./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/unreach-call.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench/geo1-u.c --full-output --architecture 32bit


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


Checking for ERROR reachability
Using default analysis
Version fca748b1
Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench/geo1-u.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) )

 --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 2477a82abfbd78f77da01d2255ad84d0b5254e5ef3977cac0ddc1fff6c3da9e8
--- Real Ultimate output ---
This is Ultimate 0.2.5-wip.dd.update-z3-fca748b-m
[2024-11-19 21:08:07,931 INFO  L188        SettingsManager]: Resetting all preferences to default values...
[2024-11-19 21:08:08,003 INFO  L114        SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf
[2024-11-19 21:08:08,005 WARN  L101        SettingsManager]: Preference file contains the following unknown settings:
[2024-11-19 21:08:08,006 WARN  L103        SettingsManager]:   * de.uni_freiburg.informatik.ultimate.core.Log level for class
[2024-11-19 21:08:08,028 INFO  L130        SettingsManager]: Preferences different from defaults after loading the file:
[2024-11-19 21:08:08,029 INFO  L151        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2024-11-19 21:08:08,029 INFO  L153        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2024-11-19 21:08:08,030 INFO  L151        SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults:
[2024-11-19 21:08:08,031 INFO  L153        SettingsManager]:  * Use memory slicer=true
[2024-11-19 21:08:08,031 INFO  L151        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2024-11-19 21:08:08,032 INFO  L153        SettingsManager]:  * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2024-11-19 21:08:08,032 INFO  L151        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2024-11-19 21:08:08,032 INFO  L153        SettingsManager]:  * Create parallel compositions if possible=false
[2024-11-19 21:08:08,032 INFO  L153        SettingsManager]:  * Use SBE=true
[2024-11-19 21:08:08,033 INFO  L151        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2024-11-19 21:08:08,033 INFO  L153        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2024-11-19 21:08:08,033 INFO  L153        SettingsManager]:  * sizeof long=4
[2024-11-19 21:08:08,036 INFO  L153        SettingsManager]:  * Overapproximate operations on floating types=true
[2024-11-19 21:08:08,036 INFO  L153        SettingsManager]:  * sizeof POINTER=4
[2024-11-19 21:08:08,036 INFO  L153        SettingsManager]:  * Check division by zero=IGNORE
[2024-11-19 21:08:08,037 INFO  L153        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2024-11-19 21:08:08,037 INFO  L153        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2024-11-19 21:08:08,037 INFO  L153        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2024-11-19 21:08:08,037 INFO  L153        SettingsManager]:  * Allow undefined functions=false
[2024-11-19 21:08:08,037 INFO  L153        SettingsManager]:  * sizeof long double=12
[2024-11-19 21:08:08,038 INFO  L153        SettingsManager]:  * Check if freed pointer was valid=false
[2024-11-19 21:08:08,038 INFO  L153        SettingsManager]:  * Use constant arrays=true
[2024-11-19 21:08:08,038 INFO  L151        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2024-11-19 21:08:08,038 INFO  L153        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2024-11-19 21:08:08,038 INFO  L153        SettingsManager]:  * Only consider context switches at boundaries of atomic blocks=true
[2024-11-19 21:08:08,038 INFO  L153        SettingsManager]:  * SMT solver=External_DefaultMode
[2024-11-19 21:08:08,039 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2024-11-19 21:08:08,039 INFO  L151        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2024-11-19 21:08:08,039 INFO  L153        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2024-11-19 21:08:08,039 INFO  L153        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopHeads
[2024-11-19 21:08:08,039 INFO  L153        SettingsManager]:  * Trace refinement strategy=CAMEL
[2024-11-19 21:08:08,039 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2024-11-19 21:08:08,039 INFO  L153        SettingsManager]:  * Apply one-shot large block encoding in concurrent analysis=false
[2024-11-19 21:08:08,040 INFO  L153        SettingsManager]:  * Automaton type used in concurrency analysis=PETRI_NET
[2024-11-19 21:08:08,040 INFO  L153        SettingsManager]:  * Order on configurations for Petri net unfoldings=DBO
[2024-11-19 21:08:08,041 INFO  L153        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2024-11-19 21:08:08,041 INFO  L153        SettingsManager]:  * Looper check in Petri net analysis=SEMANTIC
WARNING: An illegal reflective access operation has occurred
WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int)
WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) )


Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2477a82abfbd78f77da01d2255ad84d0b5254e5ef3977cac0ddc1fff6c3da9e8
[2024-11-19 21:08:08,238 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2024-11-19 21:08:08,261 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2024-11-19 21:08:08,264 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2024-11-19 21:08:08,265 INFO  L270        PluginConnector]: Initializing CDTParser...
[2024-11-19 21:08:08,266 INFO  L274        PluginConnector]: CDTParser initialized
[2024-11-19 21:08:08,266 INFO  L431   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench/geo1-u.c
[2024-11-19 21:08:09,464 INFO  L533              CDTParser]: Created temporary CDT project at NULL
[2024-11-19 21:08:09,617 INFO  L384              CDTParser]: Found 1 translation units.
[2024-11-19 21:08:09,618 INFO  L180              CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench/geo1-u.c
[2024-11-19 21:08:09,623 INFO  L427              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c6931b383/e227460820974298986ff697dd8bd5c4/FLAG5111de52c
[2024-11-19 21:08:09,633 INFO  L435              CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c6931b383/e227460820974298986ff697dd8bd5c4
[2024-11-19 21:08:09,635 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2024-11-19 21:08:09,636 INFO  L133        ToolchainWalker]: Walking toolchain with 6 elements.
[2024-11-19 21:08:09,639 INFO  L112        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2024-11-19 21:08:09,639 INFO  L270        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2024-11-19 21:08:09,644 INFO  L274        PluginConnector]: CACSL2BoogieTranslator initialized
[2024-11-19 21:08:09,645 INFO  L184        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 09:08:09" (1/1) ...
[2024-11-19 21:08:09,645 INFO  L204        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2a0c4e00 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:08:09, skipping insertion in model container
[2024-11-19 21:08:09,646 INFO  L184        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 09:08:09" (1/1) ...
[2024-11-19 21:08:09,662 INFO  L175         MainTranslator]: Built tables and reachable declarations
[2024-11-19 21:08:09,844 WARN  L250   ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench/geo1-u.c[555,568]
[2024-11-19 21:08:09,858 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2024-11-19 21:08:09,871 INFO  L200         MainTranslator]: Completed pre-run
[2024-11-19 21:08:09,880 WARN  L250   ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench/geo1-u.c[555,568]
[2024-11-19 21:08:09,885 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2024-11-19 21:08:09,898 INFO  L204         MainTranslator]: Completed translation
[2024-11-19 21:08:09,898 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:08:09 WrapperNode
[2024-11-19 21:08:09,899 INFO  L131        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2024-11-19 21:08:09,899 INFO  L112        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2024-11-19 21:08:09,900 INFO  L270        PluginConnector]: Initializing Boogie Procedure Inliner...
[2024-11-19 21:08:09,900 INFO  L274        PluginConnector]: Boogie Procedure Inliner initialized
[2024-11-19 21:08:09,905 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:08:09" (1/1) ...
[2024-11-19 21:08:09,912 INFO  L184        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:08:09" (1/1) ...
[2024-11-19 21:08:09,925 INFO  L138                Inliner]: procedures = 14, calls = 9, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 37
[2024-11-19 21:08:09,926 INFO  L131        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2024-11-19 21:08:09,927 INFO  L112        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2024-11-19 21:08:09,927 INFO  L270        PluginConnector]: Initializing Boogie Preprocessor...
[2024-11-19 21:08:09,927 INFO  L274        PluginConnector]: Boogie Preprocessor initialized
[2024-11-19 21:08:09,934 INFO  L184        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:08:09" (1/1) ...
[2024-11-19 21:08:09,935 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:08:09" (1/1) ...
[2024-11-19 21:08:09,939 INFO  L184        PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:08:09" (1/1) ...
[2024-11-19 21:08:09,948 INFO  L175           MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0].
[2024-11-19 21:08:09,948 INFO  L184        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:08:09" (1/1) ...
[2024-11-19 21:08:09,948 INFO  L184        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:08:09" (1/1) ...
[2024-11-19 21:08:09,950 INFO  L184        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:08:09" (1/1) ...
[2024-11-19 21:08:09,952 INFO  L184        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:08:09" (1/1) ...
[2024-11-19 21:08:09,952 INFO  L184        PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:08:09" (1/1) ...
[2024-11-19 21:08:09,953 INFO  L184        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:08:09" (1/1) ...
[2024-11-19 21:08:09,954 INFO  L131        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2024-11-19 21:08:09,954 INFO  L112        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2024-11-19 21:08:09,955 INFO  L270        PluginConnector]: Initializing RCFGBuilder...
[2024-11-19 21:08:09,955 INFO  L274        PluginConnector]: RCFGBuilder initialized
[2024-11-19 21:08:09,956 INFO  L184        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:08:09" (1/1) ...
[2024-11-19 21:08:09,960 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2024-11-19 21:08:09,969 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2024-11-19 21:08:09,980 INFO  L229       MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null)
[2024-11-19 21:08:09,982 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process
[2024-11-19 21:08:10,032 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2024-11-19 21:08:10,033 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int#0
[2024-11-19 21:08:10,033 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2024-11-19 21:08:10,033 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2024-11-19 21:08:10,033 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_assert
[2024-11-19 21:08:10,033 INFO  L138     BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert
[2024-11-19 21:08:10,077 INFO  L238             CfgBuilder]: Building ICFG
[2024-11-19 21:08:10,078 INFO  L264             CfgBuilder]: Building CFG for each procedure with an implementation
[2024-11-19 21:08:10,155 INFO  L?                        ?]: Removed 7 outVars from TransFormulas that were not future-live.
[2024-11-19 21:08:10,156 INFO  L287             CfgBuilder]: Performing block encoding
[2024-11-19 21:08:10,165 INFO  L311             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2024-11-19 21:08:10,165 INFO  L316             CfgBuilder]: Removed 1 assume(true) statements.
[2024-11-19 21:08:10,165 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 09:08:10 BoogieIcfgContainer
[2024-11-19 21:08:10,165 INFO  L131        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2024-11-19 21:08:10,168 INFO  L112        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2024-11-19 21:08:10,168 INFO  L270        PluginConnector]: Initializing TraceAbstraction...
[2024-11-19 21:08:10,170 INFO  L274        PluginConnector]: TraceAbstraction initialized
[2024-11-19 21:08:10,170 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 09:08:09" (1/3) ...
[2024-11-19 21:08:10,171 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38c7d3be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 09:08:10, skipping insertion in model container
[2024-11-19 21:08:10,171 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:08:09" (2/3) ...
[2024-11-19 21:08:10,171 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38c7d3be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 09:08:10, skipping insertion in model container
[2024-11-19 21:08:10,171 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 09:08:10" (3/3) ...
[2024-11-19 21:08:10,172 INFO  L112   eAbstractionObserver]: Analyzing ICFG geo1-u.c
[2024-11-19 21:08:10,184 INFO  L214   ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2024-11-19 21:08:10,185 INFO  L154   ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2024-11-19 21:08:10,223 INFO  L332      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2024-11-19 21:08:10,228 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;@3e868df7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2024-11-19 21:08:10,228 INFO  L334      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2024-11-19 21:08:10,231 INFO  L276                IsEmpty]: Start isEmpty. Operand  has 17 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 13 states have internal predecessors, (17), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2024-11-19 21:08:10,236 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 8
[2024-11-19 21:08:10,236 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-19 21:08:10,237 INFO  L215           NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1]
[2024-11-19 21:08:10,237 INFO  L396      AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-19 21:08:10,241 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-19 21:08:10,241 INFO  L85        PathProgramCache]: Analyzing trace with hash 1811386335, now seen corresponding path program 1 times
[2024-11-19 21:08:10,248 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-19 21:08:10,248 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1667060809]
[2024-11-19 21:08:10,249 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-19 21:08:10,249 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-19 21:08:10,344 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unknown
[2024-11-19 21:08:10,348 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [485687851]
[2024-11-19 21:08:10,351 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-19 21:08:10,351 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-19 21:08:10,351 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2024-11-19 21:08:10,353 INFO  L229       MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-19 21:08:10,355 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process
[2024-11-19 21:08:10,403 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-19 21:08:10,406 INFO  L255         TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 7 conjuncts are in the unsatisfiable core
[2024-11-19 21:08:10,411 INFO  L278         TraceCheckSpWp]: Computing forward predicates...
[2024-11-19 21:08:10,509 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-19 21:08:10,509 INFO  L307         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2024-11-19 21:08:10,510 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-19 21:08:10,510 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1667060809]
[2024-11-19 21:08:10,510 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2024-11-19 21:08:10,511 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [485687851]
[2024-11-19 21:08:10,511 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [485687851] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-19 21:08:10,511 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-19 21:08:10,511 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2024-11-19 21:08:10,513 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1900089591]
[2024-11-19 21:08:10,513 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-19 21:08:10,516 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2024-11-19 21:08:10,516 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-19 21:08:10,531 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2024-11-19 21:08:10,532 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2024-11-19 21:08:10,533 INFO  L87              Difference]: Start difference. First operand  has 17 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 13 states have internal predecessors, (17), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand  has 5 states, 5 states have (on average 1.2) internal successors, (6), 4 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-19 21:08:10,602 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-19 21:08:10,602 INFO  L93              Difference]: Finished difference Result 40 states and 55 transitions.
[2024-11-19 21:08:10,604 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2024-11-19 21:08:10,605 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 1.2) internal successors, (6), 4 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7
[2024-11-19 21:08:10,606 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-19 21:08:10,610 INFO  L225             Difference]: With dead ends: 40
[2024-11-19 21:08:10,610 INFO  L226             Difference]: Without dead ends: 21
[2024-11-19 21:08:10,613 INFO  L431           NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30
[2024-11-19 21:08:10,618 INFO  L432           NwaCegarLoop]: 13 mSDtfsCounter, 4 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2024-11-19 21:08:10,618 INFO  L433           NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 49 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2024-11-19 21:08:10,631 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 21 states.
[2024-11-19 21:08:10,648 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 19.
[2024-11-19 21:08:10,650 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 19 states, 13 states have (on average 1.1538461538461537) internal successors, (15), 15 states have internal predecessors, (15), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2)
[2024-11-19 21:08:10,651 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 20 transitions.
[2024-11-19 21:08:10,653 INFO  L78                 Accepts]: Start accepts. Automaton has 19 states and 20 transitions. Word has length 7
[2024-11-19 21:08:10,654 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-19 21:08:10,654 INFO  L471      AbstractCegarLoop]: Abstraction has 19 states and 20 transitions.
[2024-11-19 21:08:10,654 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 1.2) internal successors, (6), 4 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-19 21:08:10,655 INFO  L276                IsEmpty]: Start isEmpty. Operand 19 states and 20 transitions.
[2024-11-19 21:08:10,655 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 15
[2024-11-19 21:08:10,656 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-19 21:08:10,656 INFO  L215           NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-19 21:08:10,664 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0
[2024-11-19 21:08:10,860 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0
[2024-11-19 21:08:10,861 INFO  L396      AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-19 21:08:10,861 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-19 21:08:10,861 INFO  L85        PathProgramCache]: Analyzing trace with hash -555889191, now seen corresponding path program 1 times
[2024-11-19 21:08:10,862 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-19 21:08:10,862 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1098659118]
[2024-11-19 21:08:10,862 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-19 21:08:10,862 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-19 21:08:10,890 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unknown
[2024-11-19 21:08:10,892 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1091652400]
[2024-11-19 21:08:10,892 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-19 21:08:10,892 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-19 21:08:10,892 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2024-11-19 21:08:10,896 INFO  L229       MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-19 21:08:10,897 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process
[2024-11-19 21:08:10,942 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-19 21:08:10,943 INFO  L255         TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 11 conjuncts are in the unsatisfiable core
[2024-11-19 21:08:10,945 INFO  L278         TraceCheckSpWp]: Computing forward predicates...
[2024-11-19 21:08:11,055 INFO  L134       CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-19 21:08:11,055 INFO  L311         TraceCheckSpWp]: Computing backward predicates...
[2024-11-19 21:08:15,221 INFO  L134       CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 2 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-19 21:08:15,222 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-19 21:08:15,222 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1098659118]
[2024-11-19 21:08:15,222 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2024-11-19 21:08:15,223 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1091652400]
[2024-11-19 21:08:15,223 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1091652400] provided 0 perfect and 2 imperfect interpolant sequences
[2024-11-19 21:08:15,223 INFO  L185   FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2024-11-19 21:08:15,223 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8
[2024-11-19 21:08:15,224 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1844201572]
[2024-11-19 21:08:15,224 INFO  L85    oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2024-11-19 21:08:15,225 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 8 states
[2024-11-19 21:08:15,225 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-19 21:08:15,226 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2024-11-19 21:08:15,227 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=38, Unknown=1, NotChecked=0, Total=56
[2024-11-19 21:08:15,227 INFO  L87              Difference]: Start difference. First operand 19 states and 20 transitions. Second operand  has 8 states, 8 states have (on average 1.875) internal successors, (15), 7 states have internal predecessors, (15), 4 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2024-11-19 21:08:23,570 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers []
[2024-11-19 21:08:27,583 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers []
[2024-11-19 21:08:31,593 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers []
[2024-11-19 21:08:35,597 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers []
[2024-11-19 21:08:39,601 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers []
[2024-11-19 21:08:43,610 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers []
[2024-11-19 21:08:43,625 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-19 21:08:43,625 INFO  L93              Difference]: Finished difference Result 39 states and 46 transitions.
[2024-11-19 21:08:43,626 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. 
[2024-11-19 21:08:43,626 INFO  L78                 Accepts]: Start accepts. Automaton has  has 8 states, 8 states have (on average 1.875) internal successors, (15), 7 states have internal predecessors, (15), 4 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 14
[2024-11-19 21:08:43,626 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-19 21:08:43,627 INFO  L225             Difference]: With dead ends: 39
[2024-11-19 21:08:43,627 INFO  L226             Difference]: Without dead ends: 37
[2024-11-19 21:08:43,627 INFO  L431           NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 18 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 8.2s TimeCoverageRelationStatistics Valid=27, Invalid=62, Unknown=1, NotChecked=0, Total=90
[2024-11-19 21:08:43,628 INFO  L432           NwaCegarLoop]: 12 mSDtfsCounter, 11 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 3 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 24.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 24.3s IncrementalHoareTripleChecker+Time
[2024-11-19 21:08:43,629 INFO  L433           NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 57 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 42 Invalid, 6 Unknown, 0 Unchecked, 24.3s Time]
[2024-11-19 21:08:43,629 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 37 states.
[2024-11-19 21:08:43,636 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 32.
[2024-11-19 21:08:43,636 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 32 states, 22 states have (on average 1.2272727272727273) internal successors, (27), 24 states have internal predecessors, (27), 6 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 4 states have call predecessors, (5), 5 states have call successors, (5)
[2024-11-19 21:08:43,636 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 38 transitions.
[2024-11-19 21:08:43,637 INFO  L78                 Accepts]: Start accepts. Automaton has 32 states and 38 transitions. Word has length 14
[2024-11-19 21:08:43,637 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-19 21:08:43,637 INFO  L471      AbstractCegarLoop]: Abstraction has 32 states and 38 transitions.
[2024-11-19 21:08:43,637 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 8 states, 8 states have (on average 1.875) internal successors, (15), 7 states have internal predecessors, (15), 4 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2024-11-19 21:08:43,637 INFO  L276                IsEmpty]: Start isEmpty. Operand 32 states and 38 transitions.
[2024-11-19 21:08:43,638 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 15
[2024-11-19 21:08:43,638 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-19 21:08:43,638 INFO  L215           NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-19 21:08:43,645 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0
[2024-11-19 21:08:43,839 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1
[2024-11-19 21:08:43,839 INFO  L396      AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-19 21:08:43,840 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-19 21:08:43,840 INFO  L85        PathProgramCache]: Analyzing trace with hash -603852701, now seen corresponding path program 1 times
[2024-11-19 21:08:43,840 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-19 21:08:43,840 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [844855027]
[2024-11-19 21:08:43,840 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-19 21:08:43,840 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-19 21:08:43,854 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unknown
[2024-11-19 21:08:43,855 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1427748626]
[2024-11-19 21:08:43,855 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-19 21:08:43,856 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-19 21:08:43,856 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2024-11-19 21:08:43,858 INFO  L229       MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-19 21:08:43,858 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process
[2024-11-19 21:08:43,890 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is sat
[2024-11-19 21:08:43,890 INFO  L356             TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders.
[2024-11-19 21:08:43,895 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is sat
[2024-11-19 21:08:43,906 INFO  L130   FreeRefinementEngine]: Strategy CAMEL found a feasible trace
[2024-11-19 21:08:43,908 INFO  L325         BasicCegarLoop]: Counterexample is feasible
[2024-11-19 21:08:43,909 INFO  L782   garLoopResultBuilder]: Registering result UNSAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining)
[2024-11-19 21:08:43,922 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0
[2024-11-19 21:08:44,111 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-19 21:08:44,114 INFO  L407         BasicCegarLoop]: Path program histogram: [1, 1, 1]
[2024-11-19 21:08:44,126 INFO  L170   ceAbstractionStarter]: Computing trace abstraction results
[2024-11-19 21:08:44,131 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 09:08:44 BoogieIcfgContainer
[2024-11-19 21:08:44,131 INFO  L131        PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2024-11-19 21:08:44,132 INFO  L112        PluginConnector]: ------------------------Witness Printer----------------------------
[2024-11-19 21:08:44,132 INFO  L270        PluginConnector]: Initializing Witness Printer...
[2024-11-19 21:08:44,132 INFO  L274        PluginConnector]: Witness Printer initialized
[2024-11-19 21:08:44,132 INFO  L184        PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 09:08:10" (3/4) ...
[2024-11-19 21:08:44,132 INFO  L136         WitnessPrinter]: Generating witness for reachability counterexample
[2024-11-19 21:08:44,163 INFO  L149         WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml
[2024-11-19 21:08:44,163 INFO  L131        PluginConnector]: ------------------------ END Witness Printer----------------------------
[2024-11-19 21:08:44,164 INFO  L158              Benchmark]: Toolchain (without parser) took 34527.31ms. Allocated memory is still 174.1MB. Free memory was 106.4MB in the beginning and 112.4MB in the end (delta: -6.0MB). There was no memory consumed. Max. memory is 16.1GB.
[2024-11-19 21:08:44,164 INFO  L158              Benchmark]: CDTParser took 0.14ms. Allocated memory is still 109.1MB. Free memory is still 72.6MB. There was no memory consumed. Max. memory is 16.1GB.
[2024-11-19 21:08:44,164 INFO  L158              Benchmark]: CACSL2BoogieTranslator took 260.19ms. Allocated memory is still 174.1MB. Free memory was 106.2MB in the beginning and 143.3MB in the end (delta: -37.1MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB.
[2024-11-19 21:08:44,164 INFO  L158              Benchmark]: Boogie Procedure Inliner took 26.76ms. Allocated memory is still 174.1MB. Free memory was 143.3MB in the beginning and 141.9MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB.
[2024-11-19 21:08:44,164 INFO  L158              Benchmark]: Boogie Preprocessor took 27.25ms. Allocated memory is still 174.1MB. Free memory was 141.9MB in the beginning and 140.2MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB.
[2024-11-19 21:08:44,165 INFO  L158              Benchmark]: RCFGBuilder took 210.85ms. Allocated memory is still 174.1MB. Free memory was 140.2MB in the beginning and 129.8MB in the end (delta: 10.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB.
[2024-11-19 21:08:44,165 INFO  L158              Benchmark]: TraceAbstraction took 33963.61ms. Allocated memory is still 174.1MB. Free memory was 128.8MB in the beginning and 114.4MB in the end (delta: 14.4MB). Peak memory consumption was 17.3MB. Max. memory is 16.1GB.
[2024-11-19 21:08:44,165 INFO  L158              Benchmark]: Witness Printer took 31.57ms. Allocated memory is still 174.1MB. Free memory was 114.4MB in the beginning and 112.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB.
[2024-11-19 21:08:44,167 INFO  L338   ainManager$Toolchain]: #######################  End [Toolchain 1] #######################
 --- Results ---
 * Results from de.uni_freiburg.informatik.ultimate.core:
  - StatisticsResult: Toolchain Benchmarks
    Benchmark results are:
 * CDTParser took 0.14ms. Allocated memory is still 109.1MB. Free memory is still 72.6MB. There was no memory consumed. Max. memory is 16.1GB.
 * CACSL2BoogieTranslator took 260.19ms. Allocated memory is still 174.1MB. Free memory was 106.2MB in the beginning and 143.3MB in the end (delta: -37.1MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB.
 * Boogie Procedure Inliner took 26.76ms. Allocated memory is still 174.1MB. Free memory was 143.3MB in the beginning and 141.9MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB.
 * Boogie Preprocessor took 27.25ms. Allocated memory is still 174.1MB. Free memory was 141.9MB in the beginning and 140.2MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB.
 * RCFGBuilder took 210.85ms. Allocated memory is still 174.1MB. Free memory was 140.2MB in the beginning and 129.8MB in the end (delta: 10.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB.
 * TraceAbstraction took 33963.61ms. Allocated memory is still 174.1MB. Free memory was 128.8MB in the beginning and 114.4MB in the end (delta: 14.4MB). Peak memory consumption was 17.3MB. Max. memory is 16.1GB.
 * Witness Printer took 31.57ms. Allocated memory is still 174.1MB. Free memory was 114.4MB in the beginning and 112.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB.
 * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction:
  - StatisticsResult: ErrorAutomatonStatistics
    NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0
  - CounterExampleResult [Line: 18]: a call to reach_error is reachable
    a call to reach_error is reachable
We found a FailurePath: 
[L23]              unsigned int z, k;
[L24]              unsigned long long x, y, c;
[L25]              z = __VERIFIER_nondet_uint()
[L26]              k = __VERIFIER_nondet_uint()
[L28]              x = 1
[L29]              y = z
[L30]              c = 1
       VAL         [c=1, x=1, y=0, z=0]
[L32]  COND TRUE   1
       VAL         [c=1, x=1, y=0, z=0]
[L33]  CALL        __VERIFIER_assert(x*z - x - y + 1 == 0)
       VAL         [\old(cond)=1]
[L16]  COND FALSE  !(!(cond))
       VAL         [\old(cond)=1]
[L33]  RET         __VERIFIER_assert(x*z - x - y + 1 == 0)
       VAL         [c=1, x=1, y=0, z=0]
[L35]  COND TRUE   !(c < k)
       VAL         [x=1, y=0, z=0]
[L44]              x = x * (z - 1)
       VAL         [x=4294967295, y=0]
[L46]  CALL        __VERIFIER_assert(1 + x - y == 0)
       VAL         [\old(cond)=0]
[L16]  COND TRUE   !(cond)
       VAL         [\old(cond)=0]
[L18]              reach_error()
       VAL         [\old(cond)=0]

  - StatisticsResult: Ultimate Automizer benchmark data
    CFG has 2 procedures, 17 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 33.9s, OverallIterations: 3, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 28.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 6 mSolverCounterUnknown, 18 SdHoareTripleChecker+Valid, 24.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 15 mSDsluCounter, 106 SdHoareTripleChecker+Invalid, 24.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 81 mSDsCounter, 3 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 64 IncrementalHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 3 mSolverCounterUnsat, 25 mSDtfsCounter, 64 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 35 GetRequests, 21 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 8.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=32occurred in iteration=2, InterpolantAutomatonStates: 13, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 7 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 4.4s InterpolantComputationTime, 70 NumberOfCodeBlocks, 70 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 32 ConstructedInterpolants, 0 QuantifiedInterpolants, 229 SizeOfPredicates, 2 NumberOfNonLiveVariables, 91 ConjunctsInSsa, 18 ConjunctsInUnsatCore, 3 InterpolantComputations, 1 PerfectInterpolantSequences, 4/8 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available
RESULT: Ultimate proved your program to be incorrect!
[2024-11-19 21:08:44,188 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0
Received shutdown request...
--- End real Ultimate output ---

Execution finished normally
Writing output log to file Ultimate.log
Writing human readable error path to file UltimateCounterExample.errorpath
Result:
FALSE