./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/bitvector/sum02-2.c --full-output --architecture 32bit


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


Checking for ERROR reachability
Using default analysis
Version 551b0097
Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/bitvector/sum02-2.c -s /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-jdk21/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 80bce81184682208d15520c2d0ae5d9c5f1236c4de557bfddd91c6f88a04aad8
--- Real Ultimate output ---
This is Ultimate 0.3.0-?-551b009-m
[2025-01-08 22:48:45,815 INFO  L188        SettingsManager]: Resetting all preferences to default values...
[2025-01-08 22:48:45,868 INFO  L114        SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf
[2025-01-08 22:48:45,874 WARN  L101        SettingsManager]: Preference file contains the following unknown settings:
[2025-01-08 22:48:45,876 WARN  L103        SettingsManager]:   * de.uni_freiburg.informatik.ultimate.core.Log level for class
[2025-01-08 22:48:45,897 INFO  L130        SettingsManager]: Preferences different from defaults after loading the file:
[2025-01-08 22:48:45,897 INFO  L151        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2025-01-08 22:48:45,897 INFO  L153        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2025-01-08 22:48:45,898 INFO  L151        SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults:
[2025-01-08 22:48:45,898 INFO  L153        SettingsManager]:  * Use memory slicer=true
[2025-01-08 22:48:45,899 INFO  L151        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2025-01-08 22:48:45,899 INFO  L153        SettingsManager]:  * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2025-01-08 22:48:45,899 INFO  L151        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2025-01-08 22:48:45,900 INFO  L153        SettingsManager]:  * Create parallel compositions if possible=false
[2025-01-08 22:48:45,900 INFO  L153        SettingsManager]:  * Use SBE=true
[2025-01-08 22:48:45,900 INFO  L151        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2025-01-08 22:48:45,900 INFO  L153        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2025-01-08 22:48:45,900 INFO  L153        SettingsManager]:  * sizeof long=4
[2025-01-08 22:48:45,900 INFO  L153        SettingsManager]:  * Overapproximate operations on floating types=true
[2025-01-08 22:48:45,900 INFO  L153        SettingsManager]:  * sizeof POINTER=4
[2025-01-08 22:48:45,900 INFO  L153        SettingsManager]:  * Check division by zero=IGNORE
[2025-01-08 22:48:45,900 INFO  L153        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2025-01-08 22:48:45,900 INFO  L153        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2025-01-08 22:48:45,901 INFO  L153        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2025-01-08 22:48:45,901 INFO  L153        SettingsManager]:  * sizeof long double=12
[2025-01-08 22:48:45,901 INFO  L153        SettingsManager]:  * Check if freed pointer was valid=false
[2025-01-08 22:48:45,901 INFO  L153        SettingsManager]:  * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR
[2025-01-08 22:48:45,901 INFO  L153        SettingsManager]:  * Use constant arrays=true
[2025-01-08 22:48:45,901 INFO  L151        SettingsManager]: Preferences of IcfgBuilder differ from their defaults:
[2025-01-08 22:48:45,901 INFO  L153        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2025-01-08 22:48:45,901 INFO  L153        SettingsManager]:  * Only consider context switches at boundaries of atomic blocks=true
[2025-01-08 22:48:45,901 INFO  L153        SettingsManager]:  * SMT solver=External_DefaultMode
[2025-01-08 22:48:45,901 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2025-01-08 22:48:45,901 INFO  L151        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2025-01-08 22:48:45,901 INFO  L153        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2025-01-08 22:48:45,901 INFO  L153        SettingsManager]:  * Only consider context switches at boundaries of atomic blocks=true
[2025-01-08 22:48:45,901 INFO  L153        SettingsManager]:  * SMT solver=External_DefaultMode
[2025-01-08 22:48:45,901 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2025-01-08 22:48:45,902 INFO  L151        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2025-01-08 22:48:45,902 INFO  L153        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2025-01-08 22:48:45,902 INFO  L153        SettingsManager]:  * Compute procedure contracts=false
[2025-01-08 22:48:45,902 INFO  L153        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopHeads
[2025-01-08 22:48:45,902 INFO  L153        SettingsManager]:  * Trace refinement strategy=CAMEL
[2025-01-08 22:48:45,902 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2025-01-08 22:48:45,902 INFO  L153        SettingsManager]:  * Apply one-shot large block encoding in concurrent analysis=false
[2025-01-08 22:48:45,902 INFO  L153        SettingsManager]:  * Automaton type used in concurrency analysis=PETRI_NET
[2025-01-08 22:48:45,902 INFO  L153        SettingsManager]:  * Order on configurations for Petri net unfoldings=DBO
[2025-01-08 22:48:45,902 INFO  L153        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2025-01-08 22:48:45,902 INFO  L153        SettingsManager]:  * Looper check in Petri net analysis=SEMANTIC
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-jdk21/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 -> 80bce81184682208d15520c2d0ae5d9c5f1236c4de557bfddd91c6f88a04aad8
[2025-01-08 22:48:46,145 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2025-01-08 22:48:46,150 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2025-01-08 22:48:46,151 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2025-01-08 22:48:46,152 INFO  L270        PluginConnector]: Initializing CDTParser...
[2025-01-08 22:48:46,152 INFO  L274        PluginConnector]: CDTParser initialized
[2025-01-08 22:48:46,155 INFO  L431   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/bitvector/sum02-2.c
[2025-01-08 22:48:47,306 INFO  L533              CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/0269c646f/83abe62ff73042b4819b017dfd9187ed/FLAG8012f64eb
[2025-01-08 22:48:47,519 INFO  L384              CDTParser]: Found 1 translation units.
[2025-01-08 22:48:47,519 INFO  L180              CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/bitvector/sum02-2.c
[2025-01-08 22:48:47,525 INFO  L427              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/0269c646f/83abe62ff73042b4819b017dfd9187ed/FLAG8012f64eb
[2025-01-08 22:48:47,536 INFO  L435              CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/0269c646f/83abe62ff73042b4819b017dfd9187ed
[2025-01-08 22:48:47,538 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2025-01-08 22:48:47,539 INFO  L133        ToolchainWalker]: Walking toolchain with 6 elements.
[2025-01-08 22:48:47,540 INFO  L112        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2025-01-08 22:48:47,540 INFO  L270        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2025-01-08 22:48:47,543 INFO  L274        PluginConnector]: CACSL2BoogieTranslator initialized
[2025-01-08 22:48:47,543 INFO  L184        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.01 10:48:47" (1/1) ...
[2025-01-08 22:48:47,544 INFO  L204        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@76ce49fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.01 10:48:47, skipping insertion in model container
[2025-01-08 22:48:47,544 INFO  L184        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.01 10:48:47" (1/1) ...
[2025-01-08 22:48:47,555 INFO  L175         MainTranslator]: Built tables and reachable declarations
[2025-01-08 22:48:47,644 WARN  L250   ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/bitvector/sum02-2.c[711,724]
[2025-01-08 22:48:47,656 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2025-01-08 22:48:47,664 INFO  L200         MainTranslator]: Completed pre-run
[2025-01-08 22:48:47,673 WARN  L250   ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/bitvector/sum02-2.c[711,724]
[2025-01-08 22:48:47,676 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2025-01-08 22:48:47,687 INFO  L204         MainTranslator]: Completed translation
[2025-01-08 22:48:47,689 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.01 10:48:47 WrapperNode
[2025-01-08 22:48:47,689 INFO  L131        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2025-01-08 22:48:47,690 INFO  L112        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2025-01-08 22:48:47,690 INFO  L270        PluginConnector]: Initializing Boogie Procedure Inliner...
[2025-01-08 22:48:47,690 INFO  L274        PluginConnector]: Boogie Procedure Inliner initialized
[2025-01-08 22:48:47,695 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.01 10:48:47" (1/1) ...
[2025-01-08 22:48:47,700 INFO  L184        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.01 10:48:47" (1/1) ...
[2025-01-08 22:48:47,712 INFO  L138                Inliner]: procedures = 14, calls = 9, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 33
[2025-01-08 22:48:47,712 INFO  L131        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2025-01-08 22:48:47,713 INFO  L112        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2025-01-08 22:48:47,713 INFO  L270        PluginConnector]: Initializing Boogie Preprocessor...
[2025-01-08 22:48:47,714 INFO  L274        PluginConnector]: Boogie Preprocessor initialized
[2025-01-08 22:48:47,719 INFO  L184        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.01 10:48:47" (1/1) ...
[2025-01-08 22:48:47,720 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.01 10:48:47" (1/1) ...
[2025-01-08 22:48:47,721 INFO  L184        PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.01 10:48:47" (1/1) ...
[2025-01-08 22:48:47,731 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].
[2025-01-08 22:48:47,731 INFO  L184        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.01 10:48:47" (1/1) ...
[2025-01-08 22:48:47,731 INFO  L184        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.01 10:48:47" (1/1) ...
[2025-01-08 22:48:47,733 INFO  L184        PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.01 10:48:47" (1/1) ...
[2025-01-08 22:48:47,733 INFO  L184        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.01 10:48:47" (1/1) ...
[2025-01-08 22:48:47,737 INFO  L184        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.01 10:48:47" (1/1) ...
[2025-01-08 22:48:47,740 INFO  L184        PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.01 10:48:47" (1/1) ...
[2025-01-08 22:48:47,740 INFO  L184        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.01 10:48:47" (1/1) ...
[2025-01-08 22:48:47,741 INFO  L131        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2025-01-08 22:48:47,742 INFO  L112        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2025-01-08 22:48:47,743 INFO  L270        PluginConnector]: Initializing RCFGBuilder...
[2025-01-08 22:48:47,743 INFO  L274        PluginConnector]: RCFGBuilder initialized
[2025-01-08 22:48:47,744 INFO  L184        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.01 10:48:47" (1/1) ...
[2025-01-08 22:48:47,747 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2025-01-08 22:48:47,756 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3
[2025-01-08 22:48:47,768 INFO  L229       MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null)
[2025-01-08 22:48:47,770 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process
[2025-01-08 22:48:47,791 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2025-01-08 22:48:47,791 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int#0
[2025-01-08 22:48:47,792 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2025-01-08 22:48:47,792 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2025-01-08 22:48:47,837 INFO  L234             CfgBuilder]: Building ICFG
[2025-01-08 22:48:47,839 INFO  L260             CfgBuilder]: Building CFG for each procedure with an implementation
[2025-01-08 22:48:47,907 INFO  L?                        ?]: Removed 12 outVars from TransFormulas that were not future-live.
[2025-01-08 22:48:47,907 INFO  L283             CfgBuilder]: Performing block encoding
[2025-01-08 22:48:47,919 INFO  L307             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2025-01-08 22:48:47,919 INFO  L312             CfgBuilder]: Removed 0 assume(true) statements.
[2025-01-08 22:48:47,920 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.01 10:48:47 BoogieIcfgContainer
[2025-01-08 22:48:47,920 INFO  L131        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2025-01-08 22:48:47,923 INFO  L112        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2025-01-08 22:48:47,923 INFO  L270        PluginConnector]: Initializing TraceAbstraction...
[2025-01-08 22:48:47,927 INFO  L274        PluginConnector]: TraceAbstraction initialized
[2025-01-08 22:48:47,927 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.01 10:48:47" (1/3) ...
[2025-01-08 22:48:47,927 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42dcd9e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.01 10:48:47, skipping insertion in model container
[2025-01-08 22:48:47,928 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.01 10:48:47" (2/3) ...
[2025-01-08 22:48:47,928 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42dcd9e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.01 10:48:47, skipping insertion in model container
[2025-01-08 22:48:47,928 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.01 10:48:47" (3/3) ...
[2025-01-08 22:48:47,929 INFO  L128   eAbstractionObserver]: Analyzing ICFG sum02-2.c
[2025-01-08 22:48:47,939 INFO  L216   ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2025-01-08 22:48:47,940 INFO  L151   ceAbstractionStarter]: Applying trace abstraction to ICFG sum02-2.c that has 1 procedures, 12 locations, 1 initial locations, 1 loop locations, and 1 error locations.
[2025-01-08 22:48:47,977 INFO  L332      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2025-01-08 22:48:47,988 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;@54b659ef, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2025-01-08 22:48:47,989 INFO  L334      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2025-01-08 22:48:47,992 INFO  L276                IsEmpty]: Start isEmpty. Operand  has 12 states, 10 states have (on average 1.4) internal successors, (14), 11 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)
[2025-01-08 22:48:47,995 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 8
[2025-01-08 22:48:47,995 INFO  L210           NwaCegarLoop]: Found error trace
[2025-01-08 22:48:47,995 INFO  L218           NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1]
[2025-01-08 22:48:47,995 INFO  L396      AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2025-01-08 22:48:47,998 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2025-01-08 22:48:47,998 INFO  L85        PathProgramCache]: Analyzing trace with hash 1804969354, now seen corresponding path program 1 times
[2025-01-08 22:48:48,003 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2025-01-08 22:48:48,004 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [965761286]
[2025-01-08 22:48:48,004 INFO  L97    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2025-01-08 22:48:48,004 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2025-01-08 22:48:48,064 INFO  L108    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes.
[2025-01-08 22:48:48,075 INFO  L111    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements.
[2025-01-08 22:48:48,076 INFO  L114    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s)
[2025-01-08 22:48:48,076 INFO  L115    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2025-01-08 22:48:48,117 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2025-01-08 22:48:48,117 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2025-01-08 22:48:48,118 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [965761286]
[2025-01-08 22:48:48,118 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [965761286] provided 1 perfect and 0 imperfect interpolant sequences
[2025-01-08 22:48:48,118 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2025-01-08 22:48:48,118 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2025-01-08 22:48:48,119 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1613669007]
[2025-01-08 22:48:48,120 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2025-01-08 22:48:48,122 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 2 states
[2025-01-08 22:48:48,122 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2025-01-08 22:48:48,134 INFO  L144   InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants.
[2025-01-08 22:48:48,134 INFO  L146   InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2025-01-08 22:48:48,135 INFO  L87              Difference]: Start difference. First operand  has 12 states, 10 states have (on average 1.4) internal successors, (14), 11 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) Second operand  has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 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)
[2025-01-08 22:48:48,141 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2025-01-08 22:48:48,141 INFO  L93              Difference]: Finished difference Result 21 states and 24 transitions.
[2025-01-08 22:48:48,142 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. 
[2025-01-08 22:48:48,143 INFO  L78                 Accepts]: Start accepts. Automaton has  has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 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
[2025-01-08 22:48:48,143 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2025-01-08 22:48:48,147 INFO  L225             Difference]: With dead ends: 21
[2025-01-08 22:48:48,147 INFO  L226             Difference]: Without dead ends: 8
[2025-01-08 22:48:48,149 INFO  L434           NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2025-01-08 22:48:48,150 INFO  L435           NwaCegarLoop]: 12 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, 12 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
[2025-01-08 22:48:48,151 INFO  L436           NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2025-01-08 22:48:48,159 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 8 states.
[2025-01-08 22:48:48,165 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8.
[2025-01-08 22:48:48,165 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 8 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 7 states have internal predecessors, (8), 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)
[2025-01-08 22:48:48,167 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 8 transitions.
[2025-01-08 22:48:48,169 INFO  L78                 Accepts]: Start accepts. Automaton has 8 states and 8 transitions. Word has length 7
[2025-01-08 22:48:48,169 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2025-01-08 22:48:48,169 INFO  L471      AbstractCegarLoop]: Abstraction has 8 states and 8 transitions.
[2025-01-08 22:48:48,169 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 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)
[2025-01-08 22:48:48,169 INFO  L276                IsEmpty]: Start isEmpty. Operand 8 states and 8 transitions.
[2025-01-08 22:48:48,169 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 8
[2025-01-08 22:48:48,169 INFO  L210           NwaCegarLoop]: Found error trace
[2025-01-08 22:48:48,170 INFO  L218           NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1]
[2025-01-08 22:48:48,170 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2025-01-08 22:48:48,170 INFO  L396      AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2025-01-08 22:48:48,170 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2025-01-08 22:48:48,171 INFO  L85        PathProgramCache]: Analyzing trace with hash 1806816396, now seen corresponding path program 1 times
[2025-01-08 22:48:48,171 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2025-01-08 22:48:48,171 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2079940372]
[2025-01-08 22:48:48,171 INFO  L97    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2025-01-08 22:48:48,171 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2025-01-08 22:48:48,178 INFO  L108    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes.
[2025-01-08 22:48:48,189 INFO  L111    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements.
[2025-01-08 22:48:48,189 INFO  L114    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s)
[2025-01-08 22:48:48,189 INFO  L115    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2025-01-08 22:48:48,364 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2025-01-08 22:48:48,364 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2025-01-08 22:48:48,364 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2079940372]
[2025-01-08 22:48:48,364 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2079940372] provided 1 perfect and 0 imperfect interpolant sequences
[2025-01-08 22:48:48,364 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2025-01-08 22:48:48,364 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2025-01-08 22:48:48,364 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [543477072]
[2025-01-08 22:48:48,364 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2025-01-08 22:48:48,365 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2025-01-08 22:48:48,365 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2025-01-08 22:48:48,365 INFO  L144   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2025-01-08 22:48:48,366 INFO  L146   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2025-01-08 22:48:48,366 INFO  L87              Difference]: Start difference. First operand 8 states and 8 transitions. Second operand  has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 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)
[2025-01-08 22:48:48,399 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2025-01-08 22:48:48,399 INFO  L93              Difference]: Finished difference Result 12 states and 12 transitions.
[2025-01-08 22:48:48,399 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2025-01-08 22:48:48,399 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 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
[2025-01-08 22:48:48,399 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2025-01-08 22:48:48,400 INFO  L225             Difference]: With dead ends: 12
[2025-01-08 22:48:48,400 INFO  L226             Difference]: Without dead ends: 9
[2025-01-08 22:48:48,400 INFO  L434           NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2025-01-08 22:48:48,401 INFO  L435           NwaCegarLoop]: 6 mSDtfsCounter, 0 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2025-01-08 22:48:48,401 INFO  L436           NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 14 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2025-01-08 22:48:48,401 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 9 states.
[2025-01-08 22:48:48,402 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9.
[2025-01-08 22:48:48,402 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 9 states, 8 states have (on average 1.125) internal successors, (9), 8 states have internal predecessors, (9), 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)
[2025-01-08 22:48:48,403 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions.
[2025-01-08 22:48:48,403 INFO  L78                 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 7
[2025-01-08 22:48:48,403 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2025-01-08 22:48:48,403 INFO  L471      AbstractCegarLoop]: Abstraction has 9 states and 9 transitions.
[2025-01-08 22:48:48,403 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 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)
[2025-01-08 22:48:48,404 INFO  L276                IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions.
[2025-01-08 22:48:48,404 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 9
[2025-01-08 22:48:48,404 INFO  L210           NwaCegarLoop]: Found error trace
[2025-01-08 22:48:48,404 INFO  L218           NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1]
[2025-01-08 22:48:48,404 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2025-01-08 22:48:48,404 INFO  L396      AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2025-01-08 22:48:48,405 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2025-01-08 22:48:48,405 INFO  L85        PathProgramCache]: Analyzing trace with hash 176670921, now seen corresponding path program 1 times
[2025-01-08 22:48:48,405 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2025-01-08 22:48:48,405 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2047127197]
[2025-01-08 22:48:48,405 INFO  L97    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2025-01-08 22:48:48,405 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2025-01-08 22:48:48,419 INFO  L108    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes.
[2025-01-08 22:48:48,439 INFO  L111    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements.
[2025-01-08 22:48:48,440 INFO  L114    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s)
[2025-01-08 22:48:48,440 INFO  L115    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2025-01-08 22:48:48,655 INFO  L134       CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2025-01-08 22:48:48,655 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2025-01-08 22:48:48,655 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2047127197]
[2025-01-08 22:48:48,655 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2047127197] provided 0 perfect and 1 imperfect interpolant sequences
[2025-01-08 22:48:48,655 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1839674424]
[2025-01-08 22:48:48,655 INFO  L97    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2025-01-08 22:48:48,655 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2025-01-08 22:48:48,655 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3
[2025-01-08 22:48:48,659 INFO  L229       MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2025-01-08 22:48:48,664 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process
[2025-01-08 22:48:48,694 INFO  L108    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes.
[2025-01-08 22:48:48,705 INFO  L111    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements.
[2025-01-08 22:48:48,705 INFO  L114    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s)
[2025-01-08 22:48:48,705 INFO  L115    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2025-01-08 22:48:48,707 INFO  L256         TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 10 conjuncts are in the unsatisfiable core
[2025-01-08 22:48:48,713 INFO  L279         TraceCheckSpWp]: Computing forward predicates...
[2025-01-08 22:48:48,750 INFO  L134       CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2025-01-08 22:48:48,751 INFO  L312         TraceCheckSpWp]: Computing backward predicates...
[2025-01-08 22:48:48,829 INFO  L134       CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2025-01-08 22:48:48,829 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1839674424] provided 0 perfect and 2 imperfect interpolant sequences
[2025-01-08 22:48:48,829 INFO  L185   FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2025-01-08 22:48:48,829 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 9
[2025-01-08 22:48:48,829 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1844124330]
[2025-01-08 22:48:48,829 INFO  L85    oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2025-01-08 22:48:48,830 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 9 states
[2025-01-08 22:48:48,830 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2025-01-08 22:48:48,830 INFO  L144   InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants.
[2025-01-08 22:48:48,830 INFO  L146   InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72
[2025-01-08 22:48:48,830 INFO  L87              Difference]: Start difference. First operand 9 states and 9 transitions. Second operand  has 9 states, 9 states have (on average 1.7777777777777777) internal successors, (16), 9 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)
[2025-01-08 22:48:48,847 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2025-01-08 22:48:48,847 INFO  L93              Difference]: Finished difference Result 13 states and 13 transitions.
[2025-01-08 22:48:48,847 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2025-01-08 22:48:48,848 INFO  L78                 Accepts]: Start accepts. Automaton has  has 9 states, 9 states have (on average 1.7777777777777777) internal successors, (16), 9 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) Word has length 8
[2025-01-08 22:48:48,848 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2025-01-08 22:48:48,848 INFO  L225             Difference]: With dead ends: 13
[2025-01-08 22:48:48,848 INFO  L226             Difference]: Without dead ends: 10
[2025-01-08 22:48:48,848 INFO  L434           NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72
[2025-01-08 22:48:48,849 INFO  L435           NwaCegarLoop]: 6 mSDtfsCounter, 0 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2025-01-08 22:48:48,849 INFO  L436           NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 25 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2025-01-08 22:48:48,849 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 10 states.
[2025-01-08 22:48:48,850 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10.
[2025-01-08 22:48:48,851 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 10 states, 9 states have (on average 1.1111111111111112) internal successors, (10), 9 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)
[2025-01-08 22:48:48,851 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 10 transitions.
[2025-01-08 22:48:48,851 INFO  L78                 Accepts]: Start accepts. Automaton has 10 states and 10 transitions. Word has length 8
[2025-01-08 22:48:48,851 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2025-01-08 22:48:48,851 INFO  L471      AbstractCegarLoop]: Abstraction has 10 states and 10 transitions.
[2025-01-08 22:48:48,851 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 9 states, 9 states have (on average 1.7777777777777777) internal successors, (16), 9 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)
[2025-01-08 22:48:48,851 INFO  L276                IsEmpty]: Start isEmpty. Operand 10 states and 10 transitions.
[2025-01-08 22:48:48,851 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 10
[2025-01-08 22:48:48,851 INFO  L210           NwaCegarLoop]: Found error trace
[2025-01-08 22:48:48,852 INFO  L218           NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1]
[2025-01-08 22:48:48,858 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0
[2025-01-08 22:48:49,056 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2025-01-08 22:48:49,056 INFO  L396      AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2025-01-08 22:48:49,057 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2025-01-08 22:48:49,057 INFO  L85        PathProgramCache]: Analyzing trace with hash 1181768748, now seen corresponding path program 2 times
[2025-01-08 22:48:49,057 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2025-01-08 22:48:49,057 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1046923842]
[2025-01-08 22:48:49,057 INFO  L95    rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
[2025-01-08 22:48:49,057 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2025-01-08 22:48:49,064 INFO  L108    AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 9 statements into 2 equivalence classes.
[2025-01-08 22:48:49,073 INFO  L111    AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 9 of 9 statements.
[2025-01-08 22:48:49,073 INFO  L114    AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2025-01-08 22:48:49,073 INFO  L115    AnnotateAndAsserter]: Conjunction of SSA is unknown
[2025-01-08 22:48:49,075 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [929464341]
[2025-01-08 22:48:49,075 INFO  L95    rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
[2025-01-08 22:48:49,075 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2025-01-08 22:48:49,075 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3
[2025-01-08 22:48:49,077 INFO  L229       MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2025-01-08 22:48:49,078 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process
[2025-01-08 22:48:49,098 INFO  L108    AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 9 statements into 2 equivalence classes.
[2025-01-08 22:48:49,117 INFO  L111    AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 9 of 9 statements.
[2025-01-08 22:48:49,117 INFO  L114    AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2025-01-08 22:48:49,117 INFO  L115    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2025-01-08 22:48:49,118 INFO  L256         TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 22 conjuncts are in the unsatisfiable core
[2025-01-08 22:48:49,120 INFO  L279         TraceCheckSpWp]: Computing forward predicates...
[2025-01-08 22:48:49,191 INFO  L134       CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2025-01-08 22:48:49,191 INFO  L312         TraceCheckSpWp]: Computing backward predicates...
[2025-01-08 22:48:50,248 INFO  L134       CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2025-01-08 22:48:50,249 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2025-01-08 22:48:50,249 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1046923842]
[2025-01-08 22:48:50,249 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2025-01-08 22:48:50,249 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [929464341]
[2025-01-08 22:48:50,249 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [929464341] provided 0 perfect and 2 imperfect interpolant sequences
[2025-01-08 22:48:50,249 INFO  L185   FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2025-01-08 22:48:50,249 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 11
[2025-01-08 22:48:50,249 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1411561382]
[2025-01-08 22:48:50,249 INFO  L85    oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2025-01-08 22:48:50,250 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 11 states
[2025-01-08 22:48:50,250 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2025-01-08 22:48:50,250 INFO  L144   InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants.
[2025-01-08 22:48:50,250 INFO  L146   InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110
[2025-01-08 22:48:50,250 INFO  L87              Difference]: Start difference. First operand 10 states and 10 transitions. Second operand  has 11 states, 11 states have (on average 1.3636363636363635) internal successors, (15), 11 states have internal predecessors, (15), 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)
[2025-01-08 22:48:51,125 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2025-01-08 22:48:51,126 INFO  L93              Difference]: Finished difference Result 17 states and 20 transitions.
[2025-01-08 22:48:51,126 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2025-01-08 22:48:51,126 INFO  L78                 Accepts]: Start accepts. Automaton has  has 11 states, 11 states have (on average 1.3636363636363635) internal successors, (15), 11 states have internal predecessors, (15), 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 9
[2025-01-08 22:48:51,126 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2025-01-08 22:48:51,126 INFO  L225             Difference]: With dead ends: 17
[2025-01-08 22:48:51,126 INFO  L226             Difference]: Without dead ends: 14
[2025-01-08 22:48:51,126 INFO  L434           NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=50, Invalid=106, Unknown=0, NotChecked=0, Total=156
[2025-01-08 22:48:51,127 INFO  L435           NwaCegarLoop]: 6 mSDtfsCounter, 0 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2025-01-08 22:48:51,127 INFO  L436           NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 29 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2025-01-08 22:48:51,127 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14 states.
[2025-01-08 22:48:51,130 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14.
[2025-01-08 22:48:51,130 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 14 states, 13 states have (on average 1.0769230769230769) internal successors, (14), 13 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)
[2025-01-08 22:48:51,131 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions.
[2025-01-08 22:48:51,131 INFO  L78                 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 9
[2025-01-08 22:48:51,131 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2025-01-08 22:48:51,131 INFO  L471      AbstractCegarLoop]: Abstraction has 14 states and 14 transitions.
[2025-01-08 22:48:51,131 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 11 states, 11 states have (on average 1.3636363636363635) internal successors, (15), 11 states have internal predecessors, (15), 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)
[2025-01-08 22:48:51,131 INFO  L276                IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions.
[2025-01-08 22:48:51,131 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 14
[2025-01-08 22:48:51,131 INFO  L210           NwaCegarLoop]: Found error trace
[2025-01-08 22:48:51,131 INFO  L218           NwaCegarLoop]: trace histogram [6, 1, 1, 1, 1, 1, 1, 1]
[2025-01-08 22:48:51,138 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0
[2025-01-08 22:48:51,331 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2025-01-08 22:48:51,332 INFO  L396      AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2025-01-08 22:48:51,332 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2025-01-08 22:48:51,332 INFO  L85        PathProgramCache]: Analyzing trace with hash 782054252, now seen corresponding path program 3 times
[2025-01-08 22:48:51,332 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2025-01-08 22:48:51,333 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1432472019]
[2025-01-08 22:48:51,333 INFO  L95    rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2
[2025-01-08 22:48:51,333 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2025-01-08 22:48:51,337 INFO  L108    AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 13 statements into 4 equivalence classes.
[2025-01-08 22:48:51,363 INFO  L111    AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) and asserted 13 of 13 statements.
[2025-01-08 22:48:51,363 INFO  L114    AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s)
[2025-01-08 22:48:51,363 INFO  L115    AnnotateAndAsserter]: Conjunction of SSA is unknown
[2025-01-08 22:48:51,364 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1836700905]
[2025-01-08 22:48:51,364 INFO  L95    rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2
[2025-01-08 22:48:51,364 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2025-01-08 22:48:51,364 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3
[2025-01-08 22:48:51,367 INFO  L229       MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2025-01-08 22:48:51,368 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process
[2025-01-08 22:48:51,387 INFO  L108    AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 13 statements into 4 equivalence classes.
[2025-01-08 22:48:51,512 INFO  L111    AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) and asserted 13 of 13 statements.
[2025-01-08 22:48:51,512 INFO  L114    AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s)
[2025-01-08 22:48:51,512 INFO  L115    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2025-01-08 22:48:51,513 WARN  L254         TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 42 conjuncts are in the unsatisfiable core
[2025-01-08 22:48:51,515 INFO  L279         TraceCheckSpWp]: Computing forward predicates...
[2025-01-08 22:48:51,631 INFO  L134       CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2025-01-08 22:48:51,632 INFO  L312         TraceCheckSpWp]: Computing backward predicates...
[2025-01-08 22:49:11,525 INFO  L134       CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2025-01-08 22:49:11,525 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2025-01-08 22:49:11,525 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1432472019]
[2025-01-08 22:49:11,525 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2025-01-08 22:49:11,525 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1836700905]
[2025-01-08 22:49:11,526 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1836700905] provided 0 perfect and 2 imperfect interpolant sequences
[2025-01-08 22:49:11,526 INFO  L185   FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2025-01-08 22:49:11,526 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 19
[2025-01-08 22:49:11,526 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [360758279]
[2025-01-08 22:49:11,526 INFO  L85    oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2025-01-08 22:49:11,526 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 19 states
[2025-01-08 22:49:11,526 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2025-01-08 22:49:11,526 INFO  L144   InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants.
[2025-01-08 22:49:11,526 INFO  L146   InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=251, Unknown=1, NotChecked=0, Total=342
[2025-01-08 22:49:11,527 INFO  L87              Difference]: Start difference. First operand 14 states and 14 transitions. Second operand  has 19 states, 19 states have (on average 1.2105263157894737) internal successors, (23), 19 states have internal predecessors, (23), 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)
[2025-01-08 22:49:16,173 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers []
[2025-01-08 22:49:17,776 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.59s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers []
[2025-01-08 22:49:48,334 WARN  L286               SmtUtils]: Spent 24.56s on a formula simplification that was a NOOP. DAG size: 86 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)
[2025-01-08 22:49:57,868 WARN  L286               SmtUtils]: Spent 9.32s on a formula simplification that was a NOOP. DAG size: 68 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)
[2025-01-08 22:50:03,236 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2025-01-08 22:50:03,236 INFO  L93              Difference]: Finished difference Result 25 states and 32 transitions.
[2025-01-08 22:50:03,237 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. 
[2025-01-08 22:50:03,237 INFO  L78                 Accepts]: Start accepts. Automaton has  has 19 states, 19 states have (on average 1.2105263157894737) internal successors, (23), 19 states have internal predecessors, (23), 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 13
[2025-01-08 22:50:03,237 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2025-01-08 22:50:03,237 INFO  L225             Difference]: With dead ends: 25
[2025-01-08 22:50:03,237 INFO  L226             Difference]: Without dead ends: 22
[2025-01-08 22:50:03,238 INFO  L434           NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 61.0s TimeCoverageRelationStatistics Valid=186, Invalid=412, Unknown=2, NotChecked=0, Total=600
[2025-01-08 22:50:03,238 INFO  L435           NwaCegarLoop]: 6 mSDtfsCounter, 0 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.6s IncrementalHoareTripleChecker+Time
[2025-01-08 22:50:03,238 INFO  L436           NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 43 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 94 Invalid, 1 Unknown, 0 Unchecked, 6.6s Time]
[2025-01-08 22:50:03,238 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 22 states.
[2025-01-08 22:50:03,248 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22.
[2025-01-08 22:50:03,249 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 22 states, 21 states have (on average 1.0476190476190477) internal successors, (22), 21 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)
[2025-01-08 22:50:03,250 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 22 transitions.
[2025-01-08 22:50:03,250 INFO  L78                 Accepts]: Start accepts. Automaton has 22 states and 22 transitions. Word has length 13
[2025-01-08 22:50:03,250 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2025-01-08 22:50:03,250 INFO  L471      AbstractCegarLoop]: Abstraction has 22 states and 22 transitions.
[2025-01-08 22:50:03,250 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 19 states, 19 states have (on average 1.2105263157894737) internal successors, (23), 19 states have internal predecessors, (23), 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)
[2025-01-08 22:50:03,251 INFO  L276                IsEmpty]: Start isEmpty. Operand 22 states and 22 transitions.
[2025-01-08 22:50:03,251 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 22
[2025-01-08 22:50:03,251 INFO  L210           NwaCegarLoop]: Found error trace
[2025-01-08 22:50:03,251 INFO  L218           NwaCegarLoop]: trace histogram [14, 1, 1, 1, 1, 1, 1, 1]
[2025-01-08 22:50:03,258 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0
[2025-01-08 22:50:03,452 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2025-01-08 22:50:03,452 INFO  L396      AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2025-01-08 22:50:03,452 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2025-01-08 22:50:03,452 INFO  L85        PathProgramCache]: Analyzing trace with hash -2138177044, now seen corresponding path program 4 times
[2025-01-08 22:50:03,452 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2025-01-08 22:50:03,452 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [360862281]
[2025-01-08 22:50:03,452 INFO  L95    rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST
[2025-01-08 22:50:03,453 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2025-01-08 22:50:03,457 INFO  L108    AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 21 statements into 2 equivalence classes.
[2025-01-08 22:50:03,503 INFO  L111    AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 21 of 21 statements.
[2025-01-08 22:50:03,504 INFO  L114    AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s)
[2025-01-08 22:50:03,504 INFO  L115    AnnotateAndAsserter]: Conjunction of SSA is unknown
[2025-01-08 22:50:03,505 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [368160196]
[2025-01-08 22:50:03,505 INFO  L95    rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST
[2025-01-08 22:50:03,505 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2025-01-08 22:50:03,505 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3
[2025-01-08 22:50:03,507 INFO  L229       MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2025-01-08 22:50:03,509 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process
[2025-01-08 22:50:03,533 INFO  L108    AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 21 statements into 2 equivalence classes.
[2025-01-08 22:50:03,981 INFO  L111    AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 21 of 21 statements.
[2025-01-08 22:50:03,981 INFO  L114    AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s)
[2025-01-08 22:50:03,982 INFO  L115    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2025-01-08 22:50:03,983 WARN  L254         TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 81 conjuncts are in the unsatisfiable core
[2025-01-08 22:50:03,986 INFO  L279         TraceCheckSpWp]: Computing forward predicates...
[2025-01-08 22:50:04,281 INFO  L134       CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2025-01-08 22:50:04,281 INFO  L312         TraceCheckSpWp]: Computing backward predicates...