freed pointer was valid=false
[2024-10-11 01:54:32,666 INFO  L153        SettingsManager]:  * Use constant arrays=true
[2024-10-11 01:54:32,668 INFO  L151        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2024-10-11 01:54:32,668 INFO  L153        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2024-10-11 01:54:32,668 INFO  L153        SettingsManager]:  * Only consider context switches at boundaries of atomic blocks=true
[2024-10-11 01:54:32,668 INFO  L153        SettingsManager]:  * SMT solver=External_DefaultMode
[2024-10-11 01:54:32,669 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2024-10-11 01:54:32,669 INFO  L151        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2024-10-11 01:54:32,669 INFO  L153        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2024-10-11 01:54:32,669 INFO  L153        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopHeads
[2024-10-11 01:54:32,670 INFO  L153        SettingsManager]:  * Trace refinement strategy=CAMEL
[2024-10-11 01:54:32,670 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2024-10-11 01:54:32,670 INFO  L153        SettingsManager]:  * Apply one-shot large block encoding in concurrent analysis=false
[2024-10-11 01:54:32,670 INFO  L153        SettingsManager]:  * Automaton type used in concurrency analysis=PETRI_NET
[2024-10-11 01:54:32,671 INFO  L153        SettingsManager]:  * Order on configurations for Petri net unfoldings=DBO
[2024-10-11 01:54:32,673 INFO  L153        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2024-10-11 01:54:32,673 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-clean/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-clean/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 -> a98f1431f10d7e60a67a648eec648b7f5eb5616fa0d511e794bbda916609379b
[2024-10-11 01:54:32,940 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2024-10-11 01:54:32,964 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2024-10-11 01:54:32,968 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2024-10-11 01:54:32,969 INFO  L270        PluginConnector]: Initializing CDTParser...
[2024-10-11 01:54:32,970 INFO  L274        PluginConnector]: CDTParser initialized
[2024-10-11 01:54:32,971 INFO  L431   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loops-crafted-1/iftelse.c
[2024-10-11 01:54:34,341 INFO  L533              CDTParser]: Created temporary CDT project at NULL
[2024-10-11 01:54:34,556 INFO  L384              CDTParser]: Found 1 translation units.
[2024-10-11 01:54:34,557 INFO  L180              CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loops-crafted-1/iftelse.c
[2024-10-11 01:54:34,568 INFO  L427              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/04eaf3928/eadddced1b4d495d8a2ec6effb8d93db/FLAG30cae306d
[2024-10-11 01:54:34,588 INFO  L435              CDTParser]: Successfully deleted /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/04eaf3928/eadddced1b4d495d8a2ec6effb8d93db
[2024-10-11 01:54:34,591 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2024-10-11 01:54:34,592 INFO  L133        ToolchainWalker]: Walking toolchain with 6 elements.
[2024-10-11 01:54:34,595 INFO  L112        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2024-10-11 01:54:34,595 INFO  L270        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2024-10-11 01:54:34,601 INFO  L274        PluginConnector]: CACSL2BoogieTranslator initialized
[2024-10-11 01:54:34,602 INFO  L184        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 01:54:34" (1/1) ...
[2024-10-11 01:54:34,603 INFO  L204        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7cf98552 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 01:54:34, skipping insertion in model container
[2024-10-11 01:54:34,603 INFO  L184        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 01:54:34" (1/1) ...
[2024-10-11 01:54:34,623 INFO  L175         MainTranslator]: Built tables and reachable declarations
[2024-10-11 01:54:34,807 WARN  L248   ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loops-crafted-1/iftelse.c[406,419]
[2024-10-11 01:54:34,824 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2024-10-11 01:54:34,835 INFO  L200         MainTranslator]: Completed pre-run
[2024-10-11 01:54:34,847 WARN  L248   ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loops-crafted-1/iftelse.c[406,419]
[2024-10-11 01:54:34,851 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2024-10-11 01:54:34,867 INFO  L204         MainTranslator]: Completed translation
[2024-10-11 01:54:34,868 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 01:54:34 WrapperNode
[2024-10-11 01:54:34,868 INFO  L131        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2024-10-11 01:54:34,869 INFO  L112        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2024-10-11 01:54:34,869 INFO  L270        PluginConnector]: Initializing Boogie Procedure Inliner...
[2024-10-11 01:54:34,869 INFO  L274        PluginConnector]: Boogie Procedure Inliner initialized
[2024-10-11 01:54:34,876 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 01:54:34" (1/1) ...
[2024-10-11 01:54:34,882 INFO  L184        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 01:54:34" (1/1) ...
[2024-10-11 01:54:34,898 INFO  L138                Inliner]: procedures = 14, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 41
[2024-10-11 01:54:34,899 INFO  L131        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2024-10-11 01:54:34,900 INFO  L112        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2024-10-11 01:54:34,900 INFO  L270        PluginConnector]: Initializing Boogie Preprocessor...
[2024-10-11 01:54:34,900 INFO  L274        PluginConnector]: Boogie Preprocessor initialized
[2024-10-11 01:54:34,910 INFO  L184        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 01:54:34" (1/1) ...
[2024-10-11 01:54:34,910 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 01:54:34" (1/1) ...
[2024-10-11 01:54:34,911 INFO  L184        PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 01:54:34" (1/1) ...
[2024-10-11 01:54:34,926 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].
[2024-10-11 01:54:34,927 INFO  L184        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 01:54:34" (1/1) ...
[2024-10-11 01:54:34,927 INFO  L184        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 01:54:34" (1/1) ...
[2024-10-11 01:54:34,931 INFO  L184        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 01:54:34" (1/1) ...
[2024-10-11 01:54:34,934 INFO  L184        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 01:54:34" (1/1) ...
[2024-10-11 01:54:34,935 INFO  L184        PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 01:54:34" (1/1) ...
[2024-10-11 01:54:34,938 INFO  L184        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 01:54:34" (1/1) ...
[2024-10-11 01:54:34,943 INFO  L131        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2024-10-11 01:54:34,944 INFO  L112        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2024-10-11 01:54:34,944 INFO  L270        PluginConnector]: Initializing RCFGBuilder...
[2024-10-11 01:54:34,944 INFO  L274        PluginConnector]: RCFGBuilder initialized
[2024-10-11 01:54:34,945 INFO  L184        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 01:54:34" (1/1) ...
[2024-10-11 01:54:34,951 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2024-10-11 01:54:34,962 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3
[2024-10-11 01:54:34,979 INFO  L229       MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null)
[2024-10-11 01:54:34,985 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process
[2024-10-11 01:54:35,022 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2024-10-11 01:54:35,022 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int#0
[2024-10-11 01:54:35,023 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2024-10-11 01:54:35,023 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2024-10-11 01:54:35,077 INFO  L238             CfgBuilder]: Building ICFG
[2024-10-11 01:54:35,081 INFO  L264             CfgBuilder]: Building CFG for each procedure with an implementation
[2024-10-11 01:54:35,307 INFO  L?                        ?]: Removed 8 outVars from TransFormulas that were not future-live.
[2024-10-11 01:54:35,307 INFO  L287             CfgBuilder]: Performing block encoding
[2024-10-11 01:54:35,331 INFO  L309             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2024-10-11 01:54:35,332 INFO  L314             CfgBuilder]: Removed 1 assume(true) statements.
[2024-10-11 01:54:35,333 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 01:54:35 BoogieIcfgContainer
[2024-10-11 01:54:35,333 INFO  L131        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2024-10-11 01:54:35,336 INFO  L112        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2024-10-11 01:54:35,337 INFO  L270        PluginConnector]: Initializing TraceAbstraction...
[2024-10-11 01:54:35,340 INFO  L274        PluginConnector]: TraceAbstraction initialized
[2024-10-11 01:54:35,340 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 01:54:34" (1/3) ...
[2024-10-11 01:54:35,341 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@df1a000 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 01:54:35, skipping insertion in model container
[2024-10-11 01:54:35,341 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 01:54:34" (2/3) ...
[2024-10-11 01:54:35,342 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@df1a000 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 01:54:35, skipping insertion in model container
[2024-10-11 01:54:35,342 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 01:54:35" (3/3) ...
[2024-10-11 01:54:35,344 INFO  L112   eAbstractionObserver]: Analyzing ICFG iftelse.c
[2024-10-11 01:54:35,363 INFO  L209   ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2024-10-11 01:54:35,363 INFO  L149   ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2024-10-11 01:54:35,421 INFO  L332      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2024-10-11 01:54:35,427 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;@68bbbef2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2024-10-11 01:54:35,428 INFO  L334      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2024-10-11 01:54:35,431 INFO  L276                IsEmpty]: Start isEmpty. Operand  has 12 states, 10 states have (on average 1.7) internal successors, (17), 11 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-10-11 01:54:35,436 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 8
[2024-10-11 01:54:35,437 INFO  L207           NwaCegarLoop]: Found error trace
[2024-10-11 01:54:35,437 INFO  L215           NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1]
[2024-10-11 01:54:35,438 INFO  L396      AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-10-11 01:54:35,442 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-10-11 01:54:35,443 INFO  L85        PathProgramCache]: Analyzing trace with hash 721581727, now seen corresponding path program 1 times
[2024-10-11 01:54:35,450 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-10-11 01:54:35,451 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1076546108]
[2024-10-11 01:54:35,451 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-10-11 01:54:35,451 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-10-11 01:54:35,578 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-10-11 01:54:36,328 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-10-11 01:54:36,329 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-10-11 01:54:36,330 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1076546108]
[2024-10-11 01:54:36,330 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1076546108] provided 1 perfect and 0 imperfect interpolant sequences
[2024-10-11 01:54:36,331 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-10-11 01:54:36,331 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2024-10-11 01:54:36,332 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [552004283]
[2024-10-11 01:54:36,333 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-10-11 01:54:36,337 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2024-10-11 01:54:36,337 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-10-11 01:54:36,357 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2024-10-11 01:54:36,358 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30
[2024-10-11 01:54:36,360 INFO  L87              Difference]: Start difference. First operand  has 12 states, 10 states have (on average 1.7) internal successors, (17), 11 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand  has 6 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 6 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-10-11 01:54:36,494 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-10-11 01:54:36,495 INFO  L93              Difference]: Finished difference Result 28 states and 44 transitions.
[2024-10-11 01:54:36,496 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2024-10-11 01:54:36,497 INFO  L78                 Accepts]: Start accepts. Automaton has  has 6 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 6 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7
[2024-10-11 01:54:36,498 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-10-11 01:54:36,504 INFO  L225             Difference]: With dead ends: 28
[2024-10-11 01:54:36,504 INFO  L226             Difference]: Without dead ends: 15
[2024-10-11 01:54:36,507 INFO  L431           NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42
[2024-10-11 01:54:36,513 INFO  L432           NwaCegarLoop]: 8 mSDtfsCounter, 4 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2024-10-11 01:54:36,514 INFO  L433           NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 33 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2024-10-11 01:54:36,530 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 15 states.
[2024-10-11 01:54:36,540 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 13.
[2024-10-11 01:54:36,541 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 13 states, 12 states have (on average 1.3333333333333333) internal successors, (16), 12 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-10-11 01:54:36,542 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 16 transitions.
[2024-10-11 01:54:36,543 INFO  L78                 Accepts]: Start accepts. Automaton has 13 states and 16 transitions. Word has length 7
[2024-10-11 01:54:36,544 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-10-11 01:54:36,544 INFO  L471      AbstractCegarLoop]: Abstraction has 13 states and 16 transitions.
[2024-10-11 01:54:36,544 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 6 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 6 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-10-11 01:54:36,544 INFO  L276                IsEmpty]: Start isEmpty. Operand 13 states and 16 transitions.
[2024-10-11 01:54:36,545 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 11
[2024-10-11 01:54:36,545 INFO  L207           NwaCegarLoop]: Found error trace
[2024-10-11 01:54:36,545 INFO  L215           NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1]
[2024-10-11 01:54:36,545 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2024-10-11 01:54:36,545 INFO  L396      AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-10-11 01:54:36,546 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-10-11 01:54:36,546 INFO  L85        PathProgramCache]: Analyzing trace with hash 690706510, now seen corresponding path program 1 times
[2024-10-11 01:54:36,546 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-10-11 01:54:36,546 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2008801161]
[2024-10-11 01:54:36,546 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-10-11 01:54:36,546 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-10-11 01:54:36,563 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-10-11 01:54:36,599 INFO  L134       CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-10-11 01:54:36,600 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-10-11 01:54:36,600 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2008801161]
[2024-10-11 01:54:36,600 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2008801161] provided 1 perfect and 0 imperfect interpolant sequences
[2024-10-11 01:54:36,601 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-10-11 01:54:36,601 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2024-10-11 01:54:36,601 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1813259949]
[2024-10-11 01:54:36,601 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-10-11 01:54:36,602 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2024-10-11 01:54:36,603 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-10-11 01:54:36,603 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2024-10-11 01:54:36,604 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2024-10-11 01:54:36,605 INFO  L87              Difference]: Start difference. First operand 13 states and 16 transitions. Second operand  has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-10-11 01:54:36,617 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-10-11 01:54:36,618 INFO  L93              Difference]: Finished difference Result 21 states and 26 transitions.
[2024-10-11 01:54:36,619 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2024-10-11 01:54:36,619 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10
[2024-10-11 01:54:36,620 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-10-11 01:54:36,620 INFO  L225             Difference]: With dead ends: 21
[2024-10-11 01:54:36,620 INFO  L226             Difference]: Without dead ends: 13
[2024-10-11 01:54:36,621 INFO  L431           NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2024-10-11 01:54:36,624 INFO  L432           NwaCegarLoop]: 10 mSDtfsCounter, 0 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2024-10-11 01:54:36,624 INFO  L433           NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 16 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2024-10-11 01:54:36,625 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 13 states.
[2024-10-11 01:54:36,627 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13.
[2024-10-11 01:54:36,628 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 13 states, 12 states have (on average 1.1666666666666667) internal successors, (14), 12 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-10-11 01:54:36,628 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 14 transitions.
[2024-10-11 01:54:36,628 INFO  L78                 Accepts]: Start accepts. Automaton has 13 states and 14 transitions. Word has length 10
[2024-10-11 01:54:36,628 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-10-11 01:54:36,629 INFO  L471      AbstractCegarLoop]: Abstraction has 13 states and 14 transitions.
[2024-10-11 01:54:36,629 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-10-11 01:54:36,629 INFO  L276                IsEmpty]: Start isEmpty. Operand 13 states and 14 transitions.
[2024-10-11 01:54:36,629 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 13
[2024-10-11 01:54:36,629 INFO  L207           NwaCegarLoop]: Found error trace
[2024-10-11 01:54:36,629 INFO  L215           NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1]
[2024-10-11 01:54:36,629 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2024-10-11 01:54:36,630 INFO  L396      AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-10-11 01:54:36,633 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-10-11 01:54:36,633 INFO  L85        PathProgramCache]: Analyzing trace with hash -451900104, now seen corresponding path program 1 times
[2024-10-11 01:54:36,633 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-10-11 01:54:36,633 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [140140978]
[2024-10-11 01:54:36,634 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-10-11 01:54:36,634 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-10-11 01:54:36,651 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-10-11 01:54:36,840 INFO  L134       CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-10-11 01:54:36,841 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-10-11 01:54:36,841 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [140140978]
[2024-10-11 01:54:36,841 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [140140978] provided 0 perfect and 1 imperfect interpolant sequences
[2024-10-11 01:54:36,841 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2020349597]
[2024-10-11 01:54:36,841 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-10-11 01:54:36,842 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-10-11 01:54:36,842 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3
[2024-10-11 01:54:36,844 INFO  L229       MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-10-11 01:54:36,849 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process
[2024-10-11 01:54:36,906 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-10-11 01:54:36,910 INFO  L255         TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 11 conjuncts are in the unsatisfiable core
[2024-10-11 01:54:36,915 INFO  L278         TraceCheckSpWp]: Computing forward predicates...
[2024-10-11 01:54:36,960 INFO  L134       CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-10-11 01:54:36,960 INFO  L311         TraceCheckSpWp]: Computing backward predicates...
[2024-10-11 01:54:37,006 INFO  L134       CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-10-11 01:54:37,007 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [2020349597] provided 0 perfect and 2 imperfect interpolant sequences
[2024-10-11 01:54:37,007 INFO  L185   FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2024-10-11 01:54:37,007 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 4] total 8
[2024-10-11 01:54:37,007 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1376903923]
[2024-10-11 01:54:37,008 INFO  L85    oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2024-10-11 01:54:37,009 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 8 states
[2024-10-11 01:54:37,009 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-10-11 01:54:37,009 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2024-10-11 01:54:37,010 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56
[2024-10-11 01:54:37,010 INFO  L87              Difference]: Start difference. First operand 13 states and 14 transitions. Second operand  has 8 states, 8 states have (on average 2.75) internal successors, (22), 8 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-10-11 01:54:37,058 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-10-11 01:54:37,060 INFO  L93              Difference]: Finished difference Result 36 states and 40 transitions.
[2024-10-11 01:54:37,061 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. 
[2024-10-11 01:54:37,061 INFO  L78                 Accepts]: Start accepts. Automaton has  has 8 states, 8 states have (on average 2.75) internal successors, (22), 8 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12
[2024-10-11 01:54:37,061 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-10-11 01:54:37,062 INFO  L225             Difference]: With dead ends: 36
[2024-10-11 01:54:37,062 INFO  L226             Difference]: Without dead ends: 29
[2024-10-11 01:54:37,062 INFO  L431           NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56
[2024-10-11 01:54:37,065 INFO  L432           NwaCegarLoop]: 9 mSDtfsCounter, 20 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2024-10-11 01:54:37,065 INFO  L433           NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 33 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2024-10-11 01:54:37,067 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 29 states.
[2024-10-11 01:54:37,071 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 18.
[2024-10-11 01:54:37,072 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 18 states, 17 states have (on average 1.1176470588235294) internal successors, (19), 17 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-10-11 01:54:37,073 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 19 transitions.
[2024-10-11 01:54:37,073 INFO  L78                 Accepts]: Start accepts. Automaton has 18 states and 19 transitions. Word has length 12
[2024-10-11 01:54:37,073 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-10-11 01:54:37,074 INFO  L471      AbstractCegarLoop]: Abstraction has 18 states and 19 transitions.
[2024-10-11 01:54:37,074 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 8 states, 8 states have (on average 2.75) internal successors, (22), 8 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-10-11 01:54:37,074 INFO  L276                IsEmpty]: Start isEmpty. Operand 18 states and 19 transitions.
[2024-10-11 01:54:37,075 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 13
[2024-10-11 01:54:37,075 INFO  L207           NwaCegarLoop]: Found error trace
[2024-10-11 01:54:37,075 INFO  L215           NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-10-11 01:54:37,092 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0
[2024-10-11 01:54:37,276 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-10-11 01:54:37,276 INFO  L396      AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-10-11 01:54:37,277 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-10-11 01:54:37,277 INFO  L85        PathProgramCache]: Analyzing trace with hash -451840522, now seen corresponding path program 1 times
[2024-10-11 01:54:37,278 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-10-11 01:54:37,278 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [452931239]
[2024-10-11 01:54:37,278 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-10-11 01:54:37,278 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-10-11 01:54:37,301 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-10-11 01:54:37,617 INFO  L134       CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-10-11 01:54:37,617 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-10-11 01:54:37,617 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [452931239]
[2024-10-11 01:54:37,618 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [452931239] provided 0 perfect and 1 imperfect interpolant sequences
[2024-10-11 01:54:37,618 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1978432018]
[2024-10-11 01:54:37,618 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-10-11 01:54:37,618 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-10-11 01:54:37,618 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3
[2024-10-11 01:54:37,620 INFO  L229       MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-10-11 01:54:37,622 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process
[2024-10-11 01:54:37,667 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-10-11 01:54:37,671 INFO  L255         TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 15 conjuncts are in the unsatisfiable core
[2024-10-11 01:54:37,673 INFO  L278         TraceCheckSpWp]: Computing forward predicates...
[2024-10-11 01:54:37,866 INFO  L134       CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-10-11 01:54:37,867 INFO  L311         TraceCheckSpWp]: Computing backward predicates...
[2024-10-11 01:54:38,002 INFO  L134       CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-10-11 01:54:38,003 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1978432018] provided 0 perfect and 2 imperfect interpolant sequences
[2024-10-11 01:54:38,003 INFO  L185   FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2024-10-11 01:54:38,003 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 14
[2024-10-11 01:54:38,003 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [777405068]
[2024-10-11 01:54:38,004 INFO  L85    oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2024-10-11 01:54:38,004 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 14 states
[2024-10-11 01:54:38,004 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-10-11 01:54:38,005 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants.
[2024-10-11 01:54:38,005 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182
[2024-10-11 01:54:38,006 INFO  L87              Difference]: Start difference. First operand 18 states and 19 transitions. Second operand  has 14 states, 14 states have (on average 2.0714285714285716) internal successors, (29), 14 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-10-11 01:54:38,759 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-10-11 01:54:38,759 INFO  L93              Difference]: Finished difference Result 39 states and 41 transitions.
[2024-10-11 01:54:38,759 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. 
[2024-10-11 01:54:38,760 INFO  L78                 Accepts]: Start accepts. Automaton has  has 14 states, 14 states have (on average 2.0714285714285716) internal successors, (29), 14 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12
[2024-10-11 01:54:38,760 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-10-11 01:54:38,761 INFO  L225             Difference]: With dead ends: 39
[2024-10-11 01:54:38,761 INFO  L226             Difference]: Without dead ends: 37
[2024-10-11 01:54:38,762 INFO  L431           NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 16 SyntacticMatches, 2 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=72, Invalid=200, Unknown=0, NotChecked=0, Total=272
[2024-10-11 01:54:38,763 INFO  L432           NwaCegarLoop]: 5 mSDtfsCounter, 20 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time
[2024-10-11 01:54:38,763 INFO  L433           NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 37 Invalid, 100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time]
[2024-10-11 01:54:38,764 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 37 states.
[2024-10-11 01:54:38,770 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 33.
[2024-10-11 01:54:38,770 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 33 states, 32 states have (on average 1.09375) internal successors, (35), 32 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-10-11 01:54:38,771 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 35 transitions.
[2024-10-11 01:54:38,772 INFO  L78                 Accepts]: Start accepts. Automaton has 33 states and 35 transitions. Word has length 12
[2024-10-11 01:54:38,772 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-10-11 01:54:38,772 INFO  L471      AbstractCegarLoop]: Abstraction has 33 states and 35 transitions.
[2024-10-11 01:54:38,772 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 14 states, 14 states have (on average 2.0714285714285716) internal successors, (29), 14 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-10-11 01:54:38,773 INFO  L276                IsEmpty]: Start isEmpty. Operand 33 states and 35 transitions.
[2024-10-11 01:54:38,773 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 18
[2024-10-11 01:54:38,773 INFO  L207           NwaCegarLoop]: Found error trace
[2024-10-11 01:54:38,773 INFO  L215           NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1]
[2024-10-11 01:54:38,790 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0
[2024-10-11 01:54:38,977 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-10-11 01:54:38,979 INFO  L396      AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-10-11 01:54:38,979 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-10-11 01:54:38,980 INFO  L85        PathProgramCache]: Analyzing trace with hash -67204031, now seen corresponding path program 2 times
[2024-10-11 01:54:38,980 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-10-11 01:54:38,981 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1210804840]
[2024-10-11 01:54:38,981 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-10-11 01:54:38,982 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-10-11 01:54:39,014 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-10-11 01:54:39,319 INFO  L134       CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-10-11 01:54:39,319 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-10-11 01:54:39,319 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1210804840]
[2024-10-11 01:54:39,320 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1210804840] provided 0 perfect and 1 imperfect interpolant sequences
[2024-10-11 01:54:39,320 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2137550409]
[2024-10-11 01:54:39,320 INFO  L93    rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
[2024-10-11 01:54:39,320 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-10-11 01:54:39,320 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3
[2024-10-11 01:54:39,324 INFO  L229       MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-10-11 01:54:39,325 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process
[2024-10-11 01:54:39,382 INFO  L228   tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2024-10-11 01:54:39,382 INFO  L229   tOrderPrioritization]: Conjunction of SSA is unsat
[2024-10-11 01:54:39,383 INFO  L255         TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 25 conjuncts are in the unsatisfiable core
[2024-10-11 01:54:39,386 INFO  L278         TraceCheckSpWp]: Computing forward predicates...
[2024-10-11 01:54:39,574 INFO  L134       CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-10-11 01:54:39,574 INFO  L311         TraceCheckSpWp]: Computing backward predicates...
[2024-10-11 01:54:40,221 INFO  L134       CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-10-11 01:54:40,221 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [2137550409] provided 0 perfect and 2 imperfect interpolant sequences
[2024-10-11 01:54:40,221 INFO  L185   FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2024-10-11 01:54:40,222 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10, 11] total 20
[2024-10-11 01:54:40,222 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1955715323]
[2024-10-11 01:54:40,222 INFO  L85    oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2024-10-11 01:54:40,223 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 20 states
[2024-10-11 01:54:40,223 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-10-11 01:54:40,223 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants.
[2024-10-11 01:54:40,224 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=280, Unknown=0, NotChecked=0, Total=380
[2024-10-11 01:54:40,224 INFO  L87              Difference]: Start difference. First operand 33 states and 35 transitions. Second operand  has 20 states, 20 states have (on average 1.8) internal successors, (36), 20 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-10-11 01:54:58,520 WARN  L286               SmtUtils]: Spent 10.60s on a formula simplification. DAG size of input: 50 DAG size of output: 45 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)
[2024-10-11 01:55:28,579 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-10-11 01:55:28,580 INFO  L93              Difference]: Finished difference Result 56 states and 58 transitions.
[2024-10-11 01:55:28,580 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. 
[2024-10-11 01:55:28,581 INFO  L78                 Accepts]: Start accepts. Automaton has  has 20 states, 20 states have (on average 1.8) internal successors, (36), 20 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17
[2024-10-11 01:55:28,581 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-10-11 01:55:28,582 INFO  L225             Difference]: With dead ends: 56
[2024-10-11 01:55:28,582 INFO  L226             Difference]: Without dead ends: 54
[2024-10-11 01:55:28,583 INFO  L431           NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 21 SyntacticMatches, 2 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 217 ImplicationChecksByTransitivity, 47.2s TimeCoverageRelationStatistics Valid=337, Invalid=785, Unknown=0, NotChecked=0, Total=1122
[2024-10-11 01:55:28,584 INFO  L432           NwaCegarLoop]: 8 mSDtfsCounter, 96 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 168 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 66 SdHoareTripleChecker+Invalid, 185 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 168 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time
[2024-10-11 01:55:28,584 INFO  L433           NwaCegarLoop]: SdHoareTripleChecker [96 Valid, 66 Invalid, 185 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 168 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time]
[2024-10-11 01:55:28,585 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 54 states.
[2024-10-11 01:55:28,591 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 48.
[2024-10-11 01:55:28,591 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 48 states, 47 states have (on average 1.0638297872340425) internal successors, (50), 47 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-10-11 01:55:28,592 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 50 transitions.
[2024-10-11 01:55:28,592 INFO  L78                 Accepts]: Start accepts. Automaton has 48 states and 50 transitions. Word has length 17
[2024-10-11 01:55:28,593 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-10-11 01:55:28,593 INFO  L471      AbstractCegarLoop]: Abstraction has 48 states and 50 transitions.
[2024-10-11 01:55:28,593 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 20 states, 20 states have (on average 1.8) internal successors, (36), 20 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-10-11 01:55:28,593 INFO  L276                IsEmpty]: Start isEmpty. Operand 48 states and 50 transitions.
[2024-10-11 01:55:28,594 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 33
[2024-10-11 01:55:28,597 INFO  L207           NwaCegarLoop]: Found error trace
[2024-10-11 01:55:28,597 INFO  L215           NwaCegarLoop]: trace histogram [6, 6, 5, 5, 3, 3, 1, 1, 1, 1]
[2024-10-11 01:55:28,612 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0
[2024-10-11 01:55:28,797 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-10-11 01:55:28,798 INFO  L396      AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-10-11 01:55:28,798 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-10-11 01:55:28,798 INFO  L85        PathProgramCache]: Analyzing trace with hash -1999550542, now seen corresponding path program 3 times
[2024-10-11 01:55:28,799 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-10-11 01:55:28,799 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1886473606]
[2024-10-11 01:55:28,799 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-10-11 01:55:28,799 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-10-11 01:55:28,854 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-10-11 01:55:29,428 INFO  L134       CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-10-11 01:55:29,428 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-10-11 01:55:29,428 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1886473606]
[2024-10-11 01:55:29,429 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1886473606] provided 0 perfect and 1 imperfect interpolant sequences
[2024-10-11 01:55:29,429 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2134701813]
[2024-10-11 01:55:29,429 INFO  L93    rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2
[2024-10-11 01:55:29,430 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-10-11 01:55:29,430 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3
[2024-10-11 01:55:29,432 INFO  L229       MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-10-11 01:55:29,434 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process
[2024-10-11 01:55:31,062 INFO  L228   tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s)
[2024-10-11 01:55:31,062 INFO  L229   tOrderPrioritization]: Conjunction of SSA is unsat
[2024-10-11 01:55:31,063 INFO  L255         TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 38 conjuncts are in the unsatisfiable core
[2024-10-11 01:55:31,066 INFO  L278         TraceCheckSpWp]: Computing forward predicates...
[2024-10-11 01:55:36,914 INFO  L134       CoverageAnalysis]: Checked inductivity of 70 backedges. 14 proven. 43 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked.
[2024-10-11 01:55:36,914 INFO  L311         TraceCheckSpWp]: Computing backward predicates...